LOCK DEVICE

摘要

It is one object of the present invention to avoid a space in a thickness direction of a locking mechanism from being occupied by a deformation promoting portion of a thrust member and to simplify shapes of a base plate or other such members that are positioned adjacent to the thrust member. The present invention has the following structure. That is, a locking device includes a locking mechanism and a striker. A hook (30) of the locking mechanism (20), when rotated, is capable of forming a locked condition in which the striker (70) is held between the hook and a recess (23) of a base plate (22). A pawl (46) is capable of rotating to a position in which the pawl can engage the hook and maintaining the hook in the locked condition. A locking spring (56) is capable of biasing the hook and the pawl such that the hook and the pawl are stabilized in the locked condition or the unlocked condition. A thrust member is capable of rotating to a thrusting position in which the thrust member can press the hook in the locked condition toward a locking direction via a cam surface (61) formed therein. A thrust spring is capable of biasing the thrust member toward the thrusting position. A through hole (65) that is formed in the thrust member forms a deformation promoting portion (64). The deformation promoting portion is capable of deforming the thrust member when a load having a predetermined value or more is exerted on the thrust member side from the hook side.