Acoustic output apparatus with a plurality of acoustic drivers and methods thereof

Patent metadata

Field	Value
Publication number	US-11178477-B2
Application number	US-202117170947-A
Country	US
Kind code	B2
Filing date	Feb 9, 2021
Priority date	Apr 30, 2019
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

The present disclosure provides an acoustic output apparatus. The acoustic output apparatus may include an acoustic output component and a supporting structure forming an acoustically open structure that allows the acoustic output component to acoustically communicate with the surroundings. The acoustic output component may include a plurality of acoustic drivers, each of which may be configured to output a sound with a frequency range. At least one of the acoustic drivers may include a magnetic system for generating a first magnetic field. The magnetic system may include a first magnetic component for generating a second magnetic field and at least one second magnetic component. A magnetic gap may be formed between the first magnetic component and the at least one second magnetic component. A magnetic field intensity of the first magnetic field in the magnetic gap may be greater than that of the second magnetic field in the magnetic gap.

First claim

What is claimed is:

1. An acoustic output apparatus, comprising:
an acoustic output component; and
a supporting structure for supporting the acoustic output component proximate to a user's ear, the supporting structure forming an acoustically open structure that allows the acoustic output component to acoustically communicate with surroundings, wherein the supporting structure comprises:
a plurality of first sound guiding holes including a pair of first sound guiding holes that are spaced apart from each other by a first distance; and
a plurality of second sound guiding hole including a pair of second sound guiding holes that are spaced apart from each other by a second distance, wherein the first distance is greater than the second distance; and

the acoustic output component comprises:
a plurality of acoustic drivers each of which is configured to output a sound with a frequency range, frequency ranges of sounds outputted by different acoustic dividers are different, wherein at least one of the plurality of acoustic drivers includes:
a magnetic system for generating a first magnetic field, the magnetic system comprising:
a first magnetic component for generating a second magnetic field; and
at least one second magnetic component surrounding the first magnetic component, wherein a magnetic gap is formed between the first magnetic component and the at least one second magnetic component, and a magnetic field intensity of the first magnetic field in the magnetic gap is greater than a magnetic field intensity of the second magnetic field in the magnetic gap.

2. The acoustic output apparatus of claim 1 , wherein the supporting structure comprises an ear hook for hanging the acoustic output component on the user's ear or a headband placed over a head of the user when the acoustic output apparatus is worn by the user.

3. The acoustic output apparatus of claim 1 , wherein
the supporting structure comprises a fixing component configured to fix the acoustic output component near an opening of an ear canal of the user, and
the fixing component is placed into the ear canal without blocking the ear canal.

4. The acoustic output apparatus of claim 1 , wherein the plurality of acoustic drivers include:
a first acoustic driver configured to output a first sound with a first frequency range; and
a second acoustic driver configured to output a second sound with a second frequency range, the second frequency range including frequencies higher than the first frequency range.

5. The acoustic output apparatus of claim 4 , wherein:
the first sound is outputted from the plurality of first sound guiding holes, and
the second sound is outputted from the plurality of second sound guiding holes.

6. The acoustic output apparatus of claim 4 , further comprising:
a first acoustic route between the first acoustic driver and the plurality of first sound guiding holes, and
a second acoustic route between the second acoustic driver and the plurality of second sound guiding holes, wherein the first acoustic route and the second acoustic route have different frequency selection characteristics.

7. The acoustic output apparatus of claim 1 , wherein
the supporting structure comprises a first housing for accommodating the first acoustic driver and a second housing for accommodating the second acoustic driver,
the first housing includes a first chamber and a second chamber located on either side of the first acoustic driver, the first chamber being acoustically coupled to one of the pair of first sound guiding holes, the second chamber being acoustically coupled to other one of the pair of first sound guiding holes, and
the second housing includes a third chamber and a fourth chamber located on either side of the second acoustic driver, the third chamber being acoustically coupled to one of the pair of second sound guiding holes, the fourth chamber being acoustically coupled to other one of the pair of second sound guiding holes.

8. The acoustic output apparatus of claim 4 , wherein
the first sound includes a first portion outputted from one of the pair of first sound guiding holes and a second portion outputted from other one of the pair of first sound guiding holes, and
the first portion has an inversed phase with respect to the second portion.

9. The acoustic output apparatus of claim 1 , wherein the magnetic system further comprises:
a first magnetic conductive component mechanically connected to a first surface of the first magnetic component.

10. The acoustic output apparatus of claim 9 , further comprising:
a second magnetic conductive component mechanically connected to a second surface of the first magnetic component, the second surface being opposite to the first surface of the first magnetic component; and
at least one third magnetic component, wherein the at least one third magnetic component is mechanically connected to each of the second magnetic conductive component and the at least one second magnetic component.

11. The acoustic output apparatus of claim 10 , further comprising at least one fourth magnetic component placed within the magnetic gap and mechanically connected to each of the first magnetic component and the second magnetic conductive component.

12. The acoustic output apparatus of claim 10 , further comprising at east one electric conductive component mechanically connected to at least one of the first magnetic component, the first magnetic conductive component, or the second magnetic conductive component.

13. The acoustic output apparatus of claim 9 , further comprising at least one of fifth magnetic component mechanically connected to the first magnetic conductive component, wherein the at least one fifth magnetic component and the first magnetic component are located at opposite sides of the first magnetic conductive component.

14. The acoustic output apparatus of claim 13 , further comprising a third magnetic conductive component for suppressing a magnetic field leakage of the first magnetic field, wherein
the third magnetic conductive component is mechanically connected to the fifth magnetic component, and
the third magnetic conductive component and the first magnetic conductive component are located at opposite sides of the fifth magnetic component.

15. The acoustic output apparatus of claim 1 , further comprising a magnetic connector configured to charge the acoustic output apparatus when the magnetic connector absorbs a charging interface of an external power source.

16. The acoustic output apparatus of claim 15 , wherein the magnetic connector comprises:
a magnetic adsorption ring;
an insulation base including a plurality of accommodation holes, at least part of the insulation base being inserted into the magnetic adsorption ring; and
a plurality of terminals each of which is accommodated in one of the plurality of accommodation holes.

17. The acoustic output apparatus of claim 16 , wherein
the insulation base comprises a supporting member and an insertion member,
a cross section of the supporting member is greater than that of the insertion member, and
the magnetic adsorption ring is inserted into an accommodation space formed by the supporting member and the insertion member.

18. The acoustic output apparatus of claim 17 , further comprising a housing for accommodating the magnetic adsorption ring and the insulation base, wherein the housing comprises:
a body that is sleeved on the insulation base and the magnetic adsorption ring, an outer circumference wall of the supporting member and an inner circumf

Assignees

• Shenzhen Voxtech Co Ltd

Inventors

• Zhang Lei
• Fu Junjiang
• Yan Bingyan
• Liao Fengyun
• Qi Xin

Classifications

• H04M1/035

  Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities · CPC title

• G02C11/00

  Non-optical adjuncts; Attachment thereof (G02C7/16 takes precedence) · CPC title

• H04R3/04

  for correcting frequency response · CPC title

• H04R1/345

  for loudspeakers · CPC title

• H04R1/2873

  for loudspeaker transducers · CPC title