JPH1127827A - Electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical junction box which can prevent an upper case other than a prescribed one from being fitted erroneously into a prescribed lower case, or a prescribed upper case from being fitted into a lower case other than a prescribed one, in fitting the upper case into the lower case. SOLUTION: This first electrical junction box 11 is constituted of a first lower case 13 for storing electrical equipment and a first upper case 15 fitted into the first lower case 13. The first power case 13 is formed with a protrusion 24, and the first upper case 15 is formed with a recess 25. The protrusion 24 and the recess 25 are constituted so that they fit each other through their protrusion-recess structures.

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 disposed on an inner wall of a vehicle body of an automobile, for example.

[0002]

2. Description of the Related Art An electric connection box which stores various electrical components for a vehicle and serves as a connection branch point of wiring such as a wire harness is provided with various types of vehicles according to the grade, type and use of the vehicle. There is a format. FIGS. 3 (a) and 3 (b) and FIGS. 4 (a) and 4 (b) show simplified versions of the first electric connection box 11 and the second electric connection box 12 when the grade of the vehicle is different. .

FIGS. 3A, 3B and 4A,
As shown in (b), the first electric connection box 11 and the second electric connection box 12 (also called a junction box (J / B)) are composed of a first lower case 13 and a second lower case 14 made of synthetic resin, and First upper case 1 made of synthetic resin to be fitted to first lower case 13 and second lower case 14
5, the second upper case 16, and the first electrical connection box 11 and the second electrical connection box 12 accommodate electrical components (not shown).

On the upper surfaces of the first upper case 15 and the second upper case 16, electric component mounting portions 17 and 18 for mounting electric components are formed so as to protrude, and the first upper case 15 and the second upper case are formed. 16 and integrated.

A mounting portion 19 is formed on the upper surface of the first upper case 15 so as to protrude so as to be inclined, and a bolt insertion hole 20 is formed in the mounting portion 19. The first electrical connection box 11 is fixed by inserting a bolt through the bolt insertion hole 20 and screwing it to the inner wall of the vehicle body. A projection 21 is formed on the upper surface of the second upper case 16, and the second electrical connection box 12 is fixed to the inner wall of the vehicle body by attaching the projection 21 to a bracket (not shown) or the like.

Further, a connector 22 for connecting wirings such as a wire harness is provided on the side wall of the first lower case 13.
Are provided, and two connectors 23 are provided on the side wall of the second lower case 14.

As described above, the first electrical connection box 11 and the second
The difference from the electric connection box 12 is that the first lower case 13 and the second
The shapes of the mounting portion 19 and the projecting portion 21 formed on the upper surface of the lower case 14, the first lower case 13, and the second lower case 1
4 and the number of connectors 22 and 23 protruding from the side wall, and the other parts are the same. In addition, these mounting parts 1
9, the protrusion 21 and the connectors 22 and 23 are formed by nesting of a mold, and are integrally formed with the first upper case 15, the second upper case 16 or the first lower case 13 and the second lower case 14.

[0008]

However, in the first electric connection box 11 and the second electric connection box 12, the mounting portion 1
9, the other parts than the protruding part 21 and the connectors 22 and 23 are formed in the same shape, and a combination of the first lower case 13 or the second lower case 14 and the first upper case 15 or the second upper case 16 is used. Hard to distinguish.
Further, the first upper case 15 and the second upper case 16 can be fitted to the first lower case 13 and the second lower case 14, respectively.

For this reason, when fitting the upper cases 15 and 16 to the lower cases 13 and 14, the second upper case 16 may be mistakenly fitted to the first lower case 13,
There is a possibility that the first upper case 15 may be fitted to the lower case 14.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to erroneously fit an upper case other than a predetermined upper case to a predetermined lower case when fitting the upper case to the lower case. It is an object of the present invention to provide an electric connection box which can prevent the upper case from being fitted to the lower case other than the predetermined case.

[0011]

In order to achieve the above object, in the electric connection box according to the first aspect of the present invention, a lower case for accommodating electric components and an upper case fitted to the lower case are provided. The gist is that the lower case and the upper case are provided with erroneous assembly preventing means for preventing erroneous assembly thereof.

Here, the erroneous assembly preventing means includes a lower case and an upper case in which a non-predetermined upper case is fitted to a predetermined lower case, or a predetermined upper case is fitted to a non-predetermined lower case. Means for preventing erroneous combinations (mis-assemblies).

According to a second aspect of the present invention, in the electrical junction box according to the first aspect, the gist is that the erroneous assembly preventing means is configured to correspond to a concave-convex fitting relationship. According to a third aspect of the present invention, in the electrical junction box according to the first or second aspect, the gist is that the erroneous assembly preventing means is formed by inserting a die.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an electric junction box embodying the present invention will be described with reference to FIGS. 1 (a), (b), (c) and FIGS. 2 (a), (b), (c). It will be described based on. In addition,
3A and 3B and FIG.
The same components as those described in (a) and (b) are denoted by the same reference numerals and description thereof is omitted. The description will focus on the differences from the above-described conventional first and second electric connection boxes 11 and 12.

As shown in FIGS. 1 (a), 1 (b) and 1 (c), in the first electric connection box 11 of the present embodiment, the projection 24 as a means for preventing erroneous assembly is provided on one side wall of the first lower case 13. A projection 25 is formed on the right side in the drawing from the center, and a concave portion 25 as a mis-assembly prevention means is cut out in a right side portion on the drawing from the center of one side wall of the first upper case 15 so as to correspond to the projection 24. .

As shown in FIGS. 2 (a), 2 (b) and 2 (c), in the second electric connection box 12 of the present embodiment, the convex portion 26 as a means for preventing erroneous assembly is provided on the second lower case 14. A notch is formed on the left side of the second upper case 16 from the center of one side wall of the second upper case 16 so as to protrude from the center of the inner surface of the one side wall to the left side in the figure so that a concave portion 27 as an erroneous assembly preventing means corresponds to the convex portion 26. Is formed.

Incidentally, these convex portions 24, 26 and concave portion 2
Reference numerals 5 and 27 denote a mounting portion 19, a protruding portion 21 and a connector 2.
It is formed by nesting of a mold in the same manner as in the case of forming 2, 23. The projections 24 and the recesses 25 and the projections 26 and the recesses 27 can be fitted by their unevenness.

The operation and effect of this embodiment will be described below. In the present embodiment, when trying to fit the first upper case 15 to the first lower case 13 from above, first, the concave portion 25 of the first upper case 15
Is in contact with the convex portion 24 of the first lower case 13 and is positioned. Thereafter, when the first upper case 15 is pushed into the first lower case 13, the projections 24 of the first lower case 13 and the recesses 25 of the first upper case 15 are fitted to each other, and at the same time, the first upper case 15 1 lower case 1
3 is fitted.

However, with respect to the first lower case 13, the second
Even if the upper case 16 is to be fitted from above,
Since the convex portion 24 protrudingly formed in the lower case 13 hinders the fitting of the second upper case 16, the first lower case 1
3 cannot fit the second upper case 16.

The case where the second upper case 16 is to be fitted to the second lower case 14 and the case where the first upper case 15 is to be fitted to the second lower case 14 are the same as those described above. is there.

Therefore, unlike the conventional case, the lower case 1
When fitting upper cases 15, 16 to 3, 14,
It is possible to prevent the second upper case 16 from being fitted to the first lower case 13 and the first upper case 15 from being fitted to the second lower case 14 by mistake. In other words, the first lower case 13 is attached to the first upper case 15.
Can be fitted without erroneous assembling, and the second upper case 16 can be fitted into the second lower case 14 without being erroneously assembled.
In the present embodiment, the first lower case 13 and the second
The lower case 14 has protrusions 24 and 26 and the first upper case 15 and the second upper case 16 has recesses 25 and 27. For this reason, when fitting the upper cases 15, 16 to the lower cases 13, 14, the projections 24, 26
And the recesses 25 and 27 fit each other,
It is possible to reliably inspect whether the lower cases 13, 14 and the upper cases 15, 16 are erroneously assembled. Further, in the present embodiment, the mounting portion 19, the connector 22, the convex portion 24 and the concave portion 25 in the first electric connection box 11, and the projecting portion 21, the connector 23 and the convex portion 26 in the second electric connection box 12.
The concave portion 27 is formed by inserting a mold. Therefore, parts other than the nest of the mold can be shared, and the manufacturing steps of the first electric connection box 11 and the second electric connection box 12 can be omitted.

The above embodiment can be embodied with the following modifications. In the above embodiment,
The concave portions 25 and 27 and the convex portions 24 and 26 serve as erroneous assembly prevention means.
Is used, but is not particularly limited as long as erroneous assembly can be prevented. For example, the relationship may be changed to a relationship between holes and protrusions. -In the said embodiment, although the convex part 24,26 and the recessed part 25,27 were formed in the 1st electric connection box 11 and the 2nd electric connection box 12, the shape of these convex part 24,26 and recessed part 25,27, The size, forming position, and the like are not particularly limited. In the above embodiment, the first lower case 13 and the second lower case 1
4 is formed with one convex portion 24, 26 respectively, and the first upper case 15 and the second upper case 16 are provided with concave portions 25, 2 respectively.
Although each one is formed, a plurality of them may be formed. In the embodiment, the first lower case 13 and the second lower case 14 are formed with the convex portions 24 and 26, and the first upper case 15 and the second upper case 16 are formed.
Recesses 25 and 27 are formed in the first lower case 1
3. A concave portion may be formed in the second lower case 14, and a convex portion may be formed in the first upper case 15 and the second upper case 16. In addition, the first lower case 13 and the second lower case 1
4 may be formed by adding a concave portion, and a convex portion may be formed on the first upper case 15 and the second upper case 16 so as to correspond to the concave portion.

The "electric junction box" referred to in this specification is
It means all aspects of the intervening existence provided for storing various electrical components and connecting them to wire harnesses and other wirings, and is limited to a so-called junction box (J / B) is not.

[0024]

Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, the lower case and the upper case are provided with erroneous assembly preventing means for preventing erroneous assembly thereof.
For this reason, when fitting the upper case to the lower case, it is possible to prevent a wrong upper case from being fitted to the predetermined lower case by mistake, or a case where the predetermined upper case is fitted to the other lower case. be able to.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described in (1), the erroneous assembly preventing means is configured to correspond to the lower case and the upper case in an uneven fitting relationship. For this reason, when fitting the upper case to the lower case, it is possible to reliably inspect whether or not the lower case and the upper case are erroneously assembled by checking whether or not the unevenness provided on the lower case and the upper case are mutually fitted. it can.

According to the invention described in claim 3, according to claim 1
Or, in addition to the effect of the invention described in 2 above, since the erroneous assembly preventing means is formed by nesting of the mold, parts other than the nesting of the mold can be shared, and the manufacturing process of the electrical junction box can be omitted. Can be achieved.

[Brief description of the drawings]

1A is an exploded perspective view showing a first electric connection box of the present invention, FIG. 1B is a side view showing a main part of a first upper case,
(C) The top view which shows the principal part of 1st lower case.

2A is an exploded perspective view showing a second electric junction box of the present invention, FIG. 2B is a side view showing a main part of a second upper case,
(C) The top view which shows the principal part of 2nd lower case.

3A is an exploded perspective view showing a first conventional electric connection box, and FIG. 3B is a plan view showing the first conventional electric connection box.

4A is an exploded perspective view showing a second conventional electric connection box, and FIG. 4B is a plan view showing the second conventional electric connection box.

[Explanation of symbols]

11 ... first electrical connection box, 12 ... second electrical connection box, 13 ...
1st lower case, 14 ... 2nd lower case, 15 ... 1st upper case, 16 ... 2nd upper case, 24 ... convex part as erroneous assembly prevention means, 25 ... concave part as erroneous assembly prevention means, 26 ... erroneous assembly prevention Protrusion as means, 27... Recess as erroneous assembly prevention means.

Claims (3)

[Claims] 1. A lower case for accommodating electrical components and an upper case fitted to the lower case, wherein the lower case and the upper case are provided with erroneous assembly preventing means for preventing erroneous assembly thereof. Electrical junction box. 2. The electrical junction box according to claim 1, wherein said erroneous assembly preventing means has a configuration corresponding to the fitting relationship of the unevenness. 3. The electrical junction box according to claim 1, wherein the misassembly prevention means is formed by inserting a die.