| 摘要 |
<p>PURPOSE:To reduce the number of components by loading an about 'L' shaped key detection lever in a slot provided to a flange section of a key cylinder and moving the key cylinder in lengthwise direction in case of key insertion to detect a key insertion. CONSTITUTION:A stopping rod 20 and others are loaded on a key cylinder 16 fixed to a turning member 23 to insert it in a housing case 12, a key detection lever 33 is loaded in a slot 30 of a flange section 15 of the key cylinder, and the case 12 is housed in a casing 11 to mount a cover 13 thereon. When a key is inserted in a keyway 26 of the cylinder 16, it comes into contact with one end of the detection lever 33, the other end of the lever 33 pushes the cover 13 to move the cylinder 16 inward, and the tip 23a of the turning member 23 changes a key detection switch to detect a key insertion. When the key is pulled out, the tip 58 of the stopping rod 20 comes out from a groove section 60 of a locking rod 18, and a key drawing is detected.</p> |
