CN114745644B - Sound-generating vibration device and electronic device - Google Patents

Abstract

The invention discloses a sound-generating vibration device and an electronic device, wherein the sound-generating vibration device comprises a shell, a vibration system, a magnetic circuit system and a coil, the shell is provided with a receiving space, the vibration system is arranged in the receiving space, the vibration system comprises a voice coil, the magnetic circuit system is suspended in the receiving space, the magnetic circuit system comprises an external magnetic circuit structure and an internal magnetic circuit structure, a magnetic gap is formed between the external magnetic circuit structure and the internal magnetic circuit structure, the voice coil is suspended in the magnetic gap, the voice coil vibrates under the drive of the magnetic circuit system, the coil is fixedly connected to the shell, the coil part is arranged in the magnetic gap, the coil is used to drive the magnetic circuit system to vibrate, wherein the voice coil avoids the coil when vibrating, so that the space of the magnetic gap generated by the magnetic circuit system can be used to realize the installation of the coil in the shell, and the space occupied by the coil in the width direction of the shell is reduced, thereby making the spatial arrangement of various components in the sound-generating vibration device more reasonable, so as to increase the magnetic field strength generated by the magnetic circuit system.

Description

Sound-generating vibration device and electronic device

Technical Field

The present invention relates to the technical field of electroacoustic conversion, and in particular to a sound-generating vibration device and an electronic device using the sound-generating vibration device.

Background Art

Electronic products and devices, especially smart glasses, usually need to have both audio experience and vibration tactile experience functions, so the vibration system and the coil are integrated into one, that is, the vibration system and the coil use a common magnetic circuit system.

When the coil is energized, the magnetic circuit system can cooperate with the coil to achieve vibration within the housing space of the shell. In order to fix the coil in the shell, the coil is fixedly installed on the inner wall of the shell. However, this installation position of the coil will cause the coil to occupy a certain space in the shell along its width direction, resulting in the magnets in the magnetic circuit system, such as the center magnet or the side magnet, being unable to increase in size along the width direction of the shell, thereby failing to increase the magnetic field strength generated by the magnetic circuit system.

The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art.

Summary of the invention

The main purpose of the present invention is to provide a sound-generating vibration device and an electronic device, which aims to provide an avoidance space inside the magnetic circuit system, and allow the coil to pass through the avoidance space and be installed in the accommodation space of the shell, so that the coil can utilize the installation space of the magnetic circuit system to install itself in the accommodation space, thereby solving the technical problem of the prior art that the coil is installed on the inner wall of the shell, resulting in occupying the space of the shell in its width direction.

To achieve the above-mentioned purpose, the present invention proposes a sound-generating vibration device, which includes a shell, a vibration system, a magnetic circuit system and a coil, the shell is provided with a receiving space, the vibration system is arranged in the receiving space, the vibration system includes a voice coil, the magnetic circuit system is suspended in the receiving space, the magnetic circuit system includes an external magnetic circuit structure and an internal magnetic circuit structure, a magnetic gap is formed between the external magnetic circuit structure and the internal magnetic circuit structure, the voice coil is suspended in the magnetic gap, the voice coil vibrates under the drive of the magnetic circuit system, the coil is fixedly connected to the shell, the coil part is arranged in the magnetic gap, the coil is used to drive the magnetic circuit system to vibrate, wherein the voice coil avoids the coil when vibrating.

Optionally, the magnetic circuit system also includes a yoke, which is arranged in the accommodation space, and the external magnetic circuit structure and the internal magnetic circuit structure are both arranged on the yoke. The yoke is provided with an avoidance portion, and the avoidance portion is arranged corresponding to the magnetic gap. The coil portion is passed through the avoidance portion and is arranged in the magnetic gap.

Optionally, the magnetic circuit system has a long axis direction, two magnetic gaps arranged in parallel along the long axis direction are formed between the outer magnetic circuit structure and the inner magnetic circuit structure, and the coil is arranged corresponding to the magnetic gaps along the long axis direction.

Optionally, the coils are arranged in pairs in the two magnetic gaps, and at least one coil is arranged in the same magnetic gap.

Optionally, the coil includes two opposite long sides, one of the long sides is located in the magnetic gap, and the other long side is connected to the shell, and the axial direction of the coil is perpendicular to the vibration direction of the magnetic circuit system.

Optionally, the sound-generating vibration device also includes a circuit board, which is arranged in the accommodation space and on the side of the magnetic yoke facing away from the vibration system. The circuit board is electrically connected to the lead and is partially exposed to the outside of the shell to form a conductive interface for connecting to an external circuit.

Optionally, the sound-generating vibration device further comprises an elastic member, one end of the elastic member is connected to the yoke, and the other end of the elastic member is connected to the cavity wall of the receiving space, so that the yoke is suspended in the receiving space.

Optionally, the sound-generating vibration device further includes a damping member, wherein the damping member is disposed between the magnetic yoke and the housing, and the damping member is fixedly connected to the magnetic yoke.

Optionally, the vibration system also includes a diaphragm, the periphery of which is connected to the shell, one end of the voice coil is connected to the diaphragm, and the end of the voice coil facing away from the diaphragm is suspended in the magnetic gap, and a plurality of conductive parts are provided on the side of the diaphragm close to the voice coil, and the plurality of conductive parts are arranged at intervals along the periphery of the diaphragm and are electrically connected to the voice coil, and a plurality of conductive inserts are installed in the shell, the conductive inserts are arranged corresponding to the conductive parts, one end of the conductive insert is electrically connected to the conductive part, and the other end of the conductive insert is used to connect to an external circuit.

To achieve the above objective, an embodiment of the present invention provides an electronic device, which includes the sound-generating vibration device as described above.

The technical solution of the present invention forms a magnetic gap through the inner and outer magnetic circuit structures of the magnetic circuit system and the inner magnetic circuit structure, and the coil will be located in the magnetic gap, that is, when the coil is fixedly connected to the shell, the coil part will be arranged in the magnetic gap. In this way, the coil can be arranged inside the magnetic circuit system, and the space of the magnetic gap generated by the magnetic circuit system can be used to realize the installation of the coil in the shell, so that the coil does not need to be installed on the inner wall of the shell, reducing the space occupied by the coil in the width direction of the shell, thereby making the spatial arrangement of various components in the sound-generating vibration device more reasonable, so as to increase the magnetic field strength generated by the magnetic circuit system.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

FIG1 is a schematic structural diagram of an embodiment of a sound-generating vibration device of the present invention;

FIG2 is a schematic structural diagram of another embodiment of the sound-generating vibration device of the present invention;

FIG3 is a cross-sectional schematic diagram of an embodiment of a sound-generating vibration device of the present invention;

FIG4 is an exploded schematic diagram of an embodiment of a sound-generating vibration device of the present invention;

FIG5 is a cross-sectional schematic diagram of the housing, elastic member, yoke, inner magnetic circuit structure, outer magnetic circuit structure and coil shown in FIG4 ;

FIG6 is a schematic diagram of the structure of the yoke shown in FIG5 ;

FIG. 7 is a schematic structural diagram of the diaphragm, voice coil, housing, and conductive insert shown in FIG. 4 .

Description of Figure Numbers:

The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

The present invention provides a sound-generating vibration device 100 .

In an embodiment of the present invention, as shown in Figures 1 to 4, the sound-generating vibration device 100 includes a shell 10, a vibration system 30, a magnetic circuit system 50 and a coil 70. The shell 10 is provided with a receiving space, the vibration system 30 is arranged in the receiving space, the vibration system 30 includes a voice coil 33, the magnetic circuit system 50 is suspended in the receiving space, the magnetic circuit system 50 includes an external magnetic circuit structure 55 and an internal magnetic circuit structure 53, a magnetic gap is formed between the external magnetic circuit structure 55 and the internal magnetic circuit structure 53, the voice coil 33 is suspended in the magnetic gap, the voice coil 33 vibrates under the drive of the magnetic circuit system 50, the coil 70 is fixedly connected to the shell 10, and the coil 70 is partially arranged in the magnetic gap, and the coil is used to drive the magnetic circuit system 50 to vibrate, wherein the voice coil 33 avoids the coil 70 when vibrating.

In this embodiment, the housing 10 of the sound-generating vibration device 100 is used to install, fix and support components such as the vibration system 30, the magnetic circuit system 50 and the coil 70, that is, the housing 10 provides an installation base for components such as the vibration system 30, the magnetic circuit system 50 and the coil 70. In order to facilitate the installation and protection of components such as the vibration system 30, the magnetic circuit system 50 and the coil 70, the housing 10 has a receiving space. Optionally, the structure of the housing 10 can be a structure such as a mounting shell, a box body or a box body with a receiving space.

It is understandable that the housing 10 can be an integral structure or a split structure. As shown in FIG4 , the housing 10 includes a first housing 11 and a second housing 13, that is, the housing 10 is split, and the first housing 11 and the second housing 13 are connected to form an integral structure. Of course, in other embodiments, the housing 10 can also be formed by an integral molding method, which is not limited here.

Optionally, part of the structure of the first shell 11 of the shell 10 and the second shell 13 are both metal parts, and the first shell 11 and the second shell 13 are sealed together to define a receiving space, that is, the first shell 11 and the second shell 13 are made of metal material, so that the overall structure of the shell 10 is made of metal material.

It is understandable that the first shell 11 and the second shell 13 of the shell 10 can be made of thinner steel sheets, so that the shell 10 can be designed to be thinner, thereby greatly increasing the volume of the accommodation space in the shell 10, effectively increasing the volume of the vibration system 30, the magnetic circuit system 50 and the coil 70 in the accommodation space, and thus improving the acoustic performance of the sound-generating vibration device 100. At the same time, the vibration system 30 is fixed in the shell 10, so that heat dissipation can be achieved through the shell 10 made of metal material, thereby improving the heat dissipation performance of the sound-generating vibration device 100.

It can be understood that the vibrating magnetic circuit system 50 can be an inner magnetic circuit structure 53, an outer magnetic circuit structure 55, or both an inner magnetic circuit structure 53 and an outer magnetic circuit structure 55, which is not specifically limited here.

It can be understood that the vibration direction of the magnetic circuit system 50 is set in parallel with the vibration direction of the vibration system 30, that is, the vibration system 30 vibrates under the drive of the magnetic circuit system 50, and the vibration direction of the magnetic circuit system 50 needs to be set in parallel with the vibration direction of the vibration system 30. In this way, when the vibration system 30 and the magnetic circuit system 50 vibrate at the same time, the vibration directions of the two remain opposite, so that the vibration effect of the magnetic circuit system 50 can offset the vibration effect of the vibration system 30. In addition, the parallel vibration directions of the magnetic circuit system 50 and the vibration system 30 can effectively avoid interference between the internal structure of the sound-generating vibration device 100 and affect the structural stability.

The sound-generating vibration device 100 of the present invention is provided with a receiving space in the shell 10, so as to utilize the receiving space to install, fix and protect the vibration system 30, the magnetic circuit system 50 and the coil 70, and at the same time, the coil 70 and the vibration system 30 share the magnetic circuit system 50, thereby effectively improving the integration of the sound-generating vibration device 100 and saving the space occupied by the sound-generating vibration device 100 in the electronic device; at the same time, by fixing the coil 70 to the shell 10 and suspending the magnetic circuit system 50 in the receiving space, the coil 70 can be used to drive the magnetic circuit system 50 to vibrate in the receiving space to realize the motor vibration function, so that the sound-generating vibration device 100 has a vibration tactile experience function, and at the same time, when the vibration system 30 generates sound and generates vibration, the coil 70 can drive the magnetic circuit system 50 to vibrate to offset the vibration generated by the vibration system 30, and the vibration function and the sound-generating function of the sound-generating vibration device 100 can be realized separately without interfering with each other, so that the sound-generating vibration device 100 has both audio experience and vibration tactile experience functions, thereby improving the user experience. At the same time, the coil 70 is partially located in the magnetic gap and fixedly installed in the accommodation space. Compared with the technical solution of fixing the coil 70 on the two inner walls of the shell 10, the coil 70 of the present application can utilize the space of the magnetic gap formed by the magnetic circuit system 50 to achieve its installation in the accommodation space, without occupying the space of the shell 10 along its width direction. Therefore, the magnet in the magnetic circuit system 50 can increase the size in the width direction, thereby achieving an enhancement of the magnetic field.

In one embodiment of the present invention, in combination with Figures 3, 5 and 6, the magnetic circuit system 50 also includes a yoke 51, which is suspended in the accommodation space, and the external magnetic circuit structure 55 and the internal magnetic circuit structure 53 are both arranged on the yoke 51. The yoke 51 is provided with an avoidance portion 511, and the avoidance portion 511 is arranged corresponding to the magnetic gap. The coil 70 is partially inserted into the avoidance portion 511 and is arranged in the magnetic gap.

It can be understood that the inner magnetic circuit structure 53 includes a central magnet 531 and a central magnetic conductive plate 553. The central magnet 531 is fixedly mounted on the magnetic yoke 51 to be suspended in the receiving space, and the central magnetic conductive plate 533 is disposed on a side of the central magnet 531 away from the magnetic yoke.

It can be understood that the shape of the avoidance portion 511 matches the projection shape of the coil 70 in the shell 10 along the vibration direction, and the avoidance portion 511 can be a avoidance hole, a avoidance groove or a avoidance gap; when the avoidance portion 511 is a avoidance hole, the avoidance hole can be an oblong hole, and its opening degree can be selected according to the avoidance space required for the actual installation of the coil 70; when the avoidance portion is a avoidance groove, the avoidance groove can be a long strip groove, and the degree of depression can be selected according to the avoidance space required for the actual installation of the coil 70; when the avoidance portion 511 is a avoidance gap, the avoidance gap can be opened at the edge of the yoke 51, and the degree of opening can be selected according to the avoidance space required for the actual installation of the coil 70.

In the present embodiment, the magnetic circuit structure 57 also includes a yoke 51. It can be understood that, at the same time, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 can be suspended in the receiving space through the yoke 51. When the coil 70 is energized with the external circuit, the coil 70 can drive the yoke 51, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 suspended in the receiving space to vibrate to offset the vibration of the vibration system 30. That is, the force of the vibration generated by the yoke 51, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 and the force of the vibration generated by the voice coil 33 of the vibration system 30 will always remain in opposite directions. At the same time, when the vibration system 30 is not working, the two coils 70 can also be energized as usual, so that the yoke 51, the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 can continue to vibrate, giving the user a vibration tactile experience function and improving the user's experience. At the same time, the magnetic gap will correspond to the avoidance portion 511 of the yoke 51 to meet the avoidance space required when the coil 70 is installed.

In one embodiment of the present invention, as shown in Figure 6, the yoke 51 is further provided with a wiring portion 513, the wiring portion 513 is connected to the avoidance portion 511, and the interior of the wiring portion 513 is connected to the interior of the avoidance portion 511, and the coil 70 is provided with a lead wire, which is passed through the avoidance portion 511.

In the present embodiment, the coil 70 realizes the function of power supply by providing a lead wire, and when the lead wire needs to be electrically connected to the circuit board 60, a wiring space needs to be provided to rationally wire it and ensure that it will not be damaged by other components. Therefore, a wiring portion 513 is provided, and a wiring space is formed in the wiring portion 513, so as to ensure the durability of the sound-generating vibration device 100. It is explained here that the wiring portion 513 can be formed in a through groove on the yoke, and when the interior of the wiring portion 513 is connected to the interior of the avoidance portion 511, the workshop can realize the processing of the wiring portion 513 and the avoidance portion 511 at the same time.

In this embodiment, the magnetic circuit system 50 also includes a yoke 51. It can be understood that the yoke 51 is used to achieve magnetic conduction and magnetic concentration effects on the external magnetic circuit structure 55 and the internal magnetic circuit structure 53; at the same time, the yoke 51 is provided with an avoidance portion 511, and the avoidance portion 511 is arranged corresponding to the magnetic gap, that is, part of the coil 70 will pass through the avoidance portion 511 arranged in the magnetic gap, thereby ensuring the avoidance space required for the coil 70 to pass through the yoke 51.

In one embodiment of the present invention, as shown in FIG. 5 , the magnetic circuit system 50 has a long axis direction, and two magnetic gaps arranged in parallel along the long axis direction are formed between the outer magnetic circuit structure 55 and the inner magnetic circuit structure 53 , and the coil 70 is arranged corresponding to the magnetic gap along the long axis direction.

In this embodiment, coils 70 can be arranged in two magnetic gaps, and the charging direction of the coil 70 in one magnetic gap is opposite to that of the coil in the other magnetic gap. The coil 70 is in the shape of an elongated strip. Therefore, the coil 70 is arranged in the long axis direction of the magnetic circuit system 50 to ensure the installation space requirement for the length of the coil 70.

In one embodiment of the present invention, as shown in FIG. 5 , the coils 70 are arranged in pairs in two magnetic gaps, and at least one coil 70 is arranged in the same magnetic gap.

In this embodiment, at least one coil 70 is arranged in the same magnetic gap, that is, there will be at least two coils 70 under two magnetic gaps. It is explained here that the number of coils 70 in the same magnetic gap can be one, two or three, and is not specifically limited here. With the arrangement of multiple coils 70, the length of the coil 70 can be shortened during processing to improve the workshop's fault tolerance when processing the coil 70.

In one embodiment of the present invention, as shown in FIG. 5 , the coil 70 includes two opposite long sides, wherein one long side is fixedly connected to the shell, and the other long side is located in the magnetic gap, and the axial direction of the coil 70 is perpendicular to the vibration direction of the magnetic circuit system 50 .

In this embodiment, the coil is arranged in the magnetic gap along the vibration direction of the magnetic circuit system 50, that is, the axial direction of the coil 70 is perpendicular to the vibration direction of the magnetic circuit system 50. The coil 70 is an annular structure, and the coil 70 includes two long sides, one of which is arranged in the magnetic gap, and the other is fixedly connected to the second shell 13.

In one embodiment of the present invention, as shown in Figure 4, the sound-generating vibration device 100 also includes a circuit board 60, which is disposed in the accommodating space. The circuit board 60 is fixed to the shell 10 and is disposed on the side of the yoke 51 away from the vibration system 30. The circuit board 60 is electrically connected to the coil 70, and is partially exposed to the outside of the shell 10 and forms a conductive interface 61 for connecting to an external circuit.

In this embodiment, the circuit board 60 can be a flexible circuit board, so that one end of the circuit board 60 can be adhered to the bottom wall of the receiving space of the shell 10, and the other end of the circuit board 60 faces the coil 70 and is electrically connected to the coil 70, and part of the structure extends to the outside of the shell 10 to achieve conduction of the circuit with the outside world; it is explained here that the electrical connection method between the coil 70 and the circuit board 60 is a series connection, and the current directions of the coils 70 on both sides are opposite.

In one embodiment of the present invention, as shown in FIG. 4 , the sound-generating vibration device 100 further includes an elastic member 90 , one end of the elastic member 90 is connected to the yoke 51 , and the other end of the elastic member 90 is connected to the cavity wall of the receiving space so that the yoke 51 is suspended in the receiving space.

In this embodiment, by providing the elastic member 90, on the one hand, the elastic member 90 can improve the installation stability of the yoke 51, ensuring that the yoke 51 and the magnetic circuit structure 57 are suspended in the receiving space; on the other hand, the elastic member 90 can also generate elastic buffering force and directional movement force for the vibration of the yoke 51 and the magnetic circuit structure 57. At the same time, the other end of the elastic member 90 can be connected to the cavity wall of the receiving space by welding to ensure the stability of the connection.

In one embodiment of the present invention, as shown in FIG. 4 , four elastic members 90 are provided, and the four elastic members 90 are arranged at intervals along the periphery of the yoke 51 .

In this embodiment, four elastic members 90 are provided to maintain the elastic buffering force of the yoke 51 and the magnetic circuit structure 57 in the peripheral direction thereof, and to provide a circumferential supporting force for the yoke 51 , thereby ensuring the stability of the yoke 51 when suspended.

In one embodiment of the present invention, as shown in FIG. 4 , the sound-generating vibration device 100 further includes a damping member 40 . The damping member 40 is disposed between the yoke 51 and the housing 10 . The damping member 40 is fixedly connected to the yoke 51 .

In this embodiment, the damping member 40 can be foam, and the damping member 40, the magnetic yoke 51 and the shell 10 can be connected by bonding, so that the presence of the damping member 40 can reduce the vibration amplitude of the magnetic yoke 51 and the magnetic circuit structure 57, so as to ensure that the magnetic circuit system 50 will not damage other components in the sound-generating vibration device 100 when vibrating, thereby ensuring the durability of the sound-generating vibration device 100.

In one embodiment of the present invention, as shown in FIG3 , the vibration system 30 further includes a diaphragm 31, the periphery of the diaphragm 31 is connected to the housing 10, one end of the voice coil 33 is connected to the diaphragm 31, one end of the voice coil 33 away from the diaphragm 31 is suspended in the magnetic gap, and a plurality of conductive parts 311 are provided on one side of the diaphragm 31 close to the voice coil 33, and the plurality of conductive parts 311 are arranged at intervals along the periphery of the diaphragm 31, and are all electrically connected to the voice coil 33. A plurality of conductive inserts 20 are mounted on the housing 10, the conductive inserts 20 are arranged corresponding to the conductive parts 311, one end of the conductive insert 20 is electrically connected to a conductive part 311, and the other end of the conductive insert 20 is used to connect to an external circuit.

In this embodiment, the periphery of the diaphragm 31 of the vibration system 30 is connected to the housing 10 to achieve fixed installation of the vibration system 30. One end of the voice coil 33 is connected to the diaphragm 31, and the other end of the voice coil 33 is suspended in the magnetic gap of the magnetic circuit system 50. In this way, after current is passed through the voice coil 33, the voice coil 33 converts electrical energy into mechanical vibration in the magnetic field formed by the inner magnetic circuit structure 53 and the outer magnetic circuit structure 55 of the magnetic circuit system 50, so that the voice coil 33 drives the diaphragm 31 to vibrate and make sound, thereby realizing the conversion of mechanical energy into sound signals. The diaphragm 31 is provided with a plurality of conductive parts 311 on one side close to the voice coil 3333, and the conductive parts 311 can be four, that is, the four conductive parts 311 are respectively provided at the four corners of the periphery of the diaphragm 31, and the leads of the conductive parts 311 and the voice coil 33 can be connected by conductive glue, and then one end of the conductive insert 20 is electrically connected to the conductive part 311, and the other end will extend out of the housing 10 to be electrically connected to the external circuit.

In one embodiment of the present invention, as shown in FIG. 4 , the sound-generating vibration device 100 further includes a centering support plate 92 , one end of which is connected to an end of the voice coil 33 away from the diaphragm 31 , and the other end of the centering support plate 92 is connected to the housing 10 .

In this embodiment, by providing the centering support piece 92, on the one hand, the centering support piece 92 is used to effectively prevent the voice coil 33 from polarizing and swinging, and on the other hand, the centering support piece 92 is used to realize the conduction between the voice coil 33 and the external circuit.

In one embodiment of the present invention, as shown in Figure 4, the sound-generating vibration device 100 also includes a mesh 80, and a pressure relief hole 131 is opened on the side of the shell 10 away from the yoke 51, and the pressure relief hole 131 is connected to the accommodating space. The mesh 80 is arranged on the side of the shell 10 close to the yoke 51 and covers the pressure relief hole 131.

In this embodiment, in order to reduce the vibration resistance of the diaphragm 31 in the vibration system 30 to adjust the acoustic performance, a pressure relief hole 131 is opened at the bottom of the shell to balance the air pressure, and the mesh cloth 80 covers the pressure relief hole 131, which can filter some external impurities. The mesh cloth 80 can be a mesh cloth, which has the characteristics of precise weaving, regular mesh, reliable filtering accuracy and high compressive strength.

In addition, the present invention also provides an electronic device (not shown in the figure), which includes the sound-generating vibration device 100 as described above.

It should be noted that the detailed structure of the sound-generating vibration device 100 can refer to the embodiment of the above-mentioned sound-generating vibration device 100, which will not be repeated here; since the above-mentioned sound-generating vibration device 100 is used in the electronic device of the present invention, the embodiment of the sound-generating vibration device 100 of the present invention includes all technical solutions of all embodiments of the above-mentioned sound-generating vibration device 100, and the technical effects achieved are also exactly the same, which will not be repeated here.

The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly/indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims (7)

1. A sound emitting vibration device, characterized in that the sound emitting vibration device comprises:

The shell is provided with an accommodating space;

the vibration system is arranged in the accommodating space and comprises a voice coil;

The magnetic circuit system is suspended in the accommodating space and comprises an outer magnetic circuit structure and an inner magnetic circuit structure, a magnetic gap is formed between the outer magnetic circuit structure and the inner magnetic circuit structure, the voice coil is suspended in the magnetic gap, and the voice coil vibrates under the driving of the magnetic circuit system;

The coil is fixedly connected with the shell, the coil part is arranged in the magnetic gap, and the coil is used for driving the magnetic circuit system to vibrate, wherein the coil is avoided when the voice coil vibrates;

The magnetic circuit system further comprises a magnetic yoke, the magnetic yoke is suspended in the accommodating space, the outer magnetic circuit structure and the inner magnetic circuit structure are both arranged in the magnetic yoke, the magnetic yoke is provided with an avoidance part, the avoidance part is arranged corresponding to the magnetic gap, and the coil part is arranged in the magnetic gap in a penetrating way through the avoidance part;

the magnetic circuit system is provided with a long axis direction, two magnetic gaps which are arranged in parallel along the long axis direction are formed between the outer magnetic circuit structure and the inner magnetic circuit structure, and the coil is arranged along the long axis direction and corresponds to the magnetic gaps;

The coils are oppositely arranged in the two magnetic gaps in pairs, and at least one coil is arranged in the same magnetic gap.

2. The sound-producing vibration apparatus of claim 1, wherein the coil includes two opposite long sides, one of the long sides being located in the magnetic gap, the other long side being connected to the housing, and an axial direction of the coil is perpendicular to a vibration direction of the magnetic circuit system.

3. The sound-producing vibration device of claim 1, further comprising a circuit board disposed in the receiving space, the circuit board being fixed to the housing and disposed on a side of the yoke facing away from the vibration system;

the circuit board is electrically connected with the coil, and is partially exposed outside the shell to form a conductive interface for being connected with an external circuit.

4. The sound-producing vibration device according to claim 1, further comprising an elastic member, wherein one end of the elastic member is connected to the yoke, and the other end of the elastic member is connected to the housing, so that the yoke is suspended in the accommodating space.

5. The sound emitting vibration device of claim 1, further comprising a damping member disposed between the yoke and the housing, the damping member being fixedly coupled to the yoke.

6. The sound-producing vibration apparatus of claim 1, wherein the vibration system further comprises a diaphragm, the periphery of the diaphragm is connected to the housing, one end of the voice coil is connected to the diaphragm, and one end of the voice coil facing away from the diaphragm is suspended in the magnetic gap;

The vibrating diaphragm is close to one side of voice coil loudspeaker voice coil is equipped with a plurality of conductive parts, and is a plurality of conductive parts are followed the periphery interval of vibrating diaphragm is arranged, and all with voice coil loudspeaker voice coil electric connection, a plurality of conductive inserts install in the casing, conductive inserts with conductive parts corresponds the setting, conductive inserts's one end with conductive parts electric connection, conductive inserts's the other end is used for with external circuit connection.

7. An electronic device comprising the sound-emitting vibration apparatus according to any one of claims 1 to 6.