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US-20260129369-A1 - VIBRATION ASSEMBLY AND LOUDSPEAKER

US20260129369A1US 20260129369 A1US20260129369 A1US 20260129369A1US-20260129369-A1

Abstract

A vibration assembly and a loudspeaker are provided. The vibration assembly includes a yoke structure, a diaphragm, a magnet member, and a voice coil. The yoke structure includes a plurality of first magnetic conductive layers and a plurality of first through holes. The diaphragm is arranged at a top end of the yoke structure. The magnet member is arranged at a bottom of a cavity formed by the diaphragm and the yoke structure, and an annular magnetic gap is between the magnet member and the yoke structure. The voice coil is arranged in the magnetic gap and connected to the diaphragm.

Inventors

  • Huaming Wan
  • MingYa LUO
  • Xiaoxiang WEI

Assignees

  • MERRY ELECTRONICS (SUZHOU) CO., LTD.

Dates

Publication Date
20260507
Application Date
20251021
Priority Date
20241101

Claims (20)

  1. 1 . A vibration assembly, comprising: a yoke structure, comprising a plurality of nested first magnetic conductive layers, wherein each of the first magnetic conductive layers comprises a bowl-shaped part and a connection part, the connection part is arranged at a top end of the bowl-shaped part and extends laterally outward to form an annular edge, the yoke structure is provided with a plurality of first through holes, and each of the first through holes penetrates the bowl-shaped parts of the plurality of first magnetic conductive layers; a diaphragm, arranged at a top end of the yoke structure, wherein an edge of the diaphragm is connected to the connection part, and the diaphragm and the yoke structure define a cavity; a magnet member, arranged at a bottom of the cavity, wherein an annular magnetic gap is formed between a side surface of the magnet member and the yoke structure; and a voice coil, arranged in the annular magnetic gap, wherein a top end of the voice coil is connected to the diaphragm.
  2. 2 . The vibration assembly according to claim 1 , wherein sizes of the plurality of first magnetic conductive layers increase from inside to outside sequentially, and the plurality of first through holes are provided on the bowl-shaped parts in a matrix form.
  3. 3 . The vibration assembly according to claim 1 , wherein the yoke structure further comprises a second magnetic conductive layer, the second magnetic conductive layer has a bowl-shaped structure and is attached to an outer surface of the bowl-shaped part of the outermost first magnetic conductive layer, and the second magnetic conductive layer is provided with a plurality of second through holes corresponding to the plurality of first through holes.
  4. 4 . The vibration assembly according to claim 1 , wherein the yoke structure is provided with relief grooves, and the relief grooves penetrate the connection parts of the plurality of first magnetic conductive layers and enable an outside of the yoke structure to be in communication with the cavity.
  5. 5 . The vibration assembly according to claim 4 , wherein two sides of the voice coil are connected to wires, and the wires extend through the relief grooves.
  6. 6 . The vibration assembly according to claim 5 , further comprising a circuit board assembly that is arranged below the yoke structure and electrically connected to the wires.
  7. 7 . The vibration assembly according to claim 6 , further comprising support structures, wherein the support structures are arranged outside of the yoke structure, tops of the support structures extend into the relief grooves, bottoms of the support structures are connected to the circuit board assembly, and channels for accommodating the wires are provided inside the support structures.
  8. 8 . The vibration assembly according to claim 1 , wherein the magnet member comprises a central magnet and a magnetic conductive sheet, and the magnetic conductive sheet is arranged at a top end of the central magnet.
  9. 9 . The vibration assembly according to claim 1 , further comprising a bonding layer, wherein the diaphragm is connected to the connection part through the bonding layer.
  10. 10 . The vibration assembly according to claim 1 , wherein an inner surface of the bowl-shaped part of an outer first magnetic conductive layer of the first magnetic conductive layers is in contact with an outer surface of the bowl-shaped part of an inner first magnetic conductive layer of the first magnetic conductive layers.
  11. 11 . A loudspeaker, comprising a vibration assembly, wherein the vibration assembly comprises: a yoke structure, comprising a plurality of nested first magnetic conductive layers, wherein each of the first magnetic conductive layers comprises a bowl-shaped part and a connection part, the connection part is arranged at a top end of the bowl-shaped part and extends laterally outward to form an annular edge, the yoke structure is provided with a plurality of first through holes, and each of the first through holes penetrates the bowl-shaped parts of the plurality of first magnetic conductive layers; a diaphragm, arranged at a top end of the yoke structure, wherein an edge of the diaphragm is connected to the connection part, and the diaphragm and the yoke structure define a cavity; a magnet member, arranged at a bottom of the cavity, wherein an annular magnetic gap is formed between a side surface of the magnet member and the yoke structure; and a voice coil, arranged in the annular magnetic gap, wherein a top end of the voice coil is connected to the diaphragm.
  12. 12 . The loudspeaker according to claim 11 , wherein sizes of the plurality of first magnetic conductive layers increase from inside to outside sequentially, and the plurality of first through holes are provided on the bowl-shaped parts in a matrix form.
  13. 13 . The loudspeaker according to claim 11 , wherein the yoke structure further comprises a second magnetic conductive layer, the second magnetic conductive layer has a bowl-shaped structure and is attached to an outer surface of the bowl-shaped part of the outermost first magnetic conductive layer, and the second magnetic conductive layer is provided with a plurality of second through holes corresponding to the plurality of first through holes.
  14. 14 . The loudspeaker according to claim 11 , wherein the yoke structure is provided with relief grooves, and the relief grooves penetrate the connection parts of the plurality of first magnetic conductive layers and enable an outside of the yoke structure to be in communication with the cavity.
  15. 15 . The loudspeaker according to claim 14 , wherein two sides of the voice coil are connected to wires, and the wires extend through the relief grooves.
  16. 16 . The loudspeaker according to claim 15 , further comprising a circuit board assembly that is arranged below the yoke structure and electrically connected to the wires.
  17. 17 . The loudspeaker according to claim 16 , further comprising support structures, wherein the support structures are arranged outside of the yoke structure, tops of the support structures extend into the relief grooves, bottoms of the support structures are connected to the circuit board assembly, and channels for accommodating the wires are provided inside the support structures.
  18. 18 . The loudspeaker according to claim 11 , wherein the magnet member comprises a central magnet and a magnetic conductive sheet, and the magnetic conductive sheet is arranged at a top end of the central magnet.
  19. 19 . The loudspeaker according to claim 11 , further comprising a bonding layer, wherein the diaphragm is connected to the connection part through the bonding layer.
  20. 20 . The loudspeaker according to claim 11 , wherein an inner surface of the bowl-shaped part of an outer first magnetic conductive layer of the first magnetic conductive layers is in contact with an outer surface of the bowl-shaped part of an inner first magnetic conductive layer of the first magnetic conductive layers.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of Chinese Patent Application No. 202411554120.6, filed on Nov. 1, 2024, entitled “Vibration assembly and Loudspeaker”, which is incorporated herein by reference in its entirety. FIELD The present disclosure relates to the technical field of audio equipment, and particularly relates to a vibration assembly and a loudspeaker. BACKGROUND In a vibration assembly of an existing loudspeaker, a yoke is generally provided with a vent hole for adjusting internal pressure, so as to achieve a better sound production effect. In order to avoid influence of water and dust on internal sensitive assemblies and adjust and improve acoustic performance, a nylon mesh cloth is commonly used for covering the vent hole to isolate an inner cavity from an outside. However, the nylon mesh cloth is soft. When too large a nylon mesh cloth is used, acoustic resonance easily occurs. Thus, for a larger vent hole, a metal mesh cloth is used for replacing the nylon mesh cloth and is attached to the vent hole. With wide use of loudspeakers, mounting spaces of vibration assemblies have been gradually decreased. In this case, the design with a single vent hole can hardly improve a heat dissipation effect. In addition, a mounting process is more complicated because of operations of additionally providing vent holes and attaching meshes. SUMMARY The present disclosure provides a vibration assembly and a loudspeaker. In one aspect, embodiments of the present disclosure provide a vibration assembly. The vibration assembly includes: a yoke structure, a diaphragm, a magnet member, and a voice coil. The yoke structure includes a plurality of nested first magnetic conductive layers, and each of the first magnetic conductive layers includes a bowl-shaped part and a connection part. The connection part is arranged at a top end of the bowl-shaped part and extends laterally outward to form an annular edge. The yoke structure is provided with a plurality of first through holes, and each of the first through holes penetrates the bowl-shaped parts of the plurality of first magnetic conductive layers. The diaphragm is arranged at a top end of the yoke structure, and an edge of the diaphragm is connected to the connection part. The diaphragm and the yoke structure define a cavity. The magnet member is arranged at a bottom of the cavity, and an annular magnetic gap is formed between a side surface of the magnet member and the yoke structure. The voice coil is arranged in the annular magnetic gap, and a top end of the voice coil is connected to the diaphragm. In some embodiments, sizes of the plurality of first magnetic conductive layers increase from inside to outside sequentially. The plurality of first through holes are provided on the bowl-shaped parts in a matrix form. In some embodiments, the yoke structure further includes a second magnetic conductive layer. The second magnetic conductive layer has a bowl-shaped structure and is attached to an outer surface of the bowl-shaped part of the outermost first magnetic conductive layer. The second magnetic conductive layer is provided with a plurality of second through holes corresponding to the plurality of first through holes. In some embodiments, the yoke structure is provided with relief grooves. The relief grooves penetrate the connection parts of the plurality of first magnetic conductive layers and enable an outside of the yoke structure to be in communication with the cavity. In some embodiments, two sides of the voice coil are connected to wires, and the wires extend through the relief grooves. In some embodiments, the vibration assembly further includes a circuit board assembly. The circuit board assembly is arranged below the yoke structure and electrically connected to the wires. In some embodiments, the vibration assembly further includes support structures. The support structures are arranged at the outer side of the yoke structure. Tops of the support structures extend into the relief grooves. Bottoms of the support structures are connected to the circuit board assembly. Channels for accommodating the wires are provided inside the support structures. In some embodiments, the magnet member includes a central magnet and a magnetic conductive sheet. The magnetic conductive sheet is arranged at a top end of the central magnet. In some embodiments, the vibration assembly further includes a bonding layer. The diaphragm is connected to the connection parts through the bonding layer. In another aspect, embodiments of the present disclosure provide a loudspeaker. The loudspeaker includes the above vibration assembly. BRIEF DESCRIPTION OF DRAWINGS With reference to the following description of accompanying drawings on examples of the present disclosure, the above and other objectives, features and advantages of the present disclosure will become more apparent. In the drawings: FIG. 1 is a top perspective view of a vibration assembl