WO2019205656A1 - 发声装置单体、发声模组及电子终端 - Google Patents

发声装置单体、发声模组及电子终端 Download PDF

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Publication number
WO2019205656A1
WO2019205656A1 PCT/CN2018/120383 CN2018120383W WO2019205656A1 WO 2019205656 A1 WO2019205656 A1 WO 2019205656A1 CN 2018120383 W CN2018120383 W CN 2018120383W WO 2019205656 A1 WO2019205656 A1 WO 2019205656A1
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WO
WIPO (PCT)
Prior art keywords
lead
magnetic
device unit
magnetic portion
sounding device
Prior art date
Application number
PCT/CN2018/120383
Other languages
English (en)
French (fr)
Inventor
程汉龙
张成飞
刘春发
Original Assignee
歌尔股份有限公司
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Filing date
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2019205656A1 publication Critical patent/WO2019205656A1/zh

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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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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
    • 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

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 structure for carrying and connecting voice coil wires is provided in a moving coil sounding device.
  • the voice coil wire is still prone to problems such as vibration floating, adhesive degumming, and detachment from the load-bearing structure.
  • the flying height of the voice coil line in the sounding device unit is not easily controlled.
  • 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 provided with a lead fixing member 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 vibration assembly includes a diaphragm and a voice coil, and the diaphragm is configured to be vibrated up and down in a sounding device unit, one end of the voice coil is connected to the diaphragm, and the other end is extended to the magnetic circuit system.
  • a lead wire is drawn on the voice coil, and the lead wire passes through the side magnetic portion from the side of the side magnetic portion and passes through the lead fixing member, and the lead fixing member is configured to at least vocalize
  • the leads are restricted from the upper and lower sides of the leads, and the leads are electrically connected to the pads.
  • the lead fixture comprises a first component facing the yoke direction and a second component facing the diaphragm direction, the first component and the second component being oppositely disposed, leaving a gap between the first component and the second component There is a gap for the lead to pass through.
  • the lead fixture has a perforation therein, the perforation for the lead to pass through.
  • the edge magnetic portion includes a side magnet and an edge magnetic conductive plate, and the side magnetic conductive plate is disposed on the side magnet;
  • a side of the side magnet away from the magnetic gap is formed with a pad, and the side magnetic plate has a flange extending to a side of the side magnet away from the magnetic gap;
  • the yoke has a pad extending to a side of the side magnet away from the magnetic gap, the side magnetic plate having a flange extending to a side of the side magnet away from the magnetic gap;
  • the pedestal and the flange serve as the second component and the first component, respectively.
  • the lead fixing member is bonded or injection-molded on a side of the edge magnetic portion away from the magnetic gap.
  • the lead fixture is an elastic member.
  • the first component and/or the second component are elastic members.
  • the top surface of the first component and/or the second component comprises a top plane, the first component and/or the second component being on both sides of the top plane along the length direction of the edge magnetic portion Formed with a first inclined surface, the lead is fixed at the top plane.
  • the edge magnetic portion is formed with an opening at a position corresponding to the voice coil lead wire, and the lead wire extends from the opening to extend to the outer side of the edge magnetic portion, and the lead wire extends from the voice coil to The line segment of the lead fixture is suspended in the sounding device unit.
  • 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.
  • Two lead fixing members are disposed on a side of the edge magnetic portion away from the magnetic gap, and two leads on the same side of the voice coil extend through the same one of the lead fixing members.
  • 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.
  • 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.
  • FIG. 1 is a perspective view of the internal structure of a sounding device unit provided by an embodiment of the present application
  • Figure 2 is a partial enlarged view of Figure 1;
  • FIG. 3 is a partial side cross-sectional view showing the internal structure of a sound emitting device unit according to an embodiment of the present application
  • FIG. 4 is a partial side cross-sectional view showing the internal structure of a sound emitting device unit according to another embodiment of the present application.
  • 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 and a side magnetic portion disposed on the yoke, the side magnetic portion is disposed around the central magnetic portion, and the magnetic portion and the central magnetic portion There is a gap between them that is used to form the magnetic gap in the magnetic circuit system.
  • At least one of the central magnetic portion and the side magnetic portion includes a permanent magnet.
  • the central magnetic portion and the edge magnetic portion form a centrally uniform magnetic field at the magnetic gap for driving the vibration of the vibrating assembly.
  • the present application does not limit the specific structural form of the central magnetic portion and the edge magnetic portion, and the central magnetic portion and the edge magnetic portion may be configured by different component combinations according to actual product structure and performance requirements. For example, in the embodiment shown in Figs.
  • the central magnetic portion includes a center magnet and a center magnetic conductive plate 14, and the side magnetic portion includes a side magnet 12 and an edge magnetic conductive plate 13.
  • the central magnetic portion may also be formed by 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 provided with a lead fixing member 101 on the side of the side magnetic portion away from the magnetic gap, and the lead fixing member 101 is used for carrying or fixing a lead wire extending thereto or extending therefrom. twenty two.
  • 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. Under the driving of the voice coil, the diaphragm can vibrate up and down in the longitudinal direction of the single body in the sounding device unit.
  • 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 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 and at the outer periphery of the center magnetic portion. After the lead 22 is taken out from the voice coil 21, it extends first around the side magnetic portion and extends to the side of the side magnetic portion that is away from the magnetic gap.
  • the lead fixing member is disposed to at least limit the height position of the lead wire in the sounding device unit from the upper side and the lower side of the lead wire along the upper and lower vibration directions of the diaphragm; that is, the sounding device unit In the height direction, the position of the lead is limited from the upper and lower sides.
  • the line segment in which the lead wire is fixed in the sounding device unit is prevented from floating up and colliding with the vibration of the diaphragm.
  • the lead 22 is wound from the side of the side magnetic portion to the periphery of the side magnetic portion instead of being bypassed from the top of the side magnetic portion.
  • 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 into the lead fixture 101 located at the periphery of the side magnetic portion, and then is electrically connected to the pad 31.
  • the lead 22 may be fixedly connected to the lead fixing member 101 by bonding, soldering or the like.
  • the lead fixture 101 has slits, perforations or other structures therein to enable the leads 22 to pass through the lead fixture 101.
  • the lead fixing member 101 fixes the lead 22 through the slit sandwiching or fixing the lead 22 by the radial restriction of the through hole. At least, the lead fixing member can function as a restriction position from the upper and lower sides of the lead.
  • the technical solution proposed by the present application provides a wire fixing member which is a fixed connection and a position-limiting function for a line segment from which the lead wire is led out 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 the height of the lead wire is effectively limited by the radial limit action applied to the partial line segment of the lead wire by the lead wire fixing member.
  • the lead wire is less likely to cause wire breakage, undulation or detachment from the pad due to vibration of the voice coil, and the like, 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 lead fixture may include a first member facing the yoke direction and a second member facing the diaphragm direction, that is, the lead fixture cooperates with the two portions to effect a limit on the lead.
  • the first member 1011 and the second member 1012 are disposed opposite each other with a gap therebetween for the lead 22 to pass therethrough.
  • the sandwiching between the first member 1011 and the second member 1012 allows the lead 22 to be fixed in the slit without floating up and down.
  • the present application does not limit how the first component and the second component are formed or disposed in the sounding device unit, and can be designed according to the requirements of the actual application.
  • the lead fixture may have a through hole, and the length of the through hole may match the length of the edge magnetic portion for receiving the lead.
  • the lead wire passes through the through hole, and the wire segment located in the through hole is restricted by the position of the through hole, and problems such as undulation, off-line, and wire breakage do not occur.
  • the present application does not limit how the lead fixing portion forms a perforation, and may directly form a through hole in one integral member, or may be mutually engaged by two members, and the through hole is formed by forming a groove on the surfaces that are mutually engaged. .
  • the magnetic circuit system may include a side magnet 12 and an edge magnetic conductive plate 13.
  • the side magnetic conductive plate 13 is covered by the side magnet 12 Upper, the side magnetic conductive plate 13 and the side magnet 12 are disposed to overlap each other.
  • the side magnetic conducting plate 13 shown in Fig. 3 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 placed on the side magnet 12.
  • a side of the side magnet 12 remote from the magnetic gap is formed with a pedestal that constitutes the second member 1012. The pedestal may be further protruded from the outer side surface of the side magnet 12 toward the outer side of the side magnet, or may be formed in other forms, which is not limited in the present application.
  • the top surface of the pedestal is offset from the top surface of the side magnet 12 to enable the pedestal to more accurately position the lead.
  • the side magnetic conductive plate 13 has a flange extending to a side of the side magnet 12 away from the magnetic gap, 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 first member 1011, and the lead 22 drawn from the voice coil 21 may be wound around the outside of the side magnet 12 to be inserted into the gap between the pad and the flange.
  • the pad and flange combination constitutes the lead fixture of the present application.
  • the yoke has the pad extending to a side of the side magnet away from the magnetic gap
  • the side magnetic plate has a magnetic field extending to the side magnet
  • the bent side of one side of the gap is composed of a yoke and a side magnetic conductive plate to constitute a second member and a first member, respectively.
  • the edge magnetic portion may include a total of two or four side magnets 12 and a side magnetic conductive plate 13, wherein the lead fixing members may be formed only on the periphery of the two side magnets 12 and the side magnetic conductive plates 13.
  • the present application does not limit the side magnetic portion to include a plurality of side magnets and side magnetic conductive plates, which side magnets, and side magnetic conductive plates are formed with lead fixing members. In the specific implementation, it can be configured according to the performance and shape requirements of the sounding device unit. In the embodiment shown in FIGS.
  • the edge magnetic portion includes four side magnets 12 and four side magnetic conductive plates 13, and the four side magnets 12 enclose an approximately rectangular structure, and adjacent two side magnets 12 An opening is formed therebetween to facilitate the lead 22 to be led out from the inside of the side magnetic portion to the outside.
  • the outer sides of the symmetrically distributed two shorter side magnets 12 and the side magnetic conductive plates 13 are formed with lead fixing members 101, and the outer sides of the two longer side magnets 12 have no lead fixing members 101.
  • the lead wire 22 is taken out from the voice coil 21 located in the magnetic gap 15, as shown in Figs. 3 and 4, and is wound around the lead fixing member 101 outside the side magnet 12 through the opening between the ends of the adjacent two side magnets 12. .
  • the above embodiment has the advantages that, on the one hand, the structural features of the lead fixing member formed by the edge 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 side magnet or the side magnetic conducting plate is located at the outermost periphery of the entire magnetic circuit system, and a lead fixing member is formed on the outer side thereof, which can maximize the extension length of the lead wire 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 fixing member to which the lead wire extends is fixed, the stability is higher, and the swaying is less likely to occur.
  • a separate lead fixture 101 is directly disposed on the periphery of the side magnet 12 and the side magnetic conductive plate 13.
  • the lead fixing member 101 may be attached or bonded to the outer surface of the side magnet 12 and the side magnetic conductive plate 13, or may be fixed thereto by injection molding, and the present application does not limit the specific connection manner.
  • the lead fixing portion 101 may be divided into the first member 1011 and the second member 1012 which are independent of each other, or may be the first member 1011 and the second member 1012 which are connected to each other, and the present application also does not limit this.
  • the first component 1011 and the second component 1012 shown in Figure 4 are independent of each other and have no connection. Whereas there is an interconnected area between the first component 1011 and the second component 1012 shown in FIG.
  • the lead fixing member 101 may be a unitary structure in which a through hole is provided.
  • the lead fixing member 101 is entirely attached to the outer surface of the side magnetic portion.
  • the lead fixture may be an elastic member, and the elastic lead fixture is capable of absorbing the vibration of the lead by elastic deformation to protect the lead when the lead is pulled by the voice coil to have a relative movement tendency.
  • the contact between the elastic member and the lead wire is a flexible contact, which avoids a phenomenon of rigid collision, friction, and the like between the lead fixing member and the lead wire, and further reduces problems such as damage of the lead wire and disconnection.
  • the lead fixing member may be made of a material such as foam, elastic rubber or the like, and then form a fixed connection with the edge magnetic portion by adhesive bonding or injection molding.
  • either one may be an elastic member and the other may still have an edge magnet or an edge magnetic plate or other non-elastic deformation capability.
  • the first component is an elastic member and the second component is not an elastic member, and the end faces of the two are clamped to each other to limit the position of the lead.
  • both the first component and the second component are elastic members. This application does not limit the use of elastic members.
  • the first component 1011 and the second component 1012 can comprise a top plane, as shown in Figures 1 and 2, the top plane being used for Contact with the lead, fix and clamp the lead.
  • the top plane of the lead fixture 101 extends along the length of the side magnetic portion.
  • the side magnetic portions or side magnets 12 shown in Figures 1 and 2 have a rectangular configuration, and the top planes of the first member 1011 and the second member 1012 extend along the long axis of the rectangle.
  • the portion of the lead 22 wound to the outside of the side magnetic portion is also along the longitudinal direction of the side magnetic portion and is sandwiched between the top surfaces of the first member and the second member.
  • 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 first component and/or the second component further includes a first inclined surface.
  • the first member 1011 further has a first inclined surface 1013 along which the first inclined surface 1013 is located on both sides of the top plane.
  • the top plane is located at the highest position of the top portion on the first member and/or the second member, and the first inclined surface is located on both sides of the top plane, and the height is gradually lowered.
  • the lead 22 can be at least in contact with the top plane and fixedly connected.
  • the area of the lead corresponding to the first inclined surface 1013 may be suspended on the first inclined surface 1013 or attached to the first inclined surface 1013, which is not limited in the application.
  • 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. If the lead is attached or connected to the first inclined surface, the connection length between the lead and the lead fixing member can be increased, the stability of the lead can be improved, and the problem that the lead is broken, misaligned, or detached from the pad can be prevented. Whether the specific lead is connected to the first inclined surface can be selected according to the actual application.
  • the lead 22 is wound from the side of the side magnetic portion to the periphery of the side magnet 12, and the lead wire 22 passes through the inclined surface on the lead fixing member 101, and then connects to the top plane.
  • the lead wire is adhesively bonded to the top surface of the lead fixing member 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 lead fixing member 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 lead wire fixing member 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 first component and/or the second component includes an inclined surface and a top plane, if the lead is suspended on the inclined surface, the inclined surface and the lead may be coated with a damping glue. Thereby enhancing the buffering and absorbing vibration performance of the lead.
  • 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 and bent to the outside of the side magnetic portion 12, and is attached to the lead wire fixing member 101 outside the side magnet 12.
  • 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.
  • Two lead fixing members are provided on a side of the side magnetic portion of the sounding device unit that is away from the magnetic gap.
  • 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 lead fixing member, and the two leads may surround the edge magnetic portion for forming the lead fixing member, which is not limited in the application.
  • the winding of the voice coil is wound by two voice coil wires, and the two voice coil wires are connected in parallel, so that the two wires can be connected in parallel under the premise of the same resistance value, and the wire diameter is smaller than that of the single wire.
  • the thickness of the voice coil is thinner, the magnetic gap can be narrower, and the BL value is higher, thereby improving the sensitivity of the vibration system and improving the sound generation performance of the sounding unit.
  • the sounding device unit has a rectangular structure as a whole, as shown in FIG. 1 and FIG. 2, the edge magnetic portion is four linear magnetic portions, and the circuit board 3 and the edge magnetic portion are Overlap settings. Specifically, the position of the pad 31 on the circuit board 3 is located at both ends of the side magnetic portion having the lead fixing member 101.
  • the lead 22 can be naturally routed to the pad 31 after passing through the lead fixture 101 to facilitate electrical connection.
  • one of the lead wires 22 is carried on one of the lead fixing members 101. The ends of the two leads 22 are respectively connected to the pads 31 at both ends of the linear side magnetic portion, and the winding directions of the two leads 22 are opposite.
  • 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 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 away from the diaphragm can be suspended in the magnetic gap 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.
  • 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.

Abstract

本申请公开了一种发声装置单体、发声模组和电子终端。包括磁路系统、振动组件和电路板；磁路系统包括磁轭和设置在磁轭上的中心磁部和边磁部,中心磁部和边磁部中的至少一个包含永磁体，中心磁部与边磁部之间形成有磁间隙，发声装置单体在边磁部的远离磁间隙一侧设置有引线固定件；电路板固定设置在发声装置单体中，电路板上具有焊盘；振动组件包括振膜和音圈，振膜被配置为能够在发声装置单体中上下振动，音圈的一端连接在振膜上，另一端伸入至磁路系统的磁间隙中，音圈上引出有引线，引线从边磁部的侧面绕过边磁部并穿过引线固定件，引线固定件被配置为，至少在发声装置单体的高度方向上，从引线的上侧和下侧限制引线，从而提高引线的可靠性。

Description

发声装置单体、发声模组及电子终端 技术领域
本申请涉及电声转换领域，更具体地，本申请涉及一种发声装置单体；本申请还涉及一种应用此发声单体的发声模组以及电子终端。
背景技术
发声装置是电子设备中的重要声学部件，其为一种把电信号转变为声信号的换能器件。现有的发声装置包括外壳，以及设置在外壳内的磁路系统以及振动组件。
其中，动圈式发声装置广泛应用于消费类电子产品中，其工作方式能够满足电子产品的扬声器、听筒的需求。但是，由于动圈式发声装置自身的结构特点，其音圈和振膜的偏振问题以及音圈引线的连接问题一直是非常难以解决的技术难题。动圈式发声装置的音圈的两根音圈线需要从音圈上引出并连接到焊盘上，引线会对音圈形成牵引作用力，在一定程度上会妨碍音圈的振动。音圈在振动时存在将音圈引线扯断的风险。而且，引线从音圈引出的位置以及引线的延伸形状均会对音圈的振动造成影响，致使振动系统是不对称的，最终导致音圈发生偏振。现有技术中的一些改进方案中，要么是牺牲了振动特性，要么是BL值不高，造成发声装置的性能不能满足需求。
在一些经过改进的现有技术方案中，动圈式发声装置中提供了用于承载、连接音圈线的结构。但是，音圈线仍容易出现振动上浮、粘接剂脱胶、与承载结构脱离等问题。而且，音圈线在发声装置单体中的悬空高度不容易控制。
因此，有必要对动圈式发声装置进行改进，降低音圈引线断线或与电连接点断开风险；或者，抑制音圈和振膜工作时可能产生的偏振现象。
发明内容
本申请的一个目的是提供一种发声装置单体的新技术方案。
根据本申请的第一方面，提供了一种发声装置单体，包括磁路系统、振动组件和电路板；
所述磁路系统包括磁轭以及设置在磁轭上的中心磁部和边磁部,所述中心磁部和边磁部中的至少一个包含永磁体，所述中心磁部与边磁部之间形成有磁间隙，所述发声装置单体在边磁部的远离磁间隙一侧设置有引线固定件；
所述电路板固定设置在所述发声装置单体中，所述电路板上具有焊盘；
所述振动组件包括振膜和音圈，所述振膜被配置为能够在发声装置单体中上下振动，所述音圈的一端连接在所述振膜上，另一端伸入至磁路系统的磁间隙中，所述音圈上引出有引线，所述引线从所述边磁部的侧面绕过边磁部并穿过所述引线固定件，所述引线固定件被配置为，至少在发声装置单体的高度方向上，从引线的上侧和下侧限制所述引线，所述引线与所述焊盘形成电连接。
可选地，所述引线固定件包括朝向磁轭方向的第一部件和朝向振膜方向的第二部件，所述第一部件和第二部件相对设置，第一部件与第二部件之间留有缝隙，所述缝隙供所述引线穿过。
可选地，所述引线固定件中具有穿孔，所述穿孔供所述引线穿过。
可选地，所述边磁部包括边磁铁和边导磁板，所述边导磁板盖设在所述边磁铁上；
所述边磁铁的远离磁间隙的一侧形成有垫台，所述边导磁板具有延伸到所述边磁铁的远离磁间隙的一侧的弯边；
或者，所述磁轭具有延伸到所述边磁铁的远离磁间隙一侧的垫台，所述边导磁板具有延伸到所述边磁铁的远离磁间隙的一侧的弯边；
所述垫台和弯边分别作为所述第二部件和第一部件。
可选地，所述引线固定件粘接或注塑固定在所述边磁部的远离磁间隙一侧。
可选地，所述引线固定件为弹性件。
可选地，所述第一部件和/或第二部件为弹性件。
可选地，所述第一部件和/或第二部件的顶面包括顶部平面，所述第一部件和/或第二部件在顶部平面的沿着所述边磁部的长度方向的两侧，形成有第一倾斜面，所述引线固定在所述顶部平面处。
可选地，所述边磁部在对应于音圈引出引线的位置形成有开口，所述引线从所述开口处迂回延伸绕至所述边磁部的外侧，所述引线从音圈延伸至引线固定件的线段悬空于发声装置单体中。
可选地，所述音圈上引出有四支引线，其中两支引线的引出位置位于所述音圈的一侧，另外两支引线的引出位置位于所述音圈的另一侧，所述边磁部的远离磁间隙一侧设置有两个引线固定件，位于音圈同一侧的两支引线延伸穿过同一个所述引线固定件上。
可选地，所述振膜的边缘部固定在所述边磁部的上方；
所述振膜在其振动方向上的投影位于所述磁路系统的外部轮廓范围内。
本申请的另一方面提供了一种发声模组，包括模组壳体以及安装在模组壳体内的上述发声装置单体。
本申请的另一方面提供了一种电子终端，包括终端壳体，以及安装在终端壳体内的上述发声装置单体，或者安装在终端壳体内的上述发声模组。
根据本公开的一个实施例，改善了引线在发声装置单体中的连接方式，提高了引线的连接可靠性。
通过以下参照附图对本申请的示例性实施例的详细描述，本申请的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本申请的实施例，并且连同其说明一起用于解释本申请的原理。
图1是本申请实施方式提供的发声装置单体的内部结构的轴测图；
图2是图1的局部放大图；
图3是本申请一种实施方式提供的发声装置单体的内部结构的局部侧面剖视图；
图4是本申请另一种实施方式提供的发声装置单体的内部结构的局部侧面剖视图。
具体实施方式
现在将参照附图来详细描述本申请的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本申请的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本申请及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
本申请提供了一种改进的发声装置单体，该发声装置单体包括磁路系统、振动组件和电路板。该发声装置单体可以应用到发声模组中以及电子终端中。
如图1所示，所述磁路系统包括磁轭以及设置在磁轭上的中心磁部和边磁部，所述边磁部设置在所述中心磁部周围，边磁部与中心磁部之间留有一定间隙，该间隙用于构成磁路系统中的磁间隙。所述中心磁部和边磁部中至少一个包含永磁体。中心磁部和边磁部在磁间隙处形成中心均匀的磁场，用于驱动振动组件振动。本申请并不限制中心磁部和边磁部的具体结构形式，可以根据实际应用的产品结构和性能要求以不同的零部件组合构成所述中心磁部和边磁部。例如，在图3、4所示的实施方式中，所述中 心磁部包括中心磁铁和中心导磁板14，所述边磁部则包括边磁铁12和边导磁板13。在其它的实施方式中，所述中心磁部也可以由T形磁铁构成，所述边磁部则由套设在T形磁铁周围的环形导磁件。特别地，所述磁路系统在边磁部的远离磁间隙一侧设置有引线固定件101，所述引线固定件101用于承载、固定连接延伸至其上或者从其上延伸而过的引线22。
如图1所示，所述电路板3固定设置在所述发声装置单体中，电路板3上具有焊盘31。所述电路板3用于将声音信号传输到振动组件中，进而使振动组件产生振动、发声。
所述振动组件包括振膜和音圈，所述音圈的一端连接在所述振膜上，所述振膜的边缘可以固定在发声装置单体内部。振膜将音圈悬挂在发声装置单体中，音圈远离振膜的一端可以伸入至磁路系统形成的磁间隙中。振膜在音圈的带动下，能够在发声装置单体中沿单体的纵向，上下振动。如图1-4所示，所述音圈21上引出有引线22，所述引线22用于将声音信号导入到音圈21中，引线22与电路板3上的焊盘31电连接，形成信号导通。从所述音圈21上引出的引线22并不是直接沿直线延伸到电路板3上焊盘31所在的区域。在本申请的技术方案中，音圈21位于边磁部的内侧、中心磁部的外围。引线22从音圈21上引出后，先延伸绕过所述边磁部，延伸至边磁部的远离磁间隙的一侧。所述引线固定件设置成，至少能够沿着振膜的上下振动方向，从引线的上侧和下侧对所述引线在发声装置单体中的高度位置进行限制；即，在发声装置单体的高度方向上，从上下两侧限制引线的位置。避免引线固定在发声装置单体中的线段出现随振膜的振动而上下浮动、碰撞的现象。
优选地，所述引线22从边磁部的侧面绕至边磁部的外围，而不是从边磁部的顶部绕过。所述边磁部上可以具有开口、开孔、缝隙等结构，供引线从中穿过进行绕线，本申请不对边磁部的结构进行限制。进一步地，引线22延伸到位于边磁部外围的引线固定件101中，之后再与焊盘31形成电连接。所述引线22可以通过粘接、焊接等方式与引线固定件101固定连接。所述引线固定件101中具有缝隙、穿孔或其它结构，以使引线22能够从引线固定件101中穿过。引线固定件101通过缝隙夹合固定引线22或 者通过穿孔的径向限制作用固定引线22。至少，所述引线固定件能够从引线的上下两侧起到限制位置的作用。
本申请提出的技术方案为引线从音圈引出到与焊盘电连接之间的线段提供了起到固定连接、限制位置作用的引线固定件。相对于现有技术，引线在发声装置单体中的固定连接更加稳定，通过引线固定件对引线的部分线段施加的径向限位作用，引线的高度得到有效限制。进一步地，引线不易因音圈振动而导致引线断线、起伏或与焊盘脱离、错位等问题，显著提高了引线的稳定性。
另一方面，引线从音圈中引出后绕设到边磁部外围，所经过的延伸距离更长，可弹性形变的量更大。这样，引线对音圈造成拉扯作用力相对降低，相应地，音圈振动时也不易造成引线断线等缺陷。发声装置单体的应用可靠性更高。
优选地，所述引线固定件可以包括朝向磁轭方向的第一部件和朝向振膜方向第二部件，即引线固定件通过两个部分共同作用对引线实现限位作用。如图2-4所示，所述第一部件1011和第二部件1012相对设置，两者之间留有缝隙，该缝隙供引线22从中穿过。第一部件1011和第二部件1012之间的夹合作用使引线22固定在缝隙中，不会出现上下浮动的现象。本申请并不对第一部件和第二部件如何形成或设置在发声装置单体中进行限制，可以根据实际应用的要求进行设计。
在另一种可选的实施方式中，所述引线固定件中可以具有穿孔，该穿孔的长度可以与边磁部的长度相配，用于收容引线。所述引线从所述穿孔中穿过，位于穿孔中的引线线段受到穿孔的位置限制，不会发生起伏、脱线、断线等问题。本申请并不限制所述引线固定部如何形成穿孔，可以是在一个整体部件中直接形成穿孔，也可以是通过两个部件相互扣合，通过在相互扣合的表面上形成凹槽构成上述穿孔。
在图2-4所示的实施方式中，所述磁路系统可以包括边磁铁12和边导磁板13，如图3所示，所述边导磁板13盖设在所述边磁铁12上，即边导磁板13与边磁铁12重叠设置。图3中所示的边导磁板13位于边磁铁12下侧，同样属于本申请描述的边导磁板13盖设在边磁铁12上。所述边 磁铁12的远离磁间隙的一侧形成有垫台，所述垫台构成所述第二部件1012。所述垫台可以从边磁铁12的外侧表面进一步向边磁铁的外侧凸出，或者以其它形式构成，本申请不对此进行限制。优选地，所述垫台的顶面与所述边磁铁12的顶面错开，以使垫台能够更准确的对引线形成定位。进一步地，所述边导磁板13具有延伸到所述边磁铁12的远离磁间隙的一侧的弯边，该弯边延伸包围到边磁铁12的外侧表面上。所述弯边的端面可以用于构成所述第一部件1011，从音圈21引出的引线22可以绕至边磁铁12外侧，进而插入垫台与弯边之间的缝隙中。所述垫台和弯边组合构成了本申请所述的引线固定件。
或者，在另一种类似的实施方式中，所述磁轭具有延伸到所述边磁铁的远离磁间隙一侧的上述垫台，所述边导磁板具有延伸到所述边磁铁的远离磁间隙的一侧的弯边，由磁轭和边导磁板分别构成第二部件和第一部件。
可选地，边磁部可以一共包括两个或四个边磁铁12以及边导磁板13，其中，可以仅在两个边磁铁12及边导磁板13的外围形成引线固定件。本申请并不对边磁部具体包括几个边磁铁和边导磁板、哪几个边磁铁和边导磁板外围形成有引线固定件进行限制。在具体实施时，可以具体根据对发声装置单体的性能和形状要求进行配置。在图1、2所示的实施方式中，边磁部包括四个边磁铁12和四个边导磁板13，四个边磁铁12围成近似长方形的结构，且相邻两个边磁铁12之间形成有开口，便于引线22从边磁部内侧引出至外侧。对称分布的两个较短的边磁铁12和边导磁板13的外侧形成有引线固定件101，两个较长的边磁铁12的外侧则没有引线固定件101。引线22从位于磁间隙15中的音圈21中引出，如图3、4所示，经过相邻的两个边磁铁12端部之间的开口绕至边磁铁12外侧的引线固定件101上。
以上实施方式的优点在于，一方面，通过边磁铁或边导磁板形成引线固定件的结构特征简单、加工和装配工艺简单，发声装置单体的生产成本不会明显增加。另一方面，边磁铁或边导磁板位于整个磁路系统的最外围，在其外侧形成引线固定件，能够最大程度的增加引线的延伸长度，减小引线断线的风险。而发声装置单体的整体结构形状和空间占用并不会受到明 显影响。进一步地，边磁铁、边导磁板都是固定在发声装置单体内的稳定部件，引线延伸到其上的引线固定件进行固定，稳定性更高，不易发生晃动等问题。
另一种可选的实施方式是，如图4所示，在所述边磁铁12和边导磁板13的外围直接设置独立的引线固定件101。引线固定件101可以贴附、粘接在边磁铁12和边导磁板13外表面上，或者通过注塑成型的方式固定在其上，本申请并不对具体的连接方式进行限制。进一步地，引线固定部101可以分为相互独立的第一部件1011和第二部件1012，也可以是相互连接的第一部件1011和第二部件1012，本申请也不对此进行限制。图4中所示的第一部件1011和第二部件1012之间相互独立，不具有连接。而图2中所示的第一部件1011和第二部件1012之间则存在相互连接的区域。
另外，对于引线固定件101采用穿孔容纳引线的实施方式，引线固定件可以是一个整体结构，其中具有穿孔即可。引线固定件101整体贴附在边磁部的外表面上即可。
优选地，所述引线固定件可以为弹性件，在引线受到音圈的牵引而具有相对移动的趋势时，具有弹性的引线固定件能够通过弹性形变吸收引线的振动，从而对引线进行保护。进一步地，弹性件与引线之间的接触是柔性接触，避免引线固定件与引线之间发生刚性碰撞、摩擦等现象，进一步降低引线受损、断线等问题。可选地，所述引线固定件可以由泡棉、弹性橡胶等材料制成，之后通过粘接剂粘接或者注塑连接的形式与边磁部形成固定连接。
在引线固定件分为第一部件和第二部件的实施方式中，两者之一可以为弹性件，而另一个则仍然可以有边磁铁或边导磁板或其它不具有良好弹性形变能力的部件制成。例如，第一部件为弹性件，第二部件不是弹性件，两者的端面相互夹合限制引线的位置。或者可选地，第一部件和第二部件均为弹性件。本申请并不对弹性件的使用进行限制。
可选地，在引线固定件分为第一部件和第二部件的实施方式中，第一部件1011和第二部件1012可以包括顶部平面，如图1、2所示，所述顶部平面用于与引线接触，固定、夹合引线。所述引线固定件101的顶部平面 沿着所述边磁部的长度方向延伸。图1、2中所示的边磁部或边磁铁12均呈长方形结构，第一部件1011和第二部件1012的顶部平面则沿着长方形的长轴延伸。引线22绕到边磁部外侧的部分也沿着边磁部的长度方向顺线，夹合在第一部件和第二部件的顶部平面之间。在其它实施方式中，例如边磁部不是呈长方形，而是呈圆弧形，则上述长度方向可以理解为沿着圆弧延伸的方向。
特别地，所述第一部件和/或第二部件的顶面还包括了第一倾斜面。如图1、2所示，所述第一部件1011上还具有第一倾斜面1013，沿着边磁部的长度方向，所述第一倾斜面1013位于顶部平面的两侧。所述顶部平面在第一部件和/或第二部件上位于中间、顶面最高的位置，所述第一倾斜面则位于顶部平面的两侧，高度逐渐降低。所述引线22至少可以与所述顶部平面接触、固定连接。而所述引线对应于第一倾斜面1013的区域则可以悬于第一倾斜面1013上，或者贴附、连接在第一倾斜面1013上，本申请不对此进行限制。如果引线不与第一倾斜面贴附或连接，则悬空的部分能够随着音圈的振动摆动。该特征延长了引线能够摆动的长度，减小了引线与音圈之间相互拉扯的作用力。如果引线与第一倾斜面贴附或连接，则可以增加引线与引线固定件的连接长度，提高引线的稳定性，防止引线发生断线、错位、脱离焊盘的问题。具体引线是否与第一倾斜面连接，可以根据实际应用的情况进行选择。
在所述顶部平面沿着边磁部的长度方向的两侧均对接有第一倾斜面1013的实施方式中，引线22无论是从边磁部两端哪一侧绕至边磁铁12外围，引线22在引线固定件101上都先经过倾斜面，之后再连接到顶部平面。通过这种优选的对第一部件和/或第二部件的顶部的设计方式，可以提高引线固定部的实际应用的适应性，并且提高引线22的可靠性。
优选地，所述引线通过阻尼胶与所述引线固定件的顶面粘接连接。阻尼胶的粘接形式属于柔性连接，引线在阻尼胶的粘接作用下，仍能够相对于引线固定件的顶面具有一定浮动能力。在音圈振动工作时，引线能够一定程度上随着音圈振动，而引线的连接在引线固定件上的线段，在阻尼胶的作用下仍能够轻微浮动。这样，一方面防止引线受到过大的牵引作用力 而发生断线，另一方面阻尼胶能够吸收掉引线上的振动，使得用于连接至焊盘的引线线段不会发生振动，电连接可靠性得到显著提升。进一步地，在上述第一部件和/或第二部件的顶面包括倾斜面和顶部平面的实施方式中，若引线悬于倾斜面上，倾斜面和引线之间也可以涂覆有阻尼胶，从而增强引线的缓冲、吸收振动的性能。
优选地，所述边磁部在对应于音圈引出有引线的位置处形成有开口。如图1-3所示，相邻的两个呈直线型的边磁铁12的端部之间形成上述开口。所述引线22从开口处迂回、弯曲的延伸到边磁部12的外侧，进而贴附在边磁铁12外侧的引线固定件101上。通过这种设计，一方面能够节省空间，另一方面，有效延长了引线从音圈至引线固定件之间的线段的悬空长度。
可选地，所述音圈上引出有四支引线，其中两支引线的引出位置位于所述音圈的一侧，另外两支引线的引出位置位于所述音圈的另一侧。发声装置单体的边磁部的远离磁间隙的一侧设置有两个引线固定件。例如，音圈整体由两根音圈线组合绕制形成，两根音圈线的两个端头分别作为引出的四支引线。音圈整体绕制成矩形环状结构，其中两支引线从音圈的一条短边上引出，另两支引线从音圈的另一条短边上引出。进一步地，位于音圈同一侧的两支引线延伸至同一个所述引线固定件上，两支引线可以环绕着用于形成引线固定件的边磁部，本申请不对此进行限制。
这样一来，音圈的绕线采用两根音圈线共同缠绕，且两根音圈线并联在一起，这样两根引线并联可以在相同阻值的前提下，比单线的线径更细，使得音圈厚度更薄，磁间隙可以更窄，具有更高的BL值，进而提高振动系统的灵敏度，提高发声单体的发声性能。
可选地，所述发声装置单体整体呈矩形结构，如图1、2所示，所述边磁部分为四块直线型的边磁部，所述电路板3则与所述边磁部重叠设置。特别地，电路板3上焊盘31的位置位于具有引线固定件101的边磁部的两端处。这样，引线22经过引线固定件101后能够自然的顺线至焊盘31上，便于形成电连接。可选地，如图1、2所示，一个所述引线固定件101上承载有两条所述引线22。两条引线22的端部分别连接在直线型边磁部的两端的焊盘31上，两条引线22的绕行延伸方向相反。
可选地，为了使磁路系统的磁感线可以聚集在磁间隙15的附近，在中心磁部可以包括中心磁铁和中心导磁板14，中心导磁板14盖设在中心磁铁上，以聚拢磁力线。该中心导磁板14例如可以通过粘接的方式固心磁部上。边磁部可以包括边磁铁和边导磁板13，边导磁板13盖设在边磁铁上。在其它实施方式中，边导磁板还可以采用一体的环状结构，同时粘接在多个边磁铁的表面上。
特别地，本申请提供的发声装置单体不具有用于承载各部件的外壳，所述磁路系统自身即构成发声装置单体的主体结构。所述振膜暴露在发声装置单体的顶部，所述振膜的边缘固定在边磁部上方，音圈连接在振膜的中心区域。振膜在其自身的振动方向上的投影位于磁路系统的外轮廓范围内。通过振膜的悬挂作用，音圈远离振膜的一端能够悬于所述磁间隙中。所述磁路系统的外表面直接暴露在外，该发声装置单体可以通过磁路系统直接装配在发声装置模组或者电子终端中，无需再额外配置壳体。
这种发声单体在应用的时候，可以直接安装在模组壳体中，以形成发声模组。还可以是，将该发声单体直接安装到终端壳体内，形成电子终端。或者是以发声模组的形式安装在终端壳体内，形成电子终端，在此不再具体说明。本申请提供了一种发声模组，其中包括模组壳体和上述发声装置单体，发声装置单体设置在模组壳体中。本申请还提供了一种电子终端，其中包括终端壳体，终端可以中设置有发声装置单体，或者设置有承载了发声装置单体的发声模组。
虽然已经通过例子对本申请的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本申请的范围。本领域的技术人员应该理解，可在不脱离本申请的范围和精神的情况下，对以上实施例进行修改。本申请的范围由所附权利要求来限定。

Claims (13)

  1. 一种发声装置单体，其特征在于，包括磁路系统、振动组件和电路板；
    所述磁路系统包括磁轭以及设置在磁轭上的中心磁部和边磁部,所述中心磁部和边磁部中的至少一个包含永磁体，所述中心磁部与边磁部之间形成有磁间隙，所述发声装置单体在边磁部的远离磁间隙一侧设置有引线固定件；
    所述电路板固定设置在所述发声装置单体中，所述电路板上具有焊盘；
    所述振动组件包括振膜和音圈，所述振膜被配置为能够在发声装置单体中上下振动，所述音圈的一端连接在所述振膜上，另一端伸入至磁路系统的磁间隙中，所述音圈上引出有引线，所述引线从所述边磁部的侧面绕过边磁部并穿过所述引线固定件，所述引线固定件被配置为，至少在发声装置单体的高度方向上，从引线的上侧和下侧限制所述引线，所述引线与所述焊盘形成电连接。
  2. 根据权利要求1所述的发声装置单体，其特征在于，所述引线固定件包括朝向磁轭方向的第一部件和朝向振膜方向的第二部件，所述第一部件和第二部件相对设置，第一部件与第二部件之间留有缝隙，所述缝隙供所述引线穿过。
  3. 根据权利要求1或2所述的发声装置单体，其特征在于，所述引线固定件中具有穿孔，所述穿孔供所述引线穿过。
  4. 根据权利要求1-3任意之一所述的发声装置单体，其特征在于，所述边磁部包括边磁铁和边导磁板，所述边导磁板盖设在所述边磁铁上；
    所述边磁铁的远离磁间隙的一侧形成有垫台，所述边导磁板具有延伸到所述边磁铁的远离磁间隙的一侧的弯边；
    或者，所述磁轭具有延伸到所述边磁铁的远离磁间隙一侧的垫台，所述边导磁板具有延伸到所述边磁铁的远离磁间隙的一侧的弯边；
    所述垫台和弯边分别作为所述第二部件和第一部件。
  5. 根据权利要求1-4任意之一所述的发声装置单体，其特征在于，所述引线固定件粘接或注塑固定在所述边磁部的远离磁间隙一侧。
  6. 根据权利要求1-5任意之一所述的发声装置单体，其特征在于，所述引线固定件为弹性件。
  7. 根据权利要求1-6任意之一所述的发声装置单体，其特征在于，所述第一部件和/或第二部件为弹性件。
  8. 根据权利要求1-7任意之一所述的发声装置单体，其特征在于，所述第一部件和/或第二部件的顶面包括顶部平面，所述第一部件和/或第二部件在顶部平面的沿着所述边磁部的长度方向的两侧，形成有第一倾斜面，所述引线固定在所述顶部平面处。
  9. 根据权利要求1-8任意之一所述的发声装置单体，其特征在于，所述边磁部在对应于音圈引出引线的位置形成有开口，所述引线从所述开口处迂回延伸绕至所述边磁部的外侧，所述引线从音圈延伸至引线固定件的线段悬空于发声装置单体中。
  10. 根据权利要求1-9任意之一所述的发声装置单体，其特征在于，所述音圈上引出有四支引线，其中两支引线的引出位置位于所述音圈的一侧，另外两支引线的引出位置位于所述音圈的另一侧，所述边磁部的远离磁间隙一侧设置有两个引线固定件，位于音圈同一侧的两支引线延伸穿过同一个所述引线固定件上。
  11. 根据权利要求1-10任意之一所述的发声装置单体，其特征在于，
    所述振膜的边缘部固定在所述边磁部的上方；
    所述振膜在其振动方向上的投影位于所述磁路系统的外部轮廓范围内。
  12. 发声模组，其特征在于，包括模组壳体以及安装在模组壳体内的如权利要求1-11任一项所述的发声装置单体。
  13. 电子终端，其特征在于，包括终端壳体，以及安装在终端壳体内的根据权利要求1至11任一项所述的发声装置单体，或者安装在终端壳体内的根据权利要求12所述的发声模组。
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CN114257926B (zh) * 2021-11-30 2024-01-02 歌尔股份有限公司 发声器件和电子设备

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