Spring compression function

Observe all kinds of electric switch, switch the two contact, there must be a head filled with spring, in order to make sure the two s close contact, conduction is good. If poor contact, the contact point of resistance, a current flows through the heat generated by the larger, serious when will be in contact with the metal melt. Two metal column bayonet base have been equipped with spring to contact good;As to the center of the screw base metal as well as all the plug-in socket metal reed, its function is to make both sides close contact, in order to keep to the same good. In the cassette tape, one piece of phosphor bronze reed, use it when the elastic bending deformation to make head closely contact with the tape. In the stapler is a long spiral spring its role on the one hand is top tight staple, on the other hand, when the front of the pin after being launched, can be nailed to the front for comfortable behind the launch, in this way, can automatically to nail a all push to the front, until all the nails out. Many machine automatic feeding, automatic automatic bullet taste of  this function by the spring. In addition, like clothes clip, ball-point pen, pen clip on spend spring compression function on clothes.