Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
Japanese Patent JP2017064581
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To obtain effective vibrations by improving the mass of the whole of a movable element, while suppressing the deterioration of driving force, in a linear vibration motor.SOLUTION: A linear vibration motor 1 is equipped with a movable element 2 equipped with a magnet portion 2A and a weight portion 2B; a frame body 3 which supports the movable element 2 so as to reciprocatingly vibrate; a coil 4 which is fixed on the frame body 3, and applies driving force vibrating the movable element 2 on the magnet portion 2A; and an elastic member 5 which applies elastic force repulsing to driving force on the movable element 2. In the magnet portion 2A, a plurality of magnet pieces 11, 12, and 13 magnetized in a vibrating direction of the movable element 2, are aligned in the vibrating direction of the movable element 2 so as to make magnetic poles close to each other become the same polarity. The weight portion 2B is equipped with end portion weight bodies 20 disposed at both end portions in the vibrating direction of the movable element 2, and intermediate weight bodies 21 disposed between the plurality of disposed magnet pieces 11, 12, and 13.SELECTED DRAWING: Figure 1
Inventors:
KATADA YOSHINORI
ODAJIMA SHIN
ISHII SHIORI
UBUKAWA NOBORU
ODAJIMA SHIN
ISHII SHIORI
UBUKAWA NOBORU
Application Number:
JP2015189842A
Publication Date:
April 06, 2017
Filing Date:
September 28, 2015
Export Citation:
Assignee:
NIDEC COPAL CORP
International Classes:
B06B1/04; H02K33/02
Attorney, Agent or Firm:
Eichi International Patent Office
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