WO2024046059A1

WO2024046059A1 - Sound production apparatus and electronic device

Info

Publication number: WO2024046059A1
Application number: PCT/CN2023/111830
Authority: WO
Inventors: 刘阳; 秦仁轩; 赵文畅
Original assignee: 华为技术有限公司
Priority date: 2022-08-30
Filing date: 2023-08-08
Publication date: 2024-03-07
Also published as: CN117676440A

Abstract

A sound production apparatus (100) and an electronic device. The sound production apparatus (100) comprises a housing assembly (110). At least one vibration module (120) is provided in an inner cavity structure defined by the housing assembly (110). Each vibration module (120) comprises a vibration assembly (121) and a magnetic assembly (122). In a first direction, the magnetic assembly (122) passes through the vibration assembly (121). The vibration assembly (121) comprises a plurality of voice coils (1212) and a plurality of layers of diaphragms (1211) arranged at intervals in the first direction, and each layer of diaphragm (1211) is connected to at least one voice coil (1212). The magnetic assembly (122) comprises a plurality of magnetic members (1221), at least two of the plurality of magnetic members (1221) are stacked in the first direction, and at least one layer of diaphragm (1211) is located on the outer peripheral sides of the at least two magnetic members (1221) that are stacked. The at least two magnetic members (1221) that are stacked pass through at least one voice coil (1212), and in the first direction, the polarities of two adjacent magnetic members (1221) that are stacked are opposite. The first direction is the thickness direction of the sound production apparatus (100). The sound production apparatus (100) has a small size, large amplitude, and good sound quality, and is beneficial to miniaturization development.

Description

A sound-generating device and electronic equipment

This application claims priority to the Chinese patent application filed with the China Patent Office on August 30, 2022, with the application number 202211049924.1 and the application title "A sound-generating device and electronic equipment", the entire content of which is incorporated into this application by reference. .

Technical field

Embodiments of the present application relate to the technical field of electronic equipment, and in particular to a sound-generating device and electronic equipment.

Background technique

A microspeaker is a transducer device that converts electrical signals into acoustic signals. It emits sound by vibrating the diaphragm and resonating with the surrounding air. With the continuous development of power electronics technology, users have higher and higher requirements for product sound quality, which makes improving efficiency and miniaturization the future development direction of micro speakers.

In some technologies, in order to meet the market demand for improved acoustic performance of micro-speakers, performance is generally improved by increasing the vibration area of the product to increase the operating amplitude. However, the increase in vibration area will lead to an increase in product size, which is in conflict with the miniaturization development of micro-speakers and affects the application of the whole machine. Further increase in operating amplitude will bring about various quality problems.

Contents of the invention

Embodiments of the present application provide a sound-generating device and electronic equipment, which are small in size and large in amplitude, which are conducive to improving sound quality and promoting the development of miniaturization of the sound-generating device.

Embodiments of the present application provide a sound-generating device. The sound-generating device includes a shell component, and at least one vibration module is disposed in an inner cavity structure surrounded by the shell component; wherein each of the vibration modules includes a vibration component. and a magnetic component. In the first direction, the magnetic component penetrates the vibration component; the vibration component includes a plurality of voice coils and a multi-layer diaphragm spaced apart along the first direction. Each layer of the vibration component The membrane is connected to at least one of the voice coils; the magnetic assembly includes a plurality of magnetic pieces, at least two of the plurality of magnetic pieces are stacked in the first direction, and at least one layer of the The diaphragm is located on the outer peripheral side of the at least two stacked magnetic components; and the at least two stacked magnetic components are inserted into at least one of the voice coils, and in the first direction, the stacked The polarities of the two adjacent magnetic components are opposite; the first direction is the thickness direction of the sound-generating device.

In the sound-generating device provided by the embodiment of the present application, the vibration component is designed as a structure including multiple voice coils and multi-layer diaphragms spaced apart along the thickness direction of the sound-generating device, so that when the vibration directions of the diaphragms are opposite, It can reduce the vibration transmission of the vibration module to the outside world, thereby playing the role of shock absorption; by arranging multiple voice coils and multi-layer diaphragms spaced along the first direction, and each layer of diaphragm is connected to at least one voice coil connection, so that the voice coils can be nested with each other, increasing the vibration space of the diaphragm to ensure the maximum amplitude of the diaphragm, and also reducing the height of the sound-generating device in the thickness direction, thereby reducing the volume of the sound-producing device; by combining multiple At least two of the magnetic components are stacked along the thickness direction of the sound-generating device, and the polarities of the two adjacent magnetic components in the thickness direction of the sound-producing device are opposite. This can increase the magnetic field intensity at the position of the voice coil, and thereby increase the magnetic field intensity at the position of the voice coil. Improve the working efficiency of sound-generating devices.

In an optional implementation, there is a first gap between the diaphragm close to the inner bottom wall of the housing assembly and the inner bottom wall of the housing assembly; There is a second gap between them; there is a third gap between the diaphragm close to the inner top wall of the housing assembly and the inner top wall of the housing assembly; the first gap, the second gap and the At least one of the third gaps is a sound outlet channel of the sound emitting device; a sound outlet is provided on a part of the shell wall of the housing assembly corresponding to the sound outlet channel.

In an optional implementation, when the sound outlet is located in the housing wall of the housing assembly corresponding to the first gap or the third gap, the sound output mode of the sound-emitting device is: Top-out sound; when the sound-output hole is located in the housing wall of the housing assembly corresponding to the second gap, the sound-outputting mode of the sound-generating device is middle sound-outputting.

By arranging the first gap, the second gap and the third gap, both sides of the diaphragm can have enough vibration space, thereby increasing the amplitude of the diaphragm, thereby improving the properties and thereby improving the sound quality of the sound-generating device. In addition, the first gap, the second gap and the third gap can all be used as sound output channels, which can improve the design flexibility of the sound output position of the sound generating device, that is, two sound output methods, top sound output and middle sound output, can be used , that is to say, the appropriate sound position can be selected according to the position of the sound transmission channel of the electronic device, thereby reducing the sound signal. The distance from the sound hole to the sound transmission channel simplifies the sound environment, thereby reducing sound quality loss. In addition, when the sound outlet is located in the shell wall of the shell component corresponding to the second gap, that is, when the sound output mode of the middle sound is adopted, the sound outlet of the second gap can be directly connected with the sound transmission channel during use. Connected, thereby reducing the distance between the sound hole and the sound transmission channel, improving the sound environment of electronic equipment, improving high-frequency characteristics, and thus improving sound quality.

In an optional implementation, the vibration component includes two layers of diaphragms, namely a first diaphragm and a second diaphragm; wherein the first diaphragm and the second diaphragm are arranged along The first diaphragm is arranged at intervals in the first direction; the first diaphragm is arranged close to the inner bottom wall of the housing assembly, and the second diaphragm is arranged close to the inner top wall of the housing assembly.

By arranging two layers of diaphragms, compared to the technical solution of arranging one diaphragm in the related art, the effective vibration area of the diaphragm on the sound-generating device can be increased without increasing the volume of the sound-generating device, thereby improving the electrical signal and sound signal conversion rate. By arranging two layers of diaphragms at intervals along the thickness direction of the sound-generating device, when the vibration directions of the two diaphragms are opposite, the vibration transmission of the sound-generating device to the outside world can be reduced.

In an optional implementation, the vibration component includes two voice coils, namely a first voice coil and a second voice coil; wherein, the orthographic projection of the first voice coil in the first direction , at least partially coincident with the orthographic projection of the second voice coil in the first direction.

By arranging two voice coils and setting the orthographic projection of the first voice coil in the first direction to at least partially coincide with the orthographic projection of the second voice coil in the first direction, the first voice coil and the third voice coil can be made The two voice coils can be nested in each other, which can reduce the height of the sound-generating device in the thickness direction, thereby facilitating the miniaturization of the sound-generating device. In addition, while the first voice coil and the second voice coil are nested in each other to reduce the volume of the sound-generating device, the heights of the first gap, the second gap and the third gap in the z direction are changed through the connecting piece, so that each There is sufficient vibration space on both sides of the diaphragm. The larger the vibration space of the diaphragm, the greater the vibration stroke of the diaphragm, which increases the maximum amplitude of the diaphragm, thereby increasing the conversion rate of low-frequency signals.

In an optional implementation, the first diaphragm is connected to the first voice coil, the second diaphragm is connected to the second voice coil; a plurality of the magnetic components of the magnetic component components are stacked in the first direction, and the plurality of stacked magnetic components are inserted into the first voice coil and the second voice coil; the plurality of stacked magnetic components are The two adjacent magnetic pieces have opposite polarities.

In an optional implementation, the number of the magnetic components is three; wherein the three magnetic components are stacked in the first direction, and the three magnetic components are stacked passed through the first voice coil and the second voice coil.

By stacking all the magnetic parts of the magnetic assembly along the thickness direction of the sound-generating device, the magnetic field strength of the magnetic assembly can be greatly increased, thereby increasing the magnetic field strength within the voice coil, thereby improving the working efficiency of the sound-generating device.

In an optional implementation, the central axes of the first voice coil and the second voice coil coincide with each other; the central axis of the magnetic component and the first voice coil and the second voice coil The central axes coincide with each other.

In an optional implementation, the first diaphragm is an integral piece, and the first diaphragm is surrounding the outside of the first voice coil; or, the first diaphragm includes a plurality of third diaphragms. A sub-diaphragm, a plurality of first sub-diaphragms are arranged outside the voice coil, and two adjacent first sub-diaphragms are connected to each other.

By arranging the first diaphragm as an integral piece, the shape of the diaphragm can be simplified, and the vibration consistency of the diaphragm can be ensured, thereby improving the working efficiency of the sound-generating device. By arranging the first diaphragm to have a structure including a plurality of first sub-diaphragms, the design flexibility of the first diaphragm can be improved.

In an optional implementation, the second diaphragm is an integral piece, and the second diaphragm is surrounding the outside of the second voice coil; or, the second diaphragm includes a plurality of third diaphragms. Two sub-diaphragms, a plurality of second sub-diaphragms are arranged outside the voice coil, and two adjacent second sub-diaphragms are connected to each other.

By arranging the second diaphragm as an integral piece, the shape of the diaphragm can be simplified, and the vibration consistency of the diaphragm can be ensured, thereby improving the working efficiency of the sound-generating device. By arranging the second diaphragm to have a structure including a plurality of second sub-diaphragms, the design flexibility of the first diaphragm can be improved.

In an optional implementation manner, the number of the vibration module is one; wherein the central axis of the vibration module and the central axis of the housing assembly coincide with each other.

In an optional implementation, the number of the vibration module groups is multiple; wherein, in the vertical direction of the second direction, the first diaphragms of the multiple vibration module groups are all located on the same plane. , the second diaphragms of the plurality of vibration modules are all located on the same plane; the plurality of vibration modules are distributed in an array in the second direction, and the two adjacent vibration modules have The first diaphragms are connected to each other, and the second diaphragms of two adjacent vibration modules are connected to each other; the second direction is the vertical direction of the thickness direction of the sound-generating device.

By setting up multiple vibration modules, the driving force of the diaphragm can be greater, so that the diaphragm can vibrate more fully, thus improving the generation efficiency. efficiency of the acoustic device. In addition, multiple vibration modules are installed to achieve better vibration balance and reduce the impact of polarization on acoustic performance.

In an optional implementation, the plurality of voice coils of the vibration component include at least one third voice coil and at least one fourth voice coil; wherein at least one of the third voice coils is in the The third voice coils are spaced apart in the second direction, and each of the third voice coils is connected to the first diaphragm. At least one fourth voice coil is spaced apart in the second direction, and each of the third voice coils is spaced apart in the second direction. The four voice coils are all connected to the second diaphragm; the orthographic projections of the third voice coil and the fourth voice coil are separated from each other in the first direction, and the second direction is the thickness of the sound-generating device. The vertical direction of the direction.

In an optional implementation manner, the number of the magnetic components is at least three, and two of the at least three magnetic components are arranged in a stack; the two magnetic components in the stack are arranged through is provided in the third voice coil; the remaining magnetic components among at least three magnetic components are provided in the fourth voice coil.

In an optional implementation, the projections of the magnetic component located in the third voice coil and the magnetic component located in the fourth voice coil in the first direction are separated from each other.

In an optional implementation, the third voice coil is close to the inner bottom wall of the housing assembly, and the fourth voice coil is close to the inner top wall of the housing assembly; wherein, the third voice coil is located near the inner bottom wall of the housing assembly. One end of the magnetic component in the third voice coil close to the inner bottom wall is connected to the inner bottom wall; one end of the magnetic component located in the fourth voice coil close to the inner top wall is connected to the inner bottom wall. Top wall connection.

In an optional implementation, there are five magnetic components; wherein, two stacked magnetic components are provided in each third voice coil, and the magnetism of the two magnetic components is opposite; One of the magnetic parts is disposed inside the fourth voice coil.

In an optional implementation, there are two third voice coils and one fourth voice coil; wherein, the orthographic projection of the fourth voice coil in the first direction is located on both sides. between the orthographic projections of the third voice coil in the first direction.

In an optional implementation, there is one third voice coil and two fourth voice coils; wherein, the orthographic projection of the third voice coil in the first direction is located on both sides. between the orthographic projections of the fourth voice coil in the first direction.

In an optional implementation, there are four magnetic parts; wherein, two stacked magnetic parts are provided in the third voice coil, and the magnetism of the two magnetic parts is opposite; each One of the magnetic parts is disposed inside the fourth voice coil.

In an optional implementation manner, the sound-generating device has a symmetrical structure or a centrally symmetrical structure with the central axis of the housing assembly as an axis.

In an optional implementation manner, the third voice coil is a low-frequency vibrating voice coil, and the fourth voice coil is a high-frequency vibrating voice coil.

By arranging two layers of diaphragms at intervals along the z-direction, setting the third voice coil as a low-frequency vibrating voice coil, and the fourth voice coil as a high-frequency vibrating sound group, the full-frequency response of the sound-generating device can be improved. This is relatively Since the high-frequency sound-generating device and the low-frequency sound-generating device are arranged separately, the height of the entire sound-generating device can be reduced and the cost can be reduced. In addition, when the vibration directions of the diaphragms spaced apart along the z-direction are opposite, the external vibration of the entire sound-generating device can be reduced, making the sound-generating device more stable.

In an optional implementation, the magnetic assembly further includes a magnetic conductive plate, and the magnetic conductive plates are provided at both ends of each magnetic component.

By arranging a magnetic conductive plate between the magnetic components, the air gap between the magnetic components can be reduced, thereby increasing the magnetic flux of the magnetic component, strengthening the magnetic field strength of the magnetic component, and thereby improving the conversion efficiency between the electrical signal and the sound signal of the sound-generating device. . In addition, the magnetic field directions of two adjacent magnetic components are opposite, which can increase the magnetic field strength of the magnetic component, thereby improving the conversion efficiency between electrical signals and sound signals.

In an optional implementation, the vibration component further includes a plurality of connecting pieces; wherein the connecting pieces include a first connecting part, a second connecting part and a third connecting part, and the three connecting parts are arranged on Between the first connecting part and the second connecting part; one end of the third connecting part is fixedly connected to the first connecting part, and the other end extends in a direction close to the second connecting part and is connected with the first connecting part. The second connecting part is fixedly connected; in the first direction, there is a gap between the first connecting part and the second connecting part.

In an optional implementation, each layer of the diaphragm and the voice coil are connected through the connecting piece; wherein one of the first connecting part and the second connecting part is connected to the voice coil. One end of the voice coil is connected, and the other one of the first connection part and the second connection part is connected to the diaphragm.

By arranging a connecting piece to connect the diaphragm and the voice coil, the heights of the first gap, the second gap and the third gap in the thickness direction of the sound-generating device can be changed by changing the shape of the connecting piece, so that each diaphragm can be adjusted The size of the vibration space on both sides allows the diaphragm to make full use of the space along the thickness direction of the sound-generating device, so that each layer of diaphragm has a larger vibration space, so that each diaphragm can achieve its own ideal performance when working. maximum amplitude, thereby improving the working efficiency of the sound-generating device.

In an optional implementation, the vibration component further includes a support member; wherein the support member is surrounded by the magnetic component. On the outside, one end of the diaphragm close to the support member is fixedly connected to the support member; diaphragms located in different layers are connected to the support member at different locations.

By arranging the support member, the support member can support the end of the first diaphragm and the second diaphragm close to the magnetic assembly, so that the end of the first diaphragm and the second diaphragm close to the magnetic assembly also has a second gap, ensuring the first The vibration space of the diaphragm and the second diaphragm can also increase the effective vibration area of the first diaphragm and the second diaphragm, thereby improving the conversion efficiency of electrical signals and sound signals.

In an optional implementation, the housing assembly includes a first housing, a second housing and a third housing; wherein, in the first direction, the third housing is disposed at between the first housing and the second housing, the height of the third housing is greater than zero, and part of the outer side of the diaphragm is disposed between the first housing and the third housing , part of the outer side of the diaphragm is disposed between the second housing and the third housing.

By providing the third housing, the diaphragm can be easily fixed on the housing assembly, and by changing the height of the third housing, the gap between the diaphragms can be changed, thereby increasing the vibration space of the diaphragm, thereby improving the sound-generating device. work efficiency.

In an optional implementation, the magnetic component is a magnet.

A second aspect of the embodiments of the present application provides an electronic device, which at least includes the above sound-generating device.

By arranging the above-mentioned sound-generating device in an electronic device, the sound-generating device has the characteristics of small size and high working efficiency, which is beneficial to improving the sound quality of the electronic device and conducive to the development of miniaturization of the electronic device.

In an optional implementation, the electronic device includes a housing, the housing is arranged outside the sound-generating device, a sound transmission channel is provided on the housing, and the sound-generating device is arranged on the On one side of the sound transmission channel, one end of the sound transmission channel close to the sound generating device is flush with the sound outlet of the sound generating device.

By arranging the sound transmission channel of the electronic device flush with the sound outlet of the sound-generating device, the sound emitted from the sound-generating device can directly enter the sound transmission channel. Compared with the related art, this can reduce the noise of the sound-generating device. The distance between the sound hole and the sound transmission channel improves the sound environment of electronic equipment, improves high-frequency characteristics, and thereby improves sound quality.

Description of drawings

Figure 1 is a schematic structural diagram of a sound-generating device;

Figure 2 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 3 is a schematic diagram of an explosion structure of Figure 2;

Figure 4 is a schematic diagram of another explosion structure of Figure 2;

Figure 5 is a schematic cross-sectional structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of a first connecting piece of a sound-generating device provided by an embodiment of the present application;

Figure 7 is another schematic cross-sectional structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of a second connecting piece of a sound-generating device provided by an embodiment of the present application;

Figure 9 is another schematic cross-sectional structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of a support member of a sound-generating device provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of the first diaphragm of a sound-generating device provided by an embodiment of the present application;

Figure 12 is a schematic structural diagram of a second diaphragm of a sound-generating device provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of a magnetic component of a sound-generating device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of the direction of magnetic field lines in a magnetic component of a sound-generating device provided by an embodiment of the present application;

Figure 15 is a schematic diagram showing the distribution of diaphragms and magnetic components of a sound-generating device provided by an embodiment of the present application;

Figure 16 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 17 is a schematic diagram of the distribution of diaphragms and magnetic components of a sound-generating device provided by an embodiment of the present application;

Figure 18 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 19 is a schematic diagram of the distribution of diaphragms and magnetic components of a sound-generating device provided by an embodiment of the present application;

Figure 20 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 21 is a schematic diagram of the distribution of the diaphragm and magnetic components of the first vibration module of a sound-generating device provided by an embodiment of the present application;

Figure 22 is a schematic diagram of the distribution of the diaphragm and magnetic components of the second vibration module of a sound-generating device provided by an embodiment of the present application;

Figure 23 is a schematic diagram of the distribution of the diaphragm and magnetic components of the second vibration module of a sound-generating device provided by an embodiment of the present application;

Figure 24 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application;

Figure 25 is a schematic structural diagram of the diaphragm and magnetic components of the second vibration module of a sound-generating device provided by an embodiment of the present application;

Figure 26 is a schematic structural diagram of the diaphragm and magnetic components of the second vibration module of a sound-generating device provided by an embodiment of the present application;

Figure 27 is a partial structural diagram of an electronic device provided by an embodiment of the present application.

Explanation of reference symbols:
100-sounding device; 2-first vibration system; 3-second vibration system; 14-center magnet; 15-side magnet;
21. 1212a-the first voice coil; 22. 12111-the first diaphragm; 31. 1212b-the second voice coil; 32. 12112-the second diaphragm;
110-shell assembly; 111-first shell; 112-second shell; 113-third shell; 114-sound hole;
120-vibration module; 121-vibration component; 1211-diaphragm; 12113-ring structure;
12113a-the first folding ring structure; 12113b-the second folding ring structure; 12113c-the third folding ring structure;
12113d-The fourth folding ring structure; 12114-Planar part;
1212-voice circle; 1212c-third voice circle; 1212d-fourth voice circle;
1213-connecting piece; 1213a-first connecting piece; 1213b-second connecting piece; 12131-first connecting part;
12132-second connection part; 12133-third connection part; 12134-first through hole; 12135-second through hole;
1214-support member; 12141-the first end of the support member; 12142-the second end of the support member; 12143-support wall;
122-magnetic component; 1221-magnetic component; 1221a-first magnetic component; 1221b-second magnetic component;
1221c-the third magnetic part; 1221d-the fourth magnetic part; 1221e-the fifth magnetic part; 1221f-the sixth magnetic part;
1222-magnetic conductive plate; 1222a-top magnetic conductive plate; 1222b-bottom magnetic conductive plate.

Detailed ways

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application and are not intended to limit the present application.

Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms such as the third person singular "comprises" and the present participle "comprising" are used. Interpreted as open and inclusive, it means "including, but not limited to." In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example" or "some examples" are used. examples)" and the like are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In addition, in this application, directional terms such as "front" and "back" are defined relative to the schematically placed directions of the components in the drawings. It should be understood that these directional terms are relative concepts and they are used relative to each other. The descriptions and clarifications may change accordingly according to the changes in the orientation of the components in the drawings.

In the embodiment of this application, "and/or" is just an association relationship describing associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, and A and A exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

Figure 1 is a schematic structural diagram of a sound-generating device. Referring to FIG. 1 , the sound-generating device includes: a first vibration system 2 and a second vibration system 3 . The first vibration system 2 and the second vibration system 3 are arranged oppositely. The first vibration system 2 is located at the top of the second vibration system 3 . The first vibration system 2 includes: a first voice coil 21 and a first diaphragm 22, and the first diaphragm 22 is located at the top of the first voice coil 21; the second vibration system 3 includes: a second voice coil 31 and a second diaphragm 32. The second diaphragm 32 is provided at the bottom end of the second voice coil 31; a center magnet 14, a side magnet 15 and other components are also provided between the first vibration system 2 and the second vibration system 3. When the first voice coil 21 and the second voice coil 31 receive an electrical signal, the magnetic circuit system composed of the center magnet 14 and the side magnet 15 can drive the first voice coil 21 to vibrate to drive the first vibration system 2 to vibrate and produce sound. and driving the second voice coil 31 to vibrate to drive the second vibration system 3 to vibrate and produce sound.

However, in the sound-generating device shown in FIG. 1, since the first diaphragm 22 is arranged at the top of the first voice coil 21 and the second diaphragm 32 is arranged at the bottom of the second voice coil 31, the sound-generating device is located at the first end of the first voice coil 21. The size in the direction from the diaphragm 22 to the second diaphragm 32 (ie, the thickness direction of the sound-generating device) is relatively large, which is not conducive to miniaturization of the sound-generating device. In addition, since the side magnets 15 are arranged outside the central magnet 14, the sound-generating device can only emit sound from the top of the first diaphragm 22 or the bottom of the second diaphragm 32. The sound emitting mode from the bottom of the second diaphragm 32 is called top-emitting sound, that is, the sound-emitting device adopts the top-emitting sound emitting mode. Taking the case where the sound-emitting device is installed in an earphone as an example for illustration, in the related art, the transmission of earphones The sound channel is generally located on the side of the sound-generating device. Therefore, using the top-out sound method will cause the sound emitted by the sound-generating device to be bent before reaching the sound transmission channel. This makes the sound environment of the sound-generating device more complicated and difficult to propagate. process produces sound quality loss, thereby affecting the sound quality.

In order to solve the above problems, embodiments of the present application provide a sound-generating device 100 that can reduce the size of the sound-generating device 100 in the thickness direction, thereby reducing the volume of the sound-generating device 100 , which is conducive to the development of miniaturization of the sound-generating device 100 .

The specific structure of the sound-generating device according to the embodiment of the present application will be described in detail below with reference to Figures 2-26.

scene one

FIG. 2 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application, and FIG. 3 is a schematic structural diagram of an explosion in FIG. 2 . Figure 4 is a schematic diagram of another explosion structure of Figure 2.

For convenience of description, in this embodiment, the first direction is the direction from the first housing 111 to the second housing 112 , which is the thickness direction of the sound-generating device 100 , that is, the z direction in the figure. The second direction is the vertical direction in which the x-y plane is the thickness direction of the sound-generating device.

As shown in Figures 2 and 3, the embodiment of the present application provides a sound-generating device 100. The sound-generating device 100 may at least include: a housing component 110 and a vibration module 120. The vibration module 120 may be disposed around the housing component 110. into the inner cavity structure. The housing component 110 can be used to fix the vibration module 120 so that the vibration module 120 can vibrate stably within the housing component 110 and realize the function of converting electrical signals into acoustic signals. In addition, the housing component 110 The vibration module 120 can also be protected. The number of vibration modules 120 is at least one. In this embodiment, one vibration module 120 is installed in the sound-generating device 100 for description.

As shown in FIG. 3 , the housing assembly 110 may include a first housing 111 , a second housing 112 and a third housing 113 , wherein the third housing 113 is located between the first housing 111 and the second housing 112 . space, and the first housing 111, the third housing 113 and the second housing 112 are stacked on each other until the height of the third housing 113 is greater than zero.

The first shell 111, the third shell 113 and the second shell 112 are stacked on each other and form the inner cavity structure of the shell assembly 110. The vibration module 120 is located in the inner cavity structure, and part of the structure of the vibration module 120 It is fixedly connected to the housing assembly 110, and the housing assembly 110 and the vibration module 120 together form the sound-generating device 100 according to the embodiment of the present application.

It should be noted that in some embodiments, the housing assembly 110 may not be provided with a third housing, and the first housing 111 and the second housing 112 may be directly connected.

Of course, in other embodiments, the housing component 110 may also have other structures. In the embodiment of the present application, the shape of the housing component 110 is not further limited.

As shown in Figure 4, the vibration module 120 of the embodiment of the present application may include: a vibration component 121 and a magnetic component 122, wherein the vibration component 121 may be located around the outside of the magnetic component 122; or, the vibration component 121 may be provided on the magnetic component 122. On both sides of 122, the magnetic component 122 is used to drive the vibrating component 121 to vibrate and produce sound after the vibrating component 121 is supplied with an electrical signal. The central axis of the voice coil 1212 in the vibrating component 121 and the central axis of the magnetic component 122 may coincide with each other. Of course, in some embodiments, the central axis of the voice coil 1212 in the vibrating component 121 and the central axis of the magnetic component 122 may also overlap. Not coincident.

In some embodiments, the vibration component 121 may include a plurality of voice coils 1212 and multi-layer diaphragms 1211 spaced apart along the thickness direction of the sound-generating device 100. The multi-layer diaphragms 1211 are fixedly connected to the housing assembly 110; wherein, each The layer diaphragm 1211 is connected to at least one voice coil 1212; a magnetic component 122 is penetrated in each voice coil 1212, where the penetration means that in the first direction, the magnetic component 122 passes through the center of the voice coil 1212. hole, and both ends of the magnetic component 122 are located outside the voice coil 1212 . The magnetic component 122 includes a plurality of magnetic components 1221. At least two of the plurality of magnetic components 1221 are stacked along the thickness direction of the sound-generating device 100. At least one diaphragm 1211 is located between the at least two stacked magnetic components 1221. The outer peripheral side; and at least two stacked magnetic members 1221 are inserted into at least one voice coil 1212, in the first direction, and the polarities of the two adjacent magnetic members 1221 in the thickness direction of the sound-generating device 100 are opposite.

It should be noted that the outer peripheral side of the magnetic member 1221 refers to the outer peripheral edge of the magnetic member on the x-y plane. Of course, the diaphragm 1211 can be disposed at part of the outer peripheral side of the magnetic member 1221, or can also be located on the outer peripheral side of the magnetic member 1221. One week. In the embodiments of this application, no further restrictions are made.

Exemplarily, each layer of diaphragm 1211 corresponds to a voice coil 1212. The diaphragm 1211 can be surrounding the outside of the voice coil 1212, or the diaphragm 1211 can be located on both sides of the voice coil 1212. For example, the diaphragm 1211 The number of diaphragms 1211 and voice coils 1212 can be two layers, and the number of voice coils 1212 can be two. Of course, in other embodiments, the number of diaphragms 1211 and voice coils 1212 can also be 3, 4 or more. In this embodiment The number of diaphragms 1211 and voice coils 1212 is not limited.

In some embodiments, the vibration assembly 121 may also include a plurality of connecting pieces 1213, and some of the connecting pieces 1213 may include a first connecting part 12131, a second connecting part 12132, and a third connecting part 12133 (see Figures 6 and 8 (shown), the third connecting part 12133 is provided between the first connecting part 12131 and the second connecting part 12132; one end of the third connecting part 12133 is fixedly connected to the first connecting part 12131, and the other end is close to the second connecting part 12132. direction and is fixedly connected with the second connecting portion 12132; in the thickness direction of the sound-generating device 100, the first There is a gap between the connecting part 12131 and the second connecting part 12132.

In a possible implementation, each layer of diaphragm 1211 is connected to at least one voice coil 1212, including: each layer of diaphragm 1211 is connected to at least one voice coil 1212 through a connecting piece 1213; wherein, the first connecting part 12131 and the third One of the two connecting parts 12132 is connected to one end of the voice coil 1212 , and the other of the first connecting part 12131 and the second connecting part 12132 is connected to the diaphragm 1211 .

In this embodiment, part of the connecting piece 1213 can be used to connect the diaphragm 1211 and the voice coil 1212. When the voice coil 1212 vibrates, the vibration of the voice coil 1212 can be transmitted to the diaphragm 1211 through the connecting piece 1213, so that the diaphragm 1211 can vibrate together with the voice coil 1212, thereby converting electrical signals into sound signals. In addition, part of the connecting piece 1213 can also be used to connect the diaphragm 1211 to the diaphragm 1211, wherein the multi-layered diaphragms 1211 connected by the connecting piece 1213 can be located in the same plane in the treatment direction of the first direction, so that the multiple layers of diaphragms 1211 can be connected. The layer diaphragms 1211 are connected as a whole, so that the multi-layer diaphragms 1211 can vibrate together.

It can be understood that the shapes of different connecting pieces 1213 may be the same or different. The shapes of the different connecting pieces 1213 are not further limited in this embodiment. In addition, the number of connecting pieces 1213 can be determined according to the number of diaphragms 1211. Of course, the connection method between the diaphragm and the voice coil includes but is not limited to connecting pieces. For example, the fixed connection can also be achieved by bonding. The specific number In this embodiment, no further limitation is made.

In some embodiments, the diaphragm 1211 can be arranged around the outside of the voice coil 1212. In the z direction, there can be a gap between the outer edge of the voice coil 1212 and the diaphragm 1211; one end of the connecting piece 1213 and the end of the voice coil 1212 One end is fixedly connected, and the other end of the connecting piece 1213 extends in a direction away from the voice coil 1212; and the end of the connecting piece 1213 away from the voice coil 1212 is in contact with the diaphragm 1211. For example, the end of the connecting piece 1213 away from the voice coil 1212 is closely connected to the diaphragm 1211 .

By setting a gap in the z direction between the outer edge of the voice coil 1212 and the diaphragm 1211, and then connecting the diaphragm 1211 and the voice coil 1212 through the connecting piece 1213, the vibration relationship between the diaphragm 1211 and the voice coil 1212 is improved. It is transmitted through the connecting piece 1213, so that the position of the diaphragm 1211 can be adjusted by changing the shape of the connecting piece 1213, thereby improving the flexibility of the position of the diaphragm 1211.

The following description assumes that the vibration component 121 includes two layers of diaphragms 1211 and two voice coils 1212 .

As shown in Figure 5, the two diaphragms 1211 are respectively a first diaphragm 12111 and a second diaphragm 12112. The first diaphragm 12111 and the second diaphragm 12112 are spaced apart along the Z direction. The first diaphragm 12111 is close to the first diaphragm. The housing 111 is provided, and the second diaphragm 12112 is provided close to the second housing 112; the two voice coils 1212 are the first voice coil 1212a and the second voice coil 1212b respectively, and the first voice coil 1212a is provided close to the first housing 111. The second voice coil 1212b is disposed close to the second housing 112. In the second direction, the first diaphragm 12111 is close to one end of the housing assembly 110 and is connected to both the first housing 111 and the third housing 113; the second diaphragm 12112 is close to one end of the housing assembly 110 and is connected to the second The housing 112 and the third housing 113 are both connected.

Wherein, the first voice coil 1212a and the second voice coil 1212b can be coaxially arranged along the z direction, and the orthographic projection of the second voice coil 1212b along the z direction is located inside the first voice coil 1212a, that is, the inner diameter of the first voice coil 1212a It is larger than the outer diameter of the second voice coil 1212b, so that part of the structure of the first voice coil 1212a and part of the second voice coil 1212b can overlap in the z direction, which can reduce the height of the vibration module 120. In addition, when the vibration directions of the first voice coil 1212a and the second voice coil 1212b are opposite, the transmission of the vibration of the vibration module 120 to the outside world can be reduced.

Of course, in some embodiments, the orthographic projection of the first voice coil 1212a along the z direction may also be located inside the second voice coil 1212b, that is, the inner diameter of the second voice coil 1212b is larger than the outer diameter of the first voice coil 1212a.

In a possible implementation, the vibration component 121 includes two voice coils 1212, namely a first voice coil 1212a and a second voice coil 1212b; wherein, the orthographic projection of the first voice coil 1212a in the first direction is equal to Orthographic projections of the second voice coil 1212b in the first direction at least partially overlap.

In a possible implementation, the first diaphragm 12111 is connected to the first voice coil 1212a, and the second diaphragm 12112 is connected to the second voice coil 1212b; the central axes of the first voice coil 1212a and the second voice coil 1212b are mutually connected. Overlapping; in the thickness direction of the sound-generating device 100, the magnetic component 122 is inserted into the vibrating component 121, including: the magnetic component 122 is inserted into the first voice coil 1212a and the second voice coil 1212b of the vibrating component 121, and the magnetic component 122 is The central axis and the central axis of the first voice coil 1212a and the second voice coil 1212b may coincide with each other.

By arranging the central axes of the first voice coil 1212a and the second voice coil 1212b to coincide with each other, and the central axis of the magnetic assembly 122 to coincide with the central axes of the first voice coil 1212a and the second voice coil 1212b, the sound-generating device 100 can be The symmetrical structure or the centrally symmetrical structure can make the vibration of the sound-generating device 100 relatively uniform in all directions, thereby improving the vibration synchronization of the diaphragm 1211 and improving the work efficiency.

For example, in the z direction, there is a first gap h1 between the first diaphragm 12111 and the inner wall of the first housing 111, and a second gap h2 between the first diaphragm 12111 and the second diaphragm 12112. There is a third gap h3 between the second diaphragm 12112 and the inner wall of the second housing 112 . Among them, the first gap h1, the second gap h2 and the third gap h3 can all be used as the vibration space of the diaphragm 1211, and at least one of the first gap h1, the second gap h2 and the third gap h3 is an outlet of the sound-generating device 100. A sound outlet 114 is provided on a part of the shell wall of the housing assembly corresponding to the sound outlet channel.

It should be noted that in this embodiment, the inner wall of the first housing 111 is the inner bottom wall of the housing assembly 110 , and the inner wall of the second housing 112 is the inner top wall of the housing assembly 110 . Of course, in other embodiments, the housing assembly 110 may also have other structures, in which the diaphragm 1211 (the first diaphragm 12111 or the second diaphragm 12112) close to the inner bottom wall of the housing assembly 110 is in contact with the housing assembly 110. There is a first gap h1 between the inner bottom walls of 110; there is a second gap h2 between two adjacent diaphragms 1211 (first diaphragm 12111 or second diaphragm 12112); There is a third gap h3 between the membrane 1211 (the first diaphragm 12111 or the second diaphragm 12112) and the inner top wall of the housing assembly; at least one of the first gap h1, the second gap h2 and the third gap h3 is A sound outlet channel of the sound generating device 100; a sound outlet hole 114 is provided on part of the shell wall of the housing assembly 110 corresponding to the sound outlet channel.

In this embodiment, when the sound hole 114 is located on the housing wall (which can be a side wall, or a top wall, or a bottom wall) of the part of the housing assembly 110 corresponding to the first gap h1 or the third gap h3, the sound-generating device The sound emitting mode of 100 is top sound; when the sound hole 114 is located on the shell wall of the part of the housing assembly corresponding to the second gap h2, the sound emitting device has a middle sound emitting mode. That is, the sound emitting device 100 can emit sound from any one or more of the first gap h1, the second gap h2, and the third gap h3, where the sound emitted from the second gap h2 can be called intermediate sound emitting. , the sound coming out of the first gap h1 or the third gap h3 is called the ejection sound. That is, the sound emitting device 100 in the embodiment of the present application can adopt a top sound emitting method or a middle sound emitting method. The specific sound emitting method used in the application can be set according to the actual situation. No further limitation is made in this embodiment.

The sound-producing device in the related art can only use the top-out method to produce sound. Taking the sound-producing device installed in the earphone as an example, in the related art, the sound transmission channel of the earphone is generally located on the side of the sound-producing device. Therefore, using The sound emitting method of the top-emitting sound will cause the sound emitted by the sound-generating device to be bent before reaching the sound transmission channel. This makes the sound-emitting device's sound environment more complicated, causing sound quality loss during the propagation process, thereby affecting the sound quality.

The sound-producing device 100 provided in the embodiment of the present application can adopt two sound-producing modes: top sound and middle sound, thereby improving the design flexibility of the sound-producing position of the sound-producing device 100, that is, according to the position of the sound transmission channel, Choose an appropriate sound emission position to reduce the distance between the sound signal from the sound outlet to the sound transmission channel, that is, simplify the sound emission environment and reduce sound quality loss. In addition, when the sound output position is located in the second gap h2, that is, when the sound output method of the middle sound is used, the sound output hole corresponding to the second gap h2 can be directly connected to the sound transmission channel during use, thereby reducing the sound output. The distance between the hole and the sound transmission channel improves the sound environment of electronic equipment, improves high-frequency characteristics, and thereby improves sound quality.

As shown in FIG. 5 , in this embodiment, the sound hole 114 is located in the housing wall (third housing 113 ) of the part of the housing assembly corresponding to the second gap h2 , and the sound output mode is middle sound output. Of course, it can be understood that in other embodiments, the shape of the sound hole 114 can also be other shapes, such as a quadrilateral, a triangle, etc., and of course the sound hole 114 can also be arranged in other positions, such as the first shell. The position and shape of the sound hole 114 on the body 111 or the second housing 112 are not further limited.

It should be noted that the voice coil that is fed with an electrical signal will vibrate under the action of the magnetic field of the magnetic component, which can drive the diaphragm connected to the voice coil to vibrate. The vibration of the diaphragm will cause the gas on both sides of the diaphragm to vibrate. Vibration, when the sound outlet 114 is provided on the sound outlet, the air in the sound outlet channel will flow toward the position of the sound outlet 114. As shown in Figure 5, the direction pointed by the solid arrows in the first gap h1, the second gap h2 and the third gap h3 may be the direction of the air flow in the sound outlet channel. Of course, the air flow direction in the sound outlet channel is related to the position where the sound outlet hole 114 is arranged, and the air flow direction in the sound outlet channel is all toward the direction of the sound outlet hole 114 .

It should be noted that the first voice coil 1212a may be a high-frequency vibrating voice coil, that is, the first voice coil 1212a and the first diaphragm 12111 may be used as a high-pitched sounding unit; the second voice coil 1212b may be a low-frequency vibrating voice coil, that is, the first The second voice coil 1212b and the second diaphragm 12112 can serve as a bass sound unit. Of course, in some embodiments, the first voice coil 1212a can also be a low-frequency vibrating voice coil, and the second voice coil 1212b can be a low-frequency vibrating voice coil; or the first voice coil 1212a can be a high-frequency vibrating voice coil, and the second voice coil 1212b is a high-frequency vibrating voice coil; alternatively, the first voice coil 1212a is a low-frequency vibrating voice coil, and the second voice coil 1212b is a high-frequency vibrating voice coil. In the embodiments of this application, this is not further limited.

It should be noted that the heights of the first gap h1, the second gap h2 and the third gap h3 in the z direction may be the same or different. In this embodiment, for the first gap h1, the second gap h2 and the third gap h3 The height of the gap h3 in the z direction is not limited.

It can be understood that the first gap h1, the second gap h2 and the third gap h3 can all be used as the vibration space of the diaphragm 1211. The larger the vibration space, the more sufficient the vibration of the diaphragm 1211 can be, that is, the diaphragm 1211 can vibrate more fully. 1211 will not affect the amplitude due to insufficient vibration space, thereby affecting the sound quality. For example, when the heights of the first gap h1, the second gap h2, and the third gap h3 along the z direction are all set relatively large, the diaphragm 1211 can have sufficient vibration space, thereby improving the performance of the sound-generating device 100. sound quality.

In this embodiment, the heights of the first gap h1, the second gap h2, and the third gap h3 in the z direction can be changed by adjusting the shape of the connecting piece 1213.

In this embodiment, as shown in Figure 5, the connecting piece 1213 may include a first connecting piece 1213a and a second connecting piece 1213b, wherein the A connecting piece 1213a is disposed between the first diaphragm 12111 and the first voice coil 1212a, and a second connecting piece 1213b is disposed between the second diaphragm 12112 and the second voice coil 1212b.

FIG. 6 is a schematic structural diagram of a first connecting piece of a sound-generating device provided by an embodiment of the present application. Figure 7 is another schematic cross-sectional structural diagram of a sound-generating device provided by an embodiment of the present application.

As shown in FIG. 5 , FIG. 6 and FIG. 7 , in this embodiment, the first connecting piece 1213a may include a first connecting part 12131 , a second connecting part 12132 and a third connecting part 12133 . The first connecting part 12131 and the third connecting part 1213a A voice coil 1212a is fixedly connected, and the second connecting part 12132 is fixedly connected to the first diaphragm 12111; one end of the third connecting part 12133 is connected to the first connecting part 12131, and the other end is connected to the second connecting part 12132; the first voice coil 1212a is close to The distance from one side of the first housing 111 to the first housing 111 is smaller than the distance from the second connecting portion 12132 to the first housing 111 , and a first gap is formed between the first diaphragm 12111 and the first housing 111 h1.

By arranging the distance from the side of the first voice coil 1212a close to the first housing 111 to the first housing 111 to be smaller than the distance from the second connecting portion 12132 to the first housing 111 , compared to the related art, the diaphragm is It is arranged at the top or bottom of the voice coil, so that the height of the first gap h1 in the z direction can be increased without changing the overall height of the sound-generating device 100, thereby increasing the vibration space of the first diaphragm 12111. The larger the vibration space of the diaphragm 12111 is, the vibration stroke of the first diaphragm 12111 can be ensured, that is, the maximum amplitude of the first diaphragm 12111 is increased, thereby increasing the conversion rate of low-frequency signals. Alternatively, on the premise that the height of the first gap h1 along the z-direction remains unchanged, the thickness of the sound-generating device 100 in the z-direction can be reduced, thereby making the volume of the sound-generating device 100 smaller, which is conducive to the development of miniaturization of the sound-generating device 100 .

For example, in some embodiments, as shown in FIG. 7 , the first connecting piece 1213a can be disposed on a side of the first diaphragm 12111 and the first voice coil 1212a close to the first housing 111 , and the first connecting portion 12131 and The first voice coil 1212a is connected to a side close to the first housing 111. The second connecting part 12132 is connected to a side of the first diaphragm 12111 close to the first housing 111. The third connecting part 12133 is an inclined surface, and the inclined surface is from The direction from the first connecting part 12131 to the second connecting part 12132 gradually tilts away from the first housing 111 .

Of course, in other embodiments, the first connecting piece 1213a can also be disposed on the side of the first diaphragm 12111 and the first voice coil 1212a away from the first housing 111 (not shown in the figure), wherein the first The connecting part 12131 is connected to the side of the first voice coil 1212a away from the first housing 111, the second connecting part 12132 is connected to the side of the first diaphragm 12111 away from the first housing 111, the third connecting part 12133 is an inclined surface, and The inclined surface gradually inclines toward the first housing 111 in the direction from the first connecting portion 12131 to the second connecting portion 12132 .

Wherein, when the third connecting part 12133 is an inclined surface, the height of the first gap h1 in the z direction can be changed by changing the inclination of the inclined surface. It can be understood that the inclination of the inclined surface can be changed by changing the inclination of the first connecting part 12131 and It is determined by the height difference of the second connecting part 12132 in the z direction. The greater the height difference of the first connecting part 12131 and the second connecting part 12132 in the z direction, the greater the inclination of the inclined surface.

For example, when the first connecting piece 1213a is disposed on the side of the first diaphragm 12111 close to the first housing 111, the greater the inclination of the third connecting portion 12133, the greater the height of the first gap h1 in the z direction. , the larger the vibration space of the first diaphragm 12111 is. When the first connecting piece 1213a is disposed on the side of the first diaphragm 12111 away from the first housing 111, the greater the inclination of the third connecting portion 12133, the smaller the height of the first gap h1 along the z direction. In this embodiment, the specific height of the first gap h1 and the inclination of the third connecting portion 12133 are not limited in this embodiment.

It should be noted that the shape of the third connecting part 12133 includes but is not limited to an inclined surface. In some embodiments, the third connecting part 12133 may also be a plane arranged along the z direction. Regarding the specific shape of the third connecting part 12133 No further limitation is made in the embodiments of this application. The shape of the first connecting piece 1213a includes but is not limited to the structure shown in Figure 6. In other embodiments, the first connecting piece 1213a can also be set into other structures. The structure of the first connecting piece 1213a is described in this embodiment. without further limitation.

In this embodiment, the number of the first connecting pieces 1213a may be two. As shown in FIG. 5 , the two first connecting pieces 1213a are arranged oppositely on both sides of the first voice coil 1212a, so that the first diaphragm 12111 The first voice coil 1212a can conduct vibration through the two first connecting pieces 1213a, so that the diaphragms 1211 on both sides of the first voice coil 1212a can vibrate synchronously, so as to achieve better vibration balance and reduce the impact of polarization on acoustic performance. influence, thereby ensuring the synchronization of the conversion between electrical signals and sound signals, improving system stability and improving sound quality. Of course, in other embodiments, 3, 4 or more first connecting pieces 1213a can also be provided, and the plurality of first connecting pieces 1213a are arranged symmetrically or centrally symmetrically around the first voice coil 1212a to ensure the first Different positions of the diaphragm 12111 can vibrate synchronously. Therefore, in this embodiment, the number of the first connecting pieces 1213a is not limited.

FIG. 8 is a schematic structural diagram of a second connecting piece of a sound-generating device provided by an embodiment of the present application. As shown in Figure 8, in this embodiment, the second connecting piece 1213b may include a first connecting part 12131, a second connecting part 12132 and a third connecting part 12133; the first connecting part 12131 is fixedly connected to the second voice coil 1212b , the second connecting part 12132 is connected to the second diaphragm 12112, and a third connecting part 12133 is also provided between the first connecting part 12131 and the second connecting part 12132; wherein, the second connecting part 12132 is an annular sheet structure. , and the second connecting part 12132 is surrounded on the outside of the first connecting part 12131, and a first through hole 12134 is provided on the inside of the second connecting part 12132; The first connecting part 12131 is a strip-shaped plate structure, and the orthographic projection of the first connecting part 12131 along the z direction is located in the first through hole 12134; one end of the third connecting part 12133 is connected to the first connecting part 12131, and the other end is connected to The inner side of the second connecting part 12132; the distance from the side of the second voice coil 1212b close to the second housing 112 to the second housing 112 is less than the distance from the second connecting part 12132 to the second housing 112, and in the second vibration A third gap h3 is formed between the film 12112 and the second housing 112 .

By arranging the distance from the side of the second voice coil 1212b close to the second housing 112 to the second housing 112 to be smaller than the distance from the second connecting portion 12132 to the second housing 112 , compared to the related art, the diaphragm is It is arranged at the top or bottom of the voice coil, so that the height of the third gap h3 in the z direction can be increased without changing the overall height of the sound-generating device 100, thereby increasing the vibration space of the second diaphragm 12112, thereby improving the third The maximum amplitude of the second diaphragm 12112 improves the conversion rate of low-frequency signals. Alternatively, on the premise that the height of the third gap h3 along the z-direction remains unchanged, the thickness of the sound-generating device 100 in the z-direction can be reduced, thereby making the volume of the sound-generating device 100 smaller, which is conducive to the development of miniaturization of the sound-generating device 100 .

For example, in some embodiments, as shown in Figure 5, when the second connecting piece 1213b is disposed on the side of the second diaphragm 12112 and the second voice coil 1212b close to the second housing 112, the first connecting portion 12131 It is connected to the side of the second voice coil 1212b close to the second housing 112. The second connection part 12132 is connected to the side of the second diaphragm 12112 close to the second housing 112. The third connection part 12133 may be a plane arranged along the z direction. structure, and the distance between the first connecting part 12131 and the second housing 112 is smaller than the distance between the second connecting part 12132 and the second housing 112 .

Of course, in other embodiments, the second connecting piece 1213b can also be disposed on the side of the second diaphragm 12112 and the second voice coil 1212b away from the second housing 112 (not shown in the figure), wherein the first The connecting part 12131 is connected to a side of the second voice coil 1212b away from the second housing 112, the second connecting part 12132 is connected to a side of the second diaphragm 12112 away from the second housing 112, and the third connecting part 12133 may be along the z direction. The planar structure is provided, and the distance between the first connecting part 12131 and the second housing 112 is greater than the distance between the second connecting part 12132 and the second housing 112 .

It should be noted that the shape of the third connecting portion 12133 of the second connecting piece 1213b includes but is not limited to the above-mentioned planar structure arranged along the z direction. In other embodiments, the third connecting portion 12133 of the second connecting piece 1213b It may also have other structures, such as a slope, etc. The specific shape of the third connecting part 12133 is not further limited in this embodiment.

In some embodiments, as shown in Figures 5 and 8, a second through hole 12135 is also provided on the first connecting portion 12131 of the second connecting piece 1213b, wherein the first through hole 12134 and the second through hole 12135 The geometric center is located on the central axis of the vibration module 120 . The first through hole 12134 is used to allow part of the second diaphragm 12112 and the second voice coil 1212b to pass through, and the first connecting portion 12131 and the third connecting portion 12133 of the second connecting piece 1213b face the first through hole 12134 to form a An accommodation space, part of the second diaphragm 12112 and part of the second voice coil 1212b pass through the first through hole 12134, and are just located in the accommodation space, so that part of the second diaphragm 12112 can be hidden in the accommodation space.

That is to say, due to the arrangement of the third connection part 12133, part of the structure of the second diaphragm 12112 can be located between the top and bottom ends of the second voice coil 1212b. In this way, compared with the related art, the diaphragm is directly arranged on the sound coil 1212b. The top or bottom of the circle can increase the vibration space on both sides of the second diaphragm 12112 while ensuring that the thickness of the sound-generating device 100 along the z direction remains unchanged; or, while ensuring that the vibration on both sides of the second diaphragm 12112 When the space remains unchanged, reducing the thickness of the sound-generating device 100 along the z-direction, thereby reducing the volume of the sound-generating device 100, is conducive to miniaturization development.

Figure 9 is another schematic cross-sectional structural diagram of a sound-generating device provided by an embodiment of the present application. As shown in FIG. 9 , the second through hole 12135 is used for the magnetic component 122 to pass through. By providing the second through hole 12135, the magnetic component 122 can penetrate the vibrating component 121 without increasing the thickness of the sound-generating device 100 in the z direction, so that the vibrating component 121 can be completely in the magnetic field generated by the magnetic component 122. , thereby improving the utilization rate of the magnetic field generated by the magnetic component 122, which is beneficial to improving the conversion rate of electrical signals and sound signals, thereby improving sound quality.

It should be noted that the shape of the second connecting piece 1213b includes but is not limited to the shape shown in Figure 8. For example, the shape of the first through hole 12134 can be set according to the shape of the second diaphragm 12112. The shape of the hole 12135 can be set according to the shape of the magnetic component 122. Therefore, the specific shapes of the first through hole 12134 and the second through hole 12135 are not further limited in the embodiment of the present application.

By arranging the connecting piece 1213, the heights of the first gap h1, the second gap h2 and the third gap h3 in the z direction can be changed, and in this way, the partial structure of the first voice coil 1212a and the partial structure of the second voice coil 1212b are in the z direction. On the premise of overlapping upward, it can also ensure that there is sufficient vibration space between the first diaphragm 12111 and the second diaphragm 12112. The height of the entire vibration module 120 along the z direction can also be reduced.

In this embodiment, as shown in FIG. 5 , the diaphragm 1211 may include a ring structure 12113 and a flat surface 12114 , where the ring structure 12113 is used to connect the diaphragm 1211 with other structures. For example, the ring structure 12113 It can be used to connect the diaphragm 1211 with the housing assembly 110, etc.; the flat part 12114 can be used to connect the first connecting piece 1213a or the second connecting part 12132. In addition, the flat part 12114 can also be used to increase the vibration of the diaphragm 1211. Space, and in some embodiments, the flat portion 12114 can also be used to connect the ring structure 12113.

It should be noted that the folding ring structures 12113 can be provided at any position on the diaphragm 1211 that needs to be connected to other structures. Therefore, the number of folding ring structures 12113 on the diaphragm 1211 is not limited in this embodiment and can be determined according to specific requirements. specific setting of the situation. In addition, in some embodiments, the planar portion 12114 of the diaphragm 1211 may be a connecting piece 1213 of a plate-like structure (see Figure 11).

In addition, the ring structure 12113 and the flat surface 12114 can be fixedly connected through integral molding, bonding, welding, etc. That is to say, the diaphragm 1211 can be an integrated structure or a combined structure composed of multiple components. Structure, the connection method between the ring structure 12113 and the flat surface 12114 of the diaphragm 1211 is not further limited in the embodiment of the present application.

Figure 10 is a schematic structural diagram of a support member of a sound-generating device provided by an embodiment of the present application.

In some embodiments, the vibration assembly 121 may also include a support member 1214. The support member 1214 is located around the outside of the magnetic assembly 122. One end of the diaphragm 1211 close to the support member 1214 is fixedly connected to the support member 1214; vibrators located on different layers The membrane 1211 is connected to the support 1214 at different locations.

As shown in FIGS. 5 and 10 , the support member 1214 is an annular wall-shaped structure with a “Z” cross-section. The support member 1214 is located around the outside of the first voice coil 1212a and the second voice coil 1212b, and the support member 1214 There is a gap between the first voice coil 1212a and the second voice coil 1212b, and part of the structure of the support member 1214 is fixedly connected to the diaphragm 1211. For example, the end of the support member 1214 close to the first housing 111 is the first end 12141 of the support member. The first end 12141 of the support member is connected to the first diaphragm 12111. The end of the support member 1214 close to the second housing 112 is the second end 12142 of the support member, and the second end 12142 of the support member is connected to the second diaphragm 12112.

The support member 1214 also includes a support wall 12143. The support wall 12143 is disposed between the first end 12141 and the second end of the support member. For example, the support wall 12143 is a planar structure disposed along the z direction. Of course, in addition In some embodiments, the support wall 12143 may also be an inclined planar structure. In the embodiment of this application, the specific structure of the support wall 12143 is not further limited.

It should be noted that the support member 1214 is used to support the ends of the first diaphragm 12111 and the second diaphragm 12112 close to the magnetic component 122, so that the ends of the first diaphragm 12111 and the second diaphragm 12112 close to the magnetic component 122 also have The second gap h2 ensures the vibration space of the first diaphragm 12111 and the second diaphragm 12112. In addition, it can also increase the effective vibration area of the first diaphragm 12111 and the second diaphragm 12112, thereby improving the electrical signal and sound signal. conversion efficiency.

In this embodiment, the height of the second gap h2 between the first diaphragm 12111 and the second diaphragm 12112 along the z direction can be changed by changing the height of the support member 1214 along the z direction, thereby changing the first diaphragm The vibration space of 12111 and the second diaphragm 12112, and the height of the support member 1214 along the z direction are not further limited in the embodiment of the present application.

In addition, the support member 1214 includes but is not limited to the structure shown in Figure 10. As long as it can support the first diaphragm 12111 and the second diaphragm 12112, the support member 1214 can also be set to other structures. In this article In the application embodiment, the structure of the support member 1214 is not further limited.

Of course, in some embodiments, the support member 1214 may not be provided, and the end of the diaphragm 1211 close to the magnetic component 122 may be directly connected to the connecting piece 1213. This may simplify the shape of the diaphragm 1211 and facilitate production.

FIG. 11 is a schematic structural diagram of a first diaphragm of a sound-generating device provided by an embodiment of the present application. As shown in Figure 11, the first diaphragm 12111 has an annular structure, in which a first folding ring structure 12113a is provided near the edge of the annular structure, and a second folding ring structure 12113b is provided on the inner ring of the annular structure. One end of the first folding ring structure 12113a close to the housing assembly 110 is fixedly connected to the housing assembly 110 (see FIG. 5 ). For example, one end of the first folding ring structure 12113a close to the housing assembly 110 is disposed on the first shell. between the body 111 and the third housing 113, and are fixedly connected to the first housing 111 and the third housing 113 respectively; the end of the first ring structure 12113a close to the magnetic component 122 and the flat part 12114 of the first diaphragm 12111 Fixed connection, the end of the planar portion 12114 away from the first folding ring structure 12113a is fixedly connected to the second folding ring structure 12113b, and the end of the second folding ring structure 12113b close to the magnetic component 122 is fixedly connected to the first end 12141 of the support member.

In this embodiment, between the first folding ring structure 12113a and the housing assembly 110, between the planar portion 12114 and the first folding ring structure 12113a, between the planar portion 12114 and the second folding ring structure 12113b, and between the second folding ring The structure 12113b and the support member 1214 can be fixedly connected through bonding, welding, etc. Of course, in other embodiments, the planar portion 12114, the first folding ring structure 12113a and the second folding ring structure 12113b can also be connected through One-piece molding to achieve fixed connection. In this embodiment, the connection method of the first folding ring structure 12113a, the second folding ring structure 12113b and the planar portion 12114 is not limited.

It should be noted that the folding ring structure 12113 is an arc-shaped protruding structure, and the protruding directions of the first folding ring structure 12113a and the second folding ring structure 12113b can be the same or different. In this embodiment, for the first folding ring structure 12113b The protruding directions of the ring structure 12113a and the second folded ring structure 12113b are not limited.

FIG. 12 is a schematic structural diagram of a second diaphragm of a sound-generating device provided by an embodiment of the present application. As shown in Figure 12, the shape of the second diaphragm 12112 is similar to that of the first diaphragm 12111. The second diaphragm 12112 can also be an annular structure, wherein the annular structure is provided near the outer end. A third folding ring structure 12113c is provided, and a fourth folding ring structure 12113d is provided on the inner ring of the annular structure. One end of the third folding ring structure 12113c close to the housing assembly 110 is fixedly connected to the housing assembly 110 (see FIG. 5 ). For example, one end of the third folding ring structure 12113c close to the housing assembly 110 is disposed on the third shell. between the body 113 and the second housing 112, and are fixedly connected to the third housing 113 and the second housing 112 respectively; the end of the third ring structure 12113c close to the magnetic component 122 and the flat part 12114 of the second diaphragm 12112 Fixed connection, the end of the planar portion 12114 away from the third folding ring structure 12113c is fixedly connected to the fourth folding ring structure 12113d, and the end of the fourth folding ring structure 12113d close to the magnetic component 122 is fixedly connected to the second end 12142 of the support member.

In this embodiment, the third folding ring structure 12113c, the fourth folding ring structure 12113d and the planar portion 12114 can be fixedly connected through welding, bonding, integrated molding and other processes. In this embodiment, the third folding ring structure 12113c The connection method of the fourth ring structure 12113d and the planar portion 12114 is not limited.

It should be noted that the folding ring structure 12113 is an arc-shaped protruding structure, and the protruding directions of the third folding ring structure 12113c and the fourth folding ring structure 12113d may be the same or different. In this embodiment, the third folding ring structure 12113c and the fourth folding ring structure 12113d may have different protruding directions. The protruding directions of the ring structure 12113c and the fourth folded ring structure 12113d are not limited.

In this embodiment, the magnetic assembly 122 may include at least two magnetic pieces 1221, wherein the at least two magnetic pieces 1221 are stacked on each other. The magnetic assembly 122 also includes a magnetic conductive plate 1222, and both ends of each magnetic piece 1221 are A magnetically conductive plate 1222 can be provided. The magnetically conductive plate 1222 can reduce the air gap between the magnetic components, thereby increasing the magnetic flux of the magnetic component 122 and strengthening the magnetic field strength of the magnetic component 122, thus improving the relationship between the electrical signal and the sound signal of the sound-generating device 100. conversion efficiency between. In addition, the directions of the magnetic fields of two adjacent magnetic components are opposite, which can increase the magnetic field strength of the magnetic component 122 and thereby increase the conversion efficiency between electrical signals and sound signals.

Figure 13 is a schematic structural diagram of a magnetic component of a sound-generating device provided by an embodiment of the present application. FIG. 14 is a schematic structural diagram of the direction of magnetic flux lines in a magnetic component of a sound-generating device according to an embodiment of the present application.

As shown in Figure 13, the magnetic assembly 122 includes three magnetic parts 1221. For example, in the direction from the first housing 111 to the second housing 112, they are the first magnetic part 1221a, the second magnetic part 1221b and the second magnetic part 1221b. The third magnetic component 1221c, wherein the first magnetic component 1221a, the second magnetic component 1221b and the third magnetic component 1221c are stacked in sequence, and the magnetic field direction of the first magnetic component 1221a is opposite to the magnetic field direction of the second magnetic component 1221b. The magnetic field direction of the three magnetic parts 1221c is opposite to the magnetic field direction of the second magnetic part 1221b.

The magnetic assembly 122 also includes a plurality of magnetic conductive plates 1222. The magnetic conductive plate 1222 located at one end of the magnetic assembly 122 close to the first housing 111 is the bottom magnetic conductive plate 1222b. The conductive plate 1222 located at one end of the magnetic assembly 122 close to the second housing 112 The magnetic plate 1222 is a top magnetic conductive plate 1222a, a bottom magnetic conductive plate 1222b is fixedly connected to the first housing 111, and the top magnetic conductive plate 1222a is fixedly connected to the second housing 112. In addition, magnetic conductive plates 1222 are provided between adjacent magnetic components 1221 . Of course, in some embodiments, the second housing 112 may be a top magnetic conductive plate 1222a, and the first housing 111 may be a bottom magnetic conductive plate 1222b.

In a possible implementation, the magnetic component 122 includes a plurality of magnetic components 1221, and all the magnetic components 1221 are stacked along the thickness direction of the sound-generating device 100; in the thickness direction of the sound-producing device 100, at least one end of the magnetic component 122 is in contact with the shell. The body assembly 110 is fixedly connected, including: both ends of the magnetic assembly 122 are fixedly connected to the housing assembly 110 .

In this embodiment, the magnetic component 122 is disposed through the vibration component 121 and is fixedly connected to the first housing 111 through the top magnetic conductive plate 1222a and fixedly connected to the second housing 112 through the bottom magnetic conductive plate 1222b.

As shown in Figure 14, since the magnetic field directions between adjacent magnetic components 1221 in the magnetic assembly 122 are opposite, a part of the magnetic field lines between the two adjacent magnetic components 1221 can be shared, so that the adjacent magnetic components 1221 can share the magnetic field lines. The magnetic field lines between the magnetic components 1221 can be superimposed, thereby increasing the magnetic field strength of each magnetic component 1221, so that the magnetic field strength of the entire magnetic component 122 is greatly enhanced, thereby improving the conversion efficiency between electrical signals and sound signals.

It should be noted that the shape and number of the magnetically conductive plates 1222 can be specifically set according to specific circumstances, and the shape and number of the magnetically conductive plates 1222 are not further limited.

In a possible implementation, the first diaphragm 12111 is an integral piece, and the first diaphragm 12111 is located outside the first voice coil 1212a (see Figure 5); or, the first diaphragm 12111 includes multiple A first sub-diaphragm (not shown in the figure), a plurality of first sub-diaphragms 1211 are arranged outside the voice coil 1212, and two adjacent first sub-diaphragms are fixedly connected through a connecting piece 1213. Among them, the connecting piece 1213 connecting adjacent first sub-diaphragms can be a flat plate structure, and in some embodiments, the first sub-diaphragm can be a folded ring structure 12113 on the first diaphragm 12111, and the connecting piece 1213 The flat plate structure may be the flat part 12114 of the diaphragm 1211.

In a possible implementation, the second diaphragm 12112 is an integral piece, and the second diaphragm 12112 is located outside the second voice coil 1212b (see FIG. 5 ); or, the second diaphragm 12112 includes multiple A plurality of second sub-diaphragms (not shown in the figure) are arranged outside the voice coil 1212, and adjacent second sub-diaphragms are fixedly connected through connecting pieces 1213. Among them, the connecting piece 1213 can be a flat plate structure, And in some embodiments, the second sub-diaphragm may be the ring structure 12113 of the second diaphragm 12112, and the flat plate structure of the connecting piece 1213 may be the planar portion 12114 of the diaphragm 1211.

In addition, in the embodiment of the present application, the shape of the diaphragm 1211 is not limited. The diaphragm 1211 may have the structure shown in FIGS. 11 and 12 , or may have other structures, for example, as shown in FIG. 15 It is shown that the diaphragm 1211 can be arranged on both sides of the magnetic member 1221. What is shown in Figure 15 is the structure of the first diaphragm 12111. Of course, in other embodiments, what is shown in Figure 15 can also be the second diaphragm. Membrane 12112. It should be noted that the figure shown in FIG. 15 only shows a schematic distribution diagram of the diaphragm 1211 and the magnetic member 1221. The shape of the diaphragm 1211 is not further limited in the embodiment of this application.

The arrow with a solid line shown in Figure 15 indicates the direction of the air flow in the sound transmission channel, and the sound outlet can be arranged in the direction pointed by the arrow with a solid line in Figure 15 .

The sound-generating device 100 provided by the embodiment of the present application is composed of two layers of diaphragms 1211 and two voice coils 1212 of the vibration component 121. The two layers of diaphragms 1211 are spaced apart along the z direction, and the two voice coils 1212 are spaced apart along the z direction. , and the inner diameter of one voice coil 1212 is larger than the inner diameter of the other voice coil 1212, so that the two voice coils 1212 can be nested with each other, thereby reducing the height of the vibration module 120 along the z direction. The movement directions of the two voice coils 1212 can be opposite when working, which can reduce the vibration transmission of the vibration module 120 to the outside world, thereby improving stability.

In addition, by providing a second gap h2 between the first diaphragm 12111 and the second diaphragm 12112, the sound emitting position of the sound emitting device 100 can be set in the second gap h2, that is, the sound is emitted in the middle. When used, the second gap h2 can be directly connected to the pipe of the sound transmission channel, thereby reducing the bending of the sound transmission channel pipe, improving the sound environment of the electronic device, improving the high-frequency characteristics, and thereby improving the sound quality. In addition, by setting the magnetic properties of adjacent magnetic components 1221 to be opposite, the intensity of the magnetic field generated by the magnetic component 122 can be increased, thereby improving the working efficiency of the vibration component 121.

In this embodiment, the number of vibration modules 120 is one; wherein, the central axis of the vibration module 120 and the central axis of the housing assembly 110 coincide with each other.

The above embodiment introduces the technical solution of arranging one vibration module 120 in the sound-generating device 100. Of course, in other embodiments, two, three or more vibration modules 120 may also be arranged in the sound-generating device 100. Among them, a plurality of vibration modules 120 are arranged at intervals in the housing assembly 110 of the sound-generating device 100, and the multi-layer diaphragm 1211 module can be arranged symmetrically with respect to the central axis of the sound-generating device 100; or the multi-layer diaphragm 1211 module can be Arranged symmetrically around the central axis of the sound-generating device 100; or multiple vibration modules 120 can be distributed in an array on the housing assembly 110. The specific number and distribution method of the vibration modules 120 are not further limited in this embodiment. .

For example, in the vertical direction of the thickness direction of the sound-generating device 100, the first diaphragms 12111 of the multiple vibration modules 120 are all located on the same plane, and the second diaphragms 12112 of the multiple vibration modules 120 are all located on the same plane; The plurality of vibration modules 120 are distributed in an array along the second direction, and the first diaphragms 12111 of two adjacent vibration modules 120 are connected to each other, and the second diaphragms 12112 of two adjacent vibration modules 120 are connected to each other. are connected to each other; the sound-generating device 100 has a symmetrical structure or a centrally symmetrical structure with the central axis of the housing assembly 110 as the axis.

Figure 16 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application. As shown in Figure 16, in this embodiment, the sound-generating device 100 includes a housing component 110 and two vibration modules 120, wherein the two vibration components 121 are spaced apart in the housing component 110, and the two vibration modules 120 can be arranged symmetrically with the central axis of the sound-generating device 100 as the axis of symmetry. The structures of the two vibration modules 120 can be the same, and the diaphragms 1211 between the two vibration modules 120 are connected to each other. Among them, the diaphragms 1211 between the two vibration modules 120 can be connected to each other through the connecting piece 1213, or the diaphragms 1211 can be directly provided as an integrated structure. There is no further limitation in this embodiment, as long as they can be connected to each other.

It can be understood that in this embodiment, the top sound producing method may be used, or the middle sound producing method may be used.

By arranging two vibration modules 120, the driving force of the diaphragm 1211 can be greater, so that the diaphragm 1211 can vibrate more fully, thereby improving the working efficiency of the sound-generating device 100. In addition, by arranging two vibration modules 120, the vibration balance is better and the impact of polarization on the acoustic performance is reduced.

It should be noted that in this embodiment, the shape of the diaphragm 1211 can be similar to the shape of the diaphragm 1211 shown in FIGS. 11 and 12 , that is, the shape of the diaphragm 1211 surrounding the magnetic component 122 , or it can be The structure provided between the two magnetic components 122 is shown in Figure 17. What is shown in Figure 17 is the structure of the first diaphragm 12111. Of course, in other embodiments, what is shown in Figure 17 can also be the second diaphragm 12112. It should be noted that the figure shown in FIG. 17 only shows a schematic distribution diagram of the diaphragm 1211 and the magnetic member 1221. The shape of the diaphragm 1211 is not further limited in the embodiment of this application.

The arrow with a solid line shown in Figure 17 indicates the direction of the air flow in the sound transmission channel, and the sound outlet can be arranged in the direction pointed by the arrow with a solid line in Figure 17 . Therefore, the shape of the diaphragm 1211 is not further limited in the embodiment of the present application.

Figure 18 is a schematic structural diagram of a sound-generating device provided by an embodiment of the present application. As shown in Figure 18, in this embodiment, the sound-generating device 100 includes a housing assembly 110 and three vibration modules 120, wherein the three vibration assemblies 121 are spaced apart in the housing assembly 110, and the structures of the three vibration modules 120 can be the same, and the three vibration modules 120 can be The central axes of the sound-generating device 100 are arranged symmetrically with each other along the symmetry axis, and the diaphragms 1211 between two adjacent vibration modules 120 are connected to each other. Among them, the diaphragms 1211 between two adjacent vibration modules 120 can be connected to each other through the connecting piece 1213, or the diaphragms 1211 can be provided as an integral piece. There is no further limitation in this embodiment, as long as they can be connected to each other.

It can be understood that in this embodiment, the sound production method of the top sound can be used, the sound production method of the middle sound can also be used, or the sound production method of the mixed sound can be used, that is, a part of the sound production is using the top sound Some of them adopt the middle sound production method.

It can be understood that the greater the number of diaphragm 1211 modules, the larger the volume of the sound-generating device 100 can be, so that it can be adapted to larger electronic equipment, for example: a sound-generating device equipped with a vibration module 120 100 can be applied to electronic devices such as headphones, smart watches, and mobile phones. The sound-generating device 100 provided with two or more vibration modules 120 can be installed on larger electronic devices such as laptop computers.

It should be noted that in this embodiment, the shape of the diaphragm 1211 can be similar to the shape of the diaphragm 1211 shown in FIGS. 11 and 12 , that is, the shape of the diaphragm 1211 surrounding the magnetic component 122 , or it can be It is a structure disposed between two adjacent magnetic components 122, as shown in Figure 19. What is shown in Figure 19 is the structure of the first diaphragm 12111. Of course, in other embodiments, as shown in Figure 19 can also be the second diaphragm 12112. It should be noted that the figure shown in FIG. 19 only shows a schematic distribution diagram of the diaphragm 1211 and the magnetic member 1221. The shape of the diaphragm 1211 is not further limited in the embodiment of this application.

The arrow with a solid line shown in Figure 19 indicates the direction of the air flow in the sound transmission channel, and the sound outlet can be arranged in the direction pointed by the arrow with a solid line in Figure 19 . Therefore, the shape of the diaphragm 1211 is not further limited in the embodiment of the present application.

It should be noted that in the embodiment of the present application, the first voice coil 1212a and the second voice coil 1212b of the vibration component 121 can both correspond to high-frequency signals, or both can correspond to low-frequency signals, or one of them can correspond to high-frequency signals, and the other can correspond to high-frequency signals. One corresponds to a low-frequency signal to improve the applicable range of the sound-generating device 100 . In the embodiment of the present application, the frequency of the input signal in the first voice coil 1212a and the second voice coil 1212b is not further limited. The sound-generating device 100 in the embodiment of the present application can be used as a speaker or a microphone.

Of course, in other embodiments, the number of vibration modules 120 may be multiple; wherein, in the vertical direction of the thickness direction of the sound-generating device 100, the first diaphragms 12111 of the multiple vibration modules 120 are all located on the same plane. , the second diaphragms 12112 of the multiple vibration modules 120 are all located on the same plane; the multiple vibration modules 120 are distributed in an array along the second direction, and between the first diaphragms 12111 of two adjacent vibration modules 120 The second diaphragms 12112 of two adjacent vibration modules 120 are connected to each other; the sound-generating device 100 has a symmetrical structure or a centrally symmetrical structure with the central axis of the housing assembly 110 as the axis.

Scene 2

The sound-generating device 100 provided in the above embodiment includes a vibration module 120 and a housing assembly 110. The vibration components 121 in the vibration module 120 are each provided with two layers of diaphragms 1211 and two voice coils 1212. The magnetic components 122 each include The three magnetic components 1221 are stacked, and the central axis of the voice coil 1212 in the vibrating component 121 coincides with the central axis of the magnetic component 122. Of course, in other embodiments, the vibration module 120 can also be in other forms.

Figure 20 is a schematic structural diagram of a sound-generating device 100 provided by an embodiment of the present application.

In this embodiment, the sound-generating device 100 includes a housing assembly 110 and a vibration module 120, wherein the shape of the vibration module 120 can also be other shapes. Exemplarily, the vibration component 121 includes two layers of diaphragms 1211, namely a first diaphragm 12111 and a second diaphragm 12112; wherein the first diaphragm 12111 and the second diaphragm 12112 are spaced apart along the thickness direction of the sound-generating device 100 ; The first diaphragm 12111 is arranged close to the first housing 111, and the second diaphragm 12112 is arranged close to the second housing 112; the plurality of voice coils 1212 of the vibration assembly 121 include at least one third voice coil 1212c and at least one fourth Voice coil 1212d; wherein, at least one third voice coil 1212c is distributed at intervals in the second direction, and each third voice coil 1212c is connected to the first diaphragm 12111; at least one fourth voice coil 1212d is distributed in the second direction. Distributed at intervals, and each fourth voice coil 1212d is connected to the second diaphragm 12112; the orthographic projections of the third voice coil 1212c and the fourth voice coil 1212d in the first direction are separated from each other.

In a possible implementation, at least one end of the magnetic component 122 is fixedly connected to the housing component 110, including: a part of the magnetic component 122 located in the third voice coil 1212c, and one end close to the first housing 111 and the first housing. The body 111 is fixedly connected; the end of part of the magnetic component 122 located in the fourth voice coil 1212d close to the second housing 112 is fixedly connected to the second housing 112 .

As shown in Figure 20, there may be two third voice coils 1212c, and there may be one fourth voice coil 1212d; wherein, the orthographic projection of the fourth voice coil 1212d in the first direction is located between the two third voice coils 1212c. between the orthographic projections in the first direction, and the sound-generating device 100 has a symmetrical structure or a centrally symmetrical structure with the central axis of the housing assembly 110 as the axis. The third voice coil 1212c may be a low-frequency vibrating voice coil, and the fourth voice coil 1212d may be a high-frequency vibrating voice coil.

By arranging the two layers of diaphragms 1211 at intervals along the z-direction, setting the third voice coil 1212c as a low-frequency vibrating voice coil, and the fourth voice coil 1212d as a high-frequency vibrating voice coil, the full frequency of the sound-generating device 100 can be improved. In response, compared to arranging the high-frequency sound-generating device 100 and the low-frequency sound-generating device 100 separately, the height of the entire sound-generating device 100 can be reduced and the cost can be reduced. In addition, when the vibration directions of the diaphragms 1211 spaced apart along the z-direction are opposite, the vibration output by the entire sound-generating device 100 can be reduced, so that the sound-generating device 100 is more stable.

Of course, in other embodiments, the third voice coil 1212c can also be set as a high-frequency vibration voice coil, and the fourth voice coil 1212d can be set as a low-frequency vibration voice coil. The specific settings can be based on specific circumstances. In this embodiment without further limitation.

In a possible implementation, at least some of the magnetic members 1221 among the plurality of magnetic members 1221 are stacked along the thickness direction of the sound-generating device 100 , including: the magnetic members 1221 located in the third voice coil 1212c are arranged along the thickness of the sound-generating device 100 The magnetic components 1221 located in the fourth voice coil 1212d are stacked in the thickness direction of the sound-generating device 100; the magnetic components 1221 located in the third voice coil 1212c and the magnetic components 1221 located in the fourth voice coil 1212d are The projections in the second direction are separated from each other.

Exemplarily, part of the magnetic assembly 122 located in the third voice coil 1212c may include two magnetic parts 1221, namely a fourth magnetic part 1221d and a fifth magnetic part 1221e. The fourth magnetic part 1221d and the fifth magnetic part 1221e are mutually exclusive. Finally, the fourth magnetic component 1221d is disposed close to the first housing 111, and one end of the fourth magnetic component 1221d close to the first housing 111 is fixedly connected to the first housing 111. The magnetic conductive plate 1222 may be disposed between the fourth magnetic member 1221d and the fifth magnetic member 1221e. The magnetic conductive plate 1222 may also be disposed at both ends of the fourth magnetic member 1221d and the fifth magnetic member 1221e. In some embodiments, The first housing 111 can also be a magnetic conductive plate 1222, and the magnetic fields of the fourth magnetic component 1221d and the fifth magnetic component 1221e have opposite directions, so that the intensity of the magnetic field generated by the magnetic component 122 is greater, thereby improving the efficiency of electrical signals and sound signals. Conversion rate.

Among them, the orthographic projection of part of the magnetic component 122 located in the third voice coil 1212c in the vertical direction of the z direction may be the same as the orthographic projection of part of the magnetic component 122 located in the fourth voice coil 1212d in the vertical direction of the z direction. By overlapping, the thickness of the sound-generating device 100 can be reduced, which is conducive to the development of miniaturization of the sound-generating device 100 . Of course, in other embodiments, the orthographic projection of the part of the magnetic component 122 located in the third voice coil 1212c in the vertical direction in the z direction may be the same as the orthogonal projection of the part of the magnetic component 122 located in the fourth voice coil 1212d in the z direction. The orthographic projections in the direction can also be separated from each other. In the embodiment of the present application, this is not further limited.

For example, the first diaphragm 12111 may be located between two parts of the magnetic parts 1221 of the magnetic assembly 122, that is, the first diaphragm 12111 is located between the two parts of the magnetic parts 1221 that are passed through the two third voice coils 1212c ( The shape can be seen in Figure 15). Of course, in some embodiments, the first diaphragm 12111 can also be arranged outside the magnetic component 122 (see Figure 21); the solid line shown in Figure 21 The arrow indicates the direction of the air flow in the sound transmission channel, and the sound outlet can be set in the direction pointed by the arrow with a solid line in Figure 21. Therefore, the shape of the first diaphragm 12111 is not further limited in the embodiment of the present application.

The first diaphragm 12111 and the third voice coil 1212c can be fixedly connected through a connecting piece 1213 (not shown in the figure), wherein the connecting piece 1213 between the first diaphragm 12111 and the third voice coil 1212c can be as follows The structure shown in Figure 6, in which one end of the connecting piece 1213 is fixedly connected to the third voice coil 1212c, and the other end is fixedly connected to the first diaphragm 12111 (see the first voice coil 1212a and the first diaphragm 12111 shown in Figure 5 Diaphragm 12111 connection method). The number of connecting pieces 1213 corresponding to each third voice coil 1212c may be two, three or more, which is not further limited in this embodiment.

In this embodiment, the vibration assembly 121 may also include support members 1214, where the number of support members 1214 may be the same as the number of voice coils 1212, that is, the number of support members 1214 is three, and the three support members 1214 are respectively It is provided on the outside of the two third voice coils 1212c and one fourth voice coil 1212d, and one end is fixedly connected to the magnetic component 122. The end of the support member 1214 close to the voice coil 1212 is fixedly connected to the diaphragm 1211. The support member 1214 is used for support. The diaphragm 1211 can vibrate stably. In addition, the support member 1214 can support one end of the diaphragm 1211 close to the magnetic component 122, so that the effective vibration area of the diaphragm 1211 is larger, thereby improving the electric power of the sound-generating device 100. signal and sound signal conversion rate.

It should be noted that FIG. 15 and FIG. 21 only show schematic diagrams of the positional relationship between the magnetic component 1221 and the diaphragm 1211, and the specific shapes of the diaphragm 1211 and the magnetic component 122 are not further limited.

In this embodiment, part of the magnetic component 122 located in the fourth voice coil 1212d includes at least one magnetic component. The at least one magnetic component is stacked and arranged, and a magnetic conductive plate 1222 is provided between adjacent magnetic components to increase the number of magnetic components. 122 magnetic field strength. Exemplarily, part of the magnetic component 122 located in the fourth voice coil 1212d includes a magnetic component 1221, which is the sixth magnetic component 1221f, and two magnetic permeable plates 1222, wherein the sixth magnetic component located in the fourth voice coil 1212d One end of the component 1221f close to the second housing 112 is fixedly connected to the second housing 112. The second housing 112 can be one of the magnetic conductive plates 1222; the sixth magnetic component 1221f located in the fourth voice coil 1212d is away from the second housing. One end of the body 112 is also provided with a magnetic conductive plate 1222.

Exemplarily, the second diaphragm 12112 may be surrounding the outside of part of the magnetic component 122 located in the fourth voice coil 1212d (as shown in FIG. 22 ). The arrow with a solid line shown in FIG. 22 represents the sound transmission channel. In the direction of air flow, the sound outlet can be set in the solid line in Figure 22 The direction the arrow points. And the second diaphragm 12112 and the fourth voice coil 1212d can be fixedly connected through the connecting piece 1213. The specific connection method can be seen in the connection method between the second diaphragm 12112 and the second voice coil 1212b in Figure 5. In this article The description will not be repeated in the examples. This can ensure that the vibration space of the second diaphragm 12112 is larger, thereby ensuring the maximum amplitude of the second diaphragm 12112 and improving work efficiency.

As shown in FIG. 22 , the second diaphragm 12112 is disposed between the two parts of the magnetic components 122 of the first diaphragm 12111 and surrounds the outside of the part of the magnetic components 122 located in the fourth voice coil 1212d. Of course, in other embodiments, as shown in FIG. 23 , the second diaphragm 12112 can also be arranged around the outside of the two parts of the magnetic assembly 122 of the first diaphragm 12111 and around the part located inside the fourth voice coil 1212d. outside of magnetic assembly 122 . Therefore, the arrangement manner of the second diaphragm 12112 is not further limited in the embodiment of the present application. The arrow with a solid line shown in Figure 23 indicates the direction of the air flow in the sound transmission channel, and the sound outlet can be arranged in the direction pointed by the arrow with a solid line in Figure 23.

The above embodiment introduces an embodiment in which the number of the third voice coil 1212c in the sound-generating device 100 is two, and the number of the fourth voice coil 1212d is one. Of course, in other embodiments, the third voice coil 1212c can also be used. and the number of the fourth voice coil 1212d is set to other values. As shown in Figure 24, there is one third voice coil 1212c and two fourth voice coils 1212d; among them, the positive direction of the third voice coil 1212c in the first direction The projection is located between the orthographic projections of the two fourth voice coils 1212d in the first direction, and the sound-generating device 100 has a symmetrical structure or a centrally symmetrical structure with the central axis of the housing assembly 110 as the axis.

In some embodiments, the first diaphragm 12111 can be surrounding the outside of part of the magnetic component 122 located in the third voice coil 1212c (the shape can be seen in Figure 9). Of course, in some embodiments, it can also be The first diaphragm 12111 is disposed on both sides of the magnetic component 122 located in the third voice coil 1212c (see Figure 15).

The first diaphragm 12111 and the third voice coil 1212c can be fixedly connected through a connecting piece 1213 (not shown in the figure). The connecting piece 1213 between the first diaphragm 12111 and the third voice coil 1212c can be as follows: The structure shown in Figure 6, in which one end of the connecting piece 1213 is fixedly connected to the third voice coil 1212c, and the other end is fixedly connected to the first diaphragm 12111 (see the first voice coil 1212a and the first diaphragm 12111 shown in Figure 5 Diaphragm 12111 connection method). The number of connecting pieces 1213 corresponding to the third voice coil 1212c may be two, three or more, which is not further limited in this embodiment.

In this embodiment, the second diaphragm 12112 can be surrounding the outside of part of the magnetic component 122 located in the fourth voice coil 1212d (as shown in FIG. 25), and the gap between the fourth voice coil 1212d and the second diaphragm 12112 can be fixedly connected through the connecting piece 1213. For the specific connection method, please refer to the connection method between the first diaphragm 12111 and the first voice coil 1212a or the second diaphragm 12112 and the second voice coil 1212b in Figure 5. In this embodiment The explanation will not be repeated in the example. By arranging the connecting piece 1213, the vibration space of the diaphragm 1211 can be ensured to be larger, thereby ensuring the maximum amplitude of the diaphragm 1211 and improving work efficiency.

In this embodiment, as shown in FIG. 25 , the two parts of the two second diaphragms 12112 can be spaced apart from each other. In this case, part of the magnetic part 1221 of the magnetic component 122 located in the third voice coil 1212c is at z. The upward height is relatively large and is close to the second housing 112 . Of course, in other embodiments, as shown in FIG. 26 , the two parts of the second diaphragm 12112 located around the two fourth voice coils 1212d can also be connected into a whole, and the second diaphragm 12112 can be surrounded by It is located outside part of the magnetic component 1221 in the third voice coil 1212c, thereby further increasing the effective vibration area of the second diaphragm 12112. The arrangement manner of the second diaphragm 12112 is not further limited in the embodiment of the present application.

The arrows with solid lines shown in Figures 25 and 26 represent the direction of the air flow in the sound transmission channel, and the sound outlet can be disposed in the direction pointed by the arrows with solid lines in Figures 25 and 26 .

In the embodiment of the present application, by arranging one third voice coil 1212c and two fourth voice coils 1212d, the design flexibility of the sound-generating device 100 can be improved, and the vibration balance of the fourth voice coil 1212d can be better.

In addition, the sound-generating device 100 in the embodiment of the present application can adopt a top-out sound and a middle sound-out method, wherein the middle sound is emitted from the second gap between the first diaphragm 12111 and the second diaphragm 12112. The sound comes from h2. When the middle sound is used, the second gap h2 between the first diaphragm 12111 and the second diaphragm 12112 can be directly connected to the sound transmission channel through the sound hole, thereby reducing the bending of the sound transmission channel pipe. Fold, improve the sound environment of electronic equipment, enhance high-frequency characteristics, and thereby improve sound quality.

It should be noted that in the above scenarios one and two, the magnetic component can be a magnet. Of course, in other embodiments, the magnetic component can also be other magnetic materials, which are not further limited in this embodiment.

Scene three

In the embodiment of the present application, an electronic device 1000 is provided. The electronic device 1000 is provided with any sound-generating device 100 in the above-mentioned scene one or scene two. Since the sound-generating device 100 has the characteristics of small size and high working efficiency, it can It is beneficial to improve the sound quality of the electronic device 1000 and is beneficial to the miniaturization development of the electronic device 1000.

In an optional implementation, FIG. 27 is a partial structural diagram of an electronic device provided by an embodiment of the present application. As shown in Figure 27, the electronic device 1000 includes a housing 200. The housing 200 is arranged outside the sound transmission device 100. The housing 200 is provided with a sound transmission channel 210. The sound generation device 100 is provided on one side of the sound transmission channel 210. One end of the sound channel 210 close to the sound-generating device 100 is flush with the sound-output hole 114 of the sound-generator 100 . The sound-output hole 114 is connected to the second gap h2 between the first diaphragm 12111 and the second diaphragm 12112 .

By arranging the sound transmission channel 210 of the electronic device 1000 flush with the sound outlet 114 of the sound-generating device 100, the sound emitted from the sound-generating device 100 can directly enter the sound transmission channel 210. Compared with the related art, in this way The distance between the sound hole 114 of the sound-generating device and the sound transmission channel 210 can be reduced, the sound environment of the electronic device can be improved, the high-frequency characteristics can be improved, and the sound quality can be improved.

It should be noted that electronic devices in embodiments of the present application include, but are not limited to, handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to wireless modems. Exemplarily, the electronic device may include a cellular phone, a smartphone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a vehicle-mounted computer, or a smart phone. Home appliances, speakers, headphones, smart watches, smart wristbands, pedometers and other electronic devices with call functions.

In the description of the embodiments of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. Indirect connection through an intermediary can be the internal connection between two elements or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

The terms "first", "second", "third", "fourth", etc. (if present) in the description and claims of the embodiments of this application and the above-mentioned drawings are used to distinguish similar objects, and It is not necessary to describe a specific order or sequence.

Claims

A sound-generating device, characterized in that it includes: a shell assembly, and at least one vibration module is disposed in an inner cavity structure surrounded by the shell assembly; wherein,

Each of the vibration modules includes a vibration component and a magnetic component, and in the first direction, the magnetic component penetrates the vibration component;

The vibration component includes a plurality of voice coils, and a multi-layer diaphragm spaced apart along the first direction, and each layer of the diaphragm is connected to at least one of the voice coils;

The magnetic component includes a plurality of magnetic components, at least two of the magnetic components are stacked in the first direction, and at least one layer of the diaphragm is located on at least two of the stacked components. The outer peripheral side of a magnetic piece;

And the at least two stacked magnetic components are inserted into at least one of the voice coils, and in the first direction, the polarities of the two adjacent stacked magnetic components are opposite;

The first direction is the thickness direction of the sound-generating device.
The sound-generating device according to claim 1, characterized in that there is a first gap between the diaphragm close to the inner bottom wall of the housing assembly and the inner bottom wall of the housing assembly;

There is a second gap between two adjacent diaphragms;

There is a third gap between the diaphragm close to the inner top wall of the housing assembly and the inner top wall of the housing assembly;

At least one of the first gap, the second gap and the third gap is a sound output channel of the sound-generating device;

A sound outlet is provided on part of the housing wall of the housing assembly corresponding to the sound outlet channel.
The sound-generating device according to claim 2, characterized in that when the sound outlet is located in the portion of the housing wall of the housing assembly corresponding to the first gap or the third gap, the sound-generating device has The sound production method is top sound;

When the sound-emitting hole is located in the housing wall of the housing assembly corresponding to the second gap, the sound-emitting device produces sound in the middle.
The sound-generating device according to any one of claims 1 to 3, wherein the vibration component includes two layers of the diaphragm, namely a first diaphragm and a second diaphragm; wherein,

The first diaphragm and the second diaphragm are spaced apart along the first direction;

The first diaphragm is disposed close to the inner bottom wall of the housing assembly, and the second diaphragm is disposed close to the inner top wall of the housing assembly.
The sound-generating device according to claim 4, wherein the vibration component includes two voice coils, namely a first voice coil and a second voice coil; wherein,

The orthographic projection of the first voice coil in the first direction is at least partially coincident with the orthographic projection of the second voice coil in the first direction.
The sound-generating device according to claim 5, characterized in that the first diaphragm is connected to the first voice coil, and the second diaphragm is connected to the second voice coil;

The plurality of magnetic pieces of the magnetic assembly are stacked in the first direction, and the plurality of stacked magnetic pieces are inserted into the first voice coil and the second voice coil.
The sound-generating device according to claim 5 or 6, characterized in that the number of the magnetic parts is three; wherein,

The three magnetic components are stacked in the first direction, and the three stacked magnetic components are inserted into the first voice coil and the second voice coil. The stacked arrangement Two adjacent magnetic pieces among the plurality of magnetic pieces have opposite polarities.
The sound-generating device according to any one of claims 5-7, wherein the central axes of the first voice coil and the second voice coil coincide with each other;

The central axis of the magnetic component coincides with the central axis of the first voice coil and the second voice coil.
The sound-generating device according to any one of claims 5 to 8, characterized in that the first diaphragm is an integral piece, and the first diaphragm is surrounded on the outside of the first voice coil; or,

The first diaphragm includes a plurality of first sub-diaphragms, the plurality of first sub-diaphragms are arranged outside the voice coil, and two adjacent first sub-diaphragms are connected to each other.
The sound-generating device according to any one of claims 5 to 9, characterized in that the second diaphragm is an integral piece, and the second diaphragm is surrounded on the outside of the second voice coil; or,

The second diaphragm includes a plurality of second sub-diaphragms, the plurality of second sub-diaphragms are arranged outside the voice coil, and two adjacent second sub-diaphragms are connected to each other.
The sound-generating device according to any one of claims 6-10, characterized in that the number of said vibration modules is one; wherein,

The central axis of the vibration module and the central axis of the housing assembly coincide with each other.
The sound-generating device according to any one of claims 6-10, characterized in that the number of said vibration modules is multiple; wherein,

In the second direction, the first diaphragms of multiple vibration modules are located on the same plane, and the second diaphragms of multiple vibration modules are located on the same plane;

A plurality of the vibration modules are distributed in an array in the second direction, and the first diaphragms of two adjacent vibration modules are connected to each other. The two adjacent vibration modules The second diaphragms are connected to each other;

The second direction is a direction perpendicular to the thickness direction of the sound-generating device.
The sound-generating device according to claim 4, wherein the plurality of voice coils of the vibration component include at least one third voice coil and at least one fourth voice coil; wherein,

At least one of the third voice coils is distributed at intervals in the second direction, and each of the third voice coils is connected to the first diaphragm;

At least one of the fourth voice coils is distributed at intervals in the second direction, and each of the fourth voice coils is connected to the second diaphragm;

Orthographic projections of the third voice coil and the fourth voice coil in the first direction are separated from each other;

The second direction is a direction perpendicular to the thickness direction of the sound-generating device.
The sound-generating device according to claim 13, wherein the number of the magnetic components is at least three, and two of the at least three magnetic components are stacked;

The two stacked magnetic components are inserted into the third voice coil;

The remaining magnetic elements among at least three magnetic elements are inserted into the fourth voice coil.
The sound-generating device according to claim 14, characterized in that the magnetic component located in the third voice coil and the magnetic component located in the fourth voice coil are arranged in the first direction. The projections are separated from each other.
The sound-generating device according to claim 14 or 15, wherein the third voice coil is close to the inner bottom wall of the housing assembly, and the fourth voice coil is close to the inner top wall of the housing assembly; in,

One end of the magnetic component located in the third voice coil close to the inner bottom wall is connected to the inner bottom wall;

One end of the magnetic component located in the fourth voice coil close to the inner top wall is connected to the inner top wall.
The sound-generating device according to claim 16, characterized in that there are two third voice coils and one fourth voice coil; wherein,

The orthographic projection of the fourth voice coil in the first direction is located between the orthographic projections of the two third voice coils in the first direction.
The sound-generating device according to claim 17, characterized in that there are five magnetic parts; wherein,

Each third voice coil is provided with two stacked magnetic components, and the magnetism of the two magnetic components is opposite;

One of the magnetic parts is disposed inside the fourth voice coil.
The sound-generating device according to claim 16, characterized in that there is one third voice coil and two fourth voice coils; wherein,

The orthographic projection of the third voice coil in the first direction is located between the orthographic projections of the two fourth voice coils in the first direction.
The sound-generating device according to claim 19, characterized in that there are four magnetic parts; wherein,

Two stacked magnetic components are provided in the third voice coil, and the two magnetic components have opposite magnetism;

Each fourth voice coil is provided with one magnetic component.
The sound-generating device according to any one of claims 13 to 20, wherein the third voice coil is a low-frequency vibrating voice coil, and the fourth voice coil is a high-frequency vibrating voice coil.
The sound-generating device according to any one of claims 1-21, wherein the magnetic component further includes a magnetic conductive plate; wherein,

In the first direction, the magnetic conductive plates are provided at both ends of each magnetic component.
The sound-generating device according to any one of claims 1-22, wherein the vibration component further includes a plurality of connecting pieces; wherein,

The connecting piece includes a first connecting part, a second connecting part and a third connecting part, and the three connecting parts are provided between the first connecting part and the second connecting part;

One end of the third connecting part is fixedly connected to the first connecting part, and the other end extends in a direction close to the second connecting part and is fixedly connected to the second connecting part;

In the first direction, there is a gap between the first connecting part and the second connecting part.
The sound-generating device according to claim 23, characterized in that the diaphragm and the voice coil are connected through the connecting piece; wherein,

One of the first connection part and the second connection part is connected to one end of the voice coil, and the other of the first connection part and the second connection part is connected to the diaphragm. .
The sound-generating device according to any one of claims 1-24, wherein the vibration component further includes a support member; wherein,

The support member is arranged around the outside of the magnetic component, and one end of the diaphragm close to the support member is connected to the support member;

The diaphragms located at different layers are connected to the support member at different locations.
The sound-generating device according to any one of claims 1-25, wherein the housing assembly includes a first housing, a second housing and a third housing; wherein,

In the first direction, the third housing is disposed between the first housing and the second housing, the height of the third housing is greater than zero, and part of the outer side of the diaphragm It is arranged between the first housing and the third housing, and part of the outer side of the diaphragm is arranged between the second housing and the third housing.
The sound-generating device according to any one of claims 1-26, characterized in that the sound-generating device has a symmetrical structure or a centrally symmetrical structure with the central axis of the housing assembly as an axis.
The sound-generating device according to any one of claims 1-27, wherein the magnetic component is a magnet.
An electronic device, characterized by at least including the sound-generating device according to any one of claims 1-28.
The electronic equipment according to claim 29, characterized in that the electronic equipment includes a housing, the housing is arranged outside the sound-generating device, a sound transmission channel is provided on the housing, and the sound-generating device It is arranged on one side of the sound transmission channel, and one end of the sound transmission channel close to the sound generating device is flush with the sound outlet of the sound generating device.