Loudspeaker

Patent metadata

Field	Value
Publication number	US-12581245-B2
Application number	US-202318223871-A
Country	US
Kind code	B2
Filing date	Jul 19, 2023
Priority date	Apr 14, 2023
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

Provided is a loudspeaker. The loudspeaker includes a shell, a vibration structure, a magnetic circuit structure and a voice coil. The shell includes a main shell, an inner support body and an elastic member. The inner support body is connected to the main shell body through the elastic member, multiple inner support bodies are provided, and the multiple inner support bodies are disposed in a surrounding manner to define an inner support cavity that penetrates in a first direction. The vibration structure is connected to the main shell. The magnetic circuit structure is located in the inner support cavity and is sandwiched between the multiple the inner support bodies. The voice coil includes a main voice coil and an auxiliary voice coil.

First claim

What is claimed is:

1 . A loudspeaker, comprising:
a shell, wherein the shell comprises a main shell body, an inner support body and an elastic member, the inner support body is connected to the main shell body through the elastic member, a plurality of inner support bodies are provided, and the plurality of inner support bodies are disposed in a surrounding manner to define an inner support cavity that penetrates in a first direction; a vibration structure, wherein the vibration structure is connected to the main shell body; a magnetic circuit structure, wherein the magnetic circuit structure is located in the inner support cavity and is sandwiched between the plurality of inner support bodies; and a voice coil, wherein the voice coil comprises a main voice coil and an auxiliary voice coil, the main voice coil is connected to the vibration structure and is movable in the first direction relative to the magnetic circuit structure, the auxiliary voice coil is disposed around an outer periphery of the main voice coil and connected to the main shell body, when the main voice coil and the auxiliary voice coil are energized for operation, a direction of an acting force applied to the magnetic circuit structure by the main voice coil is opposite to a direction of an acting force applied to the magnetic circuit structure by the auxiliary voice coil; wherein the magnetic circuit structure comprises: a yoke, wherein the yoke is sandwiched between the plurality of inner support bodies, the yoke comprises a bottom plate portion and a plurality of support plate portions connected to the bottom plate portion, and the plurality of support plate portions comprises first support plate portions and second support plate portions; and wherein support plate portions at two ends of the bottom plate portion in a second direction are the first support plate portions, and the first support plate portions are located inside the auxiliary voice coil; and support plate portions at two ends of the bottom plate portion in a third direction are the second support plate portions, and the second support plates are located outside the auxiliary voice coil.

2 . The loudspeaker of claim 1 , wherein the elastic member is sandwiched between the main shell body and the inner support body in a direction perpendicular to the first direction.

3 . The loudspeaker of claim 1 , wherein the elastic member is laid within the main shell body, one of the inner support body and the elastic member is provided with a first convex head, the other of the inner support body and the elastic member is provided with a first groove, and the first convex head extends into the first groove.

4 . The loudspeaker of claim 1 , wherein the magnetic circuit structure further comprises:
a main magnetic pole structure, wherein the main magnetic pole structure is disposed on the yoke, and the main voice coil is disposed around an outer periphery of the main magnetic pole structure; and at least one auxiliary magnetic pole structure, wherein the at least one auxiliary magnetic pole structure is disposed on the yoke and located outside the main voice coil, and the auxiliary voice coil is disposed around an outer periphery of the auxiliary magnetic pole structure.

5 . The loudspeaker of claim 4 , wherein the main magnetic pole structure and the auxiliary magnetic pole structure are each disposed on the bottom plate portion and located between the plurality of support plate portions, and the plurality of support plate portions abut against the plurality of inner support bodies.

6 . The loudspeaker of claim 5 , wherein the second direction is perpendicular to the first direction.

7 . The loudspeaker of claim 6 , wherein two auxiliary magnetic pole structures among the at least one auxiliary magnetic pole structure are provided, the main magnetic pole structure is sandwiched between the two auxiliary magnetic pole structures in the third direction and the third direction is perpendicular to the first direction and the second direction.

8 . The loudspeaker of claim 4 , wherein the main magnetic pole structure comprises:
a main magnet, wherein the main magnet is ring-shaped and disposed on a side of the yoke facing the vibration structure; and a main magnetic pole piece, wherein the main magnetic pole piece is ring-shaped and disposed on a side of the main magnet facing the vibration structure.

9 . The loudspeaker of claim 4 , wherein the auxiliary magnetic pole structure comprises:
an auxiliary magnet, wherein the auxiliary magnet is elongated and disposed on a side of the yoke facing the vibration structure; and an auxiliary magnetic pole piece, wherein the auxiliary magnetic pole piece is elongated and disposed on a side of the auxiliary magnet facing the vibration structure.

10 . The loudspeaker of claim 9 , wherein the auxiliary magnetic pole piece comprises a first piece body and a second piece body connected to each other, a thickness of the first piece body in the first direction is greater than a thickness of the second piece body in the first direction, and the first piece body faces away from the main magnetic pole structure relative to the second piece body.

Assignees

• Merry Electronics Suzhou Co

Inventors

• Zhang Yuanyuan
• Luo Mingya
• Xu Meng
• Li Xue
• Wei Xiaoxiang

Classifications

• H04R2209/041

  Voice coil arrangements comprising more than one voice coil unit on the same bobbin · CPC title

• H04R2209/027

  Electrical or mechanical reduction of yoke vibration · CPC title

• H04R9/046

  Construction · CPC title

• H04R9/025

  Magnetic circuit · CPC title

• H04R1/2811

  for loudspeaker transducers · CPC title