• Patent Title: Linear vibration motor
  • Application No.: US15749834
    Application Date: 2015-11-13
  • Publication No.: US10574126B2
    Publication Date: 2020-02-25
  • Inventor: Fenglei ZuBin Wang
  • Applicant: GOERTEK INC.
  • Applicant Address: CN Weifang, Shandong
  • Assignee: GOERTEK INC.
  • Current Assignee: GOERTEK INC.
  • Current Assignee Address: CN Weifang, Shandong
  • Agency: Holzer Patel Drennan
  • Priority: CN201510613333 20150923
  • International Application: PCT/CN2015/094520 WO 20151113
  • International Announcement: WO2017/049747 WO 20170330
  • Main IPC: H02K33/18
  • IPC: H02K33/18 H02K33/16
Linear vibration motor
Abstract:
Disclosed is a linear vibration motor comprising a vibrator and a stator arranged parallel to the vibrator. The vibrator comprises a counterweight block and a vibration block embedded and fixed in the counterweight block. The vibration block comprises at least two permanent magnets. The stator comprises a coil. A magnetic conductive core is arranged in the coil. The adjacent end surfaces of the at least two adjacent permanent magnets form slopes parallel to each other. The slopes form an acute angle with the axis of the magnetic conductive core. The slopes extend obliquely in the direction approaching the corresponding magnetic conductive core. The motor not only ensures the maximization of the sizes of the permanent magnets, but also increases the effective magnetic field intensity between a gap between the adjacent permanent magnets and the magnetic conductive core, thus increasing a driving force driving the vibrator into vibration.
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