Reclining device

A reclining apparatus comprising:

• a first member having inner teeth formed in a circumferential direction on its inner cylindrical surface, and an open surface, and having a bottomed cylindrical shape;
• a plurality of pawls having outer teeth meshable with the inner teeth;
• a second member that is laminated on the open surface of the first member and is provided rotatable relative to the first member in the circumferential direction, and further has a plurality of pawl guides configured to guide the pawls between a locked position in which the outer teeth mesh with the inner teeth and an unlocked position in which the outer teeth are separated from the inner teeth;
• a cam that is rotatably provided between the first member and the second member and causes the pawls to move toward the locked position;
• and
• one or more second cams that are provided between the cam and the pawl, and are pressed by the cam to press the pawl, wherein
• the pawl is guided between two of the pawl guides,
• when the pawl is in the locked position,
• relative rotation between the first member and the second member is prohibited, and
• the second cam presses the pawl toward the locked position and causes the pawl to closely contact one pawl guide, and
• a spring is provided to press the pawl toward the one pawl guide,
• wherein a groove into which the one end of the spring is inserted is formed in the other pawl guide.