CN223080127U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN223080127U CN223080127U CN202421661600.8U CN202421661600U CN223080127U CN 223080127 U CN223080127 U CN 223080127U CN 202421661600 U CN202421661600 U CN 202421661600U CN 223080127 U CN223080127 U CN 223080127U
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Abstract
本实用新型公开了一种微型扬声器，包括盆架、磁路组件、振膜组件、内音圈和外音圈，磁路组件包括轭铁和由内向外依次设于轭铁上的中心磁结构、环状磁结构及边磁结构，中心磁结构与环状磁结构之间形成内圈磁间隙，环状磁结构与边磁结构之间形成外圈磁间隙，中心磁结构包括由下至上依次堆叠相连的下中心磁钢、中心华司及上中心磁钢，下中心磁钢的磁极极性与上中心磁钢磁极极性相反；振膜组件包括由内向外依次相连的内音膜、环形骨架和外音膜，内音膜连接上中心磁钢，外音膜连接盆架；内音圈连接环形骨架且对应于内圈磁间隙设置；外音圈连接环形骨架且对应于外圈磁间隙设置。本微型扬声器BL值大，声学性能表现佳。
The utility model discloses a miniature loudspeaker, comprising a basin frame, a magnetic circuit assembly, a diaphragm assembly, an inner voice coil and an outer voice coil, wherein the magnetic circuit assembly comprises a yoke and a central magnetic structure, an annular magnetic structure and a side magnetic structure arranged on the yoke from the inside to the outside in sequence, an inner magnetic gap is formed between the central magnetic structure and the annular magnetic structure, an outer magnetic gap is formed between the annular magnetic structure and the side magnetic structure, the central magnetic structure comprises a lower central magnetic steel, a central washer and an upper central magnetic steel stacked and connected in sequence from bottom to top, the magnetic pole polarity of the lower central magnetic steel is opposite to the magnetic pole polarity of the upper central magnetic steel; the diaphragm assembly comprises an inner sound membrane, an annular frame and an outer sound membrane connected in sequence from inside to outside, the inner sound membrane is connected to the upper central magnetic steel, and the outer sound membrane is connected to the basin frame; the inner voice coil is connected to the annular frame and is arranged corresponding to the inner magnetic gap; the outer voice coil is connected to the annular frame and is arranged corresponding to the outer magnetic gap. The miniature loudspeaker has a large BL value and excellent acoustic performance.
Description
Technical Field
The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker.
Background
Along with the rapid development of portable electronic devices such as mobile phones, notebook computers and hearing aids, the requirements of people on miniature electroacoustic devices applied to the portable electronic devices are higher and higher, along with the development of society, the thickness of a miniature loudspeaker is smaller and smaller, and the corresponding performance of the miniature loudspeaker is attenuated to a certain extent, so that the consumer experience is affected.
Disclosure of utility model
The utility model solves the technical problem of providing a high-performance micro-speaker.
In order to solve the technical problems, the technical scheme adopted by the utility model is that the miniature loudspeaker comprises:
a basin stand;
The magnetic circuit assembly comprises a yoke, and a central magnetic structure, an annular magnetic structure and an edge magnetic structure which are sequentially arranged on the yoke from inside to outside, wherein an inner ring magnetic gap is formed between the central magnetic structure and the annular magnetic structure, an outer ring magnetic gap is formed between the annular magnetic structure and the edge magnetic structure, the central magnetic structure comprises a lower central magnetic steel, a central washer and an upper central magnetic steel which are sequentially stacked and connected from bottom to top, and the magnetic pole polarity of the lower central magnetic steel is opposite to that of the upper central magnetic steel;
The vibrating diaphragm assembly comprises an inner sound membrane, an annular framework and an outer sound membrane which are sequentially connected from inside to outside, wherein the inner sound membrane is connected with the upper center magnetic steel, and the outer sound membrane is connected with the basin frame;
The inner voice coil is connected with the annular framework and is arranged corresponding to the inner ring magnetic gap;
and the outer voice coil is connected with the annular framework and is arranged corresponding to the outer ring magnetic gap.
In an embodiment, the cross section of the upper central magnetic steel is in a convex shape, the upper central magnetic steel comprises an upper magnetic steel and a lower magnetic steel which are stacked up and down and connected, and the lower magnetic steel is located below the upper magnetic steel and connected with the central washer.
In an embodiment, the inner sound membrane comprises an inner fixing part, an inner folded ring part and an outer fixing part which are sequentially connected from inside to outside, wherein the inner fixing part is in a cap shape, and the inner fixing part is respectively connected and fixed with the top surface of the lower magnetic steel, the peripheral wall of the upper magnetic steel and the top surface of the upper magnetic steel.
In an embodiment, the annular skeleton includes from inside to outside first ring frame, second ring frame and the third ring frame that link to each other in proper order, the top surface of first ring frame is less than the top surface setting of second ring frame, the top surface of second ring frame is less than the top surface setting of third ring frame, the top surface of third ring frame is connected the outer sound membrane, the bottom surface of third ring frame is connected the outer voice coil, the top surface of first ring frame is connected the outer fixed part, the inner edge of the top surface of second ring frame is connected the outer fixed part, first ring frame with the transition zone of second ring frame is connected the outer fixed part, the bottom surface of first ring frame is connected the inner voice coil.
In an embodiment, the annular skeleton is an integrally formed integral structure, and the annular skeleton and the inner sound membrane are an integrally formed integral structure by insert injection molding.
In one embodiment, the upper magnetic steel and the lower magnetic steel are integrally formed into an integral structure, or the upper magnetic steel and the lower magnetic steel are connected in an adhesive manner.
In one embodiment, the top edge of the lower magnetic steel is provided with an avoidance slope.
In an embodiment, the annular magnetic structure comprises annular magnetic steel and an annular washer arranged on the top surface of the annular magnetic steel.
In an embodiment, the annular magnetic steel is provided with a plurality of dividing grooves, and the dividing grooves divide the annular magnetic steel into a plurality of blocks.
In an embodiment, the edge magnetic structure comprises edge magnetic steel and Bian Huasi arranged on the top surface of the edge magnetic steel, and the Bian Huasi is connected with the basin frame.
The miniature loudspeaker has the beneficial effects that the miniature loudspeaker is novel in structure, the BL value of the miniature loudspeaker is effectively enhanced by the arrangement of the upper central magnetic steel with the polarity opposite to that of the lower central magnetic steel, and the BL value of the miniature loudspeaker is also enhanced by the design of the inner voice coil and the outer voice coil, so that the overall performance of the miniature loudspeaker is improved, and the miniature loudspeaker has better acoustic performance.
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;
Fig. 2 is a cross-sectional view of a micro speaker according to a first embodiment of the present utility model;
Fig. 3 is a schematic structural diagram of a magnetic circuit assembly in a micro-speaker according to a first embodiment of the present utility model.
Reference numerals illustrate:
1. A basin stand;
2. magnetic circuit assembly, 21, yoke iron, 22, central magnetic structure, 221, lower central magnetic steel, 222, central washer, 223, upper central magnetic steel, 2231, upper magnetic steel, 2232, lower magnetic steel, 2233, avoiding inclined plane, 23, annular magnetic structure, 24, side magnetic structure;
3. The vibrating diaphragm assembly comprises a vibrating diaphragm assembly body, an inner sound membrane, a 311, an inner fixing part, a 312, an inner folded ring part, a 313, an outer fixing part, a 32, an annular framework, a 321, a first annular frame, a 322, a second annular frame, a 323, a third annular frame, a 33 and an outer sound membrane;
4. an inner voice coil;
5. An outer 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 correspondingly changed.
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 application, 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, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Referring to fig. 1 to 3, in an embodiment of the utility model, a micro speaker includes a frame 1, a magnetic circuit assembly 2, a diaphragm assembly 3, an inner voice coil 4 and an outer voice coil 5, wherein the magnetic circuit assembly 2 includes a yoke 21, and a central magnetic structure 22, an annular magnetic structure 23 and a side magnetic structure 24 sequentially disposed on the yoke 21 from inside to outside, an inner magnetic gap is formed between the central magnetic structure 22 and the annular magnetic structure 23, an outer magnetic gap is formed between the annular magnetic structure 23 and the side magnetic structure 24, the central magnetic structure 22 includes a lower central magnetic steel 221, a central washer 222 and an upper central magnetic steel 223 sequentially stacked and connected from bottom to top, the bottom surface of the lower central magnetic steel 221 is connected with the yoke 21, the magnetic pole polarity of the lower central magnetic steel 221 is opposite to that of the upper central magnetic steel 223, that is, when the bottom of the lower central magnetic steel 221 is an S pole, the bottom of the upper central magnetic steel 221 is an N pole, the bottom of the upper central magnetic steel 223 is an annular magnetic steel 3 is connected with the inner voice coil frame 32, the annular magnetic steel 3 is connected with the outer voice coil frame 32, and the annular magnetic steel 3 is sequentially connected with the outer voice coil frame 32, and the voice coil is sequentially disposed on the frame 32.
The inner sound membrane 31 includes an inner fixing portion 311, an inner folded ring portion 312, and an outer fixing portion 313, which are sequentially connected from inside to outside, in this embodiment, the inner folded ring portion 312 protrudes toward a direction away from the yoke 21, so as to fully utilize an occupied space of the micro speaker, preferably, a cross section of the upper center magnetic steel 223 is in a convex shape, specifically, the upper center magnetic steel 223 includes an upper magnetic steel 2231 and a lower magnetic steel 2232 that are stacked up and down and connected, and the lower magnetic steel 2232 is located below the upper magnetic steel 2231 and connected with the center washer 222.
In order to improve the connection stability between the inner sound membrane 31 and the central magnetic structure 22, optionally, the inner fixing portion 311 is in a cap shape, and the inner fixing portion 311 is respectively connected and fixed with the top surface of the lower magnetic steel 2232, the peripheral wall of the upper magnetic steel 2231, and the top surface of the upper magnetic steel 2231, and the specific connection manner may be adhesive connection, in other words, the inner fixing portion 311 is covered on the upper central magnetic steel 223. In the actual product, the inner fixing portion 311 may be annular, and the inner fixing portion 311 may be fixedly connected only to the peripheral wall of the upper magnetic steel 2231 and/or the top surface of the lower magnetic steel 2232.
The upper magnetic steel 2231 and the lower magnetic steel 2232 are integrally formed into an integral structure, or the upper magnetic steel 2231 and the lower magnetic steel 2232 are connected by gluing.
In order to avoid the interference of the inner sound film 31 with the lower magnetic steel 2232 during the vibration process, it is preferable that the top edge of the lower magnetic steel 2232 is provided with an avoidance slope 2233, so that the total volume of the upper magnetic steel 2231 can be increased to the greatest extent, and the BL value of the micro-speaker can be increased to a greater extent.
In this embodiment, the annular frame 32 includes a first annular frame 321, a second annular frame 322 and a third annular frame 323 that are sequentially connected from inside to outside, the top surface of the first annular frame 321 is lower than the top surface of the second annular frame 322, the top surface of the second annular frame 322 is lower than the top surface of the third annular frame 323, the bottom surface of the third annular frame 323 is higher than the bottom surface of the second annular frame 322, the bottom surface of the second annular frame 322 is higher than the bottom surface of the first annular frame 321, the top surface of the third annular frame 323 is connected with the outer voice coil 33, the bottom surface of the third annular frame 323 is connected with the outer voice coil 5, the bottom surface of the first annular frame 321 is connected with the inner voice coil 4, the top surface of the first annular frame 321 is connected with the outer fixing portion 313, the inner edge of the top surface of the second annular frame 322 is connected with the outer fixing portion 313, the bottom surface of the first annular frame 321 is higher than the bottom surface of the second annular frame 322, the bottom surface of the second annular frame 322 is connected with the transition region, thus the inner voice coil 31 can be further improved in the overall magnetic diaphragm structure, and the magnetic diaphragm assembly can further improve the performance of the inner voice coil assembly 3.
For the convenience of the processing and manufacturing of the diaphragm assembly 3, the annular framework 32 is of an integrated structure formed by integrally processing, and the annular framework 32 and the inner sound membrane 31 are of an integrated structure formed by insert injection molding.
The annular magnetic structure 23 comprises annular magnetic steel and an annular washer arranged on the top surface of the annular magnetic steel. In some embodiments, the annular magnetic steel may be a continuous and complete annular frame structure, and in a specific product, a plurality of dividing grooves may be formed in the annular magnetic steel, where the dividing grooves divide the annular magnetic steel into a plurality of blocks, that is, the annular magnetic steel may be surrounded by a plurality of small magnetic steels.
The edge magnetic structure 24 comprises edge magnetic steel and Bian Huasi arranged on the top surface of the edge magnetic steel, the Bian Huasi is connected with the basin frame 1, and the periphery of the annular magnetic structure 23 is correspondingly provided with the edge magnetic structure 24 respectively.
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 (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421661600.8U CN223080127U (en) | 2024-07-12 | 2024-07-12 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421661600.8U CN223080127U (en) | 2024-07-12 | 2024-07-12 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223080127U true CN223080127U (en) | 2025-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421661600.8U Active CN223080127U (en) | 2024-07-12 | 2024-07-12 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223080127U (en) |
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- 2024-07-12 CN CN202421661600.8U patent/CN223080127U/en active Active
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