1. Field of the Invention
This invention relates to a technique for collectively connecting ground wires to a plurality of ground locations in a vehicle.
2. Description of the Related Art
Conventionally, a ground connection terminal of a joint connector or the like is connected to an end part of a ground wire as disclosed in Japanese Unexamined Patent Publication No. H10-208815 to connect the ground wire included in a vehicle wiring harness to a ground location of the vehicle. The ground connection terminal is connected to the ground location provided on a vehicle body. Specifically, the ground location is, for example, a bolt hole formed on the vehicle body. A hole of the ground terminal is aligned with the position of this bolt hole, a bolt is inserted into the hole of the vehicle body through the hole of the ground terminal and tightened into the bolt hole of the vehicle body with a predetermined tightening force using a tool such as an impact wrench, whereby the ground terminal can be connected to the ground location of the vehicle body.
However, in the above connection structure, the bolt tightening force for the connection of the ground terminal to the ground location of the vehicle body may vary. Such a variation of the bolt tightening force hinders an improvement in reliability in ground terminal connection.
In recent years, also in the case of collectively connecting a plurality of ground wires to ground locations, it has been required to reliably connect the respective ground wires to the ground locations.
In view of the above situation, the present invention aims to provide a ground connection body capable of improving the reliability of ground wire connection to a ground location.
The present invention is directed to a ground connection body for collectively connecting ground wires to a plurality of ground locations provided on a wall surface in a vehicle, comprising a first wire-side terminal portion shaped to be connectable to an end of a first ground wire; a second wire-side terminal portion shaped to be connectable to an end of a second ground wire different from the first ground wire; and a first ground-side terminal portion electrically connected to each of the first and second wire-side terminal portions, including a first ground location connection part connectable to a first ground location and a second ground location connection part connectable to a second ground location different from the first ground location and having such a relative positional relationship that the first and second ground location connection parts are simultaneously connectable to the first and second ground locations; wherein the second wire-side terminal portion is obliquely arranged relatively with respect to the first wire-side terminal portion so that the second ground wire connected to the second wire-side terminal portion extends in a direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion.
Preferable embodiments of a ground connection body of the present invention are described with reference to the drawings.
(Overall Configuration of Ground Connection Body 1)
As shown in
First to third ground wires E1 to E3 are the wires respectively pulled out from a specific circuit to be grounded. Each of these ground wires E1 to E3 is composed of a conductor and an insulation coating covering the conductor. These ground wires E1 to E3 are collectively connected to a first bolt G1 and a second bolt G2 fixed to a wall surface of a vehicle or the like via the ground connection body 1. The first bolt G1 is a first ground location. The second bolt G2 is a second ground location. The first and second bolts G1, G2 are, for example, hexagon bolts. The hexagon bolts are threadably engaged with screw holes formed on a vehicle body wall surface. Further, the first and second bolts G1, G2 may be embedded bolts projecting from the vehicle body wall surface. Unillustrated nuts are threadably engaged with the embedded bolts.
The first ground terminal 10 connects the first ground wire E1 to each of the first and second bolts G1, G2 as two ground locations.
The second ground terminal 20 connects the second ground wire E2 to the first bolt G1 and also to the second bolt G2 via the first ground terminal 10.
The third ground terminal 30 connects the third ground wire E3 to the second bolt G2 and also to the first bolt G1 via the first ground terminal 10.
Further, the second ground terminal 20 is obliquely mounted on the first ground terminal 10 so that the second ground wire E2 obliquely extends at an angle θ1 in a direction toward the first ground wire E1.
Furthermore, the third ground terminal 30 is obliquely mounted on the first ground terminal 10 so that the third ground wire E3 obliquely extends at an angle 82 in a direction toward the first ground wire E1.
Next, the configuration of each of the first to third ground terminals 10 to 30 is described in more detail.
(Configuration of First Ground Terminal 10)
As shown in
The first ground terminal 10 includes a first wire-side terminal portion 4 and a first ground-side terminal portion 5. The first ground terminal 10 is manufactured of an electrically conductive material.
The first wire-side terminal portion 4 is mounted on an end of the ground wire E1. The first wire-side terminal portion 4 includes a conductor barrel 4a and an insulation barrel 4b. The conductor barrel 4a is a strip-like part with open opposite ends. The conductor barrel 4a can wrap around and fix a part of the end of the first ground wire E1 where the conductor is exposed. The insulation barrel 4b is arranged side by side with the conductor barrel 4a. The insulation barrel 4b is a strip-like part with open opposite ends. The insulation barrel 4b can wrap around and fix a part of the end of the first ground wire E1 where the conductor is not exposed by being covered by the insulation coating.
The first ground-side terminal portion 5 is in the form of a flat plate including a step portion 5a and sized to be connectable to the first and second bolts G1, G2. The first ground-side terminal portion 5 is formed with a first bolt connection hole 6 and a second bolt connection hole 7 respectively at positions corresponding to the first and second bolts G1, G2. The first bolt connection hole 6 is a connection part connectable to the first bolt G1. The second bolt connection hole 7 is a connection part connectable to the second bolt G2. The first and second bolt connection holes 6, 7 are in such a relative positional relationship as to be simultaneously connectable to the first and second bolts G1, G2.
In this first embodiment, a center O1 of the first bolt connection hole 6 and a center O2 of the second bolt connection hole 7 are arranged in a direction C1 perpendicular to an extending direction S1 of an end part of the first ground wire E1 connected to the first wire-side terminal portion 4.
The step portion 5a is formed between the first and second bolt connection holes 6, 7. A first part 5b of the first ground-side terminal portion 5 where the first bolt connection hole 6 is formed is located higher than a second part 5c where the second bolt connection hole 7 is formed. The first and second parts 5b, 5c are coupled by the step portion 5a.
By the first ground-side terminal portion 5 including the step portion 5a, a second ground-side terminal portion 22 of the second ground terminal 20 can be arranged below the first part 5b and a third ground-side terminal portion 32 of the third ground terminal 30 can be arranged above the second part 5c as shown in
Further, the first ground-side terminal portion 5 includes a first coupling portion 8 and first crimping portions 9 in the first part 5b. The first coupling portion 8 is coupled to the second ground terminal 20. The first crimping portions 9 crimp the second ground terminal 20 to the first crimping portion 8, i.e. press the second ground terminal 20 into contact with the first crimping portion 8.
The first coupling portion 8 is coupled to the second ground-side terminal portion 22 in a state where the first bolt connection hole 6 of the first ground-side terminal portion 5 and a first bolt connection hole 23 (see
As shown in
The contact pieces 8a, 8b project in a direction parallel to the above direction P1 and away from the step portion 5a.
The contact pieces 8a, 8b are arranged at positions lower than a lower surface 5b1 (see
The first crimping portions 9 are parts projecting downward from the lower surface 5b1 (see
Further, the first ground-side terminal portion 5 includes a second coupling portion 13 and second crimping portions 11 in the second part 5c. The second coupling portion 13 is coupled to the third ground terminal 30. The second crimping portions 11 crimp the third ground terminal 30 to the second crimping portion 13, i.e. press the third ground terminal 30 into contact with the second crimping portion 13.
The second coupling portion 13 is coupled to the third ground-side terminal portion 32 in a state where the second bolt connection hole 7 of the first ground-side terminal portion 5 and a second bolt connection hole 33 (see
As shown in
The contact pieces 13a, 13b project in a direction parallel to the above direction P2 and away from the step portion 5a.
The contact pieces 13a, 13b are arranged at positions higher than an upper surface 5c1 (see
The second crimping portions 11 are parts projecting upward from the upper surface 5c1 (see
Further, the second part 5c of the first ground-side terminal portion 5 is formed with a locking tongue piece 12 for restricting the rotation of the first ground terminal 10 about the bolts G1, G2 by being fitted into a hole formed on the wall surface at a position distant from the second bolt connection hole 7.
(Configuration of Second Ground Terminal 20)
As shown in
As shown in
The second wire-side terminal portion 21 is mounted on an end of the second ground wire E2. The second wire-side terminal portion 21 includes a conductor barrel 21a and an insulation barrel 21b. The conductor barrel 21a is a strip-like part with open opposite ends, and can wrap around and fix a part of the end of the second ground wire E2 where the conductor is exposed. The insulation barrel 21b is arranged side by side with the conductor barrel 21a. The insulation barrel 21b is a strip-like part with open opposite ends. The insulation barrel 21b can wrap around and fix a part of the end of the second ground wire E2 where the conductor is not exposed by being covered by the insulation coating.
The second ground-side terminal portion 22 is in the form of a flat plate and sized to be able to cover a bolt hole formed on the wall surface of the vehicle with which the first bolt G1 is to be threadably engaged. The second ground-side terminal portion 22 is formed with a first bolt connection hole 23. The first bolt connection hole 23 is a connection part connectable to the first bolt G1.
Further, the second ground-side terminal portion 22 includes the contact pieces 24, 25 to be respectively engaged with the contact pieces 8a, 8b of the first coupling portion 8 of the above first ground terminal 10. The contact pieces 24, 25 are arranged on opposite sides of the first bolt connection hole 23. The contact pieces 24, 25 project in a direction opposite to the facing direction of the contact pieces 8a, 8b of the first coupling portion 8 of the above first ground terminal 10. Further, the contact pieces 24, 25 are arranged at positions higher than an upper surface 22a of the second ground-side terminal portion 22. The contact pieces 24, 25 are engageable with the upper surfaces of the contact pieces 8a, 8b of the first ground-side terminal portion 5 of the above first ground terminal 10 while being held in contact therewith. Further, projections are provided on the contact pieces 8a, 25 and recesses engageable with these projections are formed on the contact pieces 24, 8b to be held in contact with the contact pieces 8a, 25. Thus, it becomes more difficult to separate the second ground terminal 20 from the first ground terminal 10 by engaging these projections and recesses.
Furthermore, third crimping portions 26 project upward from the upper surface 22a of the second ground-side terminal portion 22. The third crimping portions 26 are arranged at opposite sides of the contact piece 24. The third crimping portions 26 can press the first ground-side terminal portion 5 of the first ground terminal 10 toward the contact pieces 24, 25 and crimp the contact pieces 8a, 8b of the first ground-side terminal portion 5 to the contact pieces 24, 25.
(Configuration of Third Ground Terminal 30)
As shown in
As shown in
The third wire-side terminal portion 31 is mounted on an end of the third ground wire E3. The third wire-side terminal portion 31 includes a conductor barrel 31a and an insulation barrel 31b. The conductor barrel 31a is a strip-like part with open opposite ends, and can wrap around and fix a part of the end of the third ground wire E3 where the conductor is exposed. The insulation barrel 31b is arranged side by side with the conductor barrel 31a. The insulation barrel 31b is a strip-like part with open opposite ends. The insulation barrel 31b can wrap around and fix a part of the end of the third ground wire E3 where the conductor is not exposed by being covered by the insulation coating.
The third ground-side terminal portion 32 is in the form of a flat plate and sized to be able to cover a bolt hole formed on the wall surface of the vehicle with which the second bolt G2 is to be threadably engaged. The third ground-side terminal portion 32 is formed with a second bolt connection hole 33. The second bolt connection hole 33 is a connection part connectable to the second bolt G2.
Further, the third ground-side terminal portion 32 includes the contact pieces 34, 35 to be respectively engaged with the contact pieces 13a, 13b of the second coupling portion 13 of the above first ground terminal 10. The contact pieces 34, 35 are arranged on opposite sides of the second bolt connection hole 33. The contact pieces 34, 35 project in a direction opposite to the facing direction of the contact pieces 13a, 13b of the second coupling portion 13 of the above first ground terminal 10. Further, the contact pieces 34, 35 are arranged at positions lower than a lower surface 32a (see
Furthermore, fourth crimping portions 36 project downward from the lower surface 32a of the third ground-side terminal portion 32. The fourth crimping portions 36 are arranged at opposite sides of the contact piece 34. The fourth crimping portions 36 can press the first ground-side terminal portion 5 of the first ground terminal 10 toward the contact pieces 34, 35 and crimp the contact pieces 13a, 13b of the first ground-side terminal portion 5 to the contact pieces 34, 35.
(Assembling Method of Ground Connection Body 1)
Next, an assembling method of the ground connection body 1 of the first embodiment is described with reference to
First, the first, second and third ground wires E1, E2 and E3 are respectively connected to the wire-side terminal portions 4, 21 and 31 of the first, second and third ground terminals 10, 20 and 30 in advance.
Subsequently, the second ground terminal 20 is coupled to the first ground terminal 10. Specifically, as shown in
At this time, the first crimping portions 9 of the first ground terminal 10 press the second ground-side terminal portion 22 downwardly and, simultaneously, the third crimping portions 26 of the second ground terminal 20 press the first ground-side terminal portion 5 upwardly. This causes the contact pieces 24, 25 of the second ground terminal 20 to be respectively crimped to the contact pieces 8a, 8b of the first ground terminal 10, i.e. pressed into contact therewith.
The contact pieces 8a, 8b of the first coupling portion 8 of the first ground terminal 10 are arranged in the direction P1 inclined by the angle θ3 from the direction C1 perpendicular to the extending direction S1 of the end part of the first ground wire E1. Thus, the first coupling portion 8 can be coupled to the second ground-side terminal portion 22 so that the second wire-side terminal portion 21 is inclined by the angle θ1 equal to the above angle θ3 in a direction toward the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5.
Thus, as shown in
In this state, the second wire-side terminal portion 21 is obliquely arranged with respect to the first wire-side terminal portion 4 so that an axial direction (same direction as the extending direction S2 of the end part of the second ground wire E2) thereof is inclined with respect to an axial direction (same direction as the extending direction S1 of the end part of the first ground wire E1) of the first wire-side terminal portion 4.
Subsequently, the third ground terminal 30 is coupled to the first ground terminal 10. Specifically, as shown in
At this time, the second crimping portions 11 of the first ground terminal 10 press the third ground-side terminal portion 32 upwardly and, simultaneously, the fourth crimping portions 36 of the third ground terminal 30 press the first ground-side terminal portion 5 downwardly. This causes the contact pieces 34, 35 of the third ground terminal 30 to be respectively crimped to the contact pieces 13a, 13b of the first ground terminal 10, i.e. pressed into contact therewith.
The contact pieces 13a, 13b of the second coupling portion 13 of the first ground terminal 10 are arranged in the direction P2 inclined by the angle θ4 from the direction C1 perpendicular to the extending direction S1 of the end part of the first ground wire E1. Thus, the third coupling portion 13 can be coupled to the third ground-side terminal portion 32 so that the third wire-side terminal portion 31 is inclined by the angle θ2 equal to the above angle θ4 in a direction toward the first wire-side terminal portion 4 with distance the first ground-side terminal portion 5.
Thus, as shown in
In this state, the third wire-side terminal portion 31 is obliquely arranged with respect to the first wire-side terminal portion 4 so that an axial direction (same direction as the extending direction S3 of the end part of the third ground wire E3) thereof is inclined with respect to an axial direction (same direction as the extending direction S1 of the end part of the first ground wire E1) of the first wire-side terminal portion 4.
In the assembled ground connection body 1, the height of the lower surface of the second part 5c of the first ground-side terminal portion 5 located below the third ground-side terminal portion 32 is equal to that of the lower surface of the second ground-side terminal portion 22 as shown in
(Characteristics of First Embodiment)
(1) In the ground connection body 1 of the first embodiment, the first ground-side terminal portion 5 of the first ground terminal 10 includes the first and second bolt connection holes 6, 7 so as to be connectable to each of the first and second bolts G1 G2 as a plurality of ground locations. Thus, if the first ground-side terminal portion 5 is sufficiently connected to at least one of the first and second bolts G1, G2, three ground wires, i.e. the first ground wire E1 connected to the first wire-side terminal portion 4, the second ground wire E2 connected to the second wire-side terminal portion 21 and the third ground wire E3 connected to the third wire-side terminal portion 31, can be connected to at least one of the first and second bolts G1, G2 and reliability can be improved.
In addition, in the above ground connection body 1, the second wire-side terminal portion 21 is obliquely arranged with respect to the first wire-side terminal portion 4 so that the second ground wire E2 connected to the second wire-side terminal portion 21 extends in the direction toward the first ground wire E1 connected to the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5 in such a configuration in which the first and second bolts G1, G2 are simultaneously connectable. Further, the third wire-side terminal portion 31 is obliquely arranged with respect to the first wire-side terminal portion 4 so that the third ground wire E3 connected to the third wire-side terminal portion 31 extends in the direction toward the first ground wire E1 connected to the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5. Thus, the second and third ground wires E2, E3 can be obliquely arranged to approach the first ground wire E1 and distances between these wires become smaller. As a result, an arrangement space for the ground wires E1, E2 and E3 can be reduced in the case of collectively connecting a plurality of ground wires E1, E2 and E3 to the first and second bolts G1, G2.
(2) In the ground connection body 1 of the first embodiment, the first ground-side terminal portion 5 needs to have a certain width in the arrangement direction of the first and second bolt connection holes 6, 7 as compared with the direction perpendicular to this arrangement direction. However, in this ground connection body 1, it is possible to suppress an increase of a space taken up by the ground connection body 1 by arranging end parts of the first, second and third wire-side terminal portions 4, 21 and 31 closer to the first ground-side terminal portion 5 in parallel to the arrangement direction of these connection holes 6, 7.
(3) In the ground connection body 1 of the first embodiment, the axial direction of each of the second and third wire-side terminal portions 21 and 31 is inclined with respect to the axial direction of the first wire-side terminal portion 4. Thus, the second and third ground wires E2, E3 can be reliably obliquely arranged to approach the first ground wire E1. As a result, the arrangement space for the ground wires E1, E2 and E3 can be more reliably reduced.
(4) In the ground connection body 1 of the first embodiment, the first ground terminal 10 including the first wire-side terminal portion 4 and the first ground-side terminal portion 5 and the second ground terminal 20 including the second wire-side terminal portion 21 and the second ground-side terminal portion 22 are separately formed. In such a configuration, the second ground-side terminal portion 22 of the second ground terminal 20 is coupled to the first coupling portion 8 of the first ground-side terminal portion 5 of the first ground terminal 10 and the first crimping portions 9 press the second ground-side terminal portion 22 toward the first coupling portion 8 to crimp the second ground-side terminal portion 22 to the first coupling portion 8. This enables the second ground wire E2 connected to the second wire-side terminal portion 21 of the second ground terminal 20 to be reliably connected to at least one of the first and second bolts G1, G2.
Further, in the ground connection body 1 of this first embodiment, the first ground terminal 10 including the first wire-side terminal portion 4 and the first ground-side terminal portion 5 and the third ground terminal 30 including the third wire-side terminal portion 31 and the third ground-side terminal portion 32 are separately formed. In such a configuration, the third ground-side terminal portion 32 of the third ground terminal 30 is coupled to the second coupling portion 13 of the first ground-side terminal portion 5 of the first ground terminal 10 and the second crimping portions 11 press the third ground-side terminal portion 32 toward the second coupling portion 13 to crimp the third ground-side terminal portion 32 to the second coupling portion 13. This enables the third ground wire E3 connected to the third wire-side terminal portion 31 of the third ground terminal 30 to be reliably connected to at least one of the first and second bolts G1, G2.
(5) In the ground connection body 1 of the first embodiment, the second wire-side terminal portion 21 and the second ground-side terminal portion 22 are linearly connected relative to each other and the first coupling portion 8 is so coupled to the second ground-side terminal portion 22 that the second wire-side terminal portion 21 is inclined in the direction toward the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5. Thus, even in the case of using an existing ground terminal structured such that a wire-side terminal portion and a ground-side terminal portion are linearly connected relative to each other as the second ground terminal 20, the second wire-side terminal portion 21 can be obliquely arranged in the direction toward the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5 by coupling the second ground-side terminal portion 22 to the first coupling portion 8. This enables the second ground wire E2 connected to the second wire-side terminal portion 21 to be obliquely inclined to approach the first ground wire E1 connected to the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5 in a manner similar to the above. As a result, a wire arrangement space can be reduced in the case of collectively connecting a plurality of ground wires to the first and second bolts G1, G2. Further, since an existing ground terminal can be utilized as the second ground terminal 20, parts can be shared.
Further, the third wire-side terminal portion 31 and the third ground-side terminal portion 32 are linearly connected relative to each other and the second coupling portion 13 is so coupled to the third ground-side terminal portion 32 that the third wire-side terminal portion 31 is inclined in the direction toward the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5. Thus, even in the case of using an existing ground terminal structured such that a wire-side terminal portion and a ground-side terminal portion are linearly connected relative to each other as the third ground terminal 30, the third wire-side terminal portion 31 can be obliquely arranged in the direction toward the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5 by coupling the third ground-side terminal portion 32 to the second coupling portion 13. This enables the third ground wire E3 connected to the third wire-side terminal portion 31 to be obliquely inclined to approach the first ground wire E1 connected to the first wire-side terminal portion 4 with distance from the first ground-side terminal portion 5 in a manner similar to the above. As a result, the wire arrangement space can be reduced in the case of collectively connecting the first to third ground wires E1, E2 and E3 to the first and second bolts G1, G2. Further, since an existing ground terminal can be utilized as the third ground terminal 30, parts can be shared.
(Modifications of First Embodiment)
(A) In the first ground terminal 10 of the above first embodiment and the ground connection body 1 using the same, a structure is shown which includes two connection holes 6, 7 to enable connection to the first and second bolts G1, G2 as two ground locations, but the present invention is not limited to this. A plurality of bolt connection holes may be provided as appropriate according to the number and arrangement of a plurality of ground locations. Also in that case, if at last one ground location out of the first and second bolts G1, G2 is sufficiently connected, ground connection is achieved and the reliability of ground connection can be enhanced as in the first embodiment.
Further, instead of forming the two connection holes 6, 7, a long hole or slit into which the first and second bolts G1, G2 as two ground locations are simultaneously insertable may be formed.
(B) The ground connection body 1 structured such that three ground terminals 10, 20 and 30 composed of different parts are coupled to each other is described in the above first embodiment. However, the present invention is not limited to this. The ground connection body may be structured such that the first ground-side terminal portion 5 and the first to third wire-side terminal portions 4, 21 and 31 are integrally formed. Even in such a structure, the ground wires E1 to E2 connected to the first to third wire-side terminal portions 4, 21 and 3 can be simultaneously connected to the first and second bolts G1, G2 as two ground locations via the first ground-side terminal portion 5. As a result, reliability in connecting the ground wires to the ground locations can be improved. Further, by obliquely arranging the second and third wire-side terminal portions 21, 31 in the directions toward the first wire-side terminal portion 4, the second and third ground wires E2, E3 can be obliquely arranged to extend in the directions toward the first ground wire E1. As a result, the arrangement space can be reduced.
(C) Further, in the above first embodiment, the second and third wire-side terminal portions 21, 31 are obliquely arranged with respect to the first wire-side terminal portion 4 so that the second and third ground wires E2, E3 extend in directions toward the first ground wire E1 with distance from the first ground-side terminal portion 5. However, the present invention is not limited to this. The second and third wire-side terminal portions 21, 31 only have to be obliquely arranged relatively with respect to the first wire-side terminal portion 4 so that the first to third ground wires E1 to E3 extend in directions to approach each other with distance from the first ground-side terminal portion 5. Thus, in the case of the ground connection body structured such that the first ground-side terminal portion 5 and the first to third wire-side terminal portions 4, 21 and 31 are integrally formed, for example, as in the above modification (B), the two wire-side terminal portions other than either the second or third wire-side terminal portion 21 or 31 (i.e. the first and third wire-side terminal portions 4, 31 with respect to the second wire-side terminal portion 21 or the first and second wire-side terminal portions 4, 21 with respect to the third wire-side terminal portion 31) may be obliquely arranged in directions to approach the second or third wire-side terminal portion 21 or 31. Also in that case, the first to third ground wires E1 to E3 can be arranged to extend in directions to approach each other with distance from the first ground-side terminal portion 5. As a result, the arrangement space for the ground wires E1, E2 and E3 can be reduced.
(Overall Configuration of Ground Connection Body 101)
As shown in
Specifically, a second wire-side terminal portion 121 of the second ground terminal 120 is obliquely connected to a second ground-side terminal portion 122 of this second ground terminal 120 so that the second ground wire E102 obliquely extends at an angle θ101 in a direction toward the first ground wire E101. Further, a third wire-side terminal portion 131 of the third ground terminal 130 is obliquely connected to a third ground-side terminal portion 132 of this third ground terminal 130 so that the third ground wire E103 obliquely extends at an angle θ102 in a direction toward the first ground wire E101.
Next, the configuration of each of the first to third ground terminals 110 to 130 is described in more detail.
(Configuration of First Ground Terminal 110)
As shown in
The first ground terminal 110 includes a first wire-side terminal portion 104 and a first ground-side terminal portion 105. The first ground terminal 110 is manufactured of an electrically conductive material.
The first wire-side terminal portion 104 is mounted on an end of the ground wire E101. The first wire-side terminal portion 104 includes a conductor barrel 104a and an insulation barrel 104b similarly to the first wire-side terminal portion 4 of the above first embodiment.
The first ground-side terminal portion 105 is in the form of a flat plate including a step portion 105a and sized to be connectable to the first and second bolts G101, G102. The first ground-side terminal portion 105 is formed with a first bolt connection hole 106 and a second bolt connection hole 107 respectively at positions corresponding to the first and second bolts G101, G102. The first bolt connection hole 106 is a connection part connectable to the first bolt G101. The second bolt connection hole 107 is a connection part connectable to the second bolt G102. The first and second bolt connection holes 106, 107 are in such a relative positional relationship as to be simultaneously connectable to the first and second bolts G101, G102.
In this second embodiment, a center O101 of the first bolt connection hole 106 and a center O102 of the second bolt connection hole 107 are arranged in a direction C101 perpendicular to an extending direction S101 of an end part of the first ground wire E101 connected to the first wire-side terminal portion 104.
The step portion 105a is formed between the first and second bolt connection holes 106, 107. A first part 105b of the first ground-side terminal portion 105 where the first bolt connection hole 106 is formed is located higher than a second part 105c where the second bolt connection hole 107 is formed, and the first and second parts 105b, 105c are coupled by the step portion 105a.
By the first ground-side terminal portion 105 including the step portion 105a, the second ground-side terminal portion 122 of the second ground terminal 120 can be arranged below the first part 105b and the third ground-side terminal portion 132 of the third ground terminal 130 can be arranged above the second part 105c as shown in
Further, the first ground-side terminal portion 105 includes a first coupling portion 108 and first crimping portions 109 in the first part 105b. The first coupling portion 108 is coupled to the second ground terminal 120. The first crimping portions 109 crimp the second ground terminal 120 to the first crimping portion 108, i.e. press the second ground terminal 120 into contact with the first crimping portion 108.
The first coupling portion 108 is coupled to the second ground-side terminal portion 122 in a state where the first bolt connection hole 106 of the first ground-side terminal portion 105 and a first bolt connection hole 123 (see
As shown in
The first crimping portions 109 are parts projecting downward from the lower surface of the first part 105b of the first ground-side terminal portion 105 similarly to the first crimping portions 9 of the first embodiment.
Further, the first ground-side terminal portion 105 includes a second coupling portion 113 and second crimping portions 111 in the second part 105c. The second coupling portion 113 is coupled to the third ground terminal 130. The second crimping portions 111 crimp the third ground terminal 130 to the second crimping portion 113, i.e. press the third ground terminal 130 into contact with the second crimping portion 113.
The second coupling portion 113 is coupled to the third ground-side terminal portion 132 in a state where the second bolt connection hole 107 of the first ground-side terminal portion 105 and a second bolt connection hole 133 (see
As shown in
The second crimping portions 111 are parts projecting upward from the upper surface of the second part 105c of the first ground-side terminal portion 105 similarly to the second crimping portions 11 of the first embodiment.
Further, the second part 105c of the first ground-side terminal portion 105 is formed with a locking tongue piece 112 for restricting the rotation of the first ground terminal 110 about the bolts G101, G102 by being fitted into a hole formed on the wall surface at a position distant from the second bolt connection hole 107.
(Configuration of Second Ground Terminal 120)
As shown in
As shown in
Specifically, as shown in
The second wire-side terminal portion 121 is mounted on an end of the second ground wire E102. The second wire-side terminal portion 121 includes a conductor barrel 121a and an insulation barrel 121b similarly to the first wire-side terminal portion 4 of the above first embodiment.
The second ground-side terminal portion 122 is in the form of a flat plate and sized to be able to cover a bolt hole formed on the wall surface of the vehicle with which the first bolt G101 is to be threadably engaged. The second ground-side terminal portion 122 is formed with the first bolt connection hole 123. The first bolt connection hole 123 is a connection part connectable to the first bolt G101.
Further, the second ground-side terminal portion 122 includes the contact pieces 124, 125 to be respectively engaged with the contact pieces 108a, 108b of the first coupling portion 108 of the above first ground terminal 110. The contact pieces 124, 125 are arranged on opposite sides of the first bolt connection hole 123. The contact pieces 124, 125 project in a direction opposite to the facing direction of the contact pieces 108a, 108b of the first coupling portion 108 of the above first ground terminal 110. Further, the contact pieces 124, 125 are arranged at positions higher than an upper surface 122a of the second ground-side terminal portion 122. The contact pieces 124, 125 are engageable with the upper surfaces of the contact pieces 108a, 108b of the first ground-side terminal portion 105 of the above first ground terminal 110 while being held in contact therewith.
Furthermore, third crimping portions 126 project upward from the upper surface 122a of the second ground-side terminal portion 122 similarly to the third crimping portions 26 of the above first embodiment.
(Configuration of Third Ground Terminal 130)
As shown in
As shown in
Specifically, as shown in
The oblique arrangement of the third wire-side terminal portion 131 with respect to the third ground-side terminal portion 132 in the third ground terminal 130 is in a mirror image relationship with that of the second wire-side terminal portion 121 with respect to the second ground-side terminal portion 122 in the second ground terminal 120.
The third wire-side terminal portion 131 is mounted on an end of the third ground wire E103. The third wire-side terminal portion 131 includes a conductor barrel 131a and an insulation barrel 131b similarly to the third wire-side terminal portion 31 of the above first embodiment.
The third ground-side terminal portion 132 is in the form of a flat plate and sized to be able to cover a bolt hole formed on the wall surface of the vehicle with which the second bolt G102 is to be threadably engaged. The third ground-side terminal portion 132 is formed with the second bolt connection hole 133. The second bolt connection hole 133 is a connection part connectable to the second bolt G102.
Further, the third ground-side terminal portion 132 includes the contact pieces 134, 135 to be respectively engaged with the contact pieces 113a, 113b of the second coupling portion 113 of the above first ground terminal 110. The contact pieces 134, 135 are arranged on opposite sides of the second bolt connection hole 133. The contact pieces 134, 135 project in a direction opposite to the facing direction of the contact pieces 113a, 113b of the second coupling portion 113 of the above first ground terminal 110. Further, the contact pieces 134, 135 are arranged at positions lower than the lower surface of the third ground-side terminal portion 132. The contact pieces 134, 135 are engageable with the lower surfaces of the contact pieces 113a, 113b of the first ground-side terminal portion 105 of the above first ground terminal 110 while being held in contact therewith.
Furthermore, fourth crimping portions 136 project downward from the lower surface of the third ground-side terminal portion 132 similarly to the crimping portions 36 of the first embodiment.
(Assembling Method of Ground Connection Body 101)
Next, an assembling method of the ground connection body 101 of the second embodiment is described with reference to
First, the first, second and third ground wires E101, E102 and E103 are respectively connected to the wire-side terminal portions 104, 121 and 131 of the first, second and third ground terminals 110, 120 and 130 in advance.
Subsequently, the second ground terminal 120 is coupled to the first ground terminal 110. Specifically, as shown in
At this time, the first crimping portions 109 of the first ground terminal 110 press the second ground-side terminal portion 122 downwardly and, simultaneously, the third crimping portions 126 of the second ground terminal 120 press the first ground-side terminal portion 105 upwardly. This causes the contact pieces 124, 125 of the second ground terminal 120 to be respectively crimped to the contact pieces 108a, 108b of the first ground terminal 110, i.e. pressed into contact therewith.
In the ground connection body 101 of the second embodiment, the contact pieces 108a, 108b of the first coupling portion 108 of the first ground terminal 110 are arranged in the direction C101 perpendicular to the extending direction S101 of the end part of the first ground wire E101. On the other hand, the second wire-side terminal portion 121 of the second ground terminal 120 is coupled to the second ground-side terminal portion 122 to be inclined by the angle θ103 equal to the angle θ101 (see
Thus, as shown in
In this state, the second wire-side terminal portion 121 is obliquely arranged with respect to the first wire-side terminal portion 104 so that the axial direction (same direction as the extending direction S102 of the end part of the second ground wire E102) thereof is inclined with respect to the axial direction (same direction as the extending direction S101 of the end part of the first ground wire E101) of the first wire-side terminal portion 104.
Subsequently, the third ground terminal 130 is coupled to the first ground terminal 110. Specifically, as shown in
At this time, the second crimping portions 111 of the first ground terminal 110 press the third ground-side terminal portion 132 upwardly and, simultaneously, the fourth crimping portions 136 of the third ground terminal 130 press the first ground-side terminal portion 105 downwardly. This causes the contact pieces 134, 135 of the third ground terminal 130 to be respectively crimped to the contact pieces 113a, 113b of the first ground terminal 110, i.e. pressed into contact therewith.
In the ground connection body 101 of the second embodiment, the contact pieces 113a, 113b of the second coupling portion 113 of the first ground terminal 110 are arranged in the direction C101 perpendicular to the extending direction S101 of the end part of the first ground wire E101. On the other hand, the third wire-side terminal portion 131 of the third ground terminal 130 is coupled to the third ground-side terminal portion 132 to be inclined by the angle θ104 equal to the angle θ102 (see
Thus, as shown in
In this state, the third wire-side terminal portion 131 is obliquely arranged with respect to the first wire-side terminal portion 104 so that the axial direction (same direction as the extending direction S103 of the end part of the third ground wire E103) thereof is inclined with respect to the axial direction (same direction as the extending direction S101 of the end part of the first ground wire E101) of the first wire-side terminal portion 104.
(Characteristics of Second Embodiment)
(1) In the ground connection body 101 of the second embodiment, the first ground-side terminal portion 105 of the first ground terminal 110 includes the first and second bolt connection holes 106, 107 so as to be connectable to each of the first and second bolts G101, G102 as a plurality of ground locations. Thus, if the first ground-side terminal portion 105 is sufficiently connected to at least one of the first and second bolts G101, G102, three ground wires, i.e. the first ground wire E101 connected to the first wire-side terminal portion 104, the second ground wire E102 connected to the second wire-side terminal portion 121 and the third ground wire E103 connected to the third wire-side terminal portion 131, can be connected to at least one of the first and second bolts G101, G102 and reliability can be improved.
In addition, in the above ground connection body 101, the second wire-side terminal portion 121 is obliquely arranged with respect to the first wire-side terminal portion 104 so that the second ground wire E102 connected to the second wire-side terminal portion 121 extends in the direction toward the first ground wire E101 connected to the first wire-side terminal portion 104 with distance from the first ground-side terminal portion 105 in such a configuration in which the first and second bolts G101, G102 are simultaneously connectable. Further, the third wire-side terminal portion 131 is obliquely arranged with respect to the first wire-side terminal portion 104 so that the third ground wire E103 connected to the third wire-side terminal portion 131 extends in the direction toward the first ground wire E101 connected to the first wire-side terminal portion 104 with distance from the first ground-side terminal portion 105.
Thus, the second ground wire E102 connected to the second wire-side terminal portion 121 and the third ground wire E103 connected to the third wire-side terminal portion 131 can be obliquely arranged to approach the first ground wire E101 connected to the first wire-side terminal portion 104 and distances between these wires become smaller. As a result, an arrangement space for the ground wires E101, E102 and E103 can be reduced in the case of collectively connecting a plurality of ground wires E101, E102 and E103 to the first and second bolts G101, G102.
(2) In the ground connection body 101 of the second embodiment, the first ground-side terminal portion 105 needs to have a certain width in the arrangement direction of the first and second bolt connection holes 106, 107 as compared with the direction perpendicular to this arrangement direction. However, in this ground connection body 101, it is possible to suppress an increase of a space taken up by the ground connection body 101 by arranging end parts of the first, second and third wire-side terminal portions 104, 121 and 131 closer to the first ground-side terminal portion 105 in parallel to the arrangement direction of these connection holes 106, 107.
(3) In the ground connection body 101 of the second embodiment, the axial direction of each of the second and third wire-side terminal portions 121 and 131 is inclined with respect to that of the first wire-side terminal portion 104. Thus, the second ground wire E102 connected to the second wire-side terminal portion 121 and the third ground wire E103 connected to the third wire-side terminal portion 131 can be reliably obliquely arranged to approach the first ground wire E101. As a result, the arrangement space for the ground wires E101, E102 and E103 can be more reliably reduced.
(4) In the ground connection body 101 of the second embodiment, the first ground terminal 110 including the first wire-side terminal portion 104 and the first ground-side terminal portion 105 and the second ground terminal 120 including the second wire-side terminal portion 121 and the second ground-side terminal portion 122 are separately formed. In such a configuration, the second ground-side terminal portion 122 of the second ground terminal 120 is coupled to the first coupling portion 108 of the first ground-side terminal portion 105 of the first ground terminal 110 and the first crimping portions 109 press the second ground-side terminal portion 122 toward the first coupling portion 108 to crimp the second ground-side terminal portion 122 to the first coupling portion 108. This enables the second ground wire E102 connected to the second wire-side terminal portion 121 of the second ground terminal 120 to be reliably connected to at least one of the first and second bolts G101, G102.
Further, in the ground connection body 101 of this second embodiment, the first ground terminal 110 including the first wire-side terminal portion 104 and the first ground-side terminal portion 105 and the third ground terminal 130 including the third wire-side terminal portion 131 and the third ground-side terminal portion 132 are separately formed. In such a configuration, the third ground-side terminal portion 132 of the third ground terminal 130 is coupled to the second coupling portion 113 of the first ground-side terminal portion 105 of the first ground terminal 110 and the second crimping portions 111 press the third ground-side terminal portion 132 toward the second coupling portion 113 to crimp the third ground-side terminal portion 132 to the second coupling portion 113. This enables the third ground wire E103 connected to the third wire-side terminal portion 131 of the third ground terminal 130 to be reliably connected to at least one of the first and second bolts G101, G102.
(5) In the ground connection body 101 of the second embodiment, the second wire-side terminal portion 121 is obliquely connected to the second ground-side terminal portion 122 so that the second ground wire E102 connected to the second wire-side terminal portion 121 extends in the direction toward the first ground wire E101 connected to the first wire-side terminal portion 104 with distance from the first ground-side terminal portion 105 in the state where the second ground-side terminal portion 122 is coupled to the first coupling portion 108. Thus, in performing an operation of coupling the second ground-side terminal portion 122 to the first coupling portion 108, it is not necessary to proceed with the coupling operation while considering an angle of inclination between the first and second ground wires E101 and E102, whereby a reduction in operation speed can be suppressed. In addition, in the state where the second ground-side terminal portion 122 is coupled to the first coupling portion 108, the second wire-side terminal portion 121 can be obliquely arranged in the direction toward the first wire-side terminal portion 104. This enables the second ground wire E102 connected to the second wire-side terminal portion 121 to be obliquely arranged to approach the first ground wire E101 connected to the first wire-side terminal portion 104 with distance from the first ground-side terminal portion 105 as in the above first embodiment. As a result, a wire arrangement space can be reduced in the case of collectively connecting a plurality of ground wires to the first and second bolts G101, G102.
(6) Further, similarly to the above second wire-side terminal portion 121, the third wire-side terminal portion 131 is obliquely connected to the third ground-side terminal portion 132 so that the third ground wire E103 connected to the third wire-side terminal portion 131 extends in the direction toward the first ground wire E101 connected to the first wire-side terminal portion 104 with distance from the first ground-side terminal portion 105 in the state where the third ground-side terminal portion 132 is coupled to the second coupling portion 113. Thus, in performing an operation of coupling the third ground-side terminal portion 132 to the second coupling portion 113, it is not necessary to proceed with the coupling operation while considering an angle of inclination between the first and third ground wires E101 and E103, whereby a reduction in operation speed can be suppressed. In addition, in the state where the third ground-side terminal portion 132 is coupled to the second coupling portion 113, the third wire-side terminal portion 131 can be obliquely arranged in the direction toward the first wire-side terminal portion 104. This enables the third ground wire E103 connected to the third wire-side terminal portion 131 to be obliquely arranged to approach the first ground wire E101 connected to the first wire-side terminal portion 104 with distance from the first ground-side terminal portion 105 as in the above first embodiment. As a result, the wire arrangement space can be reduced in the case of collectively connecting a plurality of ground wires to the first and second bolts G101, G102.
In the ground connection body 1 according to the above first embodiment, the wire-side terminal portions 21, 31 are respectively obliquely arranged on the opposite sides of the first wire-side terminal portion 4. Further, in the ground connection body 101 according to the above second embodiment, the wire-side terminal portions 121, 131 are respectively obliquely arranged on the opposite sides of the first wire-side terminal portion 104. However, a plurality of ground wires can be simultaneously connected to a plurality of ground locations and the arrangement space for the ground wires can be reduced also by obliquely arranging only either one of the wire-side terminal portions 21 and 131 according to the first embodiment or either one of the wire-side terminal portions 121, 131 according to the second embodiment.
For example, in a ground connection body 201 according to a third embodiment, only a second ground terminal 20 is oblique to an axial direction (same as an extending direction S201 of an end part of a first ground wire E201 connected to a first wire-side terminal portion 204) of the first wire-side terminal portion 204 of a first ground terminal 210 as shown in
In this case, out of first to third ground wires E201, E202 and E203 connected to three ground terminals 210, 20 and 30, only the second ground wire E202 can be obliquely arranged to approach the first ground wire E201 in the center. This enables an arrangement space to be reduced as compared with the case where the three ground wires are arranged in parallel.
Specifically, as shown in
Here, the second and third ground terminals 20, 30 are common to the second and third ground terminals 20, 30 included in the ground connection body 1 of the first embodiment and each of them is structured similarly to existing ground terminals in which a wire-side terminal portion and a ground-side terminal portion are linearly connected. Any further detailed description is omitted here.
As shown in
The first ground terminal 210 includes a first wire-side terminal portion 204 and a first ground-side terminal portion 205.
The first wire-side terminal portion 204 is mounted on an end of the ground wire E201, and includes a conductor barrel 204a and an insulation barrel 204b similarly to the first wire-side terminal portion 4 of the above first embodiment.
The first ground-side terminal portion 205 is in the form of a flat plate including a step portion 205a and sized to be connectable to the first and second bolts G201, G202. The first ground-side terminal portion 205 is formed with a first bolt connection hole 206 and a second bolt connection hole 207 respectively at positions corresponding to the first and second bolts G201, G202. The first bolt connection hole 206 is a connection part connectable to the first bolt G201. The second bolt connection hole 207 is a connection part connectable to the second bolt G202. The first and second bolt connection holes 206, 207 are in such a relative positional relationship as to be simultaneously connectable to the first and second bolts G201, G202.
In the third embodiment, a center O201 of the first bolt connection hole 206 and a center O202 of the second bolt connection hole 207 are arranged in a direction C201 perpendicular to the extending direction S201 of the end part of the first ground wire E201 connected to the first wire-side terminal portion 204.
The step portion 205a is formed between the first and second bolt connection holes 206, 207. A first part 205b of the first ground-side terminal portion 205 where the first bolt connection hole 206 is formed is located higher than a second part 205c where the second bolt connection hole 207 is formed, and the first and second parts 205b, 205c are coupled by the step portion 205a.
By the first ground-side terminal portion 205 including the step portion 205a, a second ground-side terminal portion 22 of the second ground terminal 20 can be arranged below the first part 205b and a third ground-side terminal portion 32 of the third ground terminal 30 can be arranged above the second part 205c as shown in
Further, the first ground-side terminal portion 205 includes a first coupling portion 208 and first crimping portions 209 in the first part 205b. The first coupling portion 208 is coupled to the second ground terminal 20. The first crimping portions 209 crimp the second ground terminal 20 to the first crimping portion 208, i.e. press the second ground terminal 20 into contact with the first crimping portion 208.
The first coupling portion 208 is coupled to the second ground-side terminal portion 22 in a state where the first bolt connection hole 206 of the first ground-side terminal portion 205 and a first bolt connection hole 23 (see
As shown in
The contact pieces 208a, 208b project in a direction parallel to the above direction P201 and away from the step portion 205a.
The first crimping portions 209 are parts projecting downward from the lower surface of the first part 205b of the first ground-side terminal portion 205 similarly to the first crimping portions 9 of the first embodiment.
Further, the first ground-side terminal portion 205 includes a second coupling portion 213 and second crimping portions 211 in the second part 205c. The second coupling portion 213 is coupled to the third ground terminal 30. The second crimping portions 211 crimp the third ground terminal 30 to the second crimping portion 213, i.e. press the third ground terminal 30 into contact with the second crimping portion 213.
The second coupling portion 213 is coupled to the third ground-side terminal portion 32 in a state where the second bolt connection hole 207 of the first ground-side terminal portion 205 and a second bolt connection hole 33 (see
As shown in
The second crimping portions 211 are parts projecting upward from the upper surface of the second part 205c of the first ground-side terminal portion 205 similar to the second crimping portions 11 of the first embodiment.
Further, the second part 205c of the first ground-side terminal portion 205 is formed with a locking tongue piece 212 for restricting the rotation of the first ground terminal 210 about the bolts G201, G202 by being fitted into a hole formed on the wall surface at a position distant from the second bolt connection hole 207.
(Assembling Method of Ground Connection Body 201)
Next, an assembling method of the ground connection body 201 of the third embodiment is described with reference to
First, the first, second and third ground wires E201, E202 and E203 are respectively connected to the wire-side terminal portions 204, 21 and 31 of the first, second and third ground terminals 10, 20 and 30 in advance.
Subsequently, the second ground terminal 20 is coupled to the first ground terminal 210 similarly to the ground connection body 1 of the first embodiment.
The contact pieces 208a, 208b of the first coupling portion 208 of the first ground terminal 210 are arranged in the direction P201 inclined by the angle θ3 from the direction C201 perpendicular to the extending direction S201 of the end part of the first ground wire E201. Thus, the first coupling portion 208 can be coupled to the second ground-side terminal portion 22 so that the second wire-side terminal portion 21 is inclined by the angle θ201 equal to the above angle θ3 in a direction toward the first wire-side terminal portion 204 with distance from the first ground-side terminal portion 205.
Thus, as shown in
In this state, the second wire-side terminal portion 21 is obliquely arranged with respect to the first wire-side terminal portion 204 so that an axial direction (same direction as the extending direction S202 of the end part of the second ground wire E202) thereof is inclined with respect to an axial direction (same direction as the extending direction S201 of the end part of the first ground wire E201) of the first wire-side terminal portion 204.
Subsequently, the third ground terminal 30 is coupled to the first ground terminal 210 similarly to the ground connection body 1 of the first embodiment.
In the ground connection body 201 of the third embodiment, the contact pieces 213a, 213b of the second coupling portion 213 of the first ground terminal 210 are arranged in the direction C201 perpendicular to the extending direction S201 of the end part of the first ground wire E201.
Thus, as shown in
In the ground connection body 201 assembled as described above, the second ground wire E202 is arranged to approach the first ground wire E201 with distance from the ground-side terminal portion 205 and, simultaneously, the third ground wire E203 is arranged in parallel to the first ground wire E201. Thus, an arrangement space can be reduced as compared with the case where three ground wires E201 to E203 are arranged in parallel.
Although three ground terminals are combined in the structures of the ground connection bodies according to the above first to third embodiments, the present invention is not limited to this. A ground connection body may be configured by combining two ground terminals such that the two ground terminals can be arranged obliquely to each other.
For example, a ground connection body 301 according to a fourth embodiment is structured such that a second ground terminal 20 is obliquely arranged with respect to an axial direction (i.e. same as an extending direction S301 of an end part of a first ground wire E301 to be described later) of a first wire-side terminal portion 304 of a first ground terminal 310 as shown in
The ground connection body 301 of the fourth embodiment is specifically configured as described below and, as shown in
Here, the second ground terminal 20 is common to the one included in the ground connection body 1 of the first embodiment and structured similarly to existing ground terminals in which a wire-side terminal portion and a ground-side terminal portion are linearly connected. Any further detailed description is omitted here.
As shown in
The first ground terminal 310 includes a first wire-side terminal portion 304 and a first ground-side terminal portion 305.
The first wire-side terminal portion 304 is mounted on an end of the ground wire E301 and includes a conductor barrel 304a and an insulation barrel 304b similarly to the first wire-side terminal portion 4 of the above first embodiment.
The first ground-side terminal portion 305 is in the form of a flat plate including a step portion 305a and sized to be connectable to the first and second bolts G301, G302. The first ground-side terminal portion 305 is formed with a first bolt connection hole 306 and a second bolt connection hole 307 respectively at positions corresponding to the first and second bolts G301, G302. The first bolt connection hole 306 is a connection part connectable to the first bolt G301. The second bolt connection hole 307 is a connection part connectable to the second bolt G302. The first and second bolt connection holes 306, 307 are in such a relative positional relationship as to be simultaneously connectable to the first and second bolts G301, G302.
In the fourth embodiment, a center O301 of the first bolt connection hole 306 and a center O302 of the second bolt connection hole 307 are arranged in a direction C301 perpendicular to the extending direction S301 of the end part of the first ground wire E301 connected to the first wire-side terminal portion 304.
The step portion 305a is formed between the first and second bolt connection holes 306, 307. A first part 305b of the first ground-side terminal portion 305 where the first bolt connection hole 306 is formed is located higher than a second part 305c where the second bolt connection hole 307 is formed, and the first and second parts 305b, 305c are coupled by the step portion 305a.
By the first ground-side terminal portion 305 including the step portion 305a, a second ground-side terminal portion 22 of the second ground terminal 20 can be arranged below the first part 305b as shown in
Further, the first ground-side terminal portion 305 includes a first coupling portion 308 and first crimping portions 309 in the first part 305b. The first coupling portion 308 is coupled to the second ground terminal 20. The first crimping portions 309 crimp the second ground terminal 20 to the first crimping portion 308, i.e. press the second ground terminal 20 into contact with the first crimping portion 308.
The first coupling portion 308 is coupled to the second ground-side terminal portion 22 in a state where the first bolt connection hole 306 of the first ground-side terminal portion 305 and a first bolt connection hole 23 (see
As shown in
The contact pieces 308a, 308b project in a direction parallel to the above direction P301 and away from the step portion 305a.
The first crimping portions 309 are parts projecting downward from the lower surface of the first part 305b of the first ground-side terminal portion 305 similarly to the first crimping portions 9 of the first embodiment.
Further, the second part 305c of the first ground-side terminal portion 305 is formed with a locking tongue piece 312 for restricting the rotation of the first ground terminal 310 about the bolts G301, G302 by being fitted into a hole formed on the wall surface at a position distant from the second bolt connection hole 307.
(Assembling Method of Ground Connection Body 301)
Next, an assembling method of the ground connection body 301 of the fourth embodiment is described with reference to
First, the first and second ground wires E301, E302 are respectively connected to the wire-side terminal portions 304, 21 of the first and second ground terminals 310, 20 and 30 in advance.
Subsequently, the second ground terminal 20 is coupled to the first ground terminal 310 similarly to the ground connection body 1 of the first embodiment.
The contact pieces 308a, 308b of the first coupling portion 308 of the first ground terminal 310 are arranged in the direction P301 inclined by the angle θ303 from the direction C301 perpendicular to the extending direction S301 of the end part of the first ground wire E301. Thus, the first coupling portion 308 can be coupled to the second ground-side terminal portion 22 so that the second wire-side terminal portion 21 is inclined by the angle θ301 equal to the above angle θ303 in a direction toward the first wire-side terminal portion 304 with distance from the first ground-side terminal portion 305.
Thus, as shown in
In this state, the second wire-side terminal portion 21 is obliquely arranged with respect to the first wire-side terminal portion 304 so that an axial direction (same direction as the extending direction S302 of the end part of the second ground wire E302) thereof is inclined with respect to an axial direction (same direction as the extending direction S301 of the end part of the first ground wire E301) of the first wire-side terminal portion 304.
In the ground connection body 301 assembled as described above, since the second ground wire E302 is arranged to approach the first ground wire E301 with distance from the ground-side terminal portion 305, an arrangement space can be reduced as compared with the case where two ground wires E301 and E302 are arranged in parallel.
(Modifications of Fourth Embodiment)
Although the second ground terminal 20 in which the second wire-side terminal portion 21 and the second ground-side terminal portion 22 are linearly arranged is obliquely arranged with respect to the first ground terminal 310 to incline the second ground wire E302 in the direction toward the first ground wire E301, the present invention is not limited to this. For example, as shown in
Note that the specific embodiments described above main include inventions having the following configurations.
The above ground connection body is provided with a first ground-side terminal portion including a first ground location connection part connectable to a first ground location and a second ground location connection part connectable to a second ground location, and two wire-side terminal portions (i.e. first and second wire-side terminal portions) connected to the ground-side terminal portion in order to improve reliability in connecting a plurality of ground wires to ground locations.
However, if ground wires connected to the two wire-side terminal portions extend in parallel, there arises a new problem of increasing an arrangement space. Accordingly, to solve such a problem, the two wire-side terminal portions are arranged obliquely to each other in the above ground connection body.
Specifically, the above ground connection body is a ground connection body for collectively connecting ground wires to a plurality of ground locations provided on a wall surface in a vehicle and provided with a first wire-side terminal portion shaped to be connectable to an end of a first ground wire, a second wire-side terminal portion shaped to be connectable to an end of a second ground wire different from the first ground wire, and a first ground-side terminal portion electrically connected to each of the first and second wire-side terminal portions, including a first ground location connection part connectable to a first ground location and a second ground location connection part connectable to a second ground location different from the first ground location and having such a relative positional relationship that the first and second ground location connection parts are simultaneously connectable to the first and second ground locations, wherein the second wire-side terminal portion is obliquely arranged relatively with respect to the first wire-side terminal portion so that the second ground wire connected to the second wire-side terminal portion extends in a direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion.
According to such a configuration, the first ground-side terminal portion includes the first and second ground location connection parts so as to be connected to a plurality of ground locations. Thus, if at least one of the ground locations is sufficiently connected, the first ground wire connected to the first wire-side terminal portion and the second ground wire connected to the second wire-side terminal portion can be connected to the ground location. As a result, reliability can be improved.
In addition, in the above ground connection body, the second wire-side terminal portion is obliquely arranged relatively with respect to the first wire-side terminal portion so that the second ground wire connected to the second wire-side terminal portion extends in the direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in such a configuration simultaneously connectable to the plurality of ground locations. Thus, the second ground wire connected to the second wire-side terminal portion can be obliquely arranged to approach the first ground wire connected to the first wire-side terminal portion. Therefore, a distance between these wires becomes shorter, with the result that a wire arrangement space can be reduced in the case of collectively connecting the plurality of ground wires to the ground locations.
End parts of the first and second wire-side terminal portions closer to the first ground-side terminal portion are preferably arranged in a direction parallel to an arrangement direction of the first and second ground location connection parts of the first ground-side terminal portion.
According to such a configuration, the first ground-side terminal portion needs to have a certain width in the arrangement direction of the first and second ground location connection parts as compared with a direction perpendicular to this arrangement direction. However, it is possible to suppress an increase of a space taken up by the ground connection body by arranging the end parts of the first and second wire-side terminal portions closer to the first ground-side terminal portion in parallel to the arrangement direction of these connection parts.
Further, the second wire-side terminal portion is preferably obliquely arranged relatively with respect to the first wire-side terminal portion so that an axial direction thereof is inclined with respect to that of the first wire-side terminal portion.
According to such a configuration, the axial direction of the second wire-side terminal portion is inclined with respect to that of the first wire-side terminal portion. Thus, the second ground wire connected to the second wire-side terminal portion can be reliably obliquely arranged to approach the first ground wire connected to the first wire-side terminal portion. As a result, the wire arrangement space can be more reliably reduced.
Furthermore, preferably, a second ground-side terminal portion is further provided which includes a first ground location connection part connectable to the first ground location in addition to the first ground-side terminal portion, the ground connection body includes a first ground terminal and a second ground terminal, the first ground terminal is formed by connecting the first wire-side terminal portion and the first ground-side terminal portion, the second ground terminal is formed by connecting the second wire-side terminal portion and the second ground-side terminal portion, the first ground-side terminal portion includes a first coupling portion to be coupled to the second ground-side terminal portion in such a relative positional relationship that the first ground location connection part of the first ground-side terminal portion and the first ground location connection part of the second ground-side terminal portion are simultaneously connectable to the first ground location and a first crimping portion configured to crimp the second ground-side terminal portion to the first coupling portion by pressing the second ground-side terminal portion toward the first coupling portion.
According to such a configuration, in the case of including each of the first ground terminal with the first wire-side terminal portion and the first ground-side terminal portion and the second ground terminal with the second wire-side terminal portion and the second ground-side terminal portion, the second ground-side terminal portion of the second ground terminal is coupled to the first coupling portion of the first ground-side terminal portion of the first ground terminal and the first crimping portion crimps the second ground-side terminal portion to the first coupling portion by pressing the second ground-side terminal portion toward the first coupling portion. Thus, the second ground wire connected to the second wire-side terminal portion of the second ground terminal can be reliably connected to at least one of the first and second ground locations.
Further, preferably, the second wire-side terminal portion and the second ground-side terminal portion are linearly connected relative to each other and the first coupling portion is coupled to the second ground-side terminal portion so that the second wire-side terminal portion is inclined in a direction toward the first wire-side terminal portion with distance from the first ground-side terminal portion.
According to such a configuration, even if an existing ground terminal structured such that a wire-side terminal portion and a ground-side terminal portion are linearly arranged relative to each other as the second ground terminal, the second wire-side terminal portion can be obliquely arranged in the direction toward the first wire-side terminal portion with distance from the first ground-side terminal portion by coupling the second ground-side terminal portion to the first coupling portion. This enables the second ground wire connected to the second wire-side terminal portion to be obliquely inclined to approach the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in a manner similar to the above. Thus, the wire arrangement space can be reduced in the case of collectively connecting a plurality of ground wires to the ground locations. Further, since an existing ground terminal can be utilized as the second ground terminal, parts can be shared.
Further, the second wire-side terminal portion is preferably obliquely connected to the second ground-side terminal portion so that the second ground wire connected to the second wire-side terminal portion extends in a direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in a state where the second ground-side terminal portion is coupled to the first coupling portion.
According to such a configuration, the second wire-side terminal portion is obliquely connected to the second ground-side terminal portion. Thus, in performing an operation of coupling the second ground-side terminal portion to the first coupling portion, it is not necessary to proceed with the coupling operation while considering an angle of inclination between the first ground wire and the second ground wire, whereby a reduction in operation speed can be suppressed. In addition, in the state where the second ground-side terminal portion is coupled to the first coupling portion, the second wire-side terminal portion can be obliquely arranged in the direction toward the first wire-side terminal portion. This enables the second ground wire connected to the second wire-side terminal portion to be obliquely arranged to approach the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in a manner similar to the above. As a result, the wire arrangement space can be reduced in the case of collectively connecting a plurality of ground wires to the ground locations.
Further, preferably, a third wire-side terminal portion is further provided which is shaped to be connectable to an end of a third ground wire different from the first and second ground wires, and the third wire-side terminal portion is electrically connected to the first ground-side terminal portion and obliquely arranged relatively with respect to the first wire-side terminal portion so that the third ground wire connected to the third wire-side terminal portion extends in a direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion.
According to such a configuration, the third wire-side terminal portion is obliquely arranged relatively with respect to the first wire-side terminal portion so that the third ground wire connected to the third wire-side terminal portion extends in the direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion. Thus, the third ground wire connected to the third wire-side terminal portion can be obliquely arranged to approach the first ground wire connected to the first wire-side terminal portion. In this way, distances between these wires become shorter, with the result that the wire arrangement space can be reduced in the case of collectively connecting the first to third ground wires to the ground locations.
The third wire-side terminal portion is preferably obliquely arranged relatively with respect to the first wire-side terminal portion so that an axial direction thereof is inclined with respect to that of the first wire-side terminal portion.
According to such a configuration, the axial direction of the third wire-side terminal portions is inclined with respect to that of the first wire-side terminal portion. Thus, the third ground wire connected to the third wire-side terminal portion can be reliably obliquely arranged to approach the first ground wire connected to the first wire-side terminal portion. This enables the wire arrangement space to be more reliably reduced.
Further, preferably, a third ground-side terminal portion is further provided which includes a second ground location connection part connectable to the second ground location in addition to the first ground-side terminal portion, the ground connection body includes a first ground terminal and a third ground terminal, the first ground terminal is formed by connecting the first wire-side terminal portion and the first ground-side terminal portion, the third ground terminal is formed by connecting the third wire-side terminal portion and the third ground-side terminal portion, the first ground-side terminal portion includes a second coupling portion to be coupled to the third ground-side terminal portion in such a relative positional relationship that the second ground location connection part of the first ground-side terminal portion and the second ground location connection part of the third ground-side terminal portion are simultaneously connectable to the second ground location and a second crimping portion configured to crimp the third ground-side terminal portion to the second coupling portion by pressing the third ground-side terminal portion toward the second coupling portion.
According to such a configuration, in the case of including each of the first ground terminal with the first wire-side terminal portion and the first ground-side terminal portion and the third ground terminal with the third wire-side terminal portion and the third ground-side terminal portion, the third ground-side terminal portion of the third ground terminal is coupled to the second coupling portion of the first ground-side terminal portion of the first ground terminal and the second crimping portion crimps the third ground-side terminal portion to the second coupling portion by pressing the third ground-side terminal portion toward the second coupling portion. Thus, the third ground wire connected to the third wire-side terminal portion of the third ground terminal can be reliably connected to at least one of the first and third ground locations.
Further, preferably, the third wire-side terminal portion and the third ground-side terminal portion are linearly connected relative to each other and the second coupling portion is coupled to the third ground-side terminal portion so that the third wire-side terminal portion is inclined in a direction toward the first wire-side terminal portion with distance from the first ground-side terminal portion.
According to such a configuration, even if an existing ground terminal structured such that a wire-side terminal portion and a ground-side terminal portion are linearly arranged relative to each other as the third ground terminal, the third wire-side terminal portion can be obliquely arranged in the direction toward the first wire-side terminal portion with distance from the first ground-side terminal portion by coupling the third ground-side terminal portion to the second coupling portion. This enables the third ground wire connected to the third wire-side terminal portion to be obliquely inclined to approach the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in a manner similar to the above. As a result, the wire arrangement space can be reduced in the case of collectively connecting the first to third ground wires to the ground locations. Further, since an existing ground terminal can be utilized as the third ground terminal, parts can be shared.
Further, the third wire-side terminal portion is preferably obliquely connected to the third ground-side terminal portion so that the third ground wire connected to the third wire-side terminal portion extends in a direction toward the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in a state where the third ground-side terminal portion is coupled to the second coupling portion.
According to such a configuration, the third wire-side terminal portion is obliquely connected to the third ground-side terminal portion. Thus, in performing an operation of coupling the third ground-side terminal portion to the second coupling portion, it is not necessary to proceed with the coupling operation while considering an angle of inclination between the first ground wire and the third ground wire, whereby a reduction in operation speed can be suppressed. In addition, in the state where the third ground-side terminal portion is coupled to the second coupling portion, the third wire-side terminal portion can be obliquely arranged in the direction toward the first wire-side terminal portion with distance from the first ground-side terminal portion. This enables the third ground wire connected to the third wire-side terminal portion to be obliquely arranged to approach the first ground wire connected to the first wire-side terminal portion with distance from the first ground-side terminal portion in a manner similar to the above. As a result, the wire arrangement space can be reduced in the case of collectively connecting the first to third ground wires to the ground locations.
Number | Date | Country | Kind |
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2011-283241 | Dec 2011 | JP | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/JP2012/008159 | 12/20/2012 | WO | 00 | 6/26/2014 |