US Patent 11187722 Probe pin and electronic device using the same

A probe pin includes a coil spring extending and contracting along a center line, a first contact disposed on one side of the center line and having a rectangular cross section, and a second contact disposed on the other side of the center line and having a rectangular cross section. The first contact and the second contact are supported so as to be reciprocable via the spring coil and are electrically connected to each other. In particular, a contact surface of at least one of the first contact and the second contact is an inclined surface inclined so as to descend along a thickness direction.