Linear vibration motor

Patent metadata

Field	Value
Publication number	US-10076771-B2
Application number	US-201715415937-A
Country	US
Kind code	B2
Filing date	Jan 26, 2017
Priority date	Oct 25, 2016
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

A linear vibration motor includes a housing; an elastic connecting part connected with the housing; a vibrator supported by the elastic connecting part and suspended in the housing; a first permanent magnet positioned by an internal wall of the housing; and a second permanent magnet assembled with the vibrator and facing the first permanent magnet. The first permanent magnet and the second permanent magnet are separated from each other. The first permanent magnet and the second permanent magnet are such configured that the same polarities of the first and second permanent face to each other for producing a repulsive force between the vibrator and the housing.

First claim

What is claimed is:

1. A linear vibration motor including:
a housing;
an elastic connecting part connected with the housing;
a vibrator supported by the elastic connecting part and suspended in the housing;
a first permanent magnet positioned by an internal wall of the housing;
a second permanent magnet assembled with the vibrator and facing the first permanent magnet; wherein
the first permanent magnet and the second permanent magnet are separated from each other, the first permanent magnet and the second permanent magnet are such configured that the same polarities of the first and second permanent magnets face to each other for producing a repulsive force between the vibrator and the housing.

2. The linear vibration motor as described in claim 1 , wherein the elastic connecting part includes a first connecting portion, a second connecting portion, and a third connecting portion connecting the first connecting portion to the second connecting portion, the elastic connecting part connects respectively the housing and the vibrator through the first connecting portion and the second connecting portion, and the third connecting portion is separated respectively with the housing and the vibrator.

3. The linear vibration motor as described in claim 1 , wherein the vibrator includes a first magnet, a second magnet and a coil drive module, a magnetic pole of the first magnet face a magnetic pole of the second magnet with same polarity, the coil is wound on two adjacent ends of the first magnet and the second magnet.

4. The linear vibration motor as described in claim 3 , wherein the vibrator further includes a first weight fixed on the first magnet at the end away from the second magnet and a second weight fixed on the second magnet at the end away from the first magnet.

5. The linear vibration motor as described in claim 4 , wherein the first weight is provided with a first mounting groove, an end of the first magnet away from the second magnet is inserted into the first mounting groove, and/or,
the second weight is provided with a second mounting groove, an end of the second magnet away from the first magnet is inserted into the second mounting groove.

6. The linear vibration motor as described in claim 3 , wherein the coil includes a first coil wound on the first magnet at the end adjacent to the second magnet and a second coil wound on the second magnet at the end adjacent to the first magnet.

Assignees

• Xu Hongfu
• Chai Zhilin
• Wu Na
• Ling Fanghua
• Aac Technologies Pte Ltd

Inventors

• Xu Hongfu
• Chai Zhilin
• Wu Na
• Ling Fanghua

Classifications

• H02K33/12

  with armatures moving in alternate directions by alternate energisation of two coil systems · CPC title

• H02K33/00

  Motors with reciprocating, oscillating or vibrating magnet, armature or coil system (arrangements for handling mechanical energy structurally associated with motors H02K7/00, e.g. H02K7/06) · CPC title

• B06B1/045 Primary

  using vibrating magnet, armature or coil system · CPC title

• H02K1/34

  Reciprocating, oscillating or vibrating parts of the magnetic circuit · CPC title