CN219536289U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN219536289U CN219536289U CN202320134105.0U CN202320134105U CN219536289U CN 219536289 U CN219536289 U CN 219536289U CN 202320134105 U CN202320134105 U CN 202320134105U CN 219536289 U CN219536289 U CN 219536289U
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Abstract
The utility model discloses a micro loudspeaker, which comprises a voice coil and a magnetic circuit assembly, wherein the voice coil comprises a main body part and an extension part connected with the main body part; the magnetic circuit assembly comprises a main magnetic circuit gap and a branch magnetic circuit gap communicated with the main magnetic circuit gap, the main body part of the voice coil is positioned in the main magnetic circuit gap, and the extension part is positioned in the branch magnetic circuit gap; the miniature loudspeaker provided by the utility model has the characteristic of good acoustic performance, the extension part connected with the main part of the voice coil is arranged on the main part of the voice coil, so that the whole length of the voice coil is increased, and the branch magnetic circuit gap communicated with the main magnetic circuit gap of the magnetic circuit assembly is arranged, so that the main part is positioned in the main magnetic circuit gap, the extension part of the voice coil is positioned in the branch magnetic circuit gap, the effective length of the voice coil in the magnetic circuit gap is increased, the magnetic force utilization rate of the magnetic circuit assembly is improved, and the acoustic performance of the miniature loudspeaker is improved.
Description
Technical Field
The utility model relates to the field of acoustic devices, in particular to a miniature loudspeaker.
Background
As a device capable of converting electric energy into acoustic energy, a speaker has been widely used in microelectronic devices such as smart phones, camcorders, cameras, and notebook computers. As microelectronic devices become lighter and thinner, sound quality and loudness requirements become higher.
The speaker generally includes a voice coil and a magnetic circuit assembly having a magnetic circuit gap in which the voice coil is positioned, and the voice coil is vibrated in the magnetic circuit gap by energizing the voice coil, so that the speaker converts an electric signal into an acoustic signal; the acoustic performance of the loudspeaker is affected by the length of the voice coil in the magnetic circuit gap; the voice coil of the speaker in the prior art is generally in a regular round shape or a square shape, and along with the light and thin speaker, the length of the voice coil in the magnetic path gap is difficult to be improved, so that the improvement of the acoustic performance of the micro speaker is limited, and therefore, how to improve the acoustic performance of the micro speaker becomes a technical problem to be solved in the art.
Disclosure of Invention
The main purpose of the utility model is to provide a micro-speaker with good acoustic performance.
In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker includes
A voice coil including a main body portion and an extension portion connected to the main body portion;
the magnetic circuit assembly comprises a main magnetic circuit gap and a branch magnetic circuit gap communicated with the main magnetic circuit gap, the main body part of the voice coil is positioned in the main magnetic circuit gap, and the extension part is positioned in the branch magnetic circuit gap.
In an embodiment, the number of the extending portions is a plurality, and the number of the magnetic circuit gaps is equal to the number of the extending portions and corresponds to one.
In one embodiment, the extension portion extends to the outside or inside of the main body portion.
In an embodiment, at least one of the extension portions extends inward of the main body portion, and at least one of the extension portions extends outward of the main body portion.
In one embodiment, the magnetic circuit assembly comprises a yoke, an inner magnetic structure and an outer magnetic structure, wherein the inner magnetic structure and the outer magnetic structure are respectively arranged on the yoke, the inner magnetic structure is positioned on the inner side of the voice coil, and the outer magnetic structure is positioned on the outer side of the voice coil; the magnetic pole direction of the inner magnetic structure is opposite to the magnetic pole direction of the outer magnetic structure.
In an embodiment, the extension portion has a U-shape, a T-shape, or a C-shape.
In an embodiment, the width of the primary magnetic path gap and the width of the secondary magnetic path gap are each greater than or equal to 0.08mm.
In an embodiment, still include the basin frame and install in the vibrating diaphragm subassembly of basin frame, the magnetic circuit subassembly with the basin frame is connected, the voice coil loudspeaker voice coil with the vibrating diaphragm subassembly is connected, main part portion with extension all with vibrating diaphragm subassembly adhesive connection.
In one embodiment, the voice coil is shaped as a center symmetrical pattern.
The utility model has the beneficial effects that: the miniature loudspeaker provided by the utility model has the characteristic of good acoustic performance, the extension part connected with the main part of the voice coil is arranged on the main part of the voice coil, so that the whole length of the voice coil is increased, and the branch magnetic circuit gap communicated with the main magnetic circuit gap of the magnetic circuit assembly is arranged, so that the main part is positioned in the main magnetic circuit gap, the extension part of the voice coil is positioned in the branch magnetic circuit gap, the effective length of the voice coil in the magnetic circuit gap is increased, the magnetic force utilization rate of the magnetic circuit assembly is improved, and the acoustic performance of the miniature loudspeaker is improved.
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 schematic structural diagram of a micro-speaker according to a first embodiment of the present utility model.
Description of the reference numerals:
1. a magnetic circuit assembly; 11. a yoke; 12. an inner magnetic structure; 13. an external magnetic structure; 2. a voice coil; 21. a main body portion; 22. an extension.
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.
Referring to FIG. 1, a micro-speaker includes
A voice coil 2 including a main body 21 and an extension 22 connected to the main body 21;
the magnetic circuit assembly 1 comprises a main magnetic circuit gap and a branch magnetic circuit gap communicated with the main magnetic circuit gap, the main body part 21 of the voice coil 2 is positioned in the main magnetic circuit gap, and the extension part 22 is positioned in the branch magnetic circuit gap.
As can be seen from the above description, the present utility model has the advantages that the extension 22 connected to the main body 21 of the voice coil 2 is provided on the main body 21 of the voice coil 2, so that the overall length of the voice coil 2 is increased, and the secondary magnetic path gap connected to the primary magnetic path gap of the magnetic circuit assembly 1 is provided, so that the main body 21 is located in the primary magnetic path gap, and the extension 22 of the voice coil 2 is located in the secondary magnetic path gap, so that the effective length of the voice coil 2 in the magnetic path gap is increased, the magnetic force utilization rate of the magnetic circuit assembly 1 is improved, and the acoustic performance of the micro-speaker is improved.
Further, the number of the extending portions 22 is plural, and the number of the magnetic path gaps is equal to the number of the extending portions 22 and corresponds to one.
As can be seen from the above description, the plurality of extension portions 22 are provided on the main body portion 21, which facilitates further increase in the length of the voice coil 2 and further improvement in acoustic performance.
Further, the extension 22 extends to the outside or inside of the main body 21.
Further, at least one of the extending portions 22 extends inward of the main body portion 21, and at least one of the extending portions 22 extends outward of the main body portion 21.
As can be seen from the above description, the extending direction of the extending portion 22 can be set according to practical application requirements, which enriches the diversity of the structure.
Further, the magnetic circuit assembly 1 includes a yoke 11, and an inner magnetic structure 12 and an outer magnetic structure 13 respectively disposed on the yoke 11, wherein the inner magnetic structure 12 is located at the inner side of the voice coil 2, and the outer magnetic structure 13 is located at the outer side of the voice coil 2; the magnetic pole direction of the inner magnetic structure 12 is opposite to the magnetic pole direction of the outer magnetic structure 13.
As is apparent from the above description, the yoke 11 is used for mounting the inner magnetic structure 12 and the outer magnetic structure 13, and the specific structures of the inner magnetic structure 12 and the outer magnetic structure 13 may be specifically set according to practical application requirements.
Further, the extension 22 has a U-shape, a T-shape, or a C-shape.
As can be seen from the above description, the shape of the extension 22 can be set according to practical application requirements, which enriches the structural style.
Further, the width of the main magnetic path gap and the width of the branch magnetic path gap are both greater than or equal to 0.08mm.
From the above description, it is known that the width of the main magnetic path gap and the width of the secondary magnetic path gap can be set according to practical application requirements.
Further, the loudspeaker voice coil assembly also comprises a basin frame and a vibrating diaphragm assembly arranged on the basin frame, wherein the magnetic circuit assembly 1 is connected with the basin frame, the voice coil 2 is connected with the vibrating diaphragm assembly, and the main body part 21 and the extension part 22 are connected with the vibrating diaphragm assembly in an adhesive mode.
As can be seen from the above description, the main body 21 and the extension 22 are bonded to the diaphragm assembly, so that stability of the voice coil 2 during vibration is ensured, and risk of the voice coil 2 falling off from the diaphragm assembly is reduced.
Further, the shape of the voice coil 2 is a center symmetrical pattern.
As can be seen from the above description, the shape of the voice coil 2 is set to be a central symmetrical pattern, so that the voice coil 2 is more stable in the vibration process, which is beneficial to improving the acoustic performance.
Example 1
Referring to fig. 1, a first embodiment of the present utility model is as follows: the miniature loudspeaker comprises a basin frame (not shown), a diaphragm assembly (not shown), a voice coil 2 and a magnetic circuit assembly 1, wherein the magnetic circuit assembly 1 and the diaphragm assembly are respectively connected with the basin frame, the voice coil 2 is connected with the diaphragm assembly, the voice coil 2 comprises a main body part 21 and an extension part 22 connected with the main body part 21, and in detail, the whole shape of the voice coil 2 is a closed annular structure; the magnetic circuit assembly 1 comprises a main magnetic circuit gap and a branch magnetic circuit gap communicated with the main magnetic circuit gap, the main body part 21 of the voice coil 2 is positioned in the main magnetic circuit gap, and the extension part 22 is positioned in the branch magnetic circuit gap; in this embodiment, the main body 21 and the extension 22 are both adhesively connected to the diaphragm assembly; in detail, the vibrating diaphragm assembly comprises a sound membrane and a middle paste connected with the sound membrane, the sound membrane is connected with the basin frame, and the voice coil 2 is adhered to the middle paste; it should be noted that, in the speaker field, the conventional structure of the diaphragm assembly and the frame belongs to a known range in the art, and therefore, detailed descriptions of the specific structures of the frame and the diaphragm assembly are not repeated in this embodiment.
Optionally, the number of the extending portions 22 on the main body portion 21 may be set according to practical application requirements, and in this embodiment, the number of the extending portions 22 is multiple, and the number of the magnetic circuit gaps is equal to and corresponds to the number of the extending portions 22 one by one, so that further increase of the length of the voice coil 2 is facilitated, further improvement of acoustic performance is facilitated, and in detail, the extending portions 22 all extend toward the inner side of the main body portion 21.
In other embodiments, the extending portion 22 may further extend to the outside of the main body portion 21, or in the case that the number of extending portions 22 is plural, at least one extending portion 22 extends to the inside of the main body portion 21, at least one extending portion 22 extends to the outside of the main body portion 21, and specifically, the extending direction of the extending portion 22 may be set according to the actual application requirement, so as to enrich the diversity of the structure.
Preferably, the magnetic circuit assembly 1 includes a yoke 11, and an inner magnetic structure 12 and an outer magnetic structure 13 respectively disposed on the yoke 11, the inner magnetic structure 12 is located on the inner side of the voice coil 2, and the outer magnetic structure 13 is located on the outer side of the voice coil 2; the magnetic pole direction of the inner magnetic structure 12 is opposite to the magnetic pole direction of the outer magnetic structure 13, specifically, the inner magnetic structure 12 includes inner magnetic steel and an inner washer mounted on the inner magnetic steel, the inner magnetic steel is mounted on the yoke 11, and the inner washer is located at the inner side of the voice coil 2; the outer magnetic structure 13 comprises outer magnetic steel and an outer washer mounted on the outer magnetic steel, the outer magnetic steel is connected with the yoke 11, and the outer washer is located on the outer side of the voice coil 2.
Alternatively, the shape of the extension portion 22 is U-shaped, T-shaped or C-shaped, and the shape of the extension portion 22 may be set according to practical application requirements, thereby enriching structural styles; in this embodiment, the extending portion 22 has a U-shape; correspondingly, the shape of the inner magnetic structure 12 and the shape of the outer magnetic structure 13 are rectangular; the structural shapes of the inner magnetic structure 12 and the outer magnetic structure 13 may be specifically set according to the shape of the extension 22, which is not described herein in detail.
Preferably, the width of the main magnetic path gap and the width of the secondary magnetic path gap are both greater than or equal to 0.08mm, and the width of the main magnetic path gap and the width of the secondary magnetic path gap can be specifically set according to practical application requirements.
In order to reduce the risk of polarization of the voice coil 2, the shape of the voice coil 2 can be set to be a central symmetrical pattern, so that the voice coil 2 is more stable in the vibration process, and the improvement of the acoustic performance is facilitated.
In this embodiment, the inner magnetic structures 12 and the outer magnetic structures 13 are arranged on the yoke 11 in parallel and spaced apart, wherein a main magnetic path gap is formed between two outer magnetic structures 13 and the inner magnetic structure 12 at the outermost side, and a magnetic path gap is formed between the other outer magnetic structures 13 and the inner magnetic structure 12; the arrangement of the outer magnetic structure 13 and the inner magnetic structure 12 on the yoke 11 may be specifically set according to practical application requirements, and will be described in detail herein.
In summary, the micro-speaker provided by the utility model has the characteristic of good acoustic performance, the extension part connected with the main body part of the voice coil is arranged on the main body part of the voice coil, so that the whole length of the voice coil is increased, and the branch magnetic circuit gap communicated with the main magnetic circuit gap of the magnetic circuit assembly is arranged, so that the main body part is positioned in the main magnetic circuit gap, and the extension part of the voice coil is positioned in the branch magnetic circuit gap, thereby increasing the effective length of the voice coil in the magnetic circuit gap, improving the magnetic force utilization rate of the magnetic circuit assembly, and being beneficial to improving the acoustic performance of the micro-speaker.
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 (9)
1. A micro-speaker, comprising
A voice coil including a main body portion and an extension portion connected to the main body portion;
the magnetic circuit assembly comprises a main magnetic circuit gap and a branch magnetic circuit gap communicated with the main magnetic circuit gap, the main body part of the voice coil is positioned in the main magnetic circuit gap, and the extension part is positioned in the branch magnetic circuit gap.
2. The micro-speaker of claim 1, wherein the number of the extension parts is plural, and the number of the branched magnetic circuit gaps is equal to the number of the extension parts and corresponds to one.
3. A micro-speaker according to claim 1 or 2, wherein the extension portion extends to the outside or inside of the main body portion.
4. The micro-speaker of claim 2, wherein at least one of the extension portions extends inward of the main body portion and at least one of the extension portions extends outward of the main body portion.
5. The micro-speaker of claim 1, wherein the magnetic circuit assembly comprises a yoke, and an inner magnetic structure and an outer magnetic structure respectively provided on the yoke, the inner magnetic structure being located inside the voice coil, the outer magnetic structure being located outside the voice coil; the magnetic pole direction of the inner magnetic structure is opposite to the magnetic pole direction of the outer magnetic structure.
6. The micro-speaker of claim 1, wherein the extension has a U-shape, a T-shape, or a C-shape.
7. The micro-speaker of claim 1, wherein the width of the primary magnetic path gap and the width of the secondary magnetic path gap are each greater than or equal to 0.08mm.
8. The miniature loudspeaker of claim 1, further comprising a frame and a diaphragm assembly mounted to said frame, said magnetic circuit assembly being connected to said frame, said voice coil being connected to said diaphragm assembly, said main body portion and said extension portion being adhesively connected to said diaphragm assembly.
9. The micro-speaker of claim 1, wherein the voice coil is shaped as a center symmetrical pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320134105.0U CN219536289U (en) | 2023-01-11 | 2023-01-11 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320134105.0U CN219536289U (en) | 2023-01-11 | 2023-01-11 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219536289U true CN219536289U (en) | 2023-08-15 |
Family
ID=87645153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320134105.0U Active CN219536289U (en) | 2023-01-11 | 2023-01-11 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219536289U (en) |
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2023
- 2023-01-11 CN CN202320134105.0U patent/CN219536289U/en active Active
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