Patent ID: 7895868
Filing Date: 2011-03-01
Classification: E05B,Y10T

Abstract:
1. A cylinder lock comprising: a sleeve having a plurality of locking holes arranged parallel to an axis of said sleeve; a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving axially within said sleeve in an insertion and extraction direction by an insertion and extraction of a matching key; and a plurality of key matching members movably supported by the key plug, each of which is arranged to be insertable in one of the plurality of locking holes, and withdrawn from its respective locking holes by an insertion of the matching key into the key plug; wherein some of the key matching members among the plurality of key matching members have a hook at an outer end that protrudes toward a said key insertion direction, and each of the locking holes of said sleeve that receives a key matching member with said hook has an engaging portion on a side adjacent to said hook in said key insertion direction that lockingly engages with the hook when said key plug moves axially in said key insertion direction in the state that the plurality of key matching members are inserted into the plurality of locking holes.