Electrical junction box

Patent metadata

Field	Value
Publication number	US-11837857-B2
Application number	US-202017007280-A
Country	US
Kind code	B2
Filing date	Aug 31, 2020
Priority date	Sep 17, 2019
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

A cover-side peripheral wall includes an inner wall, which serves as a first wall, and a bent wall. The inner wall is located between an inner wall and an outer wall of a body-side double-wall. The bent wall extends inward and downward from an inner surface of the inner wall. The bent wall has a proximal end that is located upward from an upper end of the inner wall of a body-side peripheral wall. The bent wall further includes a portion between a distal end and the proximal end that is located inward and downward from the upper end of the inner wall of the body-side peripheral wall.

First claim

What is claimed is:

1. An electrical junction box, comprising:
a case body accommodating an electronic component; and
an upper cover, wherein
the case body includes a body-side peripheral wall, which has a closed form, and an upper opening, which is located at an upper side of the body-side peripheral wall and covered by the upper cover,
the upper cover includes a cover-side peripheral wall that has a closed form and is arranged on the body-side peripheral wall,
the body-side peripheral wall has a body-side double-wall including a first inner wall and an outer wall,
the cover-side peripheral wall includes
a first wall located between the first inner wall and the outer wall of the body-side double-wall and including an inner surface, and
a bent wall that extends inward and downward from the inner surface of the first wall,

the bent wall includes an inwardly extending first extension section including a proximal end connected to the inner surface of the first wall, a downwardly extending second extension section including a distal end, and a bent section connecting the first and second extension sections,
the bent wall is configured such that the first extension section is located above an upper end of the first inner wall of the body-side peripheral wall in a state that the upper cover covers the upper opening of the case body, and that a portion of the second extension section is located at an inner side of and lower than the upper end of the first inner wall of the body-side peripheral wall in the state that the upper cover covers the upper opening of the case body,
the case body includes a first drain passage that is located at an inner side of the first inner wall of the body-side double-wall and below the bent wall, in the state that the upper cover covers the upper opening of the case body,
the first drain passage is defined by a set of walls of the case body that includes the first inner wall of the body-side double-wall and a second inner wall located inside the first inner wall of the body-side double-wall and facing the first inner wall, and
the bent wall is configured such that an upper end of the second inner wall is located lower than the bent wall, in the state that the upper cover covers the upper opening of the case body.

2. The electrical junction box according to claim 1 , wherein the case body includes a second drain passage located below the first wall, in the state that the upper cover covers the upper opening of the case body.

3. The electrical junction box according to claim 2 , wherein the first drain passage and the second drain passage are separate passages configured to drain water.

4. The electrical junction box according to claim 2 , wherein the second drain passage is located at an outer side of the first drain passage.

5. The electrical junction box according to claim 1 , wherein
the cover-side peripheral wall further includes a second wall that is located outward from the first wall, and
the second wall and the first wall are arranged at two sides of the outer wall of the body-side double-wall.

6. The electrical junction box according to claim 1 , wherein the bent wall is configured such that the distal end of the bent wall is located at an inner side of and lower than the upper end of the first inner wall of the body-side peripheral wall in the state that the upper cover covers the upper opening of the case body.

7. The electrical junction box according to claim 1 , wherein the bent wall is arranged on part of the cover-side peripheral wall.

Assignees

• Sumitomo Wiring Systems
• Toyota Motor Co Ltd

Inventors

• Washihira Kenichi
• Shiraki Takashi
• Miyamoto Yuji
• Kawai Takanori
• Kawai Takuma

Classifications

• H02G3/086 Primary

  Assembled boxes · CPC title

• B60R16/0238 Primary

  Electrical distribution centers · CPC title

• H05K5/0217 Primary

  Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03) · CPC title

• H05K5/03

  Covers · CPC title

• H05K5/063

  sealed by a labyrinth structure provided at the joining parts · CPC title