Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/029051
Kind Code:
A1
Abstract:
A linear vibration motor, comprising a stator assembly and a vibrator assembly. The stator assembly comprises a housing (1) having an accommodating cavity, a magnet (2) located in the accommodating cavity and jointly fixed to the housing (1), and a central magnetic yoke (3) of which at least one end is jointly fixed to the housing (1). The magnet (2) comprises a hollow portion (21) extending along the vibration direction of the vibrator assembly. The vibrator assembly comprises a coil (4) and a mass block (9). When the vibrator assembly vibrates, the coil (4) vibrates along with the vibrator assembly and is inserted into the hollow portion (21) of the magnet (2). The central magnetic yoke (3) runs through the coil (4). An elastic support member (5) is configured to suspend the vibrator assembly in the accommodating cavity of the housing (1). According to the linear vibration motor, the magnetism of the magnet can be utilized to the greatest extent, thereby improving the efficiency of utilizing the magnetic line of the magnet by the coil, the central magnetic yoke functions as a guide shaft, thereby ensuring the vibration coaxiality of the vibrator assembly.
Inventors:
ZANG WEIYE (CN)
MAO DONGSHENG (CN)
MAO DONGSHENG (CN)
Application Number:
PCT/CN2017/112168
Publication Date:
February 14, 2019
Filing Date:
November 21, 2017
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H02K33/02
Foreign References:
| CN107276361A | 2017-10-20 | |||
| CN107257190A | 2017-10-17 | |||
| CN107317454A | 2017-11-03 | |||
| CN103219857A | 2013-07-24 | |||
| CN203368282U | 2013-12-25 |
Attorney, Agent or Firm:
BEIJING JANLEA PATENT AGENCY CO., LTD. (CN)
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