Electrical connectors – With coupling movement-actuating means or retaining means in... – Including compound movement of coupling part
Reexamination Certificate
2000-03-23
2001-08-28
Paumen, Gary F. (Department: 2833)
Electrical connectors
With coupling movement-actuating means or retaining means in...
Including compound movement of coupling part
Reexamination Certificate
active
06280224
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a ZIF PGA socket connector having a cam actuator, and particularly to a connector using a cam actuator which has a metallic inserted plate for use with.
U.S. Pat. No. 4,496,205 ('205 patent) and Taiwan Patent No. 85107705 disclose a type of ZIF socket. The socket in the '205 patent is for use in mounting a PGA chip onto a printed circuit board (PCB) and comprises a base and a cover mounted onto the base. The base and the cover each define a cam box therebetween, and a cam means is engaged with both cam boxes to rotate therein to drive the cover, whereby the cover slides on the base. Since the cover and base are both made of plastic, after a period of use of the socket, the cam box become enlarged because of the wear between the cover and base and the cam means. After this happens, the cam means can no longer drive the cover accurately. In a word, the socket has a durability problem. In addition, the cam means may cause the cam box of the cover to curl up during the pivot; this further prevents engagement between the pins of the connector and the contacts of the PGA chip. Hence, an improved electrical connector is required to overcome the disadvantages of the prior art.
BRIEF SUMMARY OF THE INVENTION
The object of the present invention is to provide an electrical connector having a more durable cam actuator and base which prevents wear on the cam actuator and warpage of the base.
Accordingly, an electrical connector of the present invention comprises a base, a cover slidably supported on the base, a ring insert molded in the cover a cam box insert molded in the base, a cam actuator extending through the ring and the cam box, a metallic inserted plate, and a washer. The base has a plurality of passageways to retain a plurality of contacts therein. The cover has a plurality of holes to retain a plurality of pins of a PGA chip mounted thereon. The metallic inserted plate is insert molded in the base, and comprises a base portion and a pair of legs extending from the base portion. An elongated aperture is defined in the base portion for extension of the cam actuator therethrough. The aperture is located above the cam box and extends in a direction perpendicular to the direction of movement of the cover. In addition, a plurality of cavities are defined in the metallic inserted plate, and a plurality of corresponding bulges are formed on the base which holding the cavities and firmly fix the metallic inserted plate firmly to the base.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 6071140 (2000-06-01), McHugh et al.
patent: 6086402 (2000-06-01), Huang
Chung Wei Te
Hon Hai - Precision Ind. Co., Ltd.
Paumen Gary F.
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