Speaker

Patent metadata

Field	Value
Publication number	US-10820105-B2
Application number	US-201916524066-A
Country	US
Kind code	B2
Filing date	Jul 28, 2019
Priority date	Aug 4, 2018
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

The present disclosure provides a speaker having a lower magnetic conductive plate for carrying a magnet thereon and an upper magnetic conductive plate engaging with the lower magnetic conductive plate. The lower magnetic conductive plate includes a first oblique portion and a first horizontal portion for increasing an outer diameter of the lower magnetic conductive plate. The upper magnetic conductive plate includes a second oblique portion and a second horizontal portion both for increasing an outer diameter of the upper magnetic conductive plate. The lower and upper magnetic conductive plates cooperatively form a receiving space for accommodating a suspension to support a coil assembly. The lower magnetic conductive plate further includes a protruding portion extending perpendicularly from a middle portion of the bottom for carrying the magnet. The suspension is used for supporting the coil assembly for providing balanced vibration to the diaphragm.

First claim

What is claimed is:

1. A speaker, comprising:
a vibration system including diaphragm and a coil assembly for driving the diaphragm;
a magnetic circuit system including a magnetic conductive element having a receiving space and a magnet supported by the magnetic conductive element;
a magnetic gap formed by the magnet and the magnetic conductive element;
the magnetic conductive element comprising:
a lower magnetic conductive plate for supporting the magnet, including a bottom, a first oblique portion extending outwardly from the bottom;
an upper magnetic conductive plate engaging with the lower magnetic conductive plate for forming the receiving space, including a second oblique portion engaging with the first oblique portion;

a suspension sandwiched between the first oblique portion and the second oblique portion, the suspension connecting to one end of the coil assembly; wherein
the lower magnetic conductive plate further includes a protruding portion extending perpendicularly from a middle portion of the bottom for carrying the magnet.

2. The speaker as described in claim 1 , wherein a projection of the protruding portion along a vibration direction of the diaphragm locates completely within the bottom.

3. The speaker as described in claim 2 , wherein a projection of the magnet along a vibration direction of the diaphragm coincide with a projection of the protruding portion along the vibration direction of the diaphragm.

4. The speaker as described in claim 1 , wherein the first oblique portion further includes a first horizontal portion extending from the first oblique portion outwardly, and the upper magnetic conductive plate further includes a second horizontal portion extending from the second oblique portion outwardly for engaging with the first horizontal portion.

5. The speaker as described in claim 4 , wherein the first horizontal portion has a projection along the vibration direction coinciding with a projection of the second horizontal portion along the vibration direction; a projection of the first oblique portion along the vibration direction coincides with a projection of the second oblique portion along the vibration direction.

6. The speaker as described in claim 4 , wherein the suspension includes a first fastening portion, a second fastening portion and a connecting portion between the first and second fastening portions; the first fastening portion connects to one end of the coil assembly, and the second fastening portion sandwiched between the first and second horizontal portions.

7. The speaker as described in claim 4 , wherein the first horizontal portion includes a first upper surface adjacent to the second horizontal portion and a first lower surface opposite to the first upper surface; the second horizontal portion includes a second lower surface adjacent to the first upper surface and a second upper surface opposite to the second lower surface; the first horizontal portion includes a first fastening slot recessed from the first upper surface toward the first lower surface, and/or the second horizontal portion includes a second fastening slot recessed from the second lower surface toward the second upper surface; and wherein the second fastening portion of the suspension is fixed in the first fastening slot and/or in the second fastening slot.

8. The speaker as described in claim 6 , wherein the suspension includes a waved cross-section taken along the vibration direction.

9. The speaker as described in claim 6 , wherein the coil assembly includes a frame and a coil wound around the frame.

10. The speaker as described in claim 9 , wherein the frame of the coil partially surrounds the magnet.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Song Wei

Classifications

• H04R9/025 Primary

  Magnetic circuit · CPC title

• H01F7/0289

  Transducers, loudspeakers, moving coil arrangements · CPC title

• H04R9/06

  Loudspeakers · CPC title

• H01F7/081

  Magnetic constructions · CPC title

• H04R7/20 Primary

  Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands · CPC title