Patent ID: 7585019

Claim:
A seat reclining mechanism for being assembled to a stationary bracket of a wheelchair, the seat reclining mechanism primarily comprises: a seat frame positioned above the stationary bracket by a plurality of first bracket links arranged between the seat frame and stationary bracket; a back frame pivotally fastened to the rear end of the seat frame and connected to the stationary bracket with a pair of second bracket links; and an actuator drivably connected with the seat frame; whereby throughout a reclining movement of the seat reclining mechanism the plurality of first bracket links are pushed to oscillate forward gradually to keep the center of gravity of a user's body reduplicated to the center of gravity of the wheelchair; said seat reclining mechanism further comprising at least one leg support linkage which is composed of a footrest, leg rest and a linkage system; wherein the linkage system can be driven by the actuator to change the extending direction of the footrest and the leg rest; wherein the linkage system includes a third bracket link having one end pivotally connected to the stationary bracket and the other end pivotally connected to one end of an intermediate link, the other end of which is immovably affixed by the leg rest as well as the footrest, and a bent link arm fastened to the seat frame and the middle portion of the intermediate link at both ends thereof respectively.