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    • 3. 发明申请
    • SHAKER
    • WO2022268451A1
    • 2022-12-29
    • PCT/EP2022/064746
    • 2022-05-31
    • PSS BELGIUM NV
    • DIAZ, EdgardDI CARLANTONIO, GiuseppeCORYNEN, David
    • H04R9/06B06B1/04H04R5/02B06B1/045H04R2440/05H04R2499/13H04R5/023H04R9/066
    • A shaker for transmitting vibrations to an application, the shaker having: a frame, including an application attachment surface for attaching the shaker to the application; a magnet unit configured to provide a magnetic field in an air gap; a coil assembly including a voice coil mounted to a voice coil former. The voice coil former is attached to the frame at a voice coil former attachment surface on the frame, wherein the voice coil former is configured to position the voice coil in the air gap, when the shaker is at rest; wherein the magnet unit is configured to move relative to the voice coil along a movement axis of the shaker when the shaker is activated by supplying electrical current to the voice coil; wherein the magnet unit is suspended from the frame by a suspension arrangement that includes a proximal suspension which interconnects the frame and the magnet unit and a distal suspension which interconnects the frame and the magnet unit, wherein the proximal suspension is closer to the voice coil former attachment surface on the frame than the distal suspension when the shaker is at rest. One of the proximal and distal suspensions has a stiffness K1, and the other of the proximal and distal suspensions has a stiffness K2, wherein K2 > K1, and the ratio K1 / K2 is 0.4 or less.