JPH1084618A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To store a sub wire harness in compact. SOLUTION: In an electric junction box wherein one terminal of the sub wire harness 14 is inserted to a junction block 11 and the other connectors 12, 13 are fixed, a plurality of hooks 31, 35 are alternately provided in the junction block 11 and the sub wire harness 14 is provided along the hooks 31, 35. The hooks 31, 35 are provided in the junction block body 2 and bottom cover 3 of the junction block and the sub wire harness 14 is arranged along the bottom cover 3. The inserting holes 8, 23 for the connector 9 of the connector block 10 are formed in the junction block 11 and the sub wire harness 14 is arranged swerving the inserting holes 8, 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric junction box for routing and housing a sub-wire harness along a hook.

[0002]

2. Description of the Related Art FIG. 7 shows an electric junction box described as a conventional example in JP-A-6-233434. The electric connection box 65 includes a junction block (J / B) 67 having various connectors 66, a fuse block 69 also having a connector 68, and a J / B 67.
Connector 66 and fuse block 69 connector 68
And a sub-wire harness 70 connecting the J / B6
7 and a lower case 71 that accommodates the fuse block 69 in parallel, and an upper case 72 joined to the lower case 71. The sub-wire harness 70 is provided at both ends of the electric wire 73 with a connector 7 connected to each of the connectors 66 and 68.
4,75.

[0003]

However, in the above-mentioned conventional structure, the J / B 67 for the lower case 71 is not provided.
When assembling the fuse block 69 or the upper case 72, the electric wire 73 of the sub-wire harness 70 gets in the way or is pinched, or when the upper case 72 is removed from the vehicle assembly line, the electric wire 73 is connected to peripheral accessories. There was a concern that they would be pinched or interfered. Further, since the sub-wire harness 70 protrudes in the height direction, there is a concern that the electric connection box 65 is enlarged in the height direction.

[0004] In view of the above, the present invention provides an electric connection box which enables smooth assembly without interference of the sub-wire harness and prevents enlargement due to the sub-wire harness. Aim.

[0005]

In order to achieve the above object, the present invention provides an electric junction box in which one terminal of a sub-wire harness is inserted into a junction block and the other connector is fixed. A plurality of hooks are provided alternately on the sub-wire harness and the sub-wire harness is routed along the hooks. A structure is also possible in which the hook portion is provided on a junction block main body and a junction block bottom cover, and the sub-wire harness is routed along the junction block bottom cover. In addition, a structure is also effective in which an insertion hole for the connector of the connector block is formed in the junction block, and the sub-wire harness is routed avoiding the insertion hole.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view of each component of the electric junction box according to the present invention as viewed from the back side. The electric connection box 1 includes a junction block main body (J / B main body) 2 made of a synthetic resin, and a junction block bottom cover (J / B) made of a synthetic resin fitted to the bottom of the J / B main body 2.
A B-bottom cover) 3 and a sub-wire harness 14 having a plurality of electric wires with terminals 6 and 7 inserted into the J / B main body 2 through the long hole 4 and the notch hole 5 of the J / B bottom cover 3. The J / B
A connector block (relay block) 1 having a plurality of connectors 9 to be inserted into the J / B main body 2 from the insertion holes 8 of the bottom cover 3 and being united with the J / B main body 2 in the overlapping direction.
0 is included. The J / B main body 2 and the J / B bottom cover 3 constitute a junction block (J / B) 11 (FIG. 2).

The sub-wire harness 14 includes two connectors 12 and 13 and the plurality of electric wires with terminals 6 and 7 derived from the connectors 12 and 13. Male terminals 15 to female terminals 16 are attached to the ends of electric wires 6 and 7 with terminals.
Are connected by crimping. The male terminals 15 of each electric wire 6 led out from one connector 12 are arranged along the longitudinal direction of the J / B main body 2. The female terminals 16 of the respective electric wires 7 led out from the other connector 13 are arranged in a direction orthogonal to the longitudinal direction of the J / B main body 2. In each of the connectors 12 and 13, a terminal (not shown) following the base end of the electric wires 6 and 7 is accommodated. The connectors 12 and 13 are connected to connectors 18 and 19 of a sub-wire harness 17 on the connector block 10 side.

The J / B main body 2 has insertion holes 21, which are formed in the bottom wall 20 for the terminals 15, 16 of the sub-wire harness 14.
22 and insertion holes 23 for the plurality of connectors 9 of the connector block 10. Insertion hole 21 is bottom wall 20
Are provided in parallel in the J / B longitudinal direction on one side. The insertion holes 22 are provided at the front end of the bottom wall 20 in parallel in the direction orthogonal to the J / B longitudinal direction.

At the rear end of the J / B main body 2, a housing portion (housing room) 24 for the connectors 12, 13 of the sub-wire harness 14 is formed. Guide rails 28 for the slide engagement portions 26 of the connectors 12 and 13 and lock arms (not shown) for the lock projections 27 are provided on inner walls 25 on both sides of the housing portion 24.

A frame-like wall 29 is formed to protrude one step higher around the bottom wall 20 and the accommodation portion 24 of the J / B main body 2, and an electric wire accommodation portion 30 is formed inside the frame-like wall 29. Then, from the front end portion of the frame-shaped wall 29 toward the electric wire accommodating portion 30, substantially J
A plurality of hook portions 31 having a letter shape are formed so as to protrude horizontally. The hook portion 31 has a hook-shaped protrusion 32 toward the bottom wall 20 at the tip. In this example, two hook portions 31 are provided on the side where the terminal insertion holes 21 are located. These two hook portions 31, 31 are arranged at positions that substantially divide the length of the bottom wall 20 in the longitudinal direction into three equal parts.

On the other hand, the J / B bottom cover 3 has
In addition, the rectangular notch hole 5 for insertion into the male terminal 15 and the insertion hole 4 into the female terminal 16 are formed, and a plurality (two in this example) of substantially notches are formed from the side end of the notch hole 5. A J-shaped or L-shaped hook portion 35 is formed to protrude outward. The hook portion 35 includes a support portion 36 vertically projecting from the substrate portion 34 and a support portion 3 above the notch hole 5.
6 and hook pieces 37 extending horizontally outward. A hook-shaped protrusion 38 facing the bottom wall 20 of the J / B main body 2 is formed at the tip of the hook piece 37.

The hook portions 31 of the J / B main body 2 and the hook portions 35 of the J / B bottom cover 3 are alternately arranged. The position and size of each of the hook portions 31 and 35 are set in accordance with the convergent diameter or width S (FIG. 2) of the sub-wire harness 14. Each of the above hook portions 31, 35
Is an essential part of this embodiment.

The base 34 of the J / B bottom cover 3 has an insertion hole 8 for each connector 9 of the connector block 10 and a case 40 in addition to the long hole 4 and the cutout 5.
Further, a frame-shaped portion 41 is formed around the substrate portion 34, and the frame-shaped portion 41 is fitted to the frame-shaped wall 29 of the J / B main body 2.

A terminal (not shown) is inserted into each connector 9 on the connector block 10 side, and an electric wire 43 following the terminal is connected to the wire harness 4 together with the sub-wire harness 17.
4. The manufacture of the sub-wire harness 14 on the J / B 11 side and the terminal insertion, and the manufacture of the wire harness 44 on the connector block 10 side and the terminal insertion can be performed in different places.

After the J / B bottom cover 3 is fitted to the J / B body 2 in FIG.
6 is inserted into the J / B main body 2 through the cutout hole 5 or the long hole 4.
Next, as shown in FIGS.
4 is connected to the hook 31 of the J / B main body 2 and the J / B.
It is routed along the hook portion 35 of the B bottom cover 3 and stored between the hook portions 31 and 35. The positions of the electric wires 15 and 16, that is, the sub-wire harness 14, are regulated between the hook portions 31 and 35, and are firmly held.

In the example shown in FIG. 2, the electric wire 7 on the connector 13 side is bent in a substantially L-shape or a U-shape along the hook portions 31 and 35 and routed. The sub-wire harness 14 on the connector 12 side is mainly bent at a right angle on the base end side and is arranged in a substantially L-shape.

As shown in FIG. 3, the sub-wire harness 14
/ B body 2, the support portion 36 of the hook portion 35 of the J / B bottom cover 3, the hook piece 37, the hook portion 31, and the housing space (housing portion) 30 surrounded by the substrate portion 34. To position. Further, the tip (projection 38) of the hook 35 and the frame-shaped wall 2
9 is formed with a gap 46 through which the electric wires 6 and 7 can be inserted. Further, as shown in FIGS.
35 is wrapped in the protruding direction, so that both hook portions 3
There is no need to worry that the wires 6 and 7 come off from the gap between 1 and 35.

The wire harness 44 is connected to the hook portions 31 and 35.
2 and the sub-wire harness 14 as shown in FIG.
The connectors 12 and 13 are inserted and engaged in the accommodation portion 24. The connectors 12 and 13 are locked and fixed in the accommodation portion 24. Thereafter, the connectors 18 and 1 of the sub-wire harness 17 on the connector block 10 side are connected to the connectors 12 and 13.
9 are connected, and then connector block 10 is connected to J / B1.
1 are united in the direction of superposition.

Since the sub-wire harness 14 on the J / B 11 side is covered with the hook portions 31 and 35 and its position is regulated and firmly held, the sub-wire harness wiring space in the J / B 11 is saved. . At the same time, when the connector block 10 is assembled to the J / B 11, the electric wires 6 and 7 do not hinder the assembly, so that the assemblability is improved. Also, the terminals 15, 16 of the sub-wire harness 14
After inserting (FIG. 1) into the J / B 11, the electric wires 6 and 7 are routed along the hook portions 31 and 35 so that the hook portions 3 are formed.
1, 35 serve as guides for the electric wires 6, 7, facilitating the assembling work of the sub-wire harness, and improving the assembling workability. In addition, the electric wires 6 and 7 and the sub-wire harness 14 are also used in the text as having the same meaning.

FIG. 5 is a view of the J / B 11 as viewed from the front side. A fusible link (F / L) 47 for power supply, a plurality of F / Ls 48 and a fuse 49 are mounted on the J / B body 2. You. A bus bar 50 for joint connection is mounted in the J / B main body 2, and one terminal of each of a power supply F / L 47, a plurality of F / Ls 48, and a fuse 49 is connected to the bus bar 50. The other terminal of the power supply F / L 47 is connected to a power supply line (not shown), and the other terminals of the plurality of F / Ls 48 and the fuse 49 are connected to the sub-wire harness 1.
4 is connected. In FIG. 1, reference numeral 51 denotes a bus bar insertion groove.

The connector block 10 shown in FIG.
B11 is mounted on the lower case 52 in FIG. Connector block 10 and J / B11
And the slide engagement portions 53 and 54 and the lock arm 55
Are formed, and the lower case 52 has a slide engagement portion 53,
A guide rail 56 with respect to 54 and a locking projection 57 with respect to the lock arm 55 are formed. In FIG. 1, each connector 9 of the connector block 10 is inserted into the J / B main body 2 through the J / B bottom cover 3 and the respective insertion holes 8, 23 of the J / B main body 2, and the J / B main body 2 of FIG. To form a connector for a relay (not shown).

The bracket 59 of the lower case 52 is assembled to a vehicle body (not shown) on a vehicle assembly line, and the connector block 10 is mounted in the lower case 52.
/ B11 is mounted. Therefore, the connector block 10 and the J / B 11 can be manufactured in separate processes and delivered separately. The electric wires with terminals 43, 6, and 7 can be inserted into the connector block 10 and the J / B 11 in separate steps, thereby improving the manufacturing efficiency of the electric junction box 1.

[0023]

As described above, according to the present invention, since the sub-wire harness is routed between the hook portions and is compactly stored, the junction block and the sub-wire harness can be formed without considering the protrusion of the sub-wire harness. The lower case for the junction block can be designed to be thin, and the electric junction box can be downsized. Further, in the work of arranging the sub-wire harness, the hook part plays a role of a guide jig, so that the work can be smoothly and easily performed. Further, when assembling the junction block and the connector block or assembling to a vehicle, the sub-wire harness is not bitten, and there is no fear of causing damage to the sub-wire harness. In addition, since the sub-wire harness does not interfere, the connector of the connector block can be smoothly and reliably inserted into the junction block, and assembling workability is improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an electric junction box according to the present invention.

FIG. 2 is an exploded perspective view showing a state where a connector block is combined with a junction block.

FIG. 3A shows a wiring state of a sub-wire harness in FIG.
It is -A sectional drawing.

FIG. 4 is a sectional view taken along the line BB of FIG. 2;

FIG. 5 is a perspective view showing a junction block.

FIG. 6 is a perspective view showing a lower case.

FIG. 7 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

1 Electrical junction box 2 Junction block body (J / B body) 3 Junction block bottom cover (J / B
Bottom cover) 8,23 Insertion hole 9 Connector 10 Connector block 11 Junction block (J / B) 12,13 Connector 14 Sub-wire harness 15,16 Terminal 31,35 Hook

Claims (3)

[Claims] 1. An electric connection box for inserting one terminal of a sub-wire harness into a junction block and fixing the other connector, wherein a plurality of hooks are alternately provided on the junction block, and the sub-wire harness is connected to the junction block. An electric connection box, which is arranged along a hook portion. 2. The junction block according to claim 1, wherein the hook portion is provided on a junction block main body and a junction block bottom cover, and the sub-wire harness is routed along the junction block bottom cover. Electrical junction box. 3. The electrical connection according to claim 1, wherein an insertion hole for the connector of the connector block is formed in the junction block, and the sub-wire harness is routed so as to avoid the insertion hole. box.