Magnetic assembly for speaker

Patent metadata

Field	Value
Publication number	US-9426577-B2
Application number	US-201414564285-A
Country	US
Kind code	B2
Filing date	Dec 9, 2014
Priority date	Jul 17, 2014
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A magnetic assembly for a speaker is disclosed in this disclosure. The magnetic assembly includes a yoke including a receiving space; a main magnet received in the receiving space and installed on the yoke; a pole plate received in the receiving space, and including a base plate attached on the main magnet and a sidewall extending substantially perpendicularly from a periphery of the base plate for increasing an overlapping area between the yoke and the pole plate.

First claim

What is claimed is:

1. A magnetic assembly, comprising,
a yoke comprising a receiving space;
a main magnet received in the receiving space and installed on the yoke;
a pole plate received in the receiving space, and comprising a base plate attached on the main magnet and a second sidewall extending substantially perpendicularly from the periphery of the base plate away from the main magnet for increasing an overlapping area between the yoke and the pole plate, wherein, a top surface of the second sidewall is coplanar with a top surface of the yoke.

2. The magnetic assembly according to claim 1 , further comprising a first sidewall extending perpendicularly from the periphery of the base plate toward the main magnet for surrounding a circumference of the main magnet.

3. The magnetic assembly according to claim 2 , wherein the first sidewall and the second sidewall are formed integrally as one part.

4. The magnetic assembly according to claim 3 further comprising a secondary magnet received in the receiving space and spaced from the main magnet;
wherein the second sidewall and the base plate are connected to each other to form a second receiving space for receiving the secondary magnet.

5. A magnetic assembly for a speaker, comprising,
a yoke comprising a main yoke plate and a side plate connected with the main yoke plate to form a cavity;
a first magnet fixed on the main yoke plate within the cavity and spaced from the side plate;
a pole piece received in the cavity, and comprising a base piece attached on the first magnet and a second sidewall extending perpendicularly from the periphery of the base piece away from the first magnet for increasing an overlapping area between the yoke and the pole piece, wherein, a top surface of the second sidewall is coplanar with a top surface of the yoke.

6. The magnetic assembly for a speaker according to claim 5 , further comprises a first sidewall extending perpendicularly from the periphery of the base piece toward the first magnet for surrounding an outer circumferential side of the first magnet.

7. The magnetic assembly for a speaker according to claim 6 , wherein the first sidewall and the second sidewall are formed integrally as one part.

8. The magnetic assembly for a speaker according to claim 7 further comprising a second magnet received in the cavity and spaced from the first magnet;
wherein the second sidewall is assembled with the base case to form an accommodating space for receiving the second magnet.

Assignees

• Tang Yun
• Aac Technologies Pte Ltd

Inventors

• Tang Yun

Classifications

• H02K1/34

  Reciprocating, oscillating or vibrating parts of the magnetic circuit · CPC title

• H04R9/025 Primary

  Magnetic circuit · CPC title

• H02K41/0356

  moving along a straight path · CPC title