CN221886719U

CN221886719U - Micro Speaker

Info

Publication number: CN221886719U
Application number: CN202420201210.6U
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2024-01-25
Filing date: 2024-01-25
Publication date: 2024-10-22
Anticipated expiration: 2034-01-25

Abstract

The utility model discloses a micro-speaker, including a diaphragm, a dome, a voice coil and a frame, wherein the diaphragm includes an inner fixing part, a folding ring part and an outer fixing part connected in sequence from the inside to the outside; the dome is fixedly connected to the inner fixing part; the voice coil is located below the inner fixing part; the frame has a first supporting part connected to the dome, a second supporting part connected to the inner fixing part and a connecting part connected to the voice coil. The second supporting part added to the frame can effectively support the inner fixing part of the diaphragm, improve the deformation phenomenon of the dome pulled by the inner fixing part, thereby reducing the risk of the dome breaking during the reciprocating vibration process, and thus ensuring the structural stability of the dome. Compared with the existing solutions for improving the structural stability of the dome and improving the easy breaking of the dome, the weight of the vibration component in the micro-speaker increases little and the micro-speaker will not be thickened, which effectively avoids the phenomenon of reduced sound sensitivity of the micro-speaker, so that the micro-speaker can maintain excellent acoustic performance.

Description

Micro-speaker

Technical Field

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

Background

Generally, under the requirement of large amplitude, in order to ensure that the voice coil is positioned in a magnetic gap area with denser magnetic induction linear density, a framework connection is arranged between the voice coil and the top of the ball so as to adjust the position of the voice coil in the magnetic gap. Limited by the height and weight limitations of the micro-speaker, the dome thickness is typically designed to be small and therefore relatively weak. When the vibrating diaphragm is fixed below the dome and is electrified and/or subjected to falling reliability test, the vibrating diaphragm can pull the dome to vibrate, and the dome can sometimes break.

In order to solve the above-mentioned problems, in the related art, it is proposed to increase the thickness of the dome to increase the strength of the dome, but this solution can reduce the vibration space of the vibration assembly of the micro-speaker, which cannot meet the requirements of sound production sensitivity. In addition, it has been proposed in the related art to use a stronger material for the dome, but the stronger material is generally denser, thereby greatly increasing the overall weight of the vibration assembly and also affecting the sound production sensitivity.

Disclosure of utility model

The technical problems solved by the utility model are as follows: a micro-speaker is provided which is hardly broken at the dome and has high sound sensitivity.

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

The vibrating diaphragm comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside;

the ball top is fixedly connected with the inner fixing part;

A voice coil located below the inner fixing portion;

The framework is provided with a first supporting part connected with the dome, a second supporting part connected with the internal fixing part and a connecting part connected with the voice coil.

In an embodiment, the skeleton further includes a main body having a ring frame shape, the main body is respectively connected to the connection portion and the first supporting portion, and the second supporting portion is located outside the first supporting portion and is connected to the first supporting portion.

In an embodiment, the first supporting portion is integrally rectangular and has an annular contact surface for contacting the dome.

In an embodiment, the corner of the first support is connected to the second support.

In an embodiment, the short side of the first support part is connected with the second support part.

In an embodiment, the two short sides of the first supporting portion are connected to the second supporting portion, and the second supporting portions connected to the two short sides are symmetrically arranged.

In an embodiment, the long side of the first supporting portion is connected to the second supporting portion.

In an embodiment, the two long sides of the first supporting portion are connected with the second supporting portion, and the second supporting portions connected with the two long sides are symmetrically arranged.

In an embodiment, the long side is connected with a plurality of the second supporting parts.

In an embodiment, the main body, the first supporting portion, the second supporting portion and the connecting portion are integrally formed as a one-piece structure.

The utility model has the beneficial effects that: this miniature loudspeaker novel structure, the second supporting part of setting up on the skeleton can carry out effective support to the internal fixation portion of vibrating diaphragm, can improve internal fixation portion and pull the phenomenon of deformation of ball top, thereby the risk of breaking appears in the ball top at the reciprocal vibration in-process has been reduced, and then the structural stability of ball top has been ensured, compare in current improvement ball top structural stability, improve the easy broken scheme in ball top, vibration subassembly weight increase is little and can not the bodiness miniature loudspeaker in this miniature loudspeaker, the phenomenon that miniature loudspeaker sound production sensitivity reduces has been avoided effectively, make miniature loudspeaker can keep good acoustic performance to show.

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 an exploded view 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 an enlarged view of FIG. 2 at A;

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

fig. 5 is a schematic structural diagram of a part of the micro-speaker according to the second embodiment of the present utility model;

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

fig. 7 is a schematic structural diagram of a skeleton in a micro speaker according to a fourth embodiment of the present utility model;

Fig. 8 is a schematic structural diagram of a skeleton in 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;

3. A vibrating diaphragm; 31. an inner fixing part; 32. a ring folding part; 33. an outer fixing part;

4. A dome;

5. A voice coil;

6. A skeleton; 61. a main body; 62. a first support portion; 63. a second supporting part; 64. a connection part;

7. And a support assembly.

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 merely for explaining a relative positional relationship, a movement condition, and the like between the components in a specific posture as 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 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; 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 application can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows: the micro loudspeaker can be applied to electronic equipment such as mobile phones, tablet computers, intelligent watches, game handles, hearing aids and the like which can emit sound.

The miniature loudspeaker comprises a basin frame 1, a magnetic circuit assembly 2 and a vibration assembly, wherein the magnetic circuit assembly 2 and the vibration assembly are respectively connected with the basin frame 1, the vibration assembly comprises a vibrating diaphragm 3, a ball top 4, a voice coil 5 and a framework 6, the vibrating diaphragm 3 comprises an inner fixing part 31, a folded ring part 32 and an outer fixing part 33 which are sequentially connected from inside to outside, the outer fixing part 33 is connected with the basin frame 1, the ball top 4 is fixedly connected with the inner fixing part 31, the voice coil 5 is positioned below the inner fixing part 31, and the magnetic circuit assembly 2 is provided with a magnetic gap for the voice coil 5 to move; the bobbin 6 may adjust an initial position of the voice coil 5 in the magnetic gap, and the bobbin 6 has a first support portion 62 connected to the dome 4, a second support portion 63 connected to the inner fixing portion 31, and a connection portion 64 connected to the voice coil 5.

In this embodiment, a window is provided in a central area of the inner fixing portion 31, and the dome 4 is connected to a top surface of the inner fixing portion 31 and seals the window; in other embodiments, the dome 4 may be attached to the bottom surface of the inner fixing portion 31, and may be specifically set according to actual needs.

Specifically, the skeleton 6 further includes a main body 61 having a ring frame shape, the main body 61 is connected to the connecting portion 64 and the first supporting portion 62, and the second supporting portion 63 is located outside the first supporting portion 62 and is connected to the first supporting portion 62. The annular frame-shaped main body 61 is not only convenient for assembly production of the micro-speaker, but also can effectively ensure the structural strength of the skeleton 6.

For facilitating the processing and manufacturing of the skeleton 6, the main body 61, the first supporting portion 62, the second supporting portion 63 and the connecting portion 64 are preferably integrally formed as a one-piece structure, and the molding process of the one-piece structure includes, but is not limited to, integral injection molding, integral press molding, and the like.

In this embodiment, the first supporting portion 62 has a rectangular frame shape as a whole, and the first supporting portion 62 has an annular contact surface for contacting the dome 4. The annular contact surface may be continuous or discontinuous, and when the annular contact surface is discontinuous, the connection area of the first support portion 62 and the dome 4 is in a ring frame shape, the first support portion 62 should be considered to form an annular contact surface for contacting the dome 4.

In this embodiment, the second supporting portion 63 is connected to a corner of the first supporting portion 62. In detail, the second supporting portions 63 are respectively connected to the four corners of the first supporting portion 62, so that the frame 6 can be stressed in a balanced manner. In other embodiments, the connection position between the second support portion 63 and the first support portion 62 and the number of the second support portions 63 may be selectively set according to actual needs.

In order to improve the polarization and rolling vibration phenomena of the voice coil 5, the micro-speaker further comprises a support component 7, wherein the support component 7 is connected with the basin frame 1 and the voice coil 5, and the support component 7 comprises a secondary membrane and/or a centering support piece.

Example two

Referring to fig. 5, in a second embodiment of the present utility model, a further improvement of the framework 6 is made on the basis of the technical solution of the first embodiment, specifically: in the frame 6, not only the corner portions but also the second support portions 63 are connected to the first support portions 62, and the second support portions 63 are connected to the long side edges thereof.

Specifically, the second supporting portions 63 are connected to both long sides of the first supporting portion 62, and the second supporting portions 63 connected to both long sides are symmetrically disposed.

Example III

Referring to fig. 6, in a third embodiment of the present utility model, a further improvement of the framework 6 is made on the basis of the technical solution of the first embodiment, specifically: in the frame 6, not only the corner portions of the first support portion 62 are connected with the second support portion 63, but also the short side edges thereof are connected with the second support portion 63.

Specifically, the second supporting portions 63 are connected to both the short sides of the first supporting portion 62, and the second supporting portions 63 connected to both the short sides are symmetrically disposed.

Example IV

Referring to fig. 7, a fourth embodiment of the present utility model is a parallel technical solution of the first embodiment, specifically: in the frame 6, the long side of the first support portion 62 is connected to the second support portion 63, and the corner portion is not connected to the second support portion 63.

Optionally, a plurality of the second supporting parts 63 are connected to the long side. In this embodiment, three second supporting portions 63 are connected to each of the long sides.

Example five

Referring to fig. 8, a fifth embodiment of the present utility model is a parallel technical solution of the first embodiment, specifically: in the frame 6, the short side of the first support portion 62 is connected to the second support portion 63, and the corner portion is not connected to the second support portion 63.

Example six

The sixth embodiment of the present utility model is a parallel technical solution of the first embodiment, specifically: in the framework, the long side and the short side of the first supporting part are respectively connected with the second supporting part, and the corner part is not connected with the second supporting part.

Example seven

The sixth embodiment of the present utility model is a parallel technical solution of the first embodiment, specifically: in the framework, not only the corner of the first supporting part is connected with the second supporting part, but also the short side and the long side of the first supporting part are respectively connected with the second supporting part.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A micro speaker, characterized in that:

A diaphragm, the diaphragm comprising an inner fixing portion, a folding ring portion and an outer fixing portion which are sequentially connected from the inside to the outside;

A ball top, the ball top is fixedly connected to the inner fixing part;

a voice coil, the voice coil being located below the inner fixing portion;

A frame comprises a first supporting portion connected to the dome, a second supporting portion connected to the inner fixing portion, and a connecting portion connected to the voice coil.

2. The micro-speaker according to claim 1 is characterized in that: the frame further comprises a main body in the shape of a ring frame, the main body is respectively connected to the connecting part and the first supporting part, and the second supporting part is located outside the first supporting part and connected to the first supporting part.

3 . The micro-speaker according to claim 2 , wherein the first supporting portion is in the shape of a rectangular frame as a whole, and has an annular contact surface for contacting the dome.

4 . The micro-speaker according to claim 3 , wherein the second supporting part is connected to a corner of the first supporting part.

5 . The micro-speaker according to claim 3 , wherein the short side of the first supporting portion is connected to the second supporting portion.

6 . The micro-speaker according to claim 5 , wherein the two short sides of the first supporting part are both connected to the second supporting part, and the second supporting parts connected to the two short sides are symmetrically arranged.

7 . The micro-speaker according to claim 3 , wherein the long side of the first supporting portion is connected to the second supporting portion.

8 . The micro-speaker according to claim 7 , wherein the two long sides of the first supporting part are both connected to the second supporting part, and the second supporting parts connected to the two long sides are symmetrically arranged.

9 . The micro-speaker according to claim 7 , wherein the long side is connected to a plurality of the second supporting parts.

10 . The micro speaker according to claim 3 , wherein the main body, the first supporting portion, the second supporting portion and the connecting portion are an integrated structure formed by integral processing.