The present invention relates to a force transfer mechanism which has a simpler structure and smaller volume than conventional force transfer mechanisms adopting cams, cranks, or gears, and which converts a linear reciprocating motion performed by force into a linear reciprocating motion in a direction perpendicular to the movement direction of the force. The force transfer mechanism of the present invention comprises: a cylindrical guide housing; a movable body which is slidably arranged in the guide housing so as to move in a linear direction by means of an externally applied force, and which comprises a cutout groove having one or more inclined surfaces, and through-holes formed in a direction perpendicular to the linear motion direction in portions corresponding to the inclined surfaces; and a slave unit, one end of which is coupled to the movable body such that said end passes through the through-holes of the movable body and moves along the inclined surfaces of the cutout groove vertically relative to the movement direction of the movable body, and the other end of which is elastically supported such that the slave unit moves orthogonally to the movement direction of the movable body in conjunction with the linear movement of the movable body.
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