JP5067176B2 - In-vehicle electrical junction box - Google Patents

Description

  The present invention relates to an on-vehicle electrical junction box, and in particular, can pull out a group of electric wires connected to an internal circuit of the electric junction box to the outside in a compact manner and also fix a wiring direction of the drawn-out electric wire group.

  Conventionally, as shown in FIG. 10, the wire group W connected to the internal circuit of the electrical junction box is drawn to the outside from the bottom wall side of the lower cover 101, and the wire group W extends outside the peripheral wall of the electrical junction box 100. A wiring route is taken (see JP-A-8-107618). However, depending on the position of the counterpart device of the electric wire group W, it is necessary to perform wiring to route the outer peripheral wall of the electric connection box 100 in the opposite direction. There is a problem that the space required for installation becomes large. Also, if other equipment is installed along the peripheral wall of the electrical junction box or the vehicle body panel is close, it is necessary to route the wires further to a position where they do not interfere with the equipment or the vehicle body panel. In such a case, the wiring length becomes large, the stability of the electric wire group is deteriorated, and rattling is likely to occur due to vibration during traveling of the vehicle.

  When wiring the drawn wire group W by bending it in a direction different from the drawing direction, a protector 102 as shown in FIG. 11 is attached to the vehicle body side, and the protector 102 holds the wire group W for wiring. It is necessary to fix the direction to the required bending direction. Therefore, there are problems that the number of parts and the number of work steps are increased, and a space for attaching the protector 102 is further required, so that the space cannot be saved.

JP-A-8-107618

  The present invention has been made in view of the above problems, and enables the group of electric wires connected to the internal circuit of the electric junction box to be drawn out to the outside in a compact and stable wiring state. The problem is that it can be fixed.

In order to solve the above problems, the present invention is an in-vehicle electrical junction box that is fixed to a vehicle body via a bracket protruding from the outer surface of a case,
The bracket is provided with an opening for inserting an electric wire in a base portion serving as a case connecting portion, and surrounds three sides of the electric wire insertion space with two orthogonal sides of the opening and the outer surface of the case, and the base portion A vertical electric wire insertion space that protrudes from the outer peripheral wall of the case with a space therebetween and surrounds the electric wire group passing through the opening between the vehicle fixing portion and the outer peripheral wall of the case. And a projecting portion in the lateral direction is provided on the upper portion of the vehicle body fixing portion , and the fastening unit surrounds the electric wire group that is inserted into the electric wire insertion space and drawn out of the case, and binds the electric wire group. It provides an electrical connection box for use in vehicles, characterized in that are only set the band insertion holes of.

  As described above, by providing a wire insertion space surrounding the wire group connected to the internal circuit of the case between the bracket and the outer surface of the case, the wire group can be in a compact and stable wiring state along the case outer surface. The electric wire group can be pulled out of the case, and since the electric wire group is surrounded by the electric wire insertion space, the electric wire group is also prevented from interfering with peripheral devices and vehicle body panels. Therefore, according to the above configuration, for example, by pulling the wire group drawn downward from the bottom wall of the lower cover of the electrical junction box into the wire insertion space, the wire group is drawn upward in a compact and stable wiring state. be able to.

In addition, since the insertion hole of the fastening band that binds the wire group that is pulled out of the case is provided in the protruding portion of the bracket, the insertion hole is provided by binding and fixing the wire group with the fastening band that is inserted through the insertion hole. The electric wire group can be positioned and held near the given position, and the wiring direction of the electric wire group can be fixed in a predetermined direction. In other words, since the bracket can have the function of a protector that fixes the wiring direction of the wire group, the protector that has been installed in the vicinity of the electrical junction box is unnecessary, reducing the number of parts and man-hours, and saving space. Can be achieved.

A group of wires that are inserted through the wire insertion space and drawn out of the case are branched and routed in different directions, and the bracket is provided with the protrusion corresponding to the direction of the branch line, and the branch line is provided at the protrusion. It is preferable to provide a plurality of insertion holes for fastening bands that are fastened each time.

As described above, provided with a protrusion corresponding to the branch direction of the wire group drawn in the bracket, when the projecting portion Ru provided a plurality of through holes of the fastening band for fastening to each branch line, corresponding to the branch direction The branch direction of each branch line can be fixed simply by inserting the fastening band into the insertion hole and binding and fixing the branch lines. Further, the branch line can be stabilized by binding and fixing the branch line to the protruding portion.
In addition, it is preferable to provide at least the number corresponding to the number of branch lines whose direction needs to be regulated.

When the electric wire group inserted into the electric wire insertion space branches in a T shape, the electric wire insertion space is at a position corresponding to the vertical axis portion of the T shape, and the protrusion provided on the bracket is in the horizontal axis direction of the T shape. to provided, that are on either side of the horizontal axis is provided an insertion hole of the fastening band.

According to the above configuration, a group of wires wired upward through the wire insertion space provided at a position corresponding to the vertical axis portion of the T shape is branched to the left and right along the protruding portion in the horizontal axis direction of the T shape. Then, the branching direction of the branch line can be fixed in the left-right direction by inserting the fastening band into the insertion holes provided on the left and right sides of the projecting portion to bind and fix the branch lines.
The fastening band has a band portion provided with locking teeth protruding from a main body portion having a through hole provided with a locking piece projecting, and the band portion is inserted into the insertion hole of the protruding portion and wound around the wire group. It is made to penetrate through the through hole later and to be engaged with the engaging teeth.

A bracket may be detachably locked and projected from at least one corner of the case outer surface, or the bracket may be integrally projected from the case outer surface .

As described above, the bracket may be detachably attached as a separate body from the case, or may be provided integrally with the case. For example, the bracket is configured to be detachably attached as a separate body from the case. Thus, even if the fixing position of the electric junction box and the shape of the fixing portion are different depending on the type of vehicle, it is possible to share the electric junction box with different vehicle types by changing only a separate bracket. For example, the electrical connection box itself can be handled as it is by simply changing the position of the bracket forming the wire insertion space, the shape of the protrusion, and the like according to the wiring conditions on the vehicle body side.
Moreover, the electrical junction box can be stably held by projecting the brackets at at least three corners.

As described above, a wire insertion opening is provided at the base of the bracket on the case connection side of at least one bracket , and the space surrounded by the opening and the outer surface of the case is defined as the wire insertion space. It is possible to surround the three sides of the space with the bracket and the outer surface of the case. Therefore, the wire group can be drawn outside while surrounding the wide range of the wire group and holding the wire group in a more stable state. The wire insertion opening is preferably cut out in an L shape with corners being rounded, for example.

  It is preferable that a rib for preventing interference protrudes on the outer surface of the case forming the electric wire insertion space so that the electric wire group that passes through the electric wire insertion space does not interfere with the fitting of the upper cover to the outer surface of the case.

When an electric wire group connected to the internal circuit of the case is inserted into the electric wire insertion space, the electric wire group is likely to be inclined to the case outer surface side, and the upper cover may not be attached by the electric wire group inclined to the case outer surface side.
However, as described above, a rib for preventing interference protrudes from the outer surface of the case forming the electric wire insertion space, and the electric wire group passing through the electric wire insertion space does not interfere with the fitting of the upper cover to the outer surface of the case. Accordingly, the upper cover can be easily fitted to the outer surface of the case by preventing the electric wire from falling to the outer surface side of the case by the interference prevention rib.
It is preferable that the interference prevention rib projecting on the outer surface of the case protrudes outward from the position of the outer surface of the peripheral wall of the upper cover attached to the case so that the electric wire is not caught when the upper cover is attached to the case.

  Moreover, it is preferable that a board-type clip is attached to a group of electric wires through which the electric wire insertion space is inserted, and the clip of the board-type clip is locked in a clip hole provided in the bracket.

  According to the above configuration, the electric wire group inserted through the electric wire insertion space is fixed to the board-type clip by tape winding or the like, and the board-type clip is fixed to the bracket, so that the electric wire group is clearly positioned and wired. The direction can be fixed and the stability of the electric wire group can be further enhanced. Therefore, the electric wire group can be prevented from falling to the outer surface side of the case.

  As described above, in the in-vehicle electrical junction box according to the present invention, the wire insertion space surrounding the wire group connected to the internal circuit of the case is provided between the bracket and the outer surface of the case. It can be pulled out of the case in a compact and stable wiring state along the outer surface of the case. Moreover, since the electric wire group is surrounded by the electric wire insertion space, it is possible to prevent the electric wire group from interfering with peripheral devices, vehicle body panels, and the like.

  In addition, as described above, since the insertion band of the fastening band that binds the electric wire group drawn out of the case is provided in the bracket, the insertion hole is obtained by binding and fixing the electric wire group with the fastening band inserted through the insertion hole. The electric wire group can be positioned and held near the position where the wire is provided, and the wiring direction of the electric wire group can be fixed in a predetermined direction. In other words, since the bracket can have the function of a protector that fixes the wiring direction of the wire group, the protector that has been installed in the vicinity of the electrical junction box is unnecessary, reducing the number of parts and man-hours, and saving space. Can be achieved.

  In particular, as described above, when the protrusion corresponding to the branch direction of the electric wire group to be drawn out is provided in the bracket, and a plurality of fastening band insertion holes for fastening for each branch line are provided in the protrusion, it corresponds to the branch direction. The branch direction of each branch line can be fixed simply by inserting the fastening band into the insertion hole and binding and fixing the branch lines. Further, the branch line can be stabilized by binding and fixing the branch line to the protruding portion.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a perspective view of the electrical junction box 1 viewed from above, FIG. 2 is a perspective view of the electrical junction box 1 viewed from below, and FIG. 3A is a plan view of the electrical junction box 1 of FIG.

The electrical junction box 1 is assembled by locking the lower cover 3 to the lower part of the case body 2 and attaching the upper cover (not shown) to the upper part of the case body 2.
As shown in FIG. 1, a relay mounting portion 2A and a fuse mounting portion 2B are provided inside the case body 2. The relay mounting portion 2A, the relay attached to the fuse mounting portion 2B, and the wire group W connected to the fuse are drawn from the case body 2 to the lower cover 3 and are formed in a substantially rectangular wire insertion port 4 provided on the bottom wall 3b of the lower cover 3. Through the outside.

  As shown in FIGS. 1 to 3, corner portions 2 b, 2 c, 2 d of the outer surface of the peripheral wall 2 a of the case body 2 are bent into L-shapes, and a first bracket 10 for fixing the electrical junction box 1 to the vehicle body, The second bracket 11 and the third bracket 12 are detachably attached by lock coupling.

Specifically, the outer surfaces of the peripheral wall 2a of the case body 2 and the peripheral wall 3a of the lower cover 3 are provided with refracting portions 2e and 3e that are recessed in an L shape, and the corner portion 2b on one end side of the refracting portion 2e One bracket 10 is lock-coupled. The 1st bracket 10 is provided with the attaching part to case body 2 which has fitting surface 10a, 10b so that it may become an L shape fitted along corner 2b, and it is on fitting surface 10a, 10b of the orthogonal direction. One lock portion 10c is provided for each. And the lock | rock part 10c provided in each of the fitting surfaces 10a and 10b is connected with the reinforcement rib 10d which made the corner | angular part round.
On the other hand, a locked portion 2f that is locked and coupled to each locking portion 10c is provided on each outer surface of the corresponding corner portion 2b of the case body 2.

The first bracket 10 attached to the corner 2b of the case body 2 includes a case connecting portion 10A that is locked to the case body 2 and a vehicle body fixing portion 10B.
Specifically, the vehicle body fixing portion 10B protrudes upward from one side end of the base portion 10h, and a bolt hole 10f is provided in the vehicle body fixing portion 10B. A clip mounting portion 10j is projected from the approximate center of the side portion of the base portion 10h orthogonal to the vehicle body fixing portion 10B, and a clip mounting hole 10g is provided on one side of the clip mounting portion 10j. At the corner of the clip mounting portion 10, a rotation preventing projection 10k of the substrate clip 21 is provided.
The other side of the clip mounting portion 10j is a fitting surface 10b between the corner 2b and one surface of the main body case 2, and the side portion near the other end of the base 10h is fitted perpendicularly to the fitting surface 10b. The surface 10a is used.
An opening 10e for inserting an electric wire is provided from one side of the clip mounting part 10j toward one side end (vehicle body fixing part 10B side) of the base part 10h. A corner portion where one side of the clip mounting portion 10j and a side portion of the base portion 10h are orthogonal to each other has a round shape.
Lock portions 10c are provided on the fitting surfaces 10a and 10b, respectively, and are coupled to the locked portions 2f provided on both surfaces of the corner portions 2b of the corresponding case body 2 to attach the first bracket 10 to the case body 2. Yes.
As described above, the electric wire drawn out from the electric wire insertion opening 4 by the outer peripheral surface 2a-1 of the case body 2 forming the bent portion 2e and the side portion near the one end of the base 10h of the first bracket 10 A wire insertion space 5 is formed through which the group W is inserted and the wire group W is drawn out above the electrical junction box 1.

Further, a protruding portion 10m in the lateral direction is provided from the upper portion of the vehicle body fixing portion 10B of the first bracket 10. The protrusion 10m is arranged in the horizontal axis direction when the electric wire insertion space 5 is a T-shaped vertical axis direction.
One insertion hole 10x, 10y of the fastening band 20 is provided on each of the left and right sides of the protrusion 10m.
As shown in FIG. 4, an insertion hole 10y of the fastening band 20 is provided on one side of the protruding portion 10m, and a plurality of lightening holes 10z penetrating vertically are provided in the vicinity of the insertion hole 10y. Although the lightening hole 10z is not necessarily required, sink marks or the like occur in the resin molded product, so that the deformation of the bracket can be prevented by providing the lightening hole.
As shown in FIG. 4A, the insertion hole 10y is arranged in parallel with the lightening hole 10z as viewed from above, and there is a possibility that the binding band 20 may be mistakenly passed through one of the lightening holes 10z. . Therefore, as shown in FIG. 4 (B), the insertion hole 10y for passing the fastening band 20 is provided with a notch 10n on one side surface 10m-1 in the plate thickness direction of the protruding portion 10m when viewed from the side surface. The shape of the one side surface 10m-1 where 10z is located is different by providing a flat surface without providing a notch, and clearly shows that it is the insertion hole 10y. Thereby, it becomes possible for the operator to securely fix the wire group W using the band insertion hole 10y without accidentally passing the fastening band 20 through the lightening hole 10z.

  Further, by providing the notch 10n on one side 10m-1, the fastening band 20 is exposed to the outside at an early stage from the start of insertion compared to the case where the fastening band 20 is inserted over the entire length in the height direction of the protrusion 10m. Therefore, the band fastening workability can be improved. Furthermore, since the notch 10n is provided only on one side surface 10m-1 of the protruding portion 10m and the other side surface 10m-2 is flat without providing a notch, it can be used as a contact plate for the fastening band 20.

The fastening band 20 inserted into the insertion holes 10x and 10y is a general-purpose product, and as shown in FIG. 6, a band portion provided with locking teeth 20e from a main body portion 20d having a through hole 20c projecting a locking piece 20b. 20a protrudes, the band portion 20a is inserted into the insertion hole 10 x, 10 y, is passed through the through hole 20c after wound around the wire group W, locking the locking teeth 20e of the band portion 20a to the engaging piece 20b It is something to be made.

  On the other hand, an interference prevention rib 2g is provided on the outer peripheral surface 2a-1 of the case body 2 forming the wire insertion space 5 so that the upper wire is inserted into the wire insertion space 5 when the upper cover is fitted. It does not interfere with the cover. The interference prevention rib 2g protrudes outward from the position of the outer peripheral surface of the upper cover attached to the case body 2.

Hereinafter, the wiring of the electric wire group W will be described.
The wire group W drawn out from the wire insertion port 4 of the lower cover 3 is wired in the horizontal direction along the lower surface of the bottom wall 3a of the lower cover, and the wire group W is provided in the bottom wall 3a of the lower cover. Then, it is bent upward and inserted into the electric wire insertion space 5.

  As shown in FIGS. 7 and 8, the wire group W is inserted into the substrate-type clip 21 by tape winding (T) the substrate group 21 a of the substrate-type clip 21 as shown in FIGS. 7 and 8. The clip 21b of the substrate-type clip 21 is inserted and locked in a clip hole 10g provided in the clip mounting portion 10j of the first bracket 10 adjacent to the outer surface 2a-1 of the case body peripheral wall.

The wire group W inserted into the wire insertion space 5 is branched into a T shape above the wire insertion space 5 as shown in FIG. 9, and the branch line W1 is provided in the protruding portion 10 m of the first bracket 10. 10 united with the fastening bands 20 through the x, are then bundled by a fastening band 20 inserted through the branch lines W2 to the insertion hole 10 y fixing the branch direction of the branch line W1 and W2.

  Since the wire insertion space 5 surrounding the wire group W connected to the internal circuit of the case body 2 is provided between the first bracket 10 and the outer peripheral surface 2a of the case body 2 as described above, the wire group W is It is possible to draw out the case body 2 in a compact and stable wiring state along the outer peripheral surface 2a of the case body 2, and the wire group W is surrounded by the wire insertion space 5, so that peripheral devices and body panels It is also possible to prevent the wire group W from interfering with each other.

Further, as described above, the first bracket 10 is provided with the protruding portion 10m in the T-shaped horizontal axis direction corresponding to the T-shaped branching direction of the drawn wire group W, and the protruding portion 10m is provided for each of the branch lines W1 and W2. insertion hole 10x of the fastening band 20 for fastening, by providing a 10y on the left and right sides, a branch line W1 into the insertion hole 10 x, simply bundling fixed by inserting each fastening band W2 to the insertion hole 10 y The branch direction of the branch lines W1 and W2 can be fixed. Further, the branch lines W1 and W2 can be stabilized by binding and fixing the branch lines W1 and W2 to the protruding portion 10m.
That is, since the first bracket 10 can have a protector function for fixing the wiring directions of the branch lines W1 and W2, a protector that has been conventionally attached in the vicinity of the electrical junction box 1 is not required, and the number of parts, work Man-hours can be reduced and space can be saved.
The present invention is not limited to this embodiment. For example, even if the first, second, and third brackets are integrally projected from the case body 2, the same effect as the present embodiment is obtained. It is done.

It is the perspective view which looked at the electrical junction box concerning this embodiment of the present invention from the upper part. It is the perspective view which looked at the electrical junction box from the lower part. It is a top view of an electrical junction box. The 1st bracket is shown, (A) A top view and (B) are perspective views. (A) is a perspective view of a lock claw, (B) is a perspective view of a lock frame. It is sectional drawing of a fastening band. (A) is a front view of a substrate type clip, (B) is a side view of a substrate type clip. It is a perspective view of the state where a substrate type clip was attached to an electric wire group. It is a figure which shows the state which branched and pulled out the electric wire group in T shape, (A) is a front view, (B) is a top view. It is drawing which shows a prior art example. It is drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrical junction box 2 Case main body 2a Perimeter wall 2b, 2c, 2d Corner | angular part 2f Lock frame 2g Interference prevention rib 3 Lower cover 3a Perimeter wall 3b Bottom wall 4 Electric wire insertion port 5 Electric wire insertion space 10 1st bracket 10a, 10b Fitting surface 10c Lock part 10f Bolt hole 10j Clip mounting part 10g Clip hole 10m Projection part 10x, 10y Fastening band insertion hole 10A Case connection part 10B Car body fixing part 11 Second bracket 12 Third bracket 20 Fastening band 21 Board type clip W Electric wire group

Claims (5)

A vehicle-mounted electrical junction box fixed to the vehicle body via a bracket protruding from the outer surface of the case,
The bracket is provided with an opening for inserting an electric wire in a base portion serving as a case connecting portion, and surrounds three sides of the electric wire insertion space with two orthogonal sides of the opening and the outer surface of the case, and the base portion A vertical electric wire insertion space that protrudes from the outer peripheral wall of the case with a space therebetween and surrounds the electric wire group passing through the opening between the vehicle fixing portion and the outer peripheral wall of the case. And a projecting portion in the lateral direction is provided on the upper portion of the vehicle body fixing portion , and the fastening unit surrounds the electric wire group that is inserted into the electric wire insertion space and drawn out of the case, and binds the electric wire group. electrical connection box for use in vehicles, characterized in that are only set the band insertion holes of. A group of electric wires that are inserted through the electric wire insertion space and drawn out of the case are branched and wired in different directions, and the protruding portion of the bracket protrudes corresponding to the direction of the branch line, and the protruding portion is provided for each branch line. The in-vehicle electrical junction box according to claim 1, wherein a plurality of insertion holes of the fastening band to be fastened are provided.   The electric wire group inserted into the electric wire insertion space branches in a T shape, the electric wire insertion space is at a position corresponding to the vertical axis portion of the T shape, and the protrusion provided on the bracket extends in the horizontal axis direction of the T shape. The in-vehicle electrical connection box according to claim 2, wherein the fastening band is provided with insertion holes on both sides of the horizontal axis. Projecting lock coupling bracket detachably in at least one position of the corner portion of the case exterior surface, or integrally 請 Motomeko are projected 1 to claim 3 wherein the bracket from the case outer surface The in-vehicle electrical junction box according to any one of the above.   An interference preventing rib is provided on the outer surface of the case forming the electric wire insertion space, and the electric wire group passing through the electric wire insertion space is not interfered with the fitting of the upper cover to the outer surface of the case. The in-vehicle electrical junction box according to claim 4.

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