RING METAL

PURPOSE:To provide an automatic lock-type ring metal of comparatively simple structure with outstanding easy of operation and high reliability. CONSTITUTION:A ring metal is composed of an elastic element case body 10, a functional serrated plate part for holding a ring engeged in the elastic element case body 10 and an operating part 30 which makes the functional serrated plate part 20 refractive. In addition, the operating part consists of an operating lever 40 which makes the functional serrated plate part refractive and a lock lever 50 attached to the operating lever 40 in elastically displaceable manner. In addition, a hook part 54 with an inclined sliding surface 54a and a pressing part 56 are provided at a specified position of the open displaced end of the lock lever against this lever. Subsequently, the lock lever has the hook part and the pressing part engaged elastically with the lower surface of a top plate 14 and the upper surface of the functional serrated plate part to achieve automatic locking.