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VIBRATION MOTOR

  • US 20180236488A1
  • Filed: 02/20/2018
  • Published: 08/23/2018
  • Est. Priority Date: 02/22/2017
  • Status: Abandoned Application
First Claim
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1. A vibration motor comprising:

  • a stationary portion includinga casing, anda coil unit, the coil unit includinga coil member configured to generate a magnetic flux in a lateral direction;

    a vibrating body supported such that the vibrating body is able to vibrate in the lateral direction relative to the stationary portion, the vibrating body includinga magnet portion facing the coil unit in a longitudinal direction perpendicular to the lateral direction, the magnet portion having such a length in the lateral direction that a length of the coil member in the lateral direction is smaller than the length of the magnet portion in the lateral direction, the magnet portion includinga first magnet and a second magnet having respective magnetic flux directions opposite to each other in the lateral direction, anda third magnet interposed between the first magnet and the second magnet in the lateral direction, the third magnet having a magnetic flux direction in the longitudinal direction, anda first weight portion and a second weight portion disposed such that the magnet portion is interposed between the first weight portion and the second weight portion in the lateral direction, the first weight portion and the second weight portion being spaced apart from each other in the lateral direction with such a spacing therebetween that the length of the magnet portion in the lateral direction is smaller than the spacing between the first weight portion and the second weight portion in the lateral direction, the first weight portion being spaced apart from the first magnet with a gap therebetween, the second weight portion being spaced apart from the second magnet with a gap therebetween; and

    an elastic member positioned between the stationary portion and the vibrating body.

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