# US 12,119,631 B2 · Electrical connection box

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- Number: US 12,119,631 B2
- Document ID: US12119631B2
- Status: Granted
- Kind: B2
- Application number: 17/647,211
- Filed: 2022-01-06
- Published: 2022-07-14
- Granted: 2024-10-15
- Earliest claimed: 2021-01-08
- Assignees: Sumitomo Wiring Systems, Ltd.
- Applicants: Sumitomo Wiring Systems, Ltd.
- Inventors: Yoshiharu Sato; Takumi Ejima
- Web page: https://patentgrep.com/patent/US12119631B2

## CPC

- B60R 16/0238: {Electrical distribution centers}
- H02G 3/14: Fastening of cover or lid to box
- H02G 5/02: Open installations
- H01H 2085/2075: {Junction box, having holders integrated with several other holders in a particular wiring layout}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)

## Abstract

A portion that covers a connection portion between a relay and a bus bar is prevented from coming off. An electrical connection box includes a relay, a bus bar connected to the relay, and a case including an attachment portion for the relay, and includes a cover covering a connection portion between the relay and the bus bar. The cover includes a wall portion and an engaging portion that is provided on a part of the wall portion and prevents the cover from coming off by engaging with a part of the attachment portion. The attachment portion includes a stopper portion that suppresses displacement of the part of the wall portion in a direction in which the engaging portion is disengaged.

## Claims

### Claim 1

An electrical connection box including a relay, a bus bar connected to the relay, the electrical connection box comprising:
a case including an attachment portion for the relay, wherein the case includes a first case including the attachment portion;
a second case that covers at least a part of the attachment portion of the first case and is configured to form a single piece with the first case;
a cover covering a connection portion between the relay and the bus bar, wherein the cover includes, on the second case side, an opening through which the bus bar is passed between the relay and the cover;
wherein the cover includes a wall portion and an engaging portion that is provided at a part of the wall portion and prevents the cover from coming off by engaging with a part of the attachment portion, and
the attachment portion includes a stopper portion for suppressing displacement of the part of the wall portion in a direction in which the engaging portion is disengaged.

### Claim 2 (depends on 1)

The electrical connection box according to claim 1, wherein the stopper portion has a spring property for biasing the part of the wall portion in a direction opposite to the direction in which the engaging portion is disengaged.

### Claim 3 (depends on 1)

The electrical connection box according to claim 1, wherein the attachment portion includes a first piece portion and a second piece portion that sandwich the wall portion,
the engaging portion is formed on the first piece portion side of the wall portion,
an engaged portion with which the engaging portion engages is formed on the first piece portion, and
the second piece portion includes the stopper portion.

### Claim 4 (depends on 3)

The electrical connection box according to claim 3, wherein the engaging portion is constituted by a hook that protrudes from the wall portion, and
the engaged portion is constituted by a hole that passes through the first piece portion.

### Claim 5 (depends on 2)

The electrical connection box according to claim 2, wherein the attachment portion includes a first piece portion and a second piece portion that sandwich the wall portion,
the engaging portion is formed on the first piece portion side of the wall portion,
an engaged portion with which the engaging portion engages is formed on the first piece portion, and
the second piece portion includes the stopper portion.