Trigger switch

Abstract

A trigger switch comprises a moving contact, a pre-closing contact, a fixed contact, a fixed contact binding post, an elastic insulation support, a capacitor A side lead, a capacitor, a capacitor B side lead, a moving contact binding post, a moving contact shell hinged hole, a hinged support, a button, a button insulation connecting rod, a button connecting rod movable hole, a shell, a spring, a button connecting rod hinged hole, a moving contact connecting body, a moving contact middle hinged hole, a load, a lead from a power source to the moving contact binding post, a lead from the fixed contact binding post to a load B side, a lead from the load A side to the power source, a power source A binding post and a power source B binding post. According to the trigger switch, on the basis of the capacitor capacitive reactance formula that Xc=1 / 2 pi fc, by means of the voltage reduction current limitation principle of the capacitor, the contact voltage of the contacts is lowered fundamentally, so that the contact electric spark strength is lowered, and contact points are protected.

Description

technical field [0001] The invention relates to the technical field of jog switches, in particular to a trigger switch. Background technique [0002] In power control applications, electrical components such as switches and contactors are usually used to control the on-off of the current. The contact resistance of the connected and disconnected contacts increases due to electric sparks. The larger the electric sparks, the easier it is to cause the contact surface Resistance is generated, and this spark even burns out the contacts, causing the circuit to malfunction. The National Patent Office has disclosed the patent CN200810066620 double-contact switch technology, which is essentially a mechanical way to reduce contact sparks, and does not fundamentally solve the cause of contact sparks generated by contact contacts. [0003] According to the characteristics of the capacitor, the present invention utilizes the voltage-reducing and current-limiting principle of the capacito...

AI Technical Summary

Problems solved by technology

The National Patent Office has disclosed the patent CN200810066620 double-contact switch technology. This technology is essentially a mechanical way to reduce contact sparks, and does not fundamentally solve the cause of contact sparks generated by contact contacts.

Images