| 摘要 |
<p>PURPOSE: To prevent the illegal unlocking by providing a body having a main recess and an auxiliary recess, and providing a cross bar having a homing head which is received in the main recess and interacts with a set pin. CONSTITUTION: When a coding pin 13 of a key is inserted in a hole 11 provided in a cover 10, all set pins 6 are set to specified positions, and coding recesses 8 of the pins 6 are arranged in the same plane. When a cross bar 2 is inserted in an end part of a body 1, and the key is removed, the pins 6 are engaged with an circumferential groove of a homing head 5 of the cross bar 2, and lowered by gravity to lock the cross bar 2.</p> |
