Multi-functional sound producing apparatus

Patent metadata

Field	Value
Publication number	US-11758333-B1
Application number	US-202217826192-A
Country	US
Kind code	B1
Filing date	May 27, 2022
Priority date	Mar 2, 2022
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

The present disclosure provides multi-functional sound producing apparatus, including housing defining receiving cavity and sound producing device. The sound producing device includes vibration system and magnetic circuit unit driving vibration system to vibrate along first direction. The magnetic circuit unit includes main magnet assembly and auxiliary magnet. The apparatus further includes motor device which includes elastic member fixedly connected to housing, weight connected to elastic member, magnet component fixed to weight and vibrating along second direction with weight, and driving member fixed to bottom wall to drive magnet component to vibrate. Two groups of magnet component and driving member are provided, each of two opposite sides of main magnet assembly is provided with one group of magnet component and driving member, and second direction is perpendicular to first direction. The present disclosure has advantages of simple assembly, more saved overall space, low costs.

First claim

What is claimed is:

1. A multi-functional sound producing apparatus, comprising a housing defining a receiving cavity and a sound producing device arranged in the receiving cavity,
wherein the housing comprises a bottom wall and a side wall bending and extending from the bottom wall, and the sound producing device comprises a vibration system and a magnetic circuit unit that drives the vibration system to vibrate along a first direction to produce sound,
wherein the magnetic circuit unit comprises a main magnet assembly fixed to the bottom wall and an auxiliary magnet spaced from the main magnet assembly to form a magnetic gap, and
wherein the multi-functional sound producing apparatus further comprises a motor device arranged in the receiving cavity, the motor device comprises an elastic member fixedly connected to the housing, a weight connected to the elastic member to be suspended in the receiving cavity, a magnet assembly fixed to the weight and vibrating along a second direction together with the weight, and a driving member fixed to the bottom wall to drive the magnet assembly to vibrate, and
wherein two groups of the magnet assembly and the driving member are provided, each of two opposite sides of the main magnet assembly is provided with one group of the two groups of the magnet assembly and the driving member, and the second direction is perpendicular to the first direction.

2. The multi-functional sound producing apparatus as described in claim 1 , wherein
the driving member is a coil, the magnet assembly comprises a first magnet, a second magnet, and a third magnet arranged side by side, and
the first magnet and the third magnet are magnetized along the first direction and have opposite polarity, and the second magnet is magnetized along the second direction.

3. The multi-functional sound producing apparatus as described in claim 1 , wherein
the driving member comprises an iron core and a solenoid wound on the iron core, the magnet assembly comprises a magnet, the magnet is magnetized along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction.

4. The multi-functional sound producing apparatus as described in claim 3 , wherein
the magnet is a three-stage magnetized magnet, and a polarity at a middle of the magnet is opposite to a polarity at each of two ends of the magnet.

5. The multi-functional sound producing apparatus as described in claim 1 , wherein
the weight is of a hollow ring-shaped structure, and the weight is provided with a recess for receiving the magnet assembly.

6. The multi-functional sound producing apparatus as described in claim 1 , wherein
the multi-functional sound producing apparatus has a rectangle structure, and
the magnet assembly and the driving member are arranged in a major-axis direction of the multi-functional sound producing apparatus.

7. The multi-functional sound producing apparatus as described in claim 1 , wherein
the vibration system comprises a diaphragm, a voice coil for driving the diaphragm to vibrate to produce sound, and a voice coil bracket for connecting the voice coil and the diaphragm, wherein
the voice coil bracket comprises a first fixed portion connected to the voice coil, a second fixed portion connected to the diaphragm, and a connecting portion that connects the first fixed portion and the second fixed portion and has a step structure, and
a plurality of connecting portions are provided and spaced from one another.

8. The multi-functional sound producing apparatus as described in claim 7 , further comprising a fixed ring, and the fixed ring has one end fixedly connected to the magnetic circuit unit and another end fixedly connected to the diaphragm.

9. The multi-functional sound producing apparatus as described in claim 8 , wherein
the diaphragm comprises a dome and a suspension fixed to a side of the dome close to the motor device,
a side of the suspension close to the magnetic circuit unit is connected to the fixed ring, and
a side of the suspension away from the magnetic circuit unit is connected to the side wall of the housing.

10. The multi-functional sound producing apparatus as described in claim 9 , wherein
the side wall of the housing comprises a first side wall and a second side wall arranged to stack on each other,
the multi-functional sound producing apparatus further comprises an air-permeable isolation member sandwiched between the first side wall and the second side wall, and
the air-permeable isolation member extends into the receiving cavity.

Assignees

• Aac Microtech Changzhou Co Ltd

Inventors

• Huang Xingzhi
• Wang Yao
• Mao Lubin
• Lu Dong

Classifications

• H04R11/02 Primary

  Loudspeakers · CPC title

• H04R7/04 Primary

  Plane diaphragms · CPC title

• H04R1/021

  incorporating only one transducer · CPC title

• H04R2400/11

  Aspects regarding the frame of loudspeaker transducers · CPC title

• H04R2400/07

  Suspension between moving magnetic core and housing · CPC title