JP2000013956A - Electric junction box and drawing-out tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily distinguish wiring harnesses corresponding to a plurality of electrical component blocks housed in an electric junction box. SOLUTION: A grommet 13, through which wiring harnesses W1, W2 and W3 extended respectively from a plurality of electrical component blocks housed in an electric junction box, are drawn out has a 1st grommet section 31 of which a bottom part 31b consists and a 2nd grommet 32, on which a ceiling part 32b covering the bottom part 31b is formed. A bottom wall 33 is formed on the tip of the bottom part 31b. Two partition walls 34 and 35 are formed on the 1st grommet section in parallel with the bottom wall 33. The wiring harnesses W3, W2 and W1 are laid separately between the bottom wall 33 and the partition wall 34, between the partition wall 34 and the partition wall 35 and on the partition wall 35, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connection box installed in an engine room of a vehicle such as an automobile, and more particularly to an electric connection box in which a plurality of electric component blocks are accommodated. .

[0002]

2. Description of the Related Art As a conventional electric connection box, for example, an electric connection box having a structure shown in FIG. 6 is known. The electric connection box 50 includes a lower cover 51 having an open upper portion, a plurality (three) of electric component blocks 54, 55, 56 mounted inside the lower cover 51, and an upper cover 52 covering the lower cover 51 from above. Have. Wire harnesses W extending from electrical component blocks 54, 55, 56, respectively
1, W2 and W3 are openings 5 formed in the lower cover 51.
1a is led out of the lower cover 51. The electrical connection of the electrical connection box 51 is completed by connecting the wire harnesses W1, W2, and W3 to a predetermined external circuit via a connector (not shown).

[0003]

By the way, the wire harness W extending from each of the electrical component blocks 54, 55, 56
1, W2 and W3 are led out of the opening 51a in a cluttered state without being collected. Therefore, the wire harnesses W1, W derived from the opening 51a
In some cases, it is not possible to easily distinguish which of the electrical component blocks 54, 55, and 56 the wire harness corresponds to. Therefore, the electrical component block 5
4, 55, 56 and the wiring harnesses W1, W2, W3 cannot be distinguished from each other, so that the subsequent work cannot be performed smoothly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an electric connection which can easily distinguish a wire harness corresponding to a plurality of electric component blocks housed in an electric junction box. The object of the present invention is to provide a box and a delivery tool.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of electric component blocks are housed inside, and a wire harness extending from each of the electric component blocks is led out. In the electrical junction box having an opening, the gist is that the opening is partitioned for each of the wire harnesses.

According to a second aspect of the present invention, in the electrical junction box according to the first aspect, a lead-out member having a partition wall for separating each of the wire harnesses is attached to the opening. It is assumed that.

According to a third aspect of the present invention, in the electrical junction box according to the second aspect, the outlet member is provided with a closing portion for closing the opening.

According to a fourth aspect of the present invention, in the electrical junction box according to the third aspect, a converging portion is provided on the lead-out member for leading all the wire harnesses in a bundled state. Is what you do.

According to a fifth aspect of the present invention, a plurality of electric component blocks are accommodated in the inside, and a wiring harness extending from each of the electric component blocks is attached to the opening of the electric connection box having an opening for leading out to the outside. Derived tool,
The gist is that a partition wall for separating each of the wire harnesses led out is provided.

According to a sixth aspect of the present invention, there is provided the lead-out device according to the fifth aspect, wherein a closing portion for closing the opening is provided. According to a seventh aspect of the invention, there is provided the lead-out device according to the sixth aspect, wherein the lead-out device is provided with a converging portion that leads out all the wire harnesses in a bundled state. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in an electric junction box disposed in an engine room of an automobile will be described below with reference to FIGS.

As shown in FIG. 1, this electric junction box 1
Reference numeral 0 denotes a lower cover 11 having an open upper portion, and a plurality of (three in this embodiment) junction blocks 14, fuse link blocks 15, and relay blocks 16 as electric component blocks are provided inside the lower cover 11. Is accommodated. Engagement recesses 24, 25, 26 for mounting the blocks 14, 15, 16 are formed on the inner wall of the electric connection box 11. Locking recess 2
Locking claws 14a, 15a, 16a formed on the blocks 14, 15, 16 are locked to the blocks 4, 15, 26, respectively, so that the blocks 14, 15, 16 are held inside the electric connection box 11. Is done.

Wire harnesses W1, W2, and W3 extend from the blocks 14, 15, and 16, respectively. The lower cover 11 has the wire harness W
An opening 11a for leading out 1, W2 and W3 to the outside is formed. The above wire harness W1, W2, W3
Is led out through a grommet 13 attached to the opening 11a.

The grommet 13 has a plate portion 13a as a closing portion for closing the opening 11a and a converging portion 13b for leading out the wire harnesses W1, W2, W3. Mounting part 2 formed on electric connection box 11
The grommet 13 is attached to the opening 11a of the lower case 11 by locking the plate portion 13a to the third case 3. Also,
The wire harnesses W1, W2, and W3 are connected to the
It is led to the outside in a bundled state at b.

The electric connection box 10 is provided with an upper cover 12 which covers the upper part of the lower cover 11, and the lower cover 11 is attached by attaching the upper cover 12.
Is covered above.

The wire harnesses W1, W2, W
By connecting 3 to a predetermined external circuit via a connector (not shown), the electrical connection of the electrical connection box 10 is completed. Next, the structure of the grommet 13 in the present embodiment will be described in detail with reference to FIGS. Note that FIG.
3 shows an exploded perspective view of the grommet 13, and FIG. 3 shows a cross-sectional view of the grommet 13.

As shown in FIG. 2, the grommet 13 includes a first grommet piece 31 forming a bottom 31b,
It comprises a second grommet piece 32 having a ceiling 32b covering 1b. A coupling claw 31 for coupling to the second grommet piece 32 is provided on the first grommet piece 31.
a on the other hand, the second grommet piece 2 is formed with a coupling portion 32a corresponding to the coupling claw portion 31a. The first and second grommet pieces 3 are joined by joining the joining claws 31a and the joining portions 32a.
1 and 32 constitute the grommet 13. The converging portion 13b is formed by the bottom 31b and the ceiling 32b.

A bottom wall 33 is formed at the tip of the bottom 31b. The first grommet piece 31 has two partition walls 34 and 35 formed in parallel along the bottom wall 33.

In the first grommet piece 31, the wire harness W 3 is located between the bottom wall 33 and the partition wall 34, and the wire harness W 2 is located in the partition wall 3.
4, between the partition wall 35 and the wire harness W1.
Are separately inserted on the partition wall 35. In this state, the first and second grommet pieces 31, 32 are connected. As described above, the wire harnesses W1, W2, W3 extending from the blocks 14, 15, 16 are separated into individual pieces and led out. Therefore, it can be easily distinguished to which block 14, 15, 16 each wire harness corresponds.

Further, since the wire harnesses W1, W2 and W3 are separated into individual parts, the wire harnesses W1, W2 and W3 are separated.
Also, it is possible to prevent the plurality of wires constituting W3 from being separated and entangled with each other.

As described in detail above, according to the present embodiment, the following effects can be obtained. (1) Each wire harness has which block 14,
It can be easily distinguished whether they correspond to Nos. 15 and 16. Therefore, the subsequent work can proceed smoothly.

Further, such an effect can be obtained by the partition walls 34 and 35 having a very simple structure. (2) It is possible to prevent a plurality of electric wires constituting the wire harnesses W1, W2, W3 from being separated and entangled with each other.

(3) The opening 11a can be closed by the grommet 13 (plate 13a). Therefore, the wire harness W derived from the opening 11a
The positions of W1, W2, and W3 can be restricted to the closed range of the opening 11a. Thereby, the swing of the wire harnesses W1, W2, W3 can be reduced.

(4) The grommet 13 (converging portion 13b) can be bundled so as to cover the closed opening 11a. Thereby, invasion of water from the opening 11a can be suppressed. And the electric connection box 10
Can be improved in waterproofness.

The present embodiment is not limited to the above, but may be modified as follows. In the present embodiment, the partition walls 34 and 35 are formed parallel to the bottom wall 33. On the other hand, the bottom wall 33
For example, the space between the partition wall 34 and the space between the partition wall 34 and the partition wall 35 may be formed so as to become narrower toward the outside. Further, as shown in FIG. 4, partition walls 44 and 45 may be formed such that openings for inserting the wire harnesses W1, W2 and W3 are alternately formed. Further, as shown in FIG. 5, the wire harnesses W1, W
2, W3 may be formed into a substantially cylindrical partition wall 46, 47, 48 that is partially open. In this case, the wire harnesses W1, W2, W3 can be firmly supported.

In the present embodiment, the bottom wall 33
Are formed in parallel with each other, and the wire harnesses W1, W2, W3 are arranged side by side in the vertical direction and separated.
For example, a partition wall may be formed vertically with respect to the bottom wall 33, and the wire harnesses W1, W2, and W3 may be horizontally arranged and separated.

In this embodiment, the case where the wire harnesses W1, W2, and W3 corresponding to the three electrical component blocks of the junction block 14, the fuse link block 15, and the relay block 16 are respectively separated has been described. Any number of partition walls can be used as long as the partition walls separate the wiring harnesses extending from the respective electrical component blocks.

In the present embodiment, the lower cover 1
The description has been given of the case where only one opening 11a is formed in the first grommet 13 and the grommet 13 is attached to the opening 11a. On the other hand, there may be a plurality of openings formed in the lower cover and a plurality of grommets attached to the openings. In this case, a similar partition wall may be provided on at least one of the grommets.

In the present embodiment, the convergence unit 13b
(The bottom 31b and the ceiling 32b) are formed, but this is not necessarily required. In the present embodiment, the opening 11a is closed by the second grommet piece 32 of the grommet 13, but the second grommet 32 is not necessarily required.

In this embodiment, the grommet 1
3 and the same grommet 13 (first grommet piece 31)
The wire harnesses W1, W2, W3 are separated by the partition walls 34, 35 formed in the above. On the other hand, each wire harness W is located directly inside the lower cover 11 at a position corresponding to the opening 11a.
A partition wall for separating 1, W2, and W3 may be integrally formed.

[0031]

As described above in detail, according to the first aspect of the present invention, how each wire harness is led out to the outside is determined in advance, so that each electrical harness is controlled by each wire harness. Can be easily distinguished. Further, it is possible to prevent the plurality of electric wires constituting the wire harness from being separated and entangled with each other.

According to the second and fifth aspects of the present invention, the wire harness can be separated and led to the outside by a lead-out member or a lead-out tool having a partition wall having a very simple structure.

According to the third and sixth aspects of the present invention, the position of the wire harness derived from the opening can be restricted to a range where the opening is closed, and the swing of the wire harness can be reduced.

According to the fourth and seventh aspects of the invention, the wire harness is bundled by the converging portion so as to cover, for example, the wire harness, thereby preventing water from entering from the converging portion and improving the waterproofness of the electric junction box. can do.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an electric junction box to which the present invention is applied.

FIG. 2 is an exploded perspective view showing the grommet and the like of the embodiment.

FIG. 3 is a sectional view showing the grommet and the like according to the embodiment.

FIG. 4 is an exploded perspective view showing another configuration example of the embodiment.

FIG. 5 is an exploded perspective view showing another configuration example of the embodiment.

FIG. 6 is an exploded perspective view showing a conventional electric junction box.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Electric junction box, 11a ... Opening part, 13 ... Grommet, 13a ... Plate part, 13b ... Converging part, 14 ... Junction block, 15 ... Fuse link block, 16 ...
Relay block, 31 ... first grommet piece, 34, 3
5, 44, 45, 46, 47, 48 ... partition walls, W1, W
2, W3 ... wire harness.

Claims (7)

[Claims] 1. A plurality of electrical component blocks are accommodated inside,
An electric connection box provided with an opening for leading a wire harness extending from each of the electrical component blocks to the outside, wherein the opening is partitioned for each of the wire harnesses. 2. The electrical junction box according to claim 1, wherein a lead-out member provided with a partition wall for separating the respective wire harnesses is attached to the opening. 3. The electrical junction box according to claim 2, wherein the lead-out member is provided with a closing portion that closes the opening. 4. The electrical junction box according to claim 3, wherein the lead-out member is provided with a converging portion for leading all the wire harnesses in a bundled state. 5. A plurality of electrical component blocks are housed therein.
A lead-out tool attached to the opening of an electric connection box provided with an opening for leading out a wire harness extending from each of the electrical component blocks to the outside, for separating each of the wire harnesses leading out. Leader with partition wall. 6. The lead-out device according to claim 5, wherein a closing portion for closing the opening is provided. 7. The deriving device according to claim 6, wherein the deriving device is provided with a converging portion for deriving the wire harness in a bundled state.