| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize the axial direction, and to decrease the number of parts. SOLUTION: A malfeasant preventive plate 6 with a section to be retained 6a is installed movably to a key rotor 3 mounted into a rotor case 1. An inclined section 9 and a retaining section 10 are formed to the rotor case 1. When a key is rotated and operated in the direction of the arrow B from the place of 'ACC', the side end of the section to be retained 6a of the malfeasant preventive plate 6 is retained to the retaining section 10, and reaching to the place of 'LOCK' of the key rotor 3 is prevented, but the section to be retained 6a slides the inclined section 9 in the axial direction when the key rotor 3 is pushed in by the key, the malfeasant preventive plate 6 is moved in the opposite direction of the arrow A, the section to be retained 6a reaches a place, where the section to be retained 6a is not engaged to the retaining section 10, and revolution in the direction of the arrow B of the key rotor 3 is permitted. |
