CN223182292U

CN223182292U - A miniature speaker

Info

Publication number: CN223182292U
Application number: CN202422018475.5U
Authority: CN
Inventors: 张俊利; 康恺轩
Original assignee: Shenzhen Weishi Acoustics Co Ltd
Current assignee: Shenzhen Weishi Acoustics Co Ltd
Priority date: 2024-08-19
Filing date: 2024-08-19
Publication date: 2025-08-01
Anticipated expiration: 2034-08-19

Abstract

The utility model discloses a miniature loudspeaker comprising a frame, a first vibration assembly, a magnetic circuit assembly, and multiple second vibration assemblies. The first vibration assembly is disposed on one side of the frame and includes a first diaphragm assembly and multiple first voice coils connected to the first diaphragm assembly. The magnetic circuit assembly is disposed on the other side of the frame and includes a yoke and multiple central magnetic structures disposed in hollow areas corresponding to the first voice coils. The yoke is provided with windows, and the central magnetic structures correspond to the windows. The central magnetic structure includes a magnetic steel structure, an upper washer, and a magnetic conductive plate, which is located at the window. The magnetic steel structure includes a central main magnet and a central secondary magnet, with a straight-line gap formed between the central main magnet and the central secondary magnet. The central main magnet connects the magnetic conductive plate and the upper washer, which is located above the central main magnet. The central secondary magnet connects the upper washer, the yoke, and the magnetic conductive plate. This miniature loudspeaker has excellent treble and bass effects.

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 the Chinese patent publication No. CN217721457U discloses a coaxial speaker which comprises a high-pitched unit and a low-pitched unit, and the high-pitched effect and the low-pitched effect of the coaxial speaker are found to have a further enhancement space in the actual use process.

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 existing miniature loudspeaker is poor in high-low sound effect.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the miniature loudspeaker comprises:

a basin stand;

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

The magnetic circuit assembly is arranged on the other side of the basin frame and comprises a yoke iron and a plurality of central magnetic structures arranged corresponding to the hollow area of the first voice coil, a window is arranged on the yoke iron, the central magnetic structures correspond to the window, the central magnetic structures comprise magnetic steel structures, a boss and a magnetic conduction plate, the magnetic conduction plate is positioned at the window, the magnetic steel structures comprise central main magnetic steel and central auxiliary magnetic steel, a linear gap is formed between the central main magnetic steel and the central auxiliary magnetic steel, the central main magnetic steel is connected with the boss, the boss is positioned above the central main magnetic steel, the central auxiliary magnetic steel is connected with the boss, the yoke iron and the magnetic conduction plate, the boss is provided with a first gap arranged corresponding to the linear gap, the boss is provided with a second gap arranged corresponding to the linear gap, and the linear gap is respectively communicated with the first gap and the second gap to form a vertical magnetic gap;

The second vibration components comprise a second vibrating diaphragm component and two vertical voice coils connected to the second vibrating diaphragm component, the vertical voice coils extend into the vertical magnetic gaps, and the second vibrating diaphragm component is connected with the magnetic conduction plate.

In an embodiment, the edge of the magnetic conductive plate is provided with a turned edge which is bent towards a direction away from the first vibration component, and the outer edge of the second vibration membrane component is connected with the turned edge.

In an embodiment, at least a partial area of an upper side of the vertical voice coil is located in the second slit, and at least a partial area of a lower side of the vertical voice coil is located in the first slit.

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

In one embodiment, two adjacent first voice coils are adhesively fixed.

In an embodiment, the magnetic circuit assembly further comprises a side magnetic structure, the side magnetic structure is connected with the basin stand and the yoke, and a partial area of a first magnetic gap for the first voice coil to move is formed between the center magnetic structure and the side magnetic structure.

In one embodiment, the two vertical voice coils in the second vibration assembly are disposed opposite to each other.

In one embodiment, the number of the first voice coils is two.

The micro-speaker has the advantages that the micro-speaker is novel in structure, the micro-speaker is provided with the plurality of high-pitched units and the plurality of low-pitched units, the plurality of low-pitched units share the first vibrating diaphragm assembly, 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, the high-pitched units are arranged corresponding to the inner space of the voice coil of the low-pitched unit, the inner space of the micro-speaker is fully utilized, the micro-speaker is more compact in structure and smaller in size, the micro-speaker can be well adapted to light and thin electronic equipment, in addition, the occupied space of the vertical magnetic gap is small, the total volume of the central magnetic structure can be designed to be larger, and therefore the micro-speaker can achieve better performance on the premise that the micro-speaker can keep small size.

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

Reference numerals illustrate:

1. A basin stand;

2. The first vibration assembly, 21, the first vibrating diaphragm assembly, 22, the first voice coil;

3. Magnetic circuit assembly, 31, yoke, 32, side magnetic structure, 33, central magnetic structure, 331, central main magnetic steel, 332, central auxiliary magnetic steel, 333, upper washer, 3331, second gap, 334, magnetic conduction plate, 3341, first gap, 3342, flange, 335, straight gap;

4. The second vibration assembly, 41, the second vibrating diaphragm assembly and 42, the vertical 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 correspondingly changed.

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, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between 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 and 2, a micro-speaker according to an embodiment of the utility model includes a frame 1, a first vibration assembly 2, a magnetic circuit assembly 3, and a plurality of second vibration assemblies 4, wherein the first vibration assembly 2 is disposed at one side of the frame 1, and the first vibration assembly 2 includes a first diaphragm assembly 21 and a plurality of first voice coils 22 connected to the first diaphragm assembly 21; the magnetic circuit assembly 3 is arranged on the other side of the basin frame 1, the magnetic circuit assembly 3 comprises a yoke 31, a side magnetic structure 32 and a plurality of central magnetic structures 33 which are arranged corresponding to the hollow area of the first voice coil 22, a window is arranged on the yoke 31, the central magnetic structures 33 correspond to the window, the central magnetic structures 33 comprise magnetic steel structures, an upper washer 333 and a magnetic conduction plate 334, the magnetic conduction plate 334 is arranged at the window, the magnetic steel structures comprise a central main magnetic steel 331 and a central auxiliary magnetic steel 332, a first-shaped gap 335 is formed between the central main magnetic steel 331 and the central auxiliary magnetic steel 332, the central main magnetic steel 331 is connected with the upper washer 333, the upper washer 333 is arranged above the central main magnetic steel 331, the central auxiliary magnetic steel 332 is connected with the upper washer 333, the yoke 31 and the magnetic conduction plate 334, the magnetic conduction plate 334 is provided with a first gap 3341 which is arranged corresponding to the first-shaped gap 335, the upper washer 333 is provided with a second gap 335 which is arranged corresponding to the first gap 335, the second gap 3331 is arranged in the vertical direction, the upper washer 333 is connected with the second magnetic coil assembly 4 and the second vibration diaphragm assembly 4 vertically corresponds to the second gap 3342, the second vibration diaphragm assembly 4 is vertically arranged between the two vertical vibration assemblies and the two vibration diaphragm assemblies 41 are respectively, the vertical voice coil 42 extends into the vertical magnetic gap, the second diaphragm assembly 41 is connected to the magnetic conductive plate 334, and it is easy to understand that the second vibration assembly 4 corresponds to the central magnetic structure 33 one by one.

The side magnetic structure 32 connects the frame 1 and the yoke 31, a partial region of the first magnetic gap for the first voice coil 22 to move is formed between the center magnetic structure 33 and the side magnetic structure 32, and another partial region of the first magnetic gap for the first voice coil 22 to move is formed between two adjacent center magnetic structures 33.

The edge of the magnetic conduction board 334 has a flange 3342 that bends towards the direction away from the first vibration component 2, the outer edge of the second vibration film component 41 is connected with the flange 3342, and the flange 3342 can reserve enough vibration space for the second vibration component 4, so as to avoid the collision between the second vibration film and the magnetic conduction board 334 when the second vibration component 4 is working.

At least a partial area of the upper side of the vertical voice coil 42 is located in the second slit 3331, and at least a partial area of the lower side of the vertical voice coil 42 is located in the first slit 3341. For the second vibration assembly 4, the upper washer 333 and the magnetic induction lines at the magnetic conduction plate 334 are most dense, and the upper side and the lower side of the vertical voice coil 42 are arranged for the two areas, so that the vertical voice coil 42 can obtain larger driving force.

The two adjacent first voice coils 22 are in contact with each other, and preferably the two adjacent first voice coils 22 are bonded and fixed, so that the structural stability of the first vibration assembly 2 can be improved, the performance of the bass unit can be improved, and the two adjacent first voice coils 22 can be bonded and fixed in a plurality of ways, such as bonding by using glue, bonding by using double-sided glue, or bonding by using a self-adhesive layer on the surface of a wire material wound around the first voice coils 22.

The number of the first voice coils 22, the number of the central magnetic structures 33 and the number of the second vibration components 4 are equal, and can be set as required in practical products, in this embodiment, the number of the first voice coils 22 is two, that is, the micro-speaker of this embodiment has two tweeters.

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. A micro speaker is characterized by comprising

A basin stand;

2. The micro-speaker of claim 1, wherein the edge of the magnetic conductive plate has a flange bent away from the first vibration member, and the outer edge of the second vibration member is connected to the flange.

3. The micro-speaker of claim 1, wherein at least a portion of an upper side of the vertical voice coil is located in the second slit and at least a portion of a lower side of the vertical voice coil is located in the first slit.

4. The micro-speaker of claim 1, wherein adjacent ones of the first voice coils are in contact with each other.

5. The micro-speaker of claim 4, wherein two adjacent first voice coils are bonded and fixed.

6. The micro-speaker of claim 1, wherein the magnetic circuit assembly further comprises a side magnetic structure, the side magnetic structure connects the frame and the yoke, and a partial region of a first magnetic gap for the first voice coil to move is formed between the center magnetic structure and the side magnetic structure.

7. The micro-speaker of claim 1, wherein the two vertical voice coils in the second vibration assembly are disposed opposite each other.

8. The micro-speaker of claim 1, wherein the number of the first voice coils is two.