Socket

A socket is adapted for electrically connecting a chip module and a printed circuit board, and the socket includes a main body having a base and a plurality of contacts arranged in the base for resiliently contacting with the chip module, wherein the base includes a foundation and two lateral sidewalls extending from the foundation; an upper lid movably connecting to the main body; and a lock member securing the upper lid and the main body together. Each of the two lateral sidewalls has a projection disposed on at least one corner of an upper surface thereof for abutting against the upper lid.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a socket, and more particularly to a socket adapted for connecting a chip module to a printed circuit board.

2. Background of the Invention

A conventional socket is generally used for connecting a chip module and a printed circuit board for electrical connection. The conventional socket, shown inFIGS. 1 to 3, includes an upper lid1and a lower lid2movably connected to each other, and further includes a base3received in the lower lid2for supporting a chip module (not shown) and a lever4pivoted to the upper lid1for securing the upper and lower lids1and2, wherein the base3has a plurality of contacts (not shown) for electrically connecting the chip module.

When the chip module is disposed in the base3, the upper lid1is covered, and the lever4is suppressed, the chip module can electrically connect to the socket. However, a bottom of the lower lid1will warp upwardly due to the unbalanced nature of the force acting upon it, so as to prevent the base3afrom being deformed. Therefore, the chip module will not connect to the socket very well.

SUMMARY OF INVENTION

A socket is provided to electrically connect firmly and securely to a chip module.

A socket is adapted for electrically connecting a chip module and a printed circuit board. The socket includes a main body having a base and a plurality of contacts arranged in the base for resiliently contacting the chip module, wherein the base includes: a foundation and two lateral sidewalls extending from the foundation; an upper lid connecting the main body movably; and a lock member securing the upper lid and the main body. Each of the two lateral sidewalls has a projection disposed on at least one corner of an upper surface thereof for abutting against the upper lid.

To provide a further understanding of the invention, the following detailed description illustrates embodiments and examples of the invention. Examples of the more important features of the invention have thus been summarized rather broadly in order that the detailed description thereof that follows may be better understood, and in order that the contributions to the art may be appreciated. There are, of course, additional features of the invention that will be described hereinafter which will form the subject of the claims appended hereto.

DETAILED DESCRIPTION OF THE EMBODIMENTS

With respect toFIGS. 4 to 6, a socket according to the present invention is provided for electrically connecting a chip module5to a printed circuit board (not shown). The socket includes a main body10, an upper lid20connecting with the main body10movably, and a lever30secured to the main body10by the upper lid20.

The main body10includes a base11, which has a plurality of contacts (not shown) arranged therein for resiliently connecting with the chip module5, and a lower lid12containing the base11for supporting the chip module5. The lower lid12has a protrusion120arranged at a side thereof and adjacent to an end thereof in an outward manner. The base11includes a foundation110and four lateral sidewalls111extending upwardly from a periphery of the foundation110. Each of two opposite lateral sides111includes a projection112formed on an upper surface thereof. The two projections112are arranged in a diagonal manner. One of the two projections112corresponds to the protrusion120of the lower lid12.

The upper lid2is pivoted to the lower lid10and suppresses the chip module5to the base11via an end arranged with the protrusion120. The lever30pivots to an opposite end of the lower lid12, and includes a pivot portion31and an operation portion32. The pivot portion31pivots to the lower lid12. The operation portion32extends from an end of the pivot portion31vertically. The operation portion32has a free end that can be latched to the protrusion120.

After the steps of arranging the chip module5on the base11, the upper lid20can be pressed and fastened by the lever30to the protrusion120of the lower lid12, the lower lid12will warp upwardly due to an upward force and the base11received in the lower lid12will also warp upwardly. However, the projections112of the lateral sidewalls111of the base11will abut against a lower surface of the upper lid20, thereby preventing the base11from warping upwardly and ensuring an excellent electrical connection between the socket and the chip module5.

Actually, the lower lid12can be omitted in the present invention. Instead the base can include another protrusion formed at a side and adjacent to an end thereof outwardly. The lever30includes a pivot portion pivoted to an end of the base31and an operation portion32extending vertically from the pivot portion. The operation portion has a free end latched with the protrusion. The projections can be arranged at a position corresponding to the protrusion and at another position diagonal to the first one and arranged on an opposite corner. In addition, the lock member is not limited by the lever. A screw or another device can be provided for securing the upper lid and the main body together.

It should be apparent to those skilled in the art that the above description is only illustrative of specific embodiments and examples of the invention. The invention should therefore cover various modifications and variations made to the herein-described structure and operations of the invention, provided they fall within the scope of the invention as defined in the following appended claims.