Patent ID: 7017956
Filing Date: 2006-03-28
Classification: E05B,E05C,Y10S,Y10T

Abstract:
1. A lock mechanism for locking a movable member to a base member, comprising: a cam fixed on the base member, and having a projection with a roughly heart shape and a swing groove formed around the projection, a swing member provided on the movable member to move laterally and vertically relative to the cam, and having a tip and a pin close to the tip for tracing the swing groove, and a spring member as auxiliary means provided on the base member and contacting the swing member while the pin is tracing the swing groove so that the auxiliary means allows the swing member to move properly, said spring member being located adjacent to the cam and contacting the tip of the swing member when the swing member is moved close to the projection, to thereby urge the swing member from one side of the projection toward the other side of the projection.