Patent Application
20090170350
1. Field of the Invention
The present invention relates to an electrical connector for electrically connecting an electronic package such as a central processing unit (CPU) with a circuit substrate such as a printed circuit board (PCB).
2. Description of Prior Art
A conventional electrical connector for electrically connecting a CPU (not shown) with a PCB (not shown) generally comprises a housing, a plurality of contacts and a fastening device assembled with the housing for securing the CPU. The fastening device generally comprises a pressing member for pressing the CPU and a retaining member for securing the pressing member. The retaining member is preliminarily assembled onto the housing then mounted onto the PCB, or the retaining member is directly positioned onto the PCB. Moreover, the retaining member may be of an integral manner or an assembled set, which has two or three separated parts. Conventional electrical connector as described above are found in U.S. Pat. No. 7,234,955 issued to Ho on Jun. 26, 2007 and U.S. Pat. No. 7,241,161 issued to Ma on Jul. 10, 2007.
The fastening device of conventional electrical connector is generally formed from metal material, such as iron, austenitic stainless steel, the price of which is usually higher, hence producing a high cost for producing the electrical connector. Furthermore, electrical connection between the fastening device and the housing will be affected because of lower capability of corrosion resistance of the fixed device.
In view of the above, an improved electrical connector that overcomes the above-mentioned disadvantages is desired.
Accordingly, an object of the present invention is to provide an electrical connector for electrically connecting an electronic package such as a central processing unit (CPU) with a circuit substrate such as a printed circuit board (PCB), which can prevent the fastening device from rust.
To achieve the above-mentioned object, an electrical connector in accordance with a preferred embodiment of the present invention is for electrically connecting a CPU with a PCB. The connector includes a housing with a plurality of conductive terminals received therein, a fastening device for securing the electronic package. The fastening device includes a pressing member for pressing and securing the electronic package and a retaining member for securing the pressing member. At least one of the pressing member, the retaining member are produced from ferrite stainless steel material, and has a layer of high temperature resistant organic thin film thereon. Thereby, a lower cost and a higher rustproof effect are achieved.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
Reference will now be made to the drawings to describe the present invention in detail.
Referring to
Referring to
By using capacity of lower cost of the ferrite stainless steel materials, made cost is effectively reduced. In addition, generally, chromic oxide 3 on surface of ferrite stainless steel materials will be destroyed to an incontinuous status when the ferrite stainless steel material is under processed, thus making the ferrite stainless steel prone to rust. In this embodiment, high temperature resistant organic thin film layer 4 is plated on the surface of the surface of the fastening device 2 and can covers said incontinuous area/point. Thereby, a higher rustproof effect is achieved.
While the preferred embodiment in accordance with the present invention has been shown and described, equivalent modifications and changes known to persons skilled in the art according to the spirit of the present invention are considered within the scope of the present invention as defined in the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 200720129846.0 | Dec 2007 | CN | national |
