VEHICLE SEAT RECLINING DEVICE

摘要

A vehicle seat reclining device is provided with a first bracket having internal teeth, a plurality of pawls each having external teeth capable of engaging with and disengaging from the internal teeth, a second bracket having a guide portion that movably holds the pawls in a radial direction, and a cam mechanism, which moves each pawl in the radial direction. Among the external teeth in eachpawl, at least one external tooth including an end tooth located at one end in the circumferential direction of the pawl is displaced inward in the radial direction with respect to a reference position corresponding to the pitch circle of the internal teeth along a center line that divides the external tooth into two parts in the circumferential direction without changing the shape of an effective engagement portion for the internal tooth and the pitch circle radius of the external tooth.