CN219019020U

CN219019020U - Micro-speaker, speaker module and electronic equipment

Info

Publication number: CN219019020U
Application number: CN202223019758.9U
Authority: CN
Inventors: 张俊利; 张文华
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-05-12
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a micro-speaker, a speaker module and electronic equipment, wherein the micro-speaker comprises a voice coil and a vibrating diaphragm which is injection molded with the voice coil into an integrated structure, and the vibrating diaphragm comprises: the part area of the inner fixing part is positioned above the top surface of the voice coil and is connected with the top surface of the voice coil; the reinforcing part is positioned on one side of the inner fixing part, which is close to the voice coil, and is connected with the side surface of the voice coil. The voice coil loudspeaker voice coil and the vibrating diaphragm are formed into an integral structure through an injection molding process, so that the bonding strength of the vibrating diaphragm and the voice coil loudspeaker voice coil is effectively enhanced, the phenomenon that the vibrating diaphragm and the voice coil loudspeaker voice coil are easily separated is improved, the structural stability of the miniature loudspeaker is improved, the service life of the miniature loudspeaker is prolonged, and the use experience of a user is enhanced. Moreover, the existence of the reinforcing part effectively increases the bonding area of the diaphragm and the voice coil, so that the bonding strength of the voice coil and the diaphragm is further improved.

Description

Micro-speaker, speaker module and electronic equipment

Technical Field

The present utility model relates to electroacoustic transducers, and more particularly to a micro speaker, a speaker module and an electronic device.

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, there is an increasing demand for micro-speakers to be used therein, and the use of speakers and receivers is becoming popular as large-amplitude speakers or super-linear speakers. The amplitude of the loudspeaker and the receiver is gradually increased from 0.2mm to 0.25mm and 0.3mm till the current ultra-linear or large-amplitude electroacoustic device is more than 0.4mm, and the current ultra-large-amplitude micro-loudspeaker and receiver with 0.65mm are in mass production.

In the design of the existing large-amplitude miniature loudspeaker product, the voice coil is adhered to the vibrating diaphragm, and as the amplitude is continuously increased, at present, the adhesion of the vibrating diaphragm to the voice coil is caused by the factors such as glue strength or the process gluing working condition, and the like, and after the reliability high-temperature experiment of the miniature loudspeaker, the phenomenon that the voice coil is separated from the vibrating diaphragm often occurs, so that the problems of noise of the loudspeaker or no sound of the voice coil due to the falling of the coil are solved.

Disclosure of Invention

The technical problems solved by the utility model are as follows: provided are a micro-speaker with high bonding strength between a voice coil and a diaphragm, a speaker module having the micro-speaker, and an electronic device having the micro-speaker.

In order to solve the technical problems, the first technical scheme adopted by the utility model is as follows: a miniature loudspeaker, includes the voice coil loudspeaker voice coil and with the vibrating diaphragm of voice coil loudspeaker voice coil injection moulding integral type structure, wherein, the vibrating diaphragm includes:

the part area of the inner fixing part is positioned above the top surface of the voice coil and is connected with the top surface of the voice coil;

the reinforcing part is positioned on one side of the inner fixing part, which is close to the voice coil, and is connected with the side surface of the voice coil.

Further, the reinforcement portion is connected to an inner side surface or an outer side surface of the voice coil.

Further, the reinforcing part is in a ring frame shape as a whole.

Further, the reinforcing portion includes a first portion and a second portion that are disposed at intervals, the first portion and the second portion are respectively connected with the internal fixing portion, the first portion is connected with an inner side surface of the voice coil, and the second portion is connected with an outer side surface of the voice coil.

Further, the first portion and the second portion are respectively in a ring frame shape.

Further, the vibrating diaphragm further comprises a ring folding part and an outer fixing part, the inner edge of the ring folding part is connected with the inner fixing part, the outer edge of the ring folding part is connected with the outer fixing part, and the outer fixing part is fixed with the basin frame in an adhesive mode.

Further, the outer edge of the outer fixing part is provided with a wrapping edge, and the wrapping edge is adhered to the outer wall of the basin frame.

Further, the middle area of the inner fixing part is provided with a window, and the inner fixing part further comprises a ball top for closing the window, and the top surface of the inner fixing part is connected with the ball top.

In order to solve the technical problems, the second technical scheme adopted by the utility model is as follows: the loudspeaker module comprises a module shell and the micro loudspeaker, wherein the micro loudspeaker is arranged in the module shell.

In order to solve the technical problems, the third technical scheme adopted by the utility model is as follows: electronic equipment comprises the micro-speaker.

The utility model has the beneficial effects that: the voice coil loudspeaker voice coil and the vibrating diaphragm are formed into an integral structure through an injection molding process, so that the bonding strength of the vibrating diaphragm and the voice coil loudspeaker voice coil is effectively enhanced, the phenomenon that the vibrating diaphragm and the voice coil loudspeaker voice coil are easily separated is improved, the structural stability of the miniature loudspeaker is improved, the service life of the miniature loudspeaker is prolonged, and the use experience of a user is enhanced. Moreover, the existence of the reinforcing part effectively increases the bonding area of the diaphragm and the voice coil, so that the bonding strength of the voice coil and the diaphragm is further 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 cross-sectional view of a micro-speaker according to a second embodiment of the present utility model;

fig. 3 is a cross-sectional view of a micro speaker according to a third embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic circuit assembly;

3. a vibration assembly; 31. a vibrating diaphragm; 311. an inner fixing part; 312. a ring folding part; 313. an outer fixing part; 3131. wrapping edges; 314. a reinforcing part; 3141. a first portion; 3142. a second portion; 32. a dome; 33. and a 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 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, a first embodiment of the present utility model is as follows: a micro-speaker for converting electrical energy into acoustic energy.

The miniature loudspeaker comprises a basin frame 1, a magnetic circuit assembly 2 and a vibration assembly 3, wherein the magnetic circuit assembly 2 and the vibration assembly 3 are respectively arranged on the basin frame 1, the vibration assembly 3 comprises a vibrating diaphragm 31, a top 32 and a voice coil 33, the vibrating diaphragm 31 comprises an inner fixing part 311, a folded ring part 312 and an outer fixing part 313 which are sequentially connected from inside to outside, the folded ring part 312 surrounds the inner fixing part 311, the inner edge of the folded ring part 312 is connected with the inner fixing part 311, the outer fixing part 313 surrounds the folded ring part 312, the outer edge of the folded ring part 312 is connected with the outer fixing part 313, a window is arranged in the middle area of the inner fixing part 311, the top surface of the inner fixing part 311 is connected with the top 32, the top 32 is used for sealing the top 32 of the window, the top 32 plays a role in improving the structural strength of the vibrating diaphragm 31, the top of the voice coil 33 is connected with the inner fixing part 311, and the outer fixing part 313 is connected with the basin frame 1.

In this embodiment, the diaphragm 31 and the voice coil 33 are injection molded into an integral structure, during injection molding, the voice coil 33 is fixed in an injection mold, then liquid rubber or plastic for forming the diaphragm 31 is poured into the injection mold, the liquid rubber or plastic contacts with the voice coil 33, and after the liquid rubber or plastic is solidified, the diaphragm 31 and the voice coil 33 become an integral structure.

Specifically, the diaphragm 31 further includes a reinforcing portion 314 connected to the inner fixing portion 311, the reinforcing portion 314 is located on a side of the inner fixing portion 311 near the voice coil 33, the reinforcing portion 314 is formed synchronously during the forming process of the inner fixing portion 311, a partial area of the inner fixing portion 311 is located above the top surface of the voice coil 33 and is connected to the top surface of the voice coil 33, and the reinforcing portion 314 is connected to a side surface of the voice coil 33.

In this embodiment, the reinforcement portion 314 includes a first portion 3141 and a second portion 3142 that are disposed at intervals, where the first portion 3141 and the second portion 3142 are respectively connected to the inner fixing portion 311, the first portion 3141 is connected to an inner side surface of the voice coil 33, and the second portion 3142 is connected to an outer side surface of the voice coil 33; the first portion 3141 and the second portion 3142 are respectively in a ring frame shape.

The height of the first portion 3141 in the vertical direction may be the same as or different from the height of the second portion 3142 in the vertical direction.

The thickness of the first portion 3141 may be the same as or different from the thickness of the second portion 3142.

Optionally, the outer fixing portion 313 is adhesively fixed to the frame 1, so as to increase the bonding area between the outer fixing portion 313 and the frame 1, further improve the structural stability of the micro-speaker, and preferably, the outer edge of the outer fixing portion 313 has a binding 3131, and the binding 3131 is adhered to the outer wall of the frame 1.

The embodiment also provides a speaker module, the speaker module includes module shell and above-mentioned micro speaker, micro speaker locates in the module shell, micro speaker will the inner space of module shell separates into front chamber and back chamber, be equipped with the intercommunication on the module shell the sound outlet in front chamber.

The embodiment also provides electronic equipment, which comprises the micro-speaker. Including but not limited to cell phones, notebook computers, hearing aids, etc.

Example two

Referring to fig. 2, a second embodiment of the present utility model is as follows: a micro-speaker for converting electrical energy into acoustic energy.

In this embodiment, the reinforcement 314 is connected to the inner surface of the voice coil 33; the reinforcement 314 is in the shape of a ring frame.

The width and height dimensions of the stiffener 314 may be set as desired.

Example III

Referring to fig. 3, a third embodiment of the present utility model is as follows: a micro-speaker for converting electrical energy into acoustic energy.

In this embodiment, the reinforcement 314 is connected to the outer surface of the voice coil 33; the reinforcement 314 is in the shape of a ring frame.

The width and height dimensions of the stiffener 314 may be set as desired.

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. The utility model provides a miniature speaker, its characterized in that includes the voice coil loudspeaker voice coil and with the vibrating diaphragm of voice coil loudspeaker voice coil injection moulding formula structure as an organic whole, wherein, the vibrating diaphragm includes:

2. A micro-speaker as claimed in claim 1, wherein: the reinforcing part is connected with the inner side surface or the outer side surface of the voice coil.

3. A micro-speaker as claimed in claim 2, wherein: the reinforcing part is in a ring frame shape as a whole.

4. A micro-speaker as claimed in claim 1, wherein: the reinforcing part comprises a first part and a second part which are arranged at intervals, the first part and the second part are respectively connected with the inner fixing part, the first part is connected with the inner side face of the voice coil, and the second part is connected with the outer side face of the voice coil.

5. A micro-speaker as claimed in claim 4, wherein: the first part and the second part are respectively in a ring frame shape.

6. A micro-speaker as claimed in claim 1, wherein: the vibrating diaphragm further comprises a ring folding part and an outer fixing part, the inner edge of the ring folding part is connected with the inner fixing part, the outer edge of the ring folding part is connected with the outer fixing part, and the outer fixing part is fixed with the basin frame in an adhesive mode.

7. A micro-speaker as claimed in claim 6, wherein: the outer edge of the outer fixing part is provided with a wrapping edge, and the wrapping edge is adhered to the outer wall of the basin frame.

8. A micro-speaker as claimed in claim 1, wherein: the middle area of the inner fixing part is provided with a window, and the window further comprises a ball top for closing the window, and the top surface of the inner fixing part is connected with the ball top.

9. Speaker module, its characterized in that: comprising a module housing and a micro-speaker according to any one of claims 1-8, said micro-speaker being arranged within said module housing.

10. An electronic device, characterized in that: comprising a micro-speaker according to any of claims 1-8.