JPH10322848A - Electric junction box positioned in engine room of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect the case main body of an electric junction box in the engine room of an automobile near a battery from the electrolyte of the battery. SOLUTION: In an electric junction box which is positioned in the engine room of an automobile near a battery 4, a case main body 5 housing heat generating parts, such as the fuse, fusible link, etc., is formed by molding a nylon material and, at the same time, a lower cover 6 and upper cover 1 formed by molding polypropylene are respectively attached to the top and bottom of the main body 5. At the same time, a hood section 3 protruded from the external surface of the main body 5 is protruded from the peripheral wall of the upper case 1.

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 such as a fuse box mounted near a battery of an automobile, and a case body made of a nylon material containing a fuse and a fusible link while reducing the number of parts. It protects from liquid.

[0002]

2. Description of the Related Art As shown in FIG. 3, a fuse box mounted near an automobile battery includes a fuse block 30 for storing a plurality of fuses, a fusible link block 31 for storing a plurality of fusible links, and
A frame (cover case) 32 accommodating the blocks 30 and 31 is provided, a lower cover 33 covering the lower surface of the frame 32, and an upper cover 34 covering the upper surface.

The fuse block 30 and the fusible link block 31 are formed of a nylon material having excellent heat resistance because heat generated by the mounted fuse and the fusible link is large. The nylon material has a problem in that it has low durability against dilute sulfuric acid, which is a battery solution, and becomes discolored and easily melted when attached.

Therefore, a frame 32 covering the periphery of the fuse block 30 and the fusible link block 31 is provided.
The frame 32 and the lower cover 33,
The upper cover 34 is made of a polypropylene material that is resistant to the above-mentioned diluted sulfuric acid.

[0005] As described above, the area around the fuse block 30 and the fusible link block 31 is the frame 32,
By covering with the lower cover 33 and the upper cover 34, when refilling the battery solution, dilute sulfuric acid, which is a battery solution dropped from above, spills out and adheres to the upper cover 34 of the fuse box and drops to the lower cover 33 side. Also, the fuse block 30 and the fusible link block 31 covered by the frame 32 do not adhere to the fuse block 3 and the fuse block 3 made of diluted sulfuric acid.
0 and the fusible link block 31 are prevented from being discolored.

[0006]

However, the fuse block 30 and the fusible link block 31 are used to prevent the adhesion of the battery liquid dropped from above.
It is necessary to cover the periphery with a frame 32 as a separate member, so that the number of parts increases, the cost increases, and the number of assembling steps also increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is a block (case body) made of a nylon material containing heat-generating components such as a fuse and a fusible link.
It is an object of the present invention to eliminate the frame used to protect the battery from the battery fluid and reduce the number of parts.

[0008]

According to the present invention, there is provided an electric connection box mounted near a battery in an engine room of an automobile, comprising: a heat-generating electric component. And a lower cover and an upper cover formed of polypropylene are attached to the upper and lower sides of the case body, and an eave is protruded from an outer peripheral wall of the upper cover. An electric junction box mounted in an engine room of an automobile, characterized in that a protruding end of the electric junction box protrudes from an outer surface of a peripheral wall of the case body.

[0009] With the above structure, by making the eaves protrude from the peripheral wall of the upper cover, the dilute sulfuric acid, which is the battery liquid dropped from above when refilling the battery liquid,
Even if it spills and adheres to the upper cover, it can be dropped from the protruding end of the eave portion without being transmitted to and adhered to the outer peripheral surface of the case body. Therefore, unlike the related art, a frame for protecting and housing the fuse box and the fusible link box made of a nylon material can be eliminated.

[0010] The eaves are inclined downward and outward, and are provided only on the battery-side peripheral wall of the upper cover or on the entire peripheral wall.

As described above, when the eaves are inclined, the battery liquid adhering to the upper cover quickly reaches the projecting ends of the projecting portions and falls. In addition, the eaves may be provided only on the side where the battery liquid may fall, but needless to say, they may be provided on the entire circumference.

The electric connection box is suitably used when a fuse body and a fusible link are housed in a case body and used as a fuse box.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. The electric connection box shown in FIG. 1 is composed of a fuse box and is assembled from an upper cover 1, a case body 5, and a lower cover 6. FIG. 1A shows only the case main body 5 composed of a fuse block containing a fuse, but the case main body composed of a fusible link block containing a fusible link is a case main body of the fuse block. 5, the upper cover 1 is attached to the upper surface of the case body, and the lower cover 6 is attached to the lower surface.

As in the conventional case, the case body 5 is formed of a heat-resistant nylon material so as to house fuses and fusible links which are heat-generating components. Similarly, it is formed from a polypropylene material that is resistant to dilute sulfuric acid as a battery liquid.

The upper cover 1 has an outer peripheral wall 2
An eaves portion 3 is protruded from a part of the. The eaves 3 are
As shown in FIG. 1 (A), the outer peripheral wall 2 is provided on a portion of the outer peripheral wall 2 located on the side of the battery 4 when installed in an engine room of an automobile.

The protruding end 3a of the eave portion 3 is connected to the outer peripheral wall 5a of the case body 5 to be assembled below the upper cover 1.
Projecting outward.

In the fuse box configured as described above, when replenishing the battery fluid of the battery 4 mounted in the vicinity, dilute sulfuric acid, which is a battery fluid dropped from above, spills and adheres to the upper cover 1. The dilute sulfuric acid quickly propagates along the slope of the eaves 3 and drops downward after reaching the protruding end 3a. At this time, since the outer peripheral wall 5a of the case body 5 is located inside the protruding end 3a of the eaves portion 3 of the upper cover 1, the diluted sulfuric acid does not adhere.

Therefore, the case body 5 made of a nylon material
It is no longer necessary to cover with a frame made of polypropylene material, the frame required conventionally is not required,
Cost can be reduced.

In the above-described embodiment, the inclined portion is provided in the eave portion 3 of the upper cover 1. However, even if the inclined portion is not provided as shown in FIG. 3 can be dropped without adhering to the outer peripheral wall of the case body 5 made of a nylon material.

Further, in the above-described embodiment, the eave portion is projected from only one side of the battery side of the upper cover 1. However, the invention is not limited to this, and may be projected from the entire periphery of the peripheral wall of the upper cover 1. . In this case, even if the battery replenisher drops from any direction when replenishing the battery fluid, the case body made of the nylon material can be protected.

Further, although the above embodiment is applied to a fuse box, it is needless to say that it can be applied to other electric connection boxes having a case main body formed of a nylon material.

[0022]

As is apparent from the above description, according to the electric connection box including the fuse box and the like of the present invention, when refilling the battery solution, the amount of diluted sulfuric acid contained in the battery solution dropped from above is reduced. Even if it spills and adheres to the upper cover, it can be dropped from the projecting end of the eaves of the upper cover without traveling along the outer peripheral wall of the case body made of a nylon material. Therefore, a frame for covering the peripheral wall of the case body made of a nylon material, which has been required conventionally, can be eliminated, and the number of parts can be reduced and the cost can be reduced.

Further, since no frame is required, the size of the electric junction box can be reduced, and the installation space can be reduced.

[Brief description of the drawings]

1A and 1B show an embodiment of the present invention, in which FIG. 1A is a sectional view of a main part of a fuse box, and FIG. 1B is a perspective view of an upper cover.

FIG. 2 is a sectional view of a main part showing a modification of the present invention.

FIG. 3 is an exploded perspective view showing a conventional fuse box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper cover 2 Outer peripheral wall 3 Eave part 4 Battery 5 Case main body 6 Lower cover

Claims (3)

[Claims] 1. An electric connection box mounted near a battery in an engine room of an automobile, wherein a case main body containing heat-generating electric components is formed of a nylon material, and an upper and lower part of the case main body is formed. A lower cover and an upper cover molded from polypropylene, and an eave portion is projected from an outer peripheral wall of the upper cover, and a protruding end of the eave portion is projected from an outer surface of a peripheral wall of the case body. An electrical junction box installed in the engine room of a car. 2. The vehicle according to claim 1, wherein the eaves are inclined downward and outward, and are provided on only the peripheral wall of the upper cover on the battery side or on the entire peripheral wall. Electrical junction box. 3. The electric connection box according to claim 1, wherein the case body houses a fuse and a fusible link and is used as a fuse box.