| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve such a problem that, when an inner frame including a game board and the like is opened from a front face of a game machine, since a load is applied to a key, the key is broken and a tip end of the broken key is left in a cylinder lock, however, it is difficult to remove the residual part from the inside of the cylinder and many troublesome operations such as disintegrating the cylinder lock are required.SOLUTION: In a cylinder lock 36 including an extrusion device 98 mounted therein, when a key 91 is broken with it inserted therein and a tip end 91a of the broken key 91 is left therein, an extrusion part 98a can be moved to a key hole 39a by force of restitution of a compression spring 98b provided in the mounted extrusion device 98. Consequently, the residual tip end 91a of the broken key 91 can be extruded to the key hole 39a side.</p> |
