Method for making plastic terminals holder and its products
A manufacturing method and terminal block technology, which are used in the manufacture of contact boxes/bases, bases/shells, etc., can solve the problems of misalignment of solder balls with circuit board contacts, cracked solder ball contacts, and difficulty in predicting, to avoid The effect of thermal cycle fatigue cracking, telecommunication transmission stability, and material loss reduction
Inactive Publication Date: 2004-02-25
FOXCONN (KUNSHAN) COMPUTER CONNECTOR CO LTD +1
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Problems solved by technology
However, although the above-mentioned soldering method has the advantages of simple handling and easy manufacture of related components, it has the problem of misalignment of the solder balls with the contacts of the circuit board, especially when the electrical connector and the circuit board are heated at the same time, the circuit board and the electrical connection Due to different materials, the expansion degree of the device terminal base is prone to inconsistent phenomenon, and the terminal base has a non-uniform molecular distribution due to the different flow conditions during injection molding. In this way, the thermal expansion situation is more complicated and difficult to predict
In addition, the thermal expansion coefficient of the terminal block has anisotropy in different directions, and there is a great mismatch with the thermal expansion coefficient of the general circuit board base material in these directions. After the board is installed, the solder ball joints will be broken in the thermal cycle fatigue due to the heat generated by the CPU or the change of the external temperature.
Method used
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[0013] FIG. 1 is an exploded perspective view of the structure of the electrical connector when the present invention is used on the electrical connector. As shown in the figure, the terminal base 1 of the electrical connector of the present invention is mainly provided with a movable base 10 and a base 11, both of which are in the shape of a longitudinal plate, and are provided with rows of terminal holes 13, 12 corresponding to each other. Wherein the terminal hole 13 on the moving base is circular, and the corresponding terminal hole 12 on the base is elongated, and the conductive terminal 2 can be accommodated therein to contact with the pin of the central processing unit. In addition, a manipulation device (not shown) is provided between the two bases, by means of which the mobile base 10 can be controlled to move horizontally relative to the base 11, so as to use the different hole shapes of the terminal holes 13, 12 of the two bases to clamp the center. processor pins. ...
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A method for making plastic terminal holder for the electric connector in the shape of long plate is aimed at making the electric connector expanded uniformly in different direction according to expansibility of PCB to ensure precise connection between terminals of connector and connection points of PCB. Before the insulative terminal holder of connector is shaped by ejection moulding, several bosses are additionally made on mould, which are close to the positions where terminal reception holes are arranged to form several rows of blanking holes surrounding the reception holes, so having uniform expansibility when said terminal holder is ejection moulded.
Description
【Technical field】 [0001] The invention relates to a manufacturing method of a plastic terminal block and its products, in particular to an electrical connector in the form of a longitudinally long board, which allows the electrical connector to expand uniformly in different directions to match the expansion coefficient of the circuit board, and A manufacturing method and product for making the electric connector and the contacts of the circuit board precisely bonded. 【Background technique】 [0002] At present, the processors of various types of electronic devices tend to have more functions and smaller volumes. Taking a computer as an example, its central processing unit (Central process unit, CPU) has the requirement of continuously expanding new functions and striving to simplify components. Compared with the change of the central processing unit, its docking connector must adopt a thinner and simpler structure to reduce the occupied volume of the entire CPU module. In t...
Claims
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IPC IPC(8): H01R13/46H01R43/18
Inventor 王卓民萧世伟
Owner FOXCONN (KUNSHAN) COMPUTER CONNECTOR CO LTD