| 摘要 |
<p>PURPOSE:To exactly detect the condition of door by a method in which a magnet is provided to a cam to be deformed rotationally with rotation of a latch pivotally attached to the lock body side and a Hall IC provided on the lock body side in a fitting position adjustable manner is operated. CONSTITUTION:In the recession 2 of a lock body 1, a latch 3 is pivotally supported on a shaft 4, a ratchet 5 is pivotally supported by a shaft 6, and a cam 14 is supported by a shaft 15. The cam 14 has S and N poles 18 and 19 and a Hall IC 20 on the outside. When door is opened, the latch 3 is clockwise moved by a spring 7, the cam 14 is turned to the upper position by the cam face 16, and IC 20 is faced with N-pole 19 to output positive signals. When the door is closed, the latch 3 is counterclockwise turned, IC 20 is faced with S-pole to output negative signals. Also, when the door is completely closed, IC 20 detects nonpole to output 0 signal. The condition of the door can thus be exactly sensed.</p> |
