Title:
SOUND PRODUCTION APPARATUS AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/022489
Kind Code:
A1
Abstract:
A sound production apparatus (100) and a terminal device. The sound production apparatus (100) comprises a basket (1), a magnetic circuit system (2), and a vibration system (3). The magnetic circuit system (2) comprises a U-shaped iron (21), an inner magnetic circuit portion (22), and an outer magnetic circuit portion (23). The inner magnetic circuit portion (22) is arranged in an accommodating recess (211) of the U-shaped iron (21), and the outer magnetic circuit portion (23) is arranged on a supporting surface (212) of the U-shaped iron (21) and is connected to the basket (1). The outer magnetic circuit portion (23) is matched with the U-shaped iron (21) to cover an opening at one end of an accommodating cavity (11). The side wall and the outer magnetic circuit portion (23) of the accommodating recess (211) are spaced apart from the inner magnetic circuit portion (22) to form a magnetic gap (24). The side of the inner magnetic circuit portion (22) facing the magnetic gap (24) is provided with a notch groove (2221). The vibration system (3) comprises a diaphragm (31) and a voice coil (32) connected to the vibrating diaphragm (31). The vibrating diaphragm (31) is connected to the basket (1) and covers an opening at the other end of the accommodating cavity (11). The end of the voice coil (32) away from the vibrating diaphragm (31) is suspended in the magnetic gap (24). The sound production apparatus (100) can effectively reduce the weight and ensure a good BL value and a good linear range, and can also meet the design requirements of miniaturization and light weight.
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| WO/2021/128329 | SOUND GENERATION DEVICE |
Inventors:
GAO YAN (CN)
LI SHITIAN (CN)
ZHANG KAI (CN)
ZHANG DI (CN)
LI SHITIAN (CN)
ZHANG KAI (CN)
ZHANG DI (CN)
Application Number:
PCT/CN2023/109841
Publication Date:
February 01, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
WEIFANG GOERDYNA TECH CO LTD (CN)
International Classes:
H04R9/06
Foreign References:
| CN109462806A | 2019-03-12 | |||
| CN105828246A | 2016-08-03 | |||
| CN115103279A | 2022-09-23 | |||
| CN103188591A | 2013-07-03 | |||
| CN103945311A | 2014-07-23 | |||
| CN107968979A | 2018-04-27 | |||
| US20130163806A1 | 2013-06-27 |
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