CN114666714A

CN114666714A - Sound production device and electronic equipment

Info

Publication number: CN114666714A
Application number: CN202210343851.0A
Authority: CN
Inventors: 宋健; 谢萍; 朱婷; 赵国栋
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-24
Anticipated expiration: 2042-04-02
Also published as: CN114666714B

Abstract

The invention discloses a sound generating device and electronic equipment, wherein the sound generating device comprises a shell, a vibration system, a magnetic circuit system and a cover plate, the shell comprises a vertical wall and a flat wall which are arranged at an included angle, the flat wall is connected to one end of the vertical wall and extends towards the inside of an accommodating cavity, the flat wall encloses and forms an accommodating opening communicated with the accommodating cavity, a groove is formed in one side of the flat wall, which is opposite to the vertical wall, of the shell, the vibration system is connected to the vertical wall, the magnetic circuit system is arranged at the accommodating opening and connected with the flat wall, the vibration system, the shell and the magnetic circuit system enclose and form a vibration space, the cover plate covers a notch of the groove, the cover plate and the flat wall enclose and form an annular cavity, a retaining wall extending towards the groove is convexly arranged on the cover plate, the retaining wall divides the annular cavity into a low-sound cavity and an air leakage cavity, and the low-sound cavity and the air leakage cavity are both communicated with the vibration space. The invention aims to provide the sound production device capable of effectively improving the sound quality, and the sound production device not only improves the low-frequency auditory sensation, but also effectively reduces the sharp peak valley of the intermediate frequency.

Description

Sound production device and electronic equipment

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sound generating device and electronic equipment using the same.

Background

With the development of science and technology, the pursuit of the sound quality of the earphones, the requirement on the wearing comfort level and the requirement on the miniaturization of the earphone sizes are increasingly improved. The structure of earphone is divided into earphone front shell, loudspeaker and earphone rear shell, the loudspeaker is assembled in the earphone front shell, wired earphone can have wire rod and plug, wireless earphone can have bluetooth chip, PCB board, battery isotructure.

Therefore, various designs have been made, and the half-in-ear headphones are used by more and more people because of the design and wearing comfort, and the half-in-ear headphones improve the wearing comfort, but bring about the reduction of low-frequency sound energy, so that the headphones cannot realize good tone quality.

Disclosure of Invention

The invention mainly aims to provide a sound production device and electronic equipment, and aims to provide the sound production device capable of effectively improving the sound quality.

In order to achieve the above object, the present invention provides a sound generating device, including:

the shell is provided with a containing cavity and comprises a vertical wall and a straight wall which are arranged at an included angle, the straight wall is connected to one end of the vertical wall and extends towards the inside of the containing cavity, the straight wall is enclosed to form an accommodating opening communicated with the containing cavity, and a groove is formed in one side, back to the vertical wall, of the straight wall of the shell;

a vibration system connected to the vertical wall;

the magnetic circuit system is arranged at the accommodating opening and is connected with the straight wall, and the vibration system, the shell and the magnetic circuit system enclose to form a vibration space; and

the apron, the apron lid is located the notch of recess, the apron with straight wall encloses to close and forms the annular chamber, the protruding orientation that is equipped with of apron the barricade that extends in the recess, the barricade will the annular chamber is separated for spaced bass chamber and the chamber of leaking, the bass chamber with the chamber of leaking all with the vibration space intercommunication.

In one embodiment, the cover plate is provided with two retaining walls, the two retaining walls are arranged at intervals and are abutted to the bottom wall of the groove, and the bass cavity and the air leakage cavity are located on two sides of the retaining wall connecting line.

In an embodiment, an adjusting protrusion is further disposed on a side of the cover plate facing the groove, and the adjusting protrusion is disposed corresponding to the bass cavity and extends toward the bass cavity to adjust a volume of the bass cavity.

In one embodiment, the adjusting protrusion is located between the two retaining walls and extends along the extending direction of the bass cavity;

and/or the cover plate is also provided with an air leakage hole positioned on one side of one of the retaining walls, and the air leakage hole is communicated with the air leakage cavity;

and/or, the apron still is equipped with and is located one of them bass tube hole of barricade opposite side, bass tube hole runs through the apron, and communicates the bass chamber.

In one embodiment, the straight wall is provided with a sound inlet hole corresponding to the retaining wall, and the sound inlet hole extends towards two opposite sides of the retaining wall, so that the bass cavity and the air release cavity are both communicated with the vibration space through the sound inlet hole;

or the straight wall is respectively provided with a sound inlet hole corresponding to the bass cavity and the air release cavity, so that the bass cavity and the air release cavity are respectively communicated with the vibration space through the sound inlet hole.

In an embodiment, the circumferential dimension of the annular cavity does not exceed the circumferential dimension of the sound emitting device.

In one embodiment, the magnetic circuit system comprises a magnetic conduction basin frame, a first magnet and a magnetic conduction plate, the magnetic conduction basin frame is arranged at the containing opening, the magnetic conduction basin frame is provided with a fixing groove, the first magnet is arranged in the fixing groove, the magnetic conduction plate is arranged on one side of the first magnet facing the vibration system, and the magnetic conduction plate and the first magnet are both spaced from the side wall of the fixing groove to form a magnetic gap;

vibration system includes vibrating diaphragm and voice coil loudspeaker voice coil, the periphery of vibrating diaphragm with vertical wall is kept away from the one end of straight flat wall is connected, the one end of voice coil loudspeaker voice coil with the vibrating diaphragm is connected, the other end of voice coil loudspeaker voice coil hangs to be located in the magnetic gap, the vibrating diaphragm the casing reaches the formation is enclosed to the magnetic conduction basin frame vibration space.

In one embodiment, the magnetic circuit system further comprises a second magnet, and the second magnet is arranged on the side, opposite to the magnet, of the magnetic conduction plate;

and/or, the straight wall is equipped with at least one spacing platform towards the interior arch of holding mouth, the cell wall of fixed slot corresponds spacing platform is equipped with spacing breach, when the magnetic conduction basin erects holding mouth department, spacing platform is spacing in spacing breach.

In an embodiment, the vibration system further includes a centering branch piece, the centering branch piece includes an outer fixing portion, an inner fixing portion, and an elastic portion connected between the outer fixing portion and the inner fixing portion, the outer fixing portion is sandwiched between the diaphragm and the vertical wall, and the inner fixing portion is sandwiched between the diaphragm and the voice coil.

In one embodiment, the outer fixing portion is provided with an outer bonding pad, the vertical wall is provided with a connecting welding point, and the outer bonding pad is connected and conducted with the connecting welding point;

and/or the inner fixing part is provided with an inner bonding pad which is connected with a lead of the voice coil in a welding way;

and/or, the outer fixed part is annularly arranged, the inner fixed part is annularly arranged, and the inner fixed part is positioned at the inner side of the outer fixed part;

and/or the outer fixing part, the elastic part and the inner fixing part are of an integrally formed structure;

and/or the magnetic conduction plate is provided with an avoidance notch corresponding to the elastic part;

and/or, the vertical wall is kept away from one end of the straight wall and is further provided with a positioning bulge, and the positioning bulge is limited between the outer fixing part and the inner fixing part.

The invention also provides electronic equipment which comprises an equipment shell and the sound generating device, wherein the sound generating device is arranged on the equipment shell.

According to the sound production device, the shell is arranged to be the vertical wall and the flat wall which are arranged at the included angle, so that the vertical wall and the flat wall are enclosed to form the containing cavity, the flat wall extends towards the containing cavity and is enclosed to form the containing opening communicated with the containing cavity, the vertical wall is conveniently used for installing, fixing and supporting the vibration system, the containing opening of the flat wall is used for installing and fixing the magnetic circuit system, the vibration system, the shell and the magnetic circuit system are enclosed to form the vibration space, and the magnetic circuit system can be used for driving the vibration system to realize vibration sound production; be equipped with the recess through the one side at straight wall vertical wall dorsad, utilize the apron lid to locate the notch of recess, make apron and straight wall enclose to close and form the annular chamber, utilize the annular chamber to imitate the low frequency listening sense that promotes sound generating mechanism, and through protruding barricade that is equipped with towards extending in the recess on the apron, utilize the barricade to separate the annular chamber for spaced bass chamber and the chamber that loses heart, and the bass chamber all communicates with vibration space with the chamber that loses heart, and can realize the length adjustment in bass chamber through the position of design barricade, when utilizing the bass chamber to effectively promote sound generating mechanism's low frequency listening sense, effectively reduced sound generating mechanism at the acuteness of intermediate frequency peak valley, realize good tone quality.

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 a schematic structural diagram of a sound generating device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the sound generator according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a sound generator according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a housing according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another view of the housing according to an embodiment of the present invention;

FIG. 6 is a schematic view of a cover plate according to an embodiment of the present invention;

fig. 7 is a graph comparing sound pressure curves of a sound generating device according to an embodiment of the present invention and a sound generating device according to the prior art.

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 all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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 such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Therefore, various designs have been made, and the half-in-ear headphones are used by more and more people due to the design and wearing comfort thereof, and the improvement of wearing comfort brings about the reduction of low-frequency sound energy, so that the headphones cannot realize good sound quality.

In order to improve the low-frequency hearing, a bass tube is designed for a half-in-ear headphone to extend the effective frequency range of low frequencies. At present for ultra-thin design, can carry out the design of bass pipe at loudspeaker surrounding cavity structures, but do not carry out the division of bass pipe and back cavity pipe, lead to that the intermediate frequency peak valley is sharp-pointed, can't realize good tone quality.

Based on the above-mentioned conception and problems, the present invention provides a sound generating device 100. The sound generating apparatus 100 is applied to an electronic device, which may be a mobile phone, a sound box, a computer, an earphone, a watch, a head-mounted device, or a television, and is not limited herein.

Referring to fig. 1 to 6, in an embodiment of the present invention, the sound generating apparatus 100 includes a housing 1, a vibration system 2, a magnetic circuit system 3 and a cover plate 5, wherein the housing 1 has a cavity 11, the housing 1 includes a vertical wall 12 and a flat wall 13 arranged at an included angle, the flat wall 13 is connected to one end of the vertical wall 12 and extends toward the cavity 11, the flat wall 13 encloses a receiving opening 131 communicating with the cavity 11, the housing 1 has a groove 132 on a side of the flat wall 13 facing away from the vertical wall 12, the vibration system 2 is connected to the vertical wall 12, the magnetic circuit system 3 is arranged at the receiving opening 131 and connected to the flat wall 13, the vibration system 2, the housing 1 and the magnetic circuit system 3 enclose a vibration space 4, the cover plate 5 covers a notch of the groove 132, the cover plate 5 and the flat wall 13 enclose a ring 6, the cover plate 5 is convexly provided with a retaining wall 51 extending toward the groove 132, the baffle wall 51 divides the annular chamber 6 into a spaced bass chamber 61 and a vent chamber 62, both the bass chamber 61 and the vent chamber 62 communicating with the vibration space 4.

In the present embodiment, the housing 1 is used for mounting, fixing and protecting the components such as the vibration system 2, the magnetic circuit system 3, and the cover plate 5, that is, the housing 1 provides a mounting base for the components such as the vibration system 2, the magnetic circuit system 3, and the cover plate 5. It is understood that the housing 1 may be a mounting case, a mounting frame or a mounting cylinder structure with the receiving cavity 11, and the like, and is not limited herein. Alternatively, the housing 1 may be a square housing or a circular housing, which is not limited herein.

It is understood that the sound generating device 100 integrally mounts the magnetic circuit system 3 and the vibration system 2 through the housing 1. Casing 1 has both ends open-ended and holds chamber 11, and magnetic circuit 3 and vibration system 2 are installed respectively in the opening part that holds the chamber 11 both ends to make vibration system 2, casing 1 and magnetic circuit 3 enclose to close and form vibration space 4, so utilize the magnetic field that magnetic circuit 3 formed to provide drive power for vibration system 2, thereby drive vibration system 2 vibration is in order to realize the sound production.

In this embodiment, through being equipped with recess 132 in one side of straight wall 13 back to vertical wall 12, utilize apron 5 lid to locate the notch of recess 132 for apron 5 encloses with straight wall 13 and closes formation annular chamber 6, also is annular chamber 6 for the bass passageway, makes annular chamber 6 and vibration space 4 intercommunication, so installs sound generating mechanism 100 in the product, and usable bass passageway further improves the sound producing effect of product. Moreover, the annular cavity 6 is circumferentially arranged around the magnetic circuit system 3, so that the thickness space is not additionally increased, the size of the sound generating device 100 is not additionally increased, the space of the electronic equipment occupied by the sound generating device 100 is finally reduced, and the miniaturization design of the electronic equipment is facilitated.

It can be understood that, by providing the retaining wall 51 extending toward the groove 132 on the cover plate 5, the retaining wall 51 is utilized to separate the ring cavity 6 into the spaced bass cavity 61 and the air release cavity 62, and the bass cavity 61 and the air release cavity 62 are both communicated with the vibration space 4, so when the vibration system 2 vibrates, the air pressure of the vibration space 4 can be balanced by the air release cavity 62, and the low-frequency listening feeling of the sound 100 can be effectively improved by utilizing the bass cavity 61, and meanwhile, the sharpness of the sound-generating device 100 at the middle-frequency peak valley can be effectively reduced, and good sound quality can be realized, as shown in fig. 7. Further, the pipe length adjustment of the bass chamber 61 can be realized by adjusting the position of the retaining wall 51, so as to further adjust the function of the bass chamber 61 in the sound generating device 100, and further adjust the low-frequency sound quality of the sound generating device 100.

According to the sound generating device 100, the vertical wall 12 and the flat wall 13 are arranged at an included angle, so that the vertical wall 12 and the flat wall 13 are enclosed to form the accommodating cavity 11, the flat wall 13 extends towards the inside of the accommodating cavity 11 and is enclosed to form the accommodating port 131 communicated with the accommodating cavity 11, the vibration system 2 is conveniently installed and fixed and supported by the vertical wall 12, the magnetic circuit system 3 is installed and fixed by the accommodating port 131 of the flat wall 13, the vibration system 2, the shell 1 and the magnetic circuit system 3 are enclosed to form the vibration space 4, and the magnetic circuit system 3 can be used for driving the vibration system 2 to realize vibration and sound generation; through being equipped with recess 132 in one side of straight wall 13 vertical wall 12 dorsad, utilize apron 5 lid to locate the notch of recess 132, make apron 5 and straight wall 13 enclose to close and form annular chamber 6, utilize annular chamber 6 to imitate the low frequency listening sensation that promotes sound generating mechanism 100, and be equipped with the barricade 51 of extending towards recess 132 in through lapping 5 epirelief, utilize barricade 51 to separate annular chamber 6 for spaced bass chamber 61 and the chamber 62 that leaks, and bass chamber 61 and the chamber 62 that leaks all communicate with vibration space 4, so the atmospheric pressure in the balanced vibration space 4 of usable chamber 62 that leaks, when utilizing the low frequency listening sensation of bass chamber 61 effective promotion sound generating mechanism 100, effectively reduced the acuteness of sound generating mechanism 100 at the intermediate frequency peak valley, realize good tone quality. As shown in fig. 7, the sound pressure curve of the sound generating device 100 of the present invention is more stable in the middle frequency range of 150Hz to 5 KHz.

In this embodiment, the retaining wall 51 may be a ring platform structure extending along the extending direction of the annular cavity 6, or may also be a protrusion structure arranged at an interval to partition the annular cavity 6 into two opposite space structures, and the like, which is not limited herein.

In one embodiment, the cover plate 5 is provided with two walls 51, the two walls 51 are spaced apart and abut against the bottom wall of the recess 132, and the bass chamber 61 and the air release chamber 62 are located on both sides of the line connecting the two walls 51.

In the present embodiment, as shown in fig. 2 and fig. 6, two blocking walls 51 are disposed at an interval on one side of the cover plate 5 facing the flat wall 13, so that the two blocking walls 51 divide the annular cavity 6 into a low tone chamber 61 and a release chamber 62 at an interval, so that the low tone chamber 61 and the release chamber 62 are located on two sides of a line connecting the two blocking walls 51, that is, one side of the annular cavity 6 located on the line connecting the two blocking walls 51 is the low tone chamber 61, and the other side of the annular cavity 6 located on the line connecting the two blocking walls 51 is the release chamber 62. It will be appreciated that the retaining wall 51 abuts the bottom and side walls of the recess 132.

It can be understood that the distance between the two retaining walls 51 can be adjusted to achieve the volume adjustment of the bass chamber 61 and the air release chamber 62, and the length of the bass chamber 61 and the size of the air release chamber 62 can also be adjusted, so as to effectively improve the sound quality effect of the sound generating apparatus 100.

In order to further provide the sound quality effect of the sound generating device 100, in an embodiment, the cover plate 5 is further provided with an adjusting protrusion 52 on a side facing the groove 132, the adjusting protrusion 52 is disposed corresponding to the bass chamber 61 and extends toward the interior of the bass chamber 61, and the volume and equivalent diameter of the bass chamber 61 are adjusted by changing the size of the adjusting protrusion 52. It can be understood that the thickness of the adjusting protrusion 52 determines the equivalent diameter of the bass cavity 61, further adjusts the additional sound mass (Mms) of the sound generating apparatus 100, optimizes the middle frequency performance of the sound generating apparatus 100, and improves the overall sound quality of the sound generating apparatus 100. The change of the length dimension of the adjusting protrusion 52 further affects the volume of the air release chamber 62, so as to adjust the low-frequency performance of the sound generating device 100 and improve the low-frequency sound quality. In the present application, the sound generating device 100 can achieve the optimal acoustic effect by adjusting the size of the protrusion 52.

It will be appreciated that the adjustment projection 52 is spaced from the bottom wall of the recess 132, so that the volume of the bass chamber 61 is adjusted by the adjustment projection 52. Alternatively, the cross-section of the adjustment protrusion 52 may be semicircular, oval, triangular, trapezoidal, or other shapes, which are not limited herein.

Alternatively, the adjustment projection 52 is located between the two retaining walls 51 and is provided extending in the extending direction of the bass chamber 61.

In order to facilitate the communication of the air release chamber 62 with the outside, in one embodiment, as shown in fig. 1, 2 and 6, the cover plate 5 is further provided with an air release hole 53 between the two retaining walls 51, and the air release hole 53 communicates with the air release chamber 62. It will be appreciated that the relief hole 53 can be located anywhere between the two walls 51.

In order to avoid that external dust or impurities enter the interior of the sound generating device 100 through the air release hole 53 to affect the performance of the sound generating device, structures such as a breathable film are attached to the air release hole 53, which is not limited herein.

In an embodiment, the cover plate 5 is further provided with a bass tube hole 54, the bass tube hole 54 is arranged on one side of the retaining wall 51 away from the air release hole 53, the bass tube hole 54 penetrates through the cover plate 5 and is communicated with the bass cavity 61, communication between the bass cavity 61 and an external space is realized, and the medium-low frequency performance of the sound generating device 100 is further adjusted.

In the present embodiment, as shown in fig. 1 to 3 and 6, the bass tube hole 54 is provided so that the bass tube hole 54 penetrates the cover 5 and communicates with the bass chamber 61, so that the sound generated by the vibration of the vibration system 2 is transmitted from the vibration space 4 through the bass chamber 61 and the bass tube hole 54, thereby further improving the sound quality effect of the sound generating apparatus 100.

It will be appreciated that the bleed holes 53 and bass holes 54 are disposed on opposite sides of a wall 51 and are designed adjacent to a wall 51. As an example, the air release hole 53 and the bass tube hole 54 can be combined into a duct, and further combined with an electronic device, and only one sound hole of the sound generating apparatus 100 is exposed from the appearance of the sound generating apparatus 100, which is neat and beautiful.

In one embodiment, the flat wall 13 is provided with sound inlet holes 133 corresponding to the retaining wall 51, and the sound inlet holes 133 extend toward opposite sides of the retaining wall 51, so that the bass chamber 61 and the air release chamber 62 are both communicated with the vibration space 4 through the sound inlet holes 133.

In the present embodiment, as shown in fig. 2 to 5, the sound inlet hole 133 is provided on the flat wall 13, that is, the sound inlet hole 133 is provided through the flat wall 13 and communicates with the groove 132, so that the vibration space 4 communicates with the annular chamber 6 by the sound inlet hole 133. It can be understood that the sound inlet hole 133 may be an arc-shaped hole, a strip-shaped hole or a kidney-shaped hole, that is, one end of the sound inlet hole 133 is located at one side of the retaining wall 51, and the other end of the sound inlet hole 133 is located at the other side of the retaining wall 51, so that the bass chamber 61 and the air release chamber 62 are respectively communicated with the vibration space 4 through both ends of the sound inlet hole 133.

It can be understood that a part of the retaining wall 51 is inserted into the sound inlet hole 133 to divide the sound inlet hole 133 into two sections. Of course, in other embodiments, a stopper may be disposed in the sound inlet hole 133, and the sound inlet hole 133 may be divided into two sections by the stopper, in which case the retaining wall 51 abuts against the stopper.

In one embodiment, the flat wall 13 is provided with a sound inlet hole 133 corresponding to the bass chamber 61 and the air release chamber 62, respectively, so that the bass chamber 61 and the air release chamber 62 communicate with the vibration space 4 through the sound inlet hole 133, respectively.

In the present embodiment, as shown in fig. 2 to 5, the flat wall 13 is provided with a plurality of sound inlet holes 133, the number of sound inlet holes 133 is at least two, and the plurality of sound inlet holes 133 all penetrate the flat wall 13, that is, the bottom wall of the groove 132, at least one sound inlet hole 133 communicates the vibration space 4 and the bass chamber 61, and at least one sound inlet hole 133 communicates the vibration space 4 and the air release chamber 62. It can be understood that the sound inlet holes 133 are respectively located at both sides of the line connecting the two retaining walls 51.

In an embodiment, the peripheral size of the annular cavity 6 does not exceed the peripheral size of the sound generating device 100, so that the vibration space of the sound generating device 100 is expanded, and meanwhile, no extra space is occupied, the utilization rate of the space of the electronic device is improved, and the integration and miniaturization design of the electronic device is facilitated.

In an embodiment, the magnetic circuit system 3 includes a magnetic conducting frame 31, a first magnet 32, and a magnetic conducting plate 33, the magnetic conducting frame 31 is disposed at the receiving opening 131, the magnetic conducting frame 31 is provided with a fixing groove 311, the first magnet 32 is disposed in the fixing groove 311, the magnetic conducting plate 33 is disposed on a side of the first magnet 32 facing the vibration system 2, and both the magnetic conducting plate 33 and the first magnet 32 are spaced from a sidewall of the fixing groove 311 to form a magnetic gap 34; vibration system 2 includes vibrating diaphragm 21 and voice coil 22, and the periphery of vibrating diaphragm 21 is connected with the one end that straight wall 13 was kept away from to vertical wall 12, and the one end and the vibrating diaphragm 21 of voice coil 22 are connected, and the other end of voice coil 22 hangs and locates in magnetic gap 34, and vibrating diaphragm 21, casing 1 and magnetic conduction basin frame 31 enclose to close and form vibration space 4.

In this embodiment, as shown in fig. 2 and fig. 3, the magnetic conduction frame 31 is U-shaped, that is, the magnetic conduction frame 31 has a bottom wall and a side wall surrounding the bottom wall, so that the side wall and the bottom wall enclose to form a fixing groove 311, the first magnet 32 and the magnetic conduction plate 33 are both disposed in the fixing groove 311, and the magnetic conduction plate 33 and the first magnet 32 are both spaced from the side wall of the fixing groove 311 to enclose to form a magnetic gap 34, that is, one end of the voice coil 22 away from the diaphragm 21 is suspended between the magnetic conduction plate 33 and the side wall of the magnetic conduction frame 31 and the first magnet 32.

It can be understood that the periphery of the vibrating diaphragm 21 of the vibration system 2 is connected with one end of the vertical wall 12 far away from the flat wall 13, so that the vibrating diaphragm 21, the vertical wall 12 and the flat wall 13 of the housing 1 and the magnetic conduction frame 31 enclose to form the vibration space 4, the voice coil 22 is located in the vibration space 4, and the magnetic gap 34 of the magnetic circuit system 3 is communicated with the vibration space 4, so that current is introduced into the voice coil 22, the voice coil 22 is in the magnetic field formed by the magnetic circuit system 3, that is, in the magnetic gap 34, converts the electric signal into mechanical energy, so that the voice coil 22 drives the vibrating diaphragm 21 to vibrate to realize sound production, so that the mechanical energy is converted into a sound signal, and thus, the conversion from the electric signal to the sound signal is completed.

In this embodiment, the diaphragm 21 includes a dome, a folded ring portion disposed around the dome, and a fixing portion disposed outside the folded ring portion, and the fixing portion of the diaphragm 21 is connected to the vertical wall 12. It will be appreciated that the fixed part of the diaphragm 21 and the vertical wall 12 may be fixed by gluing. Optionally, the corrugated portion of the diaphragm 21 is convex upward, and the corrugated portion of the diaphragm 21 is a convex annular structure.

In this embodiment, in order to further ensure the vibration effect of the diaphragm 21, the magnetic conduction plate 33 is provided with a concave region corresponding to the top of the ball, so as to avoid the vibration of the top of the ball of the diaphragm 21 by using the concave region.

In one embodiment, as shown in fig. 2 and 3, the magnetic circuit system 3 further includes a second magnet 35, and the second magnet 35 is disposed on a side of the magnetic conductive plate 33 facing away from the magnet. It will be appreciated that the second magnet 35 is arranged such that the second magnet 35 and the first magnet 32 cooperate to enhance the strength of the magnetic field to provide the driving force to the voice coil 22. Optionally, the second magnet 35 is magnetized in a direction opposite to the direction of magnetization of the first magnet 32.

In an embodiment, at least one limiting platform 134 is convexly disposed on the flat wall 13 toward the receiving opening 131, a limiting notch 312 is disposed on a groove wall of the fixing groove 311 corresponding to the limiting platform 134, and when the magnetic conduction basin is erected at the receiving opening 131, the limiting platform 134 is limited in the limiting notch 312.

In the present embodiment, as shown in fig. 2 to fig. 5, the limiting platform 134 is disposed on the straight wall 13, and the limiting notch 312 is disposed on the side wall of the magnetic conduction basin frame 31, so that the limiting cooperation between the limiting platform 134 and the limiting notch 312 is utilized to achieve the installation positioning effect and the installation stability of the magnetic circuit system 3.

In order to improve the installation positioning effect and the installation stability of the magnetic circuit system 3, the limiting table 134 includes a plurality of limiting tables 134, the plurality of limiting tables 134 are arranged along the circumferential direction of the accommodating opening 131 at intervals, and a limiting notch 312 is arranged on the groove wall of the fixing groove 311 corresponding to each limiting table 134.

In an embodiment, the vibration system 2 further includes a damper 23, the damper 23 includes an outer fixing portion 231, an inner fixing portion 232, and an elastic portion 233 connected between the outer fixing portion 231 and the inner fixing portion 232, the outer fixing portion 231 is sandwiched between the diaphragm 21 and the vertical wall 12, and the inner fixing portion 232 is sandwiched between the diaphragm 21 and the voice coil 22.

In the present embodiment, as shown in fig. 2 and fig. 3, by providing the damper 23 in the sound generating device 100, the outer fixing portion 231 of the damper 23 is sandwiched between the diaphragm 21 and the vertical wall 12 of the housing 1, the inner fixing portion 232 is sandwiched between the dome of the diaphragm 21 and the voice coil 22, and the outer fixing portion 231 and the inner fixing portion 232 are connected by the elastic portion 233, so that when the voice coil 22 vibrates, the vibration is transmitted to the diaphragm 21 through the damper 23, thereby effectively avoiding the polarization and the left-right swing of the voice coil 22 by the damper 23, and further improving the sound generating effect of the sound generating device 100.

It is understood that the diaphragm 21 and the casing 1 of the sound generating device 100 are arranged in a circular or ring shape. Optionally, the outer fixing portion 231 is disposed in a ring shape, the inner fixing portion 232 is located inside the outer fixing portion 231, and the inner fixing portion 232 is connected to the outer fixing portion 231 through the elastic portion 233, so that the centering support 23 is fixed between the diaphragm 21 and the housing 1 through the outer fixing portion 231, and when the inner fixing portion 232 vibrates along with the voice coil 22, the elastic portion 233 can provide an elastic force, which does not affect the vibration of the inner fixing portion 232, and can prevent the voice coil 22 from polarizing or swinging left and right.

Optionally, the inner fixing portion 232 is annularly disposed. In the embodiment, the voice coil 22 is disposed in a circular or annular shape, such that the end of the voice coil 22 connected to the diaphragm 21 is completely connected to the diaphragm 21 through the inner fixing portion 232.

In one embodiment, as shown in fig. 2, the outer fixing portion 231 of the centering branch piece 23 is disposed annularly, the inner fixing portion 232 is disposed annularly, and the inner fixing portion 232 is located inside the outer fixing portion 231. Alternatively, the outer fixing portion 231, the elastic portion 233 and the inner fixing portion 232 are located on the same plane.

It is understood that, in order to further improve the structural strength of the spider 23, the outer fixing portion 231, the elastic portion 233 and the inner fixing portion 232 are integrally formed. Alternatively, the elastic part 233 includes a plurality of elastic parts 233, and the plurality of elastic parts 233 are disposed at intervals and between the outer fixing part 231 and the inner fixing part 232.

In one embodiment, as shown in fig. 2, the outer fixing portion 231 is provided with an outer pad 234, the vertical wall 12 is provided with a connection pad 121, and the outer pad 234 is connected and conducted with the connection pad 121. It can be understood that, by providing the connection pads 121 on the vertical wall 12 of the housing 1, the outer pads 234 of the centering fins 23 are conveniently connected to the connection pads 121, so that the terminals on the housing 1 are electrically connected to the external circuit.

In one embodiment, as shown in fig. 2, the inner fixing portion 232 is provided with an inner pad 235, and the inner pad 235 is connected to the lead wire of the voice coil 22 by soldering. It can be understood that a conductive circuit is disposed in the spider 23, and two ends of the conductive circuit are respectively connected to the inner pad 235 and the outer pad 234, so that the conductive circuit is connected and conducted with the lead of the voice coil 22 through the inner pad 235, thereby facilitating the conduction of an external circuit to the voice coil 22 by using the spider 23.

In an embodiment, as shown in fig. 2, the magnetic conduction plate 33 is provided with an escape notch 331 corresponding to the elastic portion 233. It can be understood that, the avoiding notch 331 is provided on the magnetic conductive plate 33 corresponding to the elastic portion 233, and the avoiding notch 331 is communicated with the recessed area, so that the avoiding notch 331 is conveniently used for avoiding the elastic portion 233 of the centering branch piece 23, and the vibration space of the elastic portion 233 is ensured.

In an embodiment, as shown in fig. 2 to 4, a positioning protrusion 122 is further disposed at an end of the vertical wall 12 away from the flat wall 13, and the positioning protrusion 122 is limited between the outer fixing portion 231 and the inner fixing portion 232.

It can be understood that, by providing the positioning protrusion 122, the positioning and installation of the centering branch piece 23 by using the positioning protrusion 122 are facilitated. Alternatively, the positioning projection 122 includes a plurality of positioning projections 122, and the plurality of positioning projections 122 are provided at intervals in the circumferential direction of the vertical wall 12.

The invention further provides an electronic device, which comprises a device shell and the sound generating device 100, wherein the sound generating device 100 is arranged in the device shell. The specific structure of the sound generating device 100 refers to the foregoing embodiments, and since the electronic device adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.

In this embodiment, the electronic device further includes a device housing having a cavity, and the sound generating device 100 is disposed in the cavity. It is understood that the electronic device may be a mobile phone, a sound, a computer, a headset, a watch, a head-mounted device, a television, a tablet computer, or the like, and is not limited herein.

The above description is only an alternative 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 generating device (100), wherein the sound generating device (100) comprises:

the shell (1), the shell (1) is provided with a containing cavity (11), the shell (1) comprises a vertical wall (12) and a flat wall (13) which are arranged at an included angle, the flat wall (13) is connected to one end of the vertical wall (12) and extends towards the inside of the containing cavity (11), the flat wall (13) surrounds to form an accommodating opening (131) communicated with the containing cavity (11), and a groove (132) is formed in one side, opposite to the vertical wall (12), of the shell (1);

a vibration system (2), said vibration system (2) being connected to said vertical wall (12);

the magnetic circuit system (3) is arranged at the accommodating opening (131) and connected with the straight wall (13), and the vibration system (2), the shell (1) and the magnetic circuit system (3) enclose to form a vibration space (4); and

apron (5), apron (5) lid is located the notch of recess (132), apron (5) with straight wall (13) enclose to close and form annular chamber (6), apron (5) protruding orientation that is equipped with barricade (51) of extending in recess (132), barricade (51) will annular chamber (6) are separated for spaced bass chamber (61) and chamber (62) of leaking gas, bass chamber (61) with chamber (62) of leaking gas all with vibration space (4) intercommunication.

2. The sound generating device (100) according to claim 1, wherein said cover plate (5) is provided with two said retaining walls (51), said two retaining walls (51) are spaced apart and abut against the bottom wall of said groove (132), and said bass chamber (61) and said air release chamber (62) are located on both sides of the line connecting said two retaining walls (51).

3. The sound generating device (100) according to claim 2, wherein the cover plate (5) is further provided with an adjusting protrusion (52) on a side facing the groove (132), and the adjusting protrusion (52) is arranged corresponding to the bass chamber (61) and extends towards the inside of the bass chamber (61) to adjust the volume of the bass chamber (61).

4. The sound generating device (100) according to claim 3, wherein said adjusting protrusion (52) is located between two said retaining walls (51) and extends along the extension direction of said bass chamber (61);

and/or the cover plate (5) is also provided with an air leakage hole (53) positioned on one side of one of the retaining walls (51), and the air leakage hole (53) is communicated with the air leakage cavity (62);

and/or, the cover plate (5) is also provided with a bass tube hole (54) positioned on the other side of one of the retaining walls (51), and the bass tube hole (54) penetrates through the cover plate (5) and is communicated with the bass cavity (61).

5. The sound generating device (100) according to claim 1, wherein said flat wall (13) is provided with sound inlet holes (133) corresponding to said retaining wall (51), said sound inlet holes (133) extending towards opposite sides of said retaining wall (51) such that said bass chamber (61) and said air release chamber (62) are both in communication with said vibration space (4) through said sound inlet holes (133);

or the straight wall (13) is respectively provided with a sound inlet hole (133) corresponding to the bass cavity (61) and the air release cavity (62), so that the bass cavity (61) and the air release cavity (62) are respectively communicated with the vibration space (4) through the sound inlet hole (133).

6. The sound generating device (100) according to any of the claims 1 to 5, wherein the circumferential dimension of the annular chamber (6) does not exceed the circumferential dimension of the sound generating device (100).

7. The sound generating device (100) according to any one of claims 1 to 5, wherein the magnetic circuit system (3) comprises a magnetic conducting basin frame (31) disposed at the receiving opening (131), a first magnet (32) and a magnetic conducting plate (33), the magnetic conducting basin frame (31) is provided with a fixing groove (311), the first magnet (32) is disposed in the fixing groove (311), the magnetic conducting plate (33) is disposed on a side of the first magnet (32) facing the vibration system (2), the magnetic conducting plate (33) and the first magnet (32) are both spaced from a side wall of the fixing groove (311) to form a magnetic gap (34);

vibration system (2) include vibrating diaphragm (21) and voice coil loudspeaker voice coil (22), the periphery of vibrating diaphragm (21) with vertical wall (12) are kept away from the one end of straight wall (13) is connected, the one end of voice coil loudspeaker voice coil (22) with vibrating diaphragm (21) are connected, the other end of voice coil loudspeaker voice coil (22) hangs and locates in magnetic gap (34), vibrating diaphragm 21 casing (1) reaches magnetic conduction basin frame (31) enclose and close the formation vibration space (4).

8. The sound generating device (100) according to claim 7, wherein said magnetic circuit system (3) further comprises a second magnet (35), said second magnet (35) being disposed on a side of said magnetic conductive plate (33) facing away from said magnet;

and/or the straight wall (13) is provided with at least one limiting platform (134) towards the containing opening (131) in an inward protruding manner, the groove wall of the fixing groove (311) is provided with a limiting notch (312) corresponding to the limiting platform (134), and when the magnetic conduction basin is erected at the containing opening (131), the limiting platform (134) is limited in the limiting notch (312).

9. The sound generating apparatus (100) of claim 7, wherein the vibration system (2) further comprises a damper (23), the damper (23) comprises an outer fixing portion (231), an inner fixing portion (232), and an elastic portion (233) connected between the outer fixing portion (231) and the inner fixing portion (232), the outer fixing portion (231) is interposed between the diaphragm (21) and the vertical wall (12), and the inner fixing portion (232) is interposed between the diaphragm (21) and the voice coil (22).

10. The sound generating apparatus (100) according to claim 9, wherein the outer fixing portion (231) is provided with an outer pad (234), the vertical wall (12) is provided with a connection pad (121), and the outer pad (234) is connected and conducted with the connection pad (121);

and/or the inner fixing part (232) is provided with an inner bonding pad (235), and the inner bonding pad (235) is connected with a lead of the voice coil (22) in a welding way;

and/or, the outer fixing part (231) is annularly arranged, the inner fixing part (232) is annularly arranged, and the inner fixing part (232) is positioned at the inner side of the outer fixing part (231);

and/or the outer fixing part (231), the elastic part (233) and the inner fixing part (232) are of an integrally formed structure;

and/or the magnetic conduction plate (33) is provided with an avoidance notch (331) corresponding to the elastic part (233);

and/or one end of the vertical wall (12) far away from the straight wall (13) is also provided with a positioning bulge (122), and the positioning bulge (122) is limited between the outer fixing part (231) and the inner fixing part (232).

11. An electronic device, characterized in that the electronic device comprises a device housing (1) and a sound-generating device (100) according to any one of claims 1 to 10, the sound-generating device (100) being provided at the device housing (1).