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1. An air suction stimulator, comprising a sleeve and a main part, wherein the sleeve is made from soft colloid and wraps around the main part, a suction opening is formed in an end of the main part, and a suction portion received in the suction opening is arranged on the sleeve corresponding to the suction opening; a drive component, a mainboard and a battery electrically connected to the mainboard are arranged in the main part; the drive component comprises a motor, a turnplate, a first movable arm and a second movable arm; the turnplate is oval, a first shaft rod is fixedly connected to an end surface of the turnplate, and two ends of the first shaft rod are rotatably mounted on a wall of an inner cavity of the main part; a middle portion of the first movable arm and a middle portion of the second movable arm are hinged together by means of a second shaft rod, and two ends of the second shaft rod are connected to the wall of the inner cavity of the main part; one end of the first movable arm and one end of the second movable arm respectively abut against an upper edge and a lower edge of the turnplate and are provided with a tension spring, and under an action of the tension spring, the first movable arm and the second movable arm keep abutting against the turnplate; an opposite end of the first movable arm and the other end of the second movable arm are arranged at the suction opening and attached to the suction portion; and the motor is connected to the mainboard and is connected to the turnplate by means of a gear set to drive the turnplate to rotate.
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