Integrated sounding component

Patent metadata

Field	Value
Publication number	US-12568330-B2
Application number	US-202418629974-A
Country	US
Kind code	B2
Filing date	Apr 9, 2024
Priority date	Dec 18, 2023
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

The present application provides an integrated sounding component including an upper cover, a lower cover, and a sounding unit arranged in an accommodating space enclosed by the upper cover and the lower cover, the sounding unit dividing the accommodating space into a front cavity and a rear cavity. The sounding unit includes a basket frame, a vibration system, and a magnetic circuit system. The magnetic circuit system is configured as a hollow structure, and an isolating member is provided between the magnetic circuit system and the lower cover, which isolates the hollow structure from the front cavity. The hollow structure and the isolating member together form a middle cavity in communication with the rear cavity. The integrated sounding component of the present application increases the volume of the rear cavity by providing a hollow structure in the magnetic circuit system, thereby improving the product's low frequency performance.

First claim

What is claimed is:

1 . An integrated sounding component, comprising:
an upper cover; a lower cover arranged opposite to the upper cover; and a sounding unit arranged in an accommodating space enclosed by the upper cover and the lower cover, the sounding unit comprising a basket frame, a vibration system fixed to the basket frame, and a magnetic circuit system; wherein a mounting rim is protruded and formed on a top surface of the lower cover, and the sounding unit is mounted within the mounting rim; the magnetic circuit system is configured as a hollow structure along a direction from the front cavity to the rear cavity; an isolating member with a closed ring shape is provided between the magnetic circuit system and the lower cover; one end of the isolating member is sealingly connected to the magnetic circuit system and surrounds the hollow structure, and the other end of the isolating member is sealingly connected to an inner wall surface of the lower cover; an inner wall surface of the upper cover, an outer wall surface of the mounting rim, the inner wall surface of the lower cover, and the sounding unit together enclose a rear cavity; at least a portion of the rear cavity surrounds a peripheral edge of the sounding unit and is lower in height than the sounding unit; the sounding unit, the inner wall surface of the mounting rim, the inner wall surface of the lower cover, and an outer wall surface of the isolating member together enclose a front cavity; the isolating member is configured to isolate the hollow structure from the front cavity; the hollow structure, an inner wall surface of the isolating member, and the inner wall surface of the lower cover together enclose a middle cavity, and the middle cavity is in communication with the rear cavity.

2 . The integrated sounding component of claim 1 , wherein the magnetic circuit system comprises a lower clamping plate spaced from the upper cover, a main magnetic assembly arranged on the lower clamping plate, and a sub-magnetic assembly arranged around the main magnetic assembly; the isolating member is sandwiched between the main magnetic assembly and the lower cover.

3 . The integrated sounding component of claim 2 , wherein the main magnetic assembly comprises a first main magnetic steel arranged on the lower clamping plate, a main pole core arranged on the first main magnetic steel, and a second main magnetic steel arranged on the main pole core; the sub-magnetic assembly comprises a plurality of sub-magnetic steels arranged on the lower clamping plate and surrounding the main magnetic assembly, and a plurality of sub-pole cores arranged on the sub-magnetic steels; the isolating member is sandwiched between the second main magnetic steel and the lower cover, and the hollow structure is formed throughout the lower clamping plate, the first main magnetic steel, the main pole core, and the second main magnetic steel.

4 . The integrated sounding component of claim 3 , wherein the vibration system comprises a diaphragm fixed to the basket frame, an elastic support member arranged opposite to the diaphragm, a skeleton connecting the diaphragm and the elastic support member, and a voice coil configured to drive the diaphragm to vibrate; the voice coil is fixed to the skeleton and inserted in a magnetic gap formed by the main magnetic assembly and the sub-magnetic assembly.

5 . The integrated sounding component of claim 4 , wherein the skeleton comprises a main body portion, a first portion extending from an outer peripheral edge of the main body portion toward the lower clamping plate, and a second portion extending from an inner peripheral edge of the main body portion toward the lower clamping plate; the elastic support member is connected to the first portion, and the voice coil is connected to the second portion.

6 . The integrated sounding component of claim 5 , wherein the diaphragm comprises a first folded ring portion fixed to the basket frame, a second folded ring portion surrounded by the first folded ring portion, and a dome connecting the first folded ring portion and the second folded ring portion; an inner peripheral edge of the first folded ring portion is fixed to the main body portion; an inner peripheral edge of the second folded ring portion being fixed to the main body portion; the main body portion acts as the dome, and the inner peripheral edge of the second folded ring portion is fixed to the second main magnetic steel and abutted against an outer surface of the isolating member.

7 . The integrated sounding component of claim 5 , wherein the elastic support member extends from an inner surface of the first portion toward the main body portion to form an electrical connection portion; the electrical connection portion is fixed to the main body portion, and a lead wire of the voice coil is connected to the electrical connection portion.

8 . The integrated sounding component of claim 6 , wherein the skeleton and the diaphragm are integrally injection molded.

9 . The integrated sounding component of claim 1 , further comprising a breathable isolating member provided in the rear cavity and spaced apart from the sounding unit, wherein the breathable isolating member divides the rear cavity into a first rear cavity and a second rear cavity, the first rear cavity being filled with sound-absorbing particles, and the second rear cavity being in communication with the middle cavity.

10 . The integrated sounding component of claim 1 , wherein one end of the isolating member is abutted against the magnetic circuit system, and the other end of the isolating member is abutted against the inner wall surface of the lower cover.

11 . The integrated sounding component of claim 1 , wherein the isolating member is integrally connected to the inner wall surface of the lower cover, and an end of the isolating member away from the lower cover is abutted against the magnetic circuit system.

Assignees

• Aac Microtech Changzhou Co Ltd

Inventors

• Liu Hailin
• Li Hong
• Wang Wu

Classifications

• H04R9/06

  Loudspeakers · CPC title

• H04R9/025

  Magnetic circuit · CPC title

• H04R2499/11

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

• H04R1/2811 Primary

  for loudspeaker transducers · CPC title