The present disclosure relates to a joint connector.
A joint connector is known from Japanese Patent Laid-Open Publication No. H07-073938. This joint connector includes a housing and a joint terminal in which a plurality of tab-like contact portions are coupled. The joint terminal is press-fit into a terminal mounting groove portion provided in the housing.
Patent Document 1: JP H07-073938 A
In the joint connector according to the above technique, since the joint terminal is press-fit into the housing, there has been a problem that the efficiency of an assembling operation of the joint terminal and the housing is reduced.
The present disclosure was completed on the basis of the above situation and aims to provide a joint connector with improved efficiency of an assembling operation.
The present disclosure is directed to a joint connector for electrically connecting a plurality of wires, the joint connector including a housing and a joint terminal to be disposed in the housing, wherein the joint terminal includes a plurality of branch portions arranged along an arrangement direction, a plurality of wire connecting portions respectively continuous with the plurality of branch portions and to be connected to the plurality of wires, and a coupling portion for electrically connecting the plurality of branch portions by coupling the plurality of branch portions, the coupling portion is in the form of a plate extending in the arrangement direction and is bent, and the coupling portion is engaged with the housing.
According to the present disclosure, it is possible to improve the efficiency of an assembling operation of a joint connector.
First, embodiments of the present disclosure are listed and described.
(1) The present disclosure is preferably directed to a joint connector for electrically connecting a plurality of wires, the joint connector including a housing and a joint terminal to be disposed in the housing, wherein the joint terminal includes a plurality of branch portions arranged along an arrangement direction, a plurality of wire connecting portions respectively continuous with the plurality of branch portions and to be connected to the plurality of wires, and a coupling portion for electrically connecting the plurality of branch portions by coupling the plurality of branch portions, the coupling portion is in the form of a plate extending in the arrangement direction and is bent, and the coupling portion is engaged with the housing.
The joint terminal can be easily mounted into the housing by engaging the bent coupling portion with the housing. In this way, the efficiency of an assembling operation of the joint terminal and the housing can be improved as compared to the case where the joint terminal is press-fit into the housing. Thus, the efficiency of an assembling operation of the joint connector can be improved.
(2) Preferably, the coupling portion includes a plurality of bent portions bent to project from a plate surface of the coupling portion, the plurality of bent portions include at least one pitch adjusting bent portion, and the pitch adjusting bent portion has a bent shape different from those of the other bent portions.
By making the bent shape of the pitch adjusting bent portion different from those of the other bent portions, pitch intervals between adjacent ones of the plurality of wire connecting portions can be adjusted.
(3) Preferably, end engaging portions to be engaged with the housing are provided on both end parts of the coupling portion in the arrangement direction.
According to the above configuration, the joint terminal can be mounted into the housing by a simple method of engaging the end engaging portions provided on the both end parts of the coupling portion with the housing with the coupling portion stretched in the arrangement direction to generate a resilient force.
(4) Preferably, the coupling portion includes a plurality of bent portions bent to project from a plate surface of the coupling portion, and the housing includes a plurality of individual engaging portions to be respectively resiliently engaged with the plurality of bent portions.
By respectively engaging the bent portions provided in the coupling portion and the individual engaging portions provided in the housing, the positions of the plurality of bent portions in the arrangement direction can be individually adjusted. In this way, the accuracy of the pitch intervals between adjacent ones of the plurality of wire connecting portions can be improved.
(5) Preferably, each of the plurality of wire connecting portions includes a terminal body having a plurality of sandwiching pieces for sandwiching the wire and a slide portion slidable with respect to the terminal body along an extending direction of the wire, the slide portion has a tubular shape and the plurality of sandwiching pieces are accommodated inside the slide portion, the slide portion includes a contact portion projecting inward from an inner wall of the slide portion and configured to press the plurality of sandwiching pieces toward the wire by coming into contact with the plurality of sandwiching pieces, and the contact portion comes into contact with the plurality of sandwiching pieces when the slide portion moves to a contact position.
According to the above configuration, the sandwiching pieces are pressed toward the wire by the contact portion by sliding the slide portion to the contact position. In this way, the wire and the wire connecting portion can be electrically connected via the sandwiching pieces.
(6) Preferably, the terminal body includes an intersecting wall portion intersecting a sliding direction of the slide portion to the contact position on a front end part in the sliding direction.
When the slide portion is slid in the sliding direction, the sandwiching pieces are pushed forward in the sliding direction by the slide portion. At this time, a forward movement of the terminal body in the sliding direction can be suppressed by disposing a pressing jig in front of the intersecting wall portion and bringing this pressing jig into contact with the intersecting wall portion from front. In this way, a forward positional deviation of the terminal body in the sliding direction can be suppressed when the slide portion is slid to the contact position.
(7) Preferably, each of the plurality of wire connecting portions includes a crimping portion to be crimped to the wire.
The joint terminal and the wire can be connected by a simple method called crimping.
Hereinafter, embodiments of the present disclosure are described. The present disclosure is not limited to these illustrations and is intended to be represented by claims and include all changes in the scope of claims and in the meaning and scope of equivalents.
A first embodiment of the present disclosure is described with reference to
[Joint Connector 10]
As shown in
As shown in
[Lower Housing 30]
As shown in
As shown in
A plurality of (four in this embodiment) partition walls 35 extending rearward from rear end parts of the respective partition ribs 34 are formed on the bottom wall 31 of the lower housing 30. The partition walls 35 extend up to a rear end part of the bottom wall 31.
As shown in
As shown in
As shown in
[Upper Housing 60]
As shown in
The upper housing 60 includes an upper wall 61, side walls 62 extending downward from both left and right side edges of the upper wall 61 and a rear wall 63 extending downward from the rear edge of the upper wall 61.
As shown in
As shown in
As shown in
As shown in
[Joint Terminal 12]
As shown in
The joint terminal 12 is formed by press-working a metal plate material into a predetermined shape. An arbitrary metal such as copper, copper alloy, aluminum, aluminum alloy and stainless steel can be appropriately selected as a metal constituting the joint terminal 12 if necessary. A terminal body 15 according to this embodiment is made of copper or copper alloy. A plating layer may be formed on the surface of the joint terminal 12. An arbitrary metal such as tin, nickel and silver can be appropriately selected as a metal constituting the plating layer if necessary. Tin plating is applied to the joint terminal 12 according to this embodiment.
[Coupling Portion 19]
The coupling portion 19 is formed by bending a metal plate material elongated in the lateral direction. The coupling portion 19 is formed with a plurality of (three in this embodiment) bent portions 21 bent to have a chevron shape projecting upward when viewed from front. In other words, the bent portions 21 are bent to project upward from a plate surface of the coupling portion 19 expanding in the front-rear direction and lateral direction in a state before being bent. Both left and right end parts of the coupling portion 19 are bent obliquely upwardly and serve as end engaging portions 22 to be resiliently engaged with the locking recesses 33 of the lower housing 30.
The coupling portion 19 is resiliently stretchable in the lateral direction as a whole by deforming the bent portions 21 to open or close in the lateral direction. As a result, the coupling portion 19 is compressed or elongated in the lateral direction, thereby generating a resilient force in the coupling portion 19. The coupling portion 19 is formed by cutting an elongated carrier 50 to a predetermined length and applying bending.
[Branch Portions 20]
The coupling portion 19 is formed with a plurality of (four in this embodiment) branch portions 20 extending rearward. The branch portions 20 are formed to be elongated in the front-rear direction. The aforementioned bent portions 21 are formed in regions between parts of the coupling portion 19 where the plurality of branch portions 20 are provided.
Locking wall portions 24 extending upward from both left and right side edges of the branch portion 20 are formed in a rear half of the branch portion 20. The front end edge of the locking wall portion 24 is bent inwardly in the lateral direction and serves as an intersecting wall portion 49 intersecting the front-rear direction. In this embodiment, the locking wall portion 24 is formed perpendicular to the front-rear direction. A vertical height of the locking wall portion 24 is set to be substantially half the height of the bent portion 21. The wire connecting portion 17 is continuous behind the branch portion 20.
[Wire Connecting Portions 17]
The wire connecting portion 17 includes a terminal body 15 made of metal and a slide portion 16 relatively slidable with respect to the terminal body 15.
[Terminal Body 15]
As shown in
An upper holding protrusion 23A projecting downward is provided at a position forward of a rear end part on the lower surface of the upper sandwiching piece 18A. A lower holding protrusion 23B projecting upward is provided on a rear end part of the upper surface of the lower sandwiching piece 18B. The lower and upper holding protrusions 23B, 23A are provided at positions shifted in the front-rear direction.
The lower surface of the upper sandwiching piece 18A and the upper surface of the lower sandwiching piece 18B bite into an oxide film formed on the surface of the core 13 to strip the oxide film, whereby a metal surface of the core 13 is exposed. The core 13 and the terminal body 15 are electrically connected by the contact of this metal surface and the upper and lower sandwiching pieces 18A, 18B.
[Slide Portions 16]
As shown in
As shown in
As shown in
As shown in
With the locking projection 28 of the terminal body 15 and the partial lock receiving portion 26 of the slide portion 16 locked, the slide portion 16 is held at a partial locking position with respect to the terminal body 15. In this state, the upper and lower contact portions 25A, 25B of the slide portion 16 are separated rearward from the rear end edges of the upper and lower sandwiching pieces 18A, 18B of the terminal body 15. Further, in this state, a distance between the upper and lower sandwiching pieces 18A, 18B is set larger than a diameter of the core 13.
With the locking projection 28 of the terminal body 15 and the full lock receiving portion 27 of the slide portion 16 locked, the slide portion 16 is held at a full locking position with respect to the terminal body 15. As shown in
As described above, the slide portion 16 is slidable between the partial locking position and the full locking position described above while being externally fit to the region of the terminal body 15 where the upper and lower sandwiching pieces 18A, 18B are provided.
As shown in
As shown in
As shown in
As shown in
[Assembling Process of Joint Connector 10]
Next, an example of an assembling process of the joint connector 10 according to this embodiment is described. The assembling process of the joint connector 10 is not limited to the one described below.
As shown in
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As shown in
As shown in
Further, the coupling portion 19 is accommodated from above along the inner surfaces of the side walls 32 of the lower housing 30 while being somewhat compressed in the lateral direction. Then, the tips of the end engaging portions 22 slide in contact with the side walls 32 of the lower housing 30. In this way, the joint terminal 12 is smoothly guided to a predetermined position in the lower housing 30. When the end engaging portions 22 reach the locking recesses 33 of the lower housing 30, the coupling portion 19 is restored and the end engaging portions 22 are locked to the upper walls of the locking recesses 33 from below. In this way, the coupling portion 19 of the joint terminal 12 is held in the lower housing 30 while being prevented from coming out upward.
The cores 13 of the wires 11 are exposed by stripping the insulation coatings 14 by a known method. As shown in
Subsequently, as shown in
When the slide portion 16 is moved forward, the side wall of the slide portion 16 is restored and the locking projection 28 of the terminal body 15 and the full lock receiving portion 27 of the slide portion 16 are resiliently locked. In this way, the slide portion 16 is held at the full locking position with respect to the terminal body 15.
With the slide portion 16 held at the full locking position with respect to the terminal body 15, the upper contact portion 25A of the slide portion 16 comes into contact with the upper sandwiching piece 18A of the terminal body 15 from above to press the upper sandwiching piece 18A downward. Further, the lower contact portion 25B of the slide portion 16 comes into contact with the lower sandwiching piece 18B of the terminal body 15 from below to press the lower sandwiching piece 18B upward. In this way, the core 13 is vertically sandwiched by the upper and lower sandwiching pieces 18A, 18B (see
As shown in
With the core 13 vertically sandwiched by the upper and lower sandwiching pieces 18A, 18B, the core 13 is sandwiched by the upper holding protrusion 23A of the upper sandwiching piece 18A and the lower holding protrusion 23B of the lower sandwiching piece 18B, thereby extending in the front-rear direction and being held in the state bent in the vertical direction. In this way, the core 13 can be firmly held, wherefore a holding force of the wire 11 and the joint terminal 12 can be enhanced when a pulling force is applied to the wire 11.
If the slide portion 16 is pushed forward by the jig 45, the terminal body 15 and the branch portion 20 are also pushed forward. At this time, the intersecting wall portions 49 come into contact with the pressing jig 48 from behind, thereby suppressing forward movements of the terminal body 15 and the branch portion 20. After the joint terminal 12 and the wires 11 are electrically connected, the pressing jig 48 is removed.
As shown in
[Functions and Effects of Embodiment]
Next, functions and effects of this embodiment are described. This embodiment relates to the joint connector 10 for electrically connecting the plurality of wires 11, the joint connector 10 including the housing 29 and the joint terminal 12 to be disposed in the housing 29, wherein the joint terminal 12 includes the plurality of branch portions 20 arranged along the lateral direction, the plurality of wire connecting portions 17 respectively continuous with the plurality of branch portions 20 and to be connected to the plurality of wires 11, and the coupling portion 19 for electrically connecting the plurality of branch portions 20 by coupling the plurality of branch portions 20, the coupling portion 19 is in the form of a plate extending in the lateral direction is bent, and the coupling portion 19 is engaged with the housing 29.
By engaging the bent coupling portion 19 with the housing 29, the joint terminal 12 can be easily mounted into the housing 29. In this way, the efficiency of an assembling operation of the joint terminal 12 and the housing 29 can be improved as compared to the case where the joint terminal 12 is press-fit into the housing 29. Therefore, the efficiency of the assembling operation of the joint connector 10 can be improved.
Further, according to this embodiment, the end engaging portions 22 to be engaged with the housing 29 are provided on the both end parts of the coupling portion 19 in the lateral direction.
According to the above configuration, the joint terminal 12 can be mounted into the housing 29 by a simple method of engaging the end engaging portions 22 provided on the both end parts of the coupling portion 19 with the housing 29 with the coupling portion 19 stretched in the lateral direction to generate a resilient force.
According to this embodiment, each of the plurality of wire connecting portions 17 includes the terminal body 15 having the upper and lower sandwiching portions 18A, 18B for sandwiching the wire 11 and the slide portion 16 slidable with respect to the terminal body 15 along the extending direction of the wire 11, the slide portion 16 has a tubular shape, the upper and lower sandwiching portions 18A, 18B are accommodated into the slide portion 16, the slide portion 16 includes the upper and lower contact portions 25A, 25B projecting inward from the inner wall of the slide portion 16 and configured to press the upper and lower sandwiching portions 18A, 18B toward the wire 11 by coming into contact with the upper and lower sandwiching portions 18A, 18B, and the upper and lower contact portions 25A, 25B come into contact with the upper and lower sandwiching portions 18A, 18B when the slide portion 16 moves to a contact position.
According to the above configuration, by sliding the slide portion 16 to the contact position, the upper and lower sandwiching portions 18A, 18B are pressed toward the wire 11 by the upper and lower contact portions 25A, 25B. In this way, the wire 11 and the wire connecting portion 17 can be electrically connected via the upper and lower sandwiching portions 18A, 18B.
Further, according to this embodiment, the terminal body 15 includes the intersecting wall portions 49 intersecting a sliding direction of the slide portion 16 to the contact position on a front end part in the sliding direction.
When the slide portion 16 is slid to the contact position, the upper and lower sandwiching portions 18A, 18B are pressed forward in the sliding direction by the slide portion 16. At this time, by disposing the pressing jig 48 in front of the intersecting wall portions 49 and bringing this pressing jig 48 into contact with the intersecting wall portions 49 from front, a forward movement of the terminal body 15 in the sliding direction can be suppressed during the movement of the slide portion 16.
Next, a second embodiment of the present disclosure is described with reference to
The joint terminal 70 according to this embodiment is formed with three branch portions 20 and three wire connecting portions 17 continuous with the branch portions 20. Pitch intervals in the lateral direction between adjacent ones of the three wire connecting portions 17 are different. The pitch interval between the wire connecting portion 17 in a center of the coupling portion 71 and the wire connecting portion 17 on a left end part is wider than that between the wire connecting portion 17 in the center of the coupling portion 71 and the wire connecting portion 17 on a right end part.
Since the configuration other than the above is substantially similar to that of the first embodiment, the same members are denoted by the same reference signs and repeated description is omitted.
According to this embodiment, the coupling portion 71 includes the plurality of bent portions 72A, 72B bent to project from a plate surface of the coupling portion 71, the plurality of bent portions 72A, 72B include at least one pitch adjusting bent portion 72B, and the pitch adjusting bent portion 72B has a bent shape different from that of the other bent portion 72A.
The pitch intervals between adjacent ones of the plurality of wire connecting portions 17 can be adjusted by making the bent shape of the pitch adjusting bent portion 72B different from that of the other bent portion 72A and changing the widths in the lateral direction.
Next, a third embodiment of the present disclosure is described with reference to
Next, a fourth embodiment of the present disclosure is described with reference to
Next, a joint connector 100 according to a fifth embodiment of the present disclosure is described with reference to
As shown in
As shown in
Partition walls 110 extending in the front-rear direction are formed at intervals in the lateral direction on the bottom wall 108. As shown in
As shown in
A retraction recess 117 for avoiding interference with the insulation barrel portions 106 is formed to be concave upward at a position somewhat behind the second rear stop portion 116.
As shown in
Since the configuration other than the above is substantially similar to that of the first embodiment, the same members are denoted by the same reference signs and repeated description is omitted.
An example of an assembling process of the joint connector 100 according to this embodiment is described. The assembling process of the joint connector 100 is not limited to the one described below.
As shown in
As shown in
As shown in
As shown in
According to this embodiment, a coupling portion 118 includes the plurality of bent portions 114 bent to project in a direction intersecting a plate surface of the coupling portion 118, and the lower housing 107 includes a plurality of the partition walls 110 to be respectively resiliently engaged with the plurality of bent portions 114.
The bent portions 114 provided in the coupling portion 118 and the partition walls 110 provided in the lower housing 107 are respectively engaged, whereby the positions of the plurality of bent portions 114 in the lateral direction can be individually adjusted. In this way, the accuracy of pitch intervals between adjacent ones of the plurality of wire connecting portions 104 can be improved.
According to this embodiment, each of the plurality of wire connecting portions 104 includes the wire barrel portion 105 to be crimped to the core 13 of the wire 11.
In this way, the joint terminal 101 and the wires 11 can be connected by a simple method called crimping.
(1) The joint terminal 12 can be formed with an arbitrary number of the wire connecting portions 17 such as two, five or more.
(2) The joint terminal 70 may be provided with two or more pitch adjusting bent portions 72B.
(3) The slide portion 16 may have any arbitrary shape such as polygonal tube shapes including a triangular tube shape and a hexagonal tube shape and hollow cylindrical shapes.
10, 100: joint connector
11: wire
12, 70, 80, 90, 101: joint terminal
13: core
14: insulation coating
15: terminal body
16: slide portion
17, 104: wire connecting portion
18A: upper sandwiching piece
18B: lower sandwiching piece
19, 71, 82, 92, 118: coupling portion
20, 102: branch portion
21, 81, 91, 114: bent portion
22: end engaging portion
23A: upper holding protrusion
23B: lower holding protrusion
24, 103R, 103L: locking wall portion
25A: upper contact portion
25B: lower contact portion
26: partial lock receiving portion
27: full lock receiving portion
28: locking projection
29: housing
30, 107: lower housing
31, 108: bottom wall
32, 109: side wall
33: locking recess
34: partition rib
35, 110: partition wall
36, 111: locking claw
45: jig
46: jig contact portion
47: guiding portion
48: pressing jig
49: intersecting wall portion
50: carrier
60, 112: upper housing
61, 113: upper wall
62: side wall
63: rear wall
64: escaping groove
65: wire draw-out opening
66: lock claw
67: coupling portion accommodating portion
68: escaping slit
72A: bent portion
72B: pitch adjusting bent portion
105: wire barrel portion (crimping portion)
106: insulation barrel portion
115: first rear stop portion
116: second rear stop portion
117: retraction recess
Number | Date | Country | Kind |
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2019-193602 | Oct 2019 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2020/031060 | 8/18/2020 | WO |