Title:
SOUND PRODUCING UNIT, SOUND PRODUCING MODULE, AND ELECTRONIC TERMINAL
Document Type and Number:
WIPO Patent Application WO/2019/205660
Kind Code:
A1
Abstract:
The present invention discloses a sound producing unit, a sound producing module, and an electronic terminal. The sound producing unit comprises a magnetic circuit system, a vibration system, and a circuit board. A voice coil of the vibration system is formed of two voice coil wires wound together, and two end portions of each voice coil wire respectively serve as a lead-in end and a lead-out end. The locations where two leads respectively extend from the two lead-in ends are at two sides of the voice coil and are diagonally arranged, and the locations where the two leads respectively extend from the two lead-out ends are also at two sides of the voice coil and are diagonally arranged. The two lead-in ends and the two lead-out ends are electrically connected to corresponding pads of the circuit board, respectively. An internal circuit of the circuit board is configured to electrically connect the two lead-in ends and electrically connect the two lead-out ends. In the sound producing unit of the present invention, connecting the two leads in parallel enables a smaller wire diameter than a single wire for the same resistance, such that the voice coil has a reduced thickness, the magnetic gap becomes narrower, and a higher BL value can be attained, thereby improving sensitivity of the vibration system and sound-producing performance of the sound producing unit.
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Inventors:
CHENG HANLONG (CN)
ZHANG CHENGFEI (CN)
LIU CHUNFA (CN)
ZHANG CHENGFEI (CN)
LIU CHUNFA (CN)
Application Number:
PCT/CN2018/120392
Publication Date:
October 31, 2019
Filing Date:
December 11, 2018
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/04
Foreign References:
| CN206596220U | 2017-10-27 | |||
| CN202435594U | 2012-09-12 | |||
| CN202799128U | 2013-03-13 | |||
| US20140119592A1 | 2014-05-01 |
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
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