Patent ID: 6991294

Claim:
A high-rigidity recliner for a vehicle, comprising: an upper actuating member fixedly attached to a lower fixing member connected to a seat fixing base, the upper actuating member having a pair of first symmetrical supporting members and a pair of second symmetrical supporting members for supporting a cam and first and second lock gears, the upper actuating member having a seat axis shaft hole and an actuating pin guiding hole formed therethrough; a lower actuating member fixedly attached to an upper fixing member provided to fix a back of a seat, the lower actuating member having an inner receiving section and an outer receiving section, the lower actuating member being in surface contact with the upper actuating member; an actuating cam interposed between the upper actuating member and the lower actuating member, the actuating cam being fitted on the circumference of a shaft; and the first and second lock gears fixedly interposed between the lower actuating member and the actuating cam, the first and second lock gears having outer gear parts disposed in the inner receiving section of the lower actuating member, first supporting member contact surfaces, second supporting member contact surfaces, first cam contact surfaces, and second cam contact surfaces, respectively, wherein the first and second lock gears lock or release the lower actuating member by rotation of the actuating cam.