A pin anchoring structure for button switches has a wiring space in an insulation seat to hold a first pin and a second pin that are separated. Through a pressing action, the first pin and the second pin form an electric connection via a conductive connection member. The second pin has a pressed coupling...http://www.google.com.au/patents/US7253368?utm_source=gb-gplus-sharePatent US7253368 - Pin anchoring structure for button switches
