CN220307372U

CN220307372U - Micro-speaker

Info

Publication number: CN220307372U
Application number: CN202321685743.8U
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: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-01-05
Anticipated expiration: 2033-06-29

Abstract

The utility model discloses a miniature loudspeaker, which comprises a vibrating diaphragm assembly, a framework and a plurality of voice coils, wherein the voice coils with the number being a plurality are arranged in a row, two adjacent voice coils are connected and fixed with each other, and the number of the frameworks is less than that of the voice coils; and part of the voice coil is connected with the vibrating diaphragm assembly through the framework. In this miniature speaker, the quantity of skeleton is less than the quantity of voice coil loudspeaker voice coil, has reduced the raw materials cost that the miniature speaker formed the part of quantity that has reduced the skeleton, simultaneously, can also reduce miniature speaker's assembly process, does benefit to the equipment cost that reduces miniature speaker. The whole weight of vibration subassembly can also be alleviateed after the quantity of skeleton reduces, the sensitivity of micro-speaker is favorable to promoting.

Description

Micro-speaker

Technical Field

The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker.

Background

The micro-speaker is widely applied to portable electronic devices such as mobile phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, performance requirements for the micro-speakers used thereon are increasing.

In order to promote micro-speaker's performance, prior art begins to adopt many voice coils design, simultaneously, in order to make the voice coil loudspeaker voice coil be located the position of magnetic gap more suitable, partial micro-speaker can add metal skeleton between voice coil loudspeaker voice coil and vibrating diaphragm subassembly, adjusts the position of voice coil loudspeaker voice coil at magnetic gap through the height of adjustment metal skeleton, makes micro-speaker's performance further promote.

Currently, in the micro-speaker of many voice coil loudspeaker voice coil architectures, voice coil loudspeaker voice coil and metal skeleton are generally one-to-one setting, and when the quantity of voice coil loudspeaker voice coil is great, the quantity of corresponding metal skeleton is also more, and the increase of metal skeleton quantity can lead to production process to increase, is unfavorable for the reduction of cost, and simultaneously, the increase of metal skeleton also can increase vibration system's whole weight, restricts micro-speaker and further promotes performance sensitivity.

Disclosure of Invention

The utility model solves the technical problems that: a high sensitivity low cost micro speaker is provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker, comprising:

a diaphragm assembly;

the voice coils are arranged in a row, and two adjacent voice coils are connected and fixed with each other;

a number of bobbins less than the number of voice coils;

and part of the voice coil is connected with the vibrating diaphragm assembly through the framework.

In one embodiment, at least two voice coils are simultaneously connected to the same frame of the frame.

In an embodiment, the number of the skeletons is plural, and two adjacent skeletons are connected to form an integral structure.

In an embodiment, the combined structure formed by connecting the frame and the voice coil is an axisymmetric structure.

In an embodiment, the number of the voice coils is three, the number of the frameworks is two, and the voice coils on two sides of the three voice coils are respectively connected with the frameworks.

In an embodiment, the number of the voice coils is three, the number of the frameworks is one, and the voice coil positioned in the middle of the three voice coils is connected with the frameworks.

In an embodiment, one side of the voice coils located at two sides of the three voice coils is respectively connected with the framework.

In an embodiment, the number of the voice coils is three, the number of the skeletons is one, and the skeletons are connected with a group of opposite sides of the voice coil in the middle and one side of the voice coil on two sides.

In an embodiment, the number of the voice coils is four, the number of the frameworks is two, the voice coils located on two sides of the four voice coils are connected with the two frameworks in a one-to-one correspondence manner, or the two voice coils located in the center of the four voice coils are connected with the two frameworks in a one-to-one correspondence manner.

In an embodiment, the number of the voice coils is five, the number of the skeletons is two, and two skeletons are arranged at intervals of one or three voice coils; or the number of the skeletons is three, and the three voice coils positioned in the center of the five voice coils are connected with the three skeletons in a one-to-one correspondence manner.

The utility model has the beneficial effects that: in this miniature speaker, the quantity of skeleton is less than the quantity of voice coil loudspeaker voice coil, has reduced the raw materials cost that the miniature speaker formed the part of quantity that has reduced the skeleton, simultaneously, can also reduce miniature speaker's assembly process, does benefit to the equipment cost that reduces miniature speaker. The whole weight of vibration subassembly can also be alleviateed after the quantity of skeleton reduces, the sensitivity of micro-speaker is favorable to promoting.

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 a cross-sectional view of a micro-speaker according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a portion of a micro-speaker according to a first embodiment of the present utility model;

fig. 3 is a cross-sectional view of a micro-speaker according to a second embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a part of the micro-speaker according to the second embodiment of the present utility model;

fig. 5 is a cross-sectional view of a micro speaker according to a third embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a part of the structure of a micro-speaker according to a third embodiment of the present utility model;

fig. 7 is a cross-sectional view of a micro-speaker according to a fourth embodiment of the present utility model;

fig. 8 is a schematic structural diagram of a part of the structure of a micro-speaker according to a fourth embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a part of the structure of a micro-speaker according to a fifth embodiment of the present utility model;

fig. 10 is a schematic structural diagram of a part of the structure of a micro-speaker according to a sixth embodiment of the present utility model;

fig. 11 is a schematic structural diagram of a part of the structure of a micro-speaker according to a seventh embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic circuit assembly;

3. a diaphragm assembly;

4. a skeleton; 41. a frame;

5. and a voice coil.

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 this application, unless specifically stated 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 terms in this application will be understood by those of ordinary skill in the art as the case may be.

Example 1

Referring to fig. 1 and 2, a first embodiment of the utility model is as follows: the micro-speaker can be applied to electronic equipment such as mobile phones, notebook computers, hearing aids and the like.

The miniature loudspeaker comprises a basin frame 1, and a vibration assembly and a magnetic circuit assembly 2 which are respectively connected with the basin frame 1, wherein the vibration assembly comprises a vibrating diaphragm assembly 3, a framework 4 and a plurality of voice coils 5, and the magnetic circuit assembly 2 is provided with a magnetic gap for the voice coils 5 to move; the voice coils 5 with a plurality are arranged in a row, and two adjacent voice coils 5 are connected and fixed with each other; the number of the frames 4 is smaller than that of the voice coils 5, the frames 4 include a plurality of frames 41, in this embodiment, the frames 4 include four frames 41, and the four frames 41 are connected end to form a ring frame structure; and one part of the voice coil 5 is connected with the vibrating diaphragm assembly 3 through the framework 4, and the other part of the voice coil 5 and the vibrating diaphragm assembly 3 form an air interlayer.

There are many specific measures for connecting and fixing the adjacent two voice coils 5 to each other, such as connection by glue, connection by double-sided offset paper, connection by self-adhesive layer of the enamel wire itself for winding the voice coils 5, and the like. The voice coil 5 and the frame 4 may be connected by glue, by double-sided tape, or by other means. Similarly, the diaphragm assembly 3 and the frame 4 may be connected by glue, by double sided adhesive tape, or by other means.

In order to balance the stress of the vibration assembly and thereby improve the polarization of the voice coil 5, it is preferable that the combined structure formed by connecting the bobbin 4 and the voice coil 5 is an axisymmetric structure.

In this embodiment, the number of the voice coils 5 is three, the number of the frameworks 4 is two, two voice coils 5 located at two sides of the three voice coils 5 are respectively connected with the frameworks 4, and an air interlayer is formed between the voice coil 5 located in the middle of the three voice coils 5 and the diaphragm assembly 3. That is, one of the voice coils 5 is spaced between the two bobbins 4.

Example two

Referring to fig. 3 and 4, a second 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 number of the bobbins 4 is one less than that of the bobbins 4 in the first embodiment.

Specifically, in this embodiment, the number of the voice coils 5 is three, the number of the bobbins 4 is only one, the voice coils 5 located in the middle of the three voice coils 5 are connected with the bobbins 4, and an air interlayer is formed between the voice coils 5 located at two sides and the diaphragm assembly 3.

This can further reduce the number of the bobbins 4, thereby reducing the overall weight of the vibration assembly and further improving the sensitivity of the micro speaker.

Example III

Referring to fig. 5 and 6, a third embodiment of the present utility model is a further improvement based on the second embodiment, and is different from the second embodiment in that: at least two voice coils 5 are simultaneously connected to the same frame 41 of the frame 4.

In this embodiment, one side of the voice coil 5 located at two sides of the three voice coils 5 is connected to the frame 4 respectively. Specifically, adjacent sides of two adjacent voice coils 5 are simultaneously connected to the same frame 41 of the frame 4.

Therefore, the total area of connection between the voice coil 5 and the frame 4 can be effectively increased, the connection effect between the voice coil 5 and the frame 4 is improved, the structural stability of the vibration assembly is enhanced, the service life of the micro-speaker is prolonged, and meanwhile, the frame 41 connecting the two voice coils 5 is large in width, so that the frame 4 has strong structural strength.

Example IV

Referring to fig. 7 and 8, a fourth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: in this embodiment, the number of the voice coils 5 is three, the number of the bobbins 4 is one, and the bobbins 4 are connected to a set of opposite sides of the voice coils 5 located in the middle of the three voice coils 5 and one side of the voice coils 5 located at both sides. In this way, the bobbin 4 can be directly connected to each of the voice coils 5, which contributes to improving the structural stability of the vibration assembly.

Example five

Referring to fig. 9, a fifth 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 number of the voice coils 5 is four, the number of the frameworks 4 is two, and the two voice coils 5 positioned in the center of the four voice coils 5 are connected with the two frameworks 4 in a one-to-one correspondence mode.

In order to further facilitate the assembly of the micro-speaker and improve the structural stability of the vibration assembly, when the number of the frames 4 is plural, it is preferable that two adjacent frames 4 are connected to form an integrated structure. In this embodiment, the two skeletons 4 are integrally formed by stamping.

Example six

Referring to fig. 10, the sixth embodiment of the present utility model is a parallel solution of the fifth embodiment, and is different from the fifth embodiment in that: the voice coils 5 positioned at two sides of the four voice coils 5 are connected with the two frameworks 4 in a one-to-one correspondence manner, namely, the two frameworks 4 are arranged at intervals by the two voice coils 5.

In this embodiment, the two skeletons 4 are not connected to each other, and in other embodiments, it is also possible that the two skeletons 4 are connected to each other and fixed.

Example seven

Referring to fig. 11, a seventh embodiment of the present utility model is a parallel technical solution of the first embodiment, and is different from the first embodiment in that:

in this embodiment, the number of voice coils 5 is five, the number of bobbins 4 is two, and two bobbins 4 are disposed with a space between the voice coils 5.

Of course, in a parallel embodiment, two bobbins 4 may be spaced three voice coils 5.

In addition, when the number of the voice coils 5 is five, the number of the bobbins 4 may be three, and in this case, the three voice coils 5 located at the center of the five voice coils 5 are connected to the three bobbins 4 in a one-to-one correspondence. Further, at this time, the three skeletons 4 may be connected to each other to form an integral structure, or may be independent of each other.

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. Miniature speaker, its characterized in that: comprising

A diaphragm assembly;

a number of bobbins less than the number of voice coils;

2. A micro-speaker as claimed in claim 1, wherein: at least two voice coils are simultaneously connected with the same frame of the framework.

3. A micro-speaker as claimed in claim 1, wherein: the number of the skeletons is multiple, and two adjacent skeletons are connected to form an integrated structure.

4. A micro-speaker as claimed in claim 1, wherein: the combined structure formed by connecting the framework and the voice coil is an axisymmetric structure.

5. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is three, the number of the frameworks is two, and the voice coils positioned on two sides in the three voice coils are respectively connected with the frameworks.

6. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is three, the number of the frameworks is one, and the voice coils positioned in the middle of the three voice coils are connected with the frameworks.

7. A micro-speaker as claimed in claim 6, wherein: and one side edges of the voice coils positioned at two sides of the three voice coils are respectively connected with the framework.

8. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is three, the number of the frameworks is one, and the frameworks are connected with a group of opposite sides of the voice coils positioned in the middle and one side of the voice coils positioned at two sides.

9. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is four, the number of the frameworks is two, the voice coils positioned at two sides in the four voice coils are connected with the two frameworks in one-to-one correspondence, or the two voice coils positioned in the center in the four voice coils are connected with the two frameworks in one-to-one correspondence.

10. A micro-speaker as claimed in claim 4, wherein: the number of the voice coils is five, the number of the frameworks is two, and the two frameworks are arranged at intervals of one or three voice coils; or the number of the skeletons is three, and the three voice coils positioned in the center of the five voice coils are connected with the three skeletons in a one-to-one correspondence manner.