Speaker

Patent metadata

Field	Value
Publication number	US-9807509-B2
Application number	US-201615061171-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Jul 31, 2015
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

A speaker is provided in the present disclosure. The speaker includes a shell, a magnetic system and a vibrating system received in the shell. The vibrating system includes a membrane module and a coil assembly connecting to the membrane module for driving the membrane module to vibrate. The magnetic system includes a first magnet module and a second magnet module. The first magnet module and the second magnet module are opposite to each other to form a magnetic gap, and the coil assembly is arranged in the magnetic gap. The coil assembly includes a coil and a coil support for supporting the coil. The first magnet module includes a pair of first grooves formed at two opposite edges thereof, the first grooves are adjacent to the membrane module and face the coil assembly.

First claim

What is claimed is:

1. A speaker, comprising:
a shell;
a magnetic system received in the shell, and comprising a first magnet module and a second magnet module opposite to each other for forming a magnetic gap; and
a vibrating system received in the shell, and comprising a membrane module and a coil assembly arranged in the magnetic gap;
wherein, the coil assembly is connected to the membrane module for driving the membrane module to vibrate, and comprises a coil and a coil support for supporting the coil, the first magnet module comprises a pair of first grooves formed at two opposite edges thereof, the first grooves are adjacent to the membrane module and face the coil assembly; and
wherein, the second magnet module comprises a pair of second grooves formed at two opposite edge thereof; the pair of second grooves faces the coil assembly and is aligned with the pair of first grooves of the first magnet module;
wherein, each of the first magnet module and the second magnet module comprises two main magnets parallel to each other and a secondary magnet arranged between the two main magnets, the first grooves and the second grooves are respectively formed at the main magnets of the first magnet module and the second magnet module.

2. The speaker of claim 1 , wherein the first grooves and the second grooves are step-shaped grooves.

3. The speaker of claim 1 , wherein the first magnet module further comprises two more first grooves formed at the two main magnets of the first magnet module and adjacent to the secondary magnet of the first magnet module; the second magnet module further comprises two more second grooves formed at the two main magnets of the second magnet module and adjacent to the secondary magnet of the second magnet module.

4. The speaker of claim 1 , wherein the coil support comprises a main body for supporting the coil and a pair of extending parts perpendicularly extending from two opposite ends of the main body.

5. The speaker of claim 4 , wherein the first grooves and the second grooves are configured for providing an extra space for motion of the extending parts of the coil support in operation, and the extending parts of the coil support are insertable into at least one of the first grooves and the second grooves.

6. The speaker of claim 4 , wherein the membrane module comprises a first membrane and a second membrane located at two opposite sides of the coil assembly, and the pair of extending parts of the coil support is connected to the first membrane and the second membrane respectively.

7. The speaker of claim 6 , wherein the first membrane comprises a first flat part and a first wrinkling part surrounding the first flat part, one of the extending parts of the coil support abuts against the first flat part of the first membrane.

8. The speaker of claim 7 , wherein the second membrane comprises a second flat part and a second wrinkling part surrounding the second flat part, the other one of the extending parts of the coil support abuts against the second flat part of the second membrane.

9. The speaker of claim 8 , wherein the vibrating system further comprises a first dome attached on the first flat part of the first membrane, and a second dome attached on the second flat part of the second membrane.

10. The speaker of claim 9 , wherein the second membrane further comprises a plurality of air holes formed at the second flat part thereof, and the second dome comprise a plurality of through holes aligned with the air holes of the second membrane.

11. The speaker of claim 6 , wherein the shell comprises a main frame with a front opening and a rear opening, the first membrane and the second membrane are respectively arranged at the front opening and the rear opening of the main frame.

12. The speaker of claim 11 , wherein the shell further comprises a front cover and a rear cover, the front cover and the rear cover are engaged with the main frame for covering the front opening and the rear opening, the front cover comprises a sound outlet facing the front opening.

13. The speaker of claim 11 , wherein the main frame further comprises a top opening and a bottom opening, and the shell further comprises a top cover plate and a bottom cover plate for covering the top opening and the bottom opening respectively.

14. The speaker of claim 11 , wherein the top cover plate and the bottom cover plate are detachable from the main frame.

Assignees

• Mao Lubin
• Wang Hongxing
• Ge Jiwei
• Aac Technologies Pte Ltd

Inventors

• Mao Lubin
• Wang Hongxing
• Ge Jiwei

Classifications

• H04R9/045

  Mounting (H04R9/043 takes precedence) · CPC title

• H04R2209/022

  Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils · CPC title

• H04R2499/11

  Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's · CPC title

• H04R7/04

  Plane diaphragms · CPC title

• H04R9/063

  using a plurality of acoustic drivers (H04R1/24 and H04R1/403 take precedence) · CPC title