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Patent Searching and Data


Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2016/084809
Kind Code:
A1
Abstract:
The purpose of the present invention is to enable a moveable element of a linear vibration motor which was made low profile to readily vibrate along a guide shaft. A linear vibration motor 1 is provided with the following: a moveable element 2 that includes magnetic pole parts 10 and anchor parts 20; coils 3 that impart a driving force to the magnetic pole parts 10 along an axial direction; a frame body 4 that includes a magnetic pole frame part 30 which retains the coils 3; elastic members 5 that are disposed in the frame body 4 and that impart to the moveable element 2 an elastic force which repulses the driving force; and a guide shaft 6 that, within the frame body 4, guides the axial-direction vibration of the moveable element 2. The moveable element 2 has a flat shape such that the width orthogonal to the axial direction is larger than the thickness orthogonal to the axial direction. Attachment prevention parts 50 that prevent attachment of the magnetic pole parts 10 are provided at a portion of the magnetic pole frame part 30 to which ends in the width direction of the magnetic pole parts 10 approach due to the rotation of the moveable element 2 around the guide shaft 6.

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Inventors:
ISHII Shiori (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
Application Number:
JP2015/082952
Publication Date:
June 02, 2016
Filing Date:
November 24, 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; H02K5/08; H02K33/12
Foreign References:
JP2014028349A2014-02-13
JP2010191332A2010-09-02
Attorney, Agent or Firm:
EICHI PATENT & TRADEMARK CORP. et al. (45-13, Sengoku 4-chome Bunkyo-k, Tokyo 11, 〒1120011, JP)
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