JP3402098B2 - Dustproof device for electrical junction box for automobiles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dustproof device for an electric junction box for an automobile, and more particularly, in an electric junction box for accommodating electronic parts or the like, dust, metal, powder or the like is discharged from a cooling hole or the like opened on the outer surface thereof. In order to prevent the entry of the electric connection box, a dustproof cover is covered until the electric connection box is mounted on the automobile.

[0002]

2. Description of the Related Art Conventionally, an electric connection box composed of a junction box or the like accommodating electronic parts, a bus bar, etc.
It is necessary to protect it from metal powder, etc.
It is required to reliably prevent dust and the like from entering through the opening on the outer surface of the electrical junction box.

Therefore, conventionally, as shown in FIG. 6, when a unit 4 having an electronic component 3 mounted on a substrate 2 is built in a junction box 1, a cooling hole 5 opened on an upper wall of the junction box 1 is formed. In order to close the above, etc., a dustproof cover 6 made of a film or the like is placed over the entire upper surface of the junction box 1, and the peripheral edge 6a of the dustproof cover 6 is attached to the junction box 1 with an adhesive. Similarly, in the electric connection box containing the bus bar, the heat generated by the bus bar heats the inside of the box,
An opening for cooling is provided, and in this case as well, a dustproof cover is covered.

As described above, with the dustproof cover 6 covering the junction box 1, it is carried into an automobile assembly plant, and the dustproof cover is removed when it is mounted on the automobile. In this way, by attaching the dustproof cover, it is possible to prevent dust and the like from entering the junction box 1 during the process of being mounted on the vehicle.

[0005]

However, as shown in FIG. 7, it is sometimes forgotten to remove the dustproof cover 6 when it is mounted on an automobile. In that case, the cooling holes 5 and the like of the junction box 1 remain closed, the effect of providing the cooling holes 5 is lost, and the inside of the junction box 1 may be overheated.

The present invention has been made in view of the above problems, and it is an object of the present invention to ensure that the dustproof cover is always removed when the automobile is mounted.

[0007]

In order to solve the above-mentioned problems, the present invention firstly provides a dustproof cover for covering the outer surface of the electric junction box before mounting on an automobile, and the dustproof cover is the above-mentioned electric The electric connection box is to be removed when it is mounted on an automobile, and the electric connection box has a large box portion having a large number of cooling holes formed in an upper wall thereof, and is connected to the large box portion and has an electronic component inside. A small box portion for accommodating the unit is provided, and the small box portion is provided with a connector connecting portion for connecting to the electronic component unit on the upper wall of the large box and the continuous side, and the dustproof cover is While the entire upper wall of the large box portion with a large number of cooling holes opened is provided with an interference portion that extends to the upper wall of the small box portion and covers the connector connection portion, Part The dustproof cover is made of a film, and the dustproof cover is made of a film, and adhesive is applied to both side edges of the dustproof cover, and the dustproof cover is bent on both side edges and attached to both side walls of the large box and the small box. The present invention provides a dustproof device for an electric connection box for automobiles.

If the connector connecting portion to be connected to the connector to be mounted on the vehicle is covered with the dustproof cover as described above, the external connecting member cannot be connected unless the dustproof cover is removed, and therefore the dustproof cover must be used. Will be removed.

Further, since the dustproof cover is made of a film, the film can be cut and used according to the required length, and it is not necessary to provide a dedicated cover, so that the cost can be reduced.

Secondly, the present invention comprises a dustproof cover for covering the outer surface of the electric junction box before mounting on an automobile, wherein the dustproof cover is removed when the electric junction box is mounted on the automobile. The electric connection box includes a large box portion having a large number of cooling holes formed in an upper wall thereof, and a small box portion connected to the large box portion and containing an electronic component unit therein. The box part is provided with a connector connecting part for connecting to the electronic component unit on the upper wall on the side continuous with the large box, and the dustproof cover is provided on the upper wall of the large box where the large number of cooling holes are opened. While covering the entire surface, it has an interference portion that extends to the upper wall of the small box portion and covers the connector connection portion,
An electrical appliance for a vehicle, characterized in that the other parts of the small box part are not covered, and the dustproof cover is made of a resin molded product, and the dustproof cover is detachably attached to the electrical junction box. We provide dustproof devices for junction boxes. If the cover is formed by resin molding as described above, the cost is increased, but there is an advantage that the cover is not damaged and the dust is reliably prevented.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 to FIG. 3 show a first embodiment, and an electric junction box 10 composed of a junction box has a shape in which a small box 12 is projected on one side of a large box 11 and integrated. . An electronic component unit (not shown) is housed inside the large box portion 11,
Therefore, a large number of cooling holes 13 are opened in the upper wall 11a of the large box portion 11. The upper wall 12a of the small box portion 12 is at a position lower than the upper wall 11a of the large box portion, and connector connecting portions 12b, 12c, 12d are provided on the upper wall 12a of the large box portion.
When the vehicle is mounted on the connector connecting portions 12b to 12d,
Connectors 14A to 14 connected to the wire harness W / H
C is connected.

A dustproof cover 15 is provided which covers the entire upper wall 11a of the large box 11 having the cooling holes 13 and covers the connector connecting portions 12b to 12d of the small box 12. . That is, the main body portion 15a that covers the large box portion that requires the cover is extended with the interference portion 15b that covers the connector connection portion.

The dustproof cover 15 is made of a resin film, and the film rewound from the film roll 16 is cut into a predetermined length for use. To the dustproof cover 15 made of this film, a release paper 18 is attached by applying an adhesive 17 along the widthwise edge thereof.

In the body portion 15a of the dustproof cover 15,
While covering the entire upper wall 11a of the large box 11,
Interference portion 15b connects the connector connecting portion 1 of the small box portion 12
2b to 12d are covered, the both sides in the width direction are bent, and the front and rear side walls 11b of the large box 11 and the front and rear side walls 12e of the small box 12 are adhered with an adhesive 17. The adhesive 17 has such an adhesiveness that it can be easily detached from the electric junction box 10 when the dustproof cover 15 is strongly pulled.

When the dustproof cover 15 is used for covering as described above, the cooling hole 13 opened on the upper wall is closed, and the intrusion of dust or the like from the cooling hole can be prevented. Further, dust and the like do not enter the connector connecting portions 12b to 12d that are open upward.

On the other hand, the electric connection box 10 is mounted on an automobile, and the connector 14A to the connector fitting portions 12b to 12d.
When connecting 14C, the interference part 15b of the dustproof cover 15
Dust-proof cover 1 because it interferes with installation
5 will surely be removed.

FIG. 4 shows a modified example of the dustproof cover 15, in which a line 15c is provided at a position corresponding to a boundary line between the main body portion 15a and the interference portion 15b. This line 15
c is attached when the film is manufactured or attached when the film is cut.

If the line 15c is attached, the line 15c is aligned with the boundary between the large box portion 11 and the small box portion 12 when the dustproof cover 15 is put on the electric junction box 10. 15a covers the entire upper surface of the large box portion, and the interference portion 15b extends on the upper surfaces of the connector connecting portions 12b to 12d. As described above, when the line 15c is added, the mounting position is not mistaken, and the workability is improved.

FIG. 5 shows a second embodiment in which the dustproof cover 20 is formed by resin molding. The dustproof cover 20 includes an upper wall 11a and front and rear side walls 11b of the large box portion 11.
A small inverted U-shaped interference portion 20b that covers an upper portion of the connector connecting portion of the small box portion 12 is continuously provided on one side of the inverted U-shaped main body portion 20a that covers.

If a stopper (not shown) is provided at an appropriate position on the dustproof cover 20 and the stopper is inserted by using a hole or the like opened on the outer surface of the electrical junction box, It does not easily come off from the electric junction box 10 and can be removed by pulling out the stopper portion from the hole when it is mounted on an automobile.

[0022]

In the above embodiment, the junction box is composed of a large box part and a small box part.
It is needless to say that the dustproof cover of the present invention can be similarly applied to the case where the small box portion is provided with the connecting portion for the external connecting member, but the large box portion side is also provided with the connecting portion for the external connecting member. . Further, not only when the electronic component unit is housed inside the junction box, but also when the bus bar is housed, there is an opening for heating prevention and the like, so the dustproof cover of the present invention can be applied. .

[0024]

As is apparent from the above description, according to the present invention, the dustproof cover is provided with the interference portion, and the interference portion is extended to the position where the interference portion is connected to the external connection member when the automobile is mounted. , The dustproof cover is forcibly removed when installed in a car. Therefore, it is possible to reliably prevent the situation in which the inside of the electric junction box is overheated by forgetting to remove the dustproof cover and closing the cooling hole.

In particular, since the interference portion is simply extended to the dustproof cover which has been used conventionally, the cost is not increased and the practical value is great.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a dustproof cover is attached to the electric junction box of the first embodiment.

FIG. 3 is a perspective view showing a state in which the dustproof cover is removed to mount the electric connection box of the first embodiment on an automobile and connect the connector.

FIG. 4 is a perspective view showing a modified example of the dustproof cover.

FIG. 5 is a perspective view of a second embodiment.

6A and 6B are perspective views showing a conventional example.

FIG. 7 is a perspective view showing a conventional problem.

[Explanation of symbols] 10 electrical junction box 12b-12d Connector connection part 15, 20 Dust cover 14A-14C connector 15a, 20a main body 15b, 20b interference part 15c line

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60R 16/02 610 H02G 3/08

Claims (2)

(57) [Claims] 1. The outer surface of the electrical junction box before being mounted on a vehicle
TocoverDustproof coverThe dustproof cover is provided with the above-mentioned electric
The connection box is to be removed when it is installed in a car, The electric junction box has many cooling holes on the upper wall.
Both the large box part and the large box part
A small box that houses the electronic component unit inside
And the small box part is continuous with the large box
Connector on the upper side of the side to connect with the electronic component unit.
A sequel is provided, The dustproof cover is a large size with many cooling holes
While covering the entire upper wall of the box part, the above small box
Interference part that extends to the top wall of the part and covers the connector connection part
Equipped, but do not cover the rest of the small box
And the dustproof cover is made of film.
The adhesive on both sides of the dustproof cover.
Bend the peripheral edges of both sides to
On both sides of the box Automatic characterized by being installed
Dustproof device for electric junction boxes for cars. 2.The outer surface of the electrical junction box before installation in the vehicle
A dust-proof cover for covering the
The connection box is to be removed when it is installed in a car, The electric junction box has many cooling holes on the upper wall.
Both the large box part and the large box part
A small box that houses the electronic component unit inside
And the small box part is continuous with the large box
Connector on the upper side of the side to connect with the electronic component unit.
A sequel is provided, The dustproof cover is a large size with many cooling holes
While covering the entire upper wall of the box part, the above small box
The connector connecting part extends to the upper wall of the part and covers the interference part.
Equipped, but do not cover the rest of the small box
The dust-proof cover is made of a resin molded product.
Detachably attach the dustproof cover to the electrical junction box
Is characterized by Dustproof equipment for automobile electrical junction boxes
Place