Electrical connector having adapter with hook so as to prevent and reduce distortion of the adapter

An electrical connector (100) adapted for electrically connecting a package to a printed circuit board comprises a base (4), an adapter (3) assembled on the base (4), a plurality of contacts (6) received in the base (4), a frame (1) assembled on the base (4) and moves up and down relative to the base (4), an actuator (2) assembled on the base (4) and moves from a closed position to an opened position when the frame (1) moves up and down, the base (4) comprises a plurality of passageways (4101), the adapter (3) comprises a plurality of receiving holes (31) corresponding to the passageways (4101) of the base (4), the contacts (6) are received in the passageways (4101) and go through the receiving holes (31), a hook (311) is formed on one of the adapter (3) and the base (4) to latch the adapter (3) on the base (4).

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an electrical connector, and more particularly to an electrical connector having adapter with hook so as to prevent and reduce diction of the adapter.

2. Description of the Related Art

Electronic packages, such as integrated circuits (IC) packages, are miniaturized electronic devices in which a number of active and passive circuit elements are located on or within a continuous body of material to perform the intended function of a complete circuit. To ensure reliability in use, the IC packages require a run-in process to test their durability prior to their shipment, which is also referred to as burn-in process. The IC packages are operated at a pre-determined environment, such as exposed to a high temperature for an extended period of time to accelerate potential failure points. This helps to eliminate early failures once the IC packages are sold and/or assembled onto electronic end products. Thus, a burn-in socket is used to serve this purpose, and to electrically connect the IC package with a burn-in board for operation of the IC package at the intended requirements.

Referring toFIG. 1, a conventional electrical connector is used to test a package to a circuit substrate and comprises a base40, an adapter30assembled on the base40, a plurality of contacts60assembled on the base40, a frame10assembled on the base40and a clamping latch26assembled on the frame10. The contacts60each has a first contact portion61extending beyond the top surface of the adapter30to connect to the package and a second contact portion62extending beyond the bottom surface of the base40to connect to the printed circuit board. The frame10moves up and down relative to the base40to urge the clamping latch26to move from the closed position to the opened position.

In use, the frame10is firstly depressed to make it move downwardly and the clamping latch26is urged to the opened position by the frame10, then the package is disposed/placed on the top surface of the adapter30; secondly, the frame10is released and it moves upwardly to make the clamping latch26to move to the closed position, the clamping latch26presses on the package to make it connect with the contacts60, thus a good connection is made between the package and the circuit substrate.

The adapter30is made of plastic and is easy to be deformed, if the adapter30is deformed upwardly, the first contact portion61of the contacts60will not extend beyond the top surface of the adapter30, then the package will disconnect with the contacts60. The electrical connector will not complete the test work normally.

Hence, an improved electrical connector is required to overcome the disadvantages of the prior art.

SUMMARY OF THE INVENTION

An object of the invention is to provide an electrical connector having improved adapter matched with the base to prevent the distortion of the adapter.

To achieve the above-mentioned object, an electrical connector adapted for electrically connecting a package to a printed circuit board, comprises a base, an adapter assembled on the base, a plurality of contacts received in the base, a frame assembled on the base and moving up and down relative to the base, an actuator assembled on the base and moves from a closed position to an opened position when the frame moves up and down, the base comprises a plurality of passageways, the adapter comprises a plurality of receiving holes corresponding to the passageways of the base, the contacts are received in the passageways and go through the receiving holes, a hook is formed on one of the adapter and the base to latch the adapter on the base.

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:

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT

Referring toFIGS. 2-3, an electrical connector100made in accordance with a preferred embodiment of the present invention is adapted for electrically connecting an integrated circuit (IC) package (not shown) to a printed circuit board (not shown). The electrical connector100comprises a base4with a plurality of contacts6received therein, a reinforcement7and an adapter3assembled on the base4, a frame1assembled on the base1and can move up and down relative to the base1, an actuator2assembled on the base and the frame1, and four springs42assembled between the frame1and the base4. The actuator2moves from a closed position to an opened position when the frame1moves downwardly.

The base4comprises a flat body portion41and a plurality of fix portions43extending upwardly from the body portion41. The body portion41comprises a top surface410, a bottom surface413opposite to the top surface410and a plurality of passageways4101impenetrate the top surface410and the bottom surface413. The body portion41also comprises a pair of apertures411among the passageways4101and a recess412near the aperture411. The recess412is set on the bottom surface413. The springs42are located on the four corners of the base4. The base4comprises a first hole415near the spring42and a third hole414near the first hole415.

The frame1comprises a forth hole11corresponding to the third hole414and a plurality of positioning portions12. The actuator2comprises a press portion23to press the IC package and a rear portion22opposite to the press portion23. The two sides of the press portion23are connected to a shaft20by a joint sheet24and the press portion23can rotate relative to the joint sheet24. The shaft20is positioned on the fix portion43of the base4thereby the press portion23is connected to the base4. A pin21goes through the rear portion22of the actuator2and is positioned on the positioning portions12of the frame1. Thereby the rear portion22is positioned on the frame1.

The adapter3comprises a plurality of receiving holes31corresponding to the passageways4101of the base4. The contacts6go through the receiving holes31to connect with the IC package on the adapter3. The adapter3also comprises a window32near a middle portion thereof and a pair of hooks311extending downwardly from the adapter3near the window32. The adapter3also defines a second hole33corresponding to the first hole415of the base4.

Referring toFIGS. 4-5, the assembled electrical connector100is shown. A screw8goes through the second hole33of the adapter3and the first hole415of the base4to assemble the adapter3on the base4. The hooks311go through the apertures411to engage with the base4and the recess412such that the hook311does not go beyond the bottom surface413of the base4. Then, a bolt5goes through the forth hole11of the frame1and the third hole414of the base4to assemble the frame1on the base4. The springs42are located between the frame1and the base4. The actuator2is assembled to the base4by the joint sheet24and is assembled to the frame1by the pin21. The hook311of the adapter3engages with the base4to prevent the distortion of the adapter3, thus the contacts6can go through the receiving holes31to connect with the IC package on the adapter3. In addition, the hook311could also be set on the base4to latch with the adapter3which also can reach the effect.

In use, the frame1is pressed downwardly so that the rear portion22of the actuator2also goes downwardly with the frame1, and the press portion23goes upwardly to the opened position whereby the IC package is put on the adapter3. Then the frame1is released, the rear portion22goes upwardly with the frame1and the press portion23goes downwardly to the closed position to press on the IC package. Thus, a good connection is established between the IC package and the contacts6.

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.