Electrical junction box

Abstract

To provide a technique capable of causing a waterproof resin filled in a flowable state in a penetration hole to stay in the penetration hole until becoming non-flowable.SOLUTION: An electric connection box 10 comprises: one or more bus bars 20; a molding resin part 30 in which the bus bars 20 are molded as insert components; a case 40 that covers the molding resin part 30 to form a waterproof space 12; a closing part 50 that closes a first open part 35 in a penetration hole 34 formed so as to penetrate the molding resin part 30; and a waterproof resin 60 that is filled in the penetration hole 34. The penetration hole 34 is formed so as to expose the whole of peripheries of the inter mediate parts 23 of the bus bars 20 between a first holding part 31 and a second holding part 32. The closing part 50 is a member which is provided separately from the molding resin part 30. The waterproof resin 60 reaches the closing part 50 while covering the whole of the peripheries of the inter mediate parts 23 of the bus bars 20.SELECTED DRAWING: Figure 3

Claims

1. Bus bar and, The aforementioned busbar is used as an insert part in the molded resin portion, A case that covers the molded resin part and forms a waterproof space, A through hole formed to penetrate the molded resin portion, with a first opening and a second opening, the closing portion of which closes the first opening, The waterproof resin filling the through hole, Equipped with, The molded resin portion has a first holding portion that holds one end of the busbar and a second holding portion that holds the other end of the busbar while exposing it to the waterproof space. The through hole is formed between the first holding portion and the second holding portion so as to expose the entire circumference of the intermediate portion of the busbar. The aforementioned closing portion is a member provided separately from the molded resin portion. The waterproof resin covers the entire circumference of the intermediate portion of the busbar and extends to the closing portion. The case has a top plate portion and side plate portion formed in a box shape that encloses the waterproof space, and a flange portion extending from the side plate portion. The closing portion is connected to the flange portion, On the flange portion opposite to the side from which the side plate portion protrudes, a first groove and a second groove are formed. The first groove extends to surround the portion of the flange from which the side plate portion protrudes, The electrical connection box is located such that the second groove is further away from the portion of the side plate that protrudes than the first groove, and the closing portion is located between the first groove and the second groove.

2. An electrical junction box according to claim 1, The aforementioned closure portion is an electrical connection box, which is provided integrally with the case.

3. An electrical junction box according to claim 1 or claim 2, An electrical connection box in which the closed portion and the peripheral edge of the through hole in the molded resin portion are welded together.

4. An electrical junction box according to any one of claims 1 to 3, An electrical connection box in which an annular groove is formed on one of the closed portion and the peripheral edge of the through hole in the molded resin portion, and an annular protrusion that fits into the groove is provided on the other.

5. An electrical junction box according to any one of claims 1 to 4, An electrical connection box in which the bottom portion of the closed section of the through-hole is inserted into the through-hole.

Images