Parts made of elastic materials for vending machine accessories deform under the action of external force, and return to their original state after removing the external force. Also known as quot; Spring quot;. It is generally made of spring steel. The types of springs are complex and diverse, according to the shape, mainly coil springs, scroll springs, leaf springs, special-shaped springs, etc. Grounding spring type" is a part used when testing literary noise, with the aim of shortening the ground wire and reducing parasitic interference from the ground wire. ”

The part of the spring connected to the grounding wire will produce a high temperature, indicating that there is a discharge phenomenon, and the discharge will cause microscopic defects on the surface of the spring, and this microscopic defect will gradually expand under the action of alternating load, and finally break. The spring is heated to a certain temperature, will affect its elasticity, and even produce segregation, it will be easy to break, of course, as you said, the ground wire is relatively thin, may not be too hot spring too much, the temperature will not be too high when welding, so that it will not affect its elasticity, and will not break. Moreover, electric sparks will occur due to poor contact during welding, and if there is no burn spring, there will be no problem.