CN111935618B - Loudspeaker - Google Patents

Loudspeaker Download PDF

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Publication number
CN111935618B
CN111935618B CN202010898648.0A CN202010898648A CN111935618B CN 111935618 B CN111935618 B CN 111935618B CN 202010898648 A CN202010898648 A CN 202010898648A CN 111935618 B CN111935618 B CN 111935618B
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CN
China
Prior art keywords
voice coil
magnetic
loudspeaker
vibration
ring
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Active
Application number
CN202010898648.0A
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Chinese (zh)
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CN111935618A (en
Inventor
王兴龙
刘琦琦
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Goertek Inc
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Goertek Inc
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Priority to CN202010898648.0A priority Critical patent/CN111935618B/en
Publication of CN111935618A publication Critical patent/CN111935618A/en
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Publication of CN111935618B publication Critical patent/CN111935618B/en
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Classifications

    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • 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 discloses a loudspeaker, which comprises a shell, a vibration system, a magnetic circuit system and an elastic supporting piece, wherein the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, and the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure which are arranged above the magnetic yoke; the elastic supporting piece is connected with the vibration system and is arranged opposite to the vibrating diaphragm up and down to form elastic support for the vibration system; the gap is arranged between the shell and the side magnetic structure, the framework is arranged between the vibrating diaphragm and the elastic support piece, the framework comprises a side wall connected between the vibrating diaphragm and the elastic support piece and a top wall connected above the side wall, the top wall is connected with the vibrating diaphragm, the side wall is located in the gap, the elastic support piece is provided with a bonding pad connected with an external circuit, and a voice coil wire of the voice coil is guided to be connected with the bonding pad along the top wall and the side wall so as to enable the voice coil wire to bypass the side magnetic structure. In the process of routing the voice coil wire, the side magnetic circuit structure is bypassed in the whole process, the side magnetic circuit structure is not required to be broken, and the acoustic performance of the product is improved.

Description

Loudspeaker
Technical Field
The invention relates to the technical field of acoustic devices, in particular to a loudspeaker.
Background
A speaker is a transducer for converting an electrical signal into an acoustic signal, and is widely used in electronic products such as mobile phones, computers, earphones, and the like. The micro-speaker generally comprises a vibration system, a magnetic circuit system and a support system, wherein the vibration system comprises an upper vibration system and a lower vibration system, the upper vibration system comprises a voice coil and a vibrating diaphragm, the lower vibration system comprises an elastic support member, and the upper vibration system and the lower vibration system are respectively arranged at the upper part and the lower part of a product structure. Due to the structural characteristics of the loudspeaker space, the voice coil wire of the voice coil in the loudspeaker and an external circuit need to be broken in the corresponding area of the magnetic circuit system in the conducting process so as to avoid the voice coil wire of the voice coil, and the broken magnetic circuit system can influence the acoustic performance of a product.
Disclosure of Invention
The invention mainly aims to provide a loudspeaker, and aims to solve the problem that in the prior art, the acoustic performance of a product is affected because the voice coil wire of a voice coil in the loudspeaker and an external circuit are usually required to be designed in a breaking way in a corresponding area of a magnetic circuit system in the conducting process.
In order to achieve the above object, the present invention provides a speaker, which includes a housing, a vibration system, a magnetic circuit system, and an elastic supporting member, wherein the vibration system includes a diaphragm and a voice coil for driving the diaphragm to vibrate, and the magnetic circuit system includes a magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure, which are disposed above the magnetic yoke; the elastic supporting piece is connected with the vibration system and is arranged opposite to the vibrating diaphragm up and down to form elastic support for the vibration system;
the casing with have the clearance between the limit magnetic structure, the vibrating diaphragm with be provided with the skeleton between the elastic support piece, the skeleton including connect in the vibrating diaphragm with lateral wall between the elastic support piece and connect in the roof of lateral wall top, the roof with the vibrating diaphragm is connected, the lateral wall is located in the clearance, elastic support piece is provided with the pad of being connected with external circuit, the voice coil loudspeaker voice coil's voice coil line is followed the roof and the lateral wall is guided to be connected with the pad, so that the voice coil loudspeaker voice coil line is around opening limit magnetic structure.
Preferably, the top wall is arranged horizontally, the side wall is arranged vertically, the voice coil wire comprises a horizontal section and a vertical section, the horizontal section is connected with the top wall and extends to and is connected with the vertical section along the top wall, and the vertical section is connected with the side wall and extends to and is connected with the pad along the side wall.
Preferably, the horizontal section is adhered to the lower surface of the top wall and the vertical section is adhered to the inner surface of the side wall.
Preferably, the vertical section is far away from one end of the horizontal section and is further provided with an extension section, the extension section is horizontally arranged, and the extension section penetrates through the side wall and is connected with the bonding pad.
Preferably, the voice coil line is divided into a start line and an end line, the start line is connected to the bottom of the voice coil, and the end line is connected to the top of the voice coil; the beginning line and the ending line each have the horizontal segment, the vertical segment, and the extension segment; the starting line is also provided with a transition section, and the transition section extends from the bottom to the top of the voice coil and is connected with one end, far away from the vertical section, of the horizontal section.
Preferably, the transition section is adhered to the outer surface of the voice coil.
Preferably, the transition section, the horizontal section, the vertical section and the extension section are formed by bending the voice coil wire.
Preferably, the start line and the end line are respectively arranged at two opposite sides of the voice coil, or the start line and the end line are arranged at the same side of the voice coil.
Preferably, the elastic support member includes a centering branch piece, the centering branch piece includes an outer fixing portion and an inner supporting portion connected to the inside of the outer fixing portion, the side wall is connected to the inner supporting portion, the outer fixing portion is fixed to the bottom of the housing, and the inner supporting portion is provided with the bonding pad.
Preferably, the outer fixing portion and the inner supporting portion are both rectangular ring structures, and the outer fixing portion and the inner supporting portion are connected in the middle of the long axis direction.
Preferably, the elastic support further comprises a balance diaphragm;
the balance diaphragm comprises a first connecting portion, a first ring folding portion and a second connecting portion, the first ring folding portion and the second connecting portion are sequentially arranged, the first connecting portion is bonded to the bottom of the inner supporting portion, the second connecting portion is bonded to the bottom of the outer fixing portion, and the first ring folding portion corresponds to the gap.
Preferably, the vibrating diaphragm includes central part, second collar portion and edge part that sets gradually from inside to outside, the roof bond in central part, second collar portion corresponds first collar portion sets up, the edge part certainly second collar portion downwardly extending forms and fixes the outside of shell.
Preferably, the central portion includes an inner ring portion formed by extending an inner edge of the second flange portion inward and a reinforcing portion formed by being combined with the inner ring portion, and the top wall is bonded to the inner ring portion and the reinforcing portion.
Preferably, the roof be provided with connecting portion and with the crimping portion that connecting portion are connected, the outward flange of reinforcement portion is formed with the recess, crimping portion inlays to be located in the recess and with the cell wall bonding of recess, connecting portion with interior annular portion bonds.
Preferably, the groove is disposed on an upper surface of the reinforcement portion, and the connection portion is bonded to a lower surface of the inner ring portion.
Preferably, the side magnetic structure is a ring-shaped structure.
Preferably, the side magnetic circuit structure comprises an annular side magnet and an annular side magnetic conduction plate arranged above the annular side magnet;
the edge magnetic conduction plate and the shell are of an integrally formed structure, or the edge magnetic conduction plate and the shell are of a split structure which is connected with each other.
Preferably, the loudspeaker further comprises a magnetic conduction shell, the magnetic conduction shell comprises a substrate and a side plate connected to the substrate, the substrate is connected to the bottom of the magnetic yoke, the side plate is arranged around the periphery of the side magnetic circuit structure and connected with the elastic supporting piece, and the side plate is provided with a sound outlet.
According to the technical scheme, the loudspeaker further comprises a framework, the framework is arranged between the vibrating diaphragm and the elastic supporting piece, and when the voice coil drives the vibrating diaphragm to vibrate, the framework connected with the vibrating diaphragm and the elastic supporting piece vibrate synchronously, so that the anti-deflection performance of a vibration system is effectively improved, and the acoustic performance of a product is further improved. A gap is formed between the shell and the side magnetic structure, the side wall of the framework is located in the gap, vibration is facilitated, and the gap provides a vibration space for the framework. Elastic support piece is provided with the pad, and the voice coil wire of voice coil loudspeaker voice coil is walked the line along the roof earlier, walks the line along the lateral wall again, and then leads to through roof and lateral wall and be connected with the pad, realizes switching on between voice coil loudspeaker voice coil and the external circuit. In addition, the side magnetic circuit structure is bypassed in the whole process of the voice coil wire routing, the side magnetic circuit structure is not required to be avoided, the side magnetic circuit structure is not required to be broken, the magnetic circuit system is not influenced, and the acoustic performance of the product is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a speaker assembly at a viewing angle according to an embodiment of the present invention;
FIG. 2 is a schematic view of a speaker assembly from another perspective according to an embodiment of the present invention;
FIG. 3 is an exploded view of a speaker according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a speaker according to an embodiment of the present invention;
FIG. 5 is an exploded view of a speaker according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a voice coil of a speaker according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a voice coil of a speaker according to another embodiment of the present invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
100 Loudspeaker 331 Edge magnet
10 Outer casing 332 Edge magnetic conduction plate
20 Vibration system 34 Magnetic gap
21 Vibrating diaphragm 40 Elastic support
211 Center part 41 Balance diaphragm
2111 Inner ring part 411 First connecting part
2112 Reinforcing part 412 First hinge part
2113 Groove 413 Second connecting part
212 Second flange part 50 Gap
213 Edge part 60 Framework
22 Voice coil 61 Roof wall
221 Voice coil wire 611 Connecting part
221a Starting line 612 Crimping part
221b End wire 62 Side wall
2211 Transition section 621 Dodging port
2212 Horizontal segment 70 Centering support plate
2213 Vertical section 71 External fixing part
2214 Extension section 72 Inner support part
30 Magnetic circuit system 721 Bonding pad
31 Magnetic yoke 80 Magnetic conduction shell
32 Central magnetic circuit structure 81 Substrate
321 Central magnet 82 Side plate
322 Central magnetic conduction plate 821 Sound outlet
33 Side magnetic circuit structure
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a loudspeaker.
As shown in fig. 1 to 5, the speaker 100 of the present embodiment includes a housing 10, a vibration system 20, a magnetic circuit system 30 and an elastic support member 40, wherein the vibration system 20 includes a diaphragm 21 and a voice coil 22 for driving the diaphragm 21 to vibrate, and the magnetic circuit system 30 includes a magnetic yoke 31, a central magnetic structure 32 and a side magnetic structure 33 disposed above the magnetic yoke 31; the elastic supporting part 40 is connected with the vibration system 20 and is arranged opposite to the vibrating diaphragm 21 up and down for forming elastic support for the vibration system 20; there is a gap 50 between the casing 10 and the side magnetic structure 33, a skeleton 60 is disposed between the diaphragm 21 and the elastic supporting member 40, the skeleton 60 includes a side wall 62 connected between the diaphragm 21 and the elastic supporting member 40 and a top wall 61 connected above the side wall 62, the top wall 61 is connected to the diaphragm 21, the side wall 62 is located in the gap 50, the elastic supporting member 40 is provided with a pad 721 connected to an external circuit, and a voice coil wire 221 of the voice coil 22 is guided along the top wall 61 and the side wall 62 to be connected to the pad 721, so that the voice coil wire 221 bypasses the side magnetic structure 33.
The side magnetic structure 33 of the present embodiment surrounds the periphery of the central magnetic structure 32 and forms a magnetic gap 34, the voice coil 22 is suspended in the magnetic gap 34, the magnetic gap 34 between the side magnetic structure 33 and the central magnetic structure 32 generates a magnetic field, and the voice coil 22 performs a reciprocating magnetic line-cutting motion in the magnetic gap 34 to drive the diaphragm 21 to vibrate, thereby driving the air to sound and completing the energy conversion between the electricity and the sound. The diaphragm 21 is disposed on the top of the housing 10, the elastic supporting member 40 is disposed below the diaphragm 21, and the elastic supporting member 40 is connected to the vibration system 20 and elastically supports the vibration system 20.
The speaker 100 of the present embodiment further includes a frame 60, wherein the frame 60 is disposed between the diaphragm 21 and the elastic support member 40, specifically, a top wall 61 of the frame 60 is connected to the diaphragm 21, and a side wall 62 of the frame 60 is connected to the elastic support member 40. When the voice coil 22 drives the diaphragm 21 to vibrate, the skeleton 60 connected with the diaphragm 21 and the elastic support member 40 vibrate synchronously, so that the anti-polarization performance of the vibration system 20 is effectively improved, and the acoustic performance of the product is further improved. A gap 50 is formed between the casing 10 and the side magnetic structure 33, the side wall 62 of the framework 60 is located in the gap 50 to facilitate vibration, and the gap 50 provides a vibration space for the framework 60. The elastic supporting member 40 is provided with a bonding pad 721, and the voice coil line 221 of the voice coil 22 is routed along the top wall 61 and then along the side wall 62, and is guided to be connected with the bonding pad 721 through the top wall 61 and the side wall 62, so as to achieve the conduction between the voice coil 22 and the external circuit. In addition, in the process of routing the voice coil wire 221, the side magnetic structure 33 is bypassed in the whole course, the avoidance design of the side magnetic structure 33 is not needed, the side magnetic structure 33 is not needed to be broken, the magnetic circuit system 30 is not affected, and the acoustic performance of the product is improved.
Specifically, top wall 61 is disposed horizontally, side wall 62 is disposed vertically, voice coil wire 221 includes a horizontal segment 2212 and a vertical segment 2213, horizontal segment 2212 is connected to top wall 61 and extends along top wall 61 to be connected to vertical segment 2213, and vertical segment 2213 is connected to side wall 62 and extends along side wall 62 to be connected to pad 721. As shown in fig. 4, the horizontal segment 2212 extends from inside to outside along the top wall 61, the vertical segment 2213 extends from top to bottom along the vertical segment 2213, and the vertical segment 2213 is connected to the bonding pad 721 to realize conduction between the voice coil 22 and an external circuit. Horizontal section 2212 and vertical section 2213 in voice coil line 221 of this embodiment are respectively along roof 61 and lateral wall 62 line, form three-dimensional in the same direction as the line structure, and automatic in the same direction as the line is realized to accessible winding equipment, and the technology degree of difficulty is low, does benefit to large-scale application. And the horizontal segment 2212 and the vertical segment 2213 are respectively connected with the top wall 61 and the side wall 62, so that the reliability of wiring is improved.
Further, the horizontal segment 2212 is bonded to the lower surface of the top wall 61, and the vertical segment 2213 is bonded to the inner surface of the side wall 62. As shown in fig. 4, the upper surface of the top wall 61 is bonded to the diaphragm 21, the horizontal section 2212 is bonded to the lower surface of the top wall 61, the outer surface of the side wall 62 faces the gap 50, and the vertical section 2213 is bonded to the inner surface of the side wall 62.
Furthermore, an end of the vertical segment 2213 away from the horizontal segment 2212 is further provided with an extension segment 2214, the extension segment 2214 is horizontally arranged, and the extension segment 2214 penetrates through the side wall 62 and is connected with the pad 721. As shown in fig. 4, an end of the horizontal segment 2212, which is far away from the vertical segment 2213, is a lower end of the vertical segment 2213, the lower end of the vertical segment 2213 is provided with an extension segment 2214, the extension segment 2214 is horizontally arranged, and the extension segment 2214 penetrates through the side wall 62 and is connected with the pad 721, and it can be understood that the side wall 62 is provided with an avoiding opening 621 through which the extension segment 2214 penetrates, corresponding to the position of the extension segment 2214. The extension 2214 of the voice coil wire 221 is designed to improve the convenience of connection between the voice coil wire 221 and the pad 721.
The voice coil line 221 of the present embodiment is divided into a start line 221a and a last line 221b, the start line 221a is connected to the bottom of the voice coil 22, and the last line 221b is connected to the top of the voice coil 22; the beginning line 221a and the end line 221b each have a horizontal segment 2212, a vertical segment 2213, and an extension segment 2214; the starting line 221a further has a transition 2211, and the transition 2211 extends from the bottom to the top of the voice coil 22 and is connected to the end of the horizontal segment 2212 away from the vertical segment 2213.
The top of voice coil 22 is bonded to diaphragm 21, and the bottom of voice coil 22 extends downward into magnetic gap 34. The voice coil 22 is a ring-shaped structure formed by winding the voice coil wire 221, the initial winding of the voice coil wire 221 is a starting wire 221a, the winding of the final winding of the voice coil wire 221 is a final wire 221b of the voice coil wire 221, wherein the final wire 221b is led out from the top of the voice coil 22, the top of the voice coil 22 is substantially flush with the top wall 61 of the bobbin 60, the final wire 221b is directly routed along the top wall 61 and the side wall 62, the starting wire 221a is led out from the bottom of the voice coil 22, because there is a height difference between the bottom of the voice coil 22 and the top wall 61 of the bobbin 60, the starting wire 221a further has a transition section 2211, the transition section 2211 extends from the bottom to the top of the voice coil 22, namely from bottom to top, so as to compensate the height difference between the bottom of the voice coil 22 and the top wall 61 of the bobbin 60, and the transition section 2211 is connected with one end of the horizontal section 2212 far from the vertical section 2213. Further, the transition section 2211 is adhered to the outer surface of the voice coil 22, and is reasonable in design and convenient to connect with the horizontal section 2212.
Further, the transition segment 2211, the horizontal segment 2212, the vertical segment 2213 and the extension segment 2214 are formed by bending the voice coil wire 221. The voice coil wire 221 is a complete wire, and in order to match the structure of the framework 60, the transition section 2211, the horizontal section 2212, the vertical section 2213 and the extension section 2214 are formed after multiple bending, so that the bending process is low in difficulty and is beneficial to large-scale application.
As shown in fig. 6, in one embodiment, the start line 221a and the end line 221b are respectively disposed on two opposite sides of the voice coil 22, specifically, the voice coil 22 has a rectangular ring structure, and the start line 221a and the end line 221b are respectively disposed on two short axis sides of the voice coil 22, so as to improve flexibility of winding. As shown in fig. 7, in another embodiment, the start line 221a and the end line 221b are located on the same side of the voice coil 22, specifically, the start line 221a and the end line 221b are both located on a short axis side of the voice coil 22, and the performance is more stable when the start line 221a and the end line 221b are located on the same side.
As shown in fig. 2 to 5, in the present embodiment, the elastic supporting member 40 includes a centering branch piece 70, the centering branch piece 70 includes an outer fixing portion 71 and an inner supporting portion 72 connected to the inside of the outer fixing portion 71, the side wall 62 is connected to the inner supporting portion 72, the outer fixing portion 71 is fixed to the bottom of the housing 10, and the inner supporting portion 72 is provided with a pad 721.
The side wall 62 of the frame 60 is connected to the inner support portion 72 of the centering leg 70, and the inner support portion 72 is elastically deformed in the vibration process of the frame 60 to vibrate in synchronization with the frame 60. The upper pad 721 of the inner support 72 is connected to the voice coil wire 221, and is electrically connected to an external circuit. The centering support sheet 70 can also perform a centering function on the vibration system 20, inhibit the vibration system 20 from polarizing, and improve the acoustic performance of the product. Further, the outer fixing portion 71 and the inner supporting portion 72 are both rectangular ring structures, and the outer fixing portion 71 and the inner supporting portion 72 are connected in the middle of the long axis direction, so that the structural design is reasonable, and the vibration of the vibration system 20 is not hindered while the centering effect is met.
In this embodiment, the elastic supporting member 40 further includes a balance diaphragm 41, the balance diaphragm 41 includes a first connecting portion 411, a first collar portion 412 and a second connecting portion 413, which are sequentially disposed, the first connecting portion 411 is bonded to the bottom of the inner supporting portion 72, and the second connecting portion 413 is bonded to the bottom of the outer fixing portion 71, so as to achieve the assembly of the balance diaphragm 41, the framework 60 and the centering chip 70. When the loudspeaker 100 works, the vibrating diaphragm 21, the framework 60 and the balance vibrating diaphragm 41 synchronously vibrate, and the balance vibrating diaphragm 41 plays a role in assisting and strengthening the vibration of the vibrating diaphragm 21, so that the anti-polarization performance of the vibration system 20 is effectively improved, and the acoustic performance of the product is further improved. The first hinge portion 412 is disposed corresponding to the gap 50, and the gap 50 provides a vibration space for the first hinge portion 412.
In this embodiment, the diaphragm 21 includes a central portion 211, a second flange portion 212, and an edge portion 213, which are sequentially disposed from inside to outside, the top wall 61 is adhered to the central portion 211, the second flange portion 212 is disposed corresponding to the first flange portion 412, and the edge portion 213 extends downward from the second flange portion 212 and is formed and fixed on the outside of the housing 10. Further, the central portion 211 includes an inner ring portion 2111 formed by extending inward from an inner edge of the second flange portion 212 and a reinforcing portion 2112 combined with the inner ring portion 2111, and the top wall 61 is bonded to the inner ring portion 2111 and the reinforcing portion 2112, that is, the top wall 61 of the framework 60 is connected to both the inner ring portion 2111 and the reinforcing portion 2112.
The top wall 61 of the framework 60 is simultaneously bonded with the inner ring portion 2111 and the reinforcing portion 2112, so that the assembly reliability is improved, the side wall 62 is bonded with the first connecting portion 411 of the balanced diaphragm 41, the second connecting portion 413 of the balanced diaphragm 41 is bonded with the bottom of the outer fixing portion 71, the voice coil 22 is bonded with the bottom of the reinforcing portion 2112 in the diaphragm 21, the edge portion 213 of the diaphragm 21 is of a flanging structure, the second connecting portion 212 extends downwards from the outer side and is fixed on the outer side of the shell 10, and the assembly among the diaphragm 21, the shell 10, the voice coil 22, the framework 60, the centering disk 70 and the balanced diaphragm 41 is realized. The voice coil 22 drives the elastic portions of the diaphragm 21, the balance diaphragm 41, the bobbin 60, and the centering stem 70 to vibrate synchronously. The first flange part 412 of the diaphragm 21 and the second flange part 212 of the balanced diaphragm 41 are correspondingly arranged, and the first flange part 412 and the second flange part 212 can form symmetrical support, so that symmetrical restoring force can be provided when the voice coil 22 vibrates, the distortion of a product is reduced, and the reliability is improved.
Further, the top wall 61 of the present embodiment is provided with a connecting portion 611 and a pressing portion 612 connected to the connecting portion 611, a groove 2113 is formed at the outer edge of the reinforcing portion 2112, the pressing portion 612 is embedded in the groove 2113 and bonded to the groove wall of the groove 2113, and the connecting portion 611 is bonded to the inner ring portion 2111. The recess 2113 is provided on the upper surface of the reinforcement portion 2112, and the connection portion 611 is bonded to the lower surface of the inner ring portion 2111. Specifically, the opening of the groove 2113 faces upward, the shape of the groove 2113 is matched with the shape of the edge pressing portion 612, the nesting design with the edge pressing portion 612 is facilitated, the edge pressing portion 612 of the top wall 61 in the framework 60 is located above the reinforcing portion 2112, the edge pressing portion 612 is embedded in the groove 2113 and is bonded with the groove wall of the groove 2113, meanwhile, the connecting portion 611 of the top wall 61 in the framework 60 is bonded to the lower surface of the inner ring portion 2111, and the firmness of assembly of the diaphragm 21 and the framework 60 is improved.
In this embodiment, the side magnetic structure 33 is an annular structure, the side magnetic structure 33 of the annular structure surrounds the periphery of the central magnetic structure 32, and an annular magnetic gap 34 is formed between the side magnetic structure 33 and the central magnetic structure 32, matching with the shape of the voice coil 22, so as to improve the vibration stability of the voice coil 22.
Specifically, the central magnetic structure 32 includes a central magnet 321 and a central magnetic conductive plate 322 disposed above the central magnet 321, and the central magnetic conductive plate 322 can modify the magnetic force emitted from the central magnet 321. The magnetic structure 33 includes a ring-shaped edge magnet 331 and a ring-shaped edge magnetic plate 332 disposed above the ring-shaped edge magnet 331, wherein the ring-shaped edge magnetic plate 332 can modify the magnetic force generated by the ring-shaped edge magnet 331. The side magnetic conductive plate 332 and the casing 10 are integrally formed, or the side magnetic conductive plate 332 and the casing 10 are connected to each other in a split structure. As shown in fig. 3 and 5, the side magnetic plate 332 of the present embodiment and the casing 10 are integrally formed, so that the structure is compact, the assembling process and the assembling gap are omitted, and the assembling error is avoided. In other embodiments, the side magnetic plate 332 and the casing 10 are connected to each other in a split structure, so that the manufacturing is convenient and the assembly manner is flexible.
In this embodiment, the speaker 100 further includes a magnetic conductive housing 80, the magnetic conductive housing 80 includes a substrate 81 and a side plate 82 connected to the substrate 81, the substrate 81 is connected to the bottom of the magnetic yoke 31, the side plate 82 surrounds the periphery of the side magnetic structure 33 and is connected to the elastic support 40, and the side plate 82 is provided with a sound outlet 821.
In the magnetic conductive case 80 of the present embodiment, the side plates 82 and the base plate 81 form a case-shaped magnetic conductive case 80, and the case 10 and the magnetic conductive case 80 are arranged vertically opposite to each other to enclose a case structure for accommodating the vibration system 20 and the magnetic circuit system 30. The base plate 81 of the magnetic conductive case 80 is attached to the bottom of the yoke 31, the bottom end of the side plate 82 is attached to the base plate 81, the top end of the side plate 82 is attached to the housing 10, and the sound outlet 821 of the side plate 82 realizes normal sound emission of the speaker 100. The side plate 82 surrounds the periphery of the side magnetic structure 33 and is connected with the shell 10 through the outer fixing portion 71 of the elastic supporting piece 40, so that the side plate is matched with the shell 10 to wrap the magnetic circuit system 30, internal components of the side plate are protected, a shielding effect can be achieved, the magnetic leakage quantity is reduced, the acoustic performance of a product is improved, peripheral devices of the loudspeaker 100 are not affected when the loudspeaker is used for a complete machine, and the performance of the complete machine is optimized.
The casing 10 of the present embodiment is a metal casing 10, and the edge magnetic plate 332 and/or the surface of the casing 10 are covered with an insulating material layer. The insulating material layer has insulation, so that short circuit among the shell 10, the side magnet 331, the voice coil wire 221 and the pad 721 is prevented, and the use safety of the product is ensured.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (12)

1. A loudspeaker comprises a shell, a vibration system, a magnetic circuit system and an elastic supporting piece, wherein the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, and the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit structure and a side magnetic circuit structure which are arranged above the magnetic yoke; the elastic supporting piece is connected with the vibration system and is arranged opposite to the vibrating diaphragm up and down to form elastic support for the vibration system; it is characterized in that the preparation method is characterized in that,
the casing with have the clearance between the limit magnetic structure, the vibrating diaphragm with be provided with the skeleton between the elastic support piece, the skeleton including connect in the vibrating diaphragm with lateral wall between the elastic support piece and connect in the roof of lateral wall top, the roof with the vibrating diaphragm is connected, the lateral wall is located in the clearance, elastic support piece is provided with the pad of being connected with external circuit, the voice coil loudspeaker voice coil's voice coil line is followed the roof and the lateral wall is guided to be connected with the pad, so that the voice coil loudspeaker voice coil line is around opening limit magnetic structure.
2. The loudspeaker of claim 1 wherein said top wall is horizontally disposed, said side walls are vertically disposed, and said voice coil wire includes a horizontal section connected to said top wall and extending along said top wall to connect to said vertical section, and a vertical section connected to said side walls and extending along said side walls to connect to said solder pad.
3. The loudspeaker of claim 2, wherein an extension section is further disposed at an end of the vertical section away from the horizontal section, the extension section is disposed horizontally, and the extension section penetrates through the sidewall and is connected to the pad.
4. A loudspeaker according to claim 3, wherein the voice coil wire is divided into a start wire and an end wire, the start wire being connected to the bottom of the voice coil, the end wire being connected to the top of the voice coil; the beginning line and the ending line each have the horizontal segment, the vertical segment, and the extension segment; the starting line is also provided with a transition section, and the transition section extends from the bottom to the top of the voice coil and is connected with one end, far away from the vertical section, of the horizontal section.
5. A loudspeaker according to claim 4, wherein the start and end lines are provided on opposite sides of the voice coil, or wherein the start and end lines are on the same side of the voice coil.
6. The loudspeaker of any one of claims 1 to 5, wherein the resilient support comprises a spider comprising an outer fixing portion and an inner supporting portion connected inside the outer fixing portion, the side wall being connected to the inner supporting portion, the outer fixing portion being fixed to the bottom of the enclosure, the inner supporting portion having the pad disposed thereon.
7. The speaker of claim 6, wherein the outer fixing portion and the inner supporting portion are each a rectangular ring structure, and the outer fixing portion and the inner supporting portion are connected at a middle portion in a long axis direction.
8. The loudspeaker of claim 6, wherein the resilient support member further comprises a balance diaphragm;
the balance diaphragm comprises a first connecting portion, a first ring folding portion and a second connecting portion, the first ring folding portion and the second connecting portion are sequentially arranged, the first connecting portion is bonded to the bottom of the inner supporting portion, the second connecting portion is bonded to the bottom of the outer fixing portion, and the first ring folding portion corresponds to the gap.
9. The speaker according to claim 8, wherein the diaphragm includes a central portion, a second flange portion and an edge portion, the central portion, the second flange portion and the edge portion are sequentially disposed from inside to outside, the top wall is bonded to the central portion, the second flange portion is disposed corresponding to the first flange portion, and the edge portion extends downward from the second flange portion and is fixed to an outer side of the housing.
10. The loudspeaker of claim 9, wherein the central portion includes an inner ring portion formed by inward extension of an inner edge of the second flange portion and a reinforcement portion formed on the inner ring portion, and the top wall is bonded to the inner ring portion and the reinforcement portion.
11. The speaker of claim 10, wherein the top wall is provided with a connecting portion and a beading portion connected to the connecting portion, an outer edge of the reinforcing portion is formed with a groove, the beading portion is fitted into the groove and bonded to a groove wall of the groove, and the connecting portion is bonded to the inner ring portion.
12. A loudspeaker according to any one of claims 1 to 5, wherein the rim magnetic structure is an annular structure;
the side magnetic circuit structure comprises an annular side magnet and an annular side magnetic conduction plate arranged above the annular side magnet;
the edge magnetic conduction plate and the shell are of an integrally formed structure, or the edge magnetic conduction plate and the shell are of a split structure which is connected with each other.
CN202010898648.0A 2020-08-31 2020-08-31 Loudspeaker Active CN111935618B (en)

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CN111935618B true CN111935618B (en) 2021-01-22

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Citations (3)

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CN205847562U (en) * 2016-06-15 2016-12-28 瑞声科技(新加坡)有限公司 Mini-sound device
CN208638690U (en) * 2018-08-13 2019-03-22 瑞声科技(新加坡)有限公司 Loudspeaker
CN210745533U (en) * 2019-11-28 2020-06-12 厦门东声电子有限公司 Anti-vibration loudspeaker

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US8794374B2 (en) * 2010-08-18 2014-08-05 Em-Tech. Co., Ltd. Acoustic transducer device
CN109348371B (en) * 2018-09-30 2021-02-26 瑞声科技(新加坡)有限公司 Sound production device
CN209448890U (en) * 2019-03-28 2019-09-27 共达电声股份有限公司 Vibrating speaker
CN111405431B (en) * 2019-12-27 2021-07-09 瑞声科技(新加坡)有限公司 Sound production device and loudspeaker box thereof

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Publication number Priority date Publication date Assignee Title
CN205847562U (en) * 2016-06-15 2016-12-28 瑞声科技(新加坡)有限公司 Mini-sound device
CN208638690U (en) * 2018-08-13 2019-03-22 瑞声科技(新加坡)有限公司 Loudspeaker
CN210745533U (en) * 2019-11-28 2020-06-12 厦门东声电子有限公司 Anti-vibration loudspeaker

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