CN221058437U - Micro-speaker - Google Patents

Abstract

The utility model discloses a micro-speaker, which comprises a dome and a voice coil, wherein the dome comprises a main body, and the main body is provided with an upward convex upper convex hull; the voice coil loudspeaker voice coil includes the body, the top surface of body is connected the ball top, go up the partial region of convex closure and stride across the top of body in order to construct the air current passageway that communicates the inboard space and the outside space of body. The upper convex hull is arranged on the dome, so that the structural strength of the dome can be improved, the risk of large deformation of the dome is reduced, and an air flow channel which is communicated with the inner space and the outer space of the voice coil body can be constructed, so that air flow exchange between the inner side and the outer side of the voice coil is smooth, high-frequency sensitivity of the micro-speaker during operation is improved, and acoustic performance of the micro-speaker is improved.

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 phones, notebook computers, hearing aids and the like. With the rapid development of these portable electronic devices, micro speakers have also been developed correspondingly rapidly.

In the prior art, the voice coil drives the diaphragm to sound through driving the dome motion, and meanwhile, the voice coil also separates the inner space of the loudspeaker into two parts, and in the sound production process, the air flow in the cavity inside the voice coil cannot circulate with the outside, so that the high-frequency sensitivity of the micro loudspeaker can be influenced to a certain extent.

Disclosure of utility model

The utility model mainly aims to provide a miniature loudspeaker with a novel structure, and aims to solve the problem that the air flow exchange between the inner side and the outer side of a voice coil in the traditional miniature loudspeaker is not smooth.

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

a dome comprising a body having an upwardly projecting upper convex hull;

The voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil includes the body, the top surface of body is connected the ball top, go up the partial region of convex closure and stride across the top of body in order to construct the intercommunication the air current passageway of inboard space and outside space of body.

In one embodiment, the top surface of the body is adhesively attached to the bottom surface of the body.

In an embodiment, the upper convex hull includes a central convex hull region and a plurality of extended convex hull regions, the extended convex hull regions are disposed corresponding to the body, and an inner space of the extended convex hull regions is configured as the air flow channel.

In an embodiment, the number of the extended convex hull regions is plural, and the upper convex hull is in an axisymmetric structure.

In an embodiment, the central convex hull region is rectangular overall, and one side of the central convex hull region is provided with one or more extending convex hull regions.

In an embodiment, the long side and/or the short side of the central convex hull region is provided with the extended convex hull region.

In an embodiment, the central convex hull region is rectangular overall, and corners of the central convex hull region are provided with the extended convex hull regions.

In one embodiment, the edge of the central convex hull region is disposed proximate the inner peripheral wall of the voice coil.

In an embodiment, the upper convex hull is provided with a plurality of concave parts.

In an embodiment, the upper convex hull is a stamped structure formed by stamping.

The utility model has the beneficial effects that: the upper convex hull is arranged on the dome, so that the structural strength of the dome can be improved, the risk of large deformation of the dome is reduced, and an air flow channel which is communicated with the inner space and the outer space of the voice coil body can be constructed, so that air flow exchange between the inner side and the outer side of the voice coil is smooth, high-frequency sensitivity of the micro-speaker during operation is improved, and acoustic performance of the micro-speaker is 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 an enlarged view of FIG. 1 at A;

Fig. 3 is a schematic structural diagram of a dome in a micro speaker according to a first embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a dome in a micro speaker according to another structure of the first embodiment of the present utility model.

Reference numerals illustrate:

1. a basin stand;

2. A magnetic circuit system;

3. A sound membrane;

4. A dome; 41. a main body; 42. a convex hull is arranged; 421. a central convex hull region; 422. extending the convex hull region; 423. a concave portion;

5. a voice coil;

6. An air flow channel.

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 merely for explaining a relative positional relationship, a movement condition, and the like between the components in a specific posture as 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 the present application, unless explicitly specified 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 above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present utility model is as follows: the micro loudspeaker can be applied to electronic equipment such as mobile phones, intelligent watches, computers and the like.

As shown in fig. 1 to 3, the micro-speaker comprises a basin frame 1, and a vibration system and a magnetic circuit system 2 which are respectively connected with the basin frame 1, wherein the vibration system comprises a vibrating diaphragm assembly and a voice coil 5, the vibrating diaphragm assembly comprises a sound membrane 3 and a dome 4 connected with the sound membrane 3, and the voice coil 5 is connected with the dome 4; the magnetic circuit system 2 comprises a magnetic shield, a central magnetic structure and a side magnetic structure, wherein the central magnetic structure and the side magnetic structure are arranged on the magnetic shield, and a magnetic gap for the voice coil 5 to move is formed between the central magnetic structure and the side magnetic structure.

The sound membrane 3 comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, a window is arranged on the inner fixing part, the dome 4 is connected with the inner fixing part and seals the window, and the outer fixing part is connected with the basin frame 1. Specifically, the dome 4 includes a main body 41, the main body 41 has an upper convex hull 42 protruding upward, and the top surface of the main body 41 is connected to the bottom surface of the inner fixing portion, or the bottom surface of the main body 41 is connected to the top surface of the inner fixing portion. In this embodiment, the upper convex hull 42 is a stamped structure formed by stamping. In other embodiments, the upper lobe 42 may be formed by injection molding or other molding processes.

The voice coil 5 comprises a body, the top surface of the body is connected with the dome 4, and a partial region of the upper convex hull 42 spans over the body to construct an air flow channel 6 which is communicated with the inner space and the outer space of the body. Specifically, the top surface of the body is connected to the bottom surface of the main body 41, and optionally, the top surface of the body is adhesively connected to the bottom surface of the main body 41.

In this embodiment, the upper convex hull 42 includes a central convex hull region 421 and a plurality of extended convex hull regions 422, the extended convex hull regions 422 are disposed corresponding to the body, and the inner space of the extended convex hull regions 422 is configured to form the air flow channel 6. In other embodiments, it is also possible that the upper convex hull 42 has only the extended convex hull region 422, and does not have the central convex hull region 421.

The number of the extended convex hull areas 422 is plural, and the upper convex hull 42 has an axisymmetric structure, so that the inner and outer sides of the voice coil 5 can perform air flow interaction more uniformly. Optionally, the central convex hull area 421 is rectangular overall, and one side of the central convex hull area 421 is provided with one or more extended convex hull areas 422, specifically, long sides and/or short sides of the central convex hull area 421 are provided with the extended convex hull areas 422. In this embodiment, the middle part of the long side and the middle part of the short side of the central convex hull area 421 are respectively provided with the extended convex hull area 422; of course, it is also possible that the central convex hull region 421 is provided with the extension convex hull region 422 on only the short side (as shown in fig. 4), or that the extension convex hull region 422 is provided on only the long side. Even if the extended convex hull region 422 is provided at the corner of the central convex hull region 421 having a rectangular shape, it is also possible.

As shown in fig. 1 and 2, alternatively, the edge of the central convex hull area 421 is provided near the inner peripheral wall of the voice coil 5. This can improve the structural strength of the dome 4 to a greater extent.

As shown in fig. 1, 3 and 4, in order to further improve the structural strength of the dome 4, optionally, a plurality of concave recesses 423 are provided on the upper convex hull 42. In this embodiment, the upper convex hull 42 has a concave portion 423 at the center thereof.

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 dome comprising a body having an upwardly projecting upper convex hull;

The voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil includes the body, the top surface of body is connected the ball top, go up the partial region of convex closure and stride across the top of body in order to construct the intercommunication the air current passageway of inboard space and outside space of body.

2. A micro-speaker as claimed in claim 1, wherein: the top surface of the body is connected with the bottom surface of the main body in an adhesive mode.

3. A micro-speaker as claimed in claim 1, wherein: the upper convex hull comprises a central convex hull region and a plurality of extension convex hull regions, the extension convex hull regions are arranged corresponding to the body, and the inner space of the extension convex hull regions is constructed into the airflow channel.

4. A micro-speaker as claimed in claim 3, wherein: the number of the extension convex hull areas is multiple, and the upper convex hull is of an axisymmetric structure.

5. A micro-speaker as claimed in claim 4, wherein: the whole central convex hull region is rectangular, and one side of the central convex hull region is provided with one or more extended convex hull regions.

6. A micro-speaker as claimed in claim 5, wherein: the long side and/or the short side of the central convex hull region are/is provided with the extended convex hull region.

7. A micro-speaker as claimed in claim 4, wherein: the whole of the central convex hull region is rectangular, and the corner of the central convex hull region is provided with the extension convex hull region.

8. A micro-speaker as claimed in claim 3, wherein: the edge of the central convex hull region is disposed adjacent to the inner peripheral wall of the voice coil.

9. A micro-speaker as claimed in claim 1, wherein: the upper convex hull is provided with a plurality of concave parts.

10. A micro-speaker as claimed in claim 1, wherein: the upper convex hull is of a stamping structure formed by stamping.