CN220732995U - Micro-speaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a dome and a plurality of voice coils, wherein the dome is positioned above the voice coils and is provided with a protruding structure protruding downwards, and the bottom of the protruding 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 protruding structure of the dome, so that the problems of asymmetry, large 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.

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;

the top of ball, the top of ball is located the top of voice coil loudspeaker voice coil, the top of ball has the protruding structure of downward bulge, protruding structure's bottom is connected the top of voice coil loudspeaker voice coil.

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

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

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

In one embodiment, at least one group of two adjacent voice coils are arranged in a way that the outer walls of the two adjacent voice coils are close to each other, and the adjacent edges of the two adjacent voice coils are connected with the same convex rib.

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 one 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 ribs.

In one embodiment, the top of the voice coil is provided with a groove structure, and at least part of the area of the protruding structure is embedded in the groove structure.

In one embodiment, the top surface of the voice coil is connected to the bottom surface of the protruding 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 protruding structure of the dome, so that the problems of asymmetry, large 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.

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

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

fig. 5 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 sound membrane;

4. a dome; 41. convex ribs;

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 and 2, a first embodiment of the 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 assembly and a plurality of voice coils 5 connected to the vibrating diaphragm assembly, the vibrating diaphragm assembly comprises a sound diaphragm 3 and a dome 4, the sound 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 is provided with a window, and the dome 4 is connected with the inner fixing part and seals the window; the magnetic circuit assembly 2 has a magnetic gap for the voice coil 5 to move.

The dome 4 is located above the voice coil 5, and the dome 4 has a protruding structure protruding downward, and the bottom of the protruding structure is connected to the top of the voice coil 5.

Specifically, the protruding structure includes a plurality of ribs 41, and each side of the voice coil 5 is correspondingly connected with the ribs 41. Optionally, the ribs 41 are adhered and fixed to the voice coil 5.

At least one group of two adjacent outer walls of the voice coils 5 are close to each other, and the adjacent edges of the two adjacent voice coils 5 are connected with the same convex rib 41, so that the number of the convex ribs 41 can be effectively reduced, the processing and manufacturing of the dome 4 can be facilitated, the structural strength of the dome 4 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 protruding structure is generally in a Chinese character 'ri', and the number of ribs 41 is five. The two adjacent voice coils 5 have a gap between the outer walls of the adjacent edges, or the outer walls of the adjacent edges 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 dome 4, it is preferable that the outer walls of the adjacent edges 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 by winding the voice coils 5, and the like.

Optionally, the protruding structure is hollow convex hull, specifically, the protruding structure is stamping forming's convex hull structure, compares in solid structure, hollow convex hull not only can reduce the production raw materials consumption of dome 4 saves the raw materials cost, can also lighten vibration assembly's whole weight, further promotes micro-speaker's performance.

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

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

Optionally, the micro-speaker further comprises a support assembly, wherein the support assembly connects the voice coil and the basin frame, and the support assembly comprises a secondary membrane and/or a centering support piece.

Example two

Referring to fig. 3, 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 protruding structure is solid structure, compares in hollow protruding structure, and solid protruding structure has the advantage that structural strength is big, and the risk that unexpected deformation appears in dome 4 is lower, and life is longer.

Example III

Referring to fig. 4, the 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 ribs 41.

In this embodiment, the number of the voice coils 5 is two, and the protruding structures include two ring frame structures that are arranged at intervals, and the two ring frame structures are in one-to-one correspondence with the two voice coils 5.

In other embodiments, when the number of voice coils 5 is two, the protruding structure may be shaped like a Chinese character 'mu' as a whole.

Example IV

Referring to fig. 5, a fourth 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 top of the voice coil 5 is provided with a groove structure 51, at least a partial area of the protruding structure being embedded in said groove structure 51. This effectively increases the bonding area between the voice coil 5 and the dome 4, 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 (8)

1. Miniature speaker, its characterized in that: comprising

A plurality of voice coils;

the top of the ball is positioned above the voice coil, the top of the ball is provided with a protruding structure protruding downwards, and the bottom of the protruding structure is connected with the top of the voice coil;

the convex structure is a hollow convex hull or a solid structure.

2. A micro-speaker as claimed in claim 1, wherein: the convex structure comprises a plurality of convex ribs, and each side of the voice coil is correspondingly connected with the convex ribs respectively.

3. A micro-speaker as claimed in claim 2, 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 convex rib.

4. A micro-speaker as claimed in claim 3, wherein: the outer walls of adjacent edges of the adjacent two voice coils are in contact with each other.

5. A micro-speaker as claimed in claim 4, wherein: the outer walls of adjacent edges of the two adjacent voice coils are mutually connected and fixed.

6. A micro-speaker as claimed in claim 2, 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 convex ribs.

7. A micro-speaker as claimed in claim 1, wherein: the top of voice coil is equipped with the groove structure, protruding structure's at least partial region embedding in the groove structure.

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