Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
1999-04-21
2001-04-24
Nguyen, Khiem (Department: 2839)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S188000
Reexamination Certificate
active
06220898
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to an electrical connector, and in particular to an audio jack type connector for transmitting audio signals.
2. The Prior Art
As the computer and information industries develop, the transmission frequency of audio signals increases in computer and information processing systems. Electrical connectors are developed to facilitate transmission of such high frequency audio signals. Examples of such connectors are disclosed in U.S. Pat. No. 5,075,518 and Japanese patent publication No. 5-90863. The device of U.S. Pat. No. 5,075,518 includes three conductive terminal members for electrically engaging a mating connector and comprises a complicated structure. The Japanese patent discloses an audio jack having five conductive terminal members that are not securely arranged therein.
It is thus desirable to have an audio jack with a simple structure capable for effectively securing conductive terminal members therein.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide an audio jack having a simple structure.
Another object of the present invention is to provide an audio jack having conductive terminal members securely fixed therein.
To achieve the above objects, an audio jack in accordance with the present invention comprises a casing member defining an interior space having an opening. A cover is fixed to the casing member to seal the opening. Two sets of conductive terminal members are fixed in the interior space. Each set has a stationary member and a movable member that engages with the stationary member and is selectively disengageable therefrom. A plug receptacle is formed on the casing member for reception of a plug. A passage is defined inside the casing member for guiding the insertion of the plug. The insertion of the plug into the interior space establishes physical/electrical engagement with the movable members and forces the movable members to disengage from the stationary members. The cover has a barb engaging an opening defined in the casing and two resilient legs having barbed ends engaging shoulders formed on the casing thereby securely fixing the cover to the casing member. A positioning pin is provided on the cover to be forcibly fit into a hole defined in the casing member.
REFERENCES:
patent: 4392708 (1983-07-01), Bailey et al.
patent: 4659167 (1987-04-01), Masuda
patent: 5919052 (1999-07-01), Ho
patent: 6056602 (2000-05-01), Wu
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Nguyen Khiem
Zarroli Michael C.
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