Wire spring contact
The wire spring contact is a component in electrical engineering based on the plug / socket principle .
It is an invention by Otto Dunkel (1891–1971). Initially as a spring-loaded contact pin , the patent was granted on November 12, 1938. The so-called wire spring bushing is more common today.
functionality
Principle: Inside a solid metallic socket, there are many springy, barrel-shaped, arched wires . These are attached so that they can extend parallel to the longitudinal axis independently of one another when the counterpart of the component, the pin , is inserted.
As a result of the arrangement, in the inserted state, approximately the same pressure is achieved over the entire contact-making spring length to the counter element, the pin. In a socket for a pin diameter of 1.02 mm there are about 15 independently resilient wires. The larger the diameter of the components, the larger the number of resilient wires. There are many points of contact and thus a large contact area for power transmission.