LOCK DEVICE AND SEAT RECLINING DEVICE

摘要

The present invention provides a lock device capable of suppressing a lack of smoothness in an unlocking operation, and of suppressing, in a case where there are a plurality of lock members that are operated by a cam member, unevenness in the timing for the plurality of lock members to become engaged in a locking operation. Guide portions 14 of a lower guide 15 have a plurality of cam guide faces 14a that are arranged away from each other in the circumferential direction. A cam 13 has a plurality of guided faces 13b that respectively abut against the plurality of cam guide faces 14a in the release phase. The guided face 13b in a direction in which the cam 13 is decentered by a biasing force of the lock spring 16 is extended to the release phase side with respect to the other guided faces 13b.