Conductive combined foam and conductive probe assembly

Abstract

The invention relates to the technical field of detection equipment, and particularly discloses conductive combined foam and a conductive probe assembly. The conductive combined foam comprises a foambody and conductive cloth. The conductive cloth is attached to the surface of the foam body and is used for realizing electric connection between a detection circuit board and a to-be-detected piece.According to the conductive combined foam and the conductive probe assembly, resistance detection of the to-be-detected piece can be completed, the surface of the to-be-detected piece cannot be damaged and the service life is long.

Description

Technical field [0001] The invention relates to the technical field of detection equipment, in particular to a conductive combined foam and a conductive probe assembly. Background technique [0002] Many electronic products under test need to have good electrical conductivity, such as smart bracelets with the function of measuring heart rate, etc. The bottom cover that fits the human wrist needs to have good electrical conductivity (that is, it should have relatively high conductivity). Small resistance), otherwise the measured heart rate deviation will be larger. See figure 1 , The current resistance detection process is as follows: [0003] ① Make the positive electrode probe 101 and the negative electrode probe 102 press the two ends of the test piece 2 respectively; [0004] ② Detect the resistance value between the positive probe 101 and the negative probe 102 through the detection circuit board 3. [0005] The problem with the above process is: in step ①, the current positive ...

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Problems solved by technology

[0005] The problem with the above process is that: in step ①, the current positive and negative probes are both PIN needles, and the PIN needle is a rigid metal structure, and the area of ​​the end that is in contact with the DUT is small. Larger, easy to leave indentation on the surface of the test piece, or even damage the test piece

[0006] At present, there are solutions on the market that use conductive silica gel or gold-plated conductive cotton instead of PIN needles as probes to compress the part to be tested, but conductive silica gel is a mechanism that uses glue to paste metal powder on silica gel. Repeated extrusion is easy to drop the powder and affect the measurement results. It is difficult to use for a long time; the recovery ability of gold-plated conductive cotton is poor, it is easy to not rebound after repeated extrusion, and the service life is short

[0007] Therefore, it is necessary to improve the existing probes to solve the problem that using traditional PIN needles as probes is easy to damage the DUT or has a short service life

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