Vibration actuator
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsDae Lyun Kang, Dai Gil Lee, Sang Wook Park, Hak Sung Kim, Seuk Hwan Chung, Seong Geun Kim, Sang Won Kim, Jun Kun Choi
Life of this patent
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Abstract
A vibration actuator excites a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil. The vibration actuator has an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case. The elastic wire is connected between the case and the mass member for elastically supporting mass member.
Claims13
A vibration actuator for a mobile communications device, for exciting a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil, wherein the vibration actuator comprises:
- an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case, the elastic wire being connected between the case and the mass member for elastically supporting the mass member;
- wherein the mass member has a disposition groove formed, in a helical shape having at least one turn, at the outer surface thereof.
A vibration actuator for a mobile communications device, for exciting a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil, wherein the vibration actuator comprises:
- an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case, the elastic wire being connected between the case and the mass member for elastically supporting the mass member;
- wherein the mass member comprises:
- a hollow outer mass part having
- a disposition groove formed, in a helical shape having at least one turn, at the outer surface of said hollow outer mass part, and
- a center hole formed through the center of said hollow outer mass part, the center hole having a predetermined size;
- and
- an inner mass part inserted in the center hole.
A vibration actuator for a mobile communications device, for exciting a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil, wherein the vibration actuator comprises:
- an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case, the elastic wire being connected between the case and the mass member for elastically supporting the mass member;
- wherein the mass member is made of a resin material having a disposition groove formed by molding.
Dependencies are inferred from the claim text.