Waterproofing structure for electric junction box

Abstract

To provide the waterproof structure of an electric connection box which can raise waterproofness according to a simple structure. Since the moisture dropped to an external double wall 23U provided at the upper side of the electric connection box 10 in a using state flows through the outside of cover members 30f, 30r, the moisture can be prevented from being flooded into the electric connection box 10. If the moisture flows to a body 20 side along the cover members 30f, 30r to flood into the external double wall 23, ribs 32a protruding from the engaging edges 32f, 32r of the cover members 30f, 30r toward the inner surface 24a of the external double wall 23 prevent the moisture from being flooded, and the moisture can be prevented from being flooded into the electric connection box 10. (C)2005,JPO&NCIPI.

Description

technical field [0001] The invention relates to a waterproof structure of an electric junction box. Background technique [0002] Generally, electrical junction boxes used for electric circuits of automobiles are often placed in the engine compartment, but they may also be placed in the vehicle. At this time, although the situation of directly spraying water is rare, when the current popular wet cleaning (washing) in the car, or when drinking or splashing the condensed water flowing from the air-conditioning duct when eating in the car, it is necessary It will be required to prevent water from entering the car. [0003] The use of O-rings is considered for good waterproof performance, but this requires grooves corresponding to the O-rings to be formed on the body and cover parts. Thus, problems such as an increase in mold cost, an increase in the number of parts due to the use of the O-ring, and an increase in assembly man-hours are incurred. [0004] In view of the above...

AI Technical Summary

Problems solved by technology

[0009] But, in described electrical connection box 110, finish the positioning and waterproofing to the lower cover 112 as main body and the upper cover 111 as cover parts simultaneously, thereby, when the lower cover 112 and upper cover 111 are deformed due to aging, as Figure 9 The upper peripheral wall 112a of the shown lower cover 112 is stuck on the step 113a in the middle of the skirt 113 of the upper cover 111, making mutual fitting very difficult

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