Low impedance probe structure and purpose

Abstract

The low impedance probe structure is used mainly for signal transmission of printed circuit board. The present invention includes gold plating sleeve, needle part, spring and tin plating seat. The hollow sleeve has two opened ends, including one for setting the needle part and the other for setting the seat, and hollow part for the spring to be set in. The spring is soldered to the seat so as to reduce resistance during electric signal transmission and to constitute one low impedance probe structure. The bottom of the sleeve with combined seat is designed as stepped to increase the soldered area between the probe structure and printed circuit board and raise soldering stability.

Description

[technical field] [0001] The invention relates to a low-impedance probe structure, in particular to a low-impedance probe structure and application for lowering resistance to provide a better telecommunication transmission. [technical background] [0002] As we all know, the probe structure has quite a variety of forms, such as figure 1 As shown, referring to the probe structure 10, there is an integrally formed sleeve 100, the sleeve 100 is an open end 102 entering the inner wall of the sleeve 100, the inner wall of the sleeve 100 is coated with a metal layer, and then a compression spring 101 And a needle portion 103 is inserted into an actuating space 110 of the sleeve 100 through the open end 102. Because the existing probe structure 10 has only one open end 102, the electroplated metal layer is accumulated at the bottom of the sleeve 100, so it is easy to cause electroplated metal Layer inhomogeneity, resulting in high resistance. [0003] The above-mentioned traditio...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the probe structure has quite a variety of forms, such as figure 1 As shown, referring to the probe structure 10, there is an integrally formed sleeve 100, the sleeve 100 is an open end 102 entering the inner wall of the sleeve 100, the inner wall of the sleeve 100 is coated with a metal layer, and then a compression spring 101 And a needle portion 103 is inserted into an actuating space 110 of the sleeve 100 through the open end 102. Because the existing probe structure 10 has only one open end 102, the electroplated metal layer is accumulated at the bottom of the sleeve 100, so it is easy to cause electroplated metal layer inhomogeneity, which results in high resistance

[0003] The above-mentioned traditional probe structure 10 is transmitted to the printed circuit board (PCB) 105 by the needle part 103 through the compression spring 101, and finally passes through the sleeve 100 to form a three-piece structure during telecommunication transmission, because the needle part 103, The compression spring 101 and the sleeve 100 are an independent component respectively, so the more components passed through during telecommunication transmission, the resistance generated will be relatively increased, which will affect the quality of telecommunication transmission; and the traditional probe structure 10 and the sleeve 100 are all gold-plated , when passing through the reflow furnace, it is often empty soldering. If the solder 106 is manually soldered, and because gold and tin are different materials, it is easy to generate air bubbles when soldering 106, and it cannot be completely welded, so that the sleeve 100 and the printed board (PCB) )105 Welding is not stable

[0004] Another existing probe structure, such as figure 2 In the probe structure 30 shown, the sleeve 300 is a hollow circular tube with two ends open, one end is a retracted side 302 retracting inwardly, and the other end is a stopper side 321, and the stopper side 321 has a bottom Hole 309, put an insulating gasket 307, seat body 306 into one of the action spaces 310 of the sleeve 300 in turn, close the bottom hole 309 on the stop side 321, and then put a compression spring 301, a needle part 303 into the action space 310, and make the detection end 311 on the needle part 303 exposed outside the end surface of the retracted side 302, and finally riveted and fixed the retracted side 302, this method can completely improve the above problems, but because the retracted side 302 needs to be riveted by external force, which is easy to cause damage to the needle part 303, and this technology needs to add an insulating gasket 307 to prevent the capillary phenomenon of the sleeve 300 from causing solder fluid to flow in, which increases the production cost

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