CN109379681B - Sound production device - Google Patents

Sound production device Download PDF

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Publication number
CN109379681B
CN109379681B CN201811161213.7A CN201811161213A CN109379681B CN 109379681 B CN109379681 B CN 109379681B CN 201811161213 A CN201811161213 A CN 201811161213A CN 109379681 B CN109379681 B CN 109379681B
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China
Prior art keywords
voice coil
dome
magnetic
fixed
walls
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CN201811161213.7A
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CN109379681A (en
Inventor
令狐荣林
刘晓东
肖波
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201811161213.7A priority Critical patent/CN109379681B/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/025Magnetic circuit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00Loudspeakers
    • H04R2400/11Aspects regarding the frame of loudspeaker transducers

Abstract

The invention provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the basin frame; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil inserted in the magnetic gap to drive the vibrating diaphragm to vibrate and sound, and an elastic support assembly fixed on the basin frame and arranged opposite to the vibrating diaphragm, and is characterized in that one side of the vibrating diaphragm, which is close to the voice coil, extends towards the voice coil to form a first wall, and the tail end of the first wall is bent and extends to form a second wall; the second wall is connected with the voice coil through the first wall, the second wall is connected with the elastic support assembly and is spaced from the voice coil, the first wall is connected with the side face of the voice coil, and the first wall and the second wall are used for elastically suspending the voice coil below the diaphragm. Compared with the related art, the sound production device has good acoustic performance and high reliability.

Description

Sound production device
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of acoustoelectrics, in particular to a sounding device applied to a portable electronic product.
[ background of the invention ]
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. A sound generating device for playing sound is widely applied to smart mobile devices such as current mobile phones.
The sound production device in the related art comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the basin frame; vibration system is including being fixed in the vibrating diaphragm of basin frame, being fixed in the vibrating diaphragm inserts and locates the magnetic gap is in order to drive the voice coil loudspeaker voice coil and the one end of vibrating diaphragm vibration sound production are fixed in the basin frame, the other end is fixed in the voice coil loudspeaker voice coil is kept away from the elastic support subassembly of vibrating diaphragm one end.
However, in the sound generating device in the related art, the diaphragm and the elastic support assembly are respectively fixed to two opposite ends of the voice coil, and although the elastic support assembly can effectively prevent the lateral vibration of the voice coil during vibration, the design of the voice coil is limited due to the structure of directly connecting with the voice coil, and the volume of the magnetic circuit system is also limited, so that the acoustic improvement of the sound generating device is limited.
Therefore, there is a need to provide a new sound generation device to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a sound production device with good acoustic performance and high reliability.
In order to achieve the above object, the present invention provides a sound production device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the basin frame; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil inserted in the magnetic gap to drive the vibrating diaphragm to vibrate and sound, and an elastic support component fixed on the basin frame and arranged opposite to the vibrating diaphragm; one side of the diaphragm, which is close to the voice coil, extends towards the voice coil to form a first wall, and the tail end of the first wall bends and extends to form a second wall; the second wall is connected to the voice coil through the first wall, the second wall with the elastic support component is connected and with the voice coil interval, the first wall with the side of voice coil is connected, the first wall with the second wall is used for with the voice coil elasticity hangs in under the diaphragm.
Preferably, the elastic support components together enclose a hollow area, and one end of the voice coil, which is far away from the diaphragm, is located in the range of the hollow area.
Preferably, the first wall and the second wall respectively include two walls and are disposed at two opposite sides of the voice coil at intervals.
Preferably, each of the second walls includes a first section spaced from the voice coil and second sections extending from opposite ends of the first section to the two first walls, respectively, the first section is connected to the elastic support member, and the two second sections of the same second wall are connected to the two first walls, respectively.
Preferably, the voice coil is in a round-cornered rectangular structure, and the four first walls are respectively located at four round-cornered positions of the voice coil.
Preferably, the vibrating diaphragm comprises an upper sound diaphragm fixed at one end of the basin stand and a dome close to one side of the magnetic circuit system; the dome comprises a dome body, two first walls and two second walls which are positioned at two opposite sides of the dome body, and two third walls which extend from two opposite sides of the dome body along the horizontal direction; the two first walls are formed by extending the dome body to the magnetic circuit system, each third wall is located between two second sections of the same second wall on the same side of the third wall, and the dome body and the third walls are fixedly connected to the upper sound film.
Preferably, the dome body is of a rectangular structure, the two first walls and the two second walls are respectively located on two sides of a short shaft of the dome body, and the two third walls are respectively located on two sides of the short shaft of the dome body.
Preferably, the horizontal distance from each third wall to the dome body is smaller than the horizontal distance from the first section on the same side to the dome body.
Preferably, the dome body is of an integrally formed structure with the first wall and the second wall.
Preferably, the dome body and the first and second walls are separate structures.
Preferably, the top dome is made of any one of magnesium aluminum alloy, carbon fiber, stainless steel or aluminum alloy.
Preferably, the elastic support assemblies comprise two elastic support assemblies respectively located at two opposite sides of the voice coil, and each elastic support assembly comprises an elastic part and an auxiliary diaphragm attached to the elastic part; the first section is fixedly connected to one side of the elastic part far away from the auxiliary diaphragm.
Preferably, the elastic element comprises a first fixing arm fixed on the basin frame, two second fixing arms respectively supporting and fixing two second sections of the same second wall, and two elastic arms which are fixedly connected and respectively extend towards the two second fixing arms from the first fixing arm; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section and a first connecting portion and a second connecting portion, wherein the first connecting portion and the second connecting portion extend from two opposite sides of the folding ring respectively, the first connecting portion is fixed on the first fixing arm, and the second connecting portion is fixed on the first section.
Preferably, the two elastic supporting components are respectively connected with the voice coil; the four second fixing arms of the two elastic pieces are respectively fixed on the bottom surface of the voice coil.
Preferably, the two elastic support assemblies are respectively arranged at intervals with the voice coil.
Preferably, the elastic member is a flexible circuit board electrically connected to the voice coil.
Preferably, the magnetic circuit system comprises a magnetic yoke, main magnetic steel fixed on the magnetic yoke, and two first auxiliary magnetic steels respectively arranged at two opposite sides of the main magnetic steel at intervals and forming the magnetic gap with the main magnetic steel; each first auxiliary magnetic steel is positioned between the first section and the voice coil on the same side of the first auxiliary magnetic steel.
Preferably, the voice coil is in a round-cornered rectangular structure; the two elastic support assemblies are positioned on two sides of the short shaft of the voice coil, and the two first auxiliary magnetic steels are positioned on two sides of the short shaft of the voice coil.
Preferably, the magnetic circuit system further comprises two second secondary magnetic steels respectively arranged at two opposite sides of the main magnetic steel at intervals; and the two second secondary magnetic steels are positioned between the two elastic supporting components.
Preferably, the voice coil is in a round-cornered rectangular structure; two the elastic support subassembly is located the both sides of the minor axis of voice coil loudspeaker voice coil, two first pair magnet steel is located the both sides of the minor axis of voice coil loudspeaker voice coil, two the vice magnet steel of second is located the both sides of the major axis of voice coil loudspeaker voice coil.
Preferably, magnetic circuit still including fold and locate the main pole core of main magnet steel, fold respectively and locate two the two first auxiliary pole cores of the vice magnet steel of second and inlay and locate the punch holder of basin frame, the punch holder including be fixed in the basin frame be annular solid fixed ring with by gu fixed ring respectively to two the vice pole cores of the vice magnet steel of second extension, two the vice pole core is folded respectively and is located two the vice magnet steel of second.
Compared with the prior art, in the sound production device, one side of the vibrating diaphragm, which is close to the voice coil, extends towards the voice coil to form a first wall, and the tail end of the first wall is bent and extends to form a second wall; the second wall is connected to the voice coil through the first wall, the second wall is connected with the elastic support assembly and is spaced from the voice coil, the first wall is connected with the side face of the voice coil, and the first wall and the second wall are used for elastically suspending the voice coil below the diaphragm; meanwhile, the first wall is fixedly glued on the side face of the voice coil, the structure releases the structural design of the voice coil, the height of the voice coil is not limited by the elastic supporting component any more, and the whole height of the sounding device can be designed to be lighter and thinner. In addition, through two of ball-top the setting of second wall, the auxiliary diaphragm with voice coil loudspeaker voice coil non-direct connection, promptly the auxiliary diaphragm passes through the second wall with the voice coil loudspeaker voice coil forms indirect connection, makes the auxiliary diaphragm with form certain space of stepping down between the voice coil loudspeaker voice coil, should step down the space and can set up the magnet steel, has eliminated the restriction to magnetic circuit's design, and magnetic circuit need not to step down the elastic support subassembly, and magnetic circuit can realize the many magnet steel three magnetic circuits or five magnetic circuit structure of maximize, has effectively improved the acoustic performance of vocal ware.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a sound device according to the present invention;
FIG. 2 is an exploded perspective view of a sound device according to the present invention;
FIG. 3 is a schematic diagram of a three-dimensional structure of a ball top of the sound generating device according to the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is an exploded perspective view of the resilient support assembly of the sound device of the present invention;
FIG. 6 is a schematic view of a dome of a sound device according to the present invention;
FIG. 7 is a schematic perspective view of a dome, an elastic support assembly and a voice coil of the sound device of the present invention;
FIG. 8 is a sectional view taken along line A-A of FIG. 1;
fig. 9 is an enlarged view of a portion shown by B in fig. 8.
[ detailed description ] embodiments
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.
Referring to fig. 1, the present invention provides a sound generating device 100, which includes a frame 1, a vibration system 2 and a magnetic circuit system 3.
The basin stand 1 is used for fixedly supporting the vibration system 2 and the magnetic circuit system 3.
Referring to fig. 2-4, the vibration system 2 includes a diaphragm 21 fixed to the frame 1, a voice coil 22 for driving the diaphragm 21 to vibrate and generate sound, and an elastic support assembly 23 fixed to the frame 1 and disposed opposite to the diaphragm 21.
The magnetic circuit system 3 has a magnetic gap 30, and the voice coil 22 is inserted in the magnetic gap 30.
In this embodiment, a first wall 42 is formed by extending a side of the diaphragm 21 close to the voice coil 22 toward the voice coil 21, and a second wall 43 is formed by bending and extending a tail end of the first wall 42; the second wall 43 is connected to the voice coil 22 through the first wall 42, the second wall 43 is connected to the elastic support member 23 and spaced apart from the voice coil 22, and the first wall 42 is connected to a side surface of the voice coil 22; further, the first wall 42 and the second wall 43 respectively include two portions and are located at two opposite sides of the voice coil 22, each of the second walls 43 includes a first portion 431 spaced apart from the voice coil 22 and a second portion 432 extending from two opposite ends of the first portion 431 to the two first walls 42, the first portion 431 is connected to the elastic supporting member 23, the two second portions 432 of the same second wall 43 are connected to the two first walls 42, respectively, and the first wall 42 and the second wall 43 are used for elastically suspending the voice coil 22 below the diaphragm 21.
Further, the vibrating diaphragm 21 includes an upper sound diaphragm 211 fixed at one end of the frame 1 and a dome 4 near one side of the magnetic circuit system 3; the dome 4 includes a dome body 41, two of the first walls 42 and two of the second walls 43 on opposite sides of the dome body 41, and two of the third walls 44 extending in a horizontal direction from opposite sides of the dome body 41; the two first walls 42 are formed by extending the dome body 41 toward the magnetic circuit system 3, each third wall 44 is located between two second segments 432 of the same second wall 43 on the same side of the third wall 44, and the dome body 41 and the third walls 44 are fixedly connected to the upper sound diaphragm 211.
Preferably, the dome body 41 is a rectangular structure, the two first walls 42 and the two second walls 43 are respectively located on two sides of a short axis of the dome body 41, and the two third walls 44 are respectively located on two sides of the short axis of the dome body 41; preferably, the extending direction of the dome body 41 is a horizontal direction, the horizontal distance from each third wall 44 to the dome body 41 along the long axis direction of the dome body 41 is d1, the horizontal distance from each first segment 431 to the dome body 41 along the long axis direction of the dome body 41 is d2, and the horizontal distance d1 from each third wall 44 to the dome body 41 is smaller than the horizontal distance d2 from the first segment 431 to the dome body 41 on the same side.
Preferably, the dome body 41, the first wall 42 and the second wall 43 may be formed integrally or may be formed separately; for example, in the present embodiment, the dome body 41, the first wall 42 and the second wall 43 are integrally formed, so that the dome 4 is more reliably formed; preferably, the dome 4 is made of any one material of magnesium-aluminum alloy, carbon fiber, stainless steel or aluminum alloy, but the material of the dome 4 is not limited thereto, and any material that has low density, high hardness and is easy to mold may be used as the material of the dome 4.
As shown in fig. 5-7, in the present embodiment, the elastic supporting components 23 together enclose a hollow area 230, and an end of the voice coil 22 away from the diaphragm 21 is located in the hollow area 230; preferably, the elastic supporting members 23 include two elastic supporting members 23 respectively located at two opposite sides of the voice coil 22, and the two elastic supporting members 23 surround the hollow area 230.
Specifically, each elastic support assembly 23 includes an elastic member 231 and an auxiliary diaphragm 232 attached to the elastic member 231; the first segment 431 is fixedly connected to a side of the elastic member 231 away from the auxiliary diaphragm 232.
The elastic member 231 includes a first fixing arm 2311 fixed to the frame 1, two second fixing arms 2312 respectively supporting and fixing the two second segments 432 of the same second wall 43, and two elastic arms 2313 respectively extending from the first fixing arm 2311 to the two second fixing arms 2312 and forming a fixed connection. The fixed connection between the two second fixing arms 2312 and the first fixing arm 2311 can be a direct connection or an indirect connection, for example, in the present embodiment, each second fixing arm 2312 is spaced from the basin rack 1 and forms a direct connection with the first fixing arm 2311 through the elastic arm 2313 on the same side as the second fixing arm 2312; of course, it is also possible that two of said second fixing arms 2312 are fixed to said tub 1, respectively, each of said second fixing arms 2312 forming an indirect connection with said first fixing arm 2311 via said resilient arm 2313 on the same side as said second fixing arm 2312.
The auxiliary diaphragm 232 includes a corrugated rim 2321 with an arc-shaped cross section, and a first connection portion 2322 and a second connection portion 2323 respectively extending from two opposite sides of the corrugated rim 2321; the first connection portion 2322 is fixed to the first fixing arm 2311, and the second connection portion 2323 is fixed to the first segment 431.
The elastic support assembly 23 serves to improve the reliability of the vibration system 2. In this embodiment, by the arrangement of the two elastic support assemblies 23, a symmetric structure of a dual elastic support assembly is formed, so that the support effect on the voice coil 22 is more stable, the lateral swing of the voice coil 22 is better prevented, the vibration reliability of the vibration system 2 is improved, and the reliability of the sound generating device 100 is further improved.
Preferably, the elastic member 231 is a flexible circuit board, and the voice coil 22 is electrically connected to the elastic member 231, so that on one hand, the elastic member can be used for supporting the voice coil 22, and on the other hand, an external electrical signal is introduced into the voice coil 22, thereby avoiding the problem that the external electrical signal is easily broken when being introduced into the voice coil 22 through a lead wire, and improving the reliability of the voice coil.
In the above structure, the voice coil 22 is fixed to the diaphragm 21 through the first wall 42, and on one hand, the structure effectively suppresses the lateral oscillation of the voice coil 22 through the first wall 42, thereby improving the reliability and stability of the sound generating device 100; meanwhile, the first wall 42 is fixedly glued to the side face of the voice coil 22, the structure releases the structural design of the voice coil 22, the position of the voice coil can float up and down along the vibration direction of the vibrating diaphragm 21, the height of the voice coil is not limited by the elastic supporting component 23 any more, and the overall height of the sound generating device can be designed to be thinner and lighter.
In the present embodiment, a rectangular configuration in which the voice coil 22 is rounded will be described as an example, and the four first walls 42 are located at four rounded positions of the voice coil 22. So that the dome 4 is glued to the voice coil 22 more reliably, and the lateral vibration of the voice coil 22 is suppressed more effectively, thereby further improving the reliability of the vibration system 2.
In addition, in the above structure, through two of the dome 4 the setting of second wall 43, the auxiliary diaphragm 232 with voice coil 22 indirect connection, namely the auxiliary diaphragm 232 passes through the second wall 43 with voice coil 22 forms indirect connection, makes the auxiliary diaphragm 232 with form certain space of stepping down between the voice coil 22, this space of stepping down can set up the magnet steel, thereby released magnetic circuit 3's structural design, elastic support component 23 does not directly glue with voice coil 22 bottom, has effectively avoided magnetic circuit 3 with the interference of elastic support component 23, and magnetic circuit 3 need not to step down elastic sound generator support component 23, and magnetic circuit can realize the maximize structure, has effectively improved the acoustic performance of sound generator 100.
It should be noted that the elastic supporting component 23 and the voice coil 22 are disposed at an interval or connected to each other; in the present embodiment, the two elastic support assemblies 23 are respectively connected to the voice coil 22; the four second fixing arms 2312 of the two elastic members 23 are respectively fixed to the bottom surface of the voice coil 22, and the second fixing arms 2312 provide bottom support for the voice coil 22, so that the vibration reliability of the voice coil 22 is improved, and the reliability of the sound generating device 100 is improved.
Referring to fig. 2 and fig. 7-9, the magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32 fixed to the magnetic yoke 31, and two first sub-magnetic steels 33 respectively disposed at two opposite sides of the main magnetic steel 32 at intervals and forming the magnetic gap 30 with the main magnetic steel 32; each first auxiliary magnetic steel 33 is located on the same side with the first section 431 and between the voice coils 22, namely, each first auxiliary magnetic steel 33 is accommodated in the yielding space formed by the elastic supporting component 23 and the voice coils 22 on the same side. At this time, the magnetic circuit system 3 has three magnetic steels, and in practical application, the magnetic circuit system 3 may be set as a three-magnetic-steel magnetic circuit according to the requirement of an optimized design, or the magnetic circuit system 3 may be further optimized as a five-magnetic-steel magnetic circuit.
When the magnetic circuit system 3 is a three-magnetic-steel magnetic circuit, taking a rectangular structure with the voice coil 22 being a round corner as an example for explanation, the two elastic support assemblies 23 are located on two sides of the short axis of the voice coil 22, the two first auxiliary magnetic steels 33 are located on two sides of the short axis of the voice coil 22, and each first auxiliary magnetic steel 33 is located between the first section 431 and the voice coil 22 on the same side, that is, each first auxiliary magnetic steel 33 is accommodated in a yielding space formed by the elastic support assembly 23 and the voice coil 22 on the same side. At this time, the three-magnetic steel magnetic circuit structure enables the driving performance of the magnetic circuit system 3 to be excellent, so that the acoustic performance of the sound production device 100 is good.
When the magnetic circuit system 3 is a five-magnet steel magnetic circuit, for example, in the present embodiment, in order to further effectively utilize the space and enhance the volume of the magnetic circuit system 3, the magnetic circuit system 3 further includes two second secondary magnet steels 34 respectively disposed at two opposite sides of the main magnet steel 32 at intervals; the two second secondary magnetic steels 34 are located between the two elastic support components 23.
Further, with the voice coil is the rectangle structure at fillet and explains for the example, two elastic support component 23 is located the both sides of the minor axis of voice coil 22, two first pair magnet steel 33 is located the both sides of the minor axis of voice coil 22, and each first pair magnet steel 33 is located rather than the homonymy first section 431 with between the voice coil 22, promptly each first pair magnet steel 33 accept rather than the homonymy elastic support component 23 with in the space of stepping down that voice coil 22 formed, two second pair magnet steel 34 is located the both sides of the major axis of voice coil 22. At this time, the driving performance of the five-magnetic steel magnetic circuit structure is stronger, so that the vibration effect of the sound production device 100 is better.
In order to further improve the performance of the magnetic circuit system 3, the magnetic force lines of the magnetic circuit system 3 are cut by the voice coil 22 as much as possible to form a larger driving force, the magnetic circuit system 3 further includes a main pole core 35 stacked on the main magnetic steel 32, two first auxiliary pole cores 36 stacked on the second auxiliary magnetic steel 34, and an upper clamp plate 37 embedded on the basin frame 1, the upper clamp plate 37 includes a fixing ring 371 fixed on the basin frame 1 and two second auxiliary pole cores 372 extended from the fixing ring 371 to the second auxiliary magnetic steel 34, and the two auxiliary pole cores 372 are stacked on the second auxiliary magnetic steel 372.
Compared with the prior art, in the sound production device, one side of the vibrating diaphragm, which is close to the voice coil, extends towards the voice coil to form a first wall, and the tail end of the first wall is bent and extends to form a second wall; the second wall is connected to the voice coil through the first wall, the second wall is connected with the elastic support assembly and is spaced from the voice coil, the first wall is connected with the side face of the voice coil, and the first wall and the second wall are used for elastically suspending the voice coil below the diaphragm; meanwhile, the first wall is fixedly glued on the side face of the voice coil, the structure releases the structural design of the voice coil, the height of the voice coil is not limited by the elastic supporting component any more, and the whole height of the sounding device can be designed to be lighter and thinner. In addition, through two of ball-top the setting of second wall, the auxiliary diaphragm with voice coil loudspeaker voice coil non-direct connection, promptly the auxiliary diaphragm passes through the second wall with the voice coil loudspeaker voice coil forms indirect connection, makes the auxiliary diaphragm with form certain space of stepping down between the voice coil loudspeaker voice coil, should step down the space and can set up the magnet steel, has eliminated the restriction to magnetic circuit's design, and magnetic circuit need not to step down the elastic support subassembly, and magnetic circuit can realize the many magnet steel three magnetic circuits or five magnetic circuit structure of maximize, has effectively improved the acoustic performance of vocal ware.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (21)

1. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively fixed on the basin frame; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil inserted in the magnetic gap to drive the vibrating diaphragm to vibrate and sound, and an elastic support assembly fixed on the basin frame and arranged opposite to the vibrating diaphragm, and is characterized in that one side of the vibrating diaphragm, which is close to the voice coil, extends towards the voice coil to form a first wall, and the tail end of the first wall is bent and extends to form a second wall; the second wall is connected to the voice coil through the first wall, the second wall is connected with the elastic support assembly and is spaced from the voice coil, the first wall is connected with the side face of the voice coil, and the first wall and the second wall are used for elastically suspending the voice coil below the diaphragm; the magnetic circuit system comprises a magnetic yoke, main magnetic steel fixed on the magnetic yoke and two first auxiliary magnetic steels which are respectively arranged on two opposite sides of the main magnetic steel at intervals and form the magnetic gap with the main magnetic steel; the elastic support assembly and the voice coil form yielding spaces at intervals, and each first auxiliary magnetic steel is contained in the yielding spaces at the same side of the first auxiliary magnetic steel.
2. The sounding device according to claim 1, wherein the resilient support members together define a hollow region, and an end of the voice coil remote from the diaphragm is located within the hollow region.
3. The sounder device according to claim 2, wherein the first wall and the second wall each comprise two and are spaced apart on opposite sides of the voice coil.
4. A sound device according to claim 3, wherein each of the second walls includes a first section spaced from the voice coil and second sections extending from opposite ends of the first section towards the two first walls respectively, the first section being connected to the resilient support member and the two second sections of the same second wall being connected to the two first walls respectively.
5. The sounder device according to claim 4, wherein the voice coil is of a rounded rectangular configuration, and four of the first walls are located at four rounded corners of the voice coil.
6. The sounding device according to claim 4, wherein the diaphragm comprises an upper diaphragm fixed at one end of the frame and a dome near one side of the magnetic circuit system; the dome comprises a dome body, two first walls and two second walls which are positioned at two opposite sides of the dome body, and two third walls which extend from two opposite sides of the dome body along the horizontal direction; the two first walls are formed by extending the dome body to the magnetic circuit system, each third wall is located between two second sections of the same second wall on the same side of the third wall, and the dome body and the third walls are fixedly connected to the upper sound film.
7. The sound production device as claimed in claim 6, wherein the dome body is a rectangular structure, two of the first walls and two of the second walls are located on either side of the minor axis of the dome body, and two of the third walls are located on either side of the minor axis of the dome body.
8. The sound production device of claim 7, wherein the horizontal distance of each third wall to the dome body is less than the horizontal distance of the first section on the same side thereof to the dome body.
9. The sounder device according to claim 6, wherein the dome body is a unitary structure with the first wall and the second wall.
10. The sounder device according to claim 6, wherein the dome body and the first and second walls are of split construction.
11. The sound production device as claimed in claim 9 or 10, wherein the dome is made of any one of magnesium aluminum alloy, carbon fiber, stainless steel or aluminum alloy.
12. The sounding device according to claim 6, wherein the elastic support assembly comprises two elastic support assemblies respectively located at two opposite sides of the voice coil, each elastic support assembly comprises an elastic member and an auxiliary diaphragm attached to the elastic member; the first section is fixedly connected to one side of the elastic part far away from the auxiliary diaphragm.
13. The sounder device according to claim 12, wherein the resilient member comprises a first fixed arm secured to the frame, two second fixed arms each supporting two of the second segments secured to the same second wall, and two resilient arms extending from the first fixed arm toward each of the two second fixed arms and forming a fixed connection; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section and a first connecting portion and a second connecting portion, wherein the first connecting portion and the second connecting portion extend from two opposite sides of the folding ring respectively, the first connecting portion is fixed on the first fixing arm, and the second connecting portion is fixed on the first section.
14. The sounder device according to claim 13, wherein two of the resilient support members are each connected to the voice coil; the four second fixing arms of the two elastic pieces are respectively fixed on the bottom surface of the voice coil.
15. The sounder device according to claim 13, wherein two of the resilient support members are each spaced from the voice coil.
16. The sounder device according to claim 13, wherein the spring is a flexible circuit board electrically connected to the voice coil.
17. The sounder device according to claim 13, wherein each of the first secondary magnetic steels is located between the first segment and the voice coil on the same side as the first secondary magnetic steel.
18. The sounder device according to claim 17, wherein the voice coil is a rounded rectangular structure; the two elastic support assemblies are positioned on two sides of the short shaft of the voice coil, and the two first auxiliary magnetic steels are positioned on two sides of the short shaft of the voice coil.
19. The sound production device as claimed in claim 17, wherein the magnetic circuit system further comprises two second secondary magnetic steels disposed at intervals on two opposite sides of the main magnetic steel; and the two second secondary magnetic steels are positioned between the two elastic supporting components.
20. The sounder device according to claim 19, wherein the voice coil is a rounded rectangular structure; two the elastic support subassembly is located the both sides of the minor axis of voice coil loudspeaker voice coil, two first pair magnet steel is located the both sides of the minor axis of voice coil loudspeaker voice coil, two the vice magnet steel of second is located the both sides of the major axis of voice coil loudspeaker voice coil.
21. The sounding device according to claim 20, wherein the magnetic circuit system further comprises a main pole core stacked on the main magnetic steel, two first auxiliary pole cores stacked on the two second auxiliary magnetic steels respectively, and a top plate embedded in the basin stand, the top plate comprises a ring-shaped fixing ring fixed on the basin stand and two second auxiliary pole cores extending from the fixing ring to the second auxiliary magnetic steels respectively, and the two auxiliary pole cores are stacked on the two second auxiliary magnetic steels respectively.
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CN109889964B (en) * 2018-12-30 2021-02-26 瑞声科技(新加坡)有限公司 Sound production device

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US6863152B1 (en) * 1998-11-30 2005-03-08 Joseph Yaacoub Sahyoun Low profile audio speaker
JP4188182B2 (en) * 2003-09-02 2008-11-26 パイオニア株式会社 Speaker
CN201657281U (en) * 2010-05-21 2010-11-24 歌尔声学股份有限公司 Moving-coil-type electroacoustic transducer
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