Title:
VOICE COIL MOTOR, CAMERA MODULE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/092762
Kind Code:
A1
Abstract:
A voice coil motor (100), a camera module and an electronic device. The voice coil motor (100) comprises a fixing frame (20), a lens carrier (30), a coil (40) and a magnet (50). An accommodating cavity (60) is provided in the fixing frame (20), the lens carrier (30) is movably provided within the accommodating cavity (60) in the direction of an optical axis, the magnet (50) is fixed on an outer peripheral wall of the lens carrier (30), the coil (40) is sleeved on the fixing frame (20) in the circumferential direction and is located on the periphery of the magnet (50), and a gap is formed between the coil (40) and the magnet (50). The surface of the magnet (50) facing the coil (40) is an inclined surface (501), so that a force (F) acting on the magnet (50) by the energized coil (40) and generated by the magnet (50) can be decomposed into a first direction force (F1), which is used for suspending the lens carrier (30) in the accommodating cavity (60), and a second direction force (F2), which is used for enabling the lens carrier (30) to move in the direction of the optical axis I within the accommodating cavity (60), so as to realize focusing. The voice coil motor (100) solves the problem in the prior art that the requirement of an elastic piece structure for supporting causes a complicated structure, not being conducive to the miniaturization of the voice coil motor (100).
Inventors:
ZOU ZHIHUI (CN)
GU QINGFENG (CN)
LIN YANG (CN)
GU QINGFENG (CN)
LIN YANG (CN)
Application Number:
PCT/CN2019/117568
Publication Date:
May 20, 2021
Filing Date:
November 12, 2019
Export Citation:
Assignee:
NANCHANG O FILM OPTICAL ELECTRONIC TECH CO LTD (CN)
International Classes:
G02B7/04; G03B13/34; H02K33/18
Foreign References:
| CN109752815A | 2019-05-14 | |||
| CN105281531A | 2016-01-27 | |||
| CN109716634A | 2019-05-03 | |||
| CN205720829U | 2016-11-23 | |||
| US20140355142A1 | 2014-12-04 | |||
| CN204967591U | 2016-01-13 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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