CN114845217A

CN114845217A - Sound production device and electronic device

Info

Publication number: CN114845217A
Application number: CN202111680747.2A
Authority: CN
Inventors: 陈阿亮; 王俊
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-02

Abstract

The invention discloses a sounding device and an electronic device, wherein the sounding device comprises: the shell comprises a first shell and a second shell, the first shell and the second shell are matched to form an inner cavity, and the second shell is provided with a hollow area; the sounding single body is contained in the inner cavity and matched with the first shell to form a front cavity, the sounding single body blocks the hollowed area, and a leakage hole is formed in the sounding single body; the metal separation net, the sound monomer is located to the metal separation screen panel and covers the hole that leaks, and the metal separation net encloses into the back chamber with first casing and second casing, and it has the sound granule to fill in the back chamber, and the metal separation net is used for keeping apart to inhale the sound granule and gets into the hole that leaks, and wherein, the metal separation net is for surrounding the annular frame column structure in sound monomer periphery, and the one end terminal surface that the metal separation net deviates from the front chamber is less than or the parallel and level deviates from the surface of front chamber in the sound monomer. The sound production device can realize the maximum filling design of the sound production device, and the light and thin design of a mobile phone is realized while the acoustic performance of the sound production device is improved.

Description

Sound production device and electronic device

Technical Field

The invention relates to the technical field of electroacoustic, in particular to a sounding device and an electronic device.

Background

A sound generating device, such as a speaker, is a transducer device for converting an electrical signal into an acoustic signal, and is widely used in electronic devices such as mobile phones, computers, and earphones. With the rapid development of electronic devices such as mobile phones, computers, earphones and the like, consumers have higher requirements on speakers, and require larger back cavities and better acoustic performance. However, contradictory to each other, the mobile phone is required to be as thin as possible, and the expansion and height of the cavity of the sound generating device are limited, even compressed. In order to improve the acoustic performance, the existing method is generally to fill the rear cavity with sound-absorbing particles, and further to provide a partition to separate the sound-absorbing particles from the sound-emitting units. How to further compress the volume occupied by the internal parts to further lighten the sounding device is a technical problem that is continuously studied by those skilled in the art.

Disclosure of Invention

The invention mainly aims to provide a thinner sound production device and an electronic device.

To achieve the above object, the present invention provides a sound device, comprising:

the shell comprises a first shell and a second shell, the first shell and the second shell are matched to form an inner cavity, and the second shell is provided with a hollow area;

the sounding single body is contained in the inner cavity and matched with the first shell to form a front cavity, the hollowed area is blocked by the sounding single body, and a leakage hole is formed in the sounding single body;

the metal separation net cover is arranged on the sounding monomer and covers the leakage hole, the metal separation net and the first shell and the second shell are enclosed to form a rear cavity, sound absorption particles are filled in the rear cavity, the metal separation net is used for isolating the sound absorption particles to enter the leakage hole, the metal separation net is of an annular frame structure surrounding the periphery of the sounding monomer, and one end face of the metal separation net deviates from the front cavity and is lower than or parallel and level with the sounding monomer deviates from the surface of the front cavity.

Preferably, the sounding monomer deviates from one side of antechamber is provided with the yoke, the yoke with form between the free basin frame of sounding the hole of leaking, metal isolation net covers the hole of leaking, the metal isolation net deviate from the one end terminal surface of antechamber is less than or the parallel and level in the yoke deviates from the surface of antechamber.

Preferably, the first casing inboard is formed with the court annular barricade that the direction of second casing extends, metal separation net is close to the one end of antechamber with annular barricade butt, metal separation net deviates from the one end subsides of antechamber are located the yoke outer wall, so that metal separation net with the cooperation of annular barricade is formed and is acceptd the free chamber of acceping of sound production.

Preferably, the sounding unit comprises a single shell, a vibration system and a magnetic circuit system, wherein the magnetic circuit system comprises the magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure, and the central magnetic circuit structure and the side magnetic circuit structure are arranged on the magnetic yoke; the single shell surrounds the periphery of the side magnetic circuit structure and forms the leakage hole with the magnetic yoke, one side of the single shell, facing the magnetic yoke, is provided with a centering support sheet connected with the voice coil, the metal isolation net covers the leakage hole, one end, close to the front cavity, of the metal isolation net is abutted to the centering support sheet and/or the single shell, and one end, away from the front cavity, of the metal isolation net is attached to the outer wall of the magnetic yoke.

Preferably, the magnetic yoke is arranged in the hollow-out area, and the outer edge of the magnetic yoke is matched with the inner wall of the hollow-out area to clamp the metal isolation net.

Preferably, the edge of one side of the magnetic yoke, which is away from the front cavity, is recessed towards one side of the front cavity to form a step surface, the end surface of one end, which is away from the front cavity, of the metal isolation net is flush with the step surface, and the step surface is coated with sealing paint.

Preferably, the edge of one side of the magnetic yoke, which is away from the front cavity, is recessed towards one side of the front cavity to form a step surface, one end of the metal separation net, which is away from the front cavity, is formed into a bending arm, the bending arm is lapped on the step surface, and the surface of the bending arm, which is away from the front cavity, is lower than the surface of the magnetic yoke, which is away from the front cavity.

Preferably, the metal separation net is bent at a position corresponding to the edge of the inner wall of the hollowed-out area to form an avoidance groove for avoiding the edge.

Preferably, the metal isolation net is a metal woven net.

Preferably, the metal woven mesh comprises a plurality of first metal wires and a plurality of second metal wires which are interlaced to form the airing hole, the first metal wires and the second metal wires are interlaced at an edge portion of the metal woven mesh to form an overlapping area, and the overlapping area is pressed into the rolled portion by a pressure in a direction from the first surface to the second surface.

Preferably, the first metal wires and the second metal wires are interwoven at the edge part of the metal woven mesh to form an overlapping area, the overlapping area comprises crossing points of the first metal wires and the second metal wires and extending parts of the first metal wires and the second metal wires, which extend to outer edges of the metal woven mesh close to and/or far away from the crossing points, and the rolling part comprises a first rolling plane formed on the first metal wires and a second rolling plane formed on the second metal wires.

Preferably, the first and second calendering planes lie in the same plane.

Preferably, the included angle formed by the first metal wire and the second metal wire and the outer edge of the metal woven mesh is larger than 0 degree and smaller than 90 degrees.

Preferably, the included angle formed by the first metal wire and the second metal wire and the outer edge of the metal woven mesh is 45 degrees.

Preferably, the metal separation net is a metal etching net.

Preferably, the sounding unit is conducted with an external device through a circuit board, and the metal isolation net is provided with a notch through which the circuit board passes.

Preferably, the first shell is provided with a filling hole which is communicated with the rear cavity and used for filling the sound-absorbing particles into the rear cavity, and a sealing piece for sealing the filling hole is covered at the filling hole;

and/or the presence of a gas in the gas,

the first shell is provided with a damping hole communicated with the rear cavity, and a damping sheet is covered at the damping hole.

The invention also provides an electronic device which comprises a protective shell and the sounding device accommodated in the protective shell.

According to the technical scheme, the breathable isolating piece can be used for isolating sound-absorbing particles in the rear cavity from entering the leakage hole, and normal work of the sounding monomer is guaranteed. The second shell is provided with a hollowed-out area, and the sound production monomer blocks the hollowed-out area, so that the sound production monomer is exposed, the space of the hollowed-out area of the second shell can be utilized for assembling the sound production monomer, and the height of the sound production device is reduced. Furthermore, in the sound production device, the metal isolation net surrounds the periphery of the sound production unit, and the end face of one end of the metal isolation net, which deviates from the front cavity, is lower than or flush with the surface of the sound production unit, which deviates from the front cavity, namely the rear end face of the metal isolation net is lower than or flush with the rear surface of the sound production unit, so that the overall height of the sound production device cannot be increased due to the arrangement of the metal isolation net, the equivalent volume of the rear cavity is improved under the condition that the volume of the inner cavity and the minimum height space are not enlarged, the maximum filling design of the sound production device is realized, and the light and thin design of the sound production device is realized while the acoustic performance of the sound production device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded view of a sound device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of the sounding unit, the metal isolation net and the magnetic isolation layer in the sounding device according to the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a sounding unit, a metal spacer mesh and a magnetic spacer layer in the sounding device according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a sound device according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a metal isolation mesh in a sound device according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a metal isolation mesh in a sound device according to another embodiment of the present invention;

FIG. 7 is a partially enlarged schematic view of a ventilation spacer of the sound generating device according to an embodiment of the present invention;

fig. 8 is a partially enlarged schematic view of a ventilation spacer of a sound generating device according to another embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sounding device.

As shown in fig. 1 to 4, in an embodiment, the sound generating device 100 includes a housing 10, a sound generating unit 20 and a metal separation net 30, wherein the housing 10 includes a first shell 11 and a second shell 12, the first shell 11 and the second shell 12 cooperate to form an inner cavity 13, and the second shell 12 has a hollow area 121; the sounding single body 20 is accommodated in the inner cavity 13 and is matched with the first shell 11 to form a front cavity 14, the sounding single body 20 blocks the hollow area 121, and a leakage hole 26 is formed in the sounding single body 20; the metal isolation net 30 is accommodated in the inner cavity 13, the metal isolation net 30 covers the sounding unit 20 and covers the leakage hole 26, and the first shell 11 and the second shell 12 of the metal isolation net 30 enclose a rear cavity 15; the rear cavity 15 is filled with sound-absorbing particles, the air-permeable isolating piece 30 is used for isolating the sound-absorbing particles to enter the leakage hole 21, wherein the metal isolating net 30 is of an annular frame-shaped structure surrounding the periphery of the sound-generating single body 20, and the end face of one end, away from the front cavity 14, of the metal isolating net 30 is lower than or flush with the surface, away from the front cavity 14, of the sound-generating single body 20.

The sound generating unit 20 of the present invention can be applied to an electronic device, such as a computer, a mobile phone, a sound box, and a car-mounted sound box applied to an automobile, and the sound generating device 100 applied to a mobile phone is taken as a speaker in this embodiment, and the sound generating unit 20 is taken as a speaker unit for example. The sounding unit 20 of the sounding device 100 is accommodated in the inner cavity 13, and the sounding unit 20 and the first shell 11 cooperate to form the front cavity 14, so that the high frequency of the sounding device 100 is adjusted. Further, the metal separation net 30 is also accommodated in the inner cavity 13, the metal separation net 30 is in an annular frame-shaped structure, the metal separation net 30 surrounds the periphery of the sounding unit 20, and forms a rear cavity 15 with the first shell 11 and the second shell 12 in an enclosing manner, so that the low-frequency adjustment effect of the sounding device 100 is realized, and the acoustic performance of the sounding device 100 is improved. The sounding unit 20 is provided with a sound cavity and a leakage hole 26 for communicating the sound cavity with the external environment, and the pressure in the sound cavity can be balanced by the leakage hole 26.

In the sound production device 100, sound absorption particles are filled in the rear cavity 15, the arrangement of the sound absorption particles can enlarge the acoustic volume of the rear cavity 15, and the low-frequency performance of the sound production device 100 is improved. The air-permeable partition 30 can be used to isolate sound-absorbing particles in the rear cavity 15 from entering the leakage holes 26, so as to ensure the normal operation of the sound-generating unit 20. The second shell 12 has a hollow area 121, and the sound generating unit 20 blocks the hollow area 121, so that the sound generating unit 20 is exposed, and the space of the hollow area 121 of the second shell 12 can be utilized for assembling the sound generating unit 20, thereby further reducing the height of the sound generating device 100. Further, in the sound generating device 100, the metal isolation net 30 surrounds the periphery of the sound generating unit 20, and the outside space of the sound generating unit 20 is completely used for filling sound absorbing particles, so that the filling space of the sound absorbing particles is maximized, and the acoustic performance of the sound generating device 100 is improved.

In addition, as shown in fig. 2 to 4, an end surface of the metal separation net 30 away from the front cavity 14 is lower than or flush with a surface of the sounding unit 20 away from the front cavity 14, that is, a rear end surface of the metal separation net 30 is lower than or flush with a rear surface of the sounding unit 20, so that the overall height of the sounding device 100 is not increased by the arrangement of the metal separation net 30, and therefore, the equivalent volume of the rear cavity 15 is increased without enlarging the volume of the inner cavity 13 and the minimum height space, thereby realizing the maximum filling design of the sounding device 100, and realizing the light and thin design of the mobile phone while improving the acoustic performance of the sounding device 100.

In an embodiment, a magnetic yoke 21 is disposed on one side of the sound generating unit 20 away from the front cavity 14, a leakage hole 26 is formed between the magnetic yoke 21 and the basin frame of the sound generating unit 20, the metal isolation net 30 covers the leakage hole 26, and the metal isolation net 30 forms an air hole 31, so that the leakage hole 26 is covered while the sound generating unit 20 does not generate sound normally, and sound absorbing particles are prevented from entering the leakage hole 26. The end surface of the metal separation net 30 facing away from the front cavity 14 is lower than or flush with the surface of the yoke 21 facing away from the front cavity 14. As shown in fig. 2 to 4, a magnetic yoke 21 is disposed at the rear side of the sounding unit 20, and the magnetic yoke 21 can modify the magnetic lines of force of the sounding unit 20 to optimize the acoustic performance of the product. The rear end surface of the metal separation net 30 is lower than or flush with the rear surface of the magnetic yoke 21, so that the overall height of the sound generating device 100 is saved.

In an embodiment, an annular retaining wall 111 extending toward the second housing 12 is formed inside the first housing 11, one end of the metal separation net 30 close to the front cavity 14 abuts against the annular retaining wall 111, and one end of the metal separation net 30 away from the front cavity 14 abuts against an outer wall of the magnetic yoke 21, so that the metal separation net 30 and the annular retaining wall 111 cooperate to form a receiving cavity 112 for receiving the sound generating unit 20.

As shown in fig. 1 and 4, an annular retaining wall 111 is formed inside the first housing 11, the annular retaining wall 111 extends from the inside of the first housing 11 toward the second housing 12, that is, the annular retaining wall 111 extends from front to back and abuts against the metal separation net 30, the front end of the metal separation net 30 abuts against the annular retaining wall 111, and the rear end of the metal separation net 30 abuts against the outer wall of the magnetic yoke 21, so as to achieve the assembly among the metal separation net 30, the magnetic yoke 21 and the annular retaining wall 111. The metal isolation net 30 and the annular retaining wall 111 cooperate to form an accommodating cavity 112, and the sounding unit 20 is accommodated in the accommodating cavity 112, so that the structure is compact, and the sounding device 100 is light and thin.

In another embodiment, as shown in fig. 3, the sound generating unit 20 includes a single housing 22, a vibration system 23 and a magnetic circuit system 24, the vibration system 23 includes a diaphragm 231 and a voice coil 232 for driving the diaphragm 231 to vibrate, the magnetic circuit system 24 includes a yoke 21, a central magnetic circuit structure 241 and a side magnetic circuit structure 242 disposed on the yoke 21; the single shell 22 surrounds the periphery of the side magnetic circuit structure 242 and forms a leakage hole 26 with the magnetic yoke 21, one side of the single shell 22 facing the magnetic yoke 21 is provided with a centering branch piece 25 connected with the voice coil 232, the metal isolation net 30 covers the leakage hole 26, one end of the metal isolation net 30 close to the front cavity 14 is abutted with the centering branch piece 25 and/or the single shell 22, and one end of the metal isolation net 30 departing from the front cavity 14 is abutted with the outer wall of the magnetic yoke 21. It will be appreciated that the monocoque shell 22 may be an annular plastic shell integral with the frame or may be injection molded of plastic and metal.

The voice coil 232 can drive the diaphragm 231 to vibrate up and down under the action of the magnetic circuit system 24, so as to drive the air to sound, and complete the energy conversion between the electricity and the sound. The centering disk 25 is arranged on the rear side of the monomer housing 22, and the centering disk 25 is connected with the voice coil 232 and the monomer housing 22, so that the positioning effect on the vibration system 23 can be achieved, the vibration system 23 is ensured to reciprocate along the axial direction, and the polarization of the vibration system 23 is prevented. The front end of the metal separation net 30 is abutted with the centering branch piece 25, or the metal separation net 30 is abutted with the monomer shell 22, or the metal separation net 30 is abutted with the centering branch piece 25 and the monomer shell 22 at the same time, so that the structure is flexible, convenient and easy to assemble. The rear end of the metal separation net 30 is attached to the outer wall of the magnetic yoke 21, and the front end of the metal separation net 30 is directly abutted to the centering disk 25 and/or the single body shell 22 of the sound generating single body 20, so that compared with the case that the front end of the metal separation net 30 is abutted to the annular retaining wall 111, the volume of the rear cavity 15 can be further enlarged, and the maximum design of the filling volume is realized.

In one embodiment, the yoke 21 is disposed in the hollow area 121, and the outer edge of the yoke 21 cooperates with the inner wall of the hollow area 121 to clamp the metal separation net 30. As shown in fig. 1 to 4, a hollow-out area 121 is formed at a position where the second housing 12 faces the yoke 21, the yoke 21 is disposed in the hollow-out area 121, a gap is formed between an outer edge of the yoke 21 and an inner wall of the hollow-out area 121, a rear end of the metal separation net 30 is inserted into the gap, the outer edge of the yoke 21 and the inner wall of the hollow-out area 121 cooperate to clamp the metal separation net 30, and stable assembly of the yoke 21, the second housing 12, and the metal separation net 30 is achieved. And, the setting of fretwork district 121 provides installation space for yoke 21, reduces yoke 21 and to the occupation space of inner chamber 13, does benefit to the frivolous design that realizes the cell-phone. The hollow area 121 is sealed by the magnetic yoke 21, so that the sealing of the rear cavity 15 is ensured, and the influence on the acoustic performance of the sound production device 100 is avoided.

In an embodiment, an edge of a side of the yoke 21 facing away from the front cavity 14 is recessed toward a side of the front cavity 14 to form a step surface 211, and an end surface of the metal separation net 30 facing away from the front cavity 14 is flush with the step surface 211. As shown in fig. 3 and 4, an edge of a side of the yoke 21 facing away from the front cavity 14, that is, a rear side edge of the yoke 21 is recessed toward the front side to form a step surface 211, and the step surface 211 is coated with a sealing coating material to seal the yoke 21, the first housing 11, and the metal separation net 30. Moreover, the rear end face of the metal separation net 30 is flush with the step face 211, so that the overall height of the sound production device 100 is saved.

In another embodiment, the edge of the side of the magnetic yoke 21 facing away from the front cavity 14 is recessed towards the side of the front cavity 14 to form a step surface 211, one end of the metal separation net 30 facing away from the front cavity 14 forms a bent arm 31, the bent arm 31 is overlapped on the step surface 211, and the surface of the bent arm 31 facing away from the front cavity 14 is flush with the surface of the magnetic yoke 21 facing away from the front cavity 14. An edge of a side of the yoke 21 facing away from the front chamber 14, that is, a rear side edge of the yoke 21 is recessed toward the front side to form a step surface 211. As shown in fig. 5 and 6, the bent arm 31 is formed at the rear end of the metal separation net 30, and the bent arm 31 is overlapped on the step surface 211, thereby stably assembling the yoke 21, the metal separation net 30, and the first housing 11. Also, the surface of the yoke 21 facing away from the front cavity 14, i.e. the back surface of the yoke 21 is lower than the back surface of the yoke 21, saving the overall height of the sound generating device 100. In order to improve the assembling firmness and sealing performance of the yoke 21, the metal separation net 30 and the first housing 11, a sealing paint may be further applied to the step surface 211.

As shown in fig. 3 and 4, the metal separation net 30 is bent at a position corresponding to the inner wall edge of the hollow-out area 121 to form an avoiding groove 32 for avoiding the edge. The avoidance groove 32 can avoid the inner wall edge of the hollowed-out area 121, so that the metal separation net 30 is prevented from interfering with the first shell 11, and the structural design is reasonable and ingenious.

As shown in fig. 6, in one embodiment, the metal separation net 30 has a plurality of ventilation holes 33 arranged at intervals. The vent hole 33 is arranged to realize the air flow communication between the rear cavity 15 and the inner space of the sound generating unit 20. The plurality of vent holes 33 may be uniformly spaced on the metal separation net 30, so as to improve the acoustic performance of the sound production device 100.

As shown in fig. 1, 5 and 6, in an embodiment, the sounding unit 20 is electrically connected to an external device through a circuit board 40, and the metal separation net 30 is provided with a notch 34 for the circuit board 40 to pass through. The circuit board 40 is an FPC (flexible printed circuit), the metal separation net 30 is provided with a notch 34, a pad of the sounding unit 20 is arranged corresponding to the notch 34, and the circuit board 40 is conducted with the pad and penetrates through the notch 34 to be conducted with an external device, so that the normal operation of the sounding device 100 is realized.

In an embodiment, the first shell 11 defines a filling hole communicating with the rear cavity 15 and used for filling the rear cavity 15 with sound-absorbing particles, and the filling hole is covered with a sealing sheet 50 for sealing the filling hole. As shown in fig. 1, a filling hole is formed in the front side of the first casing 11, and the filling hole can be used to fill the rear cavity 15 with sound-absorbing particles, which can reduce low frequency distortion and improve the acoustic performance of the sound generating device 100. Moreover, the plugging sheet 50 is arranged at the filling hole, and the filling hole is plugged by the plugging sheet 50, so that the sound absorption particles are prevented from leaking, and meanwhile, the airtightness of the rear cavity 15 can be ensured.

In one embodiment, the first housing 11 defines a damping hole communicating with the rear cavity 15, and the damping hole is covered with a damping sheet 60. The rear cavity 15 is designed in a closed manner and is communicated with the outside only through the damping holes, so that the air pressure in the rear cavity 15 is the same as that in the front cavity 14, the acoustic performance of the sound production device 100 is improved, and the damping fins 60 cover the damping holes to play a role in damping and reduce the noise.

In one embodiment, the first housing 11 and the second housing 12 are made of plastic material. Specifically, the first housing 11 and the second housing 12 may be made of PC (polycarbonate), which is convenient for molding and manufacturing.

The metal isolation net 30 is a metal woven net or a metal etched net, which is convenient for material selection and manufacture, and can realize the conduction between the rear cavity 15 and the loudspeaker monomer while playing a role of magnetic isolation. Moreover, the metal separation net 30 is a stainless steel product, and has an anti-corrosion effect. Specifically, the metal separation net 30 may be made of 304 stainless steel, 316L stainless steel, duplex stainless steel, or the like in the prior art.

In a preferred embodiment, the breathable separator 30 is a metal woven mesh 80, as shown in fig. 7 and 8, the metal woven mesh 80 includes a plurality of first metal wires 81 and a plurality of second metal wires 82 which are woven in an interlaced manner, that is, the metal woven mesh 80 is formed by weaving a plurality of first metal wires 81 and a plurality of second metal wires 82 in an interlaced manner, and the plurality of first metal wires 81 and the plurality of second metal wires 82 are woven in an interlaced manner to form the ventilation holes 33. It will be appreciated that the metal mesh grid 80 has a first surface and a second surface that are oppositely disposed, i.e., the first surface or the second surface of the metal mesh grid 80 is correspondingly covered on the leakage holes 26. The first wire 81 and the second wire 82 are interlaced at the edge portion of the woven wire 80 to form an overlapped area 83, and the overlapped area 83 is pressed by the pressure in the direction from the first surface to the second surface to the rolled portion 833.

By providing the metal woven mesh 80 as a plurality of first wires 81 and a plurality of second wires 82 which are interlaced, so that the plurality of first wires 81 and the plurality of second wires 82 are interlaced to form the vent holes 33, the ventilation function between the inner space of the sound generating unit 20 and the rear chamber 15 is achieved by the vent holes 33. The first metal wire 81 and the second metal wire 82 are interwoven at the edge part of the metal woven mesh 80 to form an overlapping area 83, so that the overlapping area 83 is pressed into a rolled part 833 under the pressure in the direction from the first surface to the second surface, and the first metal wire 81 and the second metal wire 82 at the edge part of the metal woven mesh 80 are effectively prevented from scattering or dispersing by the rolled part 833, so that the problem that the first metal wire 81 or the second metal wire 82 drops when the metal woven mesh 80 is cut is effectively avoided, and the yield of products can be effectively improved.

As shown in fig. 8, in one embodiment, the woven metal mesh 80 has an outer edge 837, the outer edge 837 defining an outer edge of the woven metal mesh 80 after being cut. The overlapped area 83 of the edge portion of the woven wire mesh 80 includes the crossing points 831 of the first wires 81 and the second wires 82 and the extension portions of the first wires 81 and the second wires 82 extending to the crossing points 831 near and/or far from the outer rim 837, and the rolled portion 833 is formed at the overlapped area 83. In the rolling process of the metal mesh grid 80, the intersection 831 area is stressed to roll, so that the joint force of the first metal wire 81 and the second metal wire 82 after rolling is stronger, and the technical problem that the metal wires fall off when the metal mesh grid 80 is cut is effectively solved.

As will be understood, after the first wire 81 and the second wire 82 in the overlapped area 83 are pressed in the direction from the first surface to the second surface, the portion of the first wire 81 located at the edge portion of the woven metal mesh 80 is pressed into a first rolled plane 834, and the portion of the second wire 82 located at the edge portion of the woven metal mesh 80 is pressed into a second rolled plane 835, so that the first rolled plane 834 and the second rolled plane 835 together constitute a rolled portion 833.

In this embodiment, the first rolling plane 834 and the second rolling plane 835 of the rolling section 833 are flat or sheet-like or plate-like, and the first wire 81 and the second wire 82 of the woven metal net 80 far from the rolling section 833 are in a cylindrical wire-like structure. It can be understood that the first rolling plane 834 and the second rolling plane 835 on the outer edge 837 of the metal mesh grid 80 cooperate with each other, so as to effectively prevent the first metal wires 81 and the second metal wires 82 in the cylindrical wire-like structure from scattering or scattering, so as to avoid the problem of wire dropping of the metal mesh grid 80.

In one embodiment, as shown in fig. 8, the first and second calendering planes 834, 835 are in the same plane. It will be appreciated that the first wire 81 and the second wire 82 of the overlap region 83 are simultaneously subjected to pressure in the direction from the first surface to the second surface such that the first and second calendering planes 834, 835 are formed extending in the same plane, i.e. the first and second calendering planes 834, 835 are in the same plane.

In one embodiment, the first and second rolling planes 834, 835 corresponding to adjacent rolling sections 833 meet to form a rolling combination surface 836, and the plurality of rolling combination surfaces 836 are disposed coplanar to form the rolling sections 833.

As shown in fig. 7, in an embodiment, after the first metal wire 81 and the second metal wire 82 in the overlapped area 83 are simultaneously pressed from the first surface to the second surface, the first metal wire 81 and the second metal wire 82 are extended and abutted by the first rolling plane 834 and the second rolling plane 835 in the process of forming the first rolling plane 834 and the second rolling plane 835, and are further rolled to form the combined rolling combined surface 836. The rolling combination surfaces 836 are arranged in a coplanar manner to form a rolled portion 833.

It can be understood that by rolling the first rolling plane 834 and the second rolling plane 835 to form the combined rolling combination surface 836, the rolled portion 833 located at the overlapping region 83 of the edge portion of the woven metal mesh 80 forms a continuous structure, which further prevents the first metal wire 81 and the second metal wire 82 from being scattered or scattered, so as to avoid the problem of wire dropping of the woven metal mesh 80.

Furthermore, the included angle formed by the first metal wire 81 and the second metal wire 82 of the metal mesh grid 80 and the outer edge 837 of the metal mesh grid 80 is greater than 0 ° and smaller than 90 °, that is, the first metal wire 81 and the second metal wire 82 are not parallel to or perpendicular to the outer edge 837 of the metal mesh grid 80, and the first metal wire 81 and the second metal wire 82 are arranged at an included angle with the outer edge 837 of the metal mesh grid 80. The outer edge 837 of the metal mesh grid 80 is the cut outer edge of the metal mesh grid 80. Optionally, the first and

second wires

81, 82 form an angle of 45 ° with the outer edge 837 of the woven wire mesh 80. Of course, the included angle formed by the first metal wire 81 and the second metal wire 82 and the outer edge 837 of the metal mesh grid 80 may also be 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °, 85 °, and the like, which is not limited herein.

In one embodiment, the first wire 81 and the second wire 82 of the metal mesh grid 80 form an included angle greater than 0 ° and smaller than 90 ° with the outer edge 837 of the metal mesh grid 80, and the braided force between the first wire 81 and the second wire 82 can be increased by using the included angle formed by the first wire 81 and the second wire 82 and the outer edge 837 of the metal mesh grid 80, so that the first wire 81 or the second wire 82 at the outer edge 837 can be prevented from falling off. Moreover, the arrangement makes it easier for the first rolling plane 834 and the second rolling plane 835 pressed by the first metal wire 81 and the second metal wire 82 in the overlapping region 83 from the first surface to the second surface to extend towards the two ends, so that the first rolling plane 834 and the second rolling plane 835 extend from each other, thereby effectively avoiding the wire dropping problem of the metal woven mesh 80 during cutting, and the metal woven mesh 80 is applied to the sound generating device 100, which can greatly improve the yield of the sound generating device 100.

In this embodiment, the first 81 and second 82 wires are optionally angled more than 25 ° and less than 60 ° from the outer edge 837 of the wire mesh 80. Optionally, the included angle formed by the first metal wire 81 and the second metal wire 82 and the outer edge 837 of the metal woven mesh 80 is 45 °, at this time, the weaving force of the metal woven mesh 80 is stronger, the structural stability is higher, and the technical problem that the metal woven mesh 80 deforms or wires fall when being cut can be effectively solved.

The invention also provides an electronic device, which comprises a protective shell and the sound production device 100 accommodated in the protective shell. The electronic device can be a computer, a mobile phone, a sound box, a vehicle-mounted sound box applied to an automobile and the like. The specific structure of the sound generating device 100 in the electronic device refers to the above embodiments, and since the electronic device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A sound device, comprising:

2. The sounding device according to claim 1, wherein a magnetic yoke is disposed on a side of the sounding unit facing away from the front cavity, the leakage hole is formed between the magnetic yoke and the basin frame of the sounding unit, the metal isolation net covers the leakage hole, and an end surface of the metal isolation net facing away from the front cavity is lower than or flush with a surface of the magnetic yoke facing away from the front cavity.

3. The sound-producing device as claimed in claim 2, wherein an annular retaining wall extending in the direction of the second housing is formed inside the first housing, one end of the metal isolating net close to the front cavity abuts against the annular retaining wall, and one end of the metal isolating net away from the front cavity is attached to the outer wall of the magnetic yoke, so that the metal isolating net and the annular retaining wall cooperate to form a containing cavity for containing the sound-producing unit.

4. The sound production device of claim 1, wherein the sound production unit comprises a single housing, a vibration system, and a magnetic circuit system, the magnetic circuit system comprising the yoke, a central magnetic circuit structure and a side magnetic circuit structure provided on the yoke; the single shell surrounds the periphery of the side magnetic circuit structure and forms the leakage hole with the magnetic yoke, one side of the single shell, facing the magnetic yoke, is provided with a centering support sheet connected with the voice coil, the metal isolation net covers the leakage hole, one end, close to the front cavity, of the metal isolation net is abutted to the centering support sheet and/or the single shell, and one end, away from the front cavity, of the metal isolation net is attached to the outer wall of the magnetic yoke.

5. The sound-producing device of claim 2, wherein the magnetic yoke is disposed in the hollow area, and an outer edge of the magnetic yoke cooperates with an inner wall of the hollow area to clamp the metal spacer.

6. The sound production device of claim 5, wherein the edge of the side of the magnetic yoke facing away from the front cavity is recessed towards the side of the front cavity to form a step surface, the end surface of the metal separation net facing away from the front cavity is flush with the step surface, and the step surface is coated with sealing paint.

7. The sounder device according to claim 5, wherein an edge of a side of the yoke facing away from the front cavity is recessed toward a side of the front cavity to form a step surface, an end of the metal spacer mesh facing away from the front cavity forms a bent arm, the bent arm overlaps the step surface, and a surface of the bent arm facing away from the front cavity is lower than a surface of the yoke facing away from the front cavity.

8. The sound production device of claim 5, wherein the metal separation net is bent at a position corresponding to an edge of the inner wall of the hollow area to form an avoiding groove for avoiding the edge.

9. The sounder device according to any one of claims 1-8, wherein the metal spacer mesh is a woven metal mesh.

10. The sounder device according to claim 9, wherein the woven metal mesh comprises a plurality of first wires and a plurality of second wires interwoven to form vents, the woven metal mesh having opposing first and second surfaces, the first and second wires interwoven at edge portions of the woven metal mesh to form overlapping regions, the overlapping regions pressed into a nip by pressure in a direction from the first surface to the second surface.

11. The sounder device according to claim 10, wherein the overlap region comprises intersections of the first and second wires and extensions of the first and second wires to outer edges of the intersections proximate to and/or distal from the woven metal mesh, the coined portions comprising a first coined plane formed on the first wire and a second coined plane formed on the second wire.

12. The sound production device of claim 11, wherein the first and second rolled planes lie in the same plane.

13. The sounder device according to claim 10, wherein the first and second wires form an angle with the outer edge of the woven wire mesh that is greater than 0 ° and less than 90 °.

14. The sounder device according to claim 13, wherein the first and second wires form an angle of 45 ° with the outer edges of the woven wire mesh.

15. The sound production device of any one of claims 1-8, wherein the metal spacer mesh is a metal etched mesh.

16. The sound-producing device according to any one of claims 1-8, wherein the sound-producing unit is electrically connected to an external device through a circuit board, and the metal separation net is provided with a notch for the circuit board to pass through.

17. The sound production device according to any one of claims 1-8, wherein the first housing defines a filling hole communicating with the rear cavity and used for filling the rear cavity with the sound-absorbing particles, and a sealing sheet for sealing the filling hole is covered at the filling hole;

and/or the presence of a gas in the gas,

18. An electronic device, comprising a protective case and the sound-producing device as claimed in any one of claims 1-17 housed within the protective case.