Speaker box and electronic device

Patent metadata

Field	Value
Publication number	US-12452580-B2
Application number	US-202318395780-A
Country	US
Kind code	B2
Filing date	Dec 26, 2023
Priority date	Apr 7, 2023
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A speaker box and an electronic device are disclosed. The speaker box includes an upper cover plate including side walls, a first lower cover plate, a speaker unit, a motor module, and second lower cover plates. The speaker unit divides an accommodating cavity defined by upper cover plate and first lower cover plate into front and back cavities. The second lower cover plates are assembled with the upper cover plate to define compensation cavities. A length of at least one of the side walls of the upper cover plate is greater than that of an orthographic projection thereof, so the speaker box is suitable for various electronic devices and has strong adaptability and wide application. The compensation cavities are communicated with the back cavity, which increases an overall space of the back cavity, improves low-frequency performance of the speaker unit, and improves sound production effect of the speaker unit.

First claim

What is claimed is:

1. A speaker box, comprising:
an upper cover plate;
a first lower cover plate;
a speaker unit; and
a motor module;
wherein the first lower cover plate is assembled with the upper cover plate to define an accommodating cavity, the speaker unit and the motor module are accommodated in the accommodating cavity, the speaker unit divides the accommodating cavity into a front cavity and a back cavity; the motor module is disposed on one side, distal from the upper cover plate, of the speaker unit; the upper cover plate comprises a top wall and side walls, a length of at least one of the side walls is greater than a length of an orthographic projection of the at least one of the side walls, the speaker box further comprises second lower cover plates, the second lower cover plates are respectively assembled with edge areas of the upper cover plate to define compensation cavities, and the compensation cavities are communicated with the back cavity.

2. The speaker box according to claim 1 , wherein the upper cover plate comprises first side walls and second side walls, the first side walls are opposite to each other along a length direction of the upper cover plate, the second side walls are opposite to each other along a width direction of the upper cover plate, and
a length of each of the second side walls is greater than a length of a projection of each of the second side walls.

3. The speaker box according to claim 1 , wherein supporting steps are disposed at one end, facing the second lower cover plates, of the side walls of the upper cover plate;
each of the second lower cover plates comprises a bottom wall and side walls of the second lower cover plates connected to the bottom wall, and bosses are disposed at one end, facing the upper cover plate, of the side walls of the second lower cover plates; and
each of the bosses is embedded in a corresponding supporting step of the supporting steps.

4. The speaker box according to claim 1 , wherein the second lower cover plates are fixed to the edge areas of the upper cover plate through ultrasonic welding.

5. The speaker box according to claim 1 , wherein the compensation cavities are communicated with each other.

6. The speaker box according to claim 1 , wherein the speaker box further comprises mounting holes;
the mounting holes are defined on the edge areas of the upper cover plate and are located on outer sides of the compensation cavities; and
the mounting holes are configured to fix the speaker box to an electronic device.

7. The speaker box according to claim 1 , wherein a mounting groove is defined on one side, facing the speaker unit, of the upper cover plate; the speaker unit is accommodated in the mounting groove, and the mounting groove and the upper cover plate are of an injection molding integrated structure.

8. The speaker box according to claim 1 , wherein the motor module comprises a housing, and the housing of the motor module is served as the first lower cover plate.

9. The speaker box according to claim 1 , wherein sealing strips are disposed at gaps between the first lower cover plate and the second lower cover plates and gaps between the first lower cover plate and the upper cover plate.

10. An electronic device, comprising the speaker box according to claim 1 .

Assignees

• Aac Microtech Changzhou Co Ltd

Inventors

• Ren Li
• Li Chaoyuan

Classifications

• H04R2400/11

  Aspects regarding the frame of loudspeaker transducers · CPC title

• H04R2201/029

  Manufacturing aspects of enclosures transducers · CPC title

• H04R1/2803 Primary

  for loudspeaker transducers · CPC title

• H04R1/021

  incorporating only one transducer · CPC title

• H04R2499/11

  Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's · CPC title