CN223322154U

CN223322154U - Sounding unit

Info

Publication number: CN223322154U
Application number: CN202422177690.XU
Authority: CN
Inventors: 林嘉平; 康恺轩
Original assignee: Weishi Technology Co ltd
Current assignee: Weishi Technology Co ltd
Priority date: 2024-09-05
Filing date: 2024-09-05
Publication date: 2025-09-09
Anticipated expiration: 2034-09-05

Abstract

The utility model discloses a sound generating unit which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are arranged on the basin frame, the vibration system comprises a vibrating diaphragm assembly, a voice coil main body, a conducting plate and an outer lead, the vibrating diaphragm assembly is connected to the basin frame, the voice coil main body is connected to the inner side face of the vibrating diaphragm assembly, the voice coil main body is provided with the voice coil lead, one end of the conducting plate is connected with the voice coil lead, and one end of the outer lead is connected with one end of the conducting plate, which is far away from the voice coil lead. The voice coil lead wire of this sound generating unit passes through the current conducting plate and connects outer lead wire, for the voice coil lead wire of drawing forth by the voice coil body, outer lead wire can be made by the better material of ductility to reduce the cracked risk in the long-term vibration in-process, be favorable to improving this sound generating unit's life.

Description

Sounding unit

Technical Field

The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit.

Background

The sound generating unit is an important acoustic component in the portable electronic equipment, is used for converting acoustic electric signals into acoustic signals and transmitting the acoustic signals out, and is an energy conversion device. The sound generating unit generally comprises a vibration system and a magnetic circuit system, the vibration system comprises a vibrating diaphragm and a voice coil which are combined together, the voice coil is formed by winding an enameled wire, and the starting end and the tail end of the voice coil wire are respectively led out and are electrically connected with a circuit as voice coil leads.

In order to improve performance of the voice unit, the traditional voice unit voice coil enameled wire conductor material can be made of materials with lighter density, such as aluminum, copper-clad aluminum and the like, however, the aluminum or copper-clad aluminum and other materials with lighter density have poorer ductility, the amplitude of the traditional voice unit is larger and larger, the pulling force and stress born by the outer lead of the voice coil are increased, and phenomena such as broken wires are easy to occur in long-term use or reliability test processes.

Disclosure of utility model

The utility model aims to solve the technical problem of providing the sounding unit with the novel structure, which has good ductility of an outer lead wire connected with the voice coil and is not easy to cause wire breakage.

In order to solve the technical problems, the utility model adopts the technical scheme that the sounding unit comprises a basin frame, and a vibration system and a magnetic circuit system which are arranged on the basin frame, wherein the vibration system comprises:

the vibrating diaphragm assembly is connected to the basin frame;

The voice coil body is connected to the inner side surface of the vibrating diaphragm assembly, and a voice coil lead is arranged on the voice coil body;

one end of the conducting plate is connected with the voice coil lead wire;

and one end of the outer lead is connected with one end of the conducting plate, which is far away from the voice coil lead.

Further, the conductive plate is a flexible circuit board or a hard circuit board.

Further, the outer lead is made of copper, copper alloy, silver or silver alloy.

Further, the outer lead is coated with an elastic layer.

Further, the conductive plate is connected to the inner side surface of the diaphragm assembly.

Further, the vibrating diaphragm assembly comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, and the folded ring part comprises a plurality of folded ring areas which are sequentially connected from inside to outside.

Further, the diaphragm assembly further comprises a middle patch, and the middle patch is connected to the inner fixing portion.

Furthermore, a clearance groove is formed in the magnetic circuit system corresponding to the conducting plate.

Further, the magnetic circuit system comprises a yoke and magnetic steel, the yoke is arranged on one side, far away from the vibration system, of the basin frame, and the magnetic steel is connected to the inner side face of the yoke.

Further, the magnetic circuit system further comprises a washer connected to one surface of the magnetic steel, which is far away from the yoke, and the washer is provided with the empty avoiding groove.

The voice coil lead wire of the voice unit is connected with the outer lead wire through the conductive plate, and compared with the voice coil lead wire led out by the voice coil main body, the voice coil lead wire of the voice unit can be made of materials with better ductility, so that the risk of fracture in a long-term vibration process is reduced, and the service life of the voice unit is prolonged.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a sound generating unit according to a first embodiment of the present utility model;

fig. 2 is a cross-sectional view of a sound generating unit according to a first embodiment of the present utility model;

FIG. 3 is an exploded view of a sound unit according to a first embodiment of the present utility model;

Fig. 4 is a schematic diagram of a part of the structure of a sound generating unit (a hidden diaphragm assembly) according to the first embodiment of the present utility model;

Fig. 5 is a cross-sectional view of an outer lead and an elastic layer in a sound emitting unit according to a first embodiment of the present utility model.

Description of the reference numerals:

1. A basin stand;

2. The vibration system comprises a vibration system, a vibration film assembly, 211, an inner fixing part, 212, a folded ring part, 213, an outer fixing part, 214, a middle paste, 22, a voice coil main body, 23, a voice coil lead, 24, a conductive plate, 25, an outer lead, 251 and an elastic layer;

3. 31 parts of magnetic circuit system, 31 parts of yoke iron, 32 parts of magnetic steel, 33 parts of washer, 331 parts of washer and empty-avoiding groove.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 5, a sound generating unit includes a frame 1, and a vibration system 2 and a magnetic circuit system 3 disposed on the frame 1, wherein the vibration system 2 includes:

A vibrating diaphragm assembly 21, wherein the vibrating diaphragm assembly 21 is connected to the basin stand 1;

A voice coil main body 22, wherein the voice coil main body 22 is connected to the inner side surface of the diaphragm assembly 21, and a voice coil lead 23 is arranged on the voice coil main body 22;

A conductive plate 24, one end of the conductive plate 24 is connected with the voice coil lead 23;

an outer lead 25, one end of the outer lead 25 is connected to an end of the conductive plate 24 remote from the voice coil lead 23.

As can be seen from the above description, the voice coil lead 23 of the present sound generating unit is connected to the outer lead 25 through the conductive plate 24, and the outer lead 25 may be made of a material having better ductility with respect to the voice coil lead 23 guided out of the voice coil body 22, thereby reducing the risk of breakage during long-term vibration, and being advantageous for improving the service life of the present sound generating unit.

Further, the conductive plate 24 is a flexible circuit board or a hard circuit board.

As can be seen from the above description, the type of the conductive plate 24 may be selected according to actual use requirements or production conditions.

Further, the outer lead 25 is made of copper, copper alloy, silver or silver alloy.

As can be seen from the above description, the material of the outer lead 25 can be selected according to the actual use requirement or production condition.

Further, the outer lead 25 is covered with an elastic layer 251.

As can be seen from the above description, the elastic layer 251 can protect the lead, effectively reduce the risk of breakage caused by excessive pulling force of the external lead 25 when the voice coil main body 22 vibrates, and is beneficial to enhancing the reliability of the sound generating unit and prolonging the service life of the sound generating unit.

Further, the conductive plate 24 is connected to the inner side of the diaphragm assembly 21.

As can be seen from the above description, the conductive plate 24 is connected to the diaphragm assembly 21, so that breakage of the connection portion between the conductive plate 24 and the outer lead 25 caused by excessive shaking of the conductive plate 24 relative to the outer lead 25 can be avoided.

Further, the diaphragm assembly 21 includes an inner fixing portion 211, a ring-folding portion 212 and an outer fixing portion 213, which are sequentially connected from inside to outside, and the ring-folding portion 212 includes a plurality of ring-folding regions sequentially connected from inside to outside.

As can be seen from the above description, the provision of the plurality of ring-shaped regions can raise the deformation amount of the diaphragm assembly 21, so that the diaphragm assembly 21 can vibrate with a larger amplitude.

Further, the diaphragm assembly 21 further includes a middle patch 214, and the middle patch 214 is connected to the inner fixing portion 211.

As can be seen from the above description, the middle paste 214 can increase the rigidity of the diaphragm assembly 21, improve the high-frequency response of the sound generating unit, and ensure the high-frequency characteristic of the diaphragm assembly 21.

Further, a space-avoiding groove 331 is formed on the magnetic circuit 3 corresponding to the conductive plate 24.

As is apparent from the above description, the provision of the clearance groove 331 can prevent the conductive plate 24 from colliding with the magnetic circuit system 3 to cause breakage of the conductive plate 24, the connection of the conductive plate 24 with the voice coil lead 23, and the connection of the conductive plate 24 with the outer lead 25.

Further, the magnetic circuit system 3 includes a yoke 31 and a magnetic steel 32, the yoke 31 is disposed on a side of the basin frame 1 away from the vibration system 2, and the magnetic steel 32 is connected to an inner side surface of the yoke 31.

As can be seen from the above description, the yoke 31 plays a role of magnetic conduction, improves the sensitivity of the sound unit, and reduces the distortion of the sound unit.

Further, the magnetic circuit system 3 further includes a washer 33, the washer 33 is connected to a surface of the magnetic steel 32 away from the yoke 31, and the washer 33 is provided with the empty avoiding groove 331.

From the above description, the washer 33 plays a role of magnetic conduction, improves the sensitivity of the sound generating unit, and reduces the distortion of the sound generating unit.

Referring to fig. 1 to 5, a sound generating unit is widely used as an audio output element in electronic devices such as mobile phones, headphones, notebook computers, hearing aids, and the like.

The sound generating unit comprises a basin frame 1, a vibration system 2 and a magnetic circuit system 3, wherein the vibration system 2 and the magnetic circuit system 3 are arranged on the basin frame 1, the vibration system 2 comprises a vibrating diaphragm assembly 21, a voice coil main body 22, a conducting plate 24 and an outer lead 25, the vibrating diaphragm assembly 21 is connected to the basin frame 1, the voice coil main body 22 is connected to the inner side face of the vibrating diaphragm assembly 21, a voice coil lead 23 is arranged on the voice coil main body 22, one end of the conducting plate 24 is connected with the voice coil lead 23, and one end of the outer lead 25 is connected with one end of the conducting plate 24, which is far away from the voice coil lead 23. Specifically, the number of voice coil leads 23 is two, and the positive electrode and the negative electrode of the voice coil are connected to each other. The number of voice coil leads 23, conductive plates 24, and outer leads 25 are arranged in one-to-one correspondence. The ductility of the material of the outer lead 25 is better than the ductility of the material of the voice coil lead 23. In this embodiment, the conductive plate 24 is a flexible circuit board. The conductive plate 24 is provided with pads at both ends thereof, and the conductive plate 24 is connected to the voice coil lead 23 and the outer lead 25 through two pads, respectively. In other embodiments, it is also possible that the conductive plate 24 is a hard circuit board. Optionally, the voice coil lead 23 is made of materials including but not limited to aluminum, aluminum alloy and copper clad aluminum, and the outer lead 25 is made of materials including but not limited to copper, copper alloy, silver and silver alloy.

As shown in fig. 5, as a preferred embodiment, the outer lead 25 is covered with an elastic layer 251. The elastic layer 251 is made of rubber or plastic. The existence of the elastic layer 251 provides certain elasticity and damping for the outer lead 25, so that the vibration amplitude of the outer lead 25 can be effectively reduced, resonance can be effectively restrained, the outer lead 25 can be protected, the risk of breakage caused by overlarge pulling force of the outer lead 25 when the voice coil main body 22 vibrates can be effectively reduced, the reliability of the sounding unit can be enhanced, and the service life of the sounding unit can be prolonged.

As shown in fig. 2, in order to avoid breakage of the connection between the conductive plate 24 and the outer lead 25 due to excessive shaking of the conductive plate 24 with respect to the outer lead 25, the conductive plate 24 is connected to the inner side of the diaphragm assembly 21. Specifically, the conductive plate 24 is connected to the diaphragm assembly 21 by UV glue.

As shown in fig. 1 and 2, the diaphragm assembly 21 includes an inner fixing portion 211, a ring-folded portion 212, and an outer fixing portion 213, which are sequentially connected from inside to outside, and the ring-folded portion 212 includes a plurality of ring-folded regions, which are sequentially connected from inside to outside. The outer edge of the outer fixing part 213 is connected to the tub 1. In this embodiment, the number of the ring folding regions is two. The plurality of the bending ring areas can promote the deformation quantity which can be generated by the vibrating diaphragm assembly 21, so that the vibrating diaphragm assembly 21 can vibrate with larger amplitude.

As shown in fig. 1 and 2, the diaphragm assembly 21 further includes a middle patch 214, and the middle patch 214 is connected to the inner fixing portion 211. Specifically, the inner fixing portion 211 is ring-shaped, and the middle paste 214 is connected to the outer side surface of the inner fixing portion 211 and is disposed to cover the hollow area of the inner fixing portion 211. The conductive plate 24 is attached to the inner side of the center paste 214.

As shown in fig. 2 and 3, in order to ensure that the vibration system 2 has sufficient amplitude, the magnetic circuit system 3 is provided with a clearance groove 331 corresponding to the conductive plate 24. Specifically, the magnetic circuit system 3 includes a yoke 31 and a magnetic steel 32, the yoke 31 is disposed on one side of the basin frame 1 far away from the vibration system 2, and the magnetic steel 32 is connected to an inner side surface of the yoke 31. The magnetic circuit system 3 further comprises a washer 33, the washer 33 is connected to one surface of the magnetic steel 32, which is far away from the yoke 31, and a clearance groove 331 is formed in the washer 33.

In summary, the voice coil lead wire of the sound generating unit provided by the utility model is connected with the outer lead wire through the conductive plate, and compared with the voice coil lead wire led out by the voice coil main body, the outer lead wire can be made of a material with better ductility, so that the risk of fracture in the long-term vibration process is reduced, and the service life of the sound generating unit is prolonged.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims

1. A sound generating unit comprises a basin frame, and a vibration system and a magnetic circuit system which are arranged on the basin frame, and is characterized in that the vibration system comprises:

the vibrating diaphragm assembly is connected to the basin frame;

one end of the conducting plate is connected with the voice coil lead wire;

2. The sound generating unit according to claim 1, wherein the conductive plate is a flexible circuit board or a hard circuit board.

3. The sound generating unit according to claim 1, wherein the outer lead is made of copper, copper alloy, silver or silver alloy.

4. The sound generating unit according to claim 1, wherein the outer lead is coated with an elastic layer.

5. The sound generating unit of claim 1, wherein the conductive plate is attached to an inside surface of the diaphragm assembly.

6. The sound generating unit according to claim 1, wherein the diaphragm assembly comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, and the folded ring part comprises a plurality of folded ring areas which are sequentially connected from inside to outside.

7. The sound unit of claim 6, wherein the diaphragm assembly further comprises a center piece, the center piece being coupled to the inner fixing portion.

8. The sound generating unit according to claim 1, wherein the magnetic circuit system is provided with a clearance groove corresponding to the conductive plate.

9. The sound generating unit according to claim 8, wherein the magnetic circuit system comprises a yoke and a magnetic steel, the yoke is arranged on one side of the basin stand far away from the vibration system, and the magnetic steel is connected to the inner side surface of the yoke.

10. The sound generating unit according to claim 9, wherein the magnetic circuit further comprises a washer connected to a surface of the magnetic steel away from the yoke, and the washer is provided with the empty avoiding groove.