CN2362208Y - Crystal circuit socket for plugging bridge terminals - Google Patents

Abstract

The utility model relates to a crystal circuit slot, it mainly is that the terminal pin of terminal is equipped with convex contact site downwards, and this contact site is less than the end of terminal pin, is equipped with on the pedestal with the terminal pin of terminal become the positioning groove of one-to-one and the terminal of terminal pin is taken and is hung in this positioning groove. Therefore, the contact parts of the terminal pins can be kept on the same horizontal plane, the terminal pins cannot be shifted left and right, and the solder paste for welding is not easy to overflow to the side.

Description

Crystal circuit socket for plugging bridge terminals

The utility model relates to a crystal circuit slot.

At present, slots must be provided in integrated circuits for the insertion of electronic parts, for example: square chip slots for chip insertion, taking square chip slots 10 as an example, as shown in Figure 1, chip slots 10 are provided with It is composed of a base body 11 and the terminals 12 on it. The base body 11 is formed into a square shape by plastic, and a row of insertion holes 13 are respectively provided on the four sides for insertion of the insertion parts 14 of the terminals 12 (according to the planting of each terminal 12). Before inserting into the seat body 11, they are connected together by connecting piece 15, after being implanted into the seat body 11, the connecting piece 15 is cut off so that the terminals 12 are separated from each other), and the end pins 16 of the terminals 12 are protruded for insertion Outside the cavity 13, use surface adhesion technology to solder each terminal pin 16 on the circuit board (not shown in the figure), so that the terminal pins 16 of each terminal 12 in the chip slot 10 and the circuit on the circuit board are connected one-to-one. . This seat body 11 center is a concave part 17 that can accept chip (not shown on the figure) to implant, and each pin of this chip can be contacted with the inserting part 14 of a terminal 12, by each terminal 12 on the top of the chip slot 10 For the connecting bridge between the chip and the circuit, in order to ensure that the pins 16 of each terminal 12 are connected one-to-one with each line on the circuit board, it must be ensured that each pin 16 of each terminal is used to connect with each line. On the same horizontal plane, and each end pin 16 must ensure that there is no slight offset, then when the chip slot 10 is placed on the circuit board with a mechanical arm, the end pins 16 of each terminal 12 on it can be aligned with the circuit board at the same time Each circuit, and the pressure contact state is generated simultaneously with each circuit; and then heated and welded with solder paste.

The end pins 16 of each terminal 12 of the chip socket 10 are suspended, and in the process of finishing and being welded between the circuit boards and handling, it is easy to cause the end pins 16 of the terminals 12 to collide with another chip slot. The terminal pins 16 of 10 are hooked and pressed against each other, so that some of the terminal pins 16 of each terminal 12 are high, some are low, and uneven, as shown in Figure 2, so that each terminal pin 16 cannot be connected On the same level, so that when the chip socket 10 is welded on the circuit board using the surface mount technology, it will cause some terminal pins 16 to be unable to eat the empty soldering phenomenon of the solder, making the connection of the circuit problematic.

The end pins 16 of the chip socket 10 are also mixed and prone to offset. As shown in FIG. cannot be used.

Even if the terminal pins of the chip socket are normally on the same level and without offset, it is necessary to prevent overflow soldering during soldering and avoid contact with the solder paste on the adjacent terminal pins, so as to obtain a normal operation. Wafer socket.

In view of this, the purpose of this utility model is to provide a crystal circuit slot for plugging bridge type terminals, which can make the contact between the end pins of each terminal and the circuit board stick to the same horizontal plane, and no deviation will occur. shift.

The purpose of this utility model is achieved in this way: a crystal circuit slot for plugging bridge terminals is composed of a body and a number of terminals, wherein the seat body is provided with rows of insertion holes, and the terminal pins are made of The lower part of the seat body protrudes, and its characteristic is that: the end pin of the terminal is provided with a contact part protruding downward, which is lower than the end of the end pin, and the seat body is provided with a one-to-one correspondence with the end pin of the terminal. positioning grooves, and the ends of the end pins are hung in the positioning grooves.

A hook is arranged on the base and is hooked on the circuit board.

Due to the adoption of the above scheme: the terminal pins are bridge-type, so that the contact parts of each terminal pin are kept on the same horizontal plane, and the ends of each terminal pin extend into a hook shape, and the terminal pins cannot be shifted left and right. In addition, the contact parts of each terminal pin In order to protrude downward and be lower than the end of the end pin, the solder paste for welding is not easy to overflow to the outside.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Figure 1 is a conventional side perspective view of a wafer slot;

Figure 2 is an exploded view of a conventional chip slot;

Figure 3 is a bottom view of a conventional wafer slot;

Fig. 4 is a perspective view of a terminal in a typical embodiment of the present invention;

Fig. 5 is a top view of a typical embodiment of the utility model;

Fig. 6 is an exploded view of a typical embodiment of the utility model;

Fig. 7 is a bottom view of a typical embodiment of the utility model;

Fig. 8 is a longitudinal sectional view of a typical embodiment of the utility model;

Fig. 9 is a side sectional view of a typical embodiment of the utility model;

In the figure: 10. Chip slot 11. Seat body 12. Terminal 13. Insertion hole 14. Insertion part 15. Connecting substrate 16. Terminal pin 17. Recess 20. Chip slot 21. Seat body 22. Recessed part 23. Plug Hole 24. Positioning groove 25. Hook 30. Terminal 31. Insertion part 32. End pin 33. Contact part 34. Terminal 40. Solder paste 41. Circuit board

In this embodiment, the square chip socket 20 is taken as an example. As shown in FIGS. Hold the chip (not shown in the figure), and set a row of sockets 23 around it for the insertion part 31 of the terminal 30 to embed, and the pins 32 of each terminal 30 protrude from the bottom of the seat body 21. The improved features are: : the end pin 32 of the terminal 30 is provided with a downwardly protruding contact portion 33, which is lower than the end 34 of the end pin 32; the seat body 21 is provided with a pair of end pins 32 The positioning groove 24 is to allow the end 34 of each end pin 32 to extend into a hanging shape; then the end pin 32 of each terminal 30 is a bridge type, and its contact portion 33 is tied on the same horizontal plane, so that it is not easy to shift left and right .

The end 34 of the end pin 32 of the above-mentioned terminal 30 is supported by the base body 21, and the other end is fixed by the terminal 30 in the insertion hole 23 of the base body 21, so that the contact portion 33 of the end pin 32 forms a bridge type, because The terminals 30 are standard products, so the contact portions 33 of each terminal 30 are on the same level, and the base body 20 on the circuit board can ensure that the contact portions 33 of each terminal 30 are in contact with the circuit of the circuit board.

Each positioning groove 24 of the above-mentioned seat body 21 is one-to-one correspondence with the end 34 of the upper end 30, and the width of the positioning groove 24 is just to allow the end 34 of the terminal 30 to stretch in, so as to achieve the positioning effect, because each positioning groove The grooves 24 are separated so that the ends 34 of the terminals 30 do not touch each other, as shown in FIG. If there is someone who jumps out, it can be easily dialed into its corresponding positioning groove 24.

When the contact portion 33 of each terminal 30 on the above-mentioned chip socket 20 is soldered to the circuit board, the excess solder paste 40 will be concentrated between the two end walls of the contact portion 33 due to capillary phenomenon, and it is difficult to overflow to the side. Avoid overflow soldering phenomenon, which can improve welding quality.

The above-mentioned terminal 30 is formed by stamping and bending sheet metal, so the contact portion 33 of the terminal leg 32 is elastic. One or two hooks 25 can be arranged on the base 20, and the hooks 25 can pass through the perforation of the circuit board. As shown in Figure 10, the seat body 21 is fixed on the circuit board 41, during which, because the contact part 33 with elasticity on the terminal 30 and the circuit of the circuit board 41 produce tight pressure contact, form contact conduction, and do not need to be reworked. Welding operation, this kind of combined method of fixing the seat body 21 on the circuit board 41 with the hook 25 and avoiding welding.

To sum up, the utility model can ensure that the contact parts 33 of each terminal 30 must be on the same horizontal plane, and each has its own alignment position that is not easy to shift, and is welded on the circuit board by using surface adhesion technology, and the solder paste 40 is not Lateral overflow welding will occur, improving welding quality.

Claims (2)

1. A crystal circuit slot for plugging bridge terminals is composed of a base body and a number of terminals, wherein the base body is provided with rows of insertion holes, and the terminal pins protrude from the bottom of the base body. The feature is: the end pin of the terminal is provided with a contact part protruding downward, which is lower than the end of the end pin, and the seat body is provided with a positioning groove corresponding to the end pin of the terminal one by one, and the end of the end pin Hang in the positioning groove. 2. The crystal circuit slot for plugging bridge terminals according to claim 1, characterized in that: the base body is provided with a hook, and hooked to the circuit board.

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