CN219876102U

CN219876102U - Sound producing unit

Info

Publication number: CN219876102U
Application number: CN202321153324.XU
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-10-20
Anticipated expiration: 2033-05-12

Abstract

The utility model discloses a sound generating unit which comprises a magnetic cover, a plurality of voice coils and a plurality of central magnetic structures, wherein the central magnetic structures are arranged in one-to-one correspondence with the voice coils; the magnetic cover is connected with the central magnetic structure and is provided with a stamping convex hull, and the top surface of the stamping convex hull is lower than or flush with the top surface of the central magnetic structure; at least one group of adjacent two voice coils are correspondingly provided with the stamping convex hulls. The stamping convex hulls are arranged on the magnetic cover, and the stamping convex hulls are used for replacing additionally arranged magnetic steel and washer, so that the assembly steps of the sounding unit are simplified, and the assembly efficiency of the sounding unit is improved; the height of the stamping convex hulls is enough, so that the stamping convex hulls can play a good role in magnetic conduction; the existence of the stamping convex hulls is beneficial to outward heat dissipation of the sounding unit and is beneficial to ensuring the performance and the service life of the sounding unit; moreover, the inner cavity of the stamping convex hull can be communicated with the rear cavity of the sounding module, so that the actual volume of the rear cavity is increased, and the improvement of the acoustic performance of the sounding unit is facilitated.

Description

Sound producing unit

Technical Field

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

Background

The sound generating unit is used as a common electroacoustic transducer for converting electric energy into acoustic energy, and plays an indispensable role in a sound emitting system.

In order to improve the acoustic performance of the sound generating unit, a sound generating unit with a multi-voice coil structure has been disclosed in chinese patent publication No. CN216700307U, for example, in which a multi-voice coil large-amplitude speaker is disclosed, and the speaker can realize large amplitude, but the speaker has numerous parts (especially, additional magnetic steel and washer are disposed between two adjacent voice coils), so that the assembly process is complicated, resulting in high manufacturing cost.

Disclosure of Invention

The utility model mainly aims to provide a sounding unit with a novel structure, and aims to solve the technical problem that the assembly process of the sounding unit of the existing multi-voice coil framework is complicated.

In order to solve the technical problems, the utility model adopts the following technical scheme: a sound generating unit comprising:

a plurality of voice coils;

the plurality of central magnetic structures are arranged in one-to-one correspondence with the voice coils;

the magnetic cover is connected with the central magnetic structure and is provided with a stamping convex hull, and the top surface of the stamping convex hull is lower than or flush with the top surface of the central magnetic structure;

at least one group of adjacent two voice coils are correspondingly provided with the stamping convex hulls.

Further, the magnetic cover is made of SPCC material.

Further, the top surface of the stamping convex hull is provided with an opening, and the opening is communicated with the inner cavity of the stamping convex hull.

Further, the number of the voice coils is two.

Further, the number of the voice coils is three, and the three voice coils are arranged in a row or in an L shape.

Further, the number of the voice coils is four, and the four voice coils are arranged in one row or two rows.

Further, the magnetic shield also comprises a side magnetic structure arranged on the magnetic shield, wherein the side magnetic structure is arranged on the outer side of the short side and/or the outer side of the long side of the central magnetic structure.

Further, the magnetic shield is provided with a flanging which is formed by bending, and the flanging is arranged on the outer side of the short side and/or the outer side of the long side of the central magnetic structure.

Further, at least two of the voice coils are made of the same or different materials.

Further, the voice coil loudspeaker further comprises a basin frame and a vibrating diaphragm assembly, wherein the vibrating diaphragm assembly is connected with the basin frame and the voice coil loudspeaker.

The utility model has the beneficial effects that: the voice unit is different from the existing voice unit with the multi-voice coil framework, the stamping convex hull is arranged on the magnetic cover, and the stamping convex hull is used for replacing additionally arranged magnetic steel and washer, so that the assembly steps of the voice unit are simplified, the assembly efficiency of the voice unit is improved, and the manufacturing cost of the voice unit is reduced; moreover, the stamping convex hulls are high enough, so that the magnetic conduction effect can be good, and the influence of the reduction of the magnetic steel on the acoustic performance of the sounding unit can be reduced; the existence of the stamping convex hulls is also beneficial to outward heat dissipation of the sounding unit, so that the phenomena of demagnetization of magnetic steel, collapse of the vibrating diaphragm, failure of glue and the like caused by overheating or overhigh temperature of the sounding unit are avoided, and the performance and the service life of the sounding unit are guaranteed; moreover, the inner cavity of the stamping convex hull can be communicated with the rear cavity of the sounding module, so that the actual volume of the rear cavity is increased, and the improvement of the acoustic performance of the sounding unit is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a sound 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 a schematic structural diagram of a sound generating unit according to a first embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a partial area of a sound emitting unit according to a second embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a part of the sound generating unit according to the third embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a part of the sound generating unit according to the fourth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

21. a sound membrane; 22. middle paste; 23. a voice coil;

3. a magnetic shield; 31. stamping the convex hull; 311. an opening; 32. flanging;

4. a central magnetic structure; 41. a center magnetic steel; 42. a central washer;

51. edge magnetic steel; 52. bian Huasi.

Detailed Description

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, if the meaning of "and/or" is presented throughout this document to include three parallel schemes, taking "and/or" as an example, including a scheme, or a scheme that is satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 to 3, a first embodiment of the present utility model is as follows: the sounding unit can be applied to electronic equipment such as mobile phones, tablet computers, intelligent watches, game handles and the like.

The sound generating unit comprises a basin frame 1, and a vibration assembly and a magnetic circuit assembly which are respectively arranged on the basin frame 1, wherein the vibration assembly comprises a vibrating diaphragm assembly and a plurality of voice coils 23 arranged on the vibrating diaphragm assembly, in the embodiment, the vibrating diaphragm assembly comprises a sound membrane 21 and a middle paste 22 arranged on the sound membrane 21, the sound membrane 21 is connected with the basin frame 1, and in other embodiments, the vibrating diaphragm assembly can be formed by the sound membrane 21 only and is not provided with the middle paste 22;

the magnetic circuit assembly comprises a magnetic cover 3, a central magnetic structure 4 and side magnetic structures, wherein the central magnetic structure 4 and the side magnetic structures are respectively arranged on the magnetic cover 3, magnetic gaps for the voice coil 23 to move are formed between the central magnetic structure 4 and the side magnetic structures, the number of the central magnetic structures 4 is also a plurality, and the central magnetic structures 4 and the voice coils 23 are arranged in a one-to-one correspondence manner; the magnetic cover 3 is provided with a stamping convex hull 31, and the top surface of the stamping convex hull 31 is lower than or flush with the top surface of the central magnetic structure 4; the stamping convex hulls 31 are correspondingly arranged between at least one group of two adjacent voice coils 23, and preferably, the stamping convex hulls 31 are correspondingly arranged between each group of two adjacent voice coils 23.

The central magnetic structure 4 comprises a central magnetic steel 41 and a central washer 42, and the central magnetic steel 41 is connected with the magnetic cover 3 and the central washer 42.

The magnetic cover 3 is preferably made of a material with high magnetic permeability, and in this embodiment, the material of the magnetic cover 3 is an SPCC material.

In this embodiment, the side magnetic structure includes side magnetic steels 51 and Bian Huasi, the side magnetic steel 51 connects the Bian Huasi and the magnetic cover 3, and optionally, the Bian Huasi and the basin frame 1 are integrally formed by insert injection molding.

Specifically, the side magnetic structures are provided on the outer sides of the short sides and/or the long sides of the center magnetic structure 4. In this embodiment, the side magnetic structures are disposed on the outer sides of the short sides and the long sides of the central magnetic structure 4.

Although in the present embodiment, the sound generating unit is a dual voice coil 23 structure, that is, the number of voice coils 23 is two, in other embodiments, the number of voice coils 23 may be three, four or more, in detail, when the number of voice coils 23 is three, three voice coils 23 are arranged in a row or in an L shape; when the number of the voice coils 23 is four, the four voice coils 23 are arranged in a row or in two rows. Therefore, the arrangement of the voice coils 23 can be varied in the same number of voice coils 23, and the arrangement can be specifically selected according to the actual requirement.

At least two of the voice coils 23 may be made of the same material or different materials, that is, different voice coils 23 may be made of the same material or different materials. In this embodiment, the voice coil 23 is wound with an enameled wire, and the section of the enameled wire may be circular, polygonal, or other shapes.

Example two

Referring to fig. 4, a second embodiment of the present utility model is a further improvement of the punched convex hull 31 based on the first embodiment, and is different from the first embodiment in that: the top surface of the punching convex hull 31 is provided with an opening 311, and the opening 311 is communicated with the inner cavity of the punching convex hull 31.

The opening 311 can facilitate the circulation of the gas inside and outside the sounding unit, so that the heat inside the sounding unit can be dissipated outwards more easily, and the heat dissipation performance of the sounding unit is improved.

Example III

Referring to fig. 5, a third embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: the magnetic shield 3 is provided with a flanging 32 which is formed by bending, and the flanging 32 is arranged on the outer side of the short side and/or the outer side of the long side of the central magnetic structure 4.

In this embodiment, the edge magnet steel 51 located outside the long edge of the central magnet structure 4 is replaced by the flange 32. Therefore, the assembly process of the sounding unit can be effectively simplified, and the production efficiency of the sounding unit can be improved.

Example IV

Referring to fig. 6, the fourth embodiment of the present utility model is an expansion made on the basis of the third embodiment, and is different from the third embodiment in that: not only the side magnetic steel located outside the long side of the central magnetic structure 4 is replaced by the flange 32, but also the side magnetic steel located outside the short side of the central magnetic structure 4 is replaced by the flange 32, i.e. there is no side magnetic steel in the sound generating unit of the present embodiment.

At this time, the sounding unit may have any edge washer, and when the sounding unit has the Bian Huasi, the flange 32 is fixedly connected with the Bian Huasi, and the connection fixing manner includes but is not limited to welding; when the sounding unit does not have the Bian Huasi, the flange 32 is fixedly connected with the basin frame.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. Sound production unit, its characterized in that: comprising

A plurality of voice coils;

2. The sound emitting unit of claim 1, wherein: the magnetic cover is made of SPCC material.

3. The sound emitting unit of claim 1, wherein: the top surface of punching press convex closure is equipped with the opening, the opening intercommunication the inner chamber of punching press convex closure.

4. The sound emitting unit of claim 1, wherein: the number of the voice coils is two.

5. The sound emitting unit of claim 1, wherein: the number of the voice coils is three, and the three voice coils are arranged in a row or in an L shape.

6. The sound emitting unit of claim 1, wherein: the number of the voice coils is four, and the four voice coils are arranged in one row or two rows.

7. The sound emitting unit of claim 1, wherein: the magnetic shield also comprises a side magnetic structure arranged on the magnetic shield, wherein the side magnetic structure is arranged on the outer side of the short side and/or the outer side of the long side of the central magnetic structure.

8. The sound emitting unit of claim 1, wherein: the magnetic shield is provided with a flanging which is formed by bending, and the flanging is arranged on the outer side of the short side and/or the outer side of the long side of the central magnetic structure.

9. The sound emitting unit of claim 1, wherein: at least two voice coils are made of the same or different materials.

10. The sound emitting unit of claim 1, wherein: still include basin frame and vibrating diaphragm subassembly, vibrating diaphragm subassembly connects the basin frame with the voice coil loudspeaker voice coil.