Patent ID: 7066898

Claim:
A vibrator comprising: a pair of right and left treating elements adapted to undergo treatment motions including patting and kneading on a treatment subject portion of a user; a treating unit that supports said treating elements and is shiftable in a shifting direction along said treatment subject portion; guide rails that guide said treating unit to shift along the treatment subject portion; supporting means which supports said treating unit with respect to said guide rails; and position altering means which alters the position of said treating unit in a substantially orthogonal direction to said shifting direction with respect to said guide rails; wherein said supporting means comprises rollers that engage said guide rails and an arm that supports said rollers and is swingably supported by said treating unit, said position altering means serving to cause said arm to undergo a swinging motion and to alter the swinging angle of said arm; and wherein said position altering means serves to alter a swing angle of said arm between a protrusion position in which a swinging center of the arm is positioned closer toward the treatment subject portion away from the rollers such that the treating unit is caused to protrude outward with respect to the guide rails in an approaching direction to the treatment subject portion and a retreat position in which said rollers are positioned closer toward the treatment subject portion away from the swinging center of the arm such that the treating unit is caused to retreat backward with respect to the guide rails in a departing direction from the treatment subject portion.