CN219876073U

CN219876073U - Micro-speaker and speaker module

Info

Publication number: CN219876073U
Application number: CN202320339369.XU
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: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-10-20
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a micro-speaker and a speaker module, wherein the micro-speaker comprises a vibrating diaphragm, a middle paste and a centering support piece, 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, and a window is arranged on the inner fixing part; the middle paste covers the window, and is fixedly connected with the inner fixing part; the centering support piece comprises an inner mounting part, a hollow area is formed in the center of the inner mounting part, support piece reinforcing ribs are arranged in the hollow area, the support piece reinforcing ribs are connected with the inner mounting part, and the support piece reinforcing ribs are connected with middle stickers. The support piece reinforcing rib is additionally arranged on the centering support piece for correcting the voice coil, and is connected with the middle paste, so that the support piece reinforcing rib plays a role of supporting the middle paste, the integral rigidity of the vibration system is improved, the split vibration generated on the middle paste of the micro-speaker during high frequency suppression is facilitated, the high-frequency performance of the micro-speaker is improved, the effect of improving the sounding quality of the micro-speaker is achieved, and the failure risk of the micro-speaker is reduced.

Description

Micro-speaker and speaker module

Technical Field

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

Background

The vibrating diaphragm used by the electroacoustic transducer in the prior art especially refers to the vibrating diaphragm positioned at the position of the sound outlet, so as to drive air to vibrate to obtain more remarkable sound volume and sound quality effects, the vibrating diaphragm is provided with a folded ring part, and the vibrating action of the vibrating diaphragm is enhanced through the elastic deformation action formed by the curved surface formed by the folded ring part.

When the size of the miniature loudspeaker is larger, the design of a single middle paste is adopted, so that the size of the middle paste is larger, the middle paste is difficult to be well supported in the vibrating process of the vibrating diaphragm, and the middle paste can generate split vibration due to insufficient rigidity, so that the high-frequency sensitivity of a product is affected.

In order to improve the polarization and rolling vibration phenomena of the voice coil when the amplitude is large, a centering support piece is additionally arranged in part of the miniature loudspeaker, the centering support piece comprises an inner mounting part, a cantilever and an outer mounting part, the cantilever is connected with the inner mounting part and the outer mounting part, the inner mounting part is respectively connected with the vibrating diaphragm and the voice coil, and the outer mounting part is connected with the vibrating diaphragm and the basin frame.

Disclosure of Invention

The utility model mainly aims to provide a miniature loudspeaker with a novel structure and a loudspeaker module, and aims to solve the problem that the high-frequency sensitivity of a product is affected due to split vibration generated by a middle paste in the working process of the traditional miniature loudspeaker.

In order to solve the technical problems, the first technical scheme adopted by the utility model is as follows: 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, and a window is arranged on the inner fixing part;

the middle paste covers the open window and is fixedly connected with the inner fixing part;

the centering support piece comprises an inner mounting portion, a vacant area is formed in the center of the inner mounting portion, support piece reinforcing ribs are arranged in the vacant area, the support piece reinforcing ribs are connected with the inner mounting portion, and the support piece reinforcing ribs are connected with the middle paste.

Further, the number of the support piece reinforcing ribs is one or more.

Further, the number of the support piece reinforcing ribs is two, and the two support piece reinforcing ribs are interconnected to form a cross-shaped structure.

Further, a boss is arranged on one side of the middle paste, which is close to the centering support piece, and the boss is connected with the support piece reinforcing rib.

Further, the middle paste and the boss are of an integrated structure which is integrally processed and formed.

Further, a membrane reinforcing rib is arranged in the window, the membrane reinforcing rib is connected with the inner fixing part, the top surface of the membrane reinforcing rib is connected with the middle paste, and the bottom surface of the membrane reinforcing rib is connected with the support reinforcing rib.

Further, the top surface of the membrane reinforcing rib is flush with the top surface of the inner fixing portion, and the bottom surface of the membrane reinforcing rib is flush with the bottom surface of the inner fixing portion.

Further, the support piece reinforcing ribs are connected with the middle paste through glue layers in an adhesive mode.

Further, still include the basin frame and locate magnetic circuit subassembly on the basin frame, centring disk is connected the basin frame, magnetic circuit subassembly includes central washer, the top surface of central washer is equipped with and is used for dodging the groove of dodging of disk strengthening rib.

In order to solve the technical problems, the second technical scheme adopted by the utility model is as follows: the loudspeaker module comprises the micro loudspeaker.

The utility model has the beneficial effects that: the support piece reinforcing rib is additionally arranged on the centering support piece for correcting the voice coil, and is connected with the middle paste, so that the support piece reinforcing rib plays a role of supporting the middle paste, the integral rigidity of the vibration system is improved, the split vibration generated on the middle paste of the micro-speaker during high frequency suppression is facilitated, the high-frequency performance of the micro-speaker is improved, the effect of improving the sounding quality of the micro-speaker is achieved, and the failure risk of the micro-speaker is reduced.

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 cross-sectional view of a partial area of a micro-speaker according to a second embodiment of the present utility model;

fig. 6 is a schematic structural view (exploded view state) of a part of the structure of a micro speaker according to a second embodiment of the present utility model;

fig. 7 is a cross-sectional view of a partial area of a micro-speaker according to a third embodiment of the present utility model;

fig. 8 is a schematic structural view (exploded view state) of a part of the structure in a micro speaker according to a third embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a part of the structure of a micro-speaker according to a fourth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a vibrating diaphragm; 21. an inner fixing part; 22. a ring folding part; 23. an outer fixing part; 24. membrane reinforcing ribs;

3. a voice coil;

4. middle paste; 41. a boss;

5. centering support pieces; 51. an inner mounting portion; 52. a cantilever; 53. an outer mounting portion; 54. a support piece reinforcing rib;

61. a magnetic shield; 62. edge magnetic steel; 63. a center magnetic steel; 64. a central washer; 641. an avoidance groove;

7. and (5) a glue layer.

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.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows: the miniature loudspeaker comprises a basin frame 1, a magnetic circuit assembly, a vibration assembly and a centering support piece 5 which are respectively arranged on the basin frame 1;

the vibration assembly comprises a vibrating diaphragm 2, a voice coil 3 and a middle paste 4, wherein the vibrating diaphragm 2 comprises an inner fixing part 21, a folded ring part 22 and an outer fixing part 23 which are sequentially connected from inside to outside, a window is arranged on the inner fixing part 21, the middle paste 4 is positioned on the outer side of the inner fixing part 21, and the middle paste 4 covers the window and is fixedly connected with the inner fixing part 21; the centering support piece 5 comprises an inner mounting part 51, a cantilever 52 and an outer mounting part 53 which are sequentially connected, a hollow area is formed in the center of the inner mounting part 51, support piece reinforcing ribs 54 are arranged in the hollow area, the support piece reinforcing ribs 54 are connected with the inner mounting part 51, and the support piece reinforcing ribs 54 are connected with the middle patch 4; the voice coil 3 is fixed on the inner side of the inner mounting part 51, the outer side of the inner mounting part 51 is connected with the inner fixing part 21, and the outer mounting part 53 is connected and fixed with the outer fixing part 23 and the basin frame 1 respectively;

the magnetic circuit assembly comprises a magnetic cover 61, side magnetic steels 62, a center magnetic steel 63, a center washer 64 and Bian Huasi, wherein the side magnetic steels 62 and the center magnetic steel 63 are respectively arranged on the magnetic cover 61, the center washer 64 is arranged on the top surface of the center magnetic steel 63, bian Huasi is arranged on the basin frame 1 and fixedly connected with the top surface of the side magnetic steel 62, the number of the side magnetic steels 62 is multiple, the center magnetic steel 63 is arranged between at least one group of two side magnetic steels 62 which are oppositely arranged, and a magnetic gap matched with the voice coil 3 is formed between the center magnetic steel 63 and the side magnetic steel 62.

The number of the support ribs 54 is one or more. Alternatively, the whole inner mounting portion 51 is rectangular, in this embodiment, the number of the support ribs 54 is one, and one support rib 54 is connected to a set of opposite sides of the inner mounting portion 51. The support rib 54 may be parallel to the side wall of the inner mounting portion 51 or may be inclined at a certain angle with respect to the side wall of the inner mounting portion 51, so that the support rib 54 is flexibly arranged. The connection between the middle patch 4 and the support rib 54 includes, but is not limited to, adhesive connection.

The material of the support rib 54 may be the same as or different from the material of the inner mounting portion 51, and may be set according to actual needs and production conditions, thereby enriching the diversity of the micro-speaker.

In this embodiment, a boss 41 is disposed on a side of the middle patch 4 near the centering support piece 5, and the boss 41 is connected with the support piece reinforcing rib 54, that is, the support piece reinforcing rib 54 is connected with the middle patch 4 through the boss 41. The boss 41 not only plays a role in improving the self strength of the middle paste 4 so as to improve the overall rigidity of the vibration assembly, but also plays a role in filling the gap between the middle paste 4 and the support piece reinforcing ribs 54 and providing a connecting position for the support piece reinforcing ribs 54.

The material of the boss 41 may be the same as or different from the material of the middle patch 4, and when the material of the two is the same, it is preferable that the middle patch 4 and the boss 41 are integrally formed as a single body.

In order to avoid noise caused by the impact of the support rib 54 on the central washer 64 when the vibration assembly vibrates, the top surface of the central washer 64 is optionally provided with an avoiding groove 641 for avoiding the support rib 54.

The embodiment also provides a speaker module which can be applied to electronic equipment such as a mobile phone, a notebook computer, a hearing aid, a smart watch, a portable game machine and the like. The loudspeaker module comprises a shell and a sound generating device arranged in the shell, and the sound generating device is the micro loudspeaker.

Example two

Referring to fig. 5 and 6, 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: the inner fixing part 21 is provided with a membrane reinforcing rib 24 in the window, the membrane reinforcing rib 24 is connected with the inner fixing part 21, the middle paste 4 is connected with the top surface of the membrane reinforcing rib 24, and the bottom surface of the membrane reinforcing rib 24 is connected with a supporting rib 54. The membrane stiffener 24 is attached to the center post 4/piece stiffener 54 by means including, but not limited to, adhesive attachment.

In this case, the boss 41 may be provided on the intermediate sheet 4. When the boss 41 is not arranged on the middle paste 4, the gap between the middle paste 4 and the support piece reinforcing ribs 54 is completely filled by the film reinforcing ribs 24; when the boss 41 is provided on the middle patch 4, the sum of the height of the boss 41 and the thickness of the membrane rib 24 is less than or equal to the thickness of the gap between the middle patch 4 and the support rib 54.

Optionally, the top surface of the membrane stiffener 24 is flush with the top surface of the inner fixing portion 21, and the bottom surface of the membrane stiffener 24 is flush with the bottom surface of the inner fixing portion 21.

In addition, the membrane reinforcement rib 24 and the inner fixing portion 21 may be made of the same material or different materials. When the membrane reinforcing ribs 24 and the inner fixing portion 21 are made of the same material, they may be integrally formed by an injection molding process; when the membrane reinforcing ribs 24 and the inner fixing portion 21 are made of different materials, the inner fixing portion 21 and the membrane reinforcing ribs 24 may be connected by two-shot molding, or may be connected by an insert molding process, or may be connected by other processes.

Example III

Referring to fig. 7 and 8, the third embodiment of the present utility model is a parallel solution of the first embodiment/the second embodiment, and is different from the first embodiment/the second embodiment in that: the center mount 4 of the micro speaker of the present embodiment has no boss 41 and no film reinforcement rib 24 in the window of the inner fixing portion 21.

In this embodiment, the support rib 54 and the middle patch 4 are connected by glue through the glue layer 7. I.e. the gap between the middle patch 4 and the support rib 54 is completely filled by the adhesive layer 7.

Example IV

Referring to fig. 9, a fourth embodiment of the present utility model is a further improvement of the centering support 5 based on the first embodiment, and is different from the first embodiment in that: the number of the support reinforcing ribs 54 is two, and the two support reinforcing ribs 54 are interconnected to form a cross-shaped structure.

In other embodiments, two of the sheet ribs 54 may be parallel to each other or arranged in a splayed configuration or other configurations are possible.

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. Miniature speaker, its characterized in that: comprising

2. A micro-speaker as claimed in claim 1, wherein: the number of the support piece reinforcing ribs is one or more.

3. A micro-speaker as claimed in claim 2, wherein: the number of the support piece reinforcing ribs is two, and the two support piece reinforcing ribs are interconnected to form a cross-shaped structure.

4. A micro-speaker as claimed in claim 1, wherein: and a boss is arranged on one side of the middle paste, which is close to the centering support piece, and is connected with the support piece reinforcing rib.

5. A micro-speaker as claimed in claim 4, wherein: the middle paste and the boss are of an integrated structure which is integrally processed and formed.

6. A micro-speaker as claimed in claim 1, wherein: the inner fixing part is connected with the inner fixing part, the middle paste is connected with the top surface of the membrane reinforcing rib, and the support piece reinforcing rib is connected with the bottom surface of the membrane reinforcing rib.

7. A micro-speaker as claimed in claim 6, wherein: the top surface of the membrane reinforcing rib is flush with the top surface of the inner fixing portion, and the bottom surface of the membrane reinforcing rib is flush with the bottom surface of the inner fixing portion.

8. A micro-speaker as claimed in claim 1, wherein: the support piece reinforcing ribs are connected with the middle paste through glue layers in an adhesive mode.

9. A micro-speaker as claimed in claim 1, wherein: the basin frame is further provided with a basin frame and a magnetic circuit assembly arranged on the basin frame, the centering support piece is connected with the basin frame, the magnetic circuit assembly comprises a center washer, and an avoidance groove for avoiding the support piece reinforcing ribs is formed in the top surface of the center washer.

10. Speaker module, its characterized in that: comprising a micro-speaker according to any of claims 1-9.