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Electrical junction box

A technology for electrical junction boxes and circuit boards, applied in the direction of circuits, electrical components, emergency protection devices, etc., to achieve the effect of preventing adhesion to circuit boards

Inactive Publication Date: 2012-07-04
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, according to the above configuration, there is a possibility that the water that has reached the drain will flow around the lower surface of the connector body and will flow toward the circuit board
The water will then adhere to the circuit board causing a short circuit in the circuit formed on the circuit board

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0065] now refer to Figure 1 to Figure 9 A first embodiment is described below in which the present invention is applied to an electrical junction box 10 to be installed in a motor vehicle. The electrical junction box 10 according to the first embodiment accommodates a circuit board 12 inside a casing 11 . The electrical junction box 10 is arranged between a power source (not shown) and on-vehicle electrical components (not shown) such as lamps and horns to supply and cut off current to and from the on-vehicle electrical components. Below, figure 2 The upper side in is defined as "upper side", while figure 2 The lower side in is defined as "lower side". in addition, Figure 4 The right side in is defined as the "front side", while Figure 4 The left side in is defined as the "rear side".

[0066] Shell 11

[0067] like Figure 1 to Figure 4 As shown in , the casing 11 is made of a synthetic resin material and opens downward. shell from figure 1 The thickness dimen...

no. 2 example

[0097] Next will refer to Figure 10 to Figure 12 A second embodiment of the electrical junction box 10 according to the present invention is described. In the second embodiment, the front side ( Figure 11 A pair of locking protrusions 41 respectively protruding toward the front side are provided. Although the detailed structure is not shown in the drawings, the rear side of the lower frame portion 28 of the frame body 25 ( Figure 11 In the right rear side) is also provided with a pair of identical locking protrusions 41.

[0098] like Figure 10 As shown in , the side wall portion of the housing 11 at a position opposite to the locking portion 41 is provided with lock receiving openings 42 elastically engaging the locking protrusions 41 , respectively.

[0099] like Figure 11 As shown in , the lower surface of the lower frame part 28 of the frame body 25 is provided with a plurality of (three in the second embodiment) lower connector housings 20 (corresponding to the ...

no. 3 example

[0109] Next will refer to Figure 13 A third embodiment of the electrical junction box 10 according to the present invention is described. In a third embodiment, arranged in Figure 13 The side frame portion 27 at the front right side in the center is provided with a cover portion 50 bridging between the aforementioned pair of side walls 36 defining the groove portion 35 to cover the groove portion 35 . The cover portion 50 covers the region from the upper end to the lower end of the groove portion 35 . although Figure 13 The detailed structure is not shown in , but the side frame portion 27 arranged on the left rear side is still provided with the same cover portion 50 .

[0110] Since the preferred configuration other than the above configuration in the third embodiment is basically the same as that of the second embodiment, repeated descriptions are omitted by giving the same reference numerals to the same elements in the third embodiment.

[0111] In the case where th...

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PUM

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Abstract

The present invention provides an electrical junction box that can prevent water in a casing from attaching to a circuit board. The electrical junction box may include a casing, an upper connector housing and fuse-mounting sections that are disposed on and are open in an upper wall in the casing, a circuit board contained in the casing, an upper frame portion that is disposed below the upper connector housing and fuse-mounting sections in the casing to cover an upper part of the circuit board, side frame portions that extend downward from side edges of the upper frame portion and are disposedadjacent to sides of the circuit board, slopes that are formed on an upper surface of the upper frame portion and slant down to the side frame portions, and groove portions that extend in a vertical direction on outer surfaces of the side frame portions. The casing may be provided with first drainage portions that are open at positions opposite to the lower end edges of the groove portions.

Description

[0001] incorporated by reference [0002] This application claims priority from JP 2008-138497 filed in Japan on May 27, 2008, the disclosure of which is hereby incorporated by reference in its entirety. Background technique [0003] The present invention relates to an electrical junction box in which a circuit board is accommodated in a case. [0004] Heretofore, as disclosed in Patent Document 1, an electrical junction box installed in a motor vehicle to supply and cut off electric current to and from electric components such as lamps and horns has been known. The electrical junction box houses a circuit board within the housing on which the electronic components are mounted. The upper part of the housing is provided with a mounting portion that is open upward and is adapted to receive a fitting (such as a connector). [0005] For example, in the case where an electrical junction box is accommodated in an engine compartment in a motor vehicle, when water flows down onto th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G3/16
CPCH02G3/088H01H2085/208
Inventor 中西龙治山根茂树
Owner AUTONETWORKS TECH LTD