Patent ID: 7407230

Claim:
A recliner regulating device comprising: a central shaft; a cam connected with the central shaft, wherein the cam comprises first grooves and second grooves; a return spring connected with the central shaft and with the cam; a housing plate connected with the central shaft, the housing plate having first sliding grooves and second sliding grooves; a ratchet gear connected with the central shaft; wedges located on opposite sides of the central shaft, the wedges each having two self-locking surfaces and a boss, wherein the wedges are fitted in the first sliding grooves of the housing plate and the bosses are connected with the first grooves of the cam such that the first grooves drive the wedges; and sliders located on opposite sides of the central shaft, the sliders each having two self-locking surfaces and a boss, wherein the sliders are fitted in the second sliding grooves of the housing plate and the bosses are connected with the second grooves of the cam such that the second grooves drive the sliders, wherein the first grooves and the second grooves drive the wedges and the sliders in different directions relative to the central shaft; wherein a two-point locking-up is formed between the self-locking surfaces of the sliders and the self-locking surfaces of the wedges when the sliders are driven away from the central shaft and the wedges are driven toward the central shaft.