公开(公告)号：US20190006926A1

公开(公告)日：2019-01-03

申请号：US15746737

申请日：2016-12-19

Applicant: Goertek Inc.

Inventor： Yueguang Zhu ,  Weiye Zang ,  Bin Wang ,  Chunfa Liu

IPC: H02K33/02 ,  H02K33/18 ,  H02K5/24

Abstract: A linear vibration motor is disclosed. The motor comprises: a stator component comprising a shell, a pole core and a coil component, wherein the shell has a cavity body therein, the pole core is disposed on a bottom and comprises a magnetic pole at the middle of the pole core along a vibration direction and protruding out of the outer surface of the pole core, the coil component is divided into a first coil and a second coil by the magnetic pole, and current directions of the first and second coils are opposite; a vibrator component comprising a permanent magnet surrounding the coil component and a counter weight part on the permanent magnet, the permanent magnet being axially magnetized; and an elastic element, by which the vibrator component is suspended in the cavity body, and which is configured for returning the vibrator component to an initial position.

公开(公告)号：US11349380B2

公开(公告)日：2022-05-31

申请号：US16638353

申请日：2017-11-21

Applicant: GOERTEK INC.

Inventor： Weiye Zang ,  Dongsheng Mao

IPC: H02K33/18 ,  B06B1/04

Abstract: A linear vibration motor, comprising a stator assembly and a vibrator assembly. The stator assembly comprises a housing (1) having a receiving cavity, a magnet (2) located in the receiving 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 resilient support member (5) is configured to suspend the vibrator assembly in the receiving 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 force of the magnet by the coil, the central magnetic yoke functions as a guide shaft, thereby ensuring the vibration coaxiality of the vibrator assembly.