VIBRATION SYSTEM SUPPORT MECHANISM OF SPEAKER

PROBLEM TO BE SOLVED: To provide a vibration system support mechanism which can reduce hysteresis and improve durability without including elements of rotary motion, swaying, and distortion in an axial direction vibration of a vibration system of a speaker made up of a voice coil bobbin and a diaphragm.SOLUTION: A damper to constitute a support mechanism is formed by a first damper part including an inner periphery frame which has one edge bonded to a voice coil bobbin and an outer periphery frame surrounding it, and a second damper part including the inner periphery frame which has the other edge fixed on a frame and the outer periphery frame surrounding it. The inner and outer periphery frames of each of the damper parts are elastically connected in an axial direction with different heights through multiple spiral arms formed by belt-like ramps having a width expanding in a radial direction of the frames, and both of the damper parts are arranged and jointed together so that each arm is positioned in symmetry in relation to a joint surface on which each outer periphery frame is overlapped.