Knee joint rehabilitation training device

The utility model discloses a knee joint rehabilitation training device, and relates to the field of medical equipment. The device comprises a chair, wherein the chair comprises a seat, armrests and a pedal mechanism; the pedal mechanism comprises a box body, a first movable rod, a second movable rod, a first connecting plate and a second connecting plate; placement plates are arranged on the sidewalls of the first and second movable rods respectively; a motor is arranged on the sidewall of the box body; a first fixed rod and a second fixed rod are arranged at the bottom of the box body; a main shaft of the motor is arranged on the first and second fixed rods; a first cam and a second cam are arranged on the main shaft of the motor; the cam parts of the first and second cams are opposite; compression springs are arranged between the first and second connecting plates and the inner wall of the box body respectively; the first and second connecting plates contact with the first and second cams respectively. By such a design, the device is simple and reasonable in structure and high in knee function recovery speed, and has good effects, and can be conveniently and independently operated by a patient.