Patent Application
20240388012
The present invention relates to a vehicular antenna device.
Conventionally, as in Patent Literature 1, for example, a vehicular antenna device including a cable connected to an electric device of a vehicle has been proposed.
However, in a case where there is a plurality of cables, there is a possibility that the electrical performance of the vehicular antenna device varies depending on the way of bundling of the plurality of cables.
Therefore, an example of an object of the present invention is to keep the electrical performance of the vehicular antenna device constant.
An vehicular antenna device according to the present invention includes: a first antenna; a second antenna; a first cable for the first antenna; a second cable for the second antenna; and a housing that holds the first antenna and the second antenna. The first cable and the second cable are held in a predetermined region of one surface of the housing.
As described above, according to the present invention, the electrical performance of the vehicular antenna device can be kept constant.
Hereinafter, the present embodiment will be described with reference to the drawings. Note that the embodiment is not limited to the following embodiment. In addition, the contents described in one embodiment are similarly applied to other embodiments in principle. Further, each embodiment and each modification can be appropriately combined.
In order to describe the directions, an x direction, a y direction, and a z direction are defined. The z direction is a direction in which a first case 11 and a second case 12 are arranged side by side. The x direction is one of horizontal directions perpendicular to the z direction. The y direction is one of horizontal directions perpendicular to the z direction and the x direction. In the present embodiment, the description will be given on the assumption that the x direction is the front-rear direction, the y direction is the left-right direction, and the z direction is the up-down direction. In
In the top view of
The first direction described in the claims corresponds to the z direction of the present embodiment. The second direction described in the claims corresponds to the y direction of the present embodiment. The first wall surface described in the claims corresponds to a first left side surface portion 11b, a first right side surface portion 11c, a first front surface portion 11d, and a first rear surface portion 11e of the present embodiment. The second wall surface described in the claims corresponds to a second left side surface portion 12b, a second right side surface portion 12c, a second front surface portion 12d, and a second rear surface portion 12e of the present embodiment. In addition, the first side portion described in the claims corresponds to an eleventh side portion 311b, a twelfth side portion 312b, a thirteenth side portion 313b, and a fourteenth side portion 314b of the present embodiment. In addition, the second side portion described in the claims corresponds to a twenty-first side portion 321b, a twenty-second side portion 322b, a twenty-third side portion 323b, and a twenty-fourth side portion 324b of the present embodiment.
(Region to which Vehicular Antenna Device 1 is Attached)
The vehicular antenna device 1 according to the present embodiment is provided inside an instrument panel of a vehicle, for example.
As illustrated in
The housing 10 includes a first case 11, a second case 12, and screws 13. The first case 11 and the second case 12 sandwich the antenna unit 30 in the z direction. The first case 11 and the second case 12 are fixed with the screws 13.
The antenna unit 30 includes the first antenna 31, a second antenna 32, a first substrate 33, a second substrate 34, a first cable 35, and a second cable 36.
The first case 11 has a substantially rectangular parallelepiped outer shape. As illustrated in
The upper surface portion 11a forms an upper surface of the first case 11. On the lower surface of the upper surface portion 11a, bosses 11f, a first attachment guide portion 11g, a first cable guide portion 11h, first inclined regions 11k, and first pins 11m are provided.
The first left side surface portion 11b extends downward in the z direction from a left end portion of the upper surface portion 11a, and forms a left side surface of the first case 11. On the inner surface of the first left side surface portion 11b, first claws 11n for attaching an eleventh element 311 and a thirteenth element 313 is provided.
The first right side surface portion 11c extends downward in the z direction from a right end portion of the upper surface portion 11a, and forms a right side surface of the first case 11. On the inner surface of the first right side surface portion 11c, first claws 11n for attaching a twelfth element 312 and a fourteenth element 314 are provided.
The first front surface portion 11d extends downward in the z direction from a front end portion of the upper surface portion 11a, and forms a front surface of the first case 11. A first cable holding portion 11i and a first holding portion receiving region 11j are provided at a lower left end of the first front surface portion 11d.
The first rear surface portion 11e extends downward in the z direction from a rear end portion of the upper surface portion 11a, and forms a rear surface of the first case 11.
The bosses 11f protrude downward in the z direction from the lower surface of the upper surface portion 11a, and are used for fixing to the second case 12 using the screws 13.
The first attachment guide portion 11g is provided in the vicinity of the center in the x direction of the first left side surface portion 11b and in the vicinity of the center in the x direction of the first right side surface portion 11c. The first attachment guide portion 11g provided in the vicinity of the first left side surface portion 11b protrudes downward in the z direction compared to the first left side surface portion 11b. The first attachment guide portion 11g provided in the vicinity of the first left side surface portion 11b is fitted to a second attachment guide portion 12g provided in the vicinity of the second left side surface portion 12b of the second case 12. As illustrated in
The first cable guide portion 11h has a wall shape protruding downward in the z direction from the lower surface of the upper surface portion 11a (see
The first cable holding portion 11i includes a cable clip that clamps a first body portion 35a of the first cable 35.
The first holding portion receiving region 11j has a recessed region into which a second cable holding portion 12i of the second front surface portion 12d of the second case 12 is fitted.
The first cable holding portion 11i is provided at a position closer to the first left side surface portion 11b than the first holding portion receiving region 11j. The first cable holding portion 11i and the first holding portion receiving region 11j are adjacent in the y direction and are configured to be located at substantially the same height in the z direction.
Four first inclined regions 11k are provided on the lower surface of the upper surface portion 11a.
As illustrated in
The first inclined region 11k for temporarily accommodating a thirteenth upper portion 313c of the thirteenth element 313 is provided on the rear side of the left end portion of the lower surface of the upper surface portion 11a. In the first inclined region 11k on the rear side of the left end portion of the lower surface of the upper surface portion 11a, an inclination (for example, an inclination such that the thickness of the upper surface portion 11a in the z direction becomes thin) is formed such that the recess in the z direction increases toward the first left side surface portion 11b. As illustrated in
In the present embodiment, an example will be described in which the first inclined region 11k temporarily accommodates the eleventh upper portion 311c and the like, and the eleventh upper portion 311c and the like are separated from the first inclined region 11k in a first hooking process to be described later. However, when the eleventh upper portion 311c and the like are larger than a predetermined dimension due to tolerance, the first inclined region 11k may be used as a region for accommodating at least a part of the eleventh upper portion 311c and the like even after attachment.
Four first pins 11m are provided on the lower surface of the upper surface portion 11a.
Each of the four first pins 11m includes a protrusion protruding downward in the z direction from the lower surface of the upper surface portion 11a.
In the vicinity of the first inclined region 11k on the front side of the left end portion of the lower surface of the upper surface portion 11a, the first pin 11m to be inserted into a first pin hole 31a provided in the eleventh upper portion 311c of the eleventh element 311 is provided (see
Two first claws 11n are provided on the inner surface of the first left side surface portion 11b, and two first claws 11n are provided on the inner surface of the first right side surface portion 11c. Each of the two first claws 11n provided on the first left side surface portion 11b includes a protrusion protruding to the right side in the y direction from the inner surface of the first left side surface portion 11b. Each of the two first claws 11n provided on the first right side surface portion 11c includes a protrusion protruding to the left side in the y direction from the inner surface of the first right side surface portion 11c. In order to hook first claw holes 31b, each of the four first claws 11n has a flat surface whose upper end is perpendicular to the z direction or an inclined surface approaching the upper surface portion 11a as being separated from the inner surface.
On the front side in the x direction of the first left side surface portion 11b, the first claw 11n to be inserted into a first claw hole 31b provided in the eleventh side portion 311b of the eleventh element 311 is provided (see
Dimensions of the first inclined region 11k, the first pin 11m, and the first claw 11n corresponding to one element of the first antenna 31 are determined under the following conditions. In a state where the first pin 11m is inserted into the first pin hole 31a in the upper portion of the element, said upper portion can be pushed into the first inclined region 11k (first pushing process, see
It is desirable that the two first claws 11n provided on the first left side surface portion 11b be located closer to the end portion on the lower side in the z direction of the first left side surface portion 11b. That is, the two first claws 11n provided on the first left side surface portion 11b are located in a region closer to the end portion on the lower side in the z direction of the first left side surface portion 11b than the upper surface portion 11a.
It is desirable that the two first claws 11n provided on the first right side surface portion 11c be located closer to the end portion on the lower side in the z direction of the first right side surface portion 11c. That is, the two first claws 11n provided on the first right side surface portion 11c are located in a region closer to the end portion on the lower side in the z direction of the first right side surface portion 11c than the upper surface portion 11a.
The second case 12 has a substantially rectangular parallelepiped outer shape.
As illustrated in
The lower surface portion 12a forms a lower surface of the second case 12. On the upper surface of the lower surface portion 12a, screw holes 12f, the second attachment guide portion 12g, a second cable guide portion 12h, second inclined regions 12k, and second pins 12m are provided.
The second left side surface portion 12b extends upward in the z direction from a left end portion of the lower surface portion 12a, and forms a left side surface of the second case 12.
The second right side surface portion 12c extends upward in the z direction from a right end portion of the lower surface portion 12a, and forms a right side surface of the second case 12.
The second front surface portion 12d extends upward in the z direction from a front end portion of the lower surface portion 12a, and forms a front surface of the second case 12. The second cable holding portion 12i and a second holding portion receiving region 12j are provided at an upper left end of the second front surface portion 12d. Second claws 12n for attaching a twenty-first element 321 and a twenty-second element 322 are provided on the inner surface of the second front surface portion 12d. However, in order to avoid physical interference with the first cable 35 and the second cable 36, the second claw 12n on the left side in the y direction of the second front surface portion 12d may be provided below the other second claws 12n in the z direction. In this case, a second claw hole 32b of the twenty-first side portion 321b of the twenty-first element 321 described later is provided below the other second claw holes 32b in the z direction. In addition, in order to avoid physical interference with the first cable 35 and the second cable 36, the second claw 12n (second claw 12n for attaching the twenty-first element 321) on the left side in the y direction of the second front surface portion 12d may be omitted. In this case, the second claw hole 32b of the twenty-first side portion 321b of the twenty-first element 321 to be described later is also omitted.
The second rear surface portion 12e extends upward in the z direction from a rear end portion of the lower surface portion 12a, and forms a rear surface of the second case 12. Second claws 12n for attaching a twenty-third element 323 and a twenty-fourth element 324 are provided on the inner surface of the second rear surface portion 12e.
A difference is provided in a dimension in the z direction between a surface perpendicular to the x direction (first front surface portion 11d, first rear surface portion 11e) of the first case 11 and a surface perpendicular to the y direction (first left side surface portion 11b, first right side surface portion 11c) of the first case 11. Specifically, the first left side surface portion 11b and the first right side surface portion 11c are configured to be longer in dimension in the z direction than the first front surface portion 11d and the first rear surface portion 11e (see
Screw holes 12f penetrate the lower surface portion 12a in the z direction, and are used to fix the first case 11 using the screws 13 (see
The second attachment guide portion 12g is provided in the vicinity of the center in the x direction of the second left side surface portion 12b and in the vicinity of the center in the x direction of the second right side surface portion 12c (see
The shapes and dimensions of the first case 11 and the second case 12 are determined such that, when the first case 11 and the second case 12 are attached, the first attachment guide portion 11g and the second attachment guide portion 12g come into contact with each other earlier than other portions of the first case 11 and the second case 12.
The second cable guide portion 12h has a wall shape protruding upward in the z direction from the upper surface of the lower surface portion 12a (see
The second cable holding portion 12i includes a cable clip that clamps a second body portion 36a of the second cable 36.
The second holding portion receiving region 12j has a notch into which the first cable holding portion 11i of the first front surface portion 11d of the first case 11 is fitted.
The second holding portion receiving region 12j is provided at a position closer to the second left side surface portion 12b than the second cable holding portion 12i. The second cable holding portion 12i and the second holding portion receiving region 12j are adjacent in the y direction and are configured to be located at substantially the same height in the z direction.
As illustrated in
In the present embodiment, an example is shown in which the one surface is a surface including the first front surface portion 11d of the first case 11 and the second front surface portion 12d of the second case 12. However, said one surface may include another surface of the first case 11 (such as the first left side surface portion 11b) and another surface of the second case 12 (such as the second left side surface portion 12b).
In said predetermined region, the first cable 35 and the second cable 36 are held at a distance of a dimension smaller than the diameter of the first ferrite core 35c or the second ferrite core 36c, that is, in a state of being substantially close to each other.
Further, in said predetermined region, it is desirable that the first cable 35 and the second cable 36 be held at a distance equal to or less than the diameter of the first cable 35 or the second cable 36, that is, in a state of being substantially close to each other.
Four second inclined regions 12k are provided on the upper surface of the lower surface portion 12a (see
The second inclined region 12k for temporarily accommodating a twenty-first lower portion 321c of the twenty-first element 321 is provided on the front side of the left end portion of the upper surface of the lower surface portion 12a. In the second inclined region 12k on the front side of the left end portion of the upper surface of the lower surface portion 12a, an inclination (for example, an inclination such that the thickness of the lower surface portion 12a in the z direction becomes thin) is formed such that the recess in the z direction increases toward the second front surface portion 12d. The second inclined region 12k for temporarily accommodating a twenty-second lower portion 322c of the twenty-second element 322 is provided on the front side of the right end portion of the upper surface of the lower surface portion 12a. In the second inclined region 12k on the front side of the right end portion of the upper surface of the lower surface portion 12a, an inclination (for example, an inclination such that the thickness of the lower surface portion 12a in the z direction becomes thin) is formed such that the recess in the z direction increases toward the second front surface portion 12d.
The second inclined region 12k for temporarily accommodating a twenty-third lower portion 323c of the twenty-third element 323 is provided on the rear side of the left end portion of the upper surface of the lower surface portion 12a. In the second inclined region 12k on the rear side of the left end portion of the upper surface of the lower surface portion 12a, an inclination (for example, an inclination such that the thickness of the lower surface portion 12a in the z direction becomes thin) is formed such that the recess in the z direction increases toward the second rear surface portion 12e. The second inclined region 12k for temporarily accommodating a twenty-fourth lower portion 324c of the twenty-fourth element 324 is provided on the rear side of the right end portion of the upper surface of the lower surface portion 12a. In the second inclined region 12k on the rear side of the right end portion of the upper surface of the lower surface portion 12a, an inclination (for example, an inclination such that the thickness of the lower surface portion 12a in the z direction becomes thin) is formed such that the recess in the z direction increases toward the second rear surface portion 12e.
In the present embodiment, an example will be described in which the second inclined region 12k temporarily accommodates the twenty-first lower portion 321c and the like, and the twenty-first lower portion 321c and the like are separated from the second inclined region 12k in a second hooking process to be described later. However, when the twenty-first lower portion 321c and the like are larger than a predetermined dimension due to tolerance, the second inclined region 12k may be used as a region for accommodating at least a part of the twenty-first lower portion 321c and the like even after attachment.
Four second pins 12m are provided on the upper surface of the lower surface portion 12a. Each of the four second pins 12m includes a protrusion protruding upward in the z direction from the upper surface of the lower surface portion 12a.
In the vicinity of the second inclined region 12k on the front side of the left end portion of the upper surface of the lower surface portion 12a, the second pin 12m to be inserted into a second pin hole 32a provided in the twenty-first lower portion 321c of the twenty-first element 321 is provided. In the vicinity of the second inclined region 12k on the front side of the right end portion of the upper surface of the lower surface portion 12a, the second pin 12m to be inserted into a second pin hole 32a provided in the twenty-second lower portion 322c of the twenty-second element 322 is provided. In the vicinity of the second inclined region 12k on the rear side of the left end portion of the upper surface of the lower surface portion 12a, the second pin 12m to be inserted into a second pin hole 32a provided in the twenty-third lower portion 323c of the twenty-third element 323 is provided. In the vicinity of the second inclined region 12k on the rear side of the right end portion of the upper surface of the lower surface portion 12a, the second pin 12m to be inserted into a second pin hole 32a provided in the twenty-fourth lower portion 324c of the twenty-fourth element 324 is provided.
Two second claws 12n are provided on the inner surface of the second front surface portion 12d, and two second claws 12n are provided on the inner surface of the second rear surface portion 12e. Each of the two second claws 12n provided on the second front surface portion 12d includes a protrusion protruding to the rear side in the x direction from the inner surface of the second front surface portion 12d. Each of the two second claws 12n provided on the second rear surface portion 12e includes a protrusion protruding to the front side in the x direction from the inner surface of the second rear surface portion 12e. In order to hook the second claw holes 32b, each of the four second claws 12n has a flat surface whose lower end is perpendicular to the z direction, or an inclined surface approaching the lower surface portion 12a as being separated from the inner surface.
On the left side in the y direction of the second front surface portion 12d, the second claw 12n to be inserted into the second claw hole 32b provided in the twenty-first side portion 321b of the twenty-first element 321 is provided (not illustrated). On the right side in the y direction of the second front surface portion 12d, the second claw 12n to be inserted into the second claw hole 32b provided in the twenty-second side portion 322b of the twenty-second element 322 is provided (not illustrated). On the left side in the y direction of the second rear surface portion 12e, the second claw 12n to be inserted into the second claw hole 32b provided in the twenty-third side portion 323b of the twenty-third element 323 is provided. On the right side in the y direction of the second rear surface portion 12e, the second claw 12n to be inserted into the second claw hole 32b provided in the twenty-fourth side portion 324b of the twenty-fourth element 324 is provided.
Dimensions of the second inclined region 12k, the second pin 12m, and the second claw 12n corresponding to one element of the second antenna 32 are determined under the following conditions. In a state where the second pin 12m is inserted into the second pin hole 32a in the lower portion of the element, said lower portion can be pushed into the second inclined region 12k (second pushing process). At this time, the element is bent such that the end portion of the lower portion and side portion of said element approach each other, and the angle formed by the lower portion and the side portion of said element when viewed from the y direction becomes smaller than the vertical angle. In a state where the second pin 12m is inserted into the second pin hole 32a in said lower portion and said lower portion is pushed into the second inclined region 12k, the second claw 12n can be inserted into the second claw hole 32b in the side portion of said element (second claw insertion process). Thereafter, the state in which said lower portion is pushed into the second inclined region 12k is released by pulling up said side portion. At this time, the element tries to return to the original state, and the second claw 12n is hooked to the second claw hole 32b (second hooking process). The original state referred to herein is a state in which the lower portion and the side portion of the element are substantially vertical.
It is desirable that the two second claws 12n provided on the second front surface portion 12d be located closer to the end portion on the upper side in the z direction of the second front surface portion 12d. That is, the two second claws 12n provided on the second front surface portion 12d are located in a region closer to the end portion on the upper side in the z direction of the second front surface portion 12d than the lower surface portion 12a.
It is desirable that the two second claws 12n provided on the second rear surface portion 12e be located closer to the end portion on the upper side in the z direction of the second rear surface portion 12e. That is, the two second claws 12n provided on the second rear surface portion 12e are located in a region closer to the end portion on the upper side in the z direction of the second rear surface portion 12e than the lower surface portion 12a.
The screws 13 are used to attach the first case 11 and the second case 12 (see
The first antenna 31 includes the eleventh element 311, the twelfth element 312, the thirteenth element 313, and the fourteenth element 314 (see
The eleventh element 311 has the eleventh arm portion 311a, the eleventh side portion 311b, and the eleventh upper portion 311c. The eleventh arm portion 311a constitutes a proximal end region of the eleventh element 311 and has a surface perpendicular to the xy plane. The eleventh arm portion 311a extends from the front side of the left end portion of the first substrate 33 toward the left front direction. The proximal end portion of the eleventh side portion 311b is connected to the distal end portion of the eleventh arm portion 311a and has a surface perpendicular to the y direction. The eleventh side portion 311b extends from the distal end portion of the eleventh arm portion 311a in the x direction and in a direction away from the thirteenth element 313. The proximal end portion of the eleventh upper portion 311c is connected to an upper end portion of the eleventh side portion 311b and has a surface perpendicular to the z direction. The eleventh upper portion 311c extends from the upper end portion of the eleventh side portion 311b in the y direction and in a direction approaching the twelfth element 312. The eleventh element 311 is configured such that a distal end region (region away from the first substrate 33) is wider than a proximal end region (region close to the first substrate 33).
The eleventh side portion 311b is provided with the first claw hole 31b. The eleventh upper portion 311c is provided with the first pin hole 31a.
The eleventh element 311 is attached to the upper surface portion 11a and the first left side surface portion 11b of the first case 11 in the following manner. The first pin 11m corresponding to the eleventh upper portion 311c is fitted into the first pin hole 31a of the eleventh upper portion 311c. A connection region of the eleventh upper portion 311c with the eleventh side portion 311b is pushed upward in the z direction into the first inclined region 11k corresponding to the eleventh upper portion 311c (first pushing process). Therefore, the eleventh upper portion 311c is temporarily in an inclined state not parallel to the xy plane. Further, the eleventh element 311 is bent such that the end portion on the right side in the y direction of the eleventh upper portion 311c and the end portion on the lower side in the z direction of the eleventh side portion 311b approach each other, and an angle formed by the eleventh upper portion 311c and the eleventh side portion 311b when viewed from the x direction becomes smaller than the vertical angle. The first claw 11n of the first left side surface portion 11b corresponding to the eleventh side portion 311b is fitted into the first claw hole 31b of the eleventh side portion 311b (first claw insertion process). Thereafter, by pulling down the eleventh side portion 311b downward in the z direction or the like, the state in which the connection region of the eleventh upper portion 311c with the eleventh side portion 311b is pushed into the first inclined region 11k is released. At this time, the eleventh element 311 tries to return to the original state (state in which the eleventh upper portion 311c and the eleventh side portion 311b are substantially vertical), and the first claw 11n is hooked to the first claw hole 31b (first hooking process). The upper end of the first claw hole 31b of the eleventh side portion 311b and the upper end of the first claw 11n of the first left side surface portion 11b corresponding to the eleventh side portion 311b come into contact with each other. That is, the eleventh element 311 becomes in a state in which the eleventh element 311 is hardly detached from the first left side surface portion 11b. Further, a connection region of the eleventh upper portion 311c with the eleventh side portion 311b pushed into the first inclined region 11k is separated from the first inclined region 11k. That is, the eleventh upper portion 311c becomes in a state in which the eleventh upper portion 311c is substantially parallel to the xy plane.
The twelfth element 312 has a twelfth arm portion 312a, the twelfth side portion 312b, and the twelfth upper portion 312c. The twelfth arm portion 312a constitutes a proximal end region of the twelfth element 312 and has a surface perpendicular to the xy plane. The twelfth arm portion 312a extends from the front side of the right end portion of the first substrate 33 toward the right front direction. The proximal end portion of the twelfth side portion 312b is connected to the distal end portion of the twelfth arm portion 312a and has a surface perpendicular to the y direction. The twelfth side portion 312b extends from the distal end portion of the twelfth arm portion 312a in the x direction and in a direction away from the fourteenth element 314. The proximal end portion of the twelfth upper portion 312c is connected to an upper end portion of the twelfth side portion 312b and has a surface perpendicular to the z direction. The twelfth upper portion 312c extends from the upper end portion of the twelfth side portion 312b in the y direction and in a direction approaching the eleventh element 311. The twelfth element 312 is configured such that a distal end region (region away from the first substrate 33) is wider than a proximal end region (region close to the first substrate 33).
The twelfth side portion 312b is provided with the first claw hole 31b. The twelfth upper portion 312c is provided with the first pin hole 31a.
The twelfth element 312 is attached to the upper surface portion 11a and the first right side surface portion 11c of the first case 11 in the following manner. The eleventh pin 11m corresponding to the twelfth upper portion 312c is fitted into the first pin hole 31a of the twelfth upper portion 312c. A connection region of the twelfth upper portion 312c with the twelfth side portion 312b is pushed upward in the z direction into the first inclined region 11k corresponding to the twelfth upper portion 312c (first pushing process). Therefore, the twelfth upper portion 312c is temporarily in an inclined state not parallel to the xy plane. Further, the twelfth element 312 is bent such that the end portion on the left side in the y direction of the twelfth upper portion 312c and the end portion on the lower side in the z direction of the twelfth side portion 312b approach each other, and an angle formed by the twelfth upper portion 312c and the twelfth side portion 312b when viewed from the x direction becomes smaller than the vertical angle. The first claw 11n of the first right side surface portion 11c corresponding to the twelfth side portion 312b is fitted into the first claw hole 31b of the twelfth side portion 312b (first claw insertion process). Thereafter, by pulling down the twelfth side portion 312b downward in the z direction or the like, the state in which the connection region of the twelfth upper portion 312c with the twelfth side portion 312b is pushed into the first inclined region 11k is released. At this time, the twelfth element 312 tries to return to the original state (state in which the twelfth upper portion 312c and the twelfth side portion 312b are substantially vertical), and the first claw 11n is hooked to the first claw hole 31b (first hooking process). The upper end of the first claw hole 31b of the twelfth side portion 312b and the upper end of the first claw 11n of the first right side surface portion 11c corresponding to the twelfth side portion 312b come into contact with each other. That is, the twelfth element 312 becomes in a state in which the twelfth element 312 is hardly detached from the first right side surface portion 11c. Further, a connection region of the twelfth upper portion 312c with the twelfth side portion 312b pushed into the first inclined region 11k is separated from the first inclined region 11k. That is, the twelfth upper portion 312c becomes in a state in which the twelfth upper portion 312c is substantially parallel to the xy plane.
The eleventh arm portion 311a of the eleventh element 311 and the twelfth arm portion 312a of the twelfth element 312 face each other in the y direction, and are bent such that the proximal end portion approaches and the distal end portion separates. When viewed from the y direction, the eleventh side portion 311b of the eleventh element 311 and the twelfth side portion 312b of the twelfth element 312 are in an overlapping positional relationship.
The thirteenth element 313 has a thirteenth arm portion 313a, the thirteenth side portion 313b, and the thirteenth upper portion 313c. The thirteenth arm portion 313a constitutes a proximal end region of the thirteenth element 313 and has a surface perpendicular to the xy plane. The thirteenth arm portion 313a extends from the rear side of the left end portion of the first substrate 33 toward the left rear direction. The proximal end portion of the thirteenth side portion 313b is connected to the distal end portion of the thirteenth arm portion 313a and has a surface perpendicular to the y direction. The thirteenth side portion 313b extends from the distal end portion of the thirteenth arm portion 313a in the x direction and in a direction away from the eleventh element 311. The proximal end portion of the thirteenth upper portion 313c is connected to an upper end portion of the thirteenth side portion 313b and has a surface perpendicular to the z direction. The thirteenth upper portion 313c extends from the upper end portion of the thirteenth side portion 313b in the y direction and in a direction approaching the fourteenth element 314. The thirteenth element 313 is configured such that a distal end region (region away from the first substrate 33) is wider than a proximal end region (region close to the first substrate 33).
The thirteenth side portion 313b is provided with the first claw hole 31b. The thirteenth upper portion 313c is provided with the first pin hole 31a.
The thirteenth element 313 is attached to the upper surface portion 11a and the first left side surface portion 11b of the first case 11 in the following manner. The first pin 11m corresponding to the thirteenth upper portion 313c is fitted into the first pin hole 31a of the thirteenth upper portion 313c. A connection region of the thirteenth upper portion 313c with the thirteenth side portion 313b is pushed upward in the z direction into the first inclined region 11k corresponding to the thirteenth upper portion 313c (first pushing process). Therefore, the thirteenth upper portion 313c is temporarily in an inclined state not parallel to the xy plane. Further, the thirteenth element 313 is bent such that the end portion on the right side in the y direction of the thirteenth upper portion 313c and the end portion on the lower side in the z direction of the thirteenth side portion 313b approach each other, and an angle formed by the thirteenth upper portion 313c and the thirteenth side portion 313b when viewed from the x direction becomes smaller than the vertical angle. The first claw 11n of the first left side surface portion 11b corresponding to the thirteenth side portion 313b is fitted into the first claw hole 31b of the thirteenth side portion 313b (first claw insertion process). Thereafter, by pulling down the thirteenth side portion 313b downward in the z direction or the like, the state in which the connection region of the thirteenth upper portion 313c with the thirteenth side portion 313b is pushed into the first inclined region 11k is released. At this time, the thirteenth element 313 tries to return to the original state (state in which the thirteenth upper portion 313c and the thirteenth side portion 313b are substantially vertical), and the first claw 11n is hooked to the first claw hole 31b (first hooking process). The upper end of the first claw hole 31b of the thirteenth side portion 313b and the upper end of the first claw 11n of the first left side surface portion 11b corresponding to the thirteenth side portion 313b come into contact with each other. That is, the thirteenth element 313 becomes in a state in which the thirteenth element 313 is hardly detached from the first left side surface portion 11b. Further, a connection region of the thirteenth upper portion 313c with the thirteenth side portion 313b pushed into the first inclined region 11k is separated from the first inclined region 11k. That is, the thirteenth upper portion 313c becomes in a state in which the thirteenth upper portion 313c is substantially parallel to the xy plane.
The fourteenth element 314 has a fourteenth arm portion 314a, the fourteenth side portion 314b, and the fourteenth upper portion 314c. The fourteenth arm portion 314a constitutes a proximal end region of the fourteenth element 314 and has a surface perpendicular to the xy plane. The fourteenth arm portion 314a extends from the rear side of the right end portion of the first substrate 33 toward the right rear direction. The proximal end portion of the fourteenth side portion 314b is connected to the distal end portion of the fourteenth arm portion 314a and has a surface perpendicular to the y direction. The fourteenth side portion 314b extends from the distal end portion of the fourteenth arm portion 314a in the x direction and in a direction away from the twelfth element 312. The proximal end portion of the fourteenth upper portion 314c is connected to an upper end portion of the fourteenth side portion 314b and has a surface perpendicular to the z direction. The fourteenth upper portion 314c extends from the upper end portion of the fourteenth side portion 314b in the y direction and in a direction approaching the thirteenth element 313. The fourteenth element 314 is configured such that a distal end region (region away from the first substrate 33) is wider than a proximal end region (region close to the first substrate 33).
The fourteenth side portion 314b is provided with the first claw hole 31b. The fourteenth upper portion 314c is provided with the first pin hole 31a.
The fourteenth element 314 is attached to the upper surface portion 11a and the first right side surface portion 11c of the first case 11 in the following manner. The first pin 11m corresponding to the fourteenth upper portion 314c is fitted into the first pin hole 31a of the fourteenth upper portion 314c. A connection region of the fourteenth upper portion 314c with the fourteenth side portion 314b is pushed upward in the z direction into the first inclined region 11k corresponding to the fourteenth upper portion 314c (first pushing process, see
The thirteenth arm portion 313a of the thirteenth element 313 and the fourteenth arm portion 314a of the fourteenth element 314 face each other in the y direction, and are bent such that the proximal end portion approaches and the distal end portion separates (see
The second antenna 32 includes the twenty-first element 321, the twenty-second element 322, the twenty-third element 323, and the twenty-fourth element 324 (see
The twenty-first element 321 has the twenty-first arm portion 321a, the twenty-first side portion 321b, and the twenty-first lower portion 321c. The twenty-first arm portion 321a constitutes a proximal end region of the twenty-first element 321 and has a surface perpendicular to the xy plane. The twenty-first arm portion 321a extends from the left side of the front end portion of the second substrate 34 toward the left front direction. The proximal end portion of the twenty-first side portion 321b is connected to the distal end portion of the twenty-first arm portion 321a and has a surface perpendicular to the x direction. The twenty-first side portion 321b extends from the distal end portion of the twenty-first arm portion 321a in the y direction and in a direction away from the twenty-second element 322. The proximal end portion of the twenty-first lower portion 321c is connected to the lower end portion of the twenty-first side portion 321b and has a surface perpendicular to the z direction. The twenty-first lower portion 321c extends from the lower end portion of the twenty-first side portion 321b in the x direction and in a direction approaching the twenty-third element 323. The twenty-first element 321 is configured such that a distal end region (region away from the second substrate 34) is wider than a proximal end region (region close to the second substrate 34).
The twenty-first side portion 321b is provided with the second claw hole 32b. The twenty-first lower portion 321c is provided with the second pin hole 32a.
The twenty-first element 321 is attached to the lower surface portion 12a and the second front surface portion 12d of the second case 12 in the following manner. The second pin 12m corresponding to the twenty-first lower portion 321c is fitted into the second pin hole 32a of the twenty-first lower portion 321c. A connection region of the twenty-first lower portion 321c with the twenty-first side portion 321b is pushed downward in the z direction into the second inclined region 12k corresponding to the twenty-first lower portion 321c. Therefore, the twenty-first lower portion 321c is temporarily in an inclined state not parallel to the xy plane. Further, the twenty-first element 321 is bent such that the end portion on the rear side in the x direction of the twenty-first lower portion 321c and the end portion on the upper side in the z direction of the twenty-first side portion 321b approach each other, and an angle formed by the twenty-first lower portion 321c and the twenty-first side portion 321b when viewed from the y direction becomes smaller than the vertical angle. The second claw 12n of the second front surface portion 12d corresponding to the twenty-first side portion 321b is fitted into the second claw hole 32b of the twenty-first side portion 321b. Thereafter, by pulling up the twenty-first side portion 321b upward in the z direction or the like, the state in which the connection region of the twenty-first lower portion 321c with the twenty-first side portion 321b is pushed into the second inclined region 12k is released. At this time, the twenty-first element 321 tries to return to the original state (state in which the twenty-first lower portion 321c and the twenty-first side portion 321b are substantially vertical), and the second claw 12n is hooked to the second claw hole 32b. The lower end of the second claw hole 32b of the twenty-first side portion 321b and the lower end of the second claw 12n of the second front surface portion 12d corresponding to the twenty-first side portion 321b come into contact with each other. That is, the twenty-first element 321 becomes in a state in which the twenty-first element 321 is hardly detached from the second front surface portion 12d. Further, a connection region of the twenty-first lower portion 321c with the twenty-first side portion 321b pushed into the second inclined region 12k is separated from the second inclined region 12k. That is, the twenty-first lower portion 321c becomes in a state in which the twenty-first lower portion 321c is substantially parallel to the xy plane.
As illustrated in
The twenty-second element 322 has a twenty-second arm portion 322a, the twenty-second side portion 322b, and the twenty-second lower portion 322c (see
The twenty-second side portion 322b is provided with the second claw hole 32b. The twenty-second lower portion 322c is provided with the second pin hole 32a.
The twenty-second element 322 is attached to the lower surface portion 12a and the second front surface portion 12d of the second case 12 in the following manner. The second pin 12m corresponding to the twenty-second lower portion 322c is fitted into the second pin hole 32a of the twenty-second lower portion 322c. A connection region of the twenty-second lower portion 322c with the twenty-second side portion 322b is pushed downward in the z direction into the second inclined region 12k corresponding to the twenty-second lower portion 322c. Therefore, the twenty-second lower portion 322c is temporarily in an inclined state not parallel to the xy plane. Further, the twenty-second element 322 is bent such that the end portion on the rear side in the x direction of the twenty-second lower portion 322c and the end portion on the upper side in the z direction of the twenty-second side portion 322b approach each other, and an angle formed by the twenty-second lower portion 322c and the twenty-second side portion 322b when viewed from the y direction becomes smaller than the vertical angle. The second claw 12n of the second front surface portion 12d corresponding to the twenty-second side portion 322b is fitted into the second claw hole 32b of the twenty-second side portion 322b. Thereafter, by pulling up the twenty-second side portion 322b upward in the z direction or the like, the state in which the connection region of the twenty-second lower portion 322c with the twenty-second side portion 322b is pushed into the second inclined region 12k is released. At this time, the twenty-second element 322 tries to return to the original state (state in which the twenty-second lower portion 322c and the twenty-second side portion 322b are substantially vertical), and the second claw 12n is hooked to the second claw hole 32b. The lower end of the second claw hole 32b of the twenty-second side portion 322b and the lower end of the second claw 12n of the second front surface portion 12d corresponding to the twenty-second side portion 322b come into contact with each other. That is, the twenty-second element 322 becomes in a state in which the twenty-second element 322 is hardly detached from the second front surface portion 12d. Further, a connection region of the twenty-second lower portion 322c with the twenty-second side portion 322b pushed into the second inclined region 12k is separated from the second inclined region 12k. That is, the twenty-second lower portion 322c becomes in a state in which the twenty-second lower portion 322c is substantially parallel to the xy plane.
When viewed from the z direction, the twelfth upper portion 312c of the twelfth element 312 and the twenty-second lower portion 322c of the twenty-second element 322 are in a positional relationship in which at least a part (distal end portion) overlaps (see
The twenty-first arm portion 321a of the twenty-first element 321 and the twenty-second arm portion 322a of the twenty-second element 322 face each other in the y direction, and are bent such that the proximal end portion approaches and the distal end portion separates (see
The twenty-third element 323 has a twenty-third arm portion 323a, the twenty-third side portion 323b, and the twenty-third lower portion 323c. The twenty-third arm portion 323a constitutes a proximal end region of the twenty-third element 323 and has a surface perpendicular to the xy plane. The twenty-third arm portion 323a extends from the left side of the rear end portion of the second substrate 34 toward the left rear direction. The proximal end portion of the twenty-third side portion 323b is connected to the distal end portion of the twenty-third arm portion 323a and has a surface perpendicular to the x direction. The twenty-third side portion 323b extends from the distal end portion of the twenty-third arm portion 323a in the y direction and in a direction away from the twenty-fourth element 324. The proximal end portion of the twenty-third lower portion 323c is connected to the lower end portion of the twenty-third side portion 323b and has a surface perpendicular to the z direction. The twenty-third lower portion 323c extends from the lower end portion of the twenty-third side portion 323b in the x direction and in a direction approaching the twenty-first element 321. The twenty-third element 323 is configured such that a distal end region (region away from the second substrate 34) is wider than a proximal end region (region close to the second substrate 34).
The twenty-third side portion 323b is provided with the second claw hole 32b. The twenty-third lower portion 323c is provided with the second pin hole 32a.
The twenty-third element 323 is attached to the lower surface portion 12a and the second rear surface portion 12e of the second case 12 in the following manner. The second pin 12m corresponding to the twenty-third lower portion 323c is fitted into the second pin hole 32a of the twenty-third lower portion 323c. A connection region of the twenty-third lower portion 323c with the twenty-third side portion 323b is pushed downward in the z direction into the second inclined region 12k corresponding to the twenty-third lower portion 323c. Therefore, the twenty-third lower portion 323c is temporarily in an inclined state not parallel to the xy plane. Further, the twenty-third element 323 is bent such that the end portion on the front side in the x direction of the twenty-third lower portion 323c and the end portion on the upper side in the z direction of the twenty-third side portion 323b approach each other, and an angle formed by the twenty-third lower portion 323c and the twenty-third side portion 323b when viewed from the y direction becomes smaller than the vertical angle. The second claw 12n of the second rear surface portion 12e corresponding to the twenty-third side portion 323b is fitted into the second claw hole 32b of the twenty-third side portion 323b. Thereafter, by pulling up the twenty-third side portion 323b upward in the z direction or the like, the state in which the connection region of the twenty-third lower portion 323c with the twenty-third side portion 323b is pushed into the second inclined region 12k is released. At this time, the twenty-third element 323 tries to return to the original state (state in which the twenty-third lower portion 323c and the twenty-third side portion 323b are substantially vertical), and the second claw 12n is hooked to the second claw hole 32b. The lower end of the second claw hole 32b of the twenty-third side portion 323b and the lower end of the second claw 12n of the second rear surface portion 12e corresponding to the twenty-third side portion 323b come into contact with each other. That is, the twenty-third element 323 becomes in a state in which the twenty-third element 323 is hardly detached from the second rear surface portion 12e. Further, a connection region of the twenty-third lower portion 323c with the twenty-third side portion 323b pushed into the second inclined region 12k is separated from the second inclined region 12k. That is, the twenty-third lower portion 323c becomes in a state in which the twenty-third lower portion 323c is substantially parallel to the xy plane.
When viewed from the z direction, the thirteenth upper portion 313c of the thirteenth element 313 and the twenty-third lower portion 323c of the twenty-third element 323 are in a positional relationship in which at least a part (distal end portion) overlaps (see
When viewed from the x direction, the twenty-first side portion 321b of the twenty-first element 321 and the twenty-third side portion 323b of the twenty-third element 323 are in an overlapping positional relationship (see
The twenty-fourth element 324 has a twenty-fourth arm portion 324a, the twenty-fourth side portion 324b, and the twenty-fourth lower portion 324c. The twenty-fourth arm portion 324a constitutes a proximal end region of the twenty-fourth element 324 and has a surface perpendicular to the xy plane. The twenty-fourth arm portion 324a extends from the right side of the rear end portion of the second substrate 34 toward the right rear direction. The proximal end portion of the twenty-fourth side portion 324b is connected to the distal end portion of the twenty-fourth arm portion 324a and has a surface perpendicular to the x direction. The twenty-fourth side portion 324b extends from the distal end portion of the twenty-fourth arm portion 324a in the y direction and in a direction away from the twenty-third element 323. The proximal end portion of the twenty-fourth lower portion 324c is connected to the lower end portion of the twenty-fourth side portion 324b and has a surface perpendicular to the z direction. The twenty-fourth lower portion 324c extends from the lower end portion of the twenty-fourth side portion 324b in the x direction and in a direction approaching the twenty-second element 322. The twenty-fourth element 324 is configured such that a distal end region (region away from the second substrate 34) is wider than a proximal end region (region close to the second substrate 34).
The twenty-fourth side portion 324b is provided with the second claw hole 32b. The twenty-fourth lower portion 324c is provided with the second pin hole 32a.
The twenty-fourth element 324 is attached to the lower surface portion 12a and the second rear surface portion 12e of the second case 12 in the following manner. The second pin 12m corresponding to the twenty-fourth lower portion 324c is fitted into the second pin hole 32a of the twenty-fourth lower portion 324c. A connection region of the twenty-fourth lower portion 324c with the twenty-fourth side portion 324b is pushed downward in the z direction into the second inclined region 12k corresponding to the twenty-fourth lower portion 324c. Therefore, the twenty-fourth lower portion 324c is temporarily in an inclined state not parallel to the xy plane. Further, the twenty-fourth element 324 is bent such that the end portion on the front side in the x direction of the twenty-fourth lower portion 324c and the end portion on the upper side in the z direction of the twenty-fourth side portion 324b approach each other, and an angle formed by the twenty-fourth lower portion 324c and the twenty-fourth side portion 324b when viewed from the y direction becomes smaller than the vertical angle. The second claw 12n of the second rear surface portion 12e corresponding to the twenty-fourth side portion 324b is fitted into the second claw hole 32b of the twenty-fourth side portion 324b. Thereafter, by pulling up the twenty-fourth side portion 324b upward in the z direction or the like, the state in which the connection region of the twenty-fourth lower portion 324c with the twenty-fourth side portion 324b is pushed into the second inclined region 12k is released. At this time, the twenty-fourth element 324 tries to return to the original state (state in which the twenty-fourth lower portion 324c and the twenty-fourth side portion 324b are substantially vertical), and the second claw 12n is hooked to the second claw hole 32b. The lower end of the second claw hole 32b of the twenty-fourth side portion 324b and the lower end of the second claw 12n of the second rear surface portion 12e corresponding to the twenty-fourth side portion 324b come into contact with each other. That is, the twenty-fourth element 324 becomes in a state in which the twenty-fourth element 324 is hardly detached from the second rear surface portion 12e. Further, a connection region of the twenty-fourth lower portion 324c with the twenty-fourth side portion 324b pushed into the second inclined region 12k is separated from the second inclined region 12k. That is, the twenty-fourth lower portion 324c becomes in a state in which the twenty-fourth lower portion 324c is substantially parallel to the xy plane.
When viewed from the z direction, the fourteenth upper portion 314c of the fourteenth element 314 and the twenty-fourth lower portion 324c of the twenty-fourth element 324 are in a positional relationship in which at least a part (distal end portion) overlaps (see
When viewed from the x direction, the twenty-second side portion 322b of the twenty-second element 322 and the twenty-fourth side portion 324b of the twenty-fourth element 324 are in an overlapping positional relationship (see
The twenty-third arm portion 323a of the twenty-third element 323 and the twenty-fourth arm portion 324a of the twenty-fourth element 324 face each other in the y direction, and are bent such that the proximal end portion approaches and the distal end portion separates.
The first substrate 33 includes a circuit of the first antenna 31 (see
The first substrate 33 has a substantially rectangular outer shape whose length in the y direction is longer than the length in the x direction when viewed from the z direction. The eleventh arm portion 311a of the eleventh element 311 is attached to the front side of the left end portion of the first substrate 33. The twelfth arm portion 312a of the twelfth element 312 is attached to the front side of the right end portion of the first substrate 33. The thirteenth arm portion 313a of the thirteenth element 313 is attached to the rear side of the left end portion of the first substrate 33. The fourteenth arm portion 314a of the fourteenth element 314 is attached to the rear side of the right end portion of the first substrate 33. The tip of the first distal end region 35b of the first cable 35 is attached to the front-rear center and the left-right center of the first substrate 33. The eleventh element 311, the twelfth element 312, the thirteenth element 313, and the fourteenth element 314 are electrically connected to the first cable 35 via the first substrate 33. One of the signal line and the ground line of the first cable 35 is electrically connected to the eleventh element 311 and the twelfth element 312 via the first substrate 33. The other of the signal line and the ground line of the first cable 35 is electrically connected to the thirteenth element 313 and the fourteenth element 314 via the first substrate 33.
The second substrate 34 includes a circuit of the second antenna 32. The second substrate 34 has a substantially rectangular outer shape whose length in the x direction is longer than the length in the y direction when viewed from the z direction. The twenty-first arm portion 321a of the twenty-first element 321 is attached to the left side of the front end portion of the second substrate 34. The twenty-second arm portion 322a of the twenty-second element 322 is attached to the right side of the front end portion of the second substrate 34. The twenty-third arm portion 323a of the twenty-third element 323 is attached to the left side of the rear end portion of the second substrate 34. The twenty-fourth arm portion 324a of the twenty-fourth element 324 is attached to the right side of the rear end portion of the second substrate 34. The tip of the second distal end region 36b of the second cable 36 is attached to the front-rear center and the left-right center of the second substrate 34. The twenty-first element 321, the twenty-second element 322, the twenty-third element 323, and the twenty-fourth element 324 are electrically connected to the second cable 36 via the second substrate 24. One of the signal line and the ground line of the second cable 36 is electrically connected to the twenty-first element 321 and the twenty-third element 323 via the second substrate 34. The other of the signal line and the ground line of the second cable 36 is electrically connected to the twenty-second element 322 and the twenty-fourth element 324 via the second substrate 34.
The first substrate 33 is located above the second substrate 34 in the z direction. When viewed from the z direction, the front-rear center and the left-right center of the first substrate 33 is in a positional relationship of substantially overlapping the front-rear center and the left-right center of the second substrate 34. When viewed from the z direction, the first substrate 33 and the second substrate 34 have a substantially cross-shaped outer shape.
The first cable 35 is a cable for the first antenna 31. The first cable 35 includes the first body portion 35a, the first distal end region 35b, and a first ferrite core 35c (see
The eleventh arm portion 311a, the twelfth arm portion 312a, the thirteenth arm portion 313a, and the fourteenth arm portion 314a of the first antenna 31, and the first distal end region 35b of the first cable 35 are located above the first substrate 33 in the z direction. However, the fold pieces of the eleventh arm portion 311a, the twelfth arm portion 312a, the thirteenth arm portion 313a, and the fourteenth arm portion 314a to be attached to the first substrate 33 are located below the first substrate 33 in the z direction.
The second cable 36 is a cable for the second antenna 32. The second cable 36 includes the second body portion 36a, the second distal end region 36b, and the second ferrite core 36c (see
The twenty-first arm portion 321a, the twenty-second arm portion 322a, the twenty-third arm portion 323a, the twenty-fourth arm portion 324a of the second antenna 32, and the second distal end region 36b of the second cable 36 are located below the second substrate 34 in the z direction. However, the fold pieces of the twenty-first arm portion 321a, the twenty-second arm portion 322a, the twenty-third arm portion 323a, and the twenty-fourth arm portion 324a to be attached to the second substrate 34 are located above the second substrate 34 in the z direction.
A member (part of the first body portion 35a, the first distal end region 35b, and the first ferrite core 35c) disposed inside the housing 10 of the first cable 35 is disposed inside a region surrounded by the eleventh element 311 of the first antenna 31 and the twenty-first element 321 of the second antenna 32 and along a side close to the first antenna 31 when viewed from the z direction (see
(Effect of Two Cables being Held Adjacent to Each Other in Housing 10)
In a case where two cables (first cable 35 and second cable 36) are held in the housing 10 in a separated state and said two cables are bundled at a position away from the housing 10, there is a possibility that the electrical performance of the vehicular antenna device 1 varies depending on the location and the way of bundling. In the present embodiment, two cables are held in a predetermined region (a region near the left end portion) of one surface (first front surface portion 11d, second front surface portion 12d) of the housing 10. Therefore, said two cables are bundled on one surface of the housing 10. Therefore, the electrical performance of the vehicular antenna device 1 can be kept constant as compared with a form in which two cables are held in a separated state in the housing 10 and said two cables are bundled at a position separated from the housing 10.
(Effect of First Cable 35 and Second Cable 36 being Attached to Separate Cases)
The first antenna 31 is held by the first case 11, and the first body portion 35a of the first cable 35 is clamped by the first cable holding portion 11i of the first case 11. The second antenna 32 is held by the second case 12, and the second body portion 36a of the second cable 36 is clamped by the second cable holding portion 12i of the second case 12. Therefore, the vehicular antenna device 1 can be easily assembled only by overlapping the first case 11 to which the first antenna 31, the first cable 35, and the like are attached and the second case 12 to which the second antenna 32, the second cable 36, and the like are attached.
By the first cable holding portion 11i, the second cable holding portion 12i, and the like, two cables (first cable 35 and second cable 36) are configured to extend from the housing 10 to the outside at substantially the same height. Therefore, as compared with a form in which the two cables extend from the housing 10 to the outside at different height positions, wiring of said two cables is easily performed outside the housing 10.
A cable is disposed in a region surrounded by one element (eleventh element 311) constituting the first antenna 31 and one element (twenty-first element 321) constituting the second antenna 32 and at a position close to the electrically connected element. Specifically, the first cable 35 is disposed at a position close to the eleventh element 311, and the second cable 36 is disposed at a position close to the twenty-first element 321. Therefore, the cable is less likely to function as a scatterer as compared with a form in which the cable is disposed at a position away from the electrically connected element. Therefore, the electrical influence of said cable on the antenna can be reduced.
When the first case 11 and the second case 12 are overlapped with each other, the first attachment guide portion 11g and the second attachment guide portion 12g are first fitted to each other, and then contact between bosses 11f and the screw holes 12f, contact between the first left side surface portion 11b and the second left side surface portion 12b, and the like are performed. Therefore, since the first case 11 and the second case 12 can be aligned by fitting the first attachment guide portion 11g and the second attachment guide portion 12g, alignment of the bosses 11f and the screw holes 12f, alignment of the first left side surface portion 11b and the second left side surface portion 12b, and the like can be accurately performed. Therefore, when the first case 11 and the second case 12 overlap each other, it is possible to prevent an element constituting the first antenna 31 or an element constituting the second antenna 32 from erroneously coming into contact with another member.
When the element of the antenna is attached to the case, it is possible to easily perform hooking between the protrusion of the case and the hole of said element while pushing a part of said element into the inclined region and releasing the pushed state. For example, when the eleventh element 311 of the first antenna 31 is attached to the first case 11, it is possible to easily perform hooking between the first claw 11n of the first case 11 and the first claw hole 31b of the eleventh side portion 311b while pushing a part of the eleventh element 311 (connection region between the eleventh side portion 311b and the eleventh upper portion 311c) into the first inclined region 11k and releasing the pushed state. Further, when the twenty-first element 321 of the second antenna 32 is attached to the second case 12, it is possible to easily perform hooking between the second claw 12n of the second case 12 and the second claw hole 32b of the twenty-first side portion 321b while pushing a part of the twenty-first element 321 (connection region between the twenty-first side portion 321b and the twenty-first lower portion 321c) into the second inclined region 12k and releasing the pushed state. Therefore, the element of the antenna can be fixed to the case without using the screws, and the influence on the electric performance by using the screws can be minimized.
(Effect that First Claw 11n is Located Closer to End Portions on the Lower Side in z Direction of First Left Side Surface Portion 11b and First Right Side Surface Portion 11c)
As compared with the form in which the first claw 11n is located away from the end portion on the lower side in the z direction, the first claw 11n can be hooked at a position close to the end portion on the lower side in the z direction of the side portion (eleventh side portion 311b to fourteenth side portion 314b) of the first antenna 31, that is, at a position away from the connection region between the side portion and the upper portion (eleventh upper portion 311c to fourteenth upper portion 314c) of the first antenna 31. Therefore, the first antenna 31 can be hooked to the first claw 11n with little deflection (deformation) of the side portion of the first antenna 31, and the assemblability is improved.
(Effect that Second Claw 12n is Located Closer to End Portions on Upper Side in z Direction of Second Front Surface Portion 12d and Second Rear Surface Portion 12e)
As compared with the form in which the second claw 12n is located away from the end portion on the upper side in the z direction, the second claw 12n can be hooked at a position close to the end portion on the upper side in the z direction of the side portion (twenty-first side portion 321b to twenty-fourth side portion 324b) of the second antenna 32, that is, at a position away from the connection region between the side portion and the lower portion (twenty-first lower portion 321c to twenty-fourth lower portion 324c) of the second antenna 32. Therefore, the second antenna 32 can be hooked to the second claw 12n with little deflection (deformation) of the side portion of the second antenna 32, and assemblability is improved.
The first distal end region 35b of the first cable 35 is held by the first cable guide portion 11h in a bent state. The second distal end region 36b of the second cable 36 is held by the second cable guide portion 12h in a bent state. Therefore, even if a tensile force is applied to the cable from the outside of the housing 10, said tensile force is less likely to directly reach the substrate, and breakage of said substrate is easily prevented.
When the first case 11 and the second case 12 are attached, an attachment error in the x direction and the y direction hardly occurs. In addition, the second attachment guide portion 12g can protrude largely upward in the z direction as compared with the second left side surface portion 12b and the second right side surface portion 12c. Therefore, when the first case 11 and the second case 12 are attached, the first attachment guide portion 11g can be easily brought close to the second attachment guide portion 12g.
The two antennas (first antenna 31, second antenna 32) included in the antenna unit 30 are not limited to those illustrated in the present embodiment, and can be applied to other shapes.
Although some embodiments of the present invention have been described, these embodiments have been presented as examples, and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention and are included in the invention described in the claims and the equivalent scope thereof.
According to the present specification, the following aspects are provided.
A vehicular antenna device includes: a first antenna; a second antenna; a first cable for the first antenna; a second cable for the second antenna; and a housing that holds the first antenna and the second antenna. The first cable and the second cable are held in a predetermined region of one surface of the housing.
According to the first aspect, two cables are held in a predetermined region of one surface of the housing. Therefore, said two cables are bundled on one surface of the housing. Therefore, the electrical performance of the vehicular antenna device can be kept constant as compared with a form in which two cables are held in a separated state in the housing and said two cables are bundled at a position separated from the housing.
Preferably, the housing includes a first case that holds the first antenna and a second case that holds the second antenna. When the first case and the second case are overlapped with each other, the first cable and the second cable are arranged side by side in a second direction perpendicular to a first direction in which the first case and the second case are arranged side by side.
According to the second aspect, the vehicular antenna device can be easily assembled only by overlapping the first case that holds the first antenna and the second case that holds the second antenna. In addition, the two cables (first cable and second cable) are configured to extend from the housing to the outside side by side. Therefore, as compared with a form in which the two cables are configured to extend from the housing to the outside without being arranged side by side, wiring of said two cables is easily performed outside the housing.
More preferably, the first cable is disposed along a side close to the first antenna in a region surrounded by at least a part of the first antenna and at least a part of the second antenna inside the first case. The second cable is disposed along a side close to the second antenna in a region surrounded by at least a part of the first antenna and at least a part of the second antenna inside the second case.
According to the third aspect, the cable is less likely to function as a scatterer as compared with a form in which the cable is disposed at a position away from the antenna. Therefore, the electrical influence of said cable on the antenna can be reduced.
Preferably, the first case has a first wall surface. The second case has a second wall surface. The first case includes a first attachment guide portion. The second case includes a second attachment guide portion fitted to the first attachment guide portion. The first attachment guide portion protrudes in the first direction compared to the first wall surface close to the first attachment guide portion. The second attachment guide portion protrudes in the first direction compared to the second wall surface close to the second attachment guide portion.
According to the fourth aspect, when the first case and the second case are overlapped with each other, the first attachment guide portion and the second attachment guide portion are first fitted. Therefore, the first case and the second case can be aligned by fitting the first attachment guide portion and the second attachment guide portion. Therefore, when the first case and the second case are overlapped with each other, it is possible to prevent the first antenna or the second antenna from erroneously coming into contact with another member.
Preferably, at least one of the first case and the second case has an inclined region and a claw for hooking at least one of the first antenna and the second antenna. A recess of the inclined region increases toward the claw.
According to the fifth aspect, when the antenna is attached to the case, it is possible to perform hooking between the claw of the case and said element while pushing a part of said antenna into the inclined region and releasing the pushed state. Therefore, the antenna can be fixed to the case without using the screws, and the influence on the electric performance by using the screws can be minimized.
More preferably, the claw is located in a region close to an end portion in the first direction of at least one wall surface of the first case and the second case.
According to the sixth aspect, the antenna can be hooked to the claw with little deflection (deformation) of the side portion of the antenna, and the assemblability is improved.
Preferably, the first case includes a first cable guide portion that holds the first cable in a bent state. The second case includes a second cable guide portion that holds the second cable in a bent state.
According to the seventh aspect, even if a tensile force is applied to the cable from the outside of the housing, said tensile force is less likely to reach the member (substrate) at the tip of the cable, and breakage of said member is easily prevented.
Preferably, the first case has an upper surface portion perpendicular to the first direction and a first wall surface perpendicular to the upper surface portion. The second case has a lower surface portion perpendicular to the first direction and a second wall surface perpendicular to the lower surface portion. The first antenna includes a first side portion attached to the first wall surface and an upper portion attached to the upper surface portion. The second antenna includes a second side portion attached to the second wall surface and a lower portion attached to the lower surface portion. The upper surface portion includes a first inclined region. The lower surface portion includes a second inclined region. The first wall surface includes a first claw for hooking the first side portion. The second wall surface includes a second claw for hooking the second side portion. In the first inclined region, a recess of the upper surface portion in the first direction increases toward the first claw. In the second inclined region, a recess of the lower surface portion in the first direction increases toward the second claw.
According to the eighth aspect, when the antenna is attached to the case, it is possible to perform hooking between the claw of the case and said element while pushing a part of said antenna into the inclined region and releasing the pushed state. Therefore, the antenna can be fixed to the case without using the screws, and the influence on the electric performance by using the screws can be minimized.
More preferably, the first claw is located in a region closer to an end portion of the first wall surface in the first direction than the upper surface portion. The second claw is located in a region closer to an end portion of the second wall surface in the first direction than the lower surface portion.
According to the ninth aspect, the first claw can be hooked at a position away from a connection region between the first side portion and the upper portion of the first antenna. Therefore, the first antenna can be hooked to the first claw with little deflection (deformation) of the first side portion of the first antenna, and assemblability is improved. The second claw can be hooked at a position away from a connection region between the second side portion and the lower portion of the second antenna. Therefore, the second antenna can be hooked to the second claw with little deflection (deformation) of the second side portion of the second antenna, and the assemblability is improved.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2021-162413 | Sep 2021 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2022/032497 | 8/30/2022 | WO |
