1. Field of the Invention
The present invention relates to the art of electrical connectors. In detail, the present invention relates to a central processing unit (CPU) electrical connector/socket.
2. Background of the Invention
CPU sockets are widely used for establishing electrical connection between CPU and a printed circuit board (PCB)/motherboard. Therefore, CPU sockets are mounted on motherboards and hold CPUs execution of programs. Several types of CPU sockets are available with different structures. For example, type of Pin Grid Array (PGA) socket, which is found in U.S. Pat. No. 6,663,409 issued to Liao on Dec. 16, 2003.
A PGA socket generally comprises a base, a moveable cover mounted on the base, an actuator arranged between the base and the cover and a plurality of contacts received in the base. The base defines a plurality of passageways and the cover defines a plurality of through holes corresponding to the passageways. When the PGA socket connects the CPU to the PCB, the CPU is disposed upon the cover with its pins inserted into the through holes of the cover and the passageways of the base. The pins will contact with the contacts after a movement of the cover under a force from the actuator.
Because the pins of the IC pass through the through holes of the cover for positioning the IC, it is important to ensure proper positioning. Moreover, while such a connector is in use, improper position of the IC pins damage the contacts. As a result, the reliability of the electrical connection may be affected. Moreover, the passageway generally requires a large space for allowing the pins inserted into.
In view of foregoing, a new electrical connector is needed to overcome the above-mentioned shortcomings.
Accordingly, an object of the present invention is to provide an electrical connector that can provides reliable electrical connection between the contacts and the pins of the CPU.
To achieve the above-mentioned object, in a preferred embodiment of the present invention, the present invention provides an electrical connector for electrical connecting an IC package having a plurality of pins to a PCB. The electrical connector comprises a base defining a plurality of passageways, a plurality of contacts received in the passageways, and a cover moveable relative to the base from a first position to a second position. The cover defines a plurality of through holes corresponding the passageway. The contacts each have a contacting portion disposed in the through hole. When the cover is at the first position, the pins of the con IC package do not contact with the contacting portions of the contacts; and when the cover is at the second position, the pins contact with the contacting portions in the through holes of the cove.
Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
Reference will now be made to accompany drawings to describe the present invention in detail.
Referring to
The electrical connector 1 comprises base 10, a plurality of contacts 12 received in the base 10, and a cover 14. The base 10 has a mating surface 100 with a plurality of passageways 102.
The cover 14 is moveably mounted upon the base 10, defining a bottom surface 140 corresponding to the mating surface 100 of the base 10 and an upper surface 142 opposite to the bottom surface 140. A plurality of through holes 146 extends through both the upper surface 142 and the bottom surface 140. Each of the plurality of through holes 146 is configured to ensure a pin 20 of the IC package 2 to be inserted into. The plurality of through holes 146 each define a guiding slot (not labeled), which is formed by a chamfer arranged at a position near the upper surface 142.
Each of the plurality of contacts 12 is received in a passageway 102, and has a base portion 120 for securing the contact 12 in the passageway 102, a resilient arm 122 extending from an upper end of the base portion 120 and a soldering portion 124 extending from a lower end of the base portion 120. The resilient arm 122 comprises a connecting portion 1220 extending from the upper end of the base portion 120, a contacting portion 1222 extending from a free end of the connecting portion 1220. The contacting portion 1222 is predisposed in the through hole 146 of the cover 14. The contacting portion 1222 is adjacent to a predetermined area of inner wall of the through hole 146 and a space ensuring the pin 20 of the package 2 to be inserted into is defined between the contacting portion 1222 and other portion of the inner wall of the through hole 146. The base portion 120 and the contacting portion 1222 are located at the same side of the connecting portion 1220. The connecting portion 1220 is offset relative to the through hole 146 of the cover 14 and located between the base 10 and the cover 14.
It is needed to point out; an actuator (not shown) will be arranged between the base 10 and the cover 14. As a conventional PGA socket, the actuator may be an eccentric cam or an operating lever. The actuator is used for driving the cover 14 to slide relative to the base 10 from a first position to a second position, which is well know to a people having ordinary skill in the art.
The IC package 2 is mounted upon the upper surface 142 of the cover and has a plurality of pins 20 corresponding to the through holes 146.
Referring to the
According to the preferred embodiment of the present invention, the pins 20 of the IC package 2 contact with the contacting portion 1222 of the contact 12 in space of the through hole 146 of the cover. The pins 20 do not need to be inserted into the passageway 102. Thus, the contacts 12 do not need a large cavity arranged in the passageway 102. Thereby, electrical connection between the pins 20 of the IC package 20 and the contacts 12 can be conveniently and accurately established.
Although the present invention has been described with reference to the accompanying drawings, it is not to be construed as being limited thereto. Various alterations and modifications can be made to the embodiments without in any way departing from the scope or spirit of the present invention as defined in the appended claims. Such modifications and alterations that may be apparent to a person skilled in the art are intended to be included within the scope of this invention as defined in by the accompanying claims.
Number | Date | Country | Kind |
---|---|---|---|
200720042945.5 | Aug 2007 | CN | national |