A breathing device for a bionic robot, comprising a motor (1), a cylinder fixing member (2), a rotor (3), a rotor fixing bracket (4), blades (5), a damping block (6), an air chamber (7), a left air chamber (71), a right air chamber (72), an air outlet (73), an air inlet (74), a filter (8), a film bracket (9), an inward absorption film (91), an outward absorption film (92), a sealing ring (10), a film bracket fixing plate (11), a cylinder (12), a piston rod (13), a piston (14), and an eccentric disk (15); the rotor (3) passes through the motor (1), and both ends of the rotor (3) are clamped by the rotor fixing bracket (4); the blades (5) are fixed at one end of the rotor (3), and the eccentric disk (15) is fixed at the other end of the rotor (3); the cylinder fixing member (2) is fixed on one side of the motor (1), and the cylinder (12) passes through the cylinder fixing member (2); the piston (14) is inserted in the cylinder (12), the piston rod (13) is fixed on the piston (14), and the end of the piston rod (13) is fixed at the eccentric point of the eccentric disk (15). The invention enables the air outlet (73), when the piston (14) reciprocates, to simulate normal human breathing, ensuring that a robot can function as normal during transport.
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