JPH07312815A - Electric connection box for prevention of erroneous fitting of cover - Google Patents

Abstract

PURPOSE:To prevent a drop in the working property of an assembly operation by providing an electric connection box, for prevention of the erroneous fitting operation of a cover, which can prevent the erroneous fitting operation reliably. CONSTITUTION:In an electric connection box, electric wires 35 which are drawn out from connectors 33 installed side by side on an electric-connection-box main body 31 are divided into the right and the left in the juxtaposition direction of the connectors so as to be extracted from both ends of the body 31. In the electric connection box, a rib 49, for prevention of an erroneous fitting operation, which is inserted into a gap S between a connector 33b at the extreme right end out of the connectors 33 from which the electric wires 35 are divided into the left side of the main body 31 and a connector 33a at the extreme left end out of the connectors 33 from which the electric wires 35 are divided into the right side of the main body 31 is installed so as to protrude from the inner circumference of a cover 39 which is fitted to the body 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing reverse fitting of an electric junction box having a cover.

[0002]

2. Description of the Related Art An electric junction box used for electric wiring of an automobile or the like has a structure in which a main body is covered with a cover in order to protect internal electronic parts and the like and to prevent stains. FIG. 5 is a perspective view of a conventional electric connection box, and FIG. 6 is a plan view showing a mounted state of the electric connection box. On the upper surface of the main body 1 of the electrical junction box, the connectors 3 fitted in the connector coupling portion are arranged in parallel,
The electric wires 5 drawn out from the connector 3 are distributed in the juxtaposed direction. That is, the distributed electric wires 5 are led out in a bundle form from both ends of the main body 1. Hook-shaped projections 7 are provided on both edges of the upper surface of the main body 1, and the hook-shaped projections 7 are engaged with locking windows 11 formed in a cover 9 that covers the main body 1. Electric wire insertion holes 13 are formed at both ends of the cover 9, and the electric wire insertion holes 13 lead out the electric wires 5 distributed from both ends of the main body 1 in a bundle. A fixing rod 15 is projectingly provided at one end of both end surfaces of the cover 9, and the fixing rod 15 has a fixing hole 17.

The conventional electric junction box 1 having the above-mentioned structure
In FIG. 9, when the cover 9 is put on the main body 1, the hook-shaped projections 7
Is engaged with the locking window 11 of the cover 9, and the electric wire 5 is led out from the electric wire insertion hole 13, the cover 9 is fitted to the main body 1. Then, as shown in FIG. 6, in the electric connection box 19 fitted with the cover 9, the fixing screw 21 is inserted into the fixing hole 17 of the fixing rod 15, and the fixing screw 21 is attached to the mounting panel 23.
It was fixed to the vehicle side by being screwed into the vehicle.

[0004]

However, in the conventional electric junction box 19, it is difficult to determine the fitting direction from the external shape, and the cover 9 may be fitted in the opposite direction (erroneous fitting). As shown in FIG. 7, the fixed rod 15 is attached to the mounting panel 2
There was a case where it was placed on the opposite side of 3 and it could not be assembled to the vehicle. In order to solve such a problem, conventionally, as shown in FIG. 8, the positions of the hook-shaped projection 7 and the locking window 11 are shifted by a predetermined dimension d on both sides of the main body 1.
A structure in which the hook-shaped projection 7 and the locking window 11 are engaged with each other only in the regular cover fitting direction has also been proposed, but since the cover 9 generally made of a resin material or the like has flexibility, Protrusion 7
Even when the locking window 11 and the locking window 11 do not coincide with each other in the opposite direction, they may be attached to the main body 1 by being forcibly pressed. Therefore, erroneous fitting of the cover 9 may be overlooked just before the vehicle is assembled, and if the electric connection box 19 that is erroneously fitted is found at the time of assembling, the assembling workability is significantly reduced. became. The present invention has been made in view of the above circumstances, and an object thereof is to provide a cover erroneous fitting prevention electric junction box capable of reliably preventing erroneous fitting, and to prevent deterioration of assembly workability.

[0005]

In order to achieve the above object, the cover misfitting prevention electric connection box according to the present invention has the following structure.
In an electrical junction box in which a plurality of connectors are fitted to the connector joints arranged side by side in the main body of the electrical junction box, and the wires drawn from this connector are distributed to the left and right in the direction in which the connectors are aligned and led out from both ends of the main body, A plate-like mis-fitting prevention rib that is inserted into a gap between the connector on the right end of the connector on the left side of the main body and the connector on the left end of the connector on the right side of the main body is provided. It is characterized in that it is provided so as to project inside the cover that is fitted to the.

[0006]

When the cover is fitted in the proper direction, the erroneous fitting prevention rib is inserted into the predetermined gap in which the electric wires are distributed, and the cover is fixed to the main body. On the other hand, when the cover is fitted in the opposite direction, the mis-fitting prevention ribs match the gaps in which the wires are not distributed, and the wires crossing the gap prevent the mis-fitting prevention ribs from being inserted. Cannot be fitted to the main body side.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a cover misfitting prevention electric connection box according to the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a perspective view of a cover mis-fitting prevention electrical junction box according to the present invention, FIG. 2 is an explanatory diagram of a normal mating of the cover mis-fitting prevention electrical junction box of the present invention, and FIG. It is explanatory drawing at the time of reverse fitting in the prevention electric junction box. On the upper surface of the main body 31 of the electric junction box, the connectors 33 that are fitted to the connector coupling portion are arranged in parallel, and the electric wires 35 drawn out from the respective connectors 33 are distributed in the connector paralleling direction. The distribution position is determined by the specifications of the electric junction box. The distribution position in this embodiment is shown in FIG.
When viewed from the front in the direction of arrow A in the middle, there is a gap S between the second connector 33a from the right and the third connector 33b. Therefore, the electric wire 35 does not traverse above the gap S, and the upper portion is in an open state.

The electric wires 35 distributed in the juxtaposed direction are led out in a bundle form from both ends of the main body 31. A hook-shaped projection 37 is provided on the upper surface of the main body 31, and the hook-shaped projection 37 is formed on a box-shaped cover 39 that covers the main body 1.
Engage with 1. Therefore, the cover 39 is fixed to the main body 31 by the hook-shaped projection 37 engaging with the locking window 41. An electric wire insertion hole 43 is provided at both ends of the cover 39.
Is formed, and the wire insertion hole 43 is in a state where the cover is fitted to the body 3
The electric wires 35 distributed in a bundle form from both ends of the wire 1. A fixing rod 45 is projected from one end of each end surface of the cover 39, and the fixing rod 45 has a fixing hole 47.

A plate-like erroneous fitting prevention rib 49 is provided on the inner walls of the cover 39 facing each other, and the erroneous fitting prevention rib 49 is inserted into the gap S when the cover 39 is fitted in the proper orientation. It is arranged in a position. Therefore, when the cover 39 is fitted in the proper orientation, the misfitting prevention rib 49 is inserted into the gap S, and the tip is arranged in the state of being close to the upper surface of the main body 31. With the main body 31, the electric wire 35, the gap S, the cover 39, and the incorrect fitting prevention rib 49 as main members or parts,
A cover mis-fitting prevention electric connection box 51 is configured.

In the cover erroneous fitting prevention electric connection box 51 thus constructed, when the cover 39 is fitted in the proper direction, the erroneous fitting prevention rib 49 is inserted into the gap S, and the cover 39 is further provided. Is pressed to the body 31 side,
The hook-shaped projection 37 engages with the locking window 41, and the cover 39 is fixed to the main body 31 (see the state of FIG. 2). On the other hand, as shown in FIG. 3, when the cover 39 is fitted in the opposite direction, the misfit preventing rib 49 is aligned with the gap S ₁ other than between the connectors 33a and 33b. Then, since the electric wire 35 distributed from the connector 33b crosses the gap S ₁ , the insertion of the incorrect fitting prevention rib 49 is prevented, and the cover 39 is prevented.
Cannot be fitted to the main body 31 side. This allows
It is surely identified as a reverse mating, and
Forced reverse mating in an ambiguous state will also be prevented.

According to the cover mis-fitting prevention electric connection box 51 described above, the cover 39 is provided with the mis-fitting prevention rib 49, and the gap S into which the mis-fitting prevention rib 49 is inserted when the cover is fitted.
Is formed in an upper open state by allocating the electric wires 35 drawn out from the juxtaposed connectors 33, respectively. Therefore, when the cover 39 is fitted in a direction other than the normal fitting direction, the mis-fitting prevention rib 49 causes a gap. Abut the crossing wire 35,
The fitting of the cover 39 is prevented. By this, the cover 3
The reverse fitting of 9 can be reliably prevented.
Further, the cover mis-fitting prevention electric connection box 51 only needs to be provided with the mis-fitting prevention ribs 49 on the cover 39 in addition to securing the gap S. Therefore, the conventional product can be manufactured at a low cost without making a large design change. It can be configured and is extremely economical. Further, in the cover mis-fitting prevention electric connection box 51, since the plate-shaped mis-fitting prevention rib 49 is provided inside the cover 39, rigidity of the cover 39 is increased and deformation is reduced.

The position of the gap S can be set to any position depending on the specifications of the electric junction box. However, in the case where even-numbered connectors 33 of the same size are installed symmetrically, the gap in the center portion can be fitted in both directions.
Of course, it must be excluded.

FIG. 4 is a partially cutaway perspective view showing a specific example of a cover misfitting prevention electric connection box according to the present invention. In addition,
In this example, the connector is not connected to the electrical junction box body. A connector coupling portion 32 for fitting a connector is provided in parallel on the main body 31 of the electric junction box, and five connectors are provided so that they can be fitted in the illustrated one. A bus bar 34 is projectingly provided in the connector coupling portion 32 to form a male terminal. Misfitting prevention ribs 49 having a height lower than that of the side walls are provided on the opposing inner walls of the cover 39, and the misfitting prevention ribs 49 are arranged so as to be located between predetermined connector coupling portions. . Further, a fixing portion 42 for attaching the cover 39 to a mounting panel (not shown) or the like in place of the fixing rod 45 is provided in a substantially central portion of the upper surface of the cover 39. Since other configurations are substantially the same as those of the previous embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

[0014]

As described above in detail, according to the cover mis-fitting prevention electrical junction box of the present invention, the mis-fitting prevention rib is provided and the gap into which the mis-fitting prevention rib is inserted is Since the wires are formed by being distributed, the incorrect fitting preventing ribs can be brought into contact with the wires during reverse fitting to prevent fitting of the cover. As a result, the reverse fitting of the cover can be reliably prevented, and the workability of assembling can be prevented from decreasing.

[Brief description of drawings]

FIG. 1 is a perspective view of a cover mis-fitting prevention electric connection box according to the present invention.

FIG. 2 is an explanatory view of a cover erroneous fitting prevention electrical junction box according to the present invention at the time of normal fitting.

FIG. 3 is an explanatory view of the cover mis-fitting prevention electric connection box according to the present invention at the time of reverse fitting.

FIG. 4 is a partially cutaway perspective view showing a specific example of a cover mis-fitting prevention electric connection box according to the present invention.

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

FIG. 6 is a plan view showing a mounting state of an electric junction box.

FIG. 7 is a plan view showing a mounting state when the cover is reversely fitted.

FIG. 8 is a plan view of a conventional electrical junction box in which the hook-shaped protrusion and the locking window are displaced.

[Explanation of symbols]

 31 Main body 33 Connector 33a Leftmost connector 33b Rightmost connector 35 Electric wire 39 Cover 49 Incorrect fitting prevention rib 51 Cover Incorrect fitting prevention electrical connection box S Gap

Claims (4)

[Claims] 1. A plurality of connectors are fitted to connector connecting portions provided side by side on the main body of an electric junction box, and electric wires drawn out from the connectors are distributed to the left and right in the direction in which the connectors are arranged and led out from both ends of the main body. In the electric connection box, a flat plate-shaped connector is inserted into a gap between the rightmost connector among the connectors whose electric wires are distributed to the left side of the main body and the leftmost connector among the connectors whose electric wires are distributed to the right side of the main body. A cover mis-fitting prevention electrical junction box, characterized in that a mis-fitting prevention rib is provided on the inside of the cover fitted to the main body. 2. The cover mis-fitting prevention electric connection box according to claim 1, wherein the number of the connectors arranged in parallel is odd. 3. The cover misfitting prevention electric junction box according to claim 1, wherein the number of the connectors arranged in parallel is an even number, and the gap is a gap other than a central portion in the juxtaposed direction. 4. The cover mis-fitting prevention electrical junction box according to claim 1, wherein the mis-fitting prevention ribs are provided over the inner walls of the cover that face each other.