Speaker

Patent metadata

Field	Value
Publication number	US-10820115-B2
Application number	US-201916528659-A
Country	US
Kind code	B2
Filing date	Aug 1, 2019
Priority date	Aug 5, 2018
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

Provided is a speaker including: a holder having a receiving space; a vibration unit received in the receiving space; and a magnetic circuit unit received in the receiving space and configured to drive the vibration unit to vibrate and sound, the magnetic circuit unit comprising a magnetic frame and a magnet received in the magnetic frame. The magnetic frame includes: a bottom wall connected to the magnet; a sidewall formed by extending from the bottom wall while being bent the vibration unit; and a leakage hole penetrating through the magnetic frame. The leakage hole is provided at a position where the bottom wall and the sidewall are connected and is in communication with the receiving space, and the leakage hole comprises a first portion penetrating through the bottom wall and a second portion penetrating through the sidewall, the first portion and the second portion being in communication with each other.

First claim

What is claimed is:

1. A speaker, comprising:
a holder having a receiving space;
a vibration unit received in the receiving space; and
a magnetic circuit unit received in the receiving space and configured to drive the vibration unit to vibrate and sound, the magnetic circuit unit comprising a magnetic frame and a magnet received in the magnetic frame,
wherein the magnetic frame comprises:
a bottom wall connected to the magnet;
a sidewall formed by extending from the bottom wall while being bent towards the vibration unit; and
at least one leakage hole penetrating through the magnetic frame,
wherein the at least one leakage hole is provided at a position where the bottom wall and the sidewall are connected and is in communication with the receiving space, and each of the at least one leakage hole comprises a first portion penetrating through the bottom wall and a second portion penetrating through the sidewall, the first portion and the second portion being in communication with each other; and
wherein the vibration unit comprises a diaphragm fixed to the holder and a voice coil disposed on a side of the diaphragm close to the magnetic circuit unit, a magnetic gap is formed between the sidewall and the magnet, one end of the voice coil away from the diaphragm extends into the magnetic gap, and the at least one leakage hole is in communication with the magnetic gap.

2. The speaker as described in claim 1 , wherein the voice coil is spaced apart from the bottom wall.

3. The speaker as described in claim 1 , wherein the bottom wall is rectangular, the sidewall comprises a pair of short sidewalls corresponding to a width direction of the bottom wall and arranged opposite to each other and a pair of long sidewalls corresponding to a length direction of the bottom wall and arranged opposite to each other, and the at least one leakage hole is provided at a position where the long sidewalls and the bottom wall are connected and/or a position where the short sidewalls and the bottom wall are connected.

4. The speaker as described in claim 3 , wherein the at least one leakage hole is disposed at a position where the long sidewalls and the bottom wall are connected, and the at least one leakage hole comprises a plurality of leakage holes spaced apart from each other.

5. The speaker as described in claim 3 , wherein the short sidewalls protrude outwardly from their outer sides facing away from the magnet to form a support portion that is supported on a side of the holder away from the vibration unit.

6. The speaker as described in claim 5 , wherein the holder comprises an enclosed frame opposite to the sidewall and a bottom plate fixed to an end of the enclosed frame close to the bottom wall, the bottom plate is provided with an opening corresponding to the bottom wall, the bottom wall covers the opening and is fixed to the bottom plate, and the sidewall extends through the opening while being bent towards the vibration unit.

7. The speaker as described in claim 6 , wherein the bottom plate is recessed at its side away from the vibration unit to form a recess in which the support portion is received.

8. The speaker as described in claim 1 , wherein the first portion and the second portion are both rectangular.

9. The speaker as described in claim 8 , wherein an area of the first portion is equal to an area of the second portion.

10. A speaker, comprising:
a holder having a receiving space;
a vibration unit received in the receiving space; and
a magnetic circuit unit received in the receiving space and configured to drive the vibration unit to vibrate and sound, the magnetic circuit unit comprising a magnetic frame and a magnet received in the magnetic frame,
wherein the magnetic frame comprises:
a bottom wall connected to the magnet;
a sidewall formed by extending from the bottom wall while being bent towards the vibration unit; and
at least one leakage hole penetrating through the magnetic frame,
wherein the at least one leakage hole is provided at a position where the bottom wall and the sidewall are connected and is in communication with the receiving space, and each of the at least one leakage hole comprises a first portion penetrating through the bottom wall and a second portion penetrating through the sidewall, the first portion and the second portion being in communication with each other; and
wherein the bottom wall is rectangular, the sidewall comprises a pair of short sidewalls corresponding to a width direction of the bottom wall and arranged opposite to each other and a pair of long sidewalls corresponding to a length direction of the bottom wall and arranged opposite to each other, and the at least one leakage hole is provided at a position where the long sidewalls and the bottom wall are connected and/or a position where the short sidewalls and the bottom wall are connected.

11. The speaker as described in claim 10 , wherein the vibration unit comprises a diaphragm fixed to the holder and a voice coil disposed on a side of the diaphragm close to the magnetic circuit unit, a magnetic gap is formed between the sidewall and the magnet, one end of the voice coil away from the diaphragm extends into the magnetic gap, and the at least one leakage hole is in communication with the magnetic gap.

12. The speaker as described in claim 11 , wherein the voice coil is spaced apart from the bottom wall.

13. The speaker as described in claim 10 , wherein the at least one leakage hole is disposed at a position where the long sidewalls and the bottom wall are connected, and the at least one leakage hole comprises a plurality of leakage holes spaced apart from each other.

14. The speaker as described in claim 10 , wherein the short sidewalls protrude outwardly from their outer sides facing away from the magnet to form a support portion that is supported on a side of the holder away from the vibration unit.

15. The speaker as described in claim 14 , wherein the holder comprises an enclosed frame opposite to the sidewall and a bottom plate fixed to an end of the enclosed frame close to the bottom wall, the bottom plate is provided with an opening corresponding to the bottom wall, the bottom wall covers the opening and is fixed to the bottom plate, and the sidewall extends through the opening while being bent towards the vibration unit.

16. The speaker as described in claim 15 , wherein the bottom plate is recessed at its side away from the vibration unit to form a recess in which the support portion is received.

17. The speaker as described in claim 10 , wherein the first portion and the second portion are both rectangular.

18. The speaker as described in claim 17 , wherein an area of the first portion is equal to an area of the second portion.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Zhang Guqing

Classifications

• H04R1/2826 Primary

  for loudspeaker transducers · CPC title

• H04R9/06 Primary

  Loudspeakers · CPC title

• H04R2400/11

  Aspects regarding the frame of loudspeaker transducers · CPC title

• H04R9/027

  Air gaps using a magnetic fluid · CPC title

• H04R7/18

  at the periphery · CPC title