IP Library Granted Patent US 11,683,642
Granted Patent B2
US 11,683,642 · App. 17/727,789 · Granted Jun 20, 2023

Sound-output device

Inventors: Lei Zhang (Shenzhen, CN); Junjiang Fu (Shenzhen, CN); Fengyun Liao (Shenzhen, CN); Xin Qi (Shenzhen, CN)
Assignee: SHENZHEN VOXTECH CO., LTD.
H04R3/00H04R1/02H04R1/2803H04R3/12H04R9/025H04R25/50H04R2460/13
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Quick Facts
Patent No.
US 11,683,642
App. No.
17/727,789
Granted
Jun 20, 2023
Kind
B2
Abstract

The present application discloses a sound-output device, a vibration speaker configured to generate a bone-conducted sound wave; and an air-conducted speaker configured to generate an air-conducted sound wave. The vibration speaker is coupled to the air-conducted speaker through a mechanical structure; and the bone-conducted sound wave is input to the air-conducted speaker at least in part as an input signal.

Claims (46)

1. A sound-output device, comprising:

a vibration speaker configured to generate a bone-conducted sound wave; and

an air-conducted speaker configured to generate an air-conducted sound wave, wherein

the vibration speaker is coupled to the air-conducted speaker through a mechanical structure,

the bone-conducted sound wave is input to the air-conducted speaker at least in part as an input signal,

the air-conducted speaker includes a housing coupled to the vibration assembly to generate the air-conducted sound wave under an actuation of the vibration assembly,

the housing includes a tuning hole, and

the air-conducted speaker includes a sound tube in communication with the tuning hole, wherein

the vibration assembly includes:

a magnetic circuit system configured to generate a first magnetic field;

a vibration plate connected to the housing; and

a coil connected to the vibration plate and electrically connected to the signal processing module to receive the control signal and generate a second magnetic field based on the control signal, and the first magnetic field interacting with the second magnetic field to cause the vibration plate to generate the bone-conducted sound wave, and

the sound tube is configured such that a phase of the air-conducted sound wave is opposite to a phase of a sound leakage of the vibration plate.

2. The sound-output device according to claim 1 , further comprising:

a signal processing module configured to generate a control signal,

wherein the vibration speaker includes a vibration assembly electrically connected to the signal processing module to receive the control signal, and generate the bone-conducted sound wave based on the control signal.

3. The sound-output device according to claim 1 , wherein the air-conducted speaker further includes a membrane connected to the magnetic circuit system and the housing, and the first magnetic field interacts with the second magnetic field to cause the membrane to generate the air-conducted sound wave.

4. The sound-output device according to claim 3 , wherein the vibration plate and the housing define a cavity, and the magnetic circuit system and the membrane are disposed within the cavity.

5. The sound-output device according to claim 1 , wherein the air-conducted speaker includes a tuning mesh, and the tuning mesh covers the tuning hole.

6. The sound-output device according to claim 5 , wherein the vibration plate includes a sound hole through which the air-conducted sound wave is output from inside the housing to outside the housing.

7. The sound-output device according to claim 6 , wherein the air-conducted speaker includes a tuning mesh that covers the sound hole.

8. The sound-output device according to claim 5 , wherein the housing includes a sound hole through which the air-conducted sound wave is output from inside the housing to outside the housing.

9. The sound-output device according to claim 8 , wherein the air-conducted speaker includes a tuning mesh that covers the sound hole.

10. The sound-output device according to claim 8 , wherein the magnetic circuit system is connected to the housing via a first elastic member.

11. The sound-output device according to claim 8 , wherein the magnetic circuit system is connected to the vibration plate via a first elastic member; and the vibration plate is connected to the housing via a second elastic member.

12. The sound-output device according to claim 9 , wherein

the air-conducted speaker includes a passive membrane cover the tuning hole, and

the bone-conducted sound waves cause air pressure changes in the housing, thereby actuating the passive membrane to vibrate to generate a secondary air-conducted sound wave.

13. A sound-output device, comprising:

a bone-conducted signal processing module configured to generate a bone-conducted control signal;

an air-conducted signal processing module configured to generate an air-conducted control signal;

a housing;

a magnetic circuit system configured to generate a first magnetic field;

a vibration plate connected to the housing;

a first coil connected to the vibration plate and electrically connected to the bone-conducted signal processing module to receive the bone-conducted control signal and generate a second magnetic field based on the bone-conducted control signal, the first magnetic field interacting with the second magnetic field to cause the vibration plate to generate a bone-conducted sound wave;

a membrane connected to the housing; and

a second coil connected to the membrane and electrically connected to the air-conducted signal processing module to receive the air-conducted control signal and generate a third magnetic field based on the air-conducted control signal, the first magnetic field interacting with the third magnetic field to cause the membrane to generate an air-conducted sound wave, wherein

the housing includes a tuning hole, and

the air-conducted signal processing module includes a sound tube in communication with the tuning hole, wherein

the sound tube is configured such that a phase of the air-conducted sound wave is opposite to a phase of a sound leakage of the vibration plate.

14. The sound-output device according to claim 13 , wherein the vibration plate and the housing define a cavity, and the magnetic circuit system, the membrane and the second coil are located within the cavity.

15. The sound-output device according to claim 13 , wherein the housing further includes a sound hole, the sound-output device includes a first tuning mesh and a second tuning mesh, the first tuning mesh covers the sound hole, and the second tuning mesh covers the tuning hole.

16. The sound-output device according to claim 13 , further comprising:

a first elastic member to connect the magnetic circuit system to the housing.

17. The sound-output device according to claim 16 , further comprising:

a second elastic member to connect the vibration plate to the housing.

Continuity (3)
Continuation 17362959 · Jun 29, 2021
Continuation PCTCN2019125286 · Dec 13, 2019
Related Publication 20220248133A1 · Aug 4, 2022