Key-operated cylinder lock.

摘要

A key-operated cylinder lock includes a rotor casing; a rotor having a key inserting channel, which is rotatably arranged in the rotor casing; a permanent magnet provided in the rotor near the key inserting channel; a magnetic detecting element provided in the rotor casing in such a manner that the magnetic flux of the permanent magnet acts on the magnetic detecting element; a magnetic shutter swingably provided in the rotor in such a manner as to open and close the key inserting channel, the shutter being made of a magnetic material and adapted to interrupt the application of the magnetic flux of the permanent magnet to the magnet detecting element when the shutter is swung to a channel closing position to close the key inserting channel by a key inserted into the key inserting channel; and a spring member provided in the rotor, which is adapted to urge the shutter towards the channel closing position <IMAGE>