Seat lock apparatus

A seat lock apparatus applicable to a seat, wherein the seat comprises a sitting side cushion and a backrest side cushion, either one of which is configured as a movable cushion that is movable relative to a vehicle main body, and wherein the seat is put in a sitting state in a case where the movable cushion is held to the vehicle main body and is put in a stowed state in a case where the movable cushion is moved away from the vehicle main body, the seat lock apparatus comprising:

• a case member, which is provided on either one of an end portion of the movable cushion and the vehicle main body, and which comprises a striker entrance groove, wherein a striker provided on the other one of the end portion of the movable cushion and the vehicle main body enters the striker entrance groove when the seat is put in the sitting state;
• and
• a hook lever that is provided rotatably in the case member via a hook shaft and is configured to be movable between an opening position where the hook lever opens an opening in the striker entrance groove and a restraining position where the hook lever closes the opening in the striker entrance groove,
• wherein the seat lock apparatus is configured to hold the striker, which has entered the striker entrance groove in a case of putting the seat in the sitting state, by the case member and the hook lever that is positioned in the restraining position to hold the movable cushion to the vehicle main body so as to maintain the sitting state, and
• wherein the striker entrance groove is formed such that only a portion of the case member, which is positioned closer to a central side of the movable cushion than the hook lever is to the central side of the movable cushion in an axial direction of the hook shaft, is brought into abutment with the striker in the case where the striker is held by the case member and the hook lever positioned in the restraining position.