poor quality of common pogo pin

　　Summary and analysis of common adverse phenomena of Pogo pin

　　1. The pressing needle is not jammed

　　Causes of defects:

　　a) Poor necking of riveted products. b) The needle tube hole is rough. c) Multispring

　　2. Poor spring

　　Poor structural design

　　3. Poor Pogo instant break

　　Poor contact of needle head/needle tube, excessive fit clearance

　　4. Poor Pogo pin heating and fusing

　　Spring structure error, design problem

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