Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/029048
Kind Code:
A1
Abstract:
A linear vibration motor, comprising: a stator assembly, the stator assembly comprising a housing (1) having an accommodation cavity, and a magnet (2) that is disposed in the accommodation cavity and that is fixedly combined with the housing (1), the magnet (2) comprising a hollow portion (21); a vibration assembly, the vibration assembly comprising a coil (3) provided on a magnetically-conductive plate (6), as well as a mass block (4) surrounding the periphery of the coil (3), wherein because the hollow portion (21) extends along the vibrating direction of the vibration assembly, when the vibration assembly vibrates, the coil (3) vibrates along with the vibration assembly and moves into the hollow portion (21) of the magnet (2); an elastic support member (5) configured to keep the vibration assembly suspended in the accommodation cavity of the housing (1); the magnetically-conductive plate (6) further comprises a raised portion (61) formed by an upward turn of the body of the magnetically-conductive plate (6), the raised portion (61) extending into the coil (3). The described linear vibration motor structure maximizes the utilization of the magnetism of the magnet, increases the efficiency of the coil in respect of the magnetic lines of force of the magnet, and increases the electromagnetic driving force of the motor. The simplicity and high degree of precision with which the motor may be assembled improves the vibration performance thereof.
Inventors:
ZHANG XINZHONG (CN)
MAO DONGSHENG (CN)
MAO DONGSHENG (CN)
Application Number:
PCT/CN2017/112165
Publication Date:
February 14, 2019
Filing Date:
November 21, 2017
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H02K33/02; H02K33/18
Foreign References:
| CN107257190A | 2017-10-17 | |||
| CN207069864U | 2018-03-02 | |||
| CN103997181A | 2014-08-20 | |||
| CN105471217A | 2016-04-06 | |||
| CN102832778A | 2012-12-19 | |||
| CN102916553A | 2013-02-06 | |||
| CN101882854A | 2010-11-10 | |||
| KR20120020485A | 2012-03-08 |
Attorney, Agent or Firm:
BEIJING JANLEA PATENT AGENCY CO., LTD. (CN)
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