Speaker

Patent metadata

Field	Value
Publication number	US-9820052-B2
Application number	US-201615061189-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Jul 31, 2015
Publication date	Nov 14, 2017
Grant date	Nov 14, 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 magnetic system includes a first magnet module and a second magnet module opposite to each other for forming a magnetic gap. The vibrating system includes a membrane module and a coil assembly for driving the membrane module to vibrate. The coil assembly includes a coil arranged in the magnetic gap and a coil support for supporting the coil; at least one of the first magnet module and the second magnet module includes a soft magnet unit, the soft magnet unit is arranged adjacent to the magnetic gap and faces the coil.

First claim

What is claimed is:

1. A speaker, comprising:
a shell including a main frame with a front opening and a rear opening, a front cover, a rear cover, the front cover and the rear cover engaged with the main frame for covering the front opening and the rear opening;
a magnetic system received in the main frame, and comprising a first magnet module and a second magnet module opposite to and apart from first magnet module for forming a magnetic gap; and
a vibrating system received in the shell, and comprising a membrane module and a coil assembly for driving the membrane module to vibrate, the membrane module vibrating in a direction along an elongated axis of the main frame;
wherein the coil assembly comprises an oblate coil arranged in the magnetic gap and a coil support for supporting the coil;
the coil is located in a plane perpendicular to a plane where the membrane module is located;
the first magnet module comprises a pair of first soft magnet units;
each of the first magnet module and the second magnet module further comprise two main magnets parallel to each other and a secondary magnet located between the two main magnets;
the two main magnets of the first magnet module are respectively parallel to the main magnets of the second magnet module;
the pair of first soft magnet units are arranged corresponding to the two main magnets of the first magnet module and adjacent to the magnetic gap and face the coil;
the first magnet module and the second magnet module are separated from and opposite to each other in a direction perpendicular to the plane where the coil is located.

2. The speaker of claim 1 , wherein the second magnet module comprises a pair of second soft magnet units are attached to the two main magnets of the second magnet module and adjacent to the magnetic gap; the two first soft magnet units and the two second soft magnet units are respectively arranged at two opposite sides of the magnetic gap and aligned with each other; the coil is located between the pair of first soft magnet units and the two second soft magnet units.

3. The speaker of claim 1 , wherein the coil support comprises a main body for supporting the coil and a pair of extending parts bending from two opposite ends of the main body in a direction perpendicular to a plane where the main body located.

4. The speaker of claim 3 , wherein the membrane module comprises a front membrane, and the vibrating system further comprises a supporting assembly, the front membrane and the supporting assembly are respectively located at two opposite sides of the coil assembly, and the pair of extending parts of the coil support is connected to the front membrane and the supporting assembly respectively.

5. The speaker of claim 4 , wherein the front 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 front membrane.

6. The speaker of claim 5 , wherein the supporting assembly 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 supporting assembly.

7. The speaker of claim 6 , wherein the vibrating system further comprises a first dome attached on the first flat part of the front membrane, and a second dome attached on the second flat part of the supporting assembly.

8. The speaker of claim 7 , wherein the supporting assembly 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 supporting assembly.

9. The speaker of claim 4 , wherein the front membrane and the supporting assembly are respectively arranged at the front opening and the rear opening of the main frame.

10. The speaker of claim 9 , wherein the shell further comprises a top cover plate and a bottom cover plate for covering the top opening and the bottom opening respectively.

11. The speaker of claim 10 , wherein the top cover plate and the bottom cover plate are detachable from the main frame.

Assignees

• Mao Lubin
• Zhou Cheng
• Wang Hongxing
• Aac Technologies Pte Ltd

Inventors

• Mao Lubin
• Zhou Cheng
• Wang Hongxing

Classifications

• H04R2499/11

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

• H04R9/025 Primary

  Magnetic circuit · CPC title

• H04R9/047

  in which the windings of the moving coil lay in the same plane · CPC title

• H04R9/045

  Mounting (H04R9/043 takes precedence) · CPC title