CN109348370B - Sound production device - Google Patents
Sound production device Download PDFInfo
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- CN109348370B CN109348370B CN201811161241.9A CN201811161241A CN109348370B CN 109348370 B CN109348370 B CN 109348370B CN 201811161241 A CN201811161241 A CN 201811161241A CN 109348370 B CN109348370 B CN 109348370B
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- voice coil
- fixed
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- frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Abstract
The invention discloses a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the basin frame is provided with a basin opening; the vibration system comprises a vibrating diaphragm, a voice coil, an elastic support assembly and a support framework; the supporting framework comprises a ring-shaped framework main body and at least two framework connecting parts extending outwards from the framework main body; the framework main body is positioned between the vibrating diaphragm and the voice coil, and at least the framework connecting parts are connected in pairs; the skeleton connecting portion be equipped with the relative roof of vibrating diaphragm, with the diapire that the elastic support subassembly is relative and be connected the roof with the lateral wall of diapire, the roof with the bottom surface of vibrating diaphragm is connected, the lateral wall with the side of voice coil loudspeaker voice coil is connected, the diapire with the elastic support subassembly is connected, be used for with voice coil loudspeaker voice coil elasticity hang in the vibrating diaphragm below. Compared with the related art, the sound production device has good stability and good acoustic performance.
Description
[ 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, 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 improvement of the acoustic performance 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 overcome the technical problems and provide a sound production device with good stability 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 elastic support component fixed on the basin frame and opposite to the vibrating diaphragm and arranged at intervals, and a support framework; the supporting framework comprises a ring-shaped framework main body and at least two framework connecting parts extending outwards from the framework main body; the framework main body is positioned between the vibrating diaphragm and the voice coil, and the framework connecting part is used for elastically suspending the voice coil below the vibrating diaphragm; the framework connecting part is provided with a top wall opposite to the vibrating diaphragm, a bottom wall opposite to the elastic supporting component and a side wall connected with the top wall and the bottom wall, the top wall is connected with the vibrating diaphragm, the side wall is connected with the side face of the voice coil, and the bottom wall is connected with the elastic supporting component.
Preferably, the elastic support components are arranged together to form 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 top wall and the bottom wall are respectively located at two different sides of the side wall.
Preferably, two adjacent framework connecting parts are mutually spaced and jointly enclose an accommodating space. Preferably, the bobbin body includes a first body connected to the diaphragm, a second body connected to the voice coil, and a third body extending from the diaphragm toward the voice coil and connecting the first body and the second body.
Preferably, the orthographic projection of the framework main body along the vibration direction of the diaphragm falls on the voice coil.
Preferably, the framework main body and the framework connecting part are of an integrally formed structure.
Preferably, the framework main body and the framework connecting part are made of metal materials and are integrally formed through a stamping process.
Preferably, the framework main body and the framework connecting part are of a split structure.
Preferably, the skeleton connecting part includes four and sets up at interval respectively, every two the skeleton connecting part is a set of and passes through the skeleton main part is connected.
Preferably, the voice coil is a rectangular structure with round corners, and the four framework connecting parts are respectively located at the positions of the four round corners of the voice coil.
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 framework connecting part is fixed on one side of the elastic part, which is far away from the auxiliary diaphragm.
Preferably, the elastic part comprises a first fixing arm fixed on the basin frame, two second fixing arms respectively supported and fixed on two adjacent framework connecting parts, and two elastic arms which are respectively extended from the first fixing arm to the two second fixing arms and are fixedly connected with each other; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section, and a first connecting part and a second connecting part which respectively extend from two opposite sides of the folding ring, wherein the first connecting part is fixed on one side of the first fixing arm far away from the support framework, and the second connecting part is fixed on one side of the second fixing arm far away from the support framework, so that the folding ring and the elastic arm are oppositely arranged; the bottom wall is supported by the second fixing arm.
Preferably, the elastic part comprises a first fixing arm fixed on the basin frame, two second fixing arms respectively supported and fixed on two adjacent framework connecting parts, and two elastic arms which are respectively extended from the first fixing arm to the two second fixing arms and are fixedly connected with each other; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section, and a first connecting part and a second connecting part which respectively extend from two opposite sides of the folding ring, wherein the first connecting part is fixed on one side of the first fixing arm far away from the support framework, and the second connecting part is fixed on one side of the second fixing arm far away from the support framework, so that the folding ring and the elastic arm are oppositely arranged; the bottom wall is connected to the second connecting portion.
Preferably, the elastic part comprises a first fixing arm fixed on the basin frame, two second fixing arms respectively supported and fixed on two adjacent framework connecting parts, and two elastic arms which are respectively extended from the first fixing arm to the two second fixing arms and are fixedly connected with each other; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section, and a first connecting part and a second connecting part which respectively extend from two opposite sides of the folding ring, wherein the first connecting part is fixed on one side of the first fixing arm far away from the support framework, and the second connecting part is fixed on one side of the second fixing arm far away from the support framework, so that the folding ring and the elastic arm are oppositely arranged; the bottom wall is clamped and fixed between the second fixing arm and the second connecting portion.
Preferably, the elastic part is a flexible circuit board, and the voice coil is electrically connected with the elastic part.
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 on two opposite sides of the main magnetic steel at intervals and forming the magnetic gap with the main magnetic steel, wherein each first auxiliary magnetic steel is located between the two elastic support assemblies.
Preferably, the voice coil is of a rectangular structure with round corners, the first auxiliary magnetic steel is located on two sides of a long shaft of the voice coil, and the elastic support assemblies are located on two sides of a short shaft of the voice coil.
Preferably, the magnetic circuit system further comprises two second secondary magnetic steels respectively arranged at intervals on the other two opposite sides of the main magnetic steel.
Preferably, the voice coil loudspeaker voice coil is the rectangle structure of taking the fillet, two first pair magnet steel is located the major axis both sides of voice coil loudspeaker voice coil, two elastic support component is located the minor axis both sides of voice coil loudspeaker voice coil, two the vice magnet steel of second is located the minor axis both sides of voice coil loudspeaker voice coil, and each the vice magnet steel of second is located same two of elastic support component between the second fixed arm.
Preferably, the vice magnet steel of second includes the magnet steel body and by the magnet steel rib that forms is extended respectively at the both ends of magnet steel body, each the magnet steel rib do not extend to one skeleton connecting portion with between the voice coil loudspeaker voice coil.
Preferably, the auxiliary diaphragm is provided with a yielding groove which is formed by one side of the auxiliary diaphragm close to the voice coil and is sunken in the direction of the basin frame, and the magnetic steel body extends into the yielding groove.
Preferably, magnetic circuit still includes the punch holder, the punch holder including be fixed in the basin frame be annular solid fixed ring with by gu fixed ring respectively to first vice magnet steel with four utmost point cores that the vice magnet steel of second extends, four the utmost point core is folded respectively and is located first vice magnet steel with the vice magnet steel of second, just extremely the core respectively with correspond first vice magnet steel or the shape matching of the vice magnet steel of second.
Preferably, the mass proportion of the diaphragm to the voice coil is less than 1: 5.
Compared with the prior art, in the sound production device, the voice coil and the vibrating diaphragm as well as the voice coil and the elastic support assembly are arranged at intervals, the support framework which comprises the annular framework main body and at least two framework connecting parts extending outwards from the framework main body is arranged, so that the framework main body is positioned between the vibrating diaphragm and the voice coil, the framework connecting parts are used for elastically suspending the voice coil below the vibrating diaphragm, the top wall of the framework connecting part is connected with the bottom surface of the vibrating diaphragm, the side wall of the framework connecting part is connected with the side surface of the voice coil, and the bottom wall of the framework connecting part is connected with the elastic support assembly. The structure enables the elastic support component to be connected with the voice coil through the support framework, so that on one hand, the transverse swing of the voice coil during vibration is restrained, and the stability of the voice coil is improved; on the other hand, the limitation of the elastic support component on the voice coil when the elastic support component is directly connected with the voice coil is eliminated, the height of the voice coil is not limited by the elastic support component any more, and the overall height of the sound production device can be designed to be thinner and lighter; meanwhile, the design limitation on the magnetic circuit system is eliminated, the elastic support component is not directly glued with the voice coil, the magnetic circuit system does not need to be abducted, the magnetic circuit system can realize a maximized multi-magnetic steel three-magnetic circuit or five-magnetic circuit structure, and the acoustic performance of the sound production device is effectively improved.
[ 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 view of a sound device according to the present invention;
FIG. 4 is an enlarged view of the portion indicated by B in FIG. 3;
FIG. 5 is a sectional view taken along line A-A of FIG. 1;
FIG. 6 is an enlarged view of the portion indicated by C in FIG. 5;
FIG. 7 is a schematic view of a three-dimensional structure of the assembly of the support frame and the second auxiliary magnetic steel of the sound device of the present invention;
FIG. 8 is a schematic view of the structure of FIG. 7 from another perspective;
FIG. 9 is a schematic perspective view of the assembly of the voice coil and the support frame of the sound device according to the present invention;
FIG. 10 is a schematic perspective view of the assembly of the elastic support assembly and the support frame of the sound device according to the present invention;
FIG. 11 is a schematic perspective view of an elastic support assembly of the sound device of the present invention;
FIG. 12 is an exploded perspective view of the resilient support assembly of the sound device of the present invention;
fig. 13 is a schematic view of the assembly of the elastic support component and the second auxiliary magnetic steel of the sound production 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. 1-4, 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 sound device according to the present invention; FIG. 3 is a schematic view of a sound device according to the present invention; fig. 4 is an enlarged view of a portion B shown in fig. 3. 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.
One end of the elastic supporting component 23 is fixed on the basin stand 1, and the other end is supported and fixed on the supporting framework 24.
Please refer to fig. 5-8, wherein fig. 5 is a cross-sectional view taken along line a-a of fig. 1; FIG. 6 is an enlarged view of the portion indicated by C in FIG. 5; FIG. 7 is a schematic view of a three-dimensional structure of the assembly of the support frame and the second auxiliary magnetic steel of the sound device of the present invention; fig. 8 is a schematic structural view of fig. 7 from another view angle. The support frame 24 includes a frame main body 241 having a ring shape and at least two frame connecting portions 242 extending outward from the frame main body 241.
The bobbin main body 241 is annular and located between the diaphragm 21 and the voice coil 22, and the bobbin main body 241 at least connects the bobbin connecting parts 242 two by two, so that the overall stability of the bobbin connecting parts 242 can be enhanced. The bobbin connecting portion 242 is used to elastically suspend the voice coil 22 below the diaphragm 21.
In this embodiment, the frame connecting portions 242 include four frame connecting portions and are respectively disposed at intervals, and every two frame connecting portions 242 are a group and are connected through the frame main body 241. Preferably, the voice coil 22 has a rectangular structure with rounded corners, and the four bobbin connection portions 242 are respectively located at four rounded corners of the voice coil 22. The structure of the multi-skeleton connecting portion 242 can largely avoid the mutual interference between the multi-skeleton connecting portion and the magnetic circuit system 3, that is, the magnetic circuit system 3 can be designed to utilize more sufficient space, and the vibration performance is improved.
In this embodiment, the frame main body 241 is annular, including a continuous ring, which is an integral structure; discontinuous ring shapes are also included, i.e., the skeleton body 241 may be a plurality of segments of spaced ring shapes. The purpose of this is primarily to connect at least two of the frame connecting portions 242.
Specifically, the frame connecting portion 242 has a top wall 2421 opposite to the diaphragm 21, a bottom wall 2422 opposite to the elastic supporting member 23, and a side wall 2423 connecting the top wall 2421 and the bottom wall 2422. The top wall 2421 is connected to the bottom surface of the diaphragm 21, the side wall 2423 is connected to the side surface of the voice coil 22, and the bottom wall 2422 is connected to the elastic support component 23, so that the voice coil 22 is elastically suspended below the diaphragm 21. Namely, one end of the elastic supporting component 23 is fixed on the basin stand 1, and the other end thereof is supported and fixed on the bottom wall 2422. That is, as shown in fig. 10 and 11, the elastic support members 23 jointly enclose a hollow area 10. The end of the voice coil 22 away from the diaphragm 21 is located in the hollow area 10 and forms a suspension, so that the voice coil 22 can float up and down without design limitation. The magnetic circuit system 3 has a magnetic gap 36, and an end of the voice coil 22 away from the diaphragm 21 is inserted in the magnetic gap 36.
The above structure makes the elastic support member 23 not directly connected to the voice coil 22, but indirectly connected through the support bobbin 24. On one hand, the indirect connection structure realizes effective inhibition of the transverse swing of the voice coil 22 through the elastic support component 23, and improves the reliability and stability of the sound generating device 100, on the other hand, the elastic support component 23 is not directly connected with the voice coil 22, so that the structural design of the voice coil 22 is released, the position of the voice coil 22 can float up and down along the vibration direction of the vibrating diaphragm 21, the height of the voice coil 22 is not limited by the elastic support component 23 any more, and the whole height of the sound generating device 100 can be designed to be lighter and thinner; meanwhile, the structural design of the magnetic circuit system 3 is released, the elastic support assembly 23 is not directly glued with the voice coil 22, the interference between the magnetic circuit system 3 and the elastic support assembly 23 is effectively avoided, the magnetic circuit system 3 does not need to be abducted on the elastic support assembly 23, the magnetic circuit system 3 can realize a maximized structure, and the acoustic performance of the sound production device 100 is effectively improved.
Preferably, the top wall 2421 and the bottom wall 2422 are respectively located at two different sides of the side wall 2423. Two adjacent skeleton connecting portions 242 are spaced from each other and enclose a containing space together, and can be used for placing a magnetic steel structure.
Please refer to fig. 5-6 and fig. 9-10, wherein fig. 9 is a schematic perspective view illustrating an assembly of a voice coil and a support frame of a sound device according to the present invention; fig. 10 is a schematic perspective view of the assembly of the elastic support assembly and the support frame of the sound device of the present invention. The bobbin main body 241 may be connected to the diaphragm 21 or may not be connected to the diaphragm, and the bobbin main body 241 may be connected to the voice coil 22 or may not be connected to the voice coil.
In this embodiment, the bobbin main body 241 is connected to the voice coil 22 and the diaphragm 21, respectively. Specifically, the bobbin main body 241 includes a first main body 2411 connected to the diaphragm 21, a second main body 2412 connected to the voice coil 22, and a third main body 2413 extending from the diaphragm 21 toward the voice coil 22 and connecting the first main body 2411 and the second main body 2412. This structure allows the bobbin main body 241 to form a stepped structure. For example, the first body 2411 and the second body 2412 are respectively connected to the diaphragm 21 and the voice coil 22 by gluing. This structure enhances the indirect connection strength between the voice coil 22 and the diaphragm 21, so that the support frame 24 has better stability.
When the frame connecting part 242 extends from the frame main body 241, specifically, the top wall 2421 is connected to the first main body 2411, that is, the top wall 2421 extends from the first main body 2411, but the invention is not limited thereto, and may also extend from the second main body 2412 or the third main body 2413.
In this embodiment, the mass ratio of the diaphragm 21 to the voice coil 22 is less than 1: 5. Basically, since the voice coil 22 is relatively heavy, if the voice coil 22 is connected to the diaphragm 21 only through the bobbin main body 241, the connection stability may be affected by the fact that the voice coil 22 is too heavy, and therefore, the side wall 2423 provided with the bobbin connecting portion 242 is connected to the side of the voice coil 22 to support the voice coil 22, thereby improving the stability.
In this embodiment, preferably, an orthographic projection of the bobbin main body 241 along the vibration direction of the diaphragm 21 falls on the voice coil 22. This structure the structural design of skeleton main part 241 has effectually solved voice coil 22 with excessive glue influences during the gluing of vibrating diaphragm 21 the vibration space's of vibrating diaphragm 21 problem for voice coil 22 winding displacement is more concentrated, and acoustic performance is more excellent.
It should be noted that, an orthographic projection of the bobbin main body 241 along the vibration direction of the diaphragm 21 falls on the voice coil 22, and the bobbin main body 241 and the voice coil 22 are at least partially overlapped. The range of the bobbin body 241 is larger than the range of the voice coil 22, that is, the range extends beyond the voice coil 22, and the range of the bobbin body 241 is smaller than the range of the voice coil 22; of course, the two ranges may be equal. Preferably, the range of the bobbin body 241 is smaller than the range of the voice coil 22.
In the present embodiment, the frame main body 241 and the frame connecting portion 242 are integrally formed. Preferably, the frame main body 241 and the frame connecting portion 242 are made of metal materials, and are integrally formed through a stamping process. Of course, the frame main body 241 and the frame connecting portion 242 may be separate structures.
The structure makes the supporting framework 24 an integral structure, on one hand, the lateral swing of the voice coil 22 can be effectively inhibited under the working state of the sound production device 100, and the stability is improved; on the other hand, the elastic support assembly 23 is not directly glued with the voice coil 22 through the bobbin connecting portion 242, so that the interference between the magnetic circuit system 3 and the elastic support assembly 23 is effectively avoided, the magnetic circuit system 3 can be maximized, and the acoustic performance of the sound generating device 100 is greatly improved.
Referring to fig. 11-13, fig. 11 is a schematic perspective view of an elastic support assembly of a sound device according to the present invention; FIG. 12 is an exploded perspective view of the resilient support assembly of the sound device of the present invention; fig. 13 is a schematic view of the assembly of the elastic support component and the second auxiliary magnetic steel of the sound production device of the present invention. The number of the elastic supporting components 23 may correspond to the number of the skeleton connecting portions 242, or may be one, and the elastic supporting component 23 supports a plurality of the skeleton connecting portions 242. In this embodiment, the elastic supporting members 23 include two and are respectively located at two opposite sides of the voice coil 22. Preferably, the two elastic support members 23 are respectively located on two opposite sides of the short axis of the voice coil 22.
As shown in fig. 6, each of the elastic supporting assemblies 23 includes an elastic member 231 and an auxiliary diaphragm 232 attached to the elastic member 231. The skeleton connecting portion 242 is fixed to a side of the elastic member 231 away from the auxiliary diaphragm 232.
Specifically, as shown in fig. 10, the elastic member 231 includes a first fixing arm 2311 fixed to the frame 1, two second fixing arms 2312 respectively supported and fixed to two adjacent frame connecting portions 242, 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.
In this embodiment, the elastic member 231 is a flexible printed circuit board, and the voice coil 22 is electrically connected to the elastic member 231. On one hand, the voice coil 22 is supported, and on the other hand, external electric signals are introduced into the voice coil 22, so that the problem that the wires are easily broken when the external electric signals are introduced into the voice coil 22 through a lead is solved, and the reliability of the voice coil is improved.
The auxiliary diaphragm 232 includes a corrugated ring 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 ring 2321, where the first connection portion 2322 is fixed to one side of the first fixing arm 2311 away from the support frame 24, and the second connection portion 2323 is fixed to one side of the second fixing arm 2312 away from the support frame 24, so that the corrugated ring 2321 and the elastic arm 2313 are disposed opposite to each other.
And the bottom wall 2422 of the frame connecting part 242 is supported on the second fixing arm 2312, so as to form the connection between the support frame 24 and the elastic support component 23. That is, the bottom wall 2422 is connected to the elastic member 231.
In addition, the bottom wall 2422 of the frame connecting part 242 may also be connected to the second connecting part 2323, that is, the bottom wall 2422 is connected to the auxiliary diaphragm 232. Alternatively, the bottom wall 2422 of the frame connecting portion 242 is sandwiched and fixed between the second fixing arm 2312 and the second connecting portion 2323, that is, the bottom wall 2422 is fixed between the elastic member 231 and the auxiliary diaphragm 232. These fixing means are possible.
Because the bobbin connecting portions 242 are located at four rounded corners of the voice coil 22, and the elastic support assembly 23 includes two elastic support assemblies respectively located at two opposite sides of the voice coil 22, at this time, two sides of the long axis of the voice coil 22 can be fully used for designing a magnetic steel structure, so as to increase the volume of the magnetic circuit system 3 to improve the magnetic field performance thereof.
Specifically, as shown in fig. 2 to 4, the magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32 fixed to the magnetic yoke 31, and two first auxiliary magnetic steels 33 respectively disposed at two opposite sides of the main magnetic steel 32 at intervals and forming the magnetic gap 36 with the main magnetic steel 32. Each first secondary magnetic steel 33 is located between two adjacent elastic support assemblies 23.
For example, the voice coil 22 has a rectangular structure with rounded corners, the two first secondary magnetic steels 33 are located on two sides of the long axis of the voice coil 22, and the two elastic support assemblies 23 are located on two sides of the short axis of the voice coil 22. At this time, the magnetic circuit system 3 forms a magnetic circuit structure of three magnetic steels. The driving performance of the magnetic circuit is stronger than that of a single magnetic steel magnetic circuit structure.
It should be noted that, it is also possible that the two first secondary magnetic steels 33 are respectively located at the same positions as the two elastic support assemblies 23, and are both located at both sides of the short axis of the voice coil 22. In order to further effectively utilize the space and enhance the volume of the magnetic circuit system 3, in the present embodiment, the magnetic circuit system 3 further includes two second secondary magnetic steels 34 respectively disposed at two opposite sides of the main magnetic steel 32 at intervals. That is, the two first sub-magnetic steels 33 and the two second sub-magnetic steels 34 are respectively located on both sides of the long axis and both sides of the short axis of the voice coil 22, or respectively located on both sides of the short axis and both sides of the long axis of the voice coil 22, thereby forming a five-magnetic-steel magnetic circuit structure.
In this embodiment, when the magnetic circuit structure is a five-magnetic-steel magnetic circuit structure, the voice coil 22 is a rectangular structure with rounded corners, two of the first secondary magnetic steels 33 are respectively located on two sides of the long axis of the voice coil 22, two of the second secondary magnetic steels 34 are located on two sides of the short axis of the voice coil 22, two of the elastic supporting assemblies 23 are respectively located on two sides of the short axis of the voice coil 22, and each of the second secondary magnetic steels 34 is located on the same side of the second secondary magnetic steels between the elastic supporting assembly 23 and the voice coil 22, specifically located on the same side of the second fixing arm 2312 of the elastic supporting assembly 23, that is, two adjacent fixing arms are located in the accommodating space surrounded by the skeleton connecting. At this time, the magnetic circuit system 3 forms a magnetic circuit structure of five magnetic steels, and the driving performance is stronger, so that the vibration effect of the sound generating device 100 is better.
It should be noted that, the secondary magnetic steel 34 needs to avoid interfering with the elastic supporting component 23 and the supporting framework 24 in order to make the best of the space, in this embodiment, the secondary magnetic steel 34 includes a magnetic steel body 341 and a magnetic steel reinforcing part 342 formed by extending two ends of the magnetic steel body 341 respectively, and each magnetic steel reinforcing part 342 extends to one respectively between the framework connecting part 242 and the voice coil 22.
In addition, as shown in fig. 12 and 13, the auxiliary diaphragm 232 is provided with a yielding groove 2324 which is recessed from a side thereof close to the voice coil 22 toward the basin frame 1, and the magnetic steel body 341 extends into the yielding groove 2324. The same is to make the volume of the second secondary magnetic steel 34 as large as possible to improve the vibration performance.
Of course, when the magnetic circuit system 3 is a three-magnet steel magnetic circuit structure, the two secondary magnets included therein may also be the structures of two second secondary magnets 34 in the five-magnet steel magnetic circuit structure.
In order to make the magnetic lines of force of the magnetic circuit system 3 cut by the voice coil 22 as much as possible to form a larger driving force, the magnetic circuit system 3 further includes an upper clamp plate 35, the upper clamp plate 35 includes a ring-shaped fixing ring 351 fixed to the frame 1 and four pole cores 352 respectively extending from the fixing ring 351 to the two first secondary magnetic steels 33 and the two second secondary magnetic steels 34, and the four pole cores 352 are respectively stacked on the two first secondary magnetic steels 33 and the two second secondary magnetic steels 34. And the pole core 352 is respectively matched with the shape of the corresponding first secondary magnetic steel 33 or the second secondary magnetic steel 34. When the magnetic circuit system 3 is a three-magnetic steel magnetic circuit structure, there are two pole cores 352.
Compared with the prior art, in the sound production device, the voice coil and the vibrating diaphragm as well as the voice coil and the elastic support assembly are arranged at intervals, the support framework which comprises the annular framework main body and at least two framework connecting parts extending outwards from the framework main body is arranged, so that the framework main body is positioned between the vibrating diaphragm and the voice coil, the framework connecting parts are used for elastically suspending the voice coil below the vibrating diaphragm, the top wall of the framework connecting part is connected with the bottom surface of the vibrating diaphragm, the side wall of the framework connecting part is connected with the side surface of the voice coil, and the bottom wall of the framework connecting part is connected with the elastic support assembly. The structure enables the elastic support component to be connected with the voice coil through the support framework, so that on one hand, the transverse swing of the voice coil during vibration is restrained, and the stability of the voice coil is improved; on the other hand, the limitation of the elastic support component on the voice coil when the elastic support component is directly connected with the voice coil is eliminated, the height of the voice coil is not limited by the elastic support component any more, and the overall height of the sound production device can be designed to be thinner and lighter; meanwhile, the design limitation on the magnetic circuit system is eliminated, the elastic support component is not directly glued with the voice coil, the magnetic circuit system does not need to be abducted, the magnetic circuit system can realize a maximized multi-magnetic steel three-magnetic circuit or five-magnetic circuit structure, and the acoustic performance of the sound production device is effectively improved.
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 (24)
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 and driving the vibrating diaphragm to vibrate and sound, and an elastic supporting assembly fixed on the basin frame and opposite to the vibrating diaphragm and arranged at intervals, and is characterized by further comprising a supporting framework, wherein the supporting framework comprises an annular framework main body and at least two framework connecting parts extending outwards from the framework main body; the framework main body is positioned between the vibrating diaphragm and the voice coil, and the framework connecting part is used for elastically suspending the voice coil below the vibrating diaphragm; the framework connecting part is provided with a top wall opposite to the vibrating diaphragm, a bottom wall opposite to the elastic supporting component and a side wall connected with the top wall and the bottom wall, the top wall is connected with the vibrating diaphragm, the side wall is connected with the side face of the voice coil, and the bottom wall is connected with the elastic supporting component.
2. The sounding device according to claim 1, wherein the resilient support members collectively 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 1, wherein the top wall and the bottom wall are located on different sides of the side wall.
4. The sound production device as claimed in claim 1, wherein two adjacent frame connecting portions are spaced from each other and together enclose a receiving space.
5. The sounding device of claim 1, wherein the bobbin body comprises a first body coupled to the diaphragm, a second body coupled to the voice coil, and a third body extending from the diaphragm in a direction of the voice coil and coupling the first body and the second body.
6. The sounding device according to claim 5, wherein an orthographic projection of the skeleton body along the vibration direction of the diaphragm falls on the voice coil.
7. The sounder device according to claim 1, wherein the frame body and the frame connecting portion are of an integrally formed structure.
8. The sounding device according to claim 7, wherein the frame main body and the frame connecting portion are made of metal material and are integrally formed by a stamping process.
9. The sounder device according to claim 1, wherein the frame body and the frame connecting portion are of a split structure.
10. The sounding device according to claim 1, wherein the skeleton connecting portions comprise four and are respectively arranged at intervals, and every two skeleton connecting portions are in a group and are connected through the skeleton main body.
11. The sounding device according to claim 10, wherein the voice coil is a rectangular structure with rounded corners, and the four bobbin connection portions are respectively located at four rounded corners of the voice coil.
12. The sounding device according to claim 1, 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 framework connecting part is fixed on one side of the elastic part, which is far away from the auxiliary diaphragm.
13. The sounder device according to claim 12, wherein the resilient member comprises a first fixing arm fixed to the frame, two second fixing arms respectively supported and fixed to two adjacent frame connecting portions, and two elastic arms respectively extending from the first fixing arm to the two second fixing arms and forming a fixed connection; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section, and a first connecting part and a second connecting part which respectively extend from two opposite sides of the folding ring, wherein the first connecting part is fixed on one side of the first fixing arm far away from the support framework, and the second connecting part is fixed on one side of the second fixing arm far away from the support framework, so that the folding ring and the elastic arm are oppositely arranged; the bottom wall is supported by the second fixing arm.
14. The sounder device according to claim 12, wherein the resilient member comprises a first fixing arm fixed to the frame, two second fixing arms respectively supported and fixed to two adjacent frame connecting portions, and two elastic arms respectively extending from the first fixing arm to the two second fixing arms and forming a fixed connection; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section, and a first connecting part and a second connecting part which respectively extend from two opposite sides of the folding ring, wherein the first connecting part is fixed on one side of the first fixing arm far away from the support framework, and the second connecting part is fixed on one side of the second fixing arm far away from the support framework, so that the folding ring and the elastic arm are oppositely arranged; the bottom wall is connected to the second connecting portion.
15. The sounder device according to claim 12, wherein the resilient member comprises a first fixing arm fixed to the frame, two second fixing arms respectively supported and fixed to two adjacent frame connecting portions, and two elastic arms respectively extending from the first fixing arm to the two second fixing arms and forming a fixed connection; the auxiliary vibrating diaphragm comprises a folding ring with an arc-shaped cross section, and a first connecting part and a second connecting part which respectively extend from two opposite sides of the folding ring, wherein the first connecting part is fixed on one side of the first fixing arm far away from the support framework, and the second connecting part is fixed on one side of the second fixing arm far away from the support framework, so that the folding ring and the elastic arm are oppositely arranged; the bottom wall is clamped and fixed between the second fixing arm and the second connecting portion.
16. The sounder device according to claim 12, wherein the spring is a flexible circuit board, and the voice coil is electrically connected to the spring.
17. The sound production device as claimed in any one of claims 13 to 15, wherein the magnetic circuit system comprises a magnetic yoke, a main magnetic steel fixed to the magnetic yoke, and two first secondary magnetic steels spaced apart from each other on opposite sides of the main magnetic steel and forming the magnetic gap with the main magnetic steel, each of the first secondary magnetic steels being located between two of the elastic support members.
18. The sounding device according to claim 17, wherein the voice coil is a rectangular structure with rounded corners, the two first secondary magnetic steels are located on two sides of a long axis of the voice coil, and the two elastic supporting components are located on two sides of a short axis 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 primary steel.
20. The device of claim 19, wherein said voice coil is a rectangular structure with rounded corners, two of said first secondary magnetic steels are located on both sides of the long axis of said voice coil, two of said elastic support members are located on both sides of the short axis of said voice coil, two of said second secondary magnetic steels are located on both sides of the short axis of said voice coil, and each of said second secondary magnetic steels is located between two of said second fixed arms of said elastic support member.
21. The sounding device according to claim 20, wherein the second secondary magnetic steel comprises a magnetic steel body and magnetic steel reinforcements respectively extending from two ends of the magnetic steel body, and each of the magnetic steel reinforcements respectively extends between one of the bobbin connecting portion and the voice coil.
22. The sounding device according to claim 21, wherein the auxiliary diaphragm is provided with a recess recessed from a side thereof close to the voice coil toward the frame, and the magnetic steel body extends into the recess.
23. The sounder device according to claim 22, wherein the magnetic circuit system further comprises a top plate, the top plate comprises a ring-shaped fixing ring fixed to the frame and four pole cores extending from the fixing ring to the first and second secondary magnetic steels, the four pole cores are respectively stacked on the first and second secondary magnetic steels, and the pole cores are respectively matched with the corresponding first or second secondary magnetic steels in shape.
24. The sounding device according to claim 1, wherein the mass specific gravity of the diaphragm and the voice coil is less than 1: 5.
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| CN201811161241.9A CN109348370B (en) | 2018-09-30 | 2018-09-30 | Sound production device |
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| CN201811161241.9A CN109348370B (en) | 2018-09-30 | 2018-09-30 | Sound production device |
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| CN109348370B true CN109348370B (en) | 2020-12-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862477B (en) * | 2018-12-29 | 2021-05-14 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN110058041A (en) * | 2019-04-08 | 2019-07-26 | 瑞声科技(新加坡)有限公司 | Gyroscope |
| WO2020227956A1 (en) * | 2019-05-10 | 2020-11-19 | 瑞声声学科技(深圳)有限公司 | Magnetic circuit system and a loudspeaker using same |
| CN111093138B (en) * | 2019-12-13 | 2021-10-19 | 瑞声科技(新加坡)有限公司 | Sound production device |
| WO2021114278A1 (en) * | 2019-12-13 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN111131979B (en) * | 2019-12-13 | 2021-09-10 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111083610A (en) * | 2019-12-13 | 2020-04-28 | 瑞声科技(新加坡)有限公司 | Sound production device |
| WO2021127925A1 (en) * | 2019-12-23 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2021128336A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN111405425B (en) * | 2019-12-27 | 2021-03-26 | 瑞声科技(新加坡)有限公司 | Sound production device |
| WO2021128331A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| CN113079444A (en) * | 2020-01-06 | 2021-07-06 | 歌尔股份有限公司 | Vibration assembly and sound production device |
| CN111641904B (en) * | 2020-05-28 | 2021-10-19 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111935615A (en) * | 2020-06-30 | 2020-11-13 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device and electronic equipment with same |
| CN212812016U (en) * | 2020-07-06 | 2021-03-26 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN112312247A (en) * | 2020-11-30 | 2021-02-02 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN218416652U (en) * | 2022-08-12 | 2023-01-31 | 瑞声光电科技(常州)有限公司 | Sound production device |
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| CN204795580U (en) * | 2015-07-14 | 2015-11-18 | 山东共达电声股份有限公司 | Electronic equipment and speaker thereof |
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| US20040188175A1 (en) * | 1998-11-30 | 2004-09-30 | Sahyoun Joseph Yaacoub | Audio speaker with wobble free voice coil movement |
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| CN1698397A (en) * | 2003-03-31 | 2005-11-16 | 松下电器产业株式会社 | Speaker |
| CN204795580U (en) * | 2015-07-14 | 2015-11-18 | 山东共达电声股份有限公司 | Electronic equipment and speaker thereof |
| CN208924475U (en) * | 2018-09-30 | 2019-05-31 | 瑞声科技(新加坡)有限公司 | Microphone device |
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