Patent Application
20120003846
1. Field of the Invention
The present invention relates to an electrical connector assembly, especially to an electrical connector assembly having electrical connector with low profile and processor having cone pins to make it be assembled to the electrical connector with little force.
2. Description of the Related Art
U.S. Pat. No. 6,135,784 issued to Pei on Oct. 24, 2000 discloses a LIF Pin Grid Array (PGA) electrical connector. The electrical connector comprises an insulative housing with a plurality of contacts received therein and a processor assembled on the insulative housing. The processor includes a plurality of pins connecting with the contacts. The contact comprises a pair of spring arms. When the processor is assembled to the insulative housing, the pin of the processor exerts a force on the two spring arms pushing the spring arms move away from each other, and finally the pin connect with the spring arms. Thus, an electrical connection is established between the processor and the electrical connector. However, the number of the contacts becomes more and more, and the force that exerts on the processor becomes larger and larger. Thus, it is difficult to assemble the processor and the pin is easily deformed.
U.S. Pat. No. 6,544,064 issued to McHugh on Apr. 8, 2003 discloses a ZIF Pin Grid Array (PGA) electrical connector. The electrical connector comprises a base with a plurality of contacts received therein, a cover assembled to the base and a lever assembled between the cover and the base. When the processor is assembled to the electrical connector, the processor and the cover are in the first position that the pins of the processor disconnect with the contacts. Then rotate the lever to make the cover move relative to the base and the processor also moves with the cover to a second position that the pins connect with the contacts. When assembled the processor to the electrical connector, this type of electrical connector is easy to operate and can prevent the deformation of the pins. However, the cover and the lever occupy more space, which violates the development trend of the minimization of the electrical connector.
Hence, an improved electrical connector assembly is required to overcome the disadvantages of the prior art.
An object of the invention is to provide a low profile electrical connector and can protect the pin of the processor.
To achieve the above-mentioned object, an electrical connector assembly for mounting to a printed circuit board comprises a plurality of contacts and a processor, the contact comprises a base portion, a pair of contacting portions and a solder portion extend from the base portion, the processor comprises a plurality of pins each includes a cylinder portion and a cone portion extending downwardly from the cylinder portion, the bottom end of the cone portion is thinner than the top end thereof to guiding the pins inserted into the contacts, the contacting portions contacts with the cone portion respectively.
Other features and advantages of the present invention will become more apparent to those skilled in the art upon examination of the following drawings and detailed description of preferred embodiments, in which:
Reference will now be made in detail to the preferred embodiment of the present invention.
Referring to
Referring to
When the processor 1 is assembled to the contacts 3, the bottom end of the cone portion 111 leads the cone portion 111 to go into the space between the contacting portions 34 easily with less force and can protect the pins 11 from being deformed. In this process, the connecting portions 32 also expand to provide a good holding force to hold the pin 11. At the same time, the stopper portions 33 move to each other to prevent the excessive downwardly movement of the pin 11. When the cone portions 111 of the pins 11 connect with the contacting portions 34, each additional portion 341 provides an additional contacting point between the pin 11 and the contact 3.
Referring to
When the processor 1 is assembled to the contact 5, the bottom end of the cone portion 111 and the chamfer portion 521 lead the pin 11 to go into the through hole 53, the contacting portions 52 are deflected and finally connect with the pin 11. Thus, an electrical connection is established between the processor 1 and the contacts 5. The spring arms 51 are soldered to the substrate 2 through solder balls 4, and the solder balls 4 are positioned between the pair of spring arms 51.
Referring to
In this embodiment, the space between the spring arms 34 is larger than the whole first cone portion 112′ and is smaller than the second cone portion 113′. When the processor 1′ is assembled to the contacts 3, the first cone portion 112′ inserts into the space with zero insertion force and leads the second cone portion 113′ to connect with the contacting portions 34 with little force. Thus, the pins 11′ of the processor 1′ are protected.
While the present invention has been described with reference to preferred embodiments, the description of the invention is illustrative and is not to be construed as limiting the invention. Various of modifications to the present invention can be made to preferred embodiments by those skilled in the art without departing from the true spirit and scope of the invention as defined by the appended claims.
