CN220307362U

CN220307362U - Micro-speaker

Info

Publication number: CN220307362U
Application number: CN202321401870.0U
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: 2023-06-02
Filing date: 2023-06-02
Publication date: 2024-01-05
Anticipated expiration: 2033-06-02

Abstract

The utility model discloses a micro-speaker, comprising: the voice coil loudspeaker voice coil and vibrating diaphragm, be equipped with convex bulge loop structure down on the vibrating diaphragm, the voice coil loudspeaker voice coil is located bulge loop structure's below and connect bulge loop structure, bulge loop structure is equipped with the intercommunication the air current passageway of voice coil loudspeaker voice coil outside. Be equipped with the bulge loop structure of connection voice coil loudspeaker voice coil on the vibrating diaphragm, can let more regions of voice coil loudspeaker voice coil subside in the magnetic gap of magnetic circuit subassembly to improve the utilization efficiency to the magnetic field, improve micro-speaker distortion phenomenon, let micro-speaker's BL parameter more symmetrical, and then promote micro-speaker's performance, moreover, the air current passageway on the bulge loop structure can communicate the inside and outside space of voice coil loudspeaker voice production in-process, and the air current in the inside space can circulate the exchange with outside space in time through air current passageway, thereby lets micro-speaker's high frequency sensitivity improve.

Description

Micro-speaker

Technical Field

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

Background

As a device capable of converting electric energy into acoustic energy, a micro speaker has been widely used in microelectronic devices such as smart phones, camcorders, cameras, and notebook computers.

In the prior art, the top surface of voice coil loudspeaker voice coil and the bottom surface adhesive connection of vibrating diaphragm, the voice coil loudspeaker voice coil is through driving the vibrating diaphragm motion in order to make vibrating diaphragm sound production, simultaneously, the voice coil loudspeaker voice coil also separates micro-speaker's inner space into two parts, at micro-speaker sound production in-process, the air current can't circulate in time between voice coil loudspeaker voice coil inner space and outside space to the high frequency sensitivity of micro-speaker receives certain influence.

Disclosure of Invention

The technical problems solved by the utility model are as follows: a micro-speaker with good high-frequency sensitivity is provided.

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

a voice coil;

the vibrating diaphragm is provided with a convex ring structure protruding downwards, the voice coil is located below the convex ring structure and connected with the convex ring structure, and the convex ring structure is provided with an air flow channel communicated with the inner side and the outer side of the voice coil.

Further, the convex ring structure is a hollow convex hull.

Further, the convex ring structure is a solid structure.

Further, the whole convex ring structure is rectangular frame-shaped, the number of the airflow channels is multiple, and the airflow channels with the number being multiple are symmetrically arranged.

Further, the long side and the short side of the convex ring structure are respectively provided with the air flow channel.

Further, the long side of the convex ring structure is provided with the air flow channel.

Further, the short side of the convex ring structure is provided with the air flow channel.

Further, the corners of the convex ring structure are provided with the air flow channels.

Further, the long side and/or the short side of the convex ring structure are/is provided with the air flow channel.

Further, the collar structure has an adhesive flat surface in contact with the top surface of the voice coil.

The utility model has the beneficial effects that: be equipped with the bulge loop structure of connection voice coil loudspeaker voice coil on the vibrating diaphragm, can let more regions of voice coil loudspeaker voice coil subside in the magnetic gap of magnetic circuit subassembly to improve the utilization efficiency to the magnetic field, improve micro-speaker distortion phenomenon, let micro-speaker's BL parameter more symmetrical, and then promote micro-speaker's performance, moreover, the air current passageway on the bulge loop structure can communicate the inside and outside space of voice coil loudspeaker voice production in-process, and the air current in the inside space can circulate the exchange with outside space in time through air current passageway, thereby lets micro-speaker's high frequency sensitivity improve.

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 quarter sectional view of a micro-speaker according to a first embodiment of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic structural diagram of a portion of a micro-speaker according to a first embodiment of the present utility model;

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

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

fig. 6 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;

fig. 7 is a schematic structural diagram of a part of the structure of a micro-speaker according to a fifth embodiment of the present utility model;

fig. 8 is a schematic structural diagram of a part of the structure of a micro-speaker according to a sixth 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; 34. a convex ring structure; 341. a contact plane; 35. an air flow channel;

4. a dome;

5. 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 to 3, a first embodiment of the present utility model is as follows: a micro loudspeaker can be applied to microelectronic devices such as smart phones, camcorders, cameras, notebook computers and the like.

The miniature loudspeaker comprises a basin frame 1, and a vibration component and a magnetic circuit component 2 which are respectively connected with the basin frame 1, wherein the magnetic circuit component 2 comprises a yoke, a central magnetic steel, a central washer, side magnetic steels and Bian Huasi, the central magnetic steel and the side magnetic steels are respectively arranged on the yoke, the central washer is arranged on the top surface of the central magnetic steel, bian Huasi is arranged on the top surface of the side magnetic steel, bian Huasi is connected with the basin frame 1, and a magnetic gap is formed between the central magnetic steel and the side magnetic steels;

the vibration assembly comprises a vibrating diaphragm 3, a ball top 4 and a voice coil 5, wherein the ball top 4 is connected with the vibrating diaphragm 3, and the voice coil 5 is connected with the vibrating diaphragm 3.

In this embodiment, the vibrating diaphragm 3 includes an inner fixing portion 31, a ring folding portion 32 and an outer fixing portion 33 which are sequentially connected from inside to outside, the outer fixing portion 33 is connected with the basin frame 1, a window is formed in the inner fixing portion 31, the dome 4 is connected with the inner fixing portion 31 and seals the window, a convex ring structure 34 protruding downwards is arranged on the vibrating diaphragm 3, the voice coil 5 is located below the convex ring structure 34 and connected with the convex ring structure 34, and an air flow channel 35 which is communicated with the inner side and the outer side of the voice coil 5 is arranged on the convex ring structure 34. Specifically, the convex ring structure 34 is disposed on the inner fixing portion 31; the dome 4 is connected to the inner fixing portion 31, and the dome 4 may be located above the inner fixing portion 31 or below the inner fixing portion 31.

Optionally, the collar structure 34 is bonded to the voice coil 5. Preferably, the collar structure 34 has an adhesion plane in contact with the top surface of the voice coil 5, the adhesion plane being parallel to the top surface of the voice coil 5.

In this embodiment, the convex ring structure 34 is a hollow convex hull. The hollow convex ring structure 34 can reduce the weight of the diaphragm 3, thereby making the micro-speaker lighter and thinner.

In detail, the convex ring structure 34 is integrally rectangular, the number of the air flow channels 35 is multiple, the air flow channels 35 are symmetrically arranged to enable the vibration assembly to vibrate more balanced, the risk of polarization of the vibration assembly is reduced, and performance of the micro-speaker is guaranteed.

Optionally, the long side and the short side of the convex ring 34 are provided with the air flow channels 35. In this embodiment, the middle parts of the two long sides and the middle parts of the two short sides of the convex ring structure 34 are both provided with the air flow channel 35.

In addition, in this embodiment, only one air flow channel 35 is provided on each of the long side and the short side, and in other embodiments, a plurality of air flow channels 35 may be provided on each of the long side and/or the short side, which may be specifically selected according to actual needs.

Example two

Referring to fig. 4, 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 convex ring structure 34 is a solid structure, and the solid convex ring structure 34 can effectively improve the structural strength of the vibrating diaphragm 3, thereby ensuring the acoustic performance of the micro-speaker.

Example III

Referring to fig. 5, a third 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 long sides of the collar structure 34 are provided with air flow channels 35, whereas the short sides of the collar structure 34 are free of said air flow channels 35.

Example IV

Referring to fig. 6, a fourth embodiment of the present utility model is a parallel solution of the first embodiment, and is different from the first embodiment in that: the short sides of the collar structure 34 are provided with air flow channels 35, whereas the long sides of the collar structure 34 are free of said air flow channels 35.

Example five

Referring to fig. 7, a fifth 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 long side and the short side of the convex ring structure 34 are provided with no air flow channel 35, and the corners of the convex ring structure 34 are provided with the air flow channel 35.

Example six

Referring to fig. 8, a sixth 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 collar structure 34 not only has air flow channels 35 on the long and short sides, but also the corners of the collar structure 34 are provided with said air flow channels 35 as well.

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

A voice coil;

2. A micro-speaker as claimed in claim 1, wherein: the convex ring structure is a hollow convex hull.

3. A micro-speaker as claimed in claim 1, wherein: the convex ring structure is a solid structure.

4. A micro-speaker as claimed in claim 1, wherein: the convex ring structure is integrally rectangular and frame-shaped, the number of the airflow channels is multiple, and the airflow channels are symmetrically arranged.

5. A micro-speaker as claimed in claim 4, wherein: the long side edge and the short side edge of the convex ring structure are respectively provided with the air flow channel.

6. A micro-speaker as claimed in claim 4, wherein: the long side of the convex ring structure is provided with the airflow channel.

7. A micro-speaker as claimed in claim 4, wherein: the short side of the convex ring structure is provided with the airflow channel.

8. A micro-speaker as claimed in claim 4, wherein: the corner of the convex ring structure is provided with the airflow channel.

9. A micro-speaker as claimed in claim 8, wherein: the long side edge and/or the short side edge of the convex ring structure are/is provided with the air flow channel.

10. A micro-speaker as claimed in claim 1, wherein: the collar structure has an adhesive planar surface in contact with the top surface of the voice coil.