CN222339598U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN222339598U CN222339598U CN202420748443.8U CN202420748443U CN222339598U CN 222339598 U CN222339598 U CN 222339598U CN 202420748443 U CN202420748443 U CN 202420748443U CN 222339598 U CN222339598 U CN 222339598U
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Abstract
The utility model discloses a miniature loudspeaker, which comprises a vibrating diaphragm assembly and a magnetic circuit assembly, wherein the vibrating diaphragm assembly is provided with an inner fixing part, a first folding ring part and an outer fixing part which are sequentially connected from inside to outside, the magnetic circuit assembly comprises additional magnetic steel, a yoke and an edge magnetic structure arranged on the yoke, the edge magnetic structure comprises edge magnetic steel and an annular washer, the annular washer comprises a flat plate part and a vertical plate part which are connected, the vertical plate part is connected with the outer fixing part, the edge magnetic steel is connected with the bottom surface of the flat plate part and the yoke, the first folding ring part protrudes towards the direction far away from the flat plate part, the additional magnetic steel is arranged on the top surface of the flat plate part and corresponds to the first folding ring part, and the polarity of the top of the additional magnetic steel is identical with that of the bottom magnetic pole of the edge magnetic steel. The miniature loudspeaker is novel in structure, the top surface of the annular washer is provided with the additional magnetic steel with the polarity opposite to that of the magnetic poles of the side magnetic steel, so that the magnetic flux of the magnetic circuit assembly is enhanced, the BL value of the miniature loudspeaker is improved, the performance of the miniature loudspeaker is enhanced, and the use experience of consumers can be effectively improved.
Description
Technical Field
The utility model relates to the technical field of electroacoustic converters, in particular to a miniature loudspeaker.
Background
At present, mobile terminals such as mobile phones and tablet computers enrich the life of people, and micro speakers play an indispensable role as audio devices.
With the development of society, electronic devices become thinner and thinner, which requires that the micro-speakers mounted on the electronic devices are thinner and thinner, and the performance of the micro-speakers is lower and lower due to the thinner and thinner thickness, so that the consumption experience is seriously 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:
the vibrating diaphragm assembly is provided with an inner fixing part, a first folding ring part and an outer fixing part which are sequentially connected from inside to outside;
The magnetic circuit assembly comprises additional magnetic steel, a yoke and a side magnetic structure arranged on the yoke, the side magnetic structure comprises side magnetic steel and an annular washer, the annular washer comprises a flat plate part and a vertical plate part which are connected, the vertical plate part is connected with the external fixing part, and the side magnetic steel is connected with the bottom surface of the flat plate part and the yoke;
The first ring-folding part protrudes towards the direction far away from the flat plate part, the additional magnetic steel is arranged on the top surface of the flat plate part and corresponds to the first ring-folding part, and the polarity of the bottom magnetic pole of the additional magnetic steel is the same as that of the bottom magnetic pole of the side magnetic steel.
In an embodiment, a first avoiding structure is arranged at one side, away from the vertical plate, of the top of the additional magnetic steel, and the first avoiding structure is used for avoiding the first ring folding portion.
In an embodiment, the first avoidance structure is an obtuse angle structure, a rounded angle structure, or a stepped structure.
In one embodiment, the additional magnetic steel is in a strip shape.
In an embodiment, the magnetic circuit assembly further comprises a plurality of central magnetic structures arranged on the yoke, the central magnetic structures comprise central magnetic steel and a central washer, the bottom surface of the central magnetic steel is connected with the yoke, the top surface of the central magnetic steel is connected with the central washer, the magnetic circuit assembly further comprises a plurality of voice coils fixedly connected with the vibrating diaphragm assembly, the voice coils are correspondingly arranged with the central magnetic structures, and at least part of areas of magnetic gaps for the voice coils to move are formed between the central magnetic structures and the side magnetic structures.
In an embodiment, the inner fixing part is provided with a window and further comprises a connection auxiliary film and a antimagnetic steel structure, the connection auxiliary film comprises a convex cap and a second folded ring part surrounding the convex cap, the second folded ring part protrudes towards a direction away from the central washer, the inner edge of the second folded ring part is connected with the convex cap, the outer edge of the second folded ring part is connected with the diaphragm assembly, the connection auxiliary film seals the window, the antimagnetic steel structure is arranged on the top surface of the central washer and corresponds to the convex cap, the top of the antimagnetic steel structure is positioned in the convex cap, the top surface of the antimagnetic steel structure is connected with the convex cap, and the polarity of the magnetic poles at the top of the antimagnetic steel structure and the bottom of the central magnetic steel is the same.
In an embodiment, the antimagnetic steel structure comprises a lower magnetic steel and an upper magnetic steel which are connected, wherein the upper magnetic steel is positioned in the convex cap, the lower magnetic steel is positioned below the convex cap, the peripheral wall of the upper magnetic steel is fixedly connected with the inner wall of the convex cap, and the top surface of the upper magnetic steel is fixedly connected with the inner top wall of the convex cap.
In an embodiment, a second avoidance structure is arranged at the edge of the top of the lower magnetic steel, and the second avoidance structure is used for avoiding the second ring-folded portion.
In an embodiment, the inner edge of the second ring-folding portion is connected to the top surface of the lower magnetic steel.
In an embodiment, the number of the central magnetic structures and the number of the voice coils are multiple, and the central magnetic structures and the voice coils are arranged in a one-to-one correspondence.
The miniature loudspeaker has the beneficial effects that the miniature loudspeaker is novel in structure, the top surface of the annular washer is provided with the additional magnetic steel with the polarity opposite to that of the magnetic poles of the side magnetic steel, the magnetic flux of the magnetic circuit assembly is enhanced, the BL value of the miniature loudspeaker is facilitated to be improved, the performance of the miniature loudspeaker is enhanced, and the use experience of consumers can be effectively improved. The first fold ring part of the vibrating diaphragm component is designed to be convex, so that enough space is reserved for arranging additional magnetic steel.
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 an internal structure of a micro-speaker according to a first embodiment of the present utility model.
Reference numerals illustrate:
1. A diaphragm assembly; 11, an inner fixing part, 12, a first folding ring part, 13, an outer fixing part;
2. the magnetic circuit assembly comprises a magnetic circuit assembly, an additional magnetic steel, a 211 first avoiding structure, a 22 yoke, 231 side magnetic steel, 232 annular washer, 2321, a flat plate part, 2322, a vertical plate part and a 24 central magnetic structure;
3. A voice coil;
4. the auxiliary membrane is connected, 41, the convex cap and 42, the second folded ring part;
5. The magnetic steel structure comprises a demagnetizing steel structure, 51, lower magnetic steel, 511, a second avoiding structure and 52, upper magnetic steel.
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, an embodiment of the utility model is a micro speaker, which includes a diaphragm assembly 1, a magnetic circuit assembly 2 and a plurality of voice coils 3, wherein the diaphragm assembly 1 has an inner fixing portion 11, a first collar portion 12 and an outer fixing portion 13 sequentially connected from inside to outside, the voice coils 3 are fixedly connected with the diaphragm assembly 1, specifically, the voice coils 3 are fixedly connected with the inner fixing portion 11, in this embodiment, the diaphragm assembly 1 includes a sound film and a dome disposed on the sound film, and in a specific product, the diaphragm assembly 1 can be accepted without the dome.
The magnetic circuit assembly 2 comprises additional magnetic steel 21, a yoke 22 and a side magnetic structure and a plurality of central magnetic structures 24 which are respectively arranged on the yoke 22, wherein the central magnetic structure 24 comprises central magnetic steel and a central washer, the bottom surface of the central magnetic steel is connected with the yoke 22, the top surface of the central magnetic steel is connected with the central washer, the voice coil 3 is correspondingly arranged with the central magnetic structure 24, at least part of a magnetic gap for the voice coil 3 to move is formed between the central magnetic structure 24 and the side magnetic structure, the side magnetic structure comprises a side magnetic steel 231 and an annular washer 232, the annular washer 232 comprises a flat plate 2321 and a vertical plate 2322 which are connected, the side magnetic steel 231 is connected with the bottom surface of the flat plate 2321 and the yoke 22, and the vertical plate 2322 is connected with the outer fixing part 13.
The first ring-folding portion 12 protrudes in a direction away from the flat plate portion 2321, the additional magnetic steel 21 is disposed on the top surface of the flat plate portion 2321 and is disposed corresponding to the first ring-folding portion 12, preferably, the additional magnetic steel 21 is elongated, and the top of the additional magnetic steel 21 and the bottom of the side magnetic steel 231 have the same polarity, that is, when the top of the additional magnetic steel 21 is the N pole, the bottom of the side magnetic steel 231 is also the N pole, and when the top of the additional magnetic steel 21 is the S pole, the bottom of the side magnetic steel 231 is also the S pole.
The top of additional magnet steel 21 is kept away from one side of riser portion 2322 is equipped with first avoidance structure 211, first avoidance structure 211 is used for dodging first ring portion 12 to avoid vibrating diaphragm assembly 1 to touch during lower vibration additional magnet steel 21. The first avoiding structure 211 is an obtuse angle structure, a rounded angle structure, a step structure, etc.
In this embodiment, the inner fixing portion 11 is provided with a window, the micro speaker further includes a connection auxiliary film 4 and a antimagnetic steel structure 5, the connection auxiliary film 4 includes a convex cap 41 and a second ring-folded portion 42 surrounding the convex cap 41, the second ring-folded portion 42 protrudes in a direction away from the central washer, an inner edge of the second ring-folded portion 42 is connected with the convex cap 41, an outer edge of the second ring-folded portion 42 is connected with the diaphragm assembly 1, the connection auxiliary film 4 seals the window, the antimagnetic steel structure 5 is disposed on a top surface of the central washer and corresponds to the convex cap 41, a top of the antimagnetic steel structure 5 is disposed in the convex cap 41, a top of the antimagnetic steel structure 5 is connected with the convex cap 41, and a top of the antimagnetic steel structure 5 has the same polarity as a bottom of the central magnetic steel, that is, when the top of the antimagnetic steel structure 5 is an N pole, and when the antimagnetic steel structure 5 is an S pole, the top of the antimagnetic steel structure is an S pole.
Preferably, the height of the convex cap 41 is equal to or similar to the convex height of the second ring portion 42, and the convex height of the first ring portion 12 is equal to or similar to the convex height of the second ring portion 42.
In this embodiment, the connection sub-membrane 4 is connected to the dome, and in other embodiments, the connection sub-membrane 4 may be connected to the sound membrane.
Because the first ring folding part 12 adopts the convex structure, the BL value of the micro-speaker can be improved to a greater extent by additionally arranging the anti-magnetic steel structure 5 above the central magnetic steel on the premise of not changing the whole volume of the micro-speaker, and the performance of the micro-speaker is further improved.
The anti-magnetic steel structure 5 comprises a lower magnetic steel 51 and an upper magnetic steel 52 which are connected, the upper magnetic steel 52 is positioned in the convex cap 41, the lower magnetic steel 51 is positioned below the convex cap 41, the peripheral wall of the upper magnetic steel 52 is fixedly connected with the inner wall of the convex cap 41, and the top surface of the upper magnetic steel 52 is fixedly connected with the inner top wall of the convex cap 41. The upper magnetic steel 52 and the lower magnetic steel 51 may be of an integral structure or a split structure, and may be specifically set according to actual needs.
Preferably, the edge at the top of the lower magnetic steel 51 is provided with a second avoiding structure 511, and the second avoiding structure 511 is used for avoiding the second ring-folded portion 42, so as to avoid that the second ring-folded portion 42 touches the lower magnetic steel 51 to generate noise in the deformation process, and the second avoiding structure 511 is an obtuse angle structure, a round angle structure, a step structure and the like.
In order to improve the structural stability of the micro-speaker, optionally, the inner edge of the second ring portion 42 is connected to the top surface of the lower magnetic steel 51.
As a preferred embodiment, the number of the central magnetic structures 24 and the number of the voice coils 3 are plural, and the central magnetic structures 24 are arranged in a one-to-one correspondence with the voice coils 3. Compared with the micro-speaker with the single voice coil 3 structure, the micro-speaker with the multi-voice coil 3 structure has better performance.
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 |
|---|---|---|---|
| CN202420748443.8U CN222339598U (en) | 2024-04-11 | 2024-04-11 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420748443.8U CN222339598U (en) | 2024-04-11 | 2024-04-11 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222339598U true CN222339598U (en) | 2025-01-10 |
Family
ID=94130135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420748443.8U Active CN222339598U (en) | 2024-04-11 | 2024-04-11 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222339598U (en) |
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2024
- 2024-04-11 CN CN202420748443.8U patent/CN222339598U/en active Active
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