CN114666714B

CN114666714B - Sound producing device and electronic equipment

Info

Publication number: CN114666714B
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: 2023-08-29
Anticipated expiration: 2042-04-02
Also published as: CN114666714A

Abstract

The application discloses a sound generating device and electronic equipment, the sound generating device comprises a shell, a vibration system, a magnetic circuit and a cover plate, wherein the shell comprises a vertical wall and a flat wall which are arranged in an included angle, the flat wall is connected with one end of the vertical wall and extends towards the inside of a containing cavity, the flat wall encloses to form a containing port communicated with the containing cavity, the shell is provided with a groove at one side of the flat wall, which is opposite to the vertical wall, the vibration system is connected with the vertical wall, the magnetic circuit is arranged at the containing port and is connected with the flat wall, the vibration system, the shell and the magnetic circuit enclose to form a vibration space, the cover plate covers the notch of the groove, the cover plate encloses to form an annular cavity with the flat wall, the cover plate is convexly provided with a retaining wall which extends towards the inside of the groove, the annular cavity is divided into a bass cavity and a leakage cavity, and the bass cavity and the leakage cavity are communicated with the vibration space. The application aims to provide the sound generating device capable of effectively improving the sound quality, which not only improves the low-frequency hearing, but also effectively reduces the sharp peaks and valleys of the intermediate frequency.

Description

Sound producing device and electronic equipment

Technical Field

The present application relates to electroacoustic conversion technology, and in particular, to a sound generating device and an electronic device using the sound generating device.

Background

With the development of science and technology, the requirements of people on the pursuit of earphone tone quality, wearing comfort and the miniaturization of earphone size are also increasing. The structure of earphone divide into earphone preceding shell, speaker and earphone backshell, and the speaker is assembled in earphone preceding shell, and wired earphone can have wire rod and plug, and wireless earphone has structures such as bluetooth chip, PCB board, battery.

For this reason, various designs have been made for the semi-in-ear headphones, which are used by more and more people due to their comfort in wearing, so that the wearing comfort is improved, but the low-frequency acoustic energy is reduced, resulting in that the headphones cannot achieve good sound quality.

Disclosure of Invention

The application mainly aims to provide a sound generating device and electronic equipment, and aims to provide the sound generating device capable of effectively improving sound quality, and the sound generating device not only improves low-frequency hearing, but also effectively reduces sharp peaks and valleys of intermediate frequency.

To achieve the above object, the present application provides a sound emitting device including:

the shell is provided with a containing cavity, 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 the containing cavity, the flat wall is enclosed to form a containing port communicated with the containing cavity, and a groove is formed in one side of the flat wall, which is opposite to the vertical 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 are enclosed to form a vibration space; and

The cover plate is covered on the notch of the groove, the cover plate and the straight wall enclose to form an annular cavity, the cover plate is convexly provided with a retaining wall extending in the groove, the retaining wall separates the annular cavity into a bass cavity and a venting cavity, and the bass cavity and the venting cavity are communicated with the vibration space.

In an 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 a connecting line of the two retaining walls.

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 chamber and extends toward the inside of the bass chamber to adjust the volume of the bass chamber.

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

and/or the cover plate is also provided with a gas leakage hole positioned at one side of one retaining wall, and the gas leakage hole is communicated with the gas leakage cavity;

and/or the cover plate is also provided with a bass tube hole positioned at the other side of one retaining wall, and the bass tube hole penetrates through the cover plate and is communicated with the bass cavity.

In an embodiment, the flat wall is provided with a sound inlet corresponding to the retaining wall, and the sound inlet extends towards two opposite sides of the retaining wall, so that the bass chamber and the venting chamber are communicated with the vibration space through the sound inlet;

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

In an embodiment, the circumferential dimension of the annular cavity does not exceed the circumferential dimension of the sound generating means.

In an embodiment, the magnetic circuit system includes a magnetic conduction basin frame, a first magnet and a magnetic conduction plate, wherein the magnetic conduction basin frame is arranged at the accommodating opening, a fixing groove is arranged on the magnetic conduction basin frame, the first magnet is arranged in the fixing groove, the magnetic conduction plate is arranged at 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 so as to form a magnetic gap in a surrounding manner;

the vibration system comprises a vibrating diaphragm and a voice coil, wherein the periphery of the vibrating diaphragm is connected with one end, far away from the straight wall, of the vertical wall, one end of the voice coil is connected with the vibrating diaphragm, the other end of the voice coil is suspended in the magnetic gap, and the vibrating diaphragm, the shell and the magnetic conduction basin frame enclose to form a vibration space.

In an embodiment, the magnetic circuit system further includes a second magnet, and the second magnet is disposed on a side of the magnetic conductive plate opposite to the magnet;

and/or, the straight wall is provided with at least one limiting table towards the inside of the accommodating opening, the groove wall of the fixed groove is provided with a limiting notch corresponding to the limiting table, and when the magnetic conduction basin is erected at the accommodating opening, the limiting table is limited in the limiting notch.

In an embodiment, the vibration system further includes a centering support, the centering support 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 part is provided with an outer welding pad, the vertical wall is provided with a connecting welding spot, and the outer welding pad is connected and conducted with the connecting welding spot;

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

and/or the outer fixing part is in annular arrangement, the inner fixing part is in annular arrangement, and the inner fixing part is positioned at the inner side of the outer fixing part;

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

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

and/or one end of the vertical wall far away from the vertical wall is also provided with a positioning protrusion, and the positioning protrusion is limited between the outer fixing part and the inner fixing part.

The application also provides electronic equipment, which comprises an equipment shell and the sounding device, wherein the sounding device is arranged on the equipment shell.

According to the sound production device, the vertical wall and the flat wall are arranged in an included angle mode, so that the vertical wall and the flat wall are enclosed to form the containing cavity, the flat wall extends towards the inside of the containing cavity and is enclosed to form the containing port communicated with the containing cavity, the vertical wall is conveniently used for installing, fixing and supporting the vibration system, the magnetic circuit system is installed and fixed through the containing port of the flat wall, the vibration system, the shell and the magnetic circuit system are enclosed to form the vibration space, and therefore the magnetic circuit system can be used for driving the vibration system to realize vibration sound production; through being equipped with the recess in the one side of straight wall dorsad vertical wall for the apron lid is located the notch of recess for apron and straight wall enclose and form the annular chamber, utilize the annular chamber to promote sound generating mechanism's low frequency to listen to and feel, and through protruding the barricade that is equipped with in the orientation recess that extends on the apron, utilize the barricade to separate the annular chamber into spaced bass chamber and bleeder cavity, and bass chamber and bleeder cavity all communicate with vibration space, and can realize the length adjustment in bass chamber through the position of design barricade, utilize the bass chamber effectively to promote sound generating mechanism's low frequency and listen to feel in, effectively reduced sound generating mechanism at the sharp-pointed of intermediate frequency peak valley, realize good tone quality.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a sound generating apparatus according to an embodiment of the present application;

FIG. 2 is an exploded view of a sound generating apparatus according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present application;

FIG. 4 is a schematic view of a housing according to an embodiment of the application;

FIG. 5 is a schematic view of a housing according to another embodiment of the present application;

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

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

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

For this reason, various designs have been made for the semi-in-ear headphones, which are used by more and more people due to the comfort of wearing them, and the improvement in wearing comfort brings about a reduction in low-frequency acoustic energy, resulting in that the headphones cannot achieve good sound quality.

In order to enhance the low frequency hearing, a bass tube design is performed for the semi-in-ear earphone to extend the effective frequency range of the low frequency. At present, for ultra-thin design, the design of the bass tube is carried out on the cavity structure around the loudspeaker, but the division of the bass tube and the rear cavity tube is not carried out, so that the peak valley of the intermediate frequency is sharp, and the good tone quality cannot be realized.

Based on the above concepts and problems, the present application proposes a sound generating apparatus 100. The sound generating apparatus 100 is applied to an electronic device, which may be a mobile phone, a sound, a computer, an earphone, a watch, a headset, a television, or the like, and is not limited herein.

Referring to fig. 1 to 6, in the embodiment of the application, the sound generating device 100 includes a housing 1, a vibration system 2, a magnetic circuit 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 disposed 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 is provided with 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 3 is disposed at the receiving opening 131 and is connected with the flat wall 13, the vibration system 2, the housing 1 and the magnetic circuit 3 enclose a vibration space 4, the cover plate 5 covers a notch of the groove 132, the cover plate 5 encloses an annular cavity 6 with the flat wall 13, the cover plate 5 is convexly provided with a retaining wall 51 extending toward the groove 132, the retaining wall 51 separates the annular cavity 6 into a spaced bass cavity 61 and a venting cavity 62, and the bass cavity 61 and the venting cavity 62 are both communicating with the vibration space 4.

In this embodiment, the housing 1 is used for installing, 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 an installation base for the components such as the vibration system 2, the magnetic circuit system 3, and the cover plate 5. It will be appreciated that the housing 1 may be a mounting shell, mounting frame or mounting cylinder structure having the cavity 11, etc., and is not limited herein. Alternatively, the housing 1 may be a square housing or a circular housing, which is not limited herein.

It will be appreciated that the sound generating device 100 is provided with the magnetic circuit system 3 and the vibration system 2 as a single body through the housing 1. The casing 1 is provided with a containing cavity 11 with two open ends, the magnetic circuit system 3 and the vibration system 2 are respectively arranged at the openings at the two ends of the containing cavity 11, so that the vibration system 2, the casing 1 and the magnetic circuit system 3 are enclosed to form a vibration space 4, and the magnetic field formed by the magnetic circuit system 3 is utilized to provide driving force for the vibration system 2, so that the vibration system 2 is driven to vibrate to realize sounding.

In this embodiment, the groove 132 is formed on the side of the flat wall 13 facing away from the vertical wall 12, and the cover plate 5 is used to cover the notch of the groove 132, so that the cover plate 5 and the flat wall 13 enclose to form the annular cavity 6, that is, the annular cavity 6 is a bass channel, so that the annular cavity 6 is communicated with the vibration space 4, and thus the sound generating device 100 is installed in a product, and the sound generating effect of the product can be further improved by using the bass channel. And, annular chamber 6 encircles magnetic circuit 3 circumference setting, does not additionally increase thickness space, does not additionally increase the size of sound generating mechanism 100, finally reduces the space of the electronic equipment that sound generating mechanism 100 occupy, is favorable to the miniaturized design of electronic equipment.

It can be appreciated that by arranging the retaining wall 51 extending towards the inside of the groove 132 on the cover plate 5, the annular cavity 6 is separated into the bass cavity 61 and the venting cavity 62 at intervals by the retaining wall 51, and the bass cavity 61 and the venting cavity 62 are both communicated with the vibration space 4, so that when the vibration system 2 vibrates, the venting cavity 62 can be utilized to balance the air pressure of the vibration space 4, and the bass cavity 61 is utilized to effectively improve the low-frequency hearing of the sounding device 100, and meanwhile, the sharpness of the sounding device 100 in the medium-frequency peak valley is effectively reduced, so that good tone quality is realized, as shown in fig. 7. Further, the adjustment of the pipe length of the bass chamber 61 can be achieved 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 production device 100, the vertical wall 12 and the flat wall 13 are arranged in an included angle mode, 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 opening 131 communicated with the accommodating cavity 11, the vertical wall 12 is conveniently used for installing and supporting the vibration system 2, the accommodating opening 131 of the flat wall 13 is used for installing and fixing the magnetic circuit system 3, 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 sound production; through being equipped with recess 132 in the one side of straight wall 13 dorsad vertical wall 12, utilize apron 5 lid to locate the notch of recess 132, make apron 5 enclose with straight wall 13 and close and form annular chamber 6, utilize annular chamber 6 to promote the low frequency of sound generating mechanism 100 and listen to and feel, and through being equipped with the barricade 51 that extends towards recess 132 on apron 5 epirelief, utilize barricade 51 to separate annular chamber 6 into spaced bass chamber 61 and bleeder chamber 62, and bass chamber 61 and bleeder chamber 62 all communicate with vibration space 4, so can utilize the atmospheric pressure in the balanced vibration space 4 of bleeder chamber 62, utilize bass chamber 61 effectively to promote the sharp-pointed of sound generating mechanism 100 in the intermediate frequency peak valley of hearing when, realize good tone quality. As can be seen from fig. 7, the sound generating apparatus 100 of the present application has a smoother sound pressure curve at an intermediate frequency of 150Hz to 5 KHz.

In the present embodiment, the retaining wall 51 may be a ring-shaped land structure extending along the extending direction of the annular chamber 6, or may be a convex structure disposed at intervals, and the annular chamber 6 may be divided into two space structures facing each other, which is not limited herein.

In one embodiment, the cover 5 is provided with two retaining walls 51, the two retaining walls 51 are spaced apart and abut against the bottom wall of the groove 132, and the bass chamber 61 and the bleeder chamber 62 are located at two sides of the connecting line of the two retaining walls 51.

In the present embodiment, as shown in fig. 2 and 6, by providing two retaining walls 51 at intervals on the side of the cover plate 5 facing the flat wall 13, the annular chamber 6 is divided into a bass chamber 61 and a bleeder chamber 62 at intervals by the two retaining walls 51, so that the bass chamber 61 and the bleeder chamber 62 are located on both sides of the connection line of the two retaining walls 51, that is, one side of the annular chamber 6 located on the connection line of the two retaining walls 51 is the bass chamber 61, and the other side of the annular chamber 6 located on the connection line of the two retaining walls 51 is the bleeder chamber 62. It will be appreciated that the retaining wall 51 abuts the bottom and side walls of the recess 132.

It can be appreciated that the distance between the two retaining walls 51 can be adjusted to realize volume adjustment of the bass chamber 61 and the air release chamber 62, that is, the length of the bass chamber 61 and the size of the air release chamber 62 can be adjusted, thereby effectively improving the sound quality of the sound device 100.

In order to further provide the sound quality effect of the sound generating device 100, in an embodiment, a side of the cover plate 5 facing the recess 132 is further provided with an adjusting protrusion 52, and the adjusting protrusion 52 is disposed corresponding to the bass chamber 61 and extends towards the inside of the bass chamber 61, and the volume and the equivalent diameter of the bass chamber 61 are adjusted by changing the size of the adjusting protrusion 52. It will be appreciated that the thickness of the adjustment protrusion 52 determines the equivalent diameter of the bass chamber 61, further adjusts the additional acoustic mass (Mms) of the acoustic device 100, optimizes the mid-frequency performance of the acoustic device 100, and improves the overall sound quality of the acoustic device 100. The change in length dimension of the adjustment projection 52 further affects the volume of the venting chamber 62, adjusts the low frequency performance of the sound emitting device 100, and improves the low frequency sound quality. In the present application, the acoustic device 100 can achieve an 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 projection 52 may be semicircular, oval, triangular, trapezoidal, or other shapes, without limitation.

Alternatively, the regulating 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 between the venting chamber 62 and the outside, in one embodiment, as shown in fig. 1, 2 and 6, the cover plate 5 is further provided with a venting hole 53 between the two retaining walls 51, and the venting hole 53 communicates with the venting chamber 62. It will be appreciated that the vent 53 may be located anywhere between the two retaining walls 51.

In order to prevent external dust or foreign matter from entering the sound generating device 100 through the air release hole 53 and affecting the performance thereof, the air release hole 53 is attached with a structure such as a breathable film, which is not limited herein.

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

In this 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 through the cover plate 5 and is communicated with the bass chamber 61, and the sound emitted by the vibration system 2 is transmitted from the vibration space 4 by using the bass chamber 61 and the bass tube hole 54, so as to further improve the sound quality of the sound generating device 100.

It will be appreciated that the bleed holes 53 and bass tube holes 54 are disposed on opposite sides of a retaining wall 51 and are designed adjacent to a retaining wall 51. As an embodiment, the air leakage hole 53 and the bass tube hole 54 may be combined into one pipe, and then combined with an electronic device, so that from the appearance of the sound generating device 100, only one sound hole of the sound generating device 100 is exposed, and the sound generating device is tidy and attractive.

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 bleeder chamber 62 each communicate with the vibration space 4 through the sound inlet holes 133.

In the present embodiment, as shown in fig. 2 to 5, the vibration space 4 is communicated with the annular chamber 6 by the sound inlet hole 133 provided on the flat wall 13, that is, the sound inlet hole 133 is provided through the flat wall 13 and communicates with the recess 132. It will be appreciated that the sound inlet hole 133 may be an arc hole, a bar hole or a kidney 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 bleeder chamber 62 are respectively communicated with the vibration space 4 through two ends of the sound inlet hole 133.

It will be appreciated that a portion of the retaining wall 51 is inserted into the sound inlet 133 to divide the sound inlet 133 into two sections. Of course, in other embodiments, a stopper may be disposed in the sound inlet 133, and the sound inlet 133 is separated into two sections by the stopper, and the retaining wall 51 abuts against the stopper.

In one embodiment, the flat wall 13 is provided with the sound inlet holes 133 corresponding to the bass chamber 61 and the vent chamber 62, respectively, so that the bass chamber 61 and the vent chamber 62 communicate with the vibration space 4 through the sound inlet holes 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 sound inlet holes 133 include at least two, and the plurality of sound inlet holes 133 each penetrate through the flat wall 13, that is, the bottom wall of the recess 132, at least one sound inlet hole 133 communicates the vibration space 4 with the bass chamber 61, and at least one sound inlet hole 133 communicates the vibration space 4 with the vent chamber 62. It will be appreciated that the plurality of sound inlet holes 133 are located on both sides of the line connecting the two retaining walls 51.

In an embodiment, the peripheral dimension of the annular cavity 6 does not exceed the peripheral dimension of the sound generating device 100, so that the vibration space of the sound generating device 100 is expanded, and meanwhile, the space is not additionally occupied, the utilization rate of the space of the electronic equipment is improved, and the integrated and miniaturized design of the electronic equipment is facilitated.

In an embodiment, the magnetic circuit system 3 includes a magnetic conduction basin frame 31, a first magnet 32 and a magnetic conduction plate 33, the magnetic conduction basin frame 31 is disposed at the accommodating opening 131, the magnetic conduction basin frame 31 is provided with a fixing slot 311, the first magnet 32 is disposed in the fixing slot 311, the magnetic conduction plate 33 is disposed at one side of the first magnet 32 facing the vibration system 2, and the magnetic conduction plate 33 and the first magnet 32 are spaced from the side wall of the fixing slot 311 to form a magnetic gap 34; the vibration system 2 comprises a vibrating diaphragm 21 and a voice coil 22, wherein the periphery of the vibrating diaphragm 21 is connected with one end, far away from the flat wall 13, of the vertical wall 12, one end of the voice coil 22 is connected with the vibrating diaphragm 21, the other end of the voice coil 22 is suspended in a magnetic gap 34, and the vibrating diaphragm 21, the shell 1 and the magnetic conduction basin frame 31 enclose to form a vibration space 4.

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

It can be understood that the periphery of the diaphragm 21 of the vibration system 2 is connected with one end of the vertical wall 12 away from the flat wall 13, so that the diaphragm 21, the vertical wall 12 and the flat wall 13 of the housing 1 and the magnetic conduction basin frame 31 enclose to form a 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, and the voice coil 22 converts an electric signal into mechanical energy in a magnetic field formed by the magnetic circuit system 3, namely, the magnetic gap 34, so that the voice coil 22 drives the diaphragm 21 to vibrate to realize sound production, thereby converting the mechanical energy into an acoustic signal, and thus completing the conversion from the electric signal to the acoustic signal.

In this embodiment, the diaphragm 21 includes a dome, a ring portion surrounding the dome, and a fixing portion outside the ring portion, and the fixing portion of the diaphragm 21 is connected to the vertical wall 12. It will be appreciated that the fixing portion of the diaphragm 21 and the vertical wall 12 may be fixed by glue bonding. Alternatively, the folded ring portion of the diaphragm 21 protrudes upward, and the folded ring portion of the diaphragm 21 has a protruding annular structure.

In this embodiment, in order to further ensure the vibration effect of the diaphragm 21, the magnetically permeable plate 33 is provided with a concave area corresponding to the dome, so that the concave area is utilized to avoid the vibration of the dome of the diaphragm 21.

In an embodiment, as shown in fig. 2 and 3, the magnetic circuit system 3 further includes a second magnet 35, where the second magnet 35 is disposed on a side of the magnetic conductive plate 33 opposite to the magnet. It will be appreciated that by providing the second magnet 35 such that the second magnet 35 and the first magnet 32 cooperate to enhance the magnetic field strength, the driving force for the voice coil 22 is provided. Alternatively, the magnetizing direction of the second magnet 35 is opposite to the magnetizing direction of the first magnet 32.

In an embodiment, at least one limiting platform 134 is protruding towards the accommodating opening 131 from the flat wall 13, a limiting notch 312 is disposed on the wall of the fixing slot 311 corresponding to the limiting platform 134, and the limiting platform 134 is limited in the limiting notch 312 when the magnetic conductive basin is installed at the accommodating opening 131.

In this embodiment, as shown in fig. 2 to 5, the limiting table 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 installation positioning effect and the installation stability of the magnetic circuit system 3 are achieved by using the limiting cooperation of the limiting table 134 and the limiting notch 312.

In order to improve the installation positioning effect and the installation stability of the magnetic circuit system 3, the limiting tables 134 include 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 wall of the fixing groove 311 corresponding to each limiting table 134.

In an embodiment, the vibration system 2 further includes a centering support 23, where the centering support 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 audio 22.

In this embodiment, as shown in fig. 2 and 3, by providing the centering support 23 in the sound generating apparatus 100, the outer fixing portion 231 of the centering support 23 is clamped between the diaphragm 21 and the vertical wall 12 of the housing 1, the inner fixing portion 232 is clamped 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 through the elastic portion 233, so that when the voice coil 22 vibrates, the vibration is transmitted to the diaphragm 21 through the centering support 23, and polarization and left-right swing of the voice coil 22 are effectively avoided by using the centering support 23, thereby improving the sound generating effect of the sound generating apparatus 100.

It will be appreciated that the diaphragm 21 and the housing 1 of the sound generating apparatus 100 are arranged in a circular or annular shape. Optionally, the outer fixing portion 231 is disposed in a ring shape, the inner fixing portion 232 is located at an inner side of 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 meanwhile, when the inner fixing portion 232 vibrates with the voice coil 22, the elastic portion 233 can provide an elastic force, so that vibration of the inner fixing portion 232 is not affected, and polarization or left-right swing of the voice coil 22 can be avoided.

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

In one embodiment, as shown in fig. 2, the outer fixing portion 231 of the centering pad 23 is disposed in a ring shape, the inner fixing portion 232 is disposed in a ring shape, 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 can be appreciated that, in order to further improve the structural strength of the centering pad 23, the outer fixing portion 231, the elastic portion 233 and the inner fixing portion 232 are integrally formed. Alternatively, the elastic portion 233 includes a plurality of elastic portions 233 spaced apart from each other and located between the outer fixing portion 231 and the inner fixing portion 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 to the connection pad 121. It will be appreciated that by providing the connection pads 121 on the vertical wall 12 of the housing 1, the outer pads 234 of the centering lugs 23 are conveniently soldered to the connection pads 121 to allow the terminals on the housing 1 to be connected to an 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 wire-bonded to the voice coil 22. It will be appreciated that the centering pad 23 is provided with a conductive circuit, and two ends of the conductive circuit are respectively connected with the inner bonding pad 235 and the outer bonding pad 234, so that the conductive circuit is connected and conducted with the lead wire of the voice coil 22 through the inner bonding pad 235, thereby facilitating the conduction of the external circuit to the voice coil 22 by using the centering pad 23.

In one embodiment, as shown in fig. 2, the magnetic conductive plate 33 is provided with a avoidance notch 331 corresponding to the elastic portion 233. It can be appreciated that the avoidance notch 331 is formed on the magnetic conductive plate 33 corresponding to the elastic portion 233, and the avoidance notch 331 is communicated with the concave area, so that the avoidance notch 331 is conveniently utilized to avoid the elastic portion 233 of the centering support piece 23, and a vibration space of the elastic portion 233 is ensured.

In one embodiment, as shown in fig. 2 to 4, the end of the vertical wall 12 away from the horizontal wall 13 is further provided with a positioning protrusion 122, and the positioning protrusion 122 is defined between the outer fixing portion 231 and the inner fixing portion 232.

It will be appreciated that positioning protrusions 122 are provided to facilitate positioning and mounting of centering tabs 23 using positioning protrusions 122. Optionally, the positioning projections 122 include a plurality of positioning projections 122 spaced apart along the circumference of the vertical wall 12.

The application also provides electronic equipment, which comprises an equipment shell and the sounding device 100, wherein the sounding device 100 is arranged on the equipment shell. The specific structure of the sound generating device 100 refers to the foregoing embodiments, and because the electronic device adopts all the technical solutions of all the foregoing embodiments, the sound generating device at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

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

The foregoing description is only of the optional embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present application.

Claims

1. A sound emitting device (100), characterized in that the sound emitting 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) encloses a containing 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 flat wall (13) of the shell (1);

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

the magnetic circuit system (3), the magnetic circuit system (3) is arranged at the accommodating opening (131) and is connected with the straight wall (13), and the vibration space (4) is formed by enclosing the vibration system (2), the shell (1) and the magnetic circuit system (3); and

The apron (5), apron (5) lid is located the notch of recess (132), apron (5) with straight wall (13) enclose and form annular chamber (6), apron (5) protruding be equipped with the orientation two barricades (51) that extend in recess (132), two barricade (51) interval set up, and with diapire butt of recess (132), barricade (51) will annular chamber (6) separate into spaced bass chamber (61) and bleeder chamber (62), so that bass chamber (61) with bleeder chamber (62) are located two the both sides of barricade (51) line, bass chamber (61) with bleeder chamber (62) all with vibration space (4) intercommunication.

2. The sound generating apparatus (100) according to claim 1, wherein an adjusting protrusion (52) is further provided on a side of the cover plate (5) facing the recess (132), and the adjusting protrusion (52) is disposed corresponding to the bass chamber (61) and extends toward the inside of the bass chamber (61) to adjust the volume of the bass chamber (61).

3. The sound generating apparatus (100) according to claim 2, wherein the regulating projection (52) is located between the two retaining walls (51) and is provided extending in the extending direction of the bass chamber (61);

and/or, the cover plate (5) is also provided with a gas leakage hole (53) positioned at one side of one retaining wall (51), and the gas leakage hole (53) is communicated with the gas leakage cavity (62);

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

4. The sound generating apparatus (100) according to claim 1, wherein the flat wall (13) is provided with sound inlet holes (133) corresponding to the retaining wall (51), the sound inlet holes (133) extending toward opposite sides of the retaining wall (51) so that the bass chamber (61) and the bleeder chamber (62) are both communicated with the vibration space (4) through the sound inlet holes (133);

or, 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) are communicated with the vibration space (4) through the sound inlet hole (133) respectively.

5. The sound emitting device (100) according to any of claims 1 to 4, wherein the circumferential dimension of the annular cavity (6) does not exceed the circumferential dimension of the sound emitting device (100).

6. The sound generating device (100) according to any one of claims 1 to 4, wherein the magnetic circuit (3) comprises a magnetic conduction basin frame (31), a first magnet (32) and a magnetic conduction plate (33), the magnetic conduction basin frame is arranged at the accommodating opening (131), the magnetic conduction basin frame (31) is provided with a fixing groove (311), the first magnet (32) is arranged in the fixing groove (311), the magnetic conduction plate (33) is arranged at one side of the first magnet (32) facing the vibration system (2), and the magnetic conduction plate (33) and the first magnet (32) are both spaced from the side wall of the fixing groove (311) so as to form a magnetic gap (34) in a surrounding manner;

the vibration system (2) comprises a vibrating diaphragm (21) and a voice coil (22), wherein the periphery of the vibrating diaphragm (21) is connected with one end, away from the Ping Zhibi (13), of the vertical wall (12), one end of the voice coil (22) is connected with the vibrating diaphragm (21), the other end of the voice coil (22) is suspended in the magnetic gap (34), and the vibrating diaphragm (21), the shell (1) and the magnetic conduction basin frame (31) are enclosed to form the vibration space (4).

7. The sound generating apparatus (100) according to claim 6, wherein the magnetic circuit system (3) further comprises a second magnet (35), the second magnet (35) being arranged at a side of the magnetic conductive plate (33) facing away from the magnet;

and/or, straight wall (13) towards accommodation mouth (131) inwards protruding is equipped with at least one spacing platform (134), the cell wall of fixed slot (311) corresponds spacing platform (134) is equipped with spacing breach (312), magnetic conduction basin frame in accommodation mouth (131) department, spacing platform (134) limit is located in spacing breach (312).

8. The sound generating apparatus (100) according to claim 6, wherein the vibration system (2) further comprises a centering support (23), the centering support (23) comprising 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) being sandwiched between the diaphragm (21) and the vertical wall (12), the inner fixing portion (232) being sandwiched between the diaphragm (21) and the voice coil (22).

9. The sound emitting device (100) according to claim 8, wherein the outer fixing portion (231) is provided with an outer bonding pad (234), the vertical wall (12) is provided with a connection bonding pad (121), and the outer bonding pad (234) is connected and conducted with the connection bonding 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 the lead wire of the voice coil (22) in a welding way;

and/or, the outer fixing part (231) is in an annular shape, the inner fixing part (232) is in an annular shape, 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 gap (331) corresponding to the elastic part (233);

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

10. An electronic device, characterized in that the electronic device comprises a device housing and a sound emitting arrangement (100) according to any one of claims 1 to 9, the sound emitting arrangement (100) being provided in the device housing.