Rotatable and stretchable motor-driven seat leg support

The utility model provides a rotatable and stretchable motor-driven seat leg support comprising a leg support frame assembly, a leg support stretching assembly, a linear motion driving assembly and a rotary motion driving assembly. The leg support frame assembly is rotatably connected with a seat; the leg support stretching assembly is arranged in the leg support frame assembly; the linear motion driving assembly is connected with the leg support stretching assembly to drive the leg support stretching assembly to move linearly; and the rotary motion driving assembly is connected with the leg support frame assembly and the seat to drive the leg support frame assembly to rotate in relation to the seat; and an electric push rod in the leg support frame assembly can push the leg support to rotate around a hinge so as to control the angle variation. By adopting the technical scheme, the motor-driven seat leg support can realize both linear motion and rotary motion, has the advantages of excellent appearance effect, compact and simple structure, safe and reliable performance, lower cost, convenient replacement, removal and maintenance, no noise during rotation; and besides, the main structural parts can be made of aluminum alloy materials, thereby the whole weight is lighter..