JP3374783B2 - Electrical junction box - Google Patents

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 mounted on, for example, an automobile, and more specifically, a harness fixing spatula for fixing a wire harness drawn out from the inside of the box to the outside of the box and regulating the pulling direction. The present invention relates to an electric connection box provided.

[0002]

2. Description of the Related Art Generally, a wire harness is pulled out from an electric connection box mounted on an automobile. This wire harness is for electrically connecting various electric components housed in the box and various actuators arranged in the vehicle. Usually, various actuators are arranged at various locations, and therefore the wire harness may be pulled out in different directions.

Conventionally, as an example of such an electric connection box,
There is an electric junction box 51 having a structure as shown in FIG. Two electric component mounting blocks 53 and 54 are accommodated in a case 52 of the electric connection box 51. Wall portion 55a on the side wall 55 of the case 52 having a rectangular parallelepiped shape,
Notches 56 are provided in each 55b. Then, the wire harness 57 connected to the block 53 is cut from the notch 56 on the wall 55a side to the case 52.
Have been pulled out of. Further, the wire harness 58 connected to the block 54 is drawn out of the case 52 from the notch 56 on the wall 55b side. That is, the wire harnesses 57 and 58 are drawn out of the case 52 through the individual cutouts 56a and 56b.

[0004]

However, when the side wall 55 is provided with the notch 56, the strength of the case 52 may be reduced and the side wall 55 may be deformed. Then, this tendency becomes more remarkable as the number of the cutout portions 56 increases. Therefore, if a plurality of notches 56 are provided on the side wall 55 in order to draw out the wire harnesses 57 and 58 in different directions, the strength of the case 52 will be reduced.

From this point of view, it is also conceivable to pull out the wire harnesses 57, 58 from the one notch 56 to the outside of the case 52 and bend the wire harnesses 57, 58 in a desired direction for wiring.

However, if the wire harnesses 57, 58 are bent and the pull-out direction is forcibly restricted, the wire harnesses 57, 58 are pressed against the inner wall surface of the notch 56, and the wire harnesses 57, 58 are broken. There is a risk. Therefore, it is not preferable to draw the wire harnesses 57 and 58 out of the case 52 in this manner.

The present invention has been made in view of the above problems, and an object thereof is to provide an electric junction box capable of preventing the strength of a case from decreasing.

[0008]

In order to solve the above-mentioned problems, in the invention described in claim 1, a case having a harness lead-out portion at an opening edge, a wire harness and a wire harness extending for fixing the same are provided. A plurality of electrical component mounting blocks each having a harness fixing spatula, when the electrical component mounting block is housed in the case, the harness fixing spatula is arranged in the harness drawer, and the wire harness In an electrical connection box that is pulled out of the box via the harness pull-out portion, two or more of the harness fixing wrasse are vertically stacked on the harness pull-out portion with their extending directions forming a predetermined angle with each other. The point is that they are arranged.

According to a second aspect of the present invention, in the electric connection box according to the first aspect, the harness fixing wrasse has a mutual position when the harness fixing wrench is arranged in the harness withdrawing portion. The gist is that a positioning structure for holding the relationship is provided.

According to a third aspect of the present invention, the harness lead-out portion is a cutout portion provided at an opening edge of a corner portion of the case. Hereinafter, the "action" of the present invention will be described.

According to the first aspect of the present invention, a plurality of harness fixing wrasse for fixing the wire harness are arranged on the harness withdrawing portion vertically with the extending directions of the wrench forming a predetermined angle with each other. I am trying to do it. Therefore, it is possible to pull out a plurality of wire harnesses from one harness pulling-out portion in different directions. Therefore, the case may be provided with the minimum necessary harness pull-out portion. Therefore, it is possible to prevent the strength of the case from decreasing.

According to the second aspect of the present invention, when the harness fixing spars are arranged in the harness drawing portion, the mutual positioning relationship between the harness fixing spars is maintained by the positioning structure. Therefore, the angle formed by the extending directions of the harness fixing spars is reliably maintained. Therefore, the angle formed by the wire harnesses can be reliably maintained.
Therefore, the pull-out direction of the wire harness can be reliably regulated.

According to the third aspect of the present invention, the harness lead-out portion is a notch portion, and the notch portion is provided at the corner portion of the case. Therefore, each wire harness can be easily pulled out in different directions.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is embodied in a vehicle electrical junction box will be described in detail below with reference to FIGS.

As shown in FIG. 1, the electrical junction box 11 has a substantially rectangular parallelepiped shape and a box-shaped lower case (hereinafter referred to as "case") 12 having an open top surface. The electric junction box 11 is mounted in the vehicle with an upper case (not shown) attached to the upper part of the case 12.

As also shown in FIG. 2, a notch portion 14 as a harness lead-out portion is provided at an opening edge of a corner portion of the side wall 13 of the case 12 between the wall portion 13a and the wall portion 13b.
Is provided. As shown in FIG. 3, a distance W1 between the corner portion of the cutout portion 14 and the inner side surface of the wall portion 13a is set to be slightly wider than a width W11 of a first fixed spatula 21 described later. . In addition, the notch 14
A distance W2 between the corner portion and the inner side surface on the side of the wall portion 13b is set to be slightly wider than a width W22 of a second fixed spatula 22 described later.

In the case 12, two relay blocks 15 and 16 as electric component mounting blocks are housed. Each of the relay blocks 15 and 16 has a substantially rectangular parallelepiped shape, and a plurality of relay mounting portions 17 (two in this embodiment) on which relays (not shown) can be mounted are formed on the upper surface thereof. A plurality of electric wires are connected to the back side of these relay mounting parts 17 (not shown). Then, wire harnesses 18 and 19 composed of a bundle of these electric wires are drawn out from below the relay blocks 15 and 16.

On the side surface 15a of the relay block 15, a first harness fixing spatula (hereinafter referred to as "first fixing spatula") 21 as a fixing member is extended. The first fixed spatula 21 has a substantially rectangular shape in a plan view and is formed perpendicular to the side surface 15a. The wire harness 18 is
It is fixed to the lower surface of the first fixed spatula 21 and is drawn out along the extending direction of the spatula 21.

On the other hand, on the side surface 16a of the relay block 16, a second harness fixing spatula (hereinafter referred to as "second fixing spatula") 22 as a fixing member is extended. The second fixed spatula 22 includes an upper plate 23 having a rectangular shape in a plan view, and a pair of wall portions 24 and 25 extending downward from both ends of the upper plate 23. The second fixed spatula 22 is formed perpendicularly to the side surface 16a, like the first fixed spatula 21. The wire harness 19 is fixed to the lower surface of the upper plate 23 of the second fixing spatula 22, is arranged between the wall portions 24 and 25, and is drawn out along the extending direction of the spatula 22.

As shown in FIG. 3, the side surface 15a is
When the relay blocks 15 and 16 are housed in the case 12, they face the relay block 16. The side surface 16a faces a direction orthogonal to the direction of the side surface 15a when the relay blocks 15 and 16 are housed in the case 12. Therefore, each relay block 15, 16
When the housing is housed in the case 12, each fixed spatula 21,
22 extends at right angles (90 °) to each other. Therefore, the angle formed by the pull-out directions of the wire harnesses 18, 19 is also a right angle (90 °).

By the way, near the tip of the first fixed spatula 21, a projecting piece 21a is formed which projects upward. Specifically, this protrusion 21a is shown in FIGS.
As shown in (b), when the relay blocks 15 and 16 are housed in the case 12, the relay blocks 15 and 16 are formed at positions where they come into contact with the outer surface of the wall portion 24 of the second fixed spatula 22.

Further, near the base end portion of the wall portion 24, a protruding piece 24a which is perpendicular to the outer surface of the wall portion 24 is formed. A protrusion 25 a that is perpendicular to the outer surface of the wall 25 is formed near the tip of the wall 25. Specifically, as shown in FIGS. 3 and 4A, the protrusion 24 a contacts the inner surface of the cutout portion 14 on the wall portion 13 a side when the relay block 16 is housed in the case 12. Is formed in position. Further, the protrusion 25a is provided on the wall portion 1
It is formed at a position where it abuts on the outer surface of 3b.

Each relay block 1 configured in this way
When housing 5, 5 in the case 12, the relay block 16 is mounted after mounting the relay block 15. When the relay blocks 15 and 16 are housed in the case 12, as shown in FIG. 1 and FIG.
1 and the second fixed spatula 22 are arranged in the cutout portion 14 in a state of vertically overlapping with each other. At this time, the first fixed spatula 21 is located below and the second fixed spatula 22 is located above. Therefore, the wire harnesses 18 and 19 are also vertically overlapped with each other, and the case 1 is inserted through the notch 14.
2 is pulled out. Moreover, since the extending direction of the first fixed bellows 21 and the extending direction of the second fixed bellows 22 form a right angle, the respective wire harnesses 18, 19 are pulled out by 90 ° different directions.

The protruding piece 21a of the first fixed spatula 21 is
The outer surface of the wall portion 24 of the second fixed spatula 22 abuts. For this reason, the relative movement of the first fixed spatula 21 and the second fixed spatula 22 is restricted. Therefore, the mutual positional relationship between the fixed spars 21 and 22 is maintained. Therefore, the protrusion 21
“A” functions as a positioning structure that holds the mutual positional relationship between the fixed spars 21 and 22. Furthermore, the second fixed spatula 2
The second protruding piece 24a contacts the inner surface of the cutout portion 14 on the wall portion 13a side, and the protruding piece 25a contacts the outer surface of the wall portion 13b. Therefore, the relative movement between the case 12 and the second fixed spatula 22 is restricted. Therefore, each fixed spatula 21,22
It is possible to prevent rattling between the case and the case 12.

Therefore, according to this embodiment, the following effects can be obtained. (1) The fixed spars 21 and 22 are arranged one above the other such that the extending directions of the spars 21 and 22 are perpendicular to each other. Therefore, from one notch 14,
Each wire harness 18, 19 can be pulled out in different directions. Therefore, it is not necessary to individually provide the notch 14 for each wire harness 18, 19. Therefore, the number of notches 14 can be reduced, and the case 1
It is possible to prevent the decrease in strength of 2.

(2) Since the protruding piece 21a of the first fixed spatula 21 contacts the outer surface of the wall portion 24 of the second fixed spatula 22, the mutual positional relationship between the fixed spars 21 and 22 is maintained. Therefore, the angle formed by the extending directions of the fixed spars 21 and 22 is maintained. Each wire harness 18,
Since 19 is fixed to each fixed spatula 21 and 22,
The angle formed by the drawing directions of the wire harnesses 18 and 19 is also maintained. Therefore, each wire harness 1
The pull-out direction of 8 and 19 can be reliably regulated.

(3) The notch 14 is provided at the corner of the case 12. Therefore, the wire harnesses 18, 19 can be easily pulled out in different directions. (4) The protrusion 24a of the second fixed spatula 22 has the cutout portion 14a.
Of the wall portion 1a of the wall portion 13a of the wall portion 1
It contacts the outer surface of 3b. Therefore, the case 12 and the second
Relative movement with the fixed spatula 22 is restricted. Therefore,
It is possible to prevent rattling between the fixed spars 21 and 22 and the case 12.

(5) The protrusion 24a of the second fixed spatula 22 abuts on the inner surface of the notch 14 on the side of the wall 13a, so that the protrusion 2
The contact of 5a with the outer surface of the wall portion 13b makes it difficult for water or the like to enter from this portion. Therefore, the waterproofness of the electrical junction box 11 can be improved.

The embodiment of the present invention may be modified as follows. -In the said embodiment, the relay blocks 15 and 16 are used as an electrical equipment mounting block. However, not limited to this, a connector block, a fusible link block, or the like may be used.

The angle formed by the drawing directions of the wire harnesses 18 and 19 is not limited to 90 ° (right angle). For example, the angle may be set to 60 ° or 120 °. When changing the angle, the angle formed by the extending directions of the fixed spars 21 and 22 is changed.

In the above-described embodiment, two relay blocks 15 in the case 12 are provided as the electrical component mounting block.
It houses 16. However, not only these two relay blocks 15 and 16, but three or more relay blocks may be housed in the case 12.

In the above embodiment, the two wire harnesses 18 and 19 are only pulled out from the electric junction box 11. However, the present invention is not limited to this, and three or more wire harnesses may be pulled out from the electrical junction box 11. In this case, it is most desirable to pull out all the wire harnesses from the cutout portion 14. By doing so, the strength of the case 12 can be maintained.

In addition to the above, a cutout portion may be further provided at a portion other than the corner portion of the side wall 13, and the wire harness may be pulled out from the cutout portion. In other words, the number of cutouts may be smaller than the number of drawn wire harnesses. Even in this case, the strength of the case 12 can be maintained higher than before.

In the above embodiment, the cutout portion 14
Are provided at the corners of the case 12. But,
The present invention is not limited to this, and the side wall 13 may be provided at a position other than the corner portion.

A projection piece capable of contacting the outer surface of the wall portion 25 of the second fixed spatula 22 may be further provided on the upper surface of the first fixed spatula 21. With this configuration, the mutual positional relationship between the first fixed spatula 21 and the second fixed spatula 22 can be more reliably maintained.

The same wall portions as the wall portions 24 and 25 of the second fixed bellows 22 are provided at both ends of the first fixed bellows 21.
A projecting piece capable of contacting the outer surface of the wall portion 13a of the case 12 is provided on one wall portion, and the wall portion 13b of the cutout portion 14 is provided.
You may provide the protrusion which can contact | abut with the inner side surface of the other side in the other wall part. In this way, the first fixed spatula 21 and the case 12
Rattling between and is more regulated, each fixed spatula 21,2
It is possible to more reliably prevent rattling between the case 2 and the case 12.

Projection piece 2 provided on each fixed spatula 21, 22
At least one of 1a, 24a, and 25a may be omitted. Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the above-described embodiment will be listed below together with their effects.

(1) In the electric junction box according to claim 2 or 3, the positioning structure is provided on at least one of the harness fixing spars.
The first restricting part is to maintain the mutual positional relationship between the other harness fixing wrasse in a state of being in contact with the other harness fixing wrench. According to the invention described in this technical idea (1), the pull-out direction of the wire harness can be reliably regulated.

(2) Claims 1 to 3, technical idea (1)
In the electrical junction box according to any one of items 1 to 3, at least one of the fixed spars includes a second restriction portion that abuts a peripheral wall of the case. According to the invention described in this technical idea (2), it is possible to prevent rattling between each harness fixing spatula and the case.

(3) In the electrical junction box according to any one of claims 1 to 3 and technical ideas (1) and (2), the number of the electrical component mounting blocks, the fixed spatula, and the wire harness Are two each.

(4) Claims 1 to 3, technical idea (1)
~ In the electrical junction box according to any one of (3),
The wire harness must be fixed along the direction in which the fixing spatula extends.

(5) Claims 1 to 3, technical idea (1)
~ In the electrical junction box according to any one of (4),
The electrical component mounting block is a relay block.

[0043]

As described in detail above, according to the invention described in claim 1, it is possible to prevent the strength of the case from being lowered.

According to the second aspect of the present invention, the mutual positional relationship between the harness fixing spars can be maintained. According to the invention of claim 3, the wire harness can be easily pulled out in different directions.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an electrical junction box of the present invention.

FIG. 2 is an exploded perspective view of the electrical junction box of the same embodiment.

FIG. 3 is a plan view of the electrical junction box of the same embodiment.

4A is a partial front view of the electric junction box of the same embodiment seen from the direction of arrow A in FIG. 1, and FIG. 4B is a partial front view of the electric junction box of the same embodiment seen from the direction of arrow B of FIG. Partial side view.

FIG. 5 is a perspective view of a conventional electrical junction box.

[Explanation of symbols]

11 ... electric junction box, 12 ... lower case (case), 1
3 ... Side wall, 13a, 13b ... Wall part, 14 ... Notch part as harness lead-out part, 15, 16 ... Relay block as electrical equipment mounting block, 18, 19 ... Wire harness, 21 ... First harness fixing spatula (First fixed spatula), 21a ... Projection piece as first restricting portion, 22 ... Second
Harness fixing spatula (second fixing spatula), 24a, 25
a ... a protrusion as a second restricting portion.

Claims (3)

(57) [Claims] 1. A case having a harness lead-out portion at an opening edge, and a plurality of electrical equipment mounting blocks each having a wire harness and a harness fixing spatula extending to fix the wiring harness, and each of the electrical equipment mountings. When the block is housed in the case, the harness fixing spatula is arranged in the harness drawer, and the wire harness is drawn out of the box through the harness drawer, and two or more of the electric connection boxes are provided. An electrical junction box, wherein the harness fixing wrasse is arranged so as to be vertically overlapped with the harness pulling-out portion in a state where the extending directions of the wrench are mutually at a predetermined angle. 2. The harness fixing wrasse is provided with a positioning structure for holding a mutual positional relationship between the harness fixing wrench when the harness fixing wrench is arranged in the harness pull-out portion. The electrical junction box described in 1. 3. The electrical junction box according to claim 1, wherein the harness lead-out portion is a cutout portion provided at an opening edge of a corner portion of the case.