Speakers

Patent metadata

Field	Value
Publication number	US-12520074-B2
Application number	US-202318486182-A
Country	US
Kind code	B2
Filing date	Oct 13, 2023
Priority date	Oct 28, 2022
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A speaker includes a diaphragm, a magnetic circuit component, a coil, and a bracket arranged around the magnetic circuit component. At least part of the coil is arranged in a magnetic gap formed by the magnetic circuit component. The coil drives the diaphragm to vibrate to generate sound after the coil is energized. The diaphragm includes a main-body region and a folded-ring region surround the main-body region. A first part of the bracket is connected to the folded ring region. A thickness of the first part of the bracket is within a range of 0.3 mm-3 mm. The thickness of the first part is a minimum distance between a connection region and an attaching region. The connection region is a region where the bracket and the folded-ring region connect. The attaching region is a region where the bracket directly attaches to the magnetic circuit component in a vibration direction of the diaphragm.

First claim

What is claimed is:

1 . A speaker, comprising:
a diaphragm; a magnetic circuit component; a coil connected to the diaphragm, at least part of the coil being arranged in a magnetic gap formed by the magnetic circuit component, and the coil driving the diaphragm to vibrate to generate sound after the coil being energized, wherein
the diaphragm includes a main-body region and a folded-ring region surrounding the main-body region; and
a bracket arranged around the magnetic circuit component, wherein
a first part of the bracket is connected to the folded ring region, a thickness of the first part of the bracket is within a range of 0.5 mm-2 mm, and the thickness of the first part is a minimum distance between a connection region and an attaching region, the connection region being a region where the bracket and the folded-ring region connect, and the attaching region being a region where the bracket directly attaches to the magnetic circuit component in a vibration direction of the diaphragm.

2 . The speaker of claim 1 , further comprising a housing, wherein a pressure relief hole is provided on the housing, and a rear cavity with a resonant frequency being not less than 3.3 kHz is formed between the pressure relief hole and a back surface of the diaphragm.

3 . The speaker of claim 2 , wherein a volume of the rear cavity is within a range of 60 mm 3 -110 mm 3 .

4 . The speaker of claim 1 , wherein
the main-body region includes a first inclined section and a first connecting section connected to the coil, the first inclined section is attached to a part of the folded-ring region, and the first inclined section is tilted in a direction away from the coil relative to the first connecting section.

5 . The speaker of claim 4 , wherein the folded-ring region includes an arc-shaped section, and a ratio of a height of the arc-shaped section to a span of the arc-shaped section is within a range of 0.35-0.4.

6 . The speaker of claim 4 , wherein an inclination angle of the first inclined section relative to the first connecting section is within a range of 5°-30°, and the first connecting section is perpendicular to a vibration direction of a diaphragm.

7 . The speaker of claim 4 , wherein
the main-body region includes a dome arranged at an end of the first connecting section far from the first inclined section, a span of the dome is within a range of 2 mm-8 mm, and a height of the dome is within a range of 0.7 mm-1.2 mm.

8 . The speaker of claim 7 , wherein a ratio of the height of the dome to the span of the dome is within a range of 0.1-0.3.

9 . The speaker of claim 7 , wherein a frequency of a high-frequency split vibration is not less than 20 kHz.

10 . The speaker of claim 7 , wherein
the dome is formed by carbon fibers arranged in an interlacing arrangement, at least a part of the carbon fibers are interlaced at a first angle, and the first angle is within a range of 45°-90°.

11 . The speaker of claim 7 , wherein a thickness of the dome is less than 80 μm in the vibration direction of the diaphragm.

12 . The speaker of claim 11 , wherein the magnetic circuit component includes a magnetic conductive plate and a magnet, wherein
the magnetic conductive plate is arranged between the magnet and the diaphragm the magnetic conductive plate is attached to a surface of the magnet, and a distance between a lowest point of the dome and an upper surface of the magnetic conductive plate is greater than 0.8 mm in the vibration direction of the diaphragm.

13 . The speaker of claim 4 , wherein a minimum distance between the coil and the first inclined section is not less than 0.3 mm.

14 . The speaker of claim 1 , further comprising a housing, wherein a ratio of an area of a projection of the diaphragm in the vibration direction of the diaphragm to an area of a projection of the housing in the vibration direction of the diaphragm is not less than 0.5.

15 . The speaker of claim 14 , wherein the ratio of the area of the projection of the diaphragm in the vibration direction of the diaphragm to the area of the projection of the housing in the vibration direction of the diaphragm is within a range of 0.8-0.95.

16 . The speaker of claim 14 , wherein a size of a long axis of the diaphragm is within a range of 13 mm-25 mm, and a size of a short axis of the diaphragm is within a range of 4 mm-13 mm.

17 . The speaker of claim 1 , wherein
the magnetic circuit component includes an accommodation member, a plurality of air holes are provided on a bottom wall of the accommodation member of the magnetic circuit component or a side wall of the magnetic circuit component that is attached to the bracket.

18 . The speaker of claim 1 , wherein the magnetic circuit component includes a magnetic conductive plate and a magnet, wherein
the magnetic conductive plate is arranged between the magnet and the diaphragm, the magnetic conductive plate is attached to a surface of the magnet, and a distance between a center of the coil and a center of the magnetic conductive plate is less than 0.3 mm in the vibration direction of the diaphragm.

19 . The speaker of claim 1 , wherein the magnetic circuit component includes an accommodation member, and a distance between a bottom wall of the coil and a bottom of the accommodation member is within a range of 0.2 mm-4 mm in the vibration direction of the diaphragm.

20 . The speaker of claim 19 , wherein a distance between the coil and a side wall of the accommodation member is within a range of 0.1 mm-0.5 mm.

Assignees

• Shenzhen Shokz Co Ltd
• King Tone Innovation Beijing Tech Co Ltd

Inventors

• Zhang Lei
• Gu Shanyong
• Zhao Hongqiang
• Tong Peigeng
• Xie Guolin
• Li Yongjian
• Xu Jiang
• Zhao Tao
• Wu Duoduo
• Ji Ao
• Qi Xin

Classifications

• H04R2460/09

  Non-occlusive ear tips, i.e. leaving the ear canal open, for both custom and non-custom tips (H04R2460/11 takes precedence) · CPC title

• H04R1/105 Primary

  Earpiece supports, e.g. ear hooks (for stereophonic headphones H04R5/0335) · CPC title

• H04R1/021

  incorporating only one transducer · CPC title

• H04R2307/023

  Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials · CPC title

• H04R1/025

  Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture · CPC title