IP Library › Granted Patent US 12665402
Granted Patent B2
US 12665402 · App. 18/836,513 · Granted Jun 23, 2026

Electrical junction box

Inventors: Maiko Isshiki (Yokkaichi, JP); Takumi Ejima (Yokkaichi, JP)
Assignee: Sumitomo Wiring Systems, Ltd.
H02G3/03B60R16/0239H02G3/081B60R16/03
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Quick Facts
Patent No.
US 12665402
App. No.
18/836,513
Granted
Jun 23, 2026
Kind
B2
Abstract

An electrical junction box includes a housing constituted by an upper case and a lower case that have different linear expansion coefficients from each other, a busbar fixed to the upper case being in contact with a gap filler adhered to an inner surface of the lower case, and the electrical junction box includes a plurality of connection members that are provided in a vicinity of the gap filler and connect an inner surface of the lower case and an inner surface of the upper case that faces the inner surface.

Claims (13)

1 . An electrical junction box comprising:

a housing constituted by a first member having an inner surface and a second member having an inner surface facing the inner surface of the first member, the first member spaced apart from the second member and the first member and the second member have different linear expansion coefficients from each other, a busbar fixed to the first member being in contact with a heat dissipation member adhered to the inner surface of the second member; and

a plurality of connection members that are disposed entirely within the housing and in a vicinity of the heat dissipation member and connect the inner surface of the second member to the inner surface of the first member.

2 . The electrical junction box according to claim 1 , wherein the connection members extend in a direction in which the inner surfaces of the first member and the second member face each other, and are provided to surround the heat dissipation member.

3 . The electrical junction box according to claim 2 ,

wherein the first member has a higher linear expansion coefficient than the second member,

the connection members each include a first portion provided on the inner surface of the first member, and a second portion provided on the inner surface of the second member, and

the first portion has higher elasticity than the second portion.

4 . The electrical junction box according to claim 3 , wherein the length of the first portion in the opposing direction is longer than the length of the second portion.

5 . The electrical junction box according to claim 4 , wherein the first portion and the second portion are engaged with each other.

6 . The electrical junction box according to claim 4 , wherein the first portion is screwed to the second portion.

7 . The electrical junction box according to claim 3 , wherein the first portion and the second portion are engaged with each other.

8 . The electrical junction box according to claim 3 , wherein the first portion is screwed to the second portion.