JP5174100B2 - Cable holding structure for vehicles - Google Patents

Description

  The present invention relates to a vehicle cable holding structure, and more particularly to a vehicle cable holding structure that is inserted between cables and fixed to a vehicle body.

  In general, a holding structure for holding a circuit board used in a vehicle or the like and a cable connected thereto is known. For example, in the cable holding structure described in Patent Document 1, a circuit board to which a coaxial cable is connected is supported by a lower chassis, the circuit board and the chassis are fixed to a base plate using screws, and these are the upper casing. It is sealed with.

  In general, in a structure in which a substrate is sandwiched using an upper case, a lower case, and the like, there is a problem that the case is decomposed by an impact such as dropping. In order to solve this problem, for example, a housing structure as described in Patent Document 2 has been proposed. In the housing structure described in Patent Document 2, an upper case and a lower case are integrally coupled by engagement of an engagement portion and an elastic engagement piece. And the retaining piece provided in the upper case contacts the back of the engaging piece of the lower case, and the engaging piece is configured not to come out of the engaging portion.

JP 2008-263537 A JP 10-23563 A

  However, the cable holding structure described in Patent Document 1 has a large number of parts and a large number of processes related to assembly. Specifically, it is necessary to screw the board, chassis, and base plate at a time, and to solder the board and the cable, and the assembly is complicated. Further, there is a problem that the case is disassembled due to vibrations generated during traveling of the vehicle, twisting of the cable, and the like. Furthermore, there is a problem that the cable is disconnected or cut when an external stress is applied to the cable exposed from the case.

  In addition, the housing structure described in Patent Document 2 is not such that a cable is connected to the outside from a circuit board or the like in the housing in the first place. Moreover, since it does not have a bracket in the first place, it cannot be fixed to the vehicle.

  In view of such circumstances, the present invention is intended to provide a vehicle cable holding structure in which the number of parts and the number of processes related to assembly are small, and the case is not easily disassembled due to vibration or twisting of the cable.

  In order to achieve the above-described object of the present invention, a vehicle cable holding structure according to the present invention includes a board connected between cables and on which a predetermined circuit is placed, a top plate covering the board, and a part of the cable. A top case having a first holding portion that holds the first plate, a plurality of hook portions that protrude in a direction perpendicular to the plate surface of the top plate and have flexibility, and a cable together with the first holding portion. A second holding portion that holds a part of the cable so as to be encapsulated, a lock portion that suppresses the direction in which the hook portion bends after the top case is fitted, and a bottom plate, on which the substrate is placed A vehicle having a bottom case, an engaging portion with which a hook portion of the top case engages, a holding portion for pinching the bottom case, and a board connecting standing portion electrically connected to the board. A conductive bracket for electrical connection to the body, It is.

  Here, the hook portion, the lock portion, and the engagement portion are respectively arranged on both sides of the substrate, and the hook portion is configured to bend toward the substrate side and engage with the engagement portion from the substrate side. May be configured not to suppress the bending when the hook portion engages with the engaging portion, and to prevent the hook portion from bending toward the substrate after the engagement.

  Further, the lock portion may be directed from the center of the bottom plate of the bottom case to both sides, the root thereof may be disposed closer to the bracket than the bottom plate, and the tip may be disposed closer to the substrate than the bottom plate. .

  Further, the bracket may have a cutout portion at a position corresponding to the lock portion, and a part of the lock portion may be located in the cutout portion.

  In addition, the first biting part and the second biting part may have an annular rib on the contact surface with the cable that becomes a series after the top case and the bottom case are fitted.

  Further, the bottom case may have a claw portion for holding the substrate.

  The cable holding structure for a vehicle according to the present invention has an advantage that the number of parts and the number of processes relating to assembly are small, and the case is hardly decomposed due to vibration, cable twisting, or the like.

FIG. 1 is an exploded perspective view for explaining a vehicle cable holding structure according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view for explaining the vehicle cable holding structure according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view for explaining the operation of the hook portion during assembly of the vehicle cable holding structure according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view for explaining a vehicle cable holding structure according to a second embodiment of the present invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described together with illustrated examples. FIG. 1 is an exploded perspective view for explaining a vehicle cable holding structure according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view for explaining the cable holding structure for a vehicle according to the first embodiment of the present invention, in which FIG. 2 (a) is a cross-sectional view passing through the vicinity of the board connecting standing portion, FIG. 2B is a cross-sectional view passing near the hook portion. As shown in the figure, the vehicle cable holding structure of the present invention mainly includes a substrate 10, a top case 20, a bottom case 30, and a bracket 40. Using such a vehicle cable holding structure, the cable 50 is held by a vehicle body (not shown).

  The substrate 10 has a predetermined circuit mounted thereon and is connected between the cables 50. For example, an amplifier circuit, a filter circuit, and the like are placed on the substrate 10. Cables 50 are soldered at predetermined positions on both ends of the substrate 10. As a result, it is possible to amplify or filter the signal passing through the cable 50. Further, the board 10 may be provided with a mis-assembly prevention groove 11 for preventing the board 10 from being wrongly assembled during assembly. The misassembly prevention groove 11 fits into an erroneous assembly prevention portion 35 of the bottom case 30 described later when correctly assembled.

  The top case 20 has a top plate 21, a first biting portion 22, and a plurality of hook portions 23. The top plate 21 covers the substrate 10 and constitutes a main part of the top case 20. The first biting portion 22 bites a part of the cable 50. In the illustrated example, a first biting portion 22 is provided for each of the input side and output side cables. The first biting portion 22 is provided with ribs 24 on the contact surface with the cable 50. The plurality of hook portions 23 protrude toward the substrate 10 in the direction perpendicular to the plate surface of the top plate 21. The hook part 23 has flexibility and engages with an engaging part 43 of a bracket 40 described later. In addition, the hook portion 23, a lock portion 32, which will be described later, and an engagement portion 43 are respectively arranged on both sides of the substrate. The hook portion 23 is configured to bend toward the substrate 10 and engage with the engaging portion 43 from the substrate 10 side.

  The bottom case 30 is for placing the substrate 10, and includes a second biting portion 31, a lock portion 32, and a bottom plate 33. The second biting portion 31 bites a part of the cable 50 so as to enclose the cable 50 together with the first biting portion 22. Similar to the first biting portion 22, the second biting portion 31 has ribs 36 on the contact surface with the cable 50. That is, the rib 24 and the rib 36 constitute an annular rib that is a series after the top case and the bottom case are fitted together. The rib 24 and the rib 36 do not have to be annular as long as the rib 24 and the rib 36 are configured to bite into and hold the cable 50. Since the cable 50 is bitten by the ribs 24 and 36 from multiple directions, it is possible to prevent the cable 50 from being disconnected or cut when stress is applied to the cable 50.

  The lock part 32 suppresses the direction in which the hook part 23 bends after the top case 20 is fitted. As illustrated, the lock portion 32 is disposed at a position corresponding to the hook portion 23. The lock part 32 should just be provided in the position which suppresses that the hook part 23 moves to the direction which remove | deviates from the engaging part 43. FIG. That is, the lock portion 32 is configured not to suppress the bending when the hook portion 23 engages with the engaging portion 43, and to suppress the hook portion 23 from being bent toward the substrate 10 after the engagement. Just do it. In the illustrated example, the lock portion 32 is disposed so as to face both sides from the center of the bottom plate 33 and is provided so as to contact the hook portion 23.

  The bottom plate 33 covers the back surface of the substrate 10 and constitutes a main part of the bottom case 30. The substrate 10 is configured to be sandwiched by a plurality of claw portions 34 provided on the bottom plate 33. Further, the bottom case 30 is provided with an erroneous assembly preventing portion 35, and the substrate 10 is fitted into the erroneous assembly preventing portion 35 in accordance with the groove shape of the erroneous assembly preventing groove 11 of the substrate 10, whereby 10 is prevented from being assembled by mistake. In the illustrated example, each of the misassembly prevention grooves 11 and the misassembly prevention portion 35 is provided one by one. However, the vehicle cable holding structure of the present invention is not limited to this, and a configuration in which the board 10 is prevented from being assembled incorrectly. If so, more misassembly prevention grooves and misassembly prevention sections may be provided.

  Further, the bottom case 30 is provided with a through hole 37 through which a board connecting standing portion 42 of a bracket 40 described later passes. This facilitates the alignment of the bracket 40 with the bottom case 30 and the substrate 10, and prevents these deviations. The board connection standing portion 42 is disposed inside the bottom case 30 through the through hole 37. Further, the top case 20 and the bottom case 30 prevent exposure of energized portions between the board connection standing part 42 and the board 10 or between the cable 50 and the board 10.

  The bracket 40 has a holding portion 41 and a board connection standing portion 42, has electrical conductivity, and is electrically connected to a vehicle body (not shown). In addition, the bracket 40 should just be integrally molded by press work etc. about the metal plate which has electroconductivity.

  The holding part 41 has an engaging part 43 with which the hook part 23 of the top case 20 is engaged, and holds the bottom case 30. Further, the board connection standing portion 42 is electrically connected to the board 10. The board connection standing portion 42 is configured to sandwich the bottom case 30 through the through hole 37.

  In the illustrated example, the bracket 40 has a cutout portion 44 at a position corresponding to the lock portion 32. The cutout portion 44 may be configured integrally with the engagement portion 43 as shown in the illustrated example. After the bottom case 30 is fitted to the bracket 40, the lock portion 32 can be accessed from the cutout portion 44. With this configuration, for example, when the top case 20 is removed for maintenance or the like, the hook portion 23 can be moved away from the engaging portion 43 by breaking the lock portion 32 from the cutout portion 44. It is also possible to open the top case 20.

  In the illustrated example, the holding portion 41 and the board connection standing portion 42 of the bracket 40 are arranged symmetrically, and are configured to be able to hold the bottom case 30 in either direction. However, this invention is not limited to this, You may arrange | position to non-object. In the illustrated example, a mark through hole 48 through which a mark convex portion (not shown) provided on a work table or the like passes and a mark concave portion 38 into which the convex portion is fitted are shown. . This is provided to prevent erroneous assembly when the direction of the bracket and the input / output direction of the board are determined.

  Next, the assembly operation of the vehicle cable holding structure of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view for explaining the operation of the hook portion during assembly of the vehicle cable holding structure of the present invention. FIG. 3 (a) shows the top case assembly start, and FIG. FIG. 6 is a cross-sectional view for explaining a state in the middle of assembling the top case.

  The vehicle cable holding structure of the present invention configured as described above is assembled as follows, for example. First, the bottom case 30 is fitted to the bracket 40. Next, the substrate 10 is placed on the bottom case 30 and the cable 50 is set. Then, the cable 50 and the board connection standing portion 42 are respectively soldered to the board 10. Finally, the top case 20 is engaged. The cable 50 may be soldered to the substrate 10 in advance.

  The hook part 23, the lock part 32, and the engaging part 43 are arranged on both sides of the substrate 10 at corresponding positions. When the top case 20 is engaged from the upper side of the substrate 10, the tip of the hook portion 23 comes into contact with the inside of the holding portion 41 and bends toward the substrate 10 (see FIG. 3A). Thereby, the front-end | tip of the hook part 23 becomes diagonal, and it can pass through the engaging part 43 which is an opening part, without being inhibited by the lock part 32 (refer FIG.3 (b)). Next, the tip of the hook portion 23 is engaged with the engaging portion 43 from the substrate 10 side when the hook portion 23 returns to its original shape by the elastic force of the hook portion 23 (see FIG. 2B). . After the hook portion 23 is engaged with the engaging portion 43, the distal end of the lock portion 32 comes into contact with the back surface of the distal end of the hook portion 23. In addition, the contact between the hook portion and the lock portion does not need to be completely in contact with each other, as long as the hook portion is close enough to be restrained by the lock portion so as not to move in a direction away from the locking portion. good. Thereby, it is suppressed that the hook part 23 bends to the board | substrate 10 side. Therefore, the top case 20 is difficult to come off, and the vehicle cable holding structure after assembly is prevented from being disassembled.

  Next, a vehicle cable holding structure according to a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional view for explaining a vehicle cable holding structure according to a second embodiment of the present invention. In the vehicle cable holding structure of the second embodiment of the present invention, the lap portion (locking portion) of the hook portion 23 is deeper (the wrap allowance is increased). When the wrap margin is increased, the hook portion 23 is firmly engaged by the engaging portion 43, so that the hook portion 23 is further difficult to come off from the engaging portion 43. However, if the lap allowance is simply increased, the hook portion 23 will bend at the time of engagement, and there is a possibility that it will come into contact with the lock portion 32 during the bending. Thus, in the cable holding structure for a vehicle according to the second embodiment of the present invention, the lock portion 32 is directed from the center of the bottom plate 33 toward both sides, and its root is disposed on the bracket 40 side of the bottom plate 33. Yes. The distal end of the lock portion 32 is disposed closer to the substrate 10 than the bottom plate 33. That is, the base portion of the lock portion 32 is disposed below the bottom plate 33, and the tip portion extends upward from the root. Since the root portion of the lock portion 32 is disposed below the bottom plate 33, the root portion which is a part of the lock portion 32 is located in the notch portion 44 of the bracket 40 as shown in FIG. 4. It will be.

  With this configuration, when the top case is fitted, when the hook portion 23 abuts on the inner side of the holding portion 41 and is bent toward the substrate 10, the tip of the hook portion 23 is near the root of the lock portion 32. Therefore, smooth fitting is possible. Furthermore, since the base portion of the lock portion 32 is configured to be positioned in the notch portion 44 of the bracket 40, the height of the vehicle cable holding structure is also reduced.

  As described above, the vehicular cable holding structure of the present invention is configured as in the first embodiment and the second embodiment described above, so that stress is applied to the case due to vibrations generated during running of the vehicle, twisting of the cable, and the like. Even when added, since the tip of the lock portion 32 is in contact with the back surface of the hook portion 23, it is possible to prevent the top case 20 and the bottom case 30 from being disassembled. Moreover, since the board | substrate 10 and the bracket 40 are being fixed by soldering etc., it can prevent that a board | substrate shift | deviates.

  Note that the vehicle cable holding structure of the present invention is not limited to the above-described illustrated examples, and it is needless to say that various changes can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Board | substrate 11 Misassembly prevention groove | channel 20 Top case 21 Top plate 22 1st clamping part 23 Hook part 24 Rib 30 Bottom case 31 2nd clamping part 32 Lock part 33 Bottom plate 34 Claw part 35 Misassembly prevention part 36 Rib 37 Through-hole 38 Recessed portion for mark 40 Bracket 41 Nipping portion 42 Standing portion for connecting to board 43 Engaging portion 44 Notch portion 48 Through-hole for mark 50 Cable

Claims (6)

A vehicle cable holding structure that is inserted between cables and fixed to a vehicle body, the vehicle cable holding structure comprising:
A substrate connected between cables and on which a predetermined circuit is placed;
A top plate that covers the substrate; a first biting portion that bites a portion of the cable; and a plurality of flexible hook portions that protrude toward the substrate side in a direction perpendicular to the plate surface of the top plate. A top case,
A second holding portion for holding a part of the cable so as to enclose the cable together with the first holding portion, a lock portion for suppressing a direction in which the hook portion bends after the top case is fitted, and a bottom plate, A bottom case on which the substrate is placed;
A vehicle body having an engaging portion with which the hook portion of the top case engages and a holding portion for holding the bottom case; and a board connecting standing portion electrically connected to the substrate. A conductive bracket for electrical connection;
A vehicle cable holding structure characterized by comprising:   The cable holding structure for a vehicle according to claim 1, wherein the hook portion, the lock portion, and the engaging portion are respectively arranged on both sides of the substrate, and the hook portion is bent toward the substrate side and engaged from the substrate side. The lock portion is configured not to suppress bending when the hook portion engages with the engaging portion, and to suppress bending of the hook portion toward the substrate side after the engagement. A cable holding structure for a vehicle.   In the vehicle cable holding structure according to claim 1 or 2, the lock portion is directed from the center of the bottom plate of the bottom case toward both sides, and the root thereof is disposed on the bracket side of the bottom plate, The vehicular cable holding structure is characterized in that the front end portion is disposed on the board side of the bottom plate.   The cable holding structure for a vehicle according to any one of claims 1 to 3, wherein the bracket has a cutout portion at a position corresponding to the lock portion, and the lock portion is partially located in the cutout portion. A cable holding structure for a vehicle.   5. The vehicle cable holding structure according to claim 1, wherein the first and second biting portions are fitted on a contact surface with the cable after the top case and the bottom case are fitted to each other. A cable holding structure for a vehicle having a series of annular ribs.   The vehicle cable holding structure according to any one of claims 1 to 5, wherein the bottom case includes a claw portion for sandwiching the substrate.