CN111093138B - Sound production device - Google Patents

Sound production device Download PDF

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Publication number
CN111093138B
CN111093138B CN201911280516.5A CN201911280516A CN111093138B CN 111093138 B CN111093138 B CN 111093138B CN 201911280516 A CN201911280516 A CN 201911280516A CN 111093138 B CN111093138 B CN 111093138B
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China
Prior art keywords
voice coil
arm
vibrating
vibrating diaphragm
fixed
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CN201911280516.5A
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CN111093138A (en
Inventor
宋威
张帆
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201911280516.5A priority Critical patent/CN111093138B/en
Publication of CN111093138A publication Critical patent/CN111093138A/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
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/16Mounting or tensioning of diaphragms or cones
    • 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

Abstract

The invention discloses 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 and driving the vibrating diaphragm to vibrate and sound, an auxiliary vibrating piece fixed on the basin frame and arranged opposite to the vibrating diaphragm at an interval, an elastic conductive piece and a framework connecting the auxiliary vibrating piece and the vibrating diaphragm; elastic conductive piece is including being fixed in the fixed arm of basin frame, laminate in the vibrating diaphragm is close to the linking arm and the connection of voice coil loudspeaker voice coil one side the fixed arm with the bullet arm of linking arm, the linking arm with the voice coil loudspeaker voice coil electricity is connected, play the arm with the vibrating diaphragm interval sets up and suspension in the vibrating diaphragm below. Compared with the related art, the sound production device has good stability and good acoustic performance.

Description

Sound production device
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, 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. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices.
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, insert and locate the magnetic gap is in order to drive voice coil loudspeaker voice coil and 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 supplementary vibration piece of vibrating diaphragm one end, supplementary vibration piece include the shell fragment and laminate in the supplementary vibration piece of shell fragment. The magnetic circuit system comprises a magnetic yoke, main magnetic steel fixed on the magnetic yoke and auxiliary magnetic steel which is annularly arranged on the main magnetic steel and forms the magnetic gap with the main magnetic steel at intervals.
However, in the sound generating device of the related art, the diaphragm and the auxiliary vibrating member are respectively fixed at two opposite ends of the voice coil, and although the auxiliary vibrating member can effectively increase the vibration performance of the diaphragm, the elastic sheet and the auxiliary vibrating member are in a joint design so that the two are mutually influenced and restricted, and the space cannot be effectively utilized; moreover, the elastic sheet needs to extend into the magnetic gap to be electrically connected with the voice coil, so that the auxiliary magnetic steel needs to form an abdicating space, the volume of a magnetic circuit system is reduced and limited, and the acoustic performance of the sound production device is improved and 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 overcome the technical problems and provide a sound production device with good reliability and good acoustic performance.
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 and driving the vibrating diaphragm to vibrate and sound, an auxiliary vibrating piece fixed on the basin frame and arranged opposite to the vibrating diaphragm at an interval, an elastic conductive piece and a framework connecting the auxiliary vibrating piece and the vibrating diaphragm; elastic conductive piece is including being fixed in the fixed arm of basin frame, laminate in the vibrating diaphragm is close to the linking arm and the connection of voice coil loudspeaker voice coil one side the fixed arm with the bullet arm of linking arm, the linking arm with the voice coil loudspeaker voice coil electricity is connected, play the arm with the vibrating diaphragm interval sets up and suspension in the vibrating diaphragm below.
Preferably, the elastic conductive members include two elastic conductive members, and the two elastic conductive members are spaced from each other and symmetrically arranged.
Preferably, the basin frame is rectangular, and the two fixing arms are arranged in the same elastic conductive piece and are respectively fixed on two short shaft sides of the basin frame; the elastic arm comprises two first elastic arms and a second elastic arm which connects the two first elastic arms to the fixed arm at the same time, and the first elastic arms are bent from one end of the fixed arm and extend to the position, along one long axis side of the basin frame, where the first elastic arms are connected with the second elastic arms.
Preferably, at least a part of the orthogonal projection of the connecting arm to the voice coil along the vibration direction of the diaphragm is located on the inner side of the voice coil, and the part of the connecting arm located on the inner side of the voice coil is electrically connected with the voice coil.
Preferably, the skeleton is including encircleing and locating the voice coil loudspeaker voice coil outside and with the voice coil loudspeaker voice coil interval sets up relatively and encloses into accommodating space's skeleton connecting portion jointly, skeleton connecting portion be equipped with roof that the vibrating diaphragm is relative, with diapire and connection that supplementary vibration piece is relative the roof with the lateral wall of diapire, the roof with the vibrating diaphragm is connected, the diapire with supplementary vibration piece is connected, the lateral wall with the voice coil loudspeaker voice coil interval sets up relatively.
Preferably, the framework further comprises framework supporting parts which are positioned at the inner sides of the framework connecting parts and are arranged at intervals, and framework extending parts which are connected with the framework supporting parts and the framework connecting parts; the framework supporting part is positioned between the vibrating diaphragm and the voice coil and suspends the voice coil below the vibrating diaphragm, and the framework extending part connects one end of the framework supporting part close to the vibrating diaphragm with the top wall of the framework connecting part; the framework supporting part is provided with a fracture, and the connecting arm passes through the fracture and extends to the voice coil is inboard from the voice coil top.
Preferably, the vibrating diaphragm comprises a vibrating part, a folded ring part bent and extended from the periphery of the vibrating part, and a fixing part bent and extended outwards from one side of the folded ring part far away from the vibrating part, and the fixing part is fixed on the basin stand; the folded ring part is of an arc structure which is sunken towards the direction far away from the magnetic circuit system, the elastic arm and the folded ring part are arranged at intervals, and the orthographic projection of the elastic arm and the folded ring part along the vibration direction of the vibrating diaphragm completely falls within the range of the folded ring part; the connecting arm is attached to one side, close to the voice coil, of the vibration part.
Preferably, the vibration part includes a vibration part main body, a through hole penetrating through the vibration part main body along the vibration direction, and a dome covering the vibration part main body and completely covering the through hole, and the connecting arm is attached to the dome; the top wall of the skeleton connecting portion is connected with the vibrating portion main body.
Preferably, the voice coil is of a rectangular structure with round corners, and the framework extension parts comprise four parts and are respectively located at the positions of the four round corners of the voice coil; the framework connecting parts comprise two parts which are respectively positioned at two opposite sides of the short shaft of the voice coil.
Preferably, the magnetic circuit system comprises a magnetic yoke, main magnetic steel fixed on the magnetic yoke and a polar plate attached to the main magnetic steel, and one side of the polar plate close to the vibrating diaphragm is provided with a yielding groove corresponding to the connecting arm.
Compared with the prior art, the voice coil and the auxiliary vibrating piece are arranged at intervals, the auxiliary vibrating piece is connected with the vibrating diaphragm through the skeleton, the aim of enhancing the vibrating performance of the vibrating diaphragm is fulfilled, the auxiliary vibrating piece is designed independently, and the voice coil can be better inhibited from swinging after the skeleton is connected with the voice coil; simultaneously, set up the elastic conductive piece between vibrating diaphragm and basin frame, including the fixed arm that is fixed in the basin frame, laminate in the vibrating diaphragm is close to the linking arm of voice coil loudspeaker voice coil one side and connect the fixed arm with the bullet arm of linking arm, the linking arm with the voice coil loudspeaker voice coil electricity is connected, bullet arm with the vibrating diaphragm interval sets up and suspension in the below of the vibrating diaphragm, and this structure has eliminated the restriction to the voice coil loudspeaker voice coil when supplementary vibrating piece and elastic conductive piece are directly connected with the voice coil loudspeaker voice coil lower extreme, and the voice coil loudspeaker voice coil height no longer is restricted to supplementary vibrating piece and elastic conductive piece, and the whole height of sounding piece can be designed more frivolous; meanwhile, the design limitation on a magnetic circuit system is eliminated, the auxiliary vibrating piece is not directly glued with the voice coil, the elastic conductive piece is not directly connected with the lower end of the voice coil, the magnetic circuit system does not need the abdicating auxiliary vibrating piece and the elastic conductive piece, the magnetic circuit system can realize a maximized annular magnetic circuit structure, and the acoustic performance of the sound generating device is effectively improved; and the voice coil is connected with the elastic conductive piece by its one end that is close to the vibrating diaphragm for the bullet arm can make full use of the space of direction under the vibrating diaphragm to design, and the bullet arm degree of freedom is bigger, and the reliability is better.
[ 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 sectional view taken along line A-A of FIG. 1;
FIG. 4 is an enlarged view of the portion B of FIG. 3;
FIG. 5 is a sectional view taken along line C-C of FIG. 1;
FIG. 6 is an enlarged view of a portion D of FIG. 5;
FIG. 7 is a schematic perspective view of an elastic conductive member of the sound device of the present invention;
FIG. 8 is a schematic perspective view of a skeleton of a sound device according to the present invention;
FIG. 9 is a schematic view of an assembly structure of the speaker device skeleton, the elastic conductive member, the auxiliary vibrating member and the voice coil according to the present invention;
fig. 10 is a schematic view of an assembly structure of the frame, the elastic conductive member, the auxiliary vibrating member, the voice coil, the main magnetic steel and the auxiliary magnetic steel of the sound generating device of the present invention.
[ 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.
Please refer to fig. 1-2, wherein fig. 1 is a schematic perspective view of a sound generating device according to the present invention; fig. 2 is an exploded perspective view of a part of the sound producing device of the present invention. The invention provides a sounding device 100, which comprises a basin frame 1, a vibration system 2 and a magnetic circuit system 3.
The basin stand 1 is used for supporting the vibration system 2 and the magnetic circuit system 3, and in the embodiment, the basin stand 1 is rectangular. The magnetic circuit system 3 has a magnetic gap 30, and the magnetic circuit system 3 is used for driving the vibration system 2 to vibrate and generate sound.
Vibration system 2 is including being fixed in the vibrating diaphragm 21 of basin frame 1, insert and locate magnetic gap 30 and drive the voice coil loudspeaker voice coil 22 of vibrating diaphragm vibration sound production, be fixed in basin frame 1 and with the supplementary vibration piece 23 that the relative interval of vibrating diaphragm 21 set up, be located the voice coil loudspeaker voice coil 22 is close to the elastic conductive piece 24 of vibrating diaphragm 21 one end and general supplementary vibration piece 23 with the skeleton 25 that vibrating diaphragm 21 is connected. Specifically, one end of the auxiliary vibrating member 23 is fixed to the frame 1, the other end of the auxiliary vibrating member is supported and fixed to the frame 25, and the elastic conductive member 24 is located between the frame 1 and the vibrating diaphragm 21.
Please refer to fig. 3-10, wherein fig. 3 is a cross-sectional view taken along line a-a of fig. 1; FIG. 4 is an enlarged view of the portion B of FIG. 3; FIG. 5 is a sectional view taken along line C-C of FIG. 1; FIG. 6 is an enlarged view of a portion D of FIG. 5; FIG. 7 is a schematic perspective view of an elastic conductive member of the sound device of the present invention; FIG. 8 is a schematic perspective view of a skeleton of a sound device according to the present invention; FIG. 9 is a schematic view of an assembly structure of the speaker device skeleton, the elastic conductive member, the auxiliary vibrating member and the voice coil according to the present invention; fig. 10 is a schematic view of an assembly structure of the frame, the elastic conductive member, the auxiliary vibrating member, the voice coil, the main magnetic steel and the auxiliary magnetic steel of the sound generating device of the present invention.
Specifically, the diaphragm 21 includes a vibrating portion 211, a folded ring portion 212 bent and extended from a periphery of the vibrating portion 211, and a fixing portion 213 bent and extended from a side of the folded ring portion 212 away from the vibrating portion 211.
The fixing portion 213 is fixed to the frame 1, and the loop portion 212 is an arc structure recessed in a direction away from the magnetic circuit system 3.
Preferably, the vibration portion 211 includes a vibration portion main body 2111, a through opening 2112 penetrating the vibration portion main body 2111 in the vibration direction of the diaphragm 21, and a dome 2113 covering the vibration portion main body 2111 and completely covering the through opening 2112.
In the present embodiment, the voice coil 22 has a rectangular structure with rounded corners.
The auxiliary vibrating member 23 is an auxiliary vibrating diaphragm, and in this embodiment, the auxiliary vibrating member 23 includes two parts and is respectively disposed on two opposite sides of the voice coil 22.
The elastic conductive device 24 includes a fixing arm 241 fixed to the frame 1, a connecting arm 242 attached to one side of the diaphragm 21 close to the voice coil 22, and an elastic arm 243 connecting the fixing arm 241 and the connecting arm 242, as shown in fig. 6. In this embodiment, the elastic conductive member 24 is a flexible circuit board, but is not limited thereto, and a conductive circuit may be disposed on the elastic circuit board.
The fixing arm 241 is located between the frame 1 and the diaphragm 21. Specifically, in the present embodiment, the fixing portion 213 of the diaphragm 21 is fixed to the frame 1. A pad is embedded in the basin stand 1, and the fixing arm 241 is electrically connected through the pad and used for introducing an external power signal.
The connection arm 242 is electrically connected to the voice coil 22. Preferably, at least a portion of the connecting arm 242, which is located on the inner side of the voice coil 22 along the forward projection of the vibrating direction of the diaphragm 21 to the voice coil 22, is electrically connected to the voice coil 22, so that the lead of the voice coil 22 and the connecting arm 242 do not occupy the space of the magnetic circuit system 3 when being welded. Specifically, in the present embodiment, the connection arm 242 is attached to the side of the vibration portion 211 close to the voice coil 22. Preferably, the connecting arm 242 is attached to the dome 2113.
The elastic arm 243 is spaced from the diaphragm 21 and suspended below the diaphragm 21. Specifically, the elastic arm and the folded ring part 212 are arranged at an interval, and the orthographic projection of the elastic arm to the folded ring part 212 along the vibration direction of the diaphragm 21 completely falls within the range of the folded ring part 212, so that the elastic arm 243 can be designed by fully utilizing the space below the folded ring part 212, the design freedom degree is high, and the reliability of the elastic arm 243 is improved.
In this embodiment, the elastic conductive members 24 include two elastic conductive members 24, and the two elastic conductive members 24 are spaced apart from each other and are symmetrically disposed.
Specifically, in the same elastic conductive piece 24, the two fixing arms 241 include two fixing arms 241, and the two fixing arms 241 are respectively fixed to two short axis sides of the basin frame 1.
The elastic arm 243 includes two first elastic arms 2431 and a second elastic arm 2432 connecting the two first elastic arms 2431 to the fixing arm 241 at the same time. The two fixing arms 241 extend along two short axis sides of the basin stand 1, and the first elastic arm 2431 is bent from one end of the fixing arm 241 and extends along one long axis side of the basin stand 1 to be connected with the second elastic arm 2432. Of course, since the elastic arm 243 is suspended, the first elastic arm 2431 and the second elastic arm 2432 are both spaced from the basin stand 1.
In this embodiment, the elastic conductive member 24 is disposed between the diaphragm 21 and the frame 1, so that the limitation on the voice coil 22 when the elastic conductive member 24 is directly connected to the lower end of the voice coil 22 is eliminated, and the limitation on the design of the magnetic circuit system 3 is eliminated, and the magnetic circuit system does not need to abdicate the elastic conductive member 24; moreover, the voice coil 22 is electrically connected to the elastic conductive member 24 from one end thereof close to the diaphragm 21, so that the elastic arm 243 can be designed by fully utilizing the space below the diaphragm 21, the degree of freedom of the elastic arm 243 is greater, and the reliability is better.
In this embodiment, the elastic conductive members 24 include two elastic conductive members 24, and the two elastic conductive members 24 are spaced apart from each other and are symmetrically disposed, so as to improve stability and reliability.
The framework 25 will the auxiliary vibration piece 23 with the vibrating diaphragm 21 is connected, and more preferably, the framework 25 will the auxiliary vibration piece 23 with the voice coil 22 is connected, and further, the framework 25 will the voice coil 22 with the vibrating diaphragm 21 is connected.
Specifically, the bobbin 25 includes a bobbin connecting portion 251 surrounding the outer side of the voice coil 22 and disposed opposite to the voice coil 22 at an interval and enclosing the receiving space 10, a bobbin supporting portion 252 disposed inside the bobbin connecting portion 251 at an interval, and a bobbin extending portion 253 connecting the bobbin supporting portion 252 and the bobbin connecting portion 251, as shown in fig. 7.
In this embodiment, the bobbin connecting portion 251 includes two portions and is respectively located at two opposite sides of the short axis of the voice coil 22.
The frame connecting portion 251 is provided with a top wall 2511 opposite to the diaphragm 21, a bottom wall 2512 opposite to the auxiliary vibrating member 23, and a side wall 2513 connecting the top wall 2511 and the bottom wall 2512.
The top wall 2511 is connected to the diaphragm 21, and specifically, the top wall 2511 is connected to the vibration portion main body 2111 of the diaphragm 21; the bottom wall 2512 is connected to the auxiliary vibrating member 23; the side wall 2513 and the voice coil 22 are oppositely arranged at intervals and jointly enclose the accommodating space 10, and the accommodating space 10 is used for accommodating a part of the magnetic circuit system 3.
The skeleton support portion 252 is located between the diaphragm 21 and the voice coil 22 and suspends the voice coil 22 below the diaphragm 21, so that the top of the voice coil 22 is connected with the diaphragm 21, and specifically, the skeleton support portion 252 is connected to the ball top 2113 of the diaphragm 21.
In the present embodiment, the frame support portion 252 has a ring structure.
Preferably, the skeleton supporting portion 252 has a fracture 2521, and the connecting arm 242 of the elastic conductive member 24 extends from the voice coil 22 to the inside of the voice coil 22 through the fracture 2521.
In this embodiment, the frame supporting portion 252 is in a ring shape, including a continuous ring shape, which is an integral structure; also, discontinuous ring shapes are included, i.e., the frame support 252 may be a plurality of segments of spaced and co-enclosing ring shapes.
The bobbin extension 253 connects one end of the bobbin support 251 near the diaphragm 21 with the top wall 2511 of the bobbin connection 251.
Specifically, the bobbin extension 253 includes four and is respectively located at four rounded positions of the voice coil 22.
The framework 25 is structurally arranged, so that the auxiliary elastic piece 23 is connected with the vibrating diaphragm 21, the vibrating diaphragm 21 is supported to provide larger elasticity, and the acoustic performance is improved; and the auxiliary elastic piece 23 is connected with the top end of the voice coil 22, so that the vibration stability is improved, and meanwhile, the voice coil 22 is connected with the vibrating diaphragm 21, so that the vibrating diaphragm 21 is driven by the voice coil 22 to vibrate.
In the sound production device, the elastic conductive piece 24 and the auxiliary vibration piece 23 are separately designed, so that the auxiliary vibration piece 23 is independently designed, and the voice coil 22 can be better inhibited from swinging after being connected with the voice coil 22 through the framework 25. Meanwhile, the elastic conductive piece 24 is arranged between the vibrating diaphragm 21 and the basin frame 1, the elastic arm 243 of the elastic conductive piece 24 and the vibrating diaphragm 21 are arranged at intervals and are suspended below the vibrating diaphragm 21, the structure eliminates the limitation on the voice coil 22 when the auxiliary vibrating piece 23 and the elastic conductive piece 24 are directly connected with the lower end of the voice coil 2, the height of the voice coil 22 is not limited by the auxiliary vibrating piece 23 and the elastic conductive piece 24, and the whole height of the sound generating piece 100 can be designed to be thinner and lighter. Meanwhile, the design limitation on the magnetic circuit system 3 is eliminated, the auxiliary vibrating piece 23 is not directly glued with the voice coil 22, and the elastic conductive piece is not directly connected with the lower end of the voice coil 22, so that the magnetic circuit system 3 does not need to abdicate the auxiliary vibrating piece 23 and the elastic conductive piece 24, the magnetic circuit system 3 can realize a maximized annular magnetic circuit structure, and the acoustic performance of the sound production device is effectively improved.
The magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32 fixed to the magnetic yoke 31, and a secondary magnetic steel 33 surrounding the main magnetic steel 32 at intervals, wherein the secondary magnetic steel 33 is annular and surrounds the main magnetic steel 32 to form the magnetic gap 30.
The auxiliary magnetic steel 33 is located on one side of the auxiliary vibration part 23 close to the main magnetic steel 32, the magnetic circuit system 3 is fixed with the basin stand 1 through the auxiliary magnetic steel 33 so as to realize the fixed connection of the magnetic circuit system 3 and the basin stand 1, and at least part of the auxiliary magnetic steel 33 is located in the accommodating space 30. The maximization of the magnetic circuit system 3 is realized, the driving force is effectively improved, and the sound production performance is improved.
Furthermore, the magnetic circuit system 3 may further include a clamping plate 34 attached to the secondary magnetic steel 33 and a pole plate 35 attached to the primary magnetic steel 32, and both the clamping plate 34 and the pole plate 35 may be used for magnetic conduction, so as to improve driving force. Preferably, a receding groove 351 corresponding to the connecting arm 242 is formed on one side of the polar plate 35 close to the diaphragm 21. The receding groove 351 recedes the connecting arm 242 to provide a vibration space when the elastic conductive device 24 vibrates with the diaphragm 21.
Compared with the prior art, the voice coil and the auxiliary vibrating piece are arranged at intervals, the auxiliary vibrating piece is connected with the vibrating diaphragm through the skeleton, the aim of enhancing the vibrating performance of the vibrating diaphragm is fulfilled, the auxiliary vibrating piece is designed independently, and the voice coil can be better inhibited from swinging after the skeleton is connected with the voice coil; simultaneously, set up the elastic conductive piece between vibrating diaphragm and basin frame, including the fixed arm that is fixed in the basin frame, laminate in the vibrating diaphragm is close to the linking arm of voice coil loudspeaker voice coil one side and connect the fixed arm with the bullet arm of linking arm, the linking arm with the voice coil loudspeaker voice coil electricity is connected, bullet arm with the vibrating diaphragm interval sets up and suspension in the below of the vibrating diaphragm, and this structure has eliminated the restriction to the voice coil loudspeaker voice coil when supplementary vibrating piece and elastic conductive piece are directly connected with the voice coil loudspeaker voice coil lower extreme, and the voice coil loudspeaker voice coil height no longer is restricted to supplementary vibrating piece and elastic conductive piece, and the whole height of sounding piece can be designed more frivolous; meanwhile, the design limitation on a magnetic circuit system is eliminated, the auxiliary vibrating piece is not directly glued with the voice coil, the elastic conductive piece is not directly connected with the lower end of the voice coil, the magnetic circuit system does not need the abdicating auxiliary vibrating piece and the elastic conductive piece, the magnetic circuit system can realize a maximized annular magnetic circuit structure, and the acoustic performance of the sound generating device is effectively improved; and the voice coil is connected with the elastic conductive piece by its one end that is close to the vibrating diaphragm for the bullet arm can make full use of the space of direction under the vibrating diaphragm to design, and the bullet arm degree of freedom is bigger, and the reliability is better.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

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; vibration system is including being fixed in the vibrating diaphragm of basin frame, insert and locate magnetic gap and drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production and be fixed in the basin frame and with the supplementary vibration piece that the relative interval of vibrating diaphragm set up, its characterized in that, vibration system still includes:
the elastic conductive piece comprises a fixed arm fixed on the basin frame, a connecting arm attached to one side, close to the voice coil, of the vibrating diaphragm and an elastic arm connecting the fixed arm and the connecting arm, the connecting arm is electrically connected with the voice coil, and the elastic arm and the vibrating diaphragm are arranged at intervals and suspended below the vibrating diaphragm; and the number of the first and second groups,
the framework is used for connecting the auxiliary vibrating piece with the vibrating diaphragm;
the elastic conductive pieces comprise two elastic conductive pieces which are arranged at intervals and symmetrically;
the basin frame is rectangular, and the two fixing arms are arranged in the same elastic conductive piece and are respectively fixed on two short shaft sides of the basin frame; the elastic arm comprises two first elastic arms and a second elastic arm which connects the two first elastic arms to the fixed arm at the same time, and the first elastic arms are bent from one end of the fixed arm and extend to the position, along one long axis side of the basin frame, where the first elastic arms are connected with the second elastic arms.
2. The sounding device according to claim 1, wherein the portion of the connecting arm, which is located inside the voice coil, is electrically connected to the voice coil, and the portion of the connecting arm, which is located inside the voice coil, is located at least partially inside the voice coil in the orthogonal projection of the vibrating diaphragm to the voice coil.
3. The sounding device according to claim 1, wherein the bobbin includes a bobbin connecting portion surrounding the voice coil and disposed outside the voice coil and spaced from and facing the voice coil to form a receiving space, the bobbin connecting portion includes a top wall facing the diaphragm, a bottom wall facing the auxiliary vibrating member, and a sidewall connecting the top wall and the bottom wall, the top wall is connected to the diaphragm, the bottom wall is connected to the auxiliary vibrating member, and the sidewall is spaced from and facing the voice coil.
4. The sounding device according to claim 3, wherein the frame further comprises a frame supporting portion and a frame extending portion, wherein the frame supporting portion is located inside the frame connecting portion and arranged at intervals, and the frame extending portion connects the frame supporting portion and the frame connecting portion; the framework supporting part is positioned between the vibrating diaphragm and the voice coil and suspends the voice coil below the vibrating diaphragm, and the framework extending part connects one end of the framework supporting part close to the vibrating diaphragm with the top wall of the framework connecting part; the framework supporting part is provided with a fracture, and the connecting arm passes through the fracture and extends to the voice coil is inboard from the voice coil top.
5. The sounding device according to claim 4, wherein the diaphragm comprises a vibrating portion, a corrugated portion extending from a periphery of the vibrating portion, and a fixing portion extending from a side of the corrugated portion away from the vibrating portion, the fixing portion being fixed to the frame; the folded ring part is of an arc structure which is sunken towards the direction far away from the magnetic circuit system, the elastic arm and the folded ring part are arranged at intervals, and the orthographic projection of the elastic arm and the folded ring part along the vibration direction of the vibrating diaphragm completely falls within the range of the folded ring part; the connecting arm is attached to one side, close to the voice coil, of the vibration part.
6. The sounding device according to claim 5, wherein the vibrating portion comprises a vibrating portion body, a through opening extending through the vibrating portion body along the vibration direction, and a dome covering the vibrating portion body and completely covering the through opening, the connecting arm being attached to the dome; the top wall of the skeleton connecting portion is connected with the vibrating portion main body.
7. The sounding device according to claim 4, wherein the voice coil is a rectangular structure with rounded corners, and the bobbin extension comprises four and is respectively located at the positions of the four rounded corners of the voice coil; the framework connecting parts comprise two parts which are respectively positioned at two opposite sides of the short shaft of the voice coil.
8. The sound production device according to any one of claims 3 to 7, wherein the magnetic circuit system comprises a magnetic yoke, a main magnetic steel fixed on the magnetic yoke, and a pole plate attached to the main magnetic steel, and a recess corresponding to the connecting arm is provided on a side of the pole plate close to the diaphragm.
CN201911280516.5A 2019-12-13 2019-12-13 Sound production device Active CN111093138B (en)

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CN201911280516.5A CN111093138B (en) 2019-12-13 2019-12-13 Sound production device

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