Object Data Models

A reclining mechanism for a vehicle seat, which is composed of a first arm member for attachment to a frame structure of a seat cushion or a back rest of the vehicle seat; a second arm member for attachment to a frame structure of the other of the back rest or the seat cushion, the second arm member being connected with the first arm member by means of a hinge pin for relative rotation about the hinge pin and having a circular ratchet portion concentric with the binge pin; a pair of diametrically opposed slide pawls slidably coupled with the fist arm member in a radial direction with respect to the hinge pin to be moved toward and away from the ratchet portion of the second arm member; a cam plate mounted on the hinge pin for rotation therewith and being engaged with the slide pawls for engaging the slide pawls with the ratchet portion of the second arm member when the hinge pin is retained in position under load of a torsion spring assembled thereon and for disengaging the slide pawls from the ratchet portion of the second arm member when the hinge pin is rotated against the load of the torsion spring; a support plate threadedly engaged with the hinge pin to be moved by rotation of the hinge pin in an axial direction for receiving the slide pawls thereon when the slide pawls are maintained in engagement with the ratchet portion of the second arm member and for releasing the slide pawls therefrom when the slide pawls are disengaged from the ratchet portion of the second arm member.