| 摘要 |
PROBLEM TO BE SOLVED: To provide a lock cover that can prevent any illegal unlocking operation done by inserting the hands or wires from outside and can be manufactured at low cost, and improves the security performance of an existing lock device. SOLUTION: The cover 21 comprises a main body cover 23 having a through hole 29 and attached to the case 3 by protruding a thumb turn 9 through the through hole 29 and a thumb turn cap 25 having a circumferential side face 35 about an axis 7, externally and coaxially inserted on the thumb turn 9 unrotatively relatively with each other and protruding one end side of the axis from the through hole 29 in a state of being incapable of being pulled out by inserting a flange 37 extended from the circumferential side face 35 on the other end side of the axis between the case 1 and the cover 23. COPYRIGHT: (C)2003,JPO
|
