# US 2026/0100561 A1 · Electrical junction box

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- Number: US 2026/0100561 A1
- Document ID: US20260100561A1
- Status: Published application
- Kind: A1
- Application number: 19/350,365
- Filed: 2025-10-06
- Published: 2026-04-09
- Earliest claimed: 2024-10-09
- Assignees: Yazaki Corporation; Toyota Jidosha Kabushiki Kaisha
- Applicants: Yazaki Corporation; Toyota Jidosha Kabushiki Kaisha
- Inventors: Naoki Sakaguchi; Kazuki Kobayashi; Yoshikazu Ezuka; Shogo Tomihira
- Web page: https://patentgrep.com/patent/US20260100561A1

## CPC

- H02G 3/081: {Bases, casings or covers}
- H02G 3/16: structurally associated with support for line-connecting terminals within the box
- H02G 5/06: Totally-enclosed installations, e.g. in metal casings
- H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES

## Abstract

An object is to provide an electrical junction box in which the mounted component can be properly replaced. An electrical junction box includes a housing that includes a bus bar connection part to which a bus bar unit is connected, and a mounted component to which power is supplied from the bus bar unit via the bus bar connection part; a cover that at least covers a conductor part of the mounted component in an openable and closable manner; and a hinge that connects the cover to the housing in a rotatable manner between a close position and an open position.

## Claims

### Claim 1

An electrical junction box comprising:
a housing that includes a bus bar connection part to which a bus bar unit is connected, and a mounted component to which power is supplied from the bus bar unit via the bus bar connection part;
a cover that covers at least a conductor part of the mounted component in an openable and closable manner; and
a hinge that connects the cover to the housing in a rotatable manner between a close position and an open position, wherein
the cover includes an interference part that allows a connection between the bus bar connection part and the bus bar unit while the cover is located at the close position, and that does not allow a connection between the bus bar connection part and the bus bar unit while the cover is located at the open position.

### Claim 2 (depends on 1)

The electrical junction box according to claim 1, wherein
the interference part is located outside a connection area of the bus bar connection part and the bus bar unit while the cover is located at the close position, and the interference part intrudes into an inside of the connection area while the cover is located at the open position (P2).

### Claim 3 (depends on 2)

The electrical junction box according to claim 2, wherein
the bus bar unit includes a bus bar and a bus bar case that stores the bus bar, and
the connection area is an area enclosed by a contour of the bus bar case while the bus bar connection part and the bus bar unit are connected.