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WO2019205659A1 - Dispositif de production de son, module de production de son et terminal électronique - Google Patents

Dispositif de production de son, module de production de son et terminal électronique Download PDF

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Publication number
WO2019205659A1
WO2019205659A1 PCT/CN2018/120391 CN2018120391W WO2019205659A1 WO 2019205659 A1 WO2019205659 A1 WO 2019205659A1 CN 2018120391 W CN2018120391 W CN 2018120391W WO 2019205659 A1 WO2019205659 A1 WO 2019205659A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic portion
edge
lead
voice coil
Prior art date
Application number
PCT/CN2018/120391
Other languages
English (en)
Chinese (zh)
Inventor
程汉龙
张成飞
刘春发
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2019205659A1 publication Critical patent/WO2019205659A1/fr

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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
    • 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
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present application relates to the field of electroacoustic conversion, and more particularly, to a sounding device unit; the present application also relates to a sound emitting module and an electronic terminal using the sounding unit.
  • a sounding device is an important acoustic component in an electronic device that is a transducer that converts an electrical signal into an acoustic signal.
  • Existing sounding devices include a housing, and a magnetic circuit system and a vibration assembly disposed within the housing.
  • dynamic coil sounding devices are widely used in consumer electronic products, and their working methods can meet the needs of speakers and earpieces of electronic products.
  • the polarization problem of the voice coil and the diaphragm and the connection problem of the voice coil lead have been very difficult technical problems.
  • the two voice coils of the voice coil of the moving coil sound device need to be taken out from the voice coil and connected to the pad.
  • the lead wire will exert a pulling force on the voice coil, which will hinder the vibration of the voice coil to some extent. There is a risk that the voice coil will tear the voice coil lead when it vibrates.
  • the position where the lead is led out from the voice coil and the extended shape of the lead affect the vibration of the voice coil, causing the vibration system to be asymmetrical, eventually causing the voice coil to be polarized.
  • the vibration characteristics are sacrificed or the BL value is not high, so that the performance of the sounding device cannot meet the demand.
  • a sounding device unit comprising a magnetic circuit system, a vibration component and a circuit board;
  • the magnetic circuit system includes a yoke and a central magnetic portion and a side magnetic portion disposed on the yoke, and at least one of the central magnetic portion and the side magnetic portion includes a permanent magnet, and the central magnetic portion and the side magnetic portion a magnetic gap is formed therebetween, and the sounding device unit is formed with a carrying platform on a side of the side magnetic portion away from the magnetic gap;
  • the circuit board is fixedly disposed in the sounding device unit, and the circuit board has a pad;
  • the vibrating assembly includes a diaphragm and a voice coil, one end of the voice coil is connected to the diaphragm, and the other end is extended into a magnetic gap of a magnetic circuit system, and the lead coil is led out from the voice coil.
  • a side of the edge magnetic portion bypasses the side magnetic portion and extends onto the stage, the lead is fixed to the stage and electrically connected to the pad.
  • the edge magnetic portion includes a side magnet and an edge magnetic conductive plate disposed on an upper surface of the side magnet, and an outer edge of the side magnet extends outward to form a carrying platform facing the yoke.
  • the magnetic circuit system includes a side magnet and an edge magnetic conductive plate, wherein the side magnetic conductive plate is disposed on the side magnet, and the side magnetic conductive plate has a bending extending to the outer side of the side magnet.
  • the edge magnetic portion includes a side magnet and an edge magnetic conductive plate disposed on an upper surface of the side magnet, and an outer edge of the yoke is bent and extended to an outer side of the side magnet to form the bearing station.
  • the top surface of the loading platform includes a first inclined surface, a top plane, and a second inclined surface along a length direction of the edge magnetic portion, and the lead wire is at least fixed on the top plane, the first An inclined surface and a second inclined surface are spaced apart from both sides of the top plane.
  • the lead wire is fixed to the top surface of the stage by a damping glue.
  • the edge magnetic portion is formed with an opening at a position corresponding to the voice coil lead wire, and the lead wire passes through the opening to the outside of the corresponding side magnetic circuit, and is partially fixed to the carrying platform, and When the lead passes through the opening, the distance of the lead from its corresponding edge magnetic portion gradually decreases from a direction close to the magnetic gap to a direction near the outer side of the magnetic circuit.
  • the voice coil is jointly wound by two voice coil wires, and the voice coil has four lead wires, two of which are located on one side of the voice coil, and the other two wires are located on the voice coil.
  • the circuit board is formed with a pad at each opening, and the four leads respectively pass through the corresponding openings and are wound to the outside of the corresponding side magnetic circuit, and extend back to the corresponding adjacent pads. And electrically connected to the adjacent pads; wherein at least one of the four leads is fixed to the carrier when being wound to the outer side of the corresponding side magnetic circuit.
  • the adjacent pads of each of the two leads on the same side are pads formed at the opening of the other lead.
  • the central magnetic portion has a rectangular structure as a whole, and the side magnetic portions have four sides, and are disposed on four sides of the central magnetic portion, and two sides of the short side of the central magnetic portion are magnetically
  • the periphery of the portion is provided with a support table, and the lead-out positions of the four lead wires are located on the short side of the center magnetic portion, and the two lead wires on the same side of the voice coil are extended and fixed on the same one of the carrying platforms.
  • the four leads comprise two incoming wires and two outgoing wires
  • the internal circuit of the circuit board is configured to electrically connect the two incoming wires together to electrically connect the two outgoing wires together.
  • an edge portion of the diaphragm is fixed above the edge magnetic portion
  • the projection of the diaphragm in its direction of vibration is located within the outer contour of the magnetic circuit system.
  • the edge magnetic portion includes a side magnet and an edge magnetic conductive plate disposed on an upper surface of the side magnet, and an edge portion of the diaphragm is fixed on an upper surface of the side magnetic conductive plate.
  • an edge of the upper surface of the edge magnetic conducting plate is provided with a gasket, and an edge portion of the diaphragm is fixed on the gasket.
  • a flange is protruded upward from an edge of the edge magnetic conductive plate, and an edge portion of the diaphragm is fixed on the flange.
  • Another aspect of the present application provides a sound emitting module including a module housing and the sounding device unit mounted in the module housing.
  • Another aspect of the present application provides an electronic terminal including a terminal housing, and the sound emitting device unit mounted in the terminal housing or the sound emitting module mounted in the terminal housing.
  • the manner in which the leads are connected in the sounding device unit is improved, and the connection reliability of the leads is improved.
  • the technical solution proposed in the present application provides a support platform for supporting and fixing the wire segments that lead from the voice coil to the electrical connection with the pads.
  • the fixed connection of the lead wire in the sounding device unit is more stable, and it is not easy to cause the wire breakage, the detachment from the pad, the misalignment, etc. due to the vibration of the voice coil, and the stability of the lead wire is remarkably improved.
  • FIG. 1 is a top plan view showing the internal structure of a sound emitting device unit provided by the present application
  • FIG. 2 is a perspective view of the internal structure of a sounding device unit provided by an embodiment of the present application
  • Figure 3 is a partial enlarged view of Figure 2;
  • Figure 4 is a partial side cross-sectional view of the sounding device unit shown in Figure 2;
  • FIG. 5 is a partial isometric view of the internal structure of a sounding device unit provided by another embodiment of the present application.
  • Figure 6 is a partial side cross-sectional view of the sounding device unit shown in Figure 5.
  • the present application provides an improved sounding device unit that includes a magnetic circuit system, a vibrating assembly, and a circuit board.
  • the sounding device unit can be applied to the sounding module and the electronic terminal.
  • the magnetic circuit system includes a yoke and a central magnetic portion 11 and a side magnetic portion 10 disposed on the yoke, and at least one of the central magnetic portion 11 and the side magnetic portion 10 includes a permanent magnet.
  • the side magnetic portion 10 is disposed around the center magnetic portion 11, and a gap is left between the magnetic portion 10 and the central magnetic portion 11, and the gap is used to constitute a magnetic gap in the magnetic circuit system.
  • the central magnetic portion 11 and the side magnetic portion 10 form a center-uniform magnetic field at the magnetic gap for driving the vibration of the vibration assembly.
  • the present application does not limit the specific structural form of the central magnetic portion 11 and the side magnetic portion 10, and the central magnetic portion 11 and the side magnetic portion 10 may be configured by different combinations of components depending on the product structure and performance requirements of the actual application.
  • the central magnetic portion 11 includes a center magnet and a central magnetically permeable plate 14, and the rim portion includes an edge magnet 12 and a side disposed on the upper surface of the side magnet 12.
  • Magnetic guide plate 13 In other embodiments, the central magnetic portion 11 may also be composed of a T-shaped magnet, and the edge magnetic portion is an annular magnetic conductive member that is sleeved around the T-shaped magnet.
  • the magnetic circuit system is formed with a carrying platform 101 on a side of the side magnetic portion away from the magnetic gap, and a top surface of the carrying platform 101 is used for carrying or extending a connection to or extending from the fixed connection.
  • Lead 22 In the present application, the peripheral edge of the magnetic portion is located on the side of the magnetic portion away from the central magnetic portion. Alternatively, the side magnetic portion is located on one side of the outer surface of the sounding device unit.
  • the circuit board 3 is fixedly disposed in the sounding device unit, and the circuit board 3 has a pad 31 thereon.
  • the circuit board 3 is used for transmitting a sound signal into the vibration component, thereby causing the vibration component to generate vibration and sound.
  • the vibration assembly includes a diaphragm and a voice coil, and one end of the voice coil is coupled to the diaphragm, and an edge of the diaphragm may be fixed inside the sounding device unit.
  • the diaphragm suspends the voice coil in the sounding device unit, and the end of the voice coil away from the diaphragm can extend into the magnetic gap formed by the magnetic circuit system.
  • the voice coil 21 is provided with a lead 22 for introducing a sound signal into the voice coil 21, and the lead 22 is electrically connected to the pad 31 on the circuit board 3 to form a lead 22 The signal is turned on.
  • the lead 22 drawn from the voice coil 21 does not extend directly in a straight line to the area where the pad 31 is located on the circuit board 3.
  • the voice coil 21 is located inside the side magnetic portion 10 and at the outer periphery of the center magnetic portion 11. After the lead 22 is taken out from the voice coil 21, it extends first around the side magnetic portion 10 and extends to the periphery of the side magnetic portion 10. Preferably, the lead 22 is wound from the side of the side magnetic portion 10 to the periphery of the side magnetic portion 10 instead of being bypassed from the top of the side magnetic portion 10.
  • the edge magnetic portion may have a structure such as an opening, an opening, a slit, etc., for the lead wire to pass through and perform winding, and the present application does not limit the structure of the magnetic portion.
  • the lead 22 extends to the stage 101 located on the periphery of the side magnetic portion 10, and then electrically connected to the pad 31. The lead wire 22 can be fixed to the stage 101 by bonding and welding.
  • the technical solution proposed by the present application provides a support platform for supporting and fixing the connection of the wire lead from the voice coil to the electrical connection with the pad.
  • the fixed connection of the lead wire in the sounding device unit is more stable, and it is not easy to cause the wire breakage, the detachment from the pad, the misalignment, etc. due to the vibration of the voice coil, and the stability of the lead wire is remarkably improved.
  • the lead wire is drawn from the voice coil and then wound around the periphery of the magnetic portion, and the extended distance is longer, and the amount of elastic deformation is larger.
  • the lead wire causes a relatively low pulling force on the voice coil, and accordingly, the voice coil is less likely to cause defects such as wire breakage when vibrating.
  • the application of the sounding device unit is more reliable.
  • the edge magnetic portion may include a side magnet 12 and an edge magnetic plate disposed on the upper surface of the side magnet.
  • the outer edge of the side magnet 12 extends outwardly to form a carrier 101 facing the yoke.
  • an outer edge of the side magnet 12 near the side of the magnetic conductive plate is bent and extended toward the yoke to form a pad, and the pad is placed on a side of the side magnet body away from the magnetic gap,
  • the stage constitutes the stage 101.
  • This application does not limit the form in which the pedestal is formed on the side magnets.
  • the top surface of the pedestal is lower than the top surface of the side magnet body, so that the pedestal can more accurately position the lead.
  • the edge magnetic portion may comprise a total of two or four side magnets 12, wherein a support table may be formed only on the periphery of the two side magnets 12.
  • the present application does not limit the side magnetic portion to include a plurality of side magnets and which side magnets are formed with a support table. In the specific implementation, it can be configured according to the performance and shape requirements of the sounding device unit.
  • the edge magnetic portion includes four side magnets 12, and the four side magnets 12 enclose an approximately rectangular structure, and an opening is formed between the adjacent two side magnets 12 for facilitating the lead wires. 22 is led out from the inside of the side magnetic portion to the outside.
  • the outer side of the two shorter side magnets 12 which are symmetrically distributed is formed with a carrying platform 101, and the outer side of the two longer side magnets 12 has no carrying platform 101.
  • the lead wire 22 is taken out from the voice coil 21 located in the magnetic gap 15, and is wound around the end of the side magnet 12 via the opening between the ends of the adjacent two side magnets 12.
  • the outer edge of the partial magnetic circuit portion refers to the side of the magnetic circuit portion away from the central magnetic circuit portion and the magnetic gap.
  • the side magnetic circuit portion is located on one side of the outer surface of the sounding unit.
  • the magnetic circuit system may further include an edge magnet 12 and an edge magnetic conductive plate 13 disposed on an upper surface of the side magnet 12.
  • the side magnetic conductive plate 13 is placed on the side magnet 12, that is, the side magnetic conductive plate 13 and the side magnet 12 are overlapped.
  • the side magnetic conducting plate 13 shown in Fig. 6 is located on the lower side of the side magnet 12, and the side magnetic conducting plate 13 which is also described in the present application is covered on the side magnet 12.
  • the magnetic conductive plate 13 has a flange that is bent to extend outside the side magnet 12, and the flange extends to surround the outer surface of the side magnet 12.
  • the end face of the flange may be used to form the stage 101, and the lead 22 drawn from the voice coil 21 may be wound around the flange on the outer side of the side magnet 12. Similar to the embodiment shown in FIGS. 2-4, the embodiment shown in FIGS. 5 and 6 also adopts a scheme in which the side magnetic portion has four side magnets 12, and each side magnet 12 can be provided with a side magnetic conductive plate. 13.
  • the above two embodiments have the advantages that, on the one hand, the structural features of forming the carrying platform by the side magnet or the side magnetic conductive plate are simple, the processing and assembly process are simple, and the production cost of the sounding device unit is not significantly increased.
  • the edge magnet or the side magnetic plate is located at the outermost periphery of the entire magnetic circuit system, and a carrier is formed on the outer side thereof, which can maximize the extension length of the lead and reduce the risk of wire breakage.
  • the overall structural shape and space occupancy of the sounding device unit are not significantly affected.
  • the side magnet and the side magnetic conductive plate are all stable components fixed in the single sounding device, and the lead wire extended to the upper surface of the lead wire is fixed, the stability is higher, and the swaying is less likely to occur.
  • the present application does not limit the necessity of forming a carrier on a side magnet or a side magnetically permeable plate.
  • the edge magnetic portion is formed by a ring-shaped magnetically permeable member, or the edge magnetic portion is formed of a magnetically permeable side wall member.
  • the carrier can also be formed on the peripheral surface of these structures.
  • the periphery of the edge magnetic portion may be butted with a support housing, a support frame, and the like, and a carrier may be formed on the components located on the periphery of the edge magnetic portion.
  • the edge magnetic portion includes an edge magnet and an edge magnetic conductive plate disposed on an upper surface of the edge magnet
  • the magnetic circuit system further includes a yoke
  • the central magnetic portion is disposed In the center of the yoke, an outer edge of the yoke is bent and extended toward a side of the side magnet to form the stage. After the lead is taken out of the voice coil, for example, it can be extended and fixed on a carrier formed by the edge of the yoke.
  • the edge of the yoke has a magnetic conductive sidewall as the edge magnetic portion, and the outer side of the magnetic conductive sidewall has an outwardly protruding pad, and the pad constitutes the carrier.
  • This embodiment is suitable for a sounding device unit that is not provided with a side magnet.
  • the pad protruding from the outside of the magnetic conductive side wall provides an additional fixing space for the lead wire, extending the extension length of the lead wire, and winding the lead wire to the magnetic conductive side wall.
  • the outer part has enough space for fixing and placing.
  • the top surface of the loading platform 101 extends along the length direction of the side magnetic portion 10.
  • the side magnetic portion 10 or the side magnet 12 shown in Figs. 1-3 has a rectangular structure, and the top surface of the stage 101 extends along the long axis of the rectangle.
  • the portion of the lead 22 wound around the outer side of the side magnetic portion 10 is also lined along the longitudinal direction of the side magnetic portion 10, and is placed and attached to the top surface of the stage 101.
  • the magnetic portion is not rectangular but has a circular arc shape, and the longitudinal direction is understood to be a direction extending along a circular arc.
  • the top surface of the stage 101 includes a first inclined surface 1012 and a top plane 1011.
  • the first inclined surface 1012 and the top plane 1011 extend along the length direction of the side magnet 12.
  • the lead 22 is connected to the top plane 1011 at least.
  • the lead 22 is fixedly connected to the carrying platform 101 by the bearing and connection of the top plane 1011.
  • the area of the lead corresponding to the first inclined surface 1012 may be suspended on the first inclined surface 1012 or attached to the first inclined surface 1012, which is not limited in the application. If the lead is not attached or connected to the first inclined surface, the suspended portion can swing with the vibration of the voice coil. This feature extends the length that the lead can swing, reducing the force of pulling between the lead and the voice coil.
  • connection length between the lead and the stage can be increased, the stability of the lead can be improved, and the problem of disconnection, misalignment, and detachment of the lead can be prevented.
  • Whether the specific lead is connected to the first inclined surface can be selected according to the actual application.
  • the top surface of the loading platform 101 may further include a second inclined surface 1013, and the second inclined surface 1013 is abutted away from the first inclined surface of the top plane 1011.
  • the top plane 1011 abuts the first inclined surface 1012 and the second inclined surface 1013 along both sides in the longitudinal direction of the side magnet 12.
  • the lead 22 passes over the inclined surface on the stage 101 and is then connected to the top plane 1011.
  • one end of the side magnet 12 has a lead 22 wound around the periphery of the side magnet 12.
  • the lead 22 first passes over the inclined surface, which is not in contact with the inclined surface but is suspended above the inclined surface.
  • the lead 22 is then in contact with the top plane 1011 located intermediate the stage 101.
  • the lead 22 is attached to the inclined surface on the other side of the top plane 1011, extending downward along the inclined surface, and the end of the lead 22 is attached to the pad 31.
  • the lead is adhesively bonded to the top surface of the carrier by a damping glue.
  • the bonding form of the damping glue belongs to a flexible connection, and the lead wire can still have a certain floating ability with respect to the top surface of the carrying platform under the bonding action of the damping glue.
  • the voice coil vibrates
  • the lead wire can vibrate to some extent with the voice coil, and the line segment of the lead wire connected to the carrying table can still float slightly under the action of the damping glue. In this way, on the one hand, the lead wire is prevented from being subjected to excessive pulling force and the wire is broken.
  • the damping glue can absorb the vibration on the lead wire, so that the wire segment for connecting to the pad does not vibrate, and the electrical connection reliability Significantly improved.
  • the top surface of the loading platform includes an inclined surface and a top surface
  • the inclined surface and the lead may be coated with a damping glue to enhance the buffering and absorption of the lead. The performance of vibration.
  • the lead wire is led out from the voice coil to a line segment extending to the stage and suspended in the sounding device unit.
  • the suspended wire segments can vibrate with the voice coil, and the longer the free-hanging segment, the vibration-induced wire deformation can be better dispersed into a longer area, thereby reducing the risk of wire breakage.
  • the length of the lead is first increased by winding the lead drawn from the voice coil to the outside of the side magnetic portion, so that the deformation can be more dispersed. Further, by extending the length of the suspended wire segment of the lead wire, the deformation can be better dispersed, and the wire can be prevented from being broken or misaligned due to vibration.
  • the edge magnetic portion is formed with an opening at a position corresponding to the voice coil with the lead wire drawn.
  • the above-mentioned openings are formed between the ends of the adjacent two linear magnets 12.
  • the lead wire 22 is bent back from the opening, bent to the outside of the side magnetic portion 12, and attached to the stage 101 outside the side magnet 12.
  • the lead wire is led out from the voice coil until it extends to the mounting platform and is fixedly connected to the carrying platform, and the extension extends to form a suspended line segment, which is a suspended segment.
  • the suspended section passes through the opening corresponding to its position, the distance of the suspended section from its corresponding edge magnetic portion gradually decreases from the portion close to the magnetic gap to the portion near the carrying platform.
  • the suspended section includes a first extension, a bypass, and a second extension.
  • the first extension is a line segment extending from the voice coil to the opening; the winding segment is a line segment extending to the periphery of the edge magnetic portion after the lead extends to the opening; and the second extension is a lead extension After the periphery of the magnetic portion, the line segment is further bent and extended toward the carrying platform.
  • the first extension and the second extension are parallel to each other, and the length of the first extension is greater than the length of the second extension.
  • the shape of the entire suspended section is similar to the shape of a trapezoid, and the first extending section and the second extending section form two bottom edges of the trapezoid, and the winding section forms a trapezoidal waist.
  • the top view shape formed by the extension of one lead is not a complete trapezoid, but is similar to a non-closed shape in which the trapezoid has only one waist.
  • the sounding device unit has a rectangular structure as a whole.
  • the edge magnetic portion 10 is divided into four linear magnetic portions 10, and the circuit board 3 is The side magnetic portions 10 are arranged to overlap each other.
  • the position of the pad 31 on the circuit board 3 is located at both ends of the side magnetic portion 10 having the stage 101.
  • the lead wires 22 can be naturally routed to the pads 31 after passing through the stage 101, facilitating the formation of electrical connections.
  • each of the carrying stations 101 carries two of the leads 22 thereon. The ends of the two leads 22 are respectively connected to the pads 31 at both ends of the linear side magnetic portion 10, and the winding directions of the two leads 22 are opposite.
  • the voice coil is led out with four leads, wherein the lead positions of the two leads are located on one side of the voice coil, and the lead positions of the other two leads are located on the other side of the voice coil.
  • the voice coil is integrally formed by a combination of two voice coil wires, and the two ends of the two voice coil wires serve as four lead wires respectively.
  • the voice coil is integrally wound into a rectangular ring structure in which two leads are led out from one short side of the voice coil, and the other two leads are taken out from the other short side of the voice coil.
  • two leads on the same side of the voice coil extend to the same one of the carrying stages, and the two leads may surround the side magnets for forming the carrying table, which is not limited in the present application.
  • the winding of the voice coil is wound by two voice coils, and the two incoming wires and the two outgoing wires form four floating leads.
  • the four suspended leads form a geometrically symmetric distribution, and the reaction force to the vibration system is more symmetrical when vibrating, thereby greatly reducing the polarization of the product, improving the distortion and improving the sound quality; in addition, the design makes the sounding monomer have a higher BL value, thereby improving The sensitivity of the monomer.
  • the central magnetic portion may include a central magnet and a central magnetic conductive plate 14 , and the central magnetic conductive plate 14 is covered on the central magnet to Gather the magnetic lines of force.
  • the center magnetic conductive plate 14 can be fixed to the magnetic portion by, for example, bonding.
  • the edge magnetic portion may include a side magnet and an edge magnetic conductive plate 13, and the side magnetic conductive plate 13 is covered on the side magnet.
  • the side magnetic conductive plate may also adopt an integral annular structure while being bonded to the surfaces of the plurality of side magnets.
  • the sounding device unit provided by the present application does not have an outer casing for carrying the components, and the magnetic circuit system itself constitutes a main structure of the sounding device unit.
  • the diaphragm is exposed on the top of the sounding device unit, the edge of the diaphragm is fixed above the side magnetic portion, and the voice coil 31 is connected to the central portion of the diaphragm.
  • the projection of the diaphragm in its own direction of vibration lies within the outer contour of the magnetic circuit system.
  • the end of the voice coil 31 away from the diaphragm can be suspended in the magnetic gap 10 by the suspension action of the diaphragm.
  • the outer surface of the magnetic circuit system is directly exposed, and the sounding device unit can be directly assembled in the sound emitting device module or the electronic terminal through the magnetic circuit system, and no additional configuration is required.
  • an edge portion of the diaphragm may be fixed to an upper surface of the side magnetic conductive plate.
  • the edge portion of the diaphragm can be fixed to the flange.
  • a gasket may be provided on the edge of the upper surface of the side magnetic conductive plate, and the edge portion of the diaphragm may be fixed to the flange.
  • the sounding unit can be directly installed in the module housing to form a sounding module. It is also possible to mount the sounding unit directly into the terminal housing to form an electronic terminal. Or it is installed in the terminal housing in the form of a sounding module to form an electronic terminal, which will not be specifically described herein.
  • the application provides a sounding module, which comprises a module housing and the sounding device unit, and the sounding device unit is disposed in the module housing.
  • the application further provides an electronic terminal, which comprises a terminal housing, wherein the terminal can be provided with a sounding device unit or a sounding module carrying a sounding device unit.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne un dispositif de production de son, un module de production de son et un terminal électronique. Le dispositif de production de son comprend un système de circuit magnétique, un ensemble de vibration et une carte de circuit imprimé. Le système de circuit magnétique comprend : une culasse magnétique; et une partie magnétique centrale et une partie magnétique latérale qui sont disposées sur la culasse magnétique. La partie magnétique centrale et/ou la partie magnétique latérale comprennent un aimant permanent. Un entrefer magnétique est formé entre la partie magnétique centrale et la partie magnétique latérale. Dans le dispositif de production de son, un support est formé sur un côté de la partie magnétique latérale à l'opposé de l'espace magnétique. La carte de circuit imprimé est disposée de manière fixe dans le dispositif de production de son et a un tampon sur celle-ci. L'ensemble de vibration comprend un diaphragme et une bobine acoustique. Une extrémité de la bobine acoustique est reliée au diaphragme, et l'autre extrémité s'étend dans l'entrefer magnétique du système de circuit magnétique. Un conducteur s'étendant à partir de la bobine acoustique contourne la partie magnétique latérale au niveau d'un côté de la partie magnétique latérale et s'étend vers le support. Le fil est fixé sur le support et forme une connexion électrique avec le tampon. De cette manière, le support supporte un segment de fil à partir du point où le fil s'étend de la bobine acoustique au point où le fil forme la connexion électrique avec le tampon, améliorant ainsi la stabilité du fil.
PCT/CN2018/120391 2018-04-27 2018-12-11 Dispositif de production de son, module de production de son et terminal électronique WO2019205659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201820625404.3 2018-04-27
CN201820625404 2018-04-27

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WO2019205659A1 true WO2019205659A1 (fr) 2019-10-31

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WO (1) WO2019205659A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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