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Patent Searching and Data


Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2017/057314
Kind Code:
A1
Abstract:
The present invention makes it possible to make a linear vibration motor thin. Even in the case of a flat movable element, the generation of operational noise (abnormal noise) due to the rotation of the movable element about an axis of vibration is suppressed, and steady vibration without looseness can be obtained. This linear vibration motor 1 is provided with a movable element 10, which is provided with a magnet portion 4 and a weight portion 7, a frame 2, which houses the movable element 10, a coil 3, which is fixed to the frame 2 and drives the magnet portion 4 along one axial direction, an elastic member 6, which is disposed in the frame 2 and applies to the movable element 10 an elastic force that opposes a driving force that is applied to the magnet portion 4, and a guide shaft 8, which is pivotally supported by the frame 2 and guides reciprocating vibration along the one axial direction of the movable element 10, wherein the elastic member 6 rotationally biases the movable element 10 in one direction around the guide shaft 8, and the frame 2 is provided with a sliding support portion (sliding plate 13) that slidably supports a portion of the movable element 10 that is rotationally biased.

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Inventors:
KATADA YOSHINORI (JP)
ODAJIMA SHIN (JP)
ISHII SHIORI (JP)
SEGAWA NOBORU (JP)
Application Number:
JP2016/078361
Publication Date:
April 06, 2017
Filing Date:
September 27, 2016
Export Citation:
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Assignee:
NIDEC COPAL CORP (JP)
International Classes:
H02K33/02; B06B1/04
Foreign References:
US20110012441A12011-01-20
JP2002199689A2002-07-12
JP2015095943A2015-05-18
JP2004073983A2004-03-11
JP2014028349A2014-02-13
Attorney, Agent or Firm:
EICHI Patent & Trademark Corp. (JP)
Patent business corporation Wisdom international patent firm (JP)
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