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Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2016/056507
Kind Code:
A1
Abstract:
In a linear vibration motor in which vibration in the thickness direction is restricted, the present invention causes vibration with large thrust while ensuring adequate weight of the balance weight. A linear vibration motor (1) is provided with: a coil (4) supported on a bottom plate (3) that faces an upper surface section (2A) of a case (2) and wound along a plane that intersects with the bottom plate (3); a magnetic pole section (10) by which thrust in the up-down direction is obtained from current flowing in the coil (4); a balance weight (6) that vibrates as a unit with the magnetic pole section (10); and an elastic member (7) for supporting the balance weight (6) on the upper surface section (2A) of the case (2) so that the balance weight can vibrate freely up and down.

Inventors:
ENDO Masaya (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
NAKAZATO Risa (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
Application Number:
JP2015/078197
Publication Date:
April 14, 2016
Filing Date:
October 05, 2015
Export Citation:
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Assignee:
NIDEC COPAL CORPORATION (18-10, Shimura 2-chome Itabashi-k, Tokyo 50, 〒1748550, JP)
International Classes:
B06B1/04; H02K33/16
Foreign References:
JPH09317651A1997-12-09
JP2002192073A2002-07-10
US20120032535A12012-02-09
JP2002200460A2002-07-16
Attorney, Agent or Firm:
EICHI PATENT & TRADEMARK CORP. (45-13, Sengoku 4-chome Bunkyo-k, Tokyo 11, 〒1120011, JP)
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