SPEED REGULATION HAND BRAKE MECHANISM AND SPEED REGULATION METHOD THEREOF

A speed regulation hand brake mechanism and a speed regulation method thereof. The speed regulation hand brake mechanism comprises a housing, wherein a mounting cavity is defined in the interior of the housing; a speed regulation button is hinged to a side wall of the mounting cavity; a driving portion is mounted inside the mounting cavity and hinged to the speed regulation button; a rack is hinged to the driving portion, and can receive a pressing force transferred by the speed regulation button and then slide in the horizontal direction of an inner wall of the mounting cavity; an encoder is fixed on a first fixing plate in the mounting cavity; the rack drives rotation of a gear arranged at the top of the encoder to change code values output by the encoder; and an elastic end of a return sheet is located on an inner side of the speed regulation button, and the other side thereof is fixed to the inner wall of the mounting cavity for resetting the speed regulation button. According to the present invention, th