Invention Application

  • Patent Title: SOUND-PRODUCING DEVICE
  • Application No.: US17773441
    Application Date: 2020-11-05
  • Publication No.: US20220386034A1
    Publication Date: 2022-12-01
  • Inventor: Jianbin YangShousong QiangChunfa Liu
  • Applicant: GOERTEK INC.
  • Applicant Address: CN Weifang, Shandong
  • Assignee: GOERTEK INC.
  • Current Assignee: GOERTEK INC.
  • Current Assignee Address: CN Weifang, Shandong
  • Priority: CN201911089625.9 20191108
  • International Application: PCT/CN2020/126801 WO 20201105
  • Main IPC: H04R9/06
  • IPC: H04R9/06 H04R9/04
SOUND-PRODUCING DEVICE
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.
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