# US 7,612,646 B2 · Fuse cavity structure and electric connection box

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,612,646 B2
- Document ID: US7612646B2
- Status: Granted
- Kind: B2
- Application number: 10/542,067
- Filed: 2004-04-02
- Published: 2006-06-08
- Granted: 2009-11-03
- Earliest claimed: 2003-04-04
- Assignees: Yazaki Corporation
- Inventors: Katsuhiro Kubota
- Web page: https://patentgrep.com/patent/US7612646B2

## CPC

- H01H 85/2035: {for miniature fuses with parallel side contacts}
- H01H 85/2045: {Mounting means or insulating parts of the base, e.g. covers, casings}
- H01H 85/47: Means for cooling
- H01H 2085/2065: {with base contacts adapted or adaptable to fuses of different lenghts; bases with self-aligning contacts; intermediate adaptation pieces}
- 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

Fuse cavity structure includes fuses 10, 20 in which each of fusible elements 17, 27 for protecting a circuit from overcurrent is located between terminals 15 or 25, and a housing 59 in which the fuses 10, 20 are mounted; a part of a wall 65 of the housing 59 which partitions the fuse 10, 20 and fuse 10, 20 is removed thereby to form a notch 65H in the wall 65; and space is provided between the fuses 10 or 20. The notch 65H is formed by notching the wall 65 corresponding to at least a part of the fusible portion 17, 27. The fuse 10 has a head portion 13 and jig engagement portions 14a. A groove 80 corresponding to the head portion 13 and the jig engagement portions 14a is provided within the housing 59. A wide-width portion is provided at the groove 80 in correspondence to the width of the head portion 13 of the fuse 10, and a narrow-width portion is provided at the groove 80 in correspondence to the width of the jig engagement portion 14a of the fuse 10 which is narrower than the head portion 13. Another fuse 20 having a different configuration from the fuse 10 is provided at the housing 59 in place of the fuse 10. A positioning portion for making it possible to assemble the another fuse 20 to the housing 59 in a normal state is provided at the groove 80. Such a fuse cavity structure is used for an electric connection box.

## Claims

### Claim 1

A fuse cavity structure, comprising:
a housing provided with a plurality of fuse attachment portions divided by partition walls which extend substantially perpendicular from a bottom surface of the fuse attachment portions, a large-sized fuse and a small-sized fuse shorter than the large-sized fuse being attachable to the fuse attachment portions,
wherein each of the fuse attachment portions are adapted to accommodate the large-sized fuse or the whole small-sized fuse, such that both fuse sizes are accommodated interchangeably in each fuse attachment portion,
wherein a part of the partition wall which is opposed to a part of the small-sized fuse accommodated in the fuse attachment portion is cut to form a notch, the notch communicating adjacent fuse attachment portions to each other,
wherein the notch is formed as a through-hole that is entirely bounded by the partition wall and the bottom surface of the fuse attachment portion.

### Claim 2

An electric connection box comprising a fuse cavity structure, the fuse cavity structure including:
a housing provided with a plurality of fuse attachment portions divided by partition walls which extend substantially perpendicular from a bottom surface of the fuse attachment portions, a large-sized fuse and a small-sized fuse shorter than the large-sized fuse being attachable to the fuse attachment portions,
wherein each of the fuse attachment portions are adapted to accommodate the large-sized fuse or the whole small-sized fuse, such that both fuse sizes are accommodated interchangeably in each fuse attachment portion,
wherein a part of the partition wall which is opposed to a part of the small-sized fuse accommodated in the fuse attachment portion is cut to form a notch, the notch communicating adjacent use attachment portions to each other, and
wherein the notch is formed as a through-hole that is entirely bounded by the partition wall and the bottom surface of the fuse attachment portion.