CN220307371U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a micro loudspeaker, which comprises a body, a first vibration assembly and a plurality of second vibration assemblies, wherein the first vibration assembly is arranged on one side of the body and comprises a first vibrating diaphragm assembly and a plurality of first voice coils connected to the first vibrating diaphragm assembly; the second vibration component is arranged on the other opposite side of the body and corresponds to the inner space of the first voice coil; the second vibration components are in one-to-one correspondence with the first voice coils. The micro-speaker is novel in structure, has a plurality of high-pitched units and a plurality of low-pitched units, and the first vibrating diaphragm component is shared by the low-pitched units, so that the sensitivity, the high-pitched effect and the low-pitched effect of the micro-speaker are improved, the acoustic performance of the micro-speaker is improved, the high-pitched units are arranged corresponding to the inner space of the voice coil of the low-pitched units, the inner space of the micro-speaker is fully utilized, the micro-speaker is more compact in structure and smaller in size, and the micro-speaker can be well adapted to light and thin electronic equipment.

Description

Miniature loudspeaker

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, the requirements of miniature electroacoustic devices applied thereto are also increasing.

The micro-speaker generally adopts high and low frequency division to enhance sound effect, and chinese patent publication No. CN217721457U discloses a coaxial speaker, which comprises a high-pitched unit and a low-pitched unit, and in the actual use process, it is found that there is room for further enhancement of both the high-pitched effect and the low-pitched effect.

Disclosure of Invention

The utility model mainly aims to provide a miniature loudspeaker with a novel structure, and aims to solve the problem that the existing miniature loudspeaker is poor in high-low sound effect.

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

a body;

the first vibration assembly is arranged on one side of the body and comprises a first vibrating diaphragm assembly and a plurality of first voice coils connected to the first vibrating diaphragm assembly;

the second vibration assemblies are arranged on the other side opposite to the body, and the second vibration assemblies are arranged corresponding to the inner space of the first voice coil; the second vibration components are in one-to-one correspondence with the first voice coils.

In one embodiment, two adjacent first voice coils are in contact with each other.

In an embodiment, two adjacent first voice coils are fixedly connected.

In an embodiment, the body includes a basin frame and connects the magnetic circuit subassembly of basin frame, the magnetic circuit subassembly has the confession first magnetic gap of first voice coil loudspeaker voice coil activity, the magnetic circuit subassembly includes the yoke and locates respectively limit magnetic structure and multiunit center magnetic structure on the yoke, center magnetic structure with first voice coil loudspeaker voice coil one-to-one sets up, limit magnetic structure with form between the center magnetic structure a part region in first magnetic gap, adjacent two form between the center magnetic structure another part region in first magnetic gap.

In an embodiment, the central magnetic structure comprises a central washer, a central magnetic steel and a plurality of outer edge magnetic steels surrounding the central magnetic steel, the bottom surface of the central washer is respectively connected with the central magnetic steel and the outer edge magnetic steels, the bottom surface of the outer edge magnetic steel is connected with the yoke, the yoke is provided with a window corresponding to the central magnetic structure, the second vibration assembly is arranged at the window, the second vibration assembly comprises a second vibration assembly and a second voice coil connected to the second vibration assembly, the second vibration assembly is connected with the magnetic circuit assembly, and a second magnetic gap for the second voice coil to move is formed between the central magnetic steel and the outer edge magnetic steels.

In an embodiment, the central magnetic structure further comprises a central washer, and the central washer is arranged on the bottom surface of the central magnetic steel.

In an embodiment, the central magnetic structure further includes a support frame, the support frame is disposed at the window, the support frame is connected with the yoke and/or the outer edge magnetic steel, and the outer edge of the second diaphragm assembly is connected with the support frame.

In one embodiment, the scaffold is made of ferromagnetic material.

In one embodiment, the support frame portion is located within the fenestration.

In one embodiment, the support frame is a ring frame structure with an L-shaped section.

The utility model has the beneficial effects that: the micro-speaker is novel in structure, has a plurality of high-pitched units and a plurality of low-pitched units, and the first vibrating diaphragm component is shared by the low-pitched units, so that the sensitivity, the high-pitched effect and the low-pitched effect of the micro-speaker are effectively improved, the acoustic performance of the micro-speaker is improved, the use experience of a user is enhanced, in addition, the high-pitched units are arranged corresponding to the inner space of the voice coil of the low-pitched units, the inner space of the micro-speaker is fully utilized, the micro-speaker is more compact in structure and smaller in size, and the micro-speaker can be well adapted to light and thin electronic equipment.

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.

Reference numerals illustrate:

1. a body; 11. a basin stand; 12. a magnetic circuit assembly; 121. a first magnetic gap; 122. a second magnetic gap; 123. a yoke; 124. a side magnetic structure; 125. a central magnetic structure; 1251. a central washer; 1252. a central magnetic steel; 1253. outer edge magnetic steel; 1254. a central washer; 1255. a support frame;

2. a first vibration assembly; 21. a first diaphragm assembly; 22. a first voice coil;

3. a second vibration assembly; 31. a second diaphragm assembly; 32. and a second 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, a first embodiment of the present utility model is as follows: a micro loudspeaker can be applied to electronic facilities such as mobile phones, tablet computers, smart watches, game handles, wearable devices and the like.

The micro-speaker comprises a body 1, wherein a first vibration component 2 is arranged on one side of the body 1, and the first vibration component 2 comprises a first vibrating diaphragm component 21 and a plurality of first voice coils 22 connected to the first vibrating diaphragm component 21; a plurality of second vibration assemblies 3 are arranged on the other side opposite to the body 1, and the second vibration assemblies 3 are arranged corresponding to the inner space of the first voice coil 22; the second vibration components 3 are in one-to-one correspondence with the first voice coils 22. The first vibration component 2 is a vibration component of a bass unit, and the second vibration component 3 is a vibration component of a treble unit.

In order to improve the split vibration phenomenon of the first vibration assembly 2, it is preferable that adjacent two of the first voice coils 22 are in contact with each other. It is further preferable that two adjacent first voice coils 22 are fixedly connected, specifically, adjacent outer wall surfaces of two adjacent first voice coils 22 are in contact with each other and fixedly connected, so that structural stability of the first vibration assembly 2 can be effectively improved, and risk of the first voice coils 22 falling off the coils is reduced. There are many specific means for achieving the mutual connection and fixation of the adjacent two first voice coils 22, such as glue connection, connection by double-sided adhesive paper, connection by self-adhesive layer of the enamel wire itself which winds the first voice coils 22, etc.

Specifically, the body 1 includes a frame 11 and a magnetic circuit assembly 12 connected to the frame 11, the magnetic circuit assembly 12 has a first magnetic gap 121 for the first voice coil 22 to move, the magnetic circuit assembly 12 includes a yoke 123, and a plurality of sets of side magnetic structures 124 and a plurality of sets of center magnetic structures 125 respectively disposed on the yoke 123, the center magnetic structures 125 are disposed in one-to-one correspondence with the first voice coil 22, when the body 1 is seen through in a top view, the first voice coil 22 surrounds the center magnetic structures 125, a part of the first magnetic gap 121 is formed between the side magnetic structures 124 and the center magnetic structures 125, and another part of the first magnetic gap 121 is formed between two adjacent center magnetic structures 125.

The central magnetic structure 125 includes a central washer 1251, a central magnetic steel 1252, and a plurality of outer edge magnetic steels 1253 surrounding the central magnetic steel 1252, the bottom surface of the central washer 1251 is respectively connected with the central magnetic steel 1252 and the outer edge magnetic steels 1253, the bottom surface of the outer edge magnetic steels 1253 is connected with the yoke 123, the yoke 123 has a window corresponding to the central magnetic structure 125, the second vibration assembly 3 is arranged at the window, the second vibration assembly 3 includes a second vibration film assembly 31 and a second voice coil 32 connected to the second vibration film assembly 31, the second vibration film assembly 31 is connected with the magnetic circuit assembly 12, and a second magnetic gap 122 for the second voice coil 32 to move is formed between the central magnetic steel 1252 and the outer edge magnetic steels 1253.

Preferably, the central magnetic structure 125 further includes a central washer 1254, and the central washer 1254 is disposed on the bottom surface of the central magnetic steel 1252.

Optionally, the central magnetic structure 125 further includes a support frame 1255, the support frame 1255 is disposed at the windowed position, the support frame 1255 is connected to the yoke 123 and/or the outer edge magnetic steel 1253, the outer edge of the second diaphragm assembly 31 is connected to the support frame 1255, and the support frame 1255 can increase the distance between the second diaphragm assembly 31 and the magnetic circuit assembly 12, so that the risk that the second diaphragm assembly 31 collides with the magnetic circuit assembly 12 when the second diaphragm assembly 3 works is reduced, which is beneficial to ensuring the acoustic performance of the micro-speaker. In this embodiment, the support 1255 has an L-shaped cross-section and a ring frame structure.

To improve the utilization efficiency of the central magnetic structure 125, the support frame 1255 is preferably made of a ferromagnetic material, such as iron, an alloy thereof, and the like.

The portion of the support 1255 is located in the window, so that the cross-sectional thickness of the micro-speaker can be reduced, and the micro-speaker can be made thinner. Preferably, the supporting frame 1255 made of ferromagnetic material contacts the bottom surface of the outer edge magnetic steel 1253.

In this embodiment, the number of the first voice coils 22 is two, and in other embodiments, the number of the first voice coils 22 may be greater, and in this case, the number of the first voice coils 22 may be one or more rows.

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. A miniature loudspeaker, characterized by: comprising

A body;

the first vibration assembly is arranged on one side of the body and comprises a first vibrating diaphragm assembly and a plurality of first voice coils connected to the first vibrating diaphragm assembly;

the second vibration assemblies are arranged on the other side opposite to the body, and the second vibration assemblies are arranged corresponding to the inner space of the first voice coil; the second vibration components are in one-to-one correspondence with the first voice coils.

2. A micro-speaker as claimed in claim 1, wherein: adjacent two of the first voice coils are in contact with each other.

3. A micro-speaker as claimed in claim 2, wherein: and two adjacent first voice coils are fixedly connected.

4. A micro-speaker as claimed in claim 1, wherein: the body includes basin frame and connects the magnetic circuit subassembly of basin frame, magnetic circuit subassembly has the confession the first magnetic gap of first voice coil loudspeaker voice coil activity, magnetic circuit subassembly includes the yoke and locates respectively limit magnetic structure and multiunit center magnetic structure on the yoke, center magnetic structure with first voice coil loudspeaker voice coil one-to-one sets up, limit magnetic structure with form between the center magnetic structure a part region in first magnetic gap, adjacent two form between the center magnetic structure another part region in first magnetic gap.

5. A micro-speaker as claimed in claim 4, wherein: the center magnetic structure comprises a center washer, center magnetic steel and a plurality of outer edge magnetic steel which surround the center magnetic steel, the bottom surface of the center washer is respectively connected with the center magnetic steel and the outer edge magnetic steel, the bottom surface of the outer edge magnetic steel is connected with the yoke, the yoke is provided with a window which corresponds to the center magnetic structure, the second vibration assembly is arranged at the window, the second vibration assembly comprises a second vibration film assembly and a second voice coil which is connected to the second vibration film assembly, the second vibration film assembly is connected with the magnetic circuit assembly, and a second magnetic gap for the second voice coil to move is formed between the center magnetic steel and the outer edge magnetic steel.

6. A micro-speaker as claimed in claim 5, wherein: the central magnetic structure further comprises a central washer, and the central washer is arranged on the bottom surface of the central magnetic steel.

7. A micro-speaker as claimed in claim 5, wherein: the center magnetic structure further comprises a support frame, the support frame is arranged at the window opening position, the support frame is connected with the yoke iron and/or the outer edge magnetic steel, and the outer edge of the second vibrating diaphragm assembly is connected with the support frame.

8. A micro-speaker as claimed in claim 7, wherein: the support frame is made of ferromagnetic materials.

9. A micro-speaker as claimed in claim 7, wherein: the support frame portion is positioned within the fenestration.

10. A micro-speaker as claimed in claim 7, wherein: the support frame is of a ring frame structure with an L-shaped section.