Title:
SCREEN SOUND GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/248216
Kind Code:
A1
Abstract:
A screen sound generating device, comprising a frame (10), a screen (20) mounted on the frame (10), and a driving device (30) provided between the frame (10) and the screen (20) for driving the screen (20) to vibrate and produce a sound. The driving device (30) comprises a magnetic circuit system (31) fixed on the screen (20), an electromagnet (32) fixed on the frame (10) for driving the magnetic circuit system (31) to vibrate, and an elastic connection member (33) for connecting the magnetic circuit system (31) and the electromagnet (32). The magnetic circuit system (31) comprises magnetic steels (311) provided around the electromagnet (32) and a magnetic frame (312) for fixing the magnetic steels (311). The magnetic frame (312) comprises a top wall (3121) fixed to the screen (20), a bottom wall (3122) provided opposite to the top wall (3121), and a side wall (3123) connecting the top wall (3121) and the bottom wall (3122). The magnetic steels (311) are fixed on a side of the side wall (3123) facing the electromagnet (32). The screen sound generating device can simultaneously satisfy the requirements of low energy consumption and sufficient provision of a large driving force.
Inventors:
MAO LUBIN (CN)
CHEN ZHAOXIAN (CN)
CHEN ZHAOXIAN (CN)
Application Number:
PCT/CN2019/091237
Publication Date:
December 17, 2020
Filing Date:
June 14, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
International Classes:
H04R9/06; H04R9/02
Foreign References:
| CN109842701A | 2019-06-04 | |||
| CN201204690Y | 2009-03-04 | |||
| CN202663535U | 2013-01-09 | |||
| CN205847579U | 2016-12-28 | |||
| US20180348816A1 | 2018-12-06 |
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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