Invention Grant
- Patent Title: Sound-producing device
-
Application No.: US17773441Application Date: 2020-11-05
-
Publication No.: US11979731B2Publication Date: 2024-05-07
- Inventor: Jianbin Yang , Shousong Qiang , Chunfa Liu
- Applicant: GOERTEK INC.
- Applicant Address: CN Shandong
- Assignee: Goertek Inc.
- Current Assignee: Goertek Inc.
- Current Assignee Address: CN Shandong
- Agency: Baker Botts, LLP
- Priority: CN 1911089625.9 2019.11.08
- International Application: PCT/CN2020/126801 2020.11.05
- International Announcement: WO2021/088929A 2021.05.14
- Date entered country: 2022-04-29
- Main IPC: H04R25/00
- IPC: H04R25/00 ; H04R9/04 ; H04R9/06

Abstract:
Disclosed is a sound-producing device, including: a voice coil configured to be able to be input an electrical signal; and a damper including a first connecting part, a planar elastic part and a second connecting part. The first connecting part is configured to be connected to the voice coil; the second connecting part is configured to be fixed to the sound-producing device; the planar elastic part is formed by the first connecting part being bent and extending toward the second connecting part; the damper has a mechanical stiffness Kms of 0.2 N/mm to 2 N/mm; the sound-producing device has a resonance frequency F0 of 50 Hz to 300 Hz; the sound-producing device has a total harmonic distortion THD of less than 10% in a frequency range of 100 Hz to 300 Hz.
Public/Granted literature
- US20220386034A1 SOUND-PRODUCING DEVICE Public/Granted day:2022-12-01
Information query