CYLINDER LOCK, ELECTRONIC APPARATUS, AND REGISTER

PROBLEM TO BE SOLVED: To provide a cylinder lock which provides click feeling in spite of being small and light.SOLUTION: A cylinder lock includes: a shell member 101 which has a column-shaped space therein; a rotating member 102 which is rotatably arranged in the internal space of the shell member 101 and formed with a key hole 121, into which a key 200 is inserted, along a rotary shaft; a rotation restricting member 103 which projects from the rotating member 102 and is inserted into an insertion part 106 provided in the shell member 101 to restrict the rotation of the rotating member 102; energizing means 104 which energizes the rotation restricting member 103 in a direction projecting from the rotating member 102; and an inclined part 105 which is formed at the end of the rotation restricting member 103 and has inclined surfaces 151 intersecting a rotational direction of the rotating member 102. By insertion of the key 200 into the key hole 121, the inclined part 105 is moved in a direction from the shell member 101 to the rotating member 102 to be arranged at a position intersecting the inner periphery of the shell member 101.