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Patent Searching and Data


Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2016/167299
Kind Code:
A1
Abstract:
The present invention inhibits the generation of noise resulting from a movable element rotating around an axis of vibration even when said movable element is configured to have a flat shape. A linear vibration motor 1 is provided with: a movable element 10 provided with a magnetic pole 2 and a weight section 3; a frame 4 that supports the movable element 10 so as to be capable of reciprocating vibration; a coil 5 that is fixed with respect to the frame 4 and that applies driving force to the magnetic pole 2; a guide shaft 6 that limits vibration of the movable element 10 to one axial direction; and an elastic member 8 that elastically deforms as a result of reciprocating vibration of the movable element 10. The movable element 10 has a flat shape and is provided with a contact section 20 at which the movable element 10 and the frame 4 are in partial contact, said contact section 20 being provided to a position that is separated from the guide shaft 6 in the width direction of the movable element 10. The movable element 10 is biased toward the frame 4 side at the contact section 20 by the magnetic force of the magnetic pole 2.

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Inventors:
ODAJIMA Shin (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
KATADA Yoshinori (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
SEGAWA Noboru (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
ISHII Shiori (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
Application Number:
JP2016/061947
Publication Date:
October 20, 2016
Filing Date:
April 13, 2016
Export Citation:
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Assignee:
NIDEC COPAL CORPORATION (18-10, Shimura 2-chome Itabashi-k, Tokyo 50, 〒1748550, JP)
International Classes:
H02K33/12; B06B1/04
Foreign References:
JP2011030370A2011-02-10
JPH10117472A1998-05-06
JP2011097747A2011-05-12
JP2011078150A2011-04-14
US20130099600A12013-04-25
Attorney, Agent or Firm:
EICHI PATENT & TRADEMARK CORP. (45-13, Sengoku 4-chome Bunkyo-k, Tokyo 11, 〒1120011, JP)
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