JP4713213B2 - Mounting structure for vehicle electronics - Google Patents

Description

  The present invention relates to a structure for mounting a vehicle electronic device to a conductive mounting portion provided on a vehicle body.

Conventionally, as shown in FIG. 11, a vehicle electronic device 3 such as a car navigation system and a car audio device is placed in a recess 2 provided in an instrument panel (not shown) in a vehicle interior along the vehicle width direction. A technique for arranging in parallel is known.

The housing 4 of each vehicle electronic device 3 is provided with an attachment member 5 that also serves as a ground terminal for the circuit. Each attachment member 5 is made conductive to each of a pair of attachment portions 6 having conductivity provided in the steering member 1 disposed so as to extend in the vehicle width direction in the instrument panel without overlapping each other. It is tightened with a screw member 9 having it. The surface of each mounting member 5 is provided with a plating layer 7 for preventing rusting, and when each screw member 9 is tightened, there is a gap between the seating surface of the head 9 a of each screw member and each mounting member 5. Since the plating layer 7 of each mounting member 5 is partially peeled off due to the friction generated in the above, each screw member 9 and each mounting member 5 are in electrical contact. Thereby, each vehicle electronic device 3 is grounded to each attachment portion 6 via the attachment member 5 and each screw member 9. In addition, in order to make each screw member 9 and each attachment member 5 come into electrical contact more reliably, the screw member 9 is bitten into the plating layer 7 of each attachment member 5 when the screw member 9 is tightened. It is conceivable to use a toothed washer (not shown). Such a toothed washer is disclosed in Patent Document 1, for example.

However, in this attachment structure, each attachment member 5 of each vehicle electronic device 3 is attached to each corresponding attachment portion 6 without overlapping each other, so that a space in the instrument panel is provided for each vehicle electronic device 3. Will be relatively widely occupied. For this reason, the space in the instrument panel cannot be used effectively for other purposes.

Therefore, instead of the above-described mounting structure, as shown in FIG. 12, the mounting members 5 mounted on the housings 4 are overlapped with each other at a predetermined mounting position on the single mounting portion 6, and the mounting portion 6 is formed. Tightening with the screw member 9 is conceivable. According to this attachment structure, compared with the case where each attachment member 5 is attached to each corresponding attachment part 6, the space required for arrangement | positioning of each vehicle electronic device 3 can be narrowed. Thereby, the space in an instrument panel can be used effectively for another purpose. Moreover, since the number of parts, such as the attaching part 6, the screw member 9, and the said washer, is reduced, the increase in manufacturing cost can be suppressed.

  Further, according to this mounting structure, as shown in FIG. 13, when the screw member 9 is tightened, the plating layer 7 on the surface of one mounting member 5 with which the head 9a of the screw member 9 abuts is the same as described above. Can be peeled off. Thereby, since one attachment member 5 and the screw member 9 are in electrical contact, the vehicle electronic device 3 to which the one attachment member 5 is attached is attached to the attachment portion 6 via the one attachment member and the screw member 9. Can be grounded.

For mounting each mounting member 5 to each housing 4, a positioning hole 4 a for defining the mounting position of each mounting member 5 to each housing is formed in each housing 4 as shown in FIG. 14. Has been. Further, as shown in FIG. 15, each attachment member 5 is formed with a cylindrical engagement portion 8 that engages with the positioning hole 4 a of each housing 4.
No. 6-24101 (2nd page, Fig. 1)

However, each mounting member 5 is fixed to the housing 4 of each vehicle electronic device 3 and overlaps with each other at a predetermined mounting position. Therefore, when the screw member 9 is tightened, the mounting member 5 is interposed between the mounting members 5 . There is no friction that peels off the plating layer 7 applied to the opposing surfaces of the mounting members 5 . Therefore, in the mounted state of the vehicular electronic device 3 of the mounting portion 6, the plating layer 7 remaining between the two attachment members 5, thereby and one of the mounting member 5 and the other mounting member 5 into electrical contact with each other I can't. For this reason, the electrical resistance between the two attachment members 5 cannot be reduced, and the vehicle electronic device 3 to which the other attachment member 5 is attached is connected to the attachment portion 6 via the other attachment member 5 and the screw member 9. There was a problem that it could not be reliably grounded.

Further, when attaching each mounting member 5 to each housing 4 , in order to easily engage the engaging portion 8 of each mounting member 5 with the positioning hole 4a of each housing 4 , the diameter of the positioning hole 4a is changed to the engaging portion. It is necessary to set the diameter larger than 8 . For this reason, rattling occurs in the mounting member 5 in a state where the engaging portion 8 is engaged with the positioning hole 4a . When the mounting member 5 is rattled, it becomes difficult to make the axis of the engaging portion 8 coincide with the center of the positioning hole 4a , and the mounting member 5 cannot be mounted at a predetermined mounting position. For this reason, each vehicle electronic device 3 cannot be attached to the attachment portion 6 in a predetermined attachment posture.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting structure for a vehicular electronic device that can reliably ground the vehicular electronic device without lowering space efficiency and increasing manufacturing costs.

  Another object of the present invention is to provide a mounting structure for a vehicular electronic device in which a mounting member can be easily mounted at a predetermined mounting position of a housing.

  In order to solve the above-mentioned problem, the invention according to claim 1 is an attachment structure for attaching at least two vehicle electronic devices to a conductive attachment portion provided on a vehicle body, wherein each of the vehicle electronics The device is provided on the housing, protruding to the outside of the housing so as to overlap each other on the mounting portion, and mounted on the housing, and functions as a ground terminal of a circuit inside each of the vehicle electronic devices. Each of the mounting members includes a screw member that passes through the mounting members that overlap each other to attach the vehicle electronic devices to the mounting portion, and tightens the mounting members to the mounting portion. In any one of the above, a claw for reducing an electrical resistance between the two mounting members by a tightening force by tightening the screw member is formed.

  According to a second aspect of the present invention, in the first aspect of the present invention, a surface of each mounting member is provided with a plating layer for preventing rust, and the claw is fastened to the screw member. The plating layer of the other mounting member is partially broken by force and directly contacts the other mounting member.

  According to a third aspect of the present invention, in the first aspect of the present invention, each housing is formed with a positioning hole for defining a mounting position of each mounting member to each housing. Each mounting member has a base portion attached to the housing and a rising portion rising from the base portion, and each rising portion is formed with an insertion hole that allows the screw member to be inserted, The claw is formed on the rising portion of one mounting member, and each base is formed with an arc-shaped convex portion that engages with each positioning hole when the mounting member is mounted on the housing. The diameter of each arcuate convex portion on each base portion is larger than the diameter of the positioning hole.

According to a fourth aspect of the present invention, each housing is formed with a positioning hole for defining a mounting position of each mounting member to each housing, and each mounting member is formed in the housing. Each of the rising portions has a base portion to be attached and a rising portion that rises from the base portion, and each of the rising portions is formed with an insertion hole that allows the screw member to pass therethrough. The claw is formed, and each base portion protrudes from the base portion toward the housing and is fitted into each positioning hole when the mounting member is attached to the housing. parts are formed respectively, fitting part is made cone-shaped body width direction from its base end to the tip is reduced gradually, the width at the said on each base, than the diameter of the positioning hole And wherein the large.

  The invention according to claim 5 is the invention according to claim 4, wherein the width dimension of the fitting portion on the base portion is the fitting state of the fitting portion to the positioning hole, and The housing side surface is set so as to abut against the housing, and each base portion is formed with a groove continuous with the base end of the fitting portion so as to surround the fitting portion. To do.

  According to the configuration of claim 1, a claw for reducing the electrical resistance between the two mounting members is formed on either one of the two mounting members by a tightening force by tightening the screw member. Even if the surface of each mounting member is provided with a plating layer for preventing rust as in the prior art, both mounting members can be brought into electrical contact without being obstructed by the plating layer. In addition, among the two mounting members that overlap each other, the mounting member that causes friction between the screw member and the screw member when the screw member is tightened, even if a plating layer is applied to the surface thereof, Since the plating layer is partially peeled off by friction with the screw member, it is in electrical contact with the screw member as in the conventional case. Thereby, each electronic device for vehicles can be reliably grounded to an attachment part via each attachment member and a screw member, respectively.

  Furthermore, since each mounting member provided in each housing of each vehicle electronic device overlaps each other and is fastened to the mounting portion, compared to the conventional case where each mounting member is mounted on the corresponding mounting portion. Thus, the space required for the arrangement of the vehicle electronic devices can be reduced, and the number of parts such as the mounting portion and the screw member can be reduced, so that an increase in manufacturing cost can be suppressed.

  Therefore, the electronic devices for both vehicles can be reliably grounded without causing a reduction in space efficiency and an increase in manufacturing cost.

  According to the configuration of the second aspect, the claw can be formed so that the plating layer of the other mounting member is partially broken by the tightening force of the screw member and is directly in contact with the other mounting member. Thereby, the electrical conductivity between both attachment members can be improved more reliably.

  According to the configuration of the third aspect, since the diameter of each arc-shaped convex portion formed at each base portion of each mounting member is larger than the diameter of the positioning hole, each mounting member is connected to each vehicle electronic device. When attaching to each housing of the device, the arc-shaped convex part abuts on the edge of the positioning hole so as to block the positioning hole, so that the mounting member has a conventional shape in the engaged state of the arc-shaped convex part to the positioning hole. It is prevented that sticking occurs. Thereby, the attachment member can be stably aligned with a predetermined attachment position where the center of the arc-shaped convex portion and the center of the positioning hole coincide. Therefore, since the attachment member can be attached at a predetermined attachment position, the vehicle electronic device can be attached to the attachment portion in a predetermined attachment posture.

According to the invention of claim 4, cones formed on the base of each mounting member, the fitting portion to be fitted into the respective positioning holes, the width direction from its base end to the tip is reduced gradually Since the width dimension on each base portion is larger than the diameter of the positioning hole, each fitting portion is attached when attaching each attachment member to each housing of each vehicle electronic device. When inserted into each positioning hole, each fitting portion comes into contact with the edge of each positioning hole so as to block each positioning hole. As a result, it is possible to prevent the mounting member from rattling as in the past in the fitted state of the fitting portion to the positioning hole.

  Further, since the fitting portion is formed of a cone-shaped body, when the fitting portion is pushed into the positioning hole in a state where the fitting portion is in contact with the edge portion of the positioning hole, the positioning hole is moved from the fitting portion to the positioning hole. Most of the force acting on the edge portion of the contact hole acts on the edge portion of the positioning hole from the fitting portion as a force for expanding the positioning hole. Thereby, in the state where the fitting portion is pushed into the positioning hole, most of the reaction force acting on the fitting portion from the edge of the positioning hole acts as a tightening force for tightening the fitting portion from its periphery. The fitting part is difficult to come out of the positioning hole. Therefore, when the housing is inclined, for example, with the fitting portion fitted in the positioning hole, the attachment member is prevented from falling off the housing, so that the attachment work of the attachment member to the housing is made easier. It can be carried out.

  According to the invention described in claim 5, the size of the width dimension on the base portion of the fitting portion is such that the surface of the base portion on the housing side comes into contact with the housing when the fitting portion is fitted to the positioning hole. Therefore, compared to the case where a gap is formed between the housing side surface of the base and the housing in the fitted state of the fitting portion to the positioning hole, the mounting member is attached to the housing. The posture can be stabilized more reliably. In addition, since each base portion is formed with a groove connected to the base end of the fitting portion so as to surround the fitting portion, even when the rising portion from the base portion of the fitting portion spreads toward the base portion. Even if it exists, it can prevent reliably that a clearance gap is formed between a housing and a base by this rising part. Thereby, the attachment attitude | position of the attachment member to a housing can be stabilized still more reliably.

  The present invention will be described with reference to the illustrated embodiments.

In this embodiment, as shown in FIG. 1, the present invention is applied to a mounting structure 13 for mounting two vehicular electronic devices 12a and 12b to a mounting portion 11 provided in an instrument panel ( not shown) in a vehicle interior. An example is shown.

The vehicle electronic devices 12a and 12b are arranged in parallel in the vehicle width direction in a recess 10a provided in the instrument panel . In the illustrated example, a car navigation system is used for the first vehicle electronic device 12a disposed on the left side as viewed in FIG. 1, and the second vehicle electronic device 12a disposed on the right side as viewed in FIG. A DVD playback device for a car navigation system is used for the vehicle electronic device 12b.

The mounting portion 11 is made of a conductive plate-like member, and is disposed between the two vehicle electronic devices 12a and 12b on the steering member 10 disposed in the instrument panel so as to extend along the vehicle width direction and on both sides thereof. Are attached to each. In the illustrated example, one end of each attachment portion 11 is attached to the steering member 10 , and a base portion 14 extending rearward in the vehicle front-rear direction is provided at a distance from each other in the vehicle front-rear direction. And a pair of attachment portions 15 extending to the respective sides. Each mounting portion 15 is formed with a screwing hole 15a that allows screwing of a screw member 24 described later.

  The first and second vehicle electronic devices 12a and 12b each include a housing 16 and mounting members 17a, 17b, 17a ′, and 17b ′ for mounting the vehicle electronic devices 12a and 12b to the mounting portion 11, respectively. . In the illustrated example, the attachment members 17a and 17b are attached to the opposite side walls 16a of the housings 16, respectively. The attachment members 17a 'and 17b' are opposite to the side walls 16a of the housings 16, respectively. Each is attached to the side wall 16b.

  As shown in FIG. 2, a plurality of positioning holes 18 for defining the mounting positions of the mounting members 17a, 17b, 17a ′, 17b ′ are spaced apart from each other on the side walls 16a, 16b of the housings 16, respectively. (Only the positioning hole 18 formed in one housing 16 is shown). In the illustrated example, each positioning hole 18 has a concave shape having a closed end 18a without passing through each side wall 16a of each housing 16 (see FIG. 4).

  Each mounting member 17a, 17b, 17a ', 17b' has conductivity, and as shown in FIG. 3, a plate-like base 19 extending in the front-rear direction of the vehicle along the side wall 16a of the housing 16, and the base Are provided with a pair of plate-like rising portions 20 that rise in a direction away from the housing 16 so as to correspond to the mounting portions 15 of the mounting portion 11 (only the mounting member 17b is shown). . A plating layer 21 for preventing rust is provided on the surface of each base portion 19 and each rising portion 20.

  In each base 19, in the example shown in FIG. 4, a plurality of engaging portions 22 that are engaged with the positioning holes 18 formed in the side walls 16 a of the housings 16 are formed corresponding to the positioning holes 18. ing. As shown in FIG. 4, each engaging portion 22 protrudes from each base portion 19 toward each housing 16 and has an arcuate vertical cross section. Each arcuate protrusion 22 is formed such that its diameter on the base 19 is larger than the diameter of the positioning hole 18 and its projecting dimension is smaller than the depth dimension of each positioning hole 18. Further, as shown in FIG. 2, each base portion 19 is formed with an insertion hole 19 a that allows insertion of a screw member 23 for attaching each attachment member 17 a, 17 b, 17 a ′, 17 b ′ to each housing 16. Yes. Each mounting member 17a, 17b, 17a ', 17b' is screwed to each side wall 16a of each housing 16 by a screw member 23 at each base portion 19 thereof. With the attachment to each housing 16, each attachment member 17a, 17b is connected to a ground terminal of a circuit (not shown) provided in each of the vehicle electronic devices 12a, 12b, and functions as a ground terminal. The mounting members 17a ′ and 17b ′ do not have the grounding function of the vehicle electronic devices 12a and 12b, but the mounting members 17a ′ and 17b ′ have the grounding function of the vehicle electronic devices 12a and 12b. be able to.

  As shown in FIGS. 1 and 3, each rising portion 20 has an insertion hole 20 a that allows insertion of the screw member 24 for fixing the attachment members 17 a, 17 b, 17 a ′, and 17 b ′ to the attachment portion 11. Are formed respectively. The screw member 24 has conductivity, and includes a seat portion 24 a and a screw portion 24 b that can be screwed into the screw hole 15 a of each attachment portion 15 of the attachment portion 11.

Each vehicle electronic device 12a, 12b is attached so that each attachment member 17a, 17b attached to each side wall 16a of each housing 16 overlaps with the attachment portion 11 disposed between both vehicle electronic devices 12a, 12b. The mounting members 17a 'and 17b' attached to the side walls 16b of the respective housings 16 are fastened to the mounting portions 11 disposed on both sides of the two vehicle electronic devices 12a and 12b. It is fixed to the steering member 10 by being tightened by the screw members 24.

Each rising portion 20 of the first mounting member 17a attached to the side wall 16a of the housing 16 of the first vehicle electronic device 12a and the second side attached to the side wall 16a of the housing 16 of the second vehicle electronic device 12b. As shown in FIG. 1, each mounting member 17b has a length that can be overlapped with each other in a state where the vehicle electronic devices 12a and 12b are disposed in the recess 10a of the instrument panel. Have

  In the mounting structure 13 for the vehicle electronic devices 12a and 12b according to the present invention, as shown in FIG. 5, three fan shapes are formed on the edge of the insertion hole 20a formed in each rising portion 20 of the first mounting member 17a. The notches 25 are formed at equal intervals in the circumferential direction of the insertion hole 20a and so as to expand toward the radial direction of the insertion hole 20a. In each notch 25, there is a claw 26 that extends from the edge 25a of each notch in the circumferential direction of the insertion hole 20a and inclines toward the front in the vehicle front-rear direction (back side as viewed in FIG. 5). Each is formed.

When attaching each vehicle electronic device 12a, 12b to the attachment part 11 located between each said vehicle electronic device, each vehicle electronic device 12a, 12b is first attached in the recess 10a of an instrument panel. It arrange | positions so that each rising part 20 of the 2nd attachment member 17b may be pinched | interposed between each rising part 20 and each attachment part 15 of the member 17a. In a state where the rising portions 20 of the mounting members 17a and 17b overlap each other, as shown in FIG. 6, the tips 26a of the claws 26 abut on the surfaces of the rising portions 20 of the second mounting member 17b. In this state, the screw portions 24b of the screw members 24 are respectively inserted into the insertion portions 15 through the insertion holes 20a formed in the rising portions 20, and the screw portions 24b of the screw members 24 are screwed into the attachment portions 15. Screwed into the hole 15a. Thereafter, by tightening the screw member 24, the vehicle electronic devices 12a and 12b are attached to the attachment portion 11 via the attachment members 17a and 17b and the screw member 24, respectively. Moreover, attachment of each attachment member 17a 'and 17b' to each attachment part 11 located in the both sides of each vehicle electronic device 12a and 12b is performed similarly.

  When the screw member 24 is tightened when the screw member 24 is tightened, the plating layer 21 on the surface of the rising portion is caused by friction generated between the seat portion 24a of the screw member 24 and the rising portion 20 of the first mounting member 17a. It is peeled off. Thereby, as shown in FIG. 7, the 1st attachment member 17a and the screw member 24 electrically contact. Further, when the screw member 24 is tightened, the claws 26 are caused by the pressing force that acts on the rising portions 20 of the second mounting member 17b from the rising portions 20 of the first mounting member 17a by tightening the screw members. It rotates about the base end 26b in the direction of the arrow shown in FIG. At this time, the tip 26a of each claw 26 rubs on the surface of each rising portion 20 of the second mounting member 17b, so that the plating layer 21 of the second mounting member 17b is partially peeled off. For this reason, each nail | claw 26 is in the attachment state of each vehicle electronic device 12a, 12b to the attachment part 11, and contacts each rising part 20 of the 2nd attachment member 17b, without passing through the plating layer 21. FIG. Thereby, since the 1st attachment member 17a electrically contacts the 2nd attachment member 17b via each nail | claw 26, the electrical resistance between both the attachment members 17a and 17b is reduced. As described above, since the screw member 24 and the attachment portion 11 have electrical conductivity as described above, electrical contact is maintained between the screw member 24 and the attachment portion 11 as shown in FIG. The first and second mounting members 17a and 17b and the screw member 24 form a ground electric circuit to the mounting portion 11 of each vehicle electronic device 12a and 12b.

  According to the present embodiment, as described above, the first mounting member 17a is formed with the claw 26 for reducing the electrical resistance between the mounting members 17a and 17b by the tightening force by tightening the screw member 24. Therefore, both the attachment members 17a and 17b can be brought into electrical contact without being obstructed by the plating layer 21 provided on the surfaces of the attachment members 17a and 17b. In addition, the first mounting member 17a partially peels the plating layer 21 applied to the surface due to friction generated between the screw member 24 and the screw member when the screw member 24 is tightened. It is in electrical contact with the screw member 24 as in the prior art. Thereby, each electronic device 12a, 12b for vehicles can be reliably earth | grounded to the attaching part 11 via each attaching member 17a, 17b and the screw member 24, respectively.

  Further, as described above, since the attachment members 17a and 17b attached to the housings 16 of the vehicle electronic devices 12a and 12b are fastened to the attachment portion 11 so as to overlap each other, Compared to the case where the vehicle electronic devices 12a and 12b are attached to each of the attachment portions 11, the space required for the arrangement of the vehicle electronic devices 12a and 12b can be reduced, and the attachment portion 11 and the screw member Since the number of parts such as 24 and washers is reduced, an increase in manufacturing cost can be suppressed.

  Therefore, both the vehicle electronic devices 12a and 12b can be reliably grounded to the mounting portion 11 without causing a reduction in space efficiency and an increase in manufacturing cost.

  Further, according to the present embodiment, as described above, each arc-shaped convex portion 22 formed on each base portion 19 of each mounting member 17a, 17b, 17a ', 17b' has a diameter on the base portion 19 that is the above-described positioning. It is formed so that it is larger than the diameter of the hole 18 and the amount of protrusion from the base portion 19 is smaller than the depth of each positioning hole 18.

  When each engaging part 22 formed in each base part 19 of each mounting member 17a, 17b, 17a ', 17b' is cylindrical as shown in FIG. 8, for example, each mounting member 17a, 17b, When attaching 17 a ′ and 17 b ′ to each housing 16, in order to easily engage each engagement portion 22 of each attachment member 17 a, 17 b, 17 a ′ and 17 b ′ in each positioning hole 18 of each housing 16, The diameter of each positioning hole 18 needs to be set larger than the diameter of each engaging portion 22. For this reason, as shown in FIG. 9, with each engaging portion 22 engaged with each positioning hole 18, rattling occurs on each mounting member 17a, 17b, 17a ′, 17b ′ (only one side) It is shown.). When the mounting members 17a, 17b, 17a ′, 17b ′ are wobbled, it becomes difficult to align the axis of each engaging portion 22 with the center of each positioning hole 18, and each mounting member 17a, 17b, 17a 'and 17b' cannot be attached at a predetermined attachment position. For this reason, each vehicle electronic device 12a, 12b cannot be attached to the attachment portion 11 in a predetermined attachment posture.

  On the other hand, according to the present embodiment, as described above, the diameter of each arc-shaped convex portion 22 on each base 19 is larger than the diameter of each positioning hole 18, and the protruding amount of each arc-shaped convex portion 22 is each positioning hole. When the mounting members 17a, 17b, 17a ′, 17b ′ are mounted on the housings 16 of the vehicle electronic devices 12a, 12b, the projecting ends of the arc-shaped convex portions 22 are Since each arcuate convex portion 22 abuts on each positioning hole 18 so as to block each positioning hole 18 without abutting against the closed end 18 a of the positioning hole 18, each positioning hole 18 is contacted. It is possible to prevent the mounting members 17a, 17b, 17a ′ and 17b ′ from rattling as in the prior art when the arc-shaped convex portions 22 are engaged. Thereby, each attachment member 17a, 17b can be stably aligned to the predetermined attachment position where the center of each arcuate convex part 22 and the center of each positioning hole 18 respectively correspond. Therefore, since each attachment member 17a, 17b, 17a ', 17b' can be attached to a predetermined attachment position, each vehicle electronic device 12a, 12b can be attached to the attachment portion 11 in a predetermined attachment posture.

  In the present embodiment, an example is shown in which each claw 26 is formed so as to partially peel the plating layer 21 of the second mounting member 17b by the tightening force of the screw member 24 so as to contact the second mounting member. However, instead of this, each claw 26 may be formed so as to penetrate the plating layer 21 of the second mounting member 17b and contact the second mounting member 17b by the tightening force of the screw member 24. it can. In addition, although an example in which three claws are formed on the first mounting member 17a is shown, three or less or three or more claws 26 may be formed on the first mounting member 17a instead. it can. Furthermore, although the example in which each nail | claw was formed in the 1st attachment member was shown, it replaces with this and each nail | claw can be formed in a 2nd attachment member.

  In the present embodiment, each of the mounting members 17a, 17b, 17a ′, and 17b ′ has a pair of rising portions 20. However, instead of this, one rising portion 20 may be unnecessary. In accordance with this, one attachment portion 15 of the attachment portion 11 can be made unnecessary.

  Further, in the present embodiment, the example in which the two vehicle electronic devices 12a and 12b are arranged along the vehicle width direction is shown, but instead, the two vehicle electronic devices 12a and 12b are arranged on the upper and lower sides of the vehicle. The present invention can be used when arranged along a direction. Moreover, although the example using two vehicle electronic devices 12a and 12b was shown, it can replace with this and can use two or more vehicle electronic devices.

  In addition, although the example in which each positioning hole 18 has a concave shape having a closed end 18a is shown, each positioning hole 18 can be formed so as to penetrate each side wall 16a of each housing 16 instead. . In this case, each arc-shaped convex portion 22 can be formed such that the amount of protrusion from the base portion 19 is not greater than the depth of each positioning hole 18.

  Further, in the present embodiment, in order to position each mounting member 17a, 17b, 17a ', 17b' on the side wall 16a of each housing 16, each base member 19 of each mounting member 17a, 17b, 17a ', 17b' Although an example in which a plurality of engaging portions 22 that engage with the respective positioning holes 18 formed in the respective side walls 16a of the respective housings 16 is formed is shown, instead of this, as shown in FIG. 19 can be formed with fitting portions 27 that fit into the positioning holes 18, respectively. In this case, each positioning hole 18 can be formed in each side wall 16a of each housing 16 so as to penetrate each side wall 16a.

Each fitting portion 27, as shown in FIG. 10, is formed to protrude toward the respective base 19 to the side wall 16a of the housing 16, the width dimension toward from the proximal end 27a to the tip 27b to decrease gradually cone It consists of a body. This cone-shaped body can be constituted by, for example, a cone or a polygonal pyramid such as a quadrangular pyramid, and can be appropriately changed according to the shape of each positioning hole 18.

  Moreover, the protrusion dimension from each base part 19 of each fitting part 27 is set so that it may become larger than the depth dimension of each positioning hole 18 in the example of illustration. In addition, the width dimension of each fitting portion 27 on each base portion 19 is larger than the diameter of each positioning hole 18, and each housing portion of each base portion 19 is fitted in each fitting portion 27 in each positioning hole 18. 16 is set so that a surface 19 a on the side wall 16 a side contacts the side wall 16 a of each housing 16.

  In each base 19, in the example shown in FIG. 10, a groove 28 that is continuous with the base end 27 a of each fitting portion 27 is formed around each fitting portion 27.

  Thus, each fitting part 27 fitted into each positioning hole 18 is formed of a cone-shaped body, and the width dimension of each fitting part 27 on each base 19 is larger than the diameter of each positioning hole 18. Therefore, when each attachment member 17a, 17b, 17a ', 17b' is attached to each housing 16 of each vehicle electronic device 12a, 12b, when each fitting portion 27 is inserted into each positioning hole 18, respectively, Each fitting portion 27 abuts on the edge portion 18 b of each positioning hole 18 so as to block each positioning hole 18. This prevents the mounting members 17a, 17b, 17a ′ and 17b ′ from rattling as in the prior art when the respective fitting portions 27 are fitted in the respective positioning holes 18. The member can be stably aligned at a predetermined mounting position where the center of each fitting portion 27 and the center of each positioning hole 18 are matched. Therefore, since each attachment member 17a, 17b, 17a ', 17b' can be attached to a predetermined attachment position, the vehicle electronic devices 12a, 12b can be attached to the attachment portion 11 in a predetermined attachment posture.

  As in the example shown in FIG. 4, when each arc-shaped convex portion 22 engaged with each positioning hole 18 has an arc-shaped longitudinal section, each arc-shaped convex portion 22 defines each positioning hole 18 as described above. By abutting the edge 18b of each positioning hole so as to close, each mounting member 17a, 17b does not rattle in the engagement state of each arc-shaped convex portion 22 to each positioning hole 18, The mounting members 17a and 17b can be reliably and stably aligned with predetermined mounting positions in which the centers of the arc-shaped convex portions 22 and the centers of the positioning holes 18 coincide with each other. Even if each arcuate convex portion 22 is pushed into each positioning hole 18, the edge portion of each positioning hole 18 from each arcuate convex portion 22 because it is simply in contact with the edge portion 18 b of each positioning hole 18. Large force acting on 18b The portion acts on the edge 18b of each positioning hole 18 from each arc-shaped convex portion 22 as a force that deflects the edge toward the inside of each housing 16, and from each edge 18b of each positioning hole 18 to each arc-shaped convex. Most of the reaction force acting on the portion 22 acts as a force pushing the arc-shaped convex portions outward of the housings 16, so that the arc-shaped convex portions 22 are held in the positioning holes 18. For example, when each housing 16 tilts in a state where each arcuate convex portion 22 is engaged with each positioning hole 18, each mounting member 17 a, 17 b, 17 a ′, 17 b ′ may drop from each housing 16. There is. If each mounting member 17a, 17b, 17a ', 17b' falls off from each housing 16, the positioning of each mounting member 17a, 17b, 17a ', 17b' to the side wall 16a of each housing 16 is not performed again. must not.

  On the other hand, in the example shown in FIG. 10, as described above, each fitting portion 27 is made of a cone, so that each fitting portion 27 comes into contact with the edge portion 18 b of each positioning hole 18. In this state, when each fitting portion 27 is pushed into each positioning hole 18, most of the force applied from each fitting portion 27 to the edge portion 18 b of each positioning hole 18 spreads each positioning hole 18. The force acts on the edge portion 18b of each positioning hole 18 from each fitting portion 27 as a force. Thereby, in a state where each fitting portion 27 is pushed into each positioning hole 18, most of the reaction force acting on each fitting portion 27 from the edge portion 18 b of each positioning hole 18 causes each fitting portion 27 to move. Since it acts as a tightening force to be tightened from the periphery, each fitting portion 27 is difficult to come out from each positioning hole 18. Accordingly, when each housing 16 is tilted, for example, with each fitting portion 27 fitted in each positioning hole 18, each mounting member 17 a, 17 b, 17 a ′, 17 b ′ is dropped from each housing 16. Therefore, the attachment work of each attachment member 17a, 17b, 17a ', 17b' to each housing 16 can be performed more easily.

  Furthermore, as described above, the size of the width dimension of each fitting portion 27 on each base portion 19 is the fitting state of each fitting portion 27 to each positioning hole 18, and each housing 16 of each base portion 19 is fitted. The side surface 19a on the side wall 16a side is set so as to contact the side wall 16a of each housing 16.

  When gaps are formed between the base portions 19 and the side walls 16a of the housings 16 in a state where the mounting members 17a, 17b, 17a ′ and 17b ′ are aligned with the housings 16, There is a possibility that the base portion 19 may swing, and the mounting postures of the mounting members 17a, 17b, 17a ′ and 17b ′ to the housings 16 may become unstable. For this reason, even if each fitting portion 27 is fitted in each positioning hole 18, each mounting member 17 a, 17 b, 17 a ′, 17 b ′ falls off from each housing 16.

  On the other hand, according to the present embodiment, as described above, the surface 19a on the side wall 16a side of each housing 16 of each base portion 19 is fitted to each housing in the fitting state of each fitting portion 27 to each positioning hole 18. When the gaps are formed between the surfaces 19a of the base portions 19 and the housings 16 in the fitted state of the fitting portions 27 in the positioning holes 18 because they are in contact with the 16 side walls 16a. In comparison with this, the mounting posture of each mounting member 17a, 17b, 17a ', 17b' to each housing 16 can be stabilized.

  Further, as described above, since each base portion 19 is formed with the groove 28 connected to the base end 27a of each fitting portion 27 so as to surround each fitting portion 27, each base portion of each fitting portion 27 is formed. As shown in FIG. 10, even when the rising portion 27 c from 19 spreads toward the base portion 19, the rising portion 27 c causes the side wall 16 a of each housing 16 and the surface 19 a of each base portion 19 to extend. It is possible to reliably prevent a gap from being formed between the two. Thereby, the attachment attitude | position of each attachment member 17a, 17b, 17a ', 17b' to each housing 16 can be stabilized more reliably.

  Moreover, although the example in which each attachment portion 15 of the attachment portion 11 is formed with the screw hole 15a to be engaged with the screw member 24 has been shown, instead of this, each attachment portion 15 of the attachment portion 11 has a screw thread. An insertion hole allowing insertion of the member 24 is formed, and the screw member 24 inserted through the insertion hole can be fastened with a nut.

It is a perspective view which shows roughly the attachment structure of the electronic device for vehicles concerning this invention. It is a perspective view which shows roughly attachment of the attachment member to the housing of the electronic device for vehicles. It is a perspective view which shows roughly the attachment member which concerns on this invention. It is a longitudinal cross-sectional view which shows roughly the engagement state of the arc-shaped convex part formed in the attachment member, and the positioning hole formed in the housing of the vehicle electronic device. It is a perspective view which shows roughly the 1st attachment member in which the nail | claw which concerns on this invention was formed. It is a longitudinal cross-sectional view which shows the state which the nail | claw contact | abutted to the 2nd attachment member at the time of clamping | tightening of a screw member. It is a longitudinal cross-sectional view which shows roughly the fastening state of the screw member which concerns on this invention. It is a longitudinal cross-sectional view which shows roughly the engagement state of the engaging part and positioning hole in case the engaging part formed in each attachment member has comprised the cylindrical shape. It is a perspective view which shows roughly the state in which rattling occurred in the attachment member. FIG. 5 is a longitudinal sectional view schematically showing an example different from the example shown in FIG. 4. It is a perspective view which shows roughly the attachment structure of the conventional vehicle electronic device. It is a perspective view which shows roughly the attachment structure of the conventional vehicle electronic device different from FIG. It is a longitudinal cross-sectional view which shows the fastening state of the conventional screw member roughly. It is a perspective view which shows roughly the attachment structure of the conventional vehicle electronic device. It is a perspective view which shows the conventional attachment member schematically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Mounting part 12a, 12b Vehicle electronic device 13 Mounting structure 16 Housing 17a, 17b Mounting member 18 Positioning hole 19 Base part 20 Standing part 20a Insertion hole 21 Plated layer 22 Arc-shaped convex part 24 Screw member 26 Claw 27 Fitting part 27a Base end (Base end of mating part)
27b Tip (tip of fitting part)
28 groove

Claims (5)

  An attachment structure for attaching at least two vehicular electronic devices to a conductive attachment portion provided on a vehicle body, wherein each of the vehicular electronic devices overlaps with each other on the housing and the attachment portion. A mounting member that protrudes outward from the housing and functions as a ground terminal of a circuit inside each vehicle electronic device, and has electrical conductivity, and attaches each vehicle electronic device to the mounting portion. Screw members that pass through the mounting members that overlap each other as much as possible, and fasten the mounting members to the mounting portion, respectively, and either one of the mounting members has a tightening force by tightening the screw members. A mounting structure for a vehicular electronic device, wherein a claw for reducing electrical resistance between the mounting members is formed.   A plating layer for rust prevention is applied to the surface of each mounting member, and the claw partially destroys the plating layer of the other mounting member by the tightening force of the screw member, The vehicle electronic device mounting structure according to claim 1, wherein the mounting member directly contacts the other mounting member.   Each housing is formed with a positioning hole for defining the mounting position of each mounting member to each housing, and each mounting member rises from the base and the base attached to the housing. Each of the rising portions is formed with an insertion hole for allowing the screw member to be inserted, and the rising portion of the one mounting member is formed with the claw. In addition, each of the bases is formed with an arc-shaped protrusion that engages with each of the positioning holes when the mounting members are attached to the housings, and the diameter of the arc-shaped protrusions on the base is The vehicle electronic device mounting structure according to claim 1, wherein the mounting structure is larger than the diameter of the positioning hole. Each housing is formed with a positioning hole for defining the mounting position of each mounting member to each housing, and each mounting member rises from the base and the base attached to the housing. Each of the rising portions is formed with an insertion hole for allowing the screw member to be inserted, and the rising portion of the one mounting member is formed with the claw. And each base portion is formed with a fitting portion that protrudes from the base portion toward the housing and is fitted into each positioning hole when the mounting member is attached to the housing. fitting portion is made conical body width direction from its base end to the tip is reduced gradually, the width at the said on each base may be greater than the diameter of the positioning hole Mounting structure of a vehicle electronic device according to Motomeko 1.   The width dimension of the fitting portion on the base portion is set so that the housing-side surface of the base portion contacts the housing in the fitting state of the fitting portion to the positioning hole, The mounting structure for a vehicle electronic device according to claim 4, wherein each base portion is formed with a groove continuous with the base end of the fitting portion so as to surround the fitting portion.

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