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Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2016/084807
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. Chamfered portions 14A (15A) are provided at width-direction or thickness-direction end parts of the magnetic pole parts 10 (yoke 14(15)).

Inventors:
KATADA Yoshinori (18-10 Shimura 2-chome, Itabashi-k, Tokyo 50, 〒1748550, JP)
Application Number:
JP2015/082945
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:
H02K33/06; B06B1/04; H02K33/16
Foreign References:
JP2014028349A2014-02-13
JP2010191332A2010-09-02
JP2004073983A2004-03-11
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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