Sound generating apparatus and electronic device

Patent metadata

Field	Value
Publication number	US-12160722-B2
Application number	US-202017999877-A
Country	US
Kind code	B2
Filing date	Nov 7, 2020
Priority date	May 25, 2020
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A sound generating apparatus and an electronic device, comprising: a voice coil assembly; a pad disposed on a surface of the voice coil assembly and also provided with a separation structure, and the separation structure separates the pad into a first conductive part and a second conductive part, the first conductive part and the second conductive part are electrically connected, and the voice coil assembly is electrically connected with the first conductive part; and a conductive elastic member connected with the second conductive part, and the conductive elastic member is used for centering support the voice coil assembly. The technical solution of the present disclosure is intended to ensure that the welding end of the conductive structure and the welding end of the voice coil are consistent in height on the welding surface, so as to ensure the sound generating effect of the sound generating apparatus.

First claim

What is claimed is:

1. A sound generating apparatus, comprising:
a voice coil assembly;
a pad disposed on a surface of the voice coil assembly and provided with a separation structure, wherein the separation structure separates the pad into a first conductive part and a second conductive part, the first conductive part and the second conductive part are electrically connected, and the voice coil assembly is electrically connected with the first conductive part; and
a conductive elastic member connected with the second conductive part, and the conductive elastic member is used for centering support the voice coil assembly.

2. The sound generating apparatus of claim 1 , wherein a material of the separation structure comprises an insulating material.

3. The sound generating apparatus of claim 2 , wherein a material of the separation structure comprises paper, rubber or silicone.

4. The sound generating apparatus of claim 1 , wherein the separation structure is a groove, and the first conductive part and the second conductive part are disposed on two opposite sides of the groove.

5. The sound generating apparatus of claim 1 , wherein the separation structure is integrally formed with the pad, and the separation structure protrudes from a surface of the pad.

6. The sound generating apparatus of claim 1 , wherein the first conductive part is fixed to the voice coil assembly by laser welding, and the second conductive part is fixed to the conductive elastic member by laser welding, or
wherein the first conductive part is fixed to the voice coil assembly by soldering, and the second conductive part is fixed to the conductive elastic member by soldering, or
wherein the first conductive part is fixed to the voice coil assembly by bonding, and the second conductive part is conductively fixed to the conductive elastic member by bonding.

7. The sound generating apparatus of claim 1 , wherein the sound generating apparatus further comprises an isolator, which is disposed on the surface of the voice coil assembly and is disposed adjacent to the first conductive part or the second conductive part.

8. The sound generating apparatus of claim 7 , wherein the isolator comprises at least two isolators, at least one of the isolators is disposed adjacent to the first conductive part, and at least another one of the isolators is disposed adjacent to the second conductive part.

9. The sound generating apparatus of claim 7 , wherein an edge of the isolator is configured to overlap and connect with the first conductive part or the second conductive part.

10. The sound generating apparatus of claim 9 , wherein the isolator comprises at least two isolators, the edge of at least one of the isolators is configured to overlap and connect with the first conductive part, and the edge of at least another one of the isolators is configured to overlap and connect with the second conductive part.

11. The sound generating apparatus of claim 1 , wherein the voice coil assembly comprises a bobbin and a voice coil body, the voice coil body is wound on an outer surface of the bobbin, the pad is disposed on the outer surface of the voice coil body, the voice coil body is configured to receive an electrical signal, the voice coil body is provided with a wire lead, and the wire lead overlaps and connects with the first conductive part.

12. The sound generating apparatus of claim 11 , wherein the pad comprises at least two pads, the at least two pads are disposed on a surface of the voice coil body with intervals, each of the pads is provided with the separation structure, and each of the separation structures separates each of the pads into the first conductive part and the second conductive part,
wherein the conductive elastic member comprises at least two conductive elastic members, and each of the conductive elastic members is electrically connected with the second conductive part of each pad, or
wherein the at least two pads are disposed on a surface of the bobbin, or
wherein one of the pads is disposed on a surface of the voice coil body, and another one of the pads is disposed on a surface of the bobbin.

13. The sound generating apparatus of claim 1 , wherein the sound generating apparatus comprises a housing having an accommodating cavity therein, wherein the voice coil assembly is movably mounted in the accommodating cavity, and the conductive elastic member comprises:
a first connection part electrically connected with the second conductive part;
a second connection part connected with the housing; and
an elastic part electrically connects the first connection part and the second connection part,
wherein the elastic part has a spiral shape, and a gap is formed between the elastic part and the voice coil assembly,
wherein the sound generating apparatus further comprises a buffer member, and the buffer member is disposed in the gap and contacts with the elastic part and the voice coil assembly.

14. The sound generating apparatus of claim 13 , wherein a material of the buffer member comprises flexible material.

15. The sound generating apparatus of claim 1 , wherein the conductive elastic member is arranged in a bended strip structure.

16. The sound generating apparatus of claim 15 , wherein the conductive elastic member is arranged in linear shape, strip shape or flat plate shape.

17. An electronic device, comprising a sound generating apparatus of claim 1 .

Assignees

• Goertek Inc

Inventors

• Liu Chunfa
• Yang Jianbin
• Wang Jianxin
• Qiang Shousong

Classifications

• H04R9/06

  Loudspeakers · CPC title

• H04R9/025 Primary

  Magnetic circuit · CPC title

• H04R1/06

  Arranging circuit leads; Relieving strain on circuit leads · CPC title

• H04R9/045 Primary

  Mounting (H04R9/043 takes precedence) · CPC title

• H04R9/041

  Centering · CPC title