Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LINEAR VIBRATION MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/099042
Kind Code:
A1
Abstract:
A linear vibration motor comprises a housing (1), a drive device and a mass block (6). The drive device and the mass block (6) are both accommodated in the housing (1). The drive device comprises a Halbach array (4) and an electromagnet. The Halbach array (4) is fixed with respect to the mass block (6). The electromagnet is fixed with respect to the housing (1). The electromagnet comprises a coil (2) and a core (3). A plane in which the coil (2) is located is parallel to a vibration direction. The Halbach array (4) comprises two side magnets (41a, 41b) arranged in the vibration direction and a middle magnet (42) sandwiched between the two side magnets (41a, 41b). The side magnet (41a) corresponds to a first side portion (21) of the coil (2). The side magnet (41b) corresponds to a second side portion (22) of the coil (2). The two side magnets (41a, 41b) have opposite magnetization directions and are both perpendicular to the plane in which the coil is located. The middle magnet (42) has a magnetization direction parallel to the vibration direction and causes the coil (2) to be positioned at one side of the Halbach array (4) having a strong magnetic field.

Inventors:
ZU FENGLEI (CN)
QIN XIAOSEN (CN)
Application Number:
PCT/CN2017/088265
Publication Date:
June 07, 2018
Filing Date:
June 14, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GOERTEK INC (CN)
International Classes:
H02K33/18
Foreign References:
CN206349906U2017-07-21
CN206349903U2017-07-21
CN206349904U2017-07-21
CN106712437A2017-05-24
CN106712436A2017-05-24
CN204425641U2015-06-24
CN205178827U2016-04-20
JP2014023238A2014-02-03
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
Download PDF: