LINEAR VIBRATION MOTOR

WIPO Patent Application WO/2017/057314

A1

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.

JP2002057026	LINEAR ACTUATOR USING BASIC FACTOR
JPH08308201	VIBRATION ACTUATOR

KATADA YOSHINORI (JP)
ODAJIMA SHIN (JP)
ISHII SHIORI (JP)
SEGAWA NOBORU (JP)

PCT/JP2016/078361

April 06, 2017

September 27, 2016

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NIDEC COPAL CORP (JP)

H02K33/02; B06B1/04

US20110012441A1	2011-01-20
JP2002199689A	2002-07-12
JP2015095943A	2015-05-18
JP2004073983A	2004-03-11
JP2014028349A	2014-02-13

EICHI PATENT & TRADEMARK CORP. (JP)

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