JPH0727235U - Electrical junction box - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide an electric junction box that is surely waterproof and does not cause malfunction of electric parts. [Structure] This electric junction box 10 comprises a lower case 14 accommodating a wiring board 12 composed of an insulating plate and a bus bar, and an upper case 1 in which electric parts such as fuses and relays are mounted.
The upper cover 16 is provided with an upper cover 18, and the lower case 14 is provided with a lower cover 20 at the lower part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric junction box used for wiring in an automobile.

[0002]

[Prior art]

 As shown in FIGS. 4 and 5, a conventional electrical junction box 1 has an upper case 2 in which electrical components such as fuses and relays are inserted and housed in a lower case 3, and a packing is provided above the upper case 2. Also, the upper cover 5 is attached via a waterproof member 4 such as a wrap, and the lower cover 6 is attached below the lower case 3.

[0003]

[Problems to be solved by the device]

 However, in such an electrical junction box, when running at high speed in rainy weather or during high-pressure car washing, water intrudes through the minute gaps between the upper cover and the lower case, and the electrical components and insulating plates are exposed to water, causing a short circuit, There was a risk of leaks and rust.

[0004]

[The purpose of the device]

 SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide an electric connection box in which waterproofing inside the electric connection box is reliable and electric parts do not become defective.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides an electrical connection box in which an upper case and a lower case, in which electric parts such as fuses and relays are inserted, are combined, and an upper cover is attached to the upper case. It is characterized by covering and attaching an upper cover to the upper case.

[0006]

[Action]

 As described above, in the electrical junction box of the present invention, the lower case is completely covered with the upper case, so that the electrical connection can be made without interposing the waterproof members such as packing and wrap on the mounting surface of the upper cover and the upper case. No water will enter the box.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the electrical junction box 10 has a lower case 14 accommodating a wiring plate 12 including an insulating plate and a bus bar, and an upper case 16 in which electric parts such as fuses and relays are inserted. The upper case 16 is covered with an upper cover 18, and the lower case 14 is fitted with a lower cover 20 at the lower part.

The upper case 16 has a skirt portion 22 for completely covering the lower case 14, and the skirt portion 22 extends the side surface of the upper case 16 below the bottom surface of the upper case 16. Further, on the side surface of the upper case 16, there is formed a step portion 24 that fits with a step formed near the opening of the upper cover 18 and prevents water from entering the electrical junction box.

As another embodiment, as shown in FIG. 3, a drain port 28 communicating with the lower cover 20 may be provided in the groove 26 provided in the upper case 16. By doing so, even if the upper case 16 is submerged, the water does not adhere to the electric components and the wiring board and is discharged to the lower cover 20 through the drain port 28.

[0010]

[Effect of device]

 As described above, in the present invention, the lower case is completely covered with the upper case, so that water does not enter the electric junction box without interposing a waterproof member such as packing and wrap. Therefore, it is possible to obtain an electric junction box having extremely high waterproofness, which is free from problems such as leakage and rust of electric parts.

[Brief description of drawings]

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

FIG. 2 is a sectional view showing an embodiment of the electrical junction box of the present invention.

FIG. 3 is a sectional view showing another embodiment of the electrical junction box of the present invention.

FIG. 4 is a perspective view showing a conventional electric junction box.

FIG. 5 is a sectional view showing a conventional electric junction box.

[Explanation of symbols]

 10 Electrical Connection Box 12 Wiring Board 14 Lower Case 16 Upper Case 18 Upper Cover 20 Lower Cover 22 Skirt Part 24 Step Part 26 Groove Part 28 Drainage Port

Claims (1)

[Scope of utility model registration request] 1. An electrical junction box comprising an upper case and a lower case, in which electric parts such as fuses and relays are inserted and attached, and an upper cover attached. An electric connection box characterized by being attached.