# US 5,702,264 A · Connector for electric car

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- Number: US 5,702,264 A
- Document ID: US5702264A
- Status: Granted
- Kind: A
- Application number: 08/651,583
- Filed: 1996-05-22
- Granted: 1997-12-30
- Earliest claimed: 1995-05-24
- Assignees: Yazaki Corporation
- Inventors: Takayoshi Endo; Kazuhisa Ishizaki; Satoshi Yamada; Takeyuki Hamaguchi
- Web page: https://patentgrep.com/patent/US5702264A

## CPC

- H01R 13/6276: {comprising one or more balls engaging in a hole or a groove}
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

There is disclosed a connector for an electric car which can be of a small size, and the cost is reduced, and the efficiency of a fitting operation is enhanced. A female terminal is mounted in a tubular female housing, and a slide cover is slidably mounted on an outer periphery of the female housing. Tapered holes are formed in an electrical contact portion, and ball bearings are received respectively in the tapered holes. Projected portions for limiting outward movements of the ball bearings are formed on an inner peripheral surface of the slide cover. A groove, in which the ball bearings, projected into a bore of the electrical contact portion, are engageable, is formed in the male terminal.

## Claims

### Claim 1

A connector, comprising:
a housing;
a female terminal including an electrical contact portion for receiving an electrical contact portion of a male terminal, said female terminal mounted in said housing, said contact portion of said female terminal having an exposed portion which is exposed out of said housing;
tapered holes formed in said exposed portion;
ball bearings received respectively in said tapered holes;
a slide cover slidably mounted on an outer periphery of said housing, said slide cover having projected portions formed on an inner surface thereof so as to limit outward movements of said ball bearings from said tapered holes when said projected portions are over said tapered holes, and said slide cover having retraction grooves for receiving said ball bearings released by said projected portions when said slide cover slides; and
a groove formed around said contact portion of said male terminal, said groove receiving said ball bearings projected to an inside of said contact portion of said female terminal when said male terminal is inserted into said female terminal.

### Claim 2 (depends on 1)

The connector of claim 1, further comprising a spring wound on an outer periphery of said electrical contact portion, wherein said slide cover is urged forwardly relative to said female terminal by said spring so as to cause said projected portions to be over said tapered holes.

### Claim 3 (depends on 1)

The connector of claim 1, further comprising a spring wound on an outer periphery of said housing, wherein said slide cover is urged forwardly relative to said female terminal by said spring so as to cause said projected portions to be over said tapered holes.

### Claim 4 (depends on 3)

The connector of claim 3, further comprising a flange formed on said male terminal; and
an elastic piece portion formed on the inner surface of said slide cover, wherein said elastic piece portion engages said flange so as to slide said slide cover in an insertion direction of said male terminal as said male terminal is inserted into said female terminal.

### Claim 5 (depends on 4)

The connector of claim 4, said housing having a distal end which engages with said, elastic piece portion when said male terminal is inserted into said female terminal to a position where said tapered holes are provided, wherein said elastic piece portion contacts said distal end of said housing so as to be elastically deformed, said elastic piece portion being disengaged from said flange when insertion of said male terminal into said female terminal is completed.