| 摘要 |
PURPOSE:To prevent lock levers from coming off by wrong action by providing a lock plate, for locking the lock levers in the lock state, at a connecting fitting provided with lock rings, locked to the lock levers, formed at both ends thereof. CONSTITUTION:A bulge part 30 is protruded in the intermediate position of connecting levers 24, 24 provided at the axial center periphery of a connecting fitting 20 with lock rings 22 formed at both ends thereof. A stud 31 is erected radially outward at the bulge part 30, and a lock plate 32 is rotatably supported and fixedly fastened to the apical face of the bulge part 30 by a butterfly nut 33. Both end part of the lock plate 32 are to be semi-circular and brought into contact with recessed faces formed at the end part upper faces of lock levers 12, thus fixing the positions of the lock levers 12. In other words, when the lock levers 12 are engaged with the rings 22, the lock plate 32 is brought into contact with the lever upper faces and fastened, so that the levers 12 are fixed. Accordingly, even if the other end part 12b of the lever 12 is stepped on by wrong action, its disengagement from the ring 22 is prevented. |
