CN220422033U - Micro-speaker - Google Patents
Micro-speaker Download PDFInfo
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- CN220422033U CN220422033U CN202321687428.9U CN202321687428U CN220422033U CN 220422033 U CN220422033 U CN 220422033U CN 202321687428 U CN202321687428 U CN 202321687428U CN 220422033 U CN220422033 U CN 220422033U
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- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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Abstract
The utility model discloses a micro-speaker, comprising: the vibrating diaphragm assembly, the working voice coil and the auxiliary voice coil, wherein the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly; an air flow channel is formed between a part of the top surface area of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil. The miniature loudspeaker has a simple and novel structure, the inner cavity of the working voice coil can exchange air flow with the outer space through the opening at the lower part, and the air flow channel at the upper part can exchange air flow with the outer space, so that the smooth degree of the air flow exchange between the inner cavity of the working voice coil and the outer space is effectively improved, and the high-frequency sensitivity of the miniature loudspeaker is improved.
Description
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.
Part miniature speaker can add auxiliary voice coil loudspeaker (miniature speaker during operation, the work voice coil loudspeaker voice coil circular telegram, auxiliary voice coil loudspeaker voice coil is not circular telegram) between work voice coil loudspeaker voice coil and vibrating diaphragm subassembly, adjusts the position of work voice coil loudspeaker voice coil at the magnetic gap through the height of adjustment auxiliary voice coil loudspeaker voice coil to make miniature loudspeaker's performance further promote.
The outline size of the working voice coil is approximately the same as that of the auxiliary voice coil, the connecting areas of the working voice coil and the auxiliary voice coil form a closed annular joint surface, and the connecting area of the working voice coil and the vibrating diaphragm assembly is also an annular closed area, so that an opening can be formed in the bottom of the inner cavity of the working voice coil to conduct air flow exchange with the outer space of the working voice coil, the high-frequency sensitivity of the micro-speaker is affected to a certain extent, the auxiliary voice coil is additionally arranged, the height of the inner cavity of the working voice coil is further increased, the whole volume of the inner cavity of the working voice coil is increased, the air flow exchange inside the micro-speaker is more difficult, and the high-frequency sensitivity of the micro-speaker is further deteriorated.
Disclosure of Invention
The technical problems solved by the utility model are as follows: a micro-speaker with high frequency sensitivity is provided.
In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker, comprising:
a diaphragm assembly;
working a voice coil;
the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly;
an air flow channel is formed between a part of the top surface area of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil.
In an embodiment, the voice coil motor further comprises a magnetic circuit assembly, wherein the magnetic circuit assembly is provided with a magnetic gap for the working voice coil to move, and an avoidance groove for avoiding the auxiliary voice coil is formed in the top of the magnetic circuit assembly.
In an embodiment, the combined voice coil formed by connecting the auxiliary voice coil and the working voice coil is in an axisymmetric structure.
In an embodiment, the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the long side dimension of the auxiliary voice coil is smaller than the long side dimension of the working voice coil, and the air flow channel is positioned above the short side of the working voice coil; or the short side dimension of the auxiliary voice coil is smaller than that of the working voice coil, and the air flow channel is positioned above the long side of the working voice coil.
In one embodiment, the air flow channel is located above a corner of the working voice coil.
In an embodiment, the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the corners of the auxiliary voice coil and the corners of the working voice coil are respectively round corners, and the diameters of the round corners of the auxiliary voice coil are different from those of the round corners of the working voice coil.
In an embodiment, the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, and the corners of the auxiliary voice coil are protruded outwards to form a concave structure.
In an embodiment, the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the air flow channel is positioned above the short side of the working voice coil, and a part of the area of the short side of the auxiliary voice coil protrudes inwards to form a concave structure; and/or part of the area of the short side of the auxiliary voice coil protrudes outwards to form a concave structure.
In an embodiment, the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the air flow channel is positioned above the long side of the working voice coil, and a part of the area of the long side of the auxiliary voice coil protrudes inwards to form a concave structure; and/or the partial area of the long side of the auxiliary voice coil protrudes outwards to form a concave structure.
In an embodiment, the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, a part of the long side area of the working voice coil protrudes inwards to form a concave structure, and the air flow passage is positioned above the long side of the working voice coil; and/or the partial area of the short side of the working voice coil protrudes inwards to form a concave structure, and the air flow channel is positioned above the short side of the working voice coil.
The utility model has the beneficial effects that: the miniature loudspeaker has a simple and novel structure, the inner cavity of the working voice coil can exchange air flow with the outer space through the opening at the lower part, and the air flow channel at the upper part can exchange air flow with the outer space, so that the smooth degree of the air flow exchange between the inner cavity of the working voice coil and the outer space is effectively improved, and the high-frequency sensitivity 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 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 an internal structure of a micro-speaker according to a first embodiment of the present utility model;
fig. 3 is a schematic structural diagram of an internal structure of a micro-speaker according to a second embodiment of the present utility model;
fig. 4 is a schematic structural diagram of an internal structure of a micro-speaker according to a third embodiment of the present utility model;
fig. 5 is a schematic structural diagram of an internal structure of a micro-speaker according to a fourth embodiment of the present utility model;
fig. 6 is a schematic structural diagram of an internal structure of a micro-speaker according to another embodiment of the present utility model;
fig. 7 is a schematic structural diagram of an internal structure of a micro-speaker according to a fifth embodiment of the present utility model.
Reference numerals illustrate:
1. a basin stand;
2. a magnetic circuit assembly; 21. a magnetic gap; 22. an avoidance groove;
3. a diaphragm assembly;
4. working a voice coil;
5. an auxiliary voice coil;
6. an air flow passage;
7. a concave structure.
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 and a combined voice coil connected to the vibrating diaphragm assembly 3, the combined voice coil comprises a working voice coil 4 and an auxiliary voice coil 5, the bottom of the auxiliary voice coil 5 is connected with the working voice coil 4, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly 3; an air flow channel 6 is formed between a part of the top surface area of the working voice coil 4 and the vibrating diaphragm assembly 3, and the air flow channel 6 is communicated with the inner cavity of the working voice coil 4 and the outer space of the working voice coil 4.
The working voice coil 4 and the auxiliary voice coil 5 may be connected by glue, by double sided tape, by self-adhesive layer of the enameled wire itself, or by other means. The diaphragm assembly 3 and the auxiliary voice coil 5 may be connected by glue, by double sided adhesive tape, or by other means.
In order to avoid the micro-speaker during operation, the auxiliary voice coil 5 collides with the magnetic circuit assembly 2, and optionally, the top of the magnetic circuit assembly 2 is provided with an avoidance groove 22 for avoiding the auxiliary voice coil 5. Specifically, the magnetic circuit assembly 2 includes a yoke, a central magnetic structure and a side magnetic structure, the central magnetic structure and the side magnetic structure are respectively disposed on the yoke, and the magnetic gap 21 is formed between the central magnetic structure and the side magnetic structure; the central magnetic structure comprises central magnetic steel and a central washer, the central magnetic steel is respectively connected with the central washer and the yoke, the side magnetic structure comprises side magnetic steel and Bian Huasi, and the side magnetic steel is respectively connected with the Bian Huasi and the yoke.
In this embodiment, the avoidance groove 22 is disposed on a side of the central magnetic structure away from the yoke, that is, the avoidance groove 22 is disposed on the top of the central magnetic structure. Specifically, the avoiding groove 22 is provided on the top surface of the central washer. Depending on the size of the auxiliary voice coil 5, the avoiding groove 22 may be formed on the side magnetic structure in other embodiments.
In order to balance the stress of the vibration assembly and thereby improve the polarization of the working voice coil 4, it is preferable that the combined voice coil formed by connecting the auxiliary voice coil 5 and the working voice coil 4 has an axisymmetric structure.
In this embodiment, the auxiliary voice coil 5 and the working voice coil 4 are respectively rectangular, and the long side dimension of the auxiliary voice coil 5 is smaller than the long side dimension of the working voice coil 4, so that the short side of the auxiliary voice coil 5 is located inside the working voice coil 4 when the combined voice coil is viewed from above, and the air flow path 6 is located above the short side of the working voice coil 4.
In other embodiments, it is also possible that the minor dimension of the auxiliary voice coil 5 is smaller than the minor dimension of the working voice coil 4, in which case the air flow channel 6 is located above the long side of the working voice coil 4.
The wall thickness of the auxiliary voice coil 5 is smaller than or equal to the wall thickness of the working voice coil 4, and in order to control the weight of the auxiliary voice coil 5, it is preferable that the wall thickness of the auxiliary voice coil 5 is smaller than the wall thickness of the working voice coil 4. Of course, in some embodiments, it is also possible that the wall thickness of the auxiliary voice coil 5 is greater than the wall thickness of the working voice coil 4.
The auxiliary voice coil 5 is formed by winding a first wire, the working voice coil 4 is formed by winding a second wire, and the material density of the first wire is smaller than or equal to that of the second wire. In order to control the weight of the auxiliary voice coil 5 and reduce the overall weight of the vibration assembly, it is preferable that the material density of the first wire is smaller than that of the second wire. The first wire may be a copper clad aluminum wire, an aluminum wire, or the like.
The cross-sectional shape of the first wire may be the same as or different from the cross-sectional shape of the second wire, and the cross-sectional shape of the first wire may be circular, elliptical, polygonal or other special-shaped, and similarly, the cross-section of the second wire may be vice versa; the cross-sectional dimension of the first wire may be the same as or different from the cross-sectional dimension of the second wire.
In order to improve the bonding strength between the auxiliary voice coil 5 and the working voice coil 4, optionally, a jogged structure is formed at the bonding surface of the auxiliary voice coil 5 and the working voice coil 4. Therefore, the fixing area between the auxiliary voice coil 5 and the working voice coil 4 can be increased, the fixing effect is enhanced, for example, the joint surface of the working voice coil 4 and the auxiliary voice coil 5 can be of a groove embedded structure, and the two structures are mutually matched and fixed into a whole.
Example two
Referring to fig. 3, 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: an air flow passage 6 is located above the corner of the working voice coil 4.
In this embodiment, the auxiliary voice coil 5 and the working voice coil 4 are respectively rectangular frame-shaped, the corners of the auxiliary voice coil 5 and the corners of the working voice coil 4 are respectively round corners, and the diameter of the round corners of the auxiliary voice coil 5 is different from the diameter of the round corners of the working voice coil 4. In the micro-speaker of the present embodiment, when the combined voice coil is viewed from above, a gap is formed between the corner of the auxiliary voice coil 5 and the corner of the working voice coil 4.
Example III
Referring to fig. 4, the third embodiment of the present utility model is a parallel technical solution of the second embodiment, and is different from the second embodiment in that: the auxiliary voice coil 5 and the working voice coil 4 are respectively rectangular frame-shaped, and the corners of the auxiliary voice coil 5 are protruded outwards to form a concave structure 7. Therefore, the air flow channel 6 can be formed, and the combination area of the auxiliary voice coil 5 and the vibrating diaphragm assembly is increased, so that the structural stability of the vibrating assembly is improved.
Example IV
Referring to fig. 5 and 6, 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: the auxiliary voice coil 5 and the working voice coil 4 are respectively rectangular frame-shaped, the air flow channel 6 is positioned above the short side of the working voice coil 4, in this embodiment, a part of the area of the short side of the auxiliary voice coil 5 protrudes inwards to form a concave structure 7, as shown in fig. 5; of course, as shown in fig. 6, it is also possible that a part of the short side of the auxiliary voice coil 5 protrudes outward to form a concave structure 7.
As a further development, the partial area of the short side of the auxiliary voice coil 5 protrudes outward to form a concave structure 7, and at the same time, the partial area of the short side of the auxiliary voice coil 5 protrudes inward to form a concave structure 7, that is, at this time, a plurality of air flow channels 6 are provided above the short side of the working voice coil 4.
In other embodiments, the auxiliary voice coil 5 and the working voice coil 4 are respectively rectangular frame-shaped, the air flow channel 6 is positioned above the long side of the working voice coil 4, and a part of the long side area of the auxiliary voice coil 5 protrudes inwards to form a concave structure 7; and/or, a part of the long side of the auxiliary voice coil 5 protrudes outwards to form a concave structure 7. This is also possible, and may be specifically selected according to actual needs.
Example five
Referring to fig. 7, 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 auxiliary voice coil 5 and the working voice coil 4 are respectively rectangular frame-shaped, a part of the long side area of the working voice coil 4 protrudes inwards to form a concave structure 7, the air flow channel 6 is positioned above the long side of the working voice coil 4, and specifically, the air flow channel 6 is positioned above the concave structure 7; of course, it is also possible that the partial area of the short side of the working voice coil 4 protrudes inward to form a concave structure 7, and the air flow path 6 is located above the short side of the working voice coil 4, specifically, the air flow path 6 is located above the concave structure 7.
As a further development, the partial area of the long side of the working voice coil 4 protrudes inward to form a first concave structure 7, and at the same time, the partial area of the short side of the working voice coil 4 protrudes inward to form a second concave structure 7, that is, at this time, the air flow passages 6 are respectively provided above the long side and above the short side of the working voice coil 4.
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. Miniature speaker, its characterized in that: comprising
A diaphragm assembly;
working a voice coil;
the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly;
an air flow channel is formed between a part of the top surface of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil;
the auxiliary voice coil and the working voice coil are respectively rectangular, the long side size of the auxiliary voice coil is smaller than that of the working voice coil, and the air flow channel is positioned above the short side of the working voice coil; or the short side dimension of the auxiliary voice coil is smaller than that of the working voice coil, and the air flow channel is positioned above the long side of the working voice coil.
2. A micro-speaker as claimed in claim 1, wherein: the voice coil motor further comprises a magnetic circuit assembly, wherein the magnetic circuit assembly is provided with a magnetic gap for the working voice coil to move, and an avoidance groove for avoiding the auxiliary voice coil is formed in the top of the magnetic circuit assembly.
3. A micro-speaker as claimed in claim 1, wherein: the combined voice coil formed by connecting the auxiliary voice coil and the working voice coil is of an axisymmetric structure.
4. Miniature speaker, its characterized in that: comprising
A diaphragm assembly;
working a voice coil;
the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly;
an air flow channel is formed between a part of the top surface of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil;
the air flow channel is located above a corner of the working voice coil.
5. A micro-speaker as claimed in claim 4, wherein: the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the corners of the auxiliary voice coil and the corners of the working voice coil are respectively round corners, and the diameters of the round corners of the auxiliary voice coil are different from those of the round corners of the working voice coil.
6. A micro-speaker as claimed in claim 4, wherein: the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, and the corners of the auxiliary voice coil protrude outwards to form a concave structure.
7. Miniature speaker, its characterized in that: comprising
A diaphragm assembly;
working a voice coil;
the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly;
an air flow channel is formed between a part of the top surface of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil;
the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the air flow channel is positioned above the short side of the working voice coil, and a part of the area of the short side of the auxiliary voice coil protrudes inwards to form a concave structure; and/or part of the area of the short side of the auxiliary voice coil protrudes outwards to form a concave structure.
8. Miniature speaker, its characterized in that: comprising
A diaphragm assembly;
working a voice coil;
the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly;
an air flow channel is formed between a part of the top surface of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil;
the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, the air flow channel is positioned above the long side of the working voice coil, and part of the area of the long side of the auxiliary voice coil protrudes inwards to form a concave structure; and/or the partial area of the long side of the auxiliary voice coil protrudes outwards to form a concave structure.
9. Miniature speaker, its characterized in that: comprising
A diaphragm assembly;
working a voice coil;
the bottom of the auxiliary voice coil is connected with the working voice coil, and the top of the auxiliary voice coil is connected with the vibrating diaphragm assembly;
an air flow channel is formed between a part of the top surface of the working voice coil and the vibrating diaphragm assembly, and the air flow channel is communicated with the inner cavity of the working voice coil and the outer space of the working voice coil;
the auxiliary voice coil and the working voice coil are respectively rectangular frame-shaped, a part of the long side area of the working voice coil protrudes inwards to form a concave structure, and the air flow passage is positioned above the long side of the working voice coil; and/or the partial area of the short side of the working voice coil protrudes inwards to form a concave structure, and the air flow channel is positioned above the short side of the working voice coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321687428.9U CN220422033U (en) | 2023-06-29 | 2023-06-29 | Micro-speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321687428.9U CN220422033U (en) | 2023-06-29 | 2023-06-29 | Micro-speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220422033U true CN220422033U (en) | 2024-01-30 |
Family
ID=89655550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321687428.9U Active CN220422033U (en) | 2023-06-29 | 2023-06-29 | Micro-speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220422033U (en) |
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2023
- 2023-06-29 CN CN202321687428.9U patent/CN220422033U/en active Active
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