CN220606063U - Micro-speaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a vibrating diaphragm and a plurality of voice coils, wherein the vibrating diaphragm is positioned above the voice coils, the vibrating diaphragm comprises an inner fixing part, the inner fixing part comprises a body and an overhead structure, the body and the overhead structure are integrally processed and formed into an integral structure, the overhead structure is positioned below the body, and the bottom of the overhead structure is connected with the top of the voice coils. The micro-speaker with the multi-voice coil framework is novel in structure, the position of the voice coil in the magnetic gap can be adjusted by adjusting the height of the overhead structure of the internal fixing part of the vibrating diaphragm, so that the problems of asymmetry, larger harmonic distortion and the like of the micro-speaker BL are solved, and the performance of the micro-speaker is effectively improved. And an additional framework structure is not required, so that the assembly and the manufacture of the micro-speaker are facilitated, and the manufacturing cost of the micro-speaker is controlled. When the vibrating diaphragm is molded by adopting an injection molding process, the overhead structure and the body can be synchronously molded, so that the processing and the manufacturing of the miniature loudspeaker are facilitated.

Description

Micro-speaker

Technical Field

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

Background

The micro speaker is widely applied to portable electronic devices such as mobile communication devices, palm computers, hand-held game machines, GPS navigation devices, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, performance requirements for the micro-speakers used thereon are increasing.

In order to solve the above-mentioned problems, a micro-speaker having a multi-voice coil structure is proposed in the related art. However, in the micro-speaker with the multi-voice coil structure, the position of the voice coil in the magnetic gap is often not very suitable, so that BL asymmetry is caused, harmonic distortion is large, and performance of the micro-speaker is affected.

Disclosure of Invention

The technical problems solved by the utility model are as follows: a high performance multi-voice coil micro-speaker is provided.

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

a plurality of voice coils;

vibrating diaphragm, the vibrating diaphragm is located the top of voice coil loudspeaker voice coil, the vibrating diaphragm includes internal fixation portion, internal fixation portion is including continuous body and overhead structure, the body with overhead structure is integrated into one piece's structure, overhead structure is located the below of body, overhead structure's bottom is connected the top of voice coil loudspeaker voice coil.

In one embodiment, the overhead structure is a hollow convex hull.

In one embodiment, the overhead structure is a solid structure.

In an embodiment, the overhead structure includes a plurality of frames, and each side of the voice coil is correspondingly connected with the frame.

In an embodiment, at least one group of two adjacent outer walls of the voice coils are close to each other, and adjacent edges of the two adjacent voice coils are connected to the same frame.

In one embodiment, the outer walls of adjacent edges of the adjacent two voice coils are in contact with each other.

In one embodiment, the outer walls of adjacent edges of the two adjacent voice coils are fixedly connected with each other.

In an embodiment, at least one group of adjacent two voice coils has a gap between the outer walls, and adjacent edges of the adjacent two voice coils are connected with different frames.

In one embodiment, the top of the voice coil is provided with a slot structure, and at least a partial area of the overhead structure is embedded in the slot structure.

In one embodiment, the top surface of the voice coil is connected to the bottom surface of the overhead structure.

The utility model has the beneficial effects that: the micro-speaker with the multi-voice coil framework is novel in structure, the position of the voice coil in the magnetic gap can be adjusted by adjusting the height of the overhead structure of the internal fixing part of the vibrating diaphragm, so that the problems of asymmetry, larger harmonic distortion and the like of the micro-speaker BL are solved, and the performance of the micro-speaker is effectively improved. And the assembly and the manufacture of the miniature loudspeaker are facilitated without arranging an extra framework structure, and the manufacturing cost of the miniature loudspeaker is controlled. In addition, when the vibrating diaphragm is formed by adopting an injection molding process, the overhead structure can be synchronously injection molded, and the processing and the manufacturing of the miniature loudspeaker can be further facilitated.

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 a schematic structural diagram of a diaphragm in a micro-speaker according to a first embodiment of the present utility model;

fig. 4 is a cross-sectional view of a micro-speaker according to a second embodiment of the present utility model;

fig. 5 is a cross-sectional view of a micro speaker according to a third embodiment of the present utility model;

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

fig. 7 is a cross-sectional view of a micro speaker according to a fourth embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. a magnetic circuit assembly;

3. a vibrating diaphragm; 31. a frame; 32. windowing;

4. middle paste;

5. a voice coil; 51. a trough structure;

6. 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, 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: the micro-speaker can be applied to electronic equipment such as mobile communication equipment, palm computers, hand-held game machines, GPS navigation devices, notebook computers, hearing aids and the like.

The miniature loudspeaker comprises a basin frame 1 and a vibration assembly and a magnetic circuit assembly 2 which are respectively connected with the basin frame 1, wherein the vibration assembly comprises a vibrating diaphragm 3 and a plurality of voice coils 5 connected to the vibrating diaphragm 3, the vibrating diaphragm 3 is positioned above the voice coils 5, the vibrating diaphragm 3 comprises an inner fixing part, a ring folding part and an outer fixing part which are sequentially connected from inside to outside, the outer fixing part is connected with the basin frame 1, the inner fixing part comprises a body and an overhead structure which are connected, the body and the overhead structure are integrally formed into an integral structure, the overhead structure is positioned below the body, the outer edge of the body is connected with the ring folding part, the bottom of the overhead structure is connected with the top of the voice coils 5, and the magnetic circuit assembly 2 is provided with a magnetic gap for the voice coils 5 to move.

Specifically, the overhead structure includes a plurality of frames 31, and each side of the voice coil 5 is correspondingly connected with the frame 31. Optionally, the frame 31 is adhered to and fixed to the voice coil 5.

At least a group of two adjacent outer walls of the voice coil 5 are close to each other, and the adjacent edges of the two adjacent voice coils 5 are connected with the same frame 31, so that the number of the frames 31 can be effectively reduced, the diaphragm 3 can be processed and manufactured conveniently, the structural strength of the diaphragm 3 can be enhanced to a greater extent, and the structural stability of the vibration assembly can be improved.

In this embodiment, the number of voice coils 5 is two, the whole overhead structure is generally in a shape like a Chinese character 'ri', and the number of frames 31 is five. The two adjacent voice coils 5 have a gap between the outer walls of the adjacent sides, or the outer walls of the adjacent sides of the two adjacent voice coils 5 are in contact with each other, but in order to further improve the structural stability of the vibration assembly, and facilitate the assembly of the voice coils 5 and the vibrating diaphragm 3, it is preferable that the outer walls of the adjacent sides of the two adjacent voice coils 5 are mutually connected and fixed, and the two adjacent voice coils 5 are mutually connected and fixed in various manners, such as glue connection, double-sided adhesive paper connection, self-adhesive layer connection of enameled wires per se by winding the voice coils 5, and the like.

Optionally, the overhead structure is a solid structure, and compared with a hollow overhead structure, the solid overhead structure has the advantage of high structural strength, and the risk of unexpected deformation of the diaphragm 3 is lower, so that the service life is longer.

In this embodiment, the top surface of the voice coil 5 is connected to the bottom surface of the overhead structure.

It should be noted that, in other embodiments, the number of the voice coils 5 may be three, four, five or even more.

In order to improve the structural strength of the internal fixing portion and improve the unexpected deformation phenomenon of the diaphragm 3, optionally, the vibration assembly further includes a middle patch 4, and the middle patch 4 is located on one side of the diaphragm 3 away from the voice coil 5 and is fixedly connected with the internal fixing portion.

Further, the inner fixing part is provided with a window 32, the middle sticker 4 seals the window 32, and the setting of the window 32 not only can reduce the production consumable of the vibrating diaphragm 3 and save the manufacturing raw material cost of the micro-speaker, but also can reduce the whole weight of the vibrating assembly, thereby improving the performance of the micro-speaker.

Optionally, the micro-speaker further comprises a support component 6, the support component 6 connects the voice coil 5 and the basin frame 1, and the support component 6 comprises a secondary membrane and/or a centering support piece.

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 overhead structure is hollow convex hull, compares in solid overhead structure, hollow convex hull not only can reduce the raw materials consumption of production of vibrating diaphragm 3, saves raw materials cost, can also lighten vibration assembly's whole weight, further promotes micro-speaker's performance.

Example III

Referring to fig. 5 and 6, 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: at least one group of adjacent two voice coils 5 has a gap between the outer walls, and adjacent edges of the adjacent two voice coils 5 are connected with different frames 31.

In this embodiment, the number of the voice coils 5 is two, the overhead structure includes two ring frame structures arranged at intervals, each ring frame structure includes four frames 31, and two ring frame structures are in one-to-one correspondence with two voice coils 5.

In other embodiments, when the number of voice coils 5 is two, the overhead structure may be generally in the shape of a mesh.

Example IV

Referring to fig. 7, 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 top of the voice coil 5 is provided with a slot structure 51, at least part of the area of the overhead structure being embedded in said slot structure 51. This effectively increases the bonding area between the voice coil 5 and the diaphragm 3, thereby improving the structural stability of the micro-speaker.

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 (10)

1. Miniature speaker, its characterized in that: comprising

A plurality of voice coils;

vibrating diaphragm, the vibrating diaphragm is located the top of voice coil loudspeaker voice coil, the vibrating diaphragm includes internal fixation portion, internal fixation portion is including continuous body and overhead structure, the body with overhead structure is integrated into one piece's structure, overhead structure is located the below of body, overhead structure's bottom is connected the top of voice coil loudspeaker voice coil.

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

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

4. A micro-speaker as claimed in claim 1, wherein: the overhead structure comprises a plurality of frames, and each side of the voice coil is correspondingly connected with the frame.

5. A micro-speaker as claimed in claim 4, wherein: at least one group of adjacent two outer walls of the voice coils are close to each other, and adjacent edges of the adjacent two voice coils are connected with the same frame.

6. A micro-speaker as claimed in claim 5, wherein: the outer walls of adjacent edges of the adjacent two voice coils are in contact with each other.

7. A micro-speaker as claimed in claim 6, wherein: the outer walls of adjacent edges of the two adjacent voice coils are mutually connected and fixed.

8. A micro-speaker as claimed in claim 4, wherein: at least one group of adjacent two outer walls of the voice coils are provided with gaps, and adjacent edges of the adjacent two voice coils are connected with different frames.

9. A micro-speaker as claimed in claim 1, wherein: the top of voice coil is equipped with the slot structure, the at least partial region of overhead structure imbeds in the slot structure.

10. A micro-speaker as claimed in claim 1, wherein: the top surface of voice coil loudspeaker voice coil with the bottom surface of overhead structure is connected.