VARIABLE ELASTIC BODY USING PERMANENT MAGNET

摘要

PURPOSE: A variable elastic body using a permanent magnet is provided to change the repulsive force between two permanent magnets by controlling the amount of shielding according to the size of external force. CONSTITUTION: A variable elastic body (100) using a permanent magnet comprises a lower cylinder (110), a first permanent magnet (120), an upper cylinder (130), a second permanent magnet (140), a shielding unit (150), and a control unit. The lower cylinder is empty. The first permanent magnet is arranged inside the lower cylinder and is connected between two points inside the lower cylinder. The upper cylinder is empty and is inserted into the lower cylinder to be vertically movable. The second permanent magnet is arranged inside the upper cylinder and is connected between two points inside the upper cylinder. The shielding unit is arranged under the second permanent magnet inside the upper cylinder to be rotated in the cross section direction of the upper cylinder. The control unit controls the rotation angle of the shielding unit according to the size of external force applied to the upper cylinder or the lower cylinder.