CN219019019U

CN219019019U - Miniature loudspeaker

Info

Publication number: CN219019019U
Application number: CN202223015894.0U
Authority: CN
Inventors: 张俊利; 张文华; 周喻
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 loudspeaker, which comprises a voice coil and an auxiliary membrane which is formed into an integral structure with the voice coil by injection molding, wherein the auxiliary membrane comprises: an inner mounting portion and a reinforcing portion; the part area of interior installation department is located the below of the bottom surface of voice coil and is connected with the bottom surface of voice coil, and the reinforcing part is located the one side that interior installation department is close to the voice coil to be connected with the side of voice coil. The bottom of voice coil loudspeaker voice coil and vice membrane are integrated into one piece structure through injection molding, have strengthened vice membrane and voice coil loudspeaker voice coil's joint strength effectively, have improved vice membrane and voice coil loudspeaker voice coil easy-to-separate phenomenon, do benefit to the structural stability who improves micro-speaker, extension micro-speaker's life reduces the production of noise, reinforcing user's use experience. In addition, the existence of the reinforcing part effectively increases the bonding area of the auxiliary membrane and the voice coil, so that the bonding strength of the voice coil and the auxiliary membrane is further improved.

Description

Miniature loudspeaker

Technical Field

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

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 current large-amplitude miniature loudspeaker product, in order to improve voice coil loudspeaker voice coil polarization, roll the phenomenon of vibrating, often can select to set up vice membrane in the bottom of voice coil loudspeaker voice coil, vice membrane bonds with the voice coil loudspeaker voice coil, because miniature loudspeaker product amplitude constantly increases, and vice membrane bonds with the voice coil loudspeaker voice coil because factors such as glue intensity or processing procedure gluing operating mode, the phenomenon that voice coil loudspeaker voice coil and vice membrane separated often can appear after the experiment of miniature loudspeaker reliability high temperature, causes speaker noise or vice membrane to break away from problems such as voice coil loudspeaker voice coil.

Disclosure of Invention

The technical problems solved by the utility model are as follows: a micro speaker in which a voice coil and a sub-diaphragm are not easily separated is provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: a micro-speaker comprising a voice coil and a sub-diaphragm injection molded with the voice coil as an integral structure, wherein the sub-diaphragm comprises:

an inner mounting part, wherein a partial area of the inner mounting part is positioned below the bottom surface of the voice coil and is connected with the bottom surface of the voice coil;

and the reinforcing part is positioned at one side of the inner mounting 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 of the voice coil.

Further, the reinforcing portion is connected to an outer side surface of the voice coil.

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

Further, the auxiliary membrane further comprises a folding ring part and an outer mounting part, the folding ring part is respectively connected with the inner mounting part and the outer mounting part, and the outer mounting part is connected with the basin frame.

Further, the outer mounting portion is adhesively connected to the basin stand.

Further, the auxiliary film and the basin frame are formed into an integral structure through injection molding.

Further, at least a partial region of the top surface of the outer mounting part is connected with the basin stand.

Further, the bottom of the basin frame is provided with a containing groove, the auxiliary film is provided with a connecting edge extending into the containing groove, and the connecting edge is connected with the basin frame.

Further, the connection part of the connection edge and the outer installation part is positioned at the outer edge or the middle part of the outer installation part.

The utility model has the beneficial effects that: the bottom of voice coil loudspeaker voice coil and vice membrane are integrated into one piece structure through injection molding, have strengthened vice membrane and voice coil loudspeaker voice coil's joint strength effectively, have improved vice membrane and voice coil loudspeaker voice coil easy-to-separate phenomenon, do benefit to the structural stability who improves micro-speaker, extension micro-speaker's life reduces the production of noise, reinforcing user's use experience. In addition, the existence of the reinforcing part effectively increases the bonding area of the auxiliary membrane and the voice coil, so that the bonding strength of the voice coil and the auxiliary membrane 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 top view of a micro-speaker according to a first embodiment of the present utility model;

fig. 2 is a cross-sectional view taken along line A-A of fig. 1.

Reference numerals illustrate:

1. a basin stand; 11. a receiving groove;

2. a magnetic circuit assembly;

3. a vibration assembly; 31. a vibrating diaphragm; 32. a dome; 33. a voice coil;

4. a secondary membrane; 41. an inner mounting portion; 411. a first wall; 412. a second wall; 42. a ring folding part; 43. an outer mounting portion; 44. and connecting edges.

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 and 2, a first embodiment of the 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, a vibration assembly 3 and a secondary membrane 4 which are respectively arranged on the basin frame 1, wherein the vibration assembly 3 comprises a vibrating diaphragm 31, a dome 32 and a voice coil 33, the dome 32 is respectively connected with the vibrating diaphragm 31 and the voice coil 33, and the vibrating diaphragm 31 is connected with the basin frame 1; the auxiliary membrane 4 connects the bottom of the voice coil 33 with the frame 1.

In this embodiment, the auxiliary membrane 4 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/plastic for forming the auxiliary membrane 4 is poured into the injection mold, the liquid rubber/plastic contacts with the bottom of the voice coil 33, and after the liquid rubber or plastic is solidified, the auxiliary membrane 4 and the voice coil 33 become an integral structure.

The auxiliary membrane 4 comprises an inner mounting part 41, a folded ring part 42 and an outer mounting part 43 which are sequentially connected from inside to outside, the outer mounting part 43 is connected with the basin frame 1, the inner mounting part 41 is connected with a reinforcing part, the reinforcing part is positioned on one side of the inner mounting part 41, which is close to the voice coil 33, the reinforcing part is synchronously molded in the molding process of the inner mounting part 41, a part of area of the inner mounting part 41 is positioned below the bottom surface of the voice coil 33 and is connected with the bottom surface of the voice coil 33, and the reinforcing part is connected with the side surface of the voice coil 33.

In this embodiment, the reinforcement portion includes a first wall 411 and a second wall 412 that are disposed at intervals, the first wall 411 and the second wall 412 are respectively connected to the inner mounting portion 41, the first wall 411 is connected to an inner side surface of the voice coil 33, and the second wall 412 is connected to an outer side surface of the voice coil 33. The first wall 411 and the second wall 412 are formed synchronously during the forming process of the inner mounting portion 41, and the presence of the first wall 411 and the second wall 412 effectively increases the bonding area between the inner mounting portion 41 and the bottom of the voice coil 33, so that a more stable connection can be formed between the inner mounting portion 41 and the bottom of the voice coil 33.

In other embodiments, only one of the first wall 411 and the second wall 412 may be provided. That is, in other embodiments, the inner mounting portion 41 has a first wall 411, the first wall 411 is located inside the voice coil 33 and is connected to the voice coil 33, and in this case, the reinforcing portion is the first wall 411; alternatively, the inner mounting portion 41 may have a second reinforcing wall which is located outside the voice coil 33 and is connected to the voice coil 33, and in this case, the reinforcing portion is the second wall 412.

After the sub-film 4 is injection molded, a partial region of the top surface of the inner mounting portion 41 is connected to the bottom surface of the voice coil 33. Thus, in some embodiments, the first wall 411 and the second wall 412 may not be provided.

At least a partial area of the top surface of the outer mounting part 43 is connected to the tub 1. In some embodiments, the outer mounting portion 43 is adhesively connected to the basin stand 1. In this embodiment, the auxiliary film 4 and the basin frame 1 are injection molded into an integral structure.

Preferably, the bottom of the basin frame 1 is provided with a receiving groove 11, the auxiliary film 4 is provided with a connecting edge 44 extending into the receiving groove 11, and the connecting edge 44 is connected with the basin frame 1. When the auxiliary membrane 4 and the basin frame 1 are injection molded into an integral structure, liquid rubber/plastic automatically flows into the accommodating groove 11 during injection molding, and the liquid rubber/plastic flowing into the accommodating groove 11 is solidified to form the connecting edge 44. The connecting edge 44 is formed synchronously during the forming process of the outer mounting portion 43, and the bonding area of the outer mounting portion 43 and the basin frame 1 is effectively increased due to the existence of the connecting edge 44, so that the outer mounting portion 43 and the basin frame 1 can form a more stable connection.

Optionally, the connection between the connecting edge 44 and the outer mounting portion 43 is located at an outer edge of the outer mounting portion 43. In other embodiments, the connection between the connecting edge 44 and the outer mounting portion 43 may be located in the middle of the outer mounting portion 43.

As a preferred embodiment, the voice coil 33, the sub-diaphragm 4 and the frame 1 are formed as a single body by a single injection molding process. Therefore, two adhesive procedures can be reduced, the production process of the micro-speaker is simplified, the manufacturing time of the micro-speaker is saved, and the manufacturing cost of the micro-speaker is reduced.

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 voice coil loudspeaker voice coil and with the vice membrane of voice coil loudspeaker voice coil injection moulding integrated into one piece structure, wherein, vice membrane includes:

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

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

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

5. A micro-speaker as claimed in claim 1, wherein: the auxiliary membrane also comprises a folding ring part and an outer mounting part, the folding ring part is respectively connected with the inner mounting part and the outer mounting part, and the outer mounting part is connected with the basin frame.

6. A micro-speaker as claimed in claim 5, wherein: the outer mounting part is connected with the basin frame in an adhesive mode.

7. A micro-speaker as claimed in claim 5, wherein: the auxiliary film and the basin frame are injection molded into an integrated structure.

8. A micro-speaker as claimed in claim 5, wherein: at least part of the top surface of the outer mounting part is connected with the basin frame.

9. A micro-speaker as claimed in claim 5, wherein: the bottom of the basin frame is provided with a containing groove, the auxiliary film is provided with a connecting edge which stretches into the containing groove, and the connecting edge is connected with the basin frame.

10. A micro-speaker as claimed in claim 9, wherein: the connecting edge is connected with the outer mounting part and is positioned at the outer edge or the middle part of the outer mounting part.