WO2019205660A1 - 发声单体、发声模组及电子终端 - Google Patents

发声单体、发声模组及电子终端 Download PDF

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Publication number
WO2019205660A1
WO2019205660A1 PCT/CN2018/120392 CN2018120392W WO2019205660A1 WO 2019205660 A1 WO2019205660 A1 WO 2019205660A1 CN 2018120392 W CN2018120392 W CN 2018120392W WO 2019205660 A1 WO2019205660 A1 WO 2019205660A1
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WO
WIPO (PCT)
Prior art keywords
voice coil
magnetic circuit
edge
circuit portion
incoming
Prior art date
Application number
PCT/CN2018/120392
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
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
Priority to US17/051,035 priority Critical patent/US11310603B2/en
Publication of WO2019205660A1 publication Critical patent/WO2019205660A1/zh

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Classifications

    • 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
    • H04R9/046—Construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details 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
    • H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin
    • 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 invention relates to the field of electroacoustic conversion, and more particularly, to a sound emitting unit; the present invention also relates to a sound emitting module and an electronic terminal using the sound emitting unit.
  • a speaker is an important acoustic component in an electronic device that is a transducer that converts an electrical signal into an acoustic signal.
  • the existing speaker module includes a housing, and a magnetic circuit system and a vibration system disposed in the housing.
  • the magnetic circuit system of the speaker may employ a single magnetic circuit structure, a dual magnetic circuit structure, a three magnetic circuit structure, or other structures well known to those skilled in the art.
  • the traditional voice coil is wound by a voice coil, and the voice coil wire can be wound around the voice coil bobbin to form a voice coil.
  • the voice coil line forms an incoming end and an outgoing end on the voice coil bobbin, and the infused line end and the outgoing end electrically connect the voice coil to the external circuit to feed the audio signal to the voice coil through an external circuit.
  • the voice coil of this structure forms a conductive loop through the incoming end and the outgoing end, which makes the internal resistance of the voice coil relatively large.
  • a sounding unit comprising a magnetic circuit system and a vibration system, a circuit board comprising a yoke and a central magnetic circuit portion and a side magnetic circuit disposed on the yoke a portion, the at least one of the central magnetic circuit portion and the side magnetic circuit portion includes a permanent magnet, and a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion;
  • the vibration system includes a diaphragm and a voice coil. One end of the voice coil is connected to the diaphragm, and the other end is inserted into the magnetic gap of the magnetic circuit system;
  • the voice coil is formed by two voice coils wound together, and the two ends of each voice coil line respectively form an incoming end and an outgoing end; the leading positions of the two incoming ends are located in the sound.
  • the two sides of the circle are arranged diagonally, and the lead-out positions of the two outlet ends are located on opposite sides of the voice coil, arranged diagonally; the two incoming ends and the two outgoing ends respectively correspond to the circuit board
  • the pads are electrically connected, and the internal circuitry of the board is configured to electrically connect the two incoming ends together to electrically connect the two outgoing ends together.
  • one of the incoming ends is symmetrical with respect to one of the adjacent outgoing ends with respect to the first axis of the voice coil, and the other adjacent outgoing end is symmetrical with respect to the second axis of the voice coil;
  • the first axis of the ring is perpendicular to the second axis of the voice coil;
  • the other incoming end is symmetrical with respect to the one of the adjacent outgoing ends with respect to the second axis of the voice coil, and the other adjacent outgoing end is symmetrical with respect to the first axis of the voice coil.
  • the voice coil has a rectangular shape, and the wire end is adjacent to one end of the same voice coil wire on the long side.
  • the voice coil has a rectangular shape, and the end of the line and the end of the line adjacent to the short side are both ends of the same voice coil.
  • the edge magnetic circuit portion forms an opening at a position corresponding to the two incoming ends and the two outgoing ends
  • the circuit board forms a pad at each of the opening positions corresponding to the side magnetic circuit portions
  • the two incoming ends and the two outgoing ends are drawn in an S shape at respective opening positions.
  • the edge magnetic circuit portion forms an opening at a position corresponding to the two incoming ends and the two outgoing ends
  • the circuit board forms a pad at each of the opening positions corresponding to the side magnetic circuit portions
  • Two incoming ends and two outgoing ends respectively pass through respective corresponding openings to the outside of the corresponding side magnetic circuit portions, and extend from the outer side of the corresponding side magnetic circuit portions to the corresponding adjacent pads. Soldering on the adjacent pads, the two incoming ends and the two outgoing ends are respectively soldered on different pads, and the solder pads of the two incoming ends are diagonally arranged.
  • the pads soldered at the two outlet ends are arranged diagonally.
  • the distance between the at least one incoming end and the corresponding side magnetic circuit portion thereof gradually increases from the magnetic gap to the outer side of the magnetic circuit portion.
  • the distance between the at least one outlet end and the corresponding side magnetic circuit portion thereof gradually decreases from a direction close to the magnetic gap to a position outside the side magnetic circuit portion.
  • a bearing platform facing the yoke is formed outside a portion of the edge of the side magnetic circuit portion
  • a first portion of at least one of the two incoming ends and two outgoing ends is fixed on the carrying platform; the first portion is a portion of the incoming end and the outgoing end wound to the outside of the corresponding side magnetic circuit portion .
  • the side magnetic circuit portion includes a side magnet and an edge magnetic conductive plate disposed on an upper surface of the side magnet;
  • the outer side of the edge of the side magnet extends outward to form the carrying platform
  • the outer side of the edge of the side magnetic conducting plate is bent in the direction of the yoke to extend outside the side magnet to form the carrying platform.
  • a fixing member is disposed outside a partial edge of the side magnetic circuit portion, the fixing member includes a first member facing the diaphragm direction and a second member facing the yoke direction, the first member Opposite to the second member and spaced apart by a gap;
  • At least one of the two incoming ends and the two outgoing ends are interposed in the slit and pass through the slit and the corresponding adjacent pad when being wound to the outside of the corresponding side magnetic circuit portion connection.
  • the fixing member is an elastic member.
  • a receiving groove is formed on a side of the side magnetic circuit portion away from the magnetic gap, and the circuit board is hollow and disposed in the receiving groove.
  • the side magnetic circuit portion includes a side magnet and an edge magnetic conductive plate disposed on an upper surface of the side magnet;
  • the side magnetic conductive plate is formed with a recessed portion on a side opposite to the side magnet, the recessed portion is located at a side edge of the side magnetic conductive plate away from the magnetic gap, and the recessed portion constitutes the receiving groove;
  • the side magnet is formed with a concave portion on a side opposite to the side magnetic conductive plate, the concave portion is located at a side edge of the side magnet away from the magnetic gap, and the concave portion constitutes the receiving groove;
  • a recessed portion is formed on a side opposite to the side magnetic conductive plate and the side magnet, and the recessed portion is located at a side edge of the side magnetic conductive plate and the side magnet away from the magnetic gap, and the side magnetically
  • the recessed portions of the plate and the side magnets together constitute the receiving groove.
  • an edge of the diaphragm is fixed above the side magnetic circuit portion
  • the projection of the diaphragm in its direction of vibration is located within the outer contour of the magnetic circuit system.
  • the side magnetic circuit portion includes a side magnet and an edge magnetic conductive plate disposed on an upper surface of the side magnet, and an edge 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 of the diaphragm is fixed on the gasket.
  • the edge of the gasket protrudes upwardly with a flange, and an edge of the diaphragm is fixed to the flange.
  • a flange is protruded upward from an edge of the edge magnetic conductive plate, and an edge of the diaphragm is fixed on the flange.
  • a sound emitting module comprising a module housing and a sounding unit mounted in the module housing.
  • an electronic terminal comprising a terminal housing, and a sound emitting unit mounted in the terminal housing or a sound emitting module mounted in the terminal housing.
  • 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, more than the wire diameter of the single wire. Fine, the voice coil thickness is thinner, the magnetic gap can be narrower, and has a higher BL value, thereby improving the sensitivity of the vibration system and improving the sounding performance of the sounding unit.
  • the winding of the voice coil is wound by two voice coil wires, 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.
  • Figure 1 is a cross-sectional view of a sound emitting monomer of the present invention.
  • Figure 2 is a bottom plan view of the sound emitting unit of Figure 1 with the yoke removed.
  • Fig. 3 is a bottom plan view showing the yoke removed in another embodiment.
  • Figure 4 is a partial enlarged view of the first embodiment of the magnetic circuit portion in the sounding unit.
  • Fig. 5 is a partial enlarged view of a second embodiment of a magnetic circuit portion in a sound emitting unit.
  • Fig. 6 is a partially enlarged view showing a third embodiment of the magnetic circuit portion in the sound emitting unit.
  • the present invention provides an audible unit that can be applied to an audible module as well as to an electronic terminal.
  • the sounding unit of the present invention includes a magnetic circuit system and a vibration system.
  • the magnetic circuit system may employ a single magnetic circuit structure, a dual magnetic circuit structure or a multi magnetic circuit structure well known to those skilled in the art.
  • the magnetic circuit system includes a yoke 1 and a central magnetic circuit portion and a side magnetic circuit portion disposed on the yoke 1, and at least one of the central magnetic circuit portion and the side magnetic circuit portion includes A permanent magnet, a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion.
  • the side magnetic circuit portion may be integrally formed with the yoke 1 as a side wall portion formed at the edge of the yoke 1, and the central magnetic circuit portion may be a permanent magnet disposed at a central portion of the yoke 1 with the yoke 1
  • the side wall portion constitutes a magnetic gap of the magnetic circuit system.
  • the yoke 1 may have a flat plate structure or a basin structure
  • the central magnetic circuit portion includes a center magnet 2 mounted in a central region of the yoke 1
  • the side magnetic circuit portion includes a side magnet distributed at a side of the center magnet 2 3.
  • the side magnets 3 may be provided with two; of course, four may be provided, distributed around the center magnet 2, and a magnetic gap of the magnetic circuit system is formed between the four side magnets 3 and the center magnet 2.
  • the four side magnets 3 enclose an approximately rectangular structure, and an opening is formed between the adjacent two side magnets 3 to facilitate the extraction of the subsequent voice coil wires.
  • a central magnetic conductive plate 4 may be disposed on the upper surface of the central magnet 2, and the central magnetic conductive plate 4 may be fixed to the central magnet by, for example, bonding. 2 on.
  • An edge magnetic conductive plate 5 may be disposed on the upper surface of the side magnet 3, wherein the side magnetic conductive plates 5 may be provided with four, which may be respectively fixed to the four side magnets 3 by bonding. It is also possible that the side magnetic conducting plate 5 has an integral annular structure and is bonded to the upper surface of the four side magnets 3.
  • the vibration system of the present invention includes a diaphragm and a voice coil 7 mounted on the diaphragm.
  • the diaphragm of the present invention includes a connecting portion 50 at the edge, a vibrating portion 52 at the center, and a folded portion 51 between the connecting portion 50 and the vibrating portion 52.
  • the connecting portion 50 of the diaphragm edge can be supported above the side magnetic conducting plate 5 by the gasket 8, and of course the gasket 8 can also be disposed on the yoke 1.
  • the diaphragm can also adopt a planar diaphragm, which is common knowledge of those skilled in the art and will not be described in detail herein.
  • the diaphragm is connected to the washer 8 through the connecting portion 50 at the edge thereof, and the vibrating portion 52 in the central portion is the main sound emitting region of the diaphragm, and the vibrating portion 52 can be activated by the voice coil 7 to make the vibrating portion 52 improve. Sensitivity.
  • the upper end of the voice coil 7 of the present invention can be directly connected to the lower end of the vibrating portion 52. It is also possible that the vibrating portion 52 is provided with a hollow structure, and the hollow structure is covered by the provided dome structure 6. At this time, the upper end of the voice coil 7 may be connected to a region where the vibrating portion 52 is not hollowed out, or may be directly connected to the lower end of the dome structure 6. The other end of the voice coil 7 needs to protrude into the magnetic gap of the magnetic circuit system, so that the voice coil 7 vibrates under the action of magnetic lines of force.
  • the voice coil 7 is formed by winding two voice coils side by side at the same time, that is, the voice coil 7 of the present invention is wound by two voice coil wires.
  • the voice coil wire can be made of an enameled wire well known to those skilled in the art.
  • the two voice coils are arranged side by side, and can be wound layer by layer at the same time by the winding machine, so that each layer is wound on the line, and the two voice coil lines are arranged at intervals.
  • the number of layers wound on the voice coil 7 can be determined according to design requirements, such as two or more layers.
  • each voice coil wire When each voice coil wire is wound to form the voice coil 7, the two ends form an incoming end and an outgoing end, wherein the incoming end is used for the introduction of an electrical signal, and the outgoing end is used for the extraction of an electrical signal to form a loop.
  • the two incoming ends and the two outgoing ends need to be respectively taken out from the voice coil 7, that is, the voice coil 7 has four lead ends, and the four lead ends are led out from four different positions of the voice coil 7, which This makes it possible to design the four lead ends into a balanced symmetrical structure to solve the polarization problem of the vibration system.
  • 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 lead-out positions of the two incoming ends are located on both sides of the voice coil, and are arranged diagonally.
  • the lead-out positions of the two outgoing ends are located on both sides of the voice coil and are arranged diagonally.
  • the two incoming ends and the two outgoing ends may be respectively referred to as a first incoming end 70, a second incoming end 72, a first outgoing end 71, and a second outgoing end 73.
  • the first incoming end 70 and the second incoming end 72 are located at diagonal positions of the voice coil 7, and the leading positions of the first outgoing end 71 and the second outgoing end 73 are located at the other diagonal position of the voice coil 7.
  • the winding of the voice coil is wound by two voice coil wires, 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 leading positions of the first incoming end 70 and the second incoming end 72 are located at the upper left corner and the lower right corner of the voice coil 7, and the leading positions of the first outgoing end 71 and the second outgoing end 73 are located at the sound.
  • Circle 7 is in the upper right corner and lower left corner position.
  • the first incoming end 70, the second incoming end 72, the first outgoing end 71, and the second outgoing end 73 can be led, for example, from four corner positions of the voice coil 7, the four lead ends being four from the voice coil 7
  • the short side of the corner area is taken out, and can also be drawn from the long side of the four corner areas, and is not specifically limited herein.
  • the lead-out positions of the first incoming end 70, the second incoming end 72, the first outgoing end 71, and the second outgoing end 73 are located at four corner positions of the voice coil 7, and the first incoming end 70 and the first outgoing end 71 adjacent to the long side of the voice coil 7, the first incoming end 70 and the second outgoing end 73 are adjacent on the short side of the voice coil 7; the second incoming end 72 and the first outgoing end 71 are The short side of the voice coil 7 is adjacent to each other, and the second line end 72 and the second line end 73 are adjacent to each other on the long side of the voice coil 7.
  • the opening formed between the adjacent two side magnets 3 corresponds to the four corner regions of the voice coil 7, so that the four lead terminals can be led out from the respective opening positions and connected to the corresponding pads of the circuit board.
  • the circuit board may be an FPCB board 9, see FIG.
  • the FPCB board 9 may be bonded to the gasket 8 (or the support shell) or may be bonded to the side magnetic pole plate 5 or the side magnet 3, which is not limited herein.
  • the receiving groove 12 is formed on a side of the side magnetic circuit portion away from the magnetic gap. Referring to FIG. 1, a recessed receiving groove 12 is formed in a portion of the magnetic circuit portion adjacent to the peripheral edge, and the receiving groove 12 extends around the periphery of the magnetic circuit system for one turn.
  • a circuit board 4 having a hollow ring shape is disposed in the accommodating groove 2.
  • Such a structure makes the overall shape of the sounding unit not become thicker and wider due to the provision of the circuit board.
  • the circuit board is completely embedded in the magnetic circuit system.
  • the sounding monomer provided by the invention has a more compact structure by designing the accommodating groove, and the space occupied by the space is reduced as much as possible without impairing the performance of the product.
  • the accommodating groove 12 located at the periphery of the side magnetic circuit portion occupies a part of the space of the magnetic circuit system, that is, the magnetic circuit system forms a part of the hollow at the periphery.
  • the hollow portion of the magnetic circuit system cannot be magnetized.
  • the magnetic induction line is concentrated toward the side of the magnetic circuit portion close to the magnetic gap, and the magnetic sensing line is received from the receiving groove 12. Pass through the inner magnetic circuit system.
  • the magnetic field strength inside the magnetic circuit system is improved, and the magnetic field strength at the magnetic gap in the magnetic circuit system can be effectively improved.
  • the response sensitivity is improved and the acoustic performance is significantly improved.
  • the side magnetic conductive plate 5 is formed with a recessed portion on a surface opposite to the side magnet 3, and the recessed portion is formed after the magnetic conductive plate 5 and the side magnet 3 are attached to each other.
  • the receiving groove 12 is described.
  • the recessed portion on the side magnetic conductive plate 5 is preferably close to the outer edge of the side magnetic conductive plate 5, that is, the depressed portion is located on the side of the side magnetic conductive plate 5 away from the central magnetic circuit portion and the magnetic gap, so that the magnetic induction line is close to the center.
  • One side of the magnetic circuit portion is gathered.
  • a recess may also be formed on the side surface of the side magnet 3 opposite the side magnetic plate 5.
  • the depressed portion constitutes the above-described receiving groove 12.
  • the depressed portion is preferentially located on the side of the side magnet 3 away from the central magnetic circuit portion and the magnetic gap so that the magnetic induction line is gathered toward the side close to the central magnetic circuit portion.
  • the side magnet 3 and the side magnetic conductive plate 5 are formed with recessed portions on opposite sides, the positions of the recessed portions of the two are corresponding to each other, and the two recessed portions are combined to constitute the above-mentioned accommodation.
  • Slot 12. The depressed portion is preferentially located on the side of the side magnet 3 and the side magnetic conductive plate 5 away from the central magnetic circuit portion and the magnetic gap so that the magnetic induction line is gathered toward the side close to the central magnetic circuit portion.
  • the FPCB board 9 forms a pad at each corresponding opening position, for example, a first pad 91 distributed adjacent to the first line end 70, a second pad 93 distributed adjacent to the first line end 71, and a second exit line.
  • the third pad 90 of the end 73 is distributed, and the fourth pad 92 is distributed adjacent to the second incoming end 72.
  • the lead ends may be aligned along the short sides of the voice coil 7.
  • the opening formed between the adjacent two adjacent side magnets 3 is wound around the outer side of the corresponding side magnet 3, and from the side magnet
  • the outer meandering of 3 extends to a third land 90 that is adjacent to the second outlet end 73.
  • the opening formed between the adjacent two adjacent side magnets 3 is wound around the outer side of the corresponding side magnet 3, and from the side magnet
  • the outer meandering of 3 extends to the first land 91 adjacent to the first incoming end 70.
  • the first outlet end 71 and the second incoming end 72 are also taken out in this manner, and will not be specifically described herein.
  • the distance between the at least one incoming end and the corresponding side magnetic circuit portion thereof is from the portion close to the magnetic gap to the close magnetic side.
  • the portion outside the road portion is gradually reduced; and/or, when the two outlet ends respectively pass through the respective corresponding openings, the distance between the at least one outlet end and the corresponding side magnetic circuit portion thereof, from the portion close to the magnetic gap to the near side magnetic The portion outside the road portion is gradually reduced.
  • the first incoming end 70 when the first incoming end 70 is taken out from the corner position of the voice coil 7 and passed through an opening formed between the adjacent two adjacent side magnets 3, the first incoming end 70 is short.
  • the distance of the side magnets 3 at the edge position is gradually reduced from the vicinity of the magnetic gap to the direction of the outer side of the side magnet 3 corresponding thereto.
  • the second incoming end 72, the first outgoing end 71, and the second outgoing end 73 are also extracted in this manner, and will not be specifically described herein.
  • the length of the four lead-out ends can be increased in a small space, so that the stress at the time of the lead vibration can be reduced, and the vibration effect of the vibration system can be improved.
  • a bearing platform 10 facing the yoke 1 is formed outside a portion of the edge of the magnetic circuit portion, and the bearing surface of the carrier 10 opposite to the yoke 1 is used for carrying and fixing the connection to Leads that extend over or over it.
  • the outer side edge portion of the side magnetic circuit portion refers to the side of the side magnetic circuit portion away from the center 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 outer edge of the side magnet 3 extends outward to form a pad which is placed on the side of the side magnet body away from the magnetic gap, and the pad constitutes the stage 10.
  • the present invention does not limit the form in which the pad is formed on the side magnet 3.
  • the top surface of the pad is lower than the top surface of the side magnet body to enable the pad to more accurately position the leads.
  • the side magnetic circuit portion may comprise a total of two or four side magnets 3, wherein the carrier can be formed only on the periphery of the two side magnets 3.
  • the present invention does not limit the side magnetic circuit portion specifically including several side magnets, and which side magnets are formed with a carrying base. In the specific implementation, it can be configured according to the performance and shape requirements of the sounding monomer.
  • the carrier 10 is formed on the outer side of the side magnets 3 at the two short side positions which are symmetrically distributed.
  • the edge magnetic conductive plate 5 has a flange extending to the outside of the side magnet 3, and the flange extends to surround the outer surface of the side magnet 12, and constitutes the above-mentioned carrying platform. 10.
  • 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 conducting plate are simple, the processing and assembly process are simple, and the production cost of the sounding 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 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 invention is not limited to the necessity of forming a carrier on an edge magnet or a side magnetically permeable plate.
  • the side magnetic circuit portion is formed of a ring-shaped magnetically permeable member, or the side magnetic circuit portion is made of a magnetically permeable side wall member.
  • the above-described carrier can also be formed on the peripheral surface of these structures.
  • the portion of the first incoming end 70 wound to the outside of the side magnet 3 (which may be referred to as the first portion) may be fixed at
  • the carrier 10 can be fixed by, for example, bonding or welding.
  • the first outlet end 71, the second inlet end 72, and the second outlet end 73 can also be taken out in this manner, and will not be specifically described herein.
  • the fixed connection of the lead wire in the sounding unit is more stable, and it is difficult to cause the lead wire to be broken, the contact with the pad, and the misalignment 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 circuit 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.
  • a fixing member 11 is provided on the outer side of a portion of the edge of the side magnetic circuit portion for supporting and fixing the lead to which the extension extends or extends.
  • the outer side edge portion of the side magnetic circuit portion refers to the side of the side magnetic circuit portion away from the center 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 fixing member 11 is disposed to limit the height position of the lead wire in the sound emitting unit from at least the upper side and the lower side of the lead wire along the upper and lower vibration directions of the diaphragm; that is, in the height direction of the sound emitting unit, Limit the position of the leads from the top and bottom sides.
  • the line segment in which the lead wire is fixed in the sounding monomer is prevented from floating up and colliding with the vibration of the diaphragm.
  • the first incoming end 70 is wound around the periphery of the side magnetic circuit portion and extends into the fixing member 11 located at the periphery of the side magnetic circuit portion, and then electrically connected to the third pad 90.
  • the first wire end 70 can be fixedly connected to the fixing member 11 by bonding, welding or the like.
  • the fixture 11 has a slit, perforation or other structure therein to enable the first wire end 70 to pass through the fixture 11.
  • the fixing member 11 fixes the first inlet end 70 by slit clamping or fixes the first inlet end 70 by radial restriction of the perforation. At least, the fixing member 11 can function as a restriction position from the upper and lower sides of the first inlet end 70.
  • the first outlet end 71, the second inlet end 72, and the second outlet end 73 can also be taken out in this manner, and will not be specifically described herein.
  • the technical solution proposed by the present invention provides a lead wire fixing member which serves as 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 circuit 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 vocal monomer is more reliable.
  • the independent fixing member 11 is directly disposed at the outer periphery of the side magnet 3 and the side magnetic conducting plate 5.
  • the fixing member 11 can be attached or bonded to the outer surface of the side magnet 3 and the side magnetic conductive plate 5, or can be fixed thereto by injection molding, and the present invention does not limit the specific connection manner.
  • the fixing portion 11 can be divided into a first member 1011 facing the diaphragm direction and a second member 1012 facing the yoke direction.
  • the first component 1011 and the second component 1012 may be independent of each other or may be connected to each other, and the present invention is not limited thereto.
  • the first member 1011 and the second member 1012 are disposed opposite to each other with a gap therebetween.
  • the first member 1011 and the second member 1012 shown in Fig. 6 are independent of each other and have no connection relationship.
  • the first member 1011 and the second member 1012 may be a unitary structure, and the gap between the two is a perforation of the fixing member 11.
  • the fixing member 11 is entirely attached to the outer surface of the side magnetic circuit portion.
  • the first incoming end 70 When the first incoming end 70 is wound to the outer side of the corresponding side magnetic circuit portion, it is sandwiched in the slit of the fixing member and electrically connected to the corresponding pad through the slit.
  • the fixing member 11 may be an elastic member, and the elastic fixing member 11 can absorb the vibration of the lead wire by elastic deformation to protect the lead wire when the lead wire is pulled by the voice coil to have a relative movement tendency. Further, 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 magnetic circuit portion by an adhesive bonding or an injection-molded connection.
  • the two incoming ends and the two outgoing ends pass through respective openings and are soldered to adjacent pads. That is, after the first incoming end 70 is taken out from the corner position of the voice coil 7, the opening formed between the adjacent two adjacent side magnets 3 is connected to the first adjacent to the first incoming end 70. a pad 91; the second outlet end 73 is drawn from the corner position of the voice coil 7, passes through an opening formed between the adjacent two side magnets 3, and is connected to the second adjacent end 73. Three pads on the 90. The first outlet end 71 and the second incoming end 72 are also taken out in this manner, and will not be specifically described herein.
  • the two incoming ends and the two outgoing ends are drawn in an S shape at respective opening positions, and the length of the four leading ends suspended in the small space can also be increased, thereby being The stress when the small lead vibrates improves the vibration effect of the vibration system.
  • the FPCB board 9 of the present invention electrically connects the two incoming ends together by their internal circuits, electrically connecting the two outgoing ends together.
  • an incoming pad 94 and an outgoing pad 95 are provided on the FPCB board 9, and the incoming pad 94 and the outgoing pad 95 are used for an external circuit.
  • the FPCB board 9 commonly connects the first pad 91 and the fourth pad 92 to the input pad 94 through its internal circuit, and connects the second pad 93 and the third pad 90 to the outgoing line through its internal circuit.
  • On pad 95 This allows the two voice coil wires to be connected in parallel, thereby reducing the internal resistance of the entire voice coil 7.
  • the voice coil 7 of the present invention can entangle more voice coil lines under the premise of the same internal resistance, thereby improving the sensitivity of the vibration system and improving the sound generation performance of the sounding unit. .
  • the four terminals can be arranged in a symmetrical structure.
  • one of the incoming ends is symmetrical with one of the adjacent outgoing ends with respect to the first axis of the voice coil, and the other incoming end is opposite to the other adjacent outgoing end.
  • the first axis of the ring is symmetrical, and the first axis may be, for example, a central axis extending in the short side direction of the voice coil 7. Referring to the view directions of FIG. 1, FIG. 2, and FIG.
  • the first incoming end 70 and the first outgoing end 71 are adjacent on the long side of the voice coil 7, and the first incoming end 70 and the first outgoing end 71 are adjacent. Symmetrical distribution on the left and right sides of the voice coil 7. Based on the same principle, the second incoming end 72 and the second outgoing end 73 are adjacent on the other long side of the voice coil 7, and the second incoming end 72 and the second outgoing end 73 are symmetrically distributed in the voice coil 7 The left and right sides. Through this symmetrical structural design, the stress generated by each of the terminals at the time of vibration is also symmetrical, so that the polarization of the entire vibration system can be suppressed.
  • symmetry refers not only to the symmetry of the lead-out position from the lead-out position on the voice coil 7, but also to the symmetry of the shape of the end line.
  • one of the inlet ends is symmetrical with respect to one of the adjacent outlet ends with respect to the first axis of the voice coil, and the other adjacent outlet end is symmetrical with respect to the second axis of the voice coil;
  • the line end is symmetrical with respect to one of the adjacent outlet ends with respect to the first axis of the voice coil, and the other adjacent outlet end is symmetrical with respect to the second axis of the voice coil.
  • the second axis is a different axis from the first axis and is perpendicular to each other.
  • the first axis may be, for example, a central axis extending in the short side direction of the voice coil 7, and the second axis may be a central axis extending in the longitudinal direction of the voice coil 7.
  • the first incoming end 70 and the second outgoing end 73 are symmetrically distributed on the upper and lower sides of the voice coil 7; the first incoming end 70 and the first outgoing end 71 are symmetrically distributed around the voice coil 7 On both sides.
  • the second incoming end 72 is symmetrically distributed on the upper and lower sides of the voice coil 7 with the first outgoing end 71; the second incoming end 72 and the second outgoing end 73 are symmetrically distributed on the left and right sides of the voice coil 7.
  • the first incoming end 70 and the second incoming end 72 are symmetric with respect to the center of the voice coil 7.
  • This symmetrical structure can greatly suppress the polarization problem of the entire vibration system due to the change of the stress at the leading end of the vibration. From a single point of view, when the generating monomer is applied to a specific product, since the polarization problem of the vibration system is suppressed, the maximum amplitude of the vibration system can be improved by adjustment, thereby improving the user experience.
  • the line entrance end and one of the outlet ends adjacent to each other on the short side are the both end portions of the same voice coil line. That is, the first incoming end 70 and the second outgoing end 73 may be both ends of the same voice coil. The second incoming end 72 and the first outgoing end 71 may be both ends of the same voice coil.
  • the two voice coils are wound, for example, in a counterclockwise manner.
  • One of the voice coil wires starts from the position of the first wire end 70, and after winding through an integral circle, a short wire is wound to form a second wire end 73.
  • the other voice coil line starts from the position of the second line end 72, and after winding through an integral circle, a short side is wound to form the first line end 71.
  • the entry end and the one end adjacent to the long side are the both ends of the same voice coil. That is, the first line end 70 and the first line end 71 are respectively the opposite ends of the same voice coil line.
  • the second incoming end 72 and the second outgoing end 73 are both end portions of the same voice coil.
  • the two voice coils are wound, for example, in a counterclockwise manner.
  • One of the voice coil wires starts from the position of the first wire end 70, and after winding through an integral circle, the first wire end 71 is formed by winding 3/4 turns.
  • the other voice coil line starts from the position of the second line end 72, and after winding through an integral circle, the second line end 73 is formed by winding 3/4 turns.
  • the connecting portion 50 of the diaphragm edge is fixed above the side magnetic circuit portion, and the projection of the diaphragm in the vibration direction thereof is located within the outer contour of the magnetic circuit system.
  • This structure is attached to the housing with a conventional diaphragm such that the projection of the diaphragm in its vibration direction is different outside the outer contour of the magnetic circuit system.
  • the edge of the diaphragm may be fixed to the upper surface of the side magnetic conductive plate 5.
  • the edge of the side magnetic conductive plate 5 protrudes upward with a flange, and the edge portion of the diaphragm Can be fixed to the flange.
  • the edge of the upper surface of the side magnetic conducting plate 5 is provided with a gasket 8 on which the edge of the diaphragm is fixed.
  • the edge of the gasket 8 is protruded upwardly with the flange 80, and the edge of the diaphragm is fixed on the flange 80.
  • a relief area is formed at a position corresponding to the folding ring portion 51 on the gasket 8, and reference is made to FIG.
  • the diaphragm may be located on the upper surface of the sounding unit, the yoke 1 is located on the lower surface of the sounding unit, and the side walls of the entire magnetic circuit system are exposed. That is to say, the sounding unit does not have an additional housing to accommodate the components therein.
  • 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.

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Abstract

本发明公开了一种发声单体、发声模组及电子终端，包括磁路系统以及振动系统、电路板，所述音圈由两根音圈线共同缠绕而成，且每根音圈线的两端部分别形成了入线端、出线端；两个入线端的引出位置位于音圈的两侧，呈对角排布，两个出线端的引出位置位于音圈的两侧，呈角排布；两个入线端、两个出线端分别与电路板的相应焊盘电连接，所述电路板的内部电路被配置为用于将两个入线端电连接在一起，并将两个出线端电连接在一起。本发明发声单体，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。

Description

发声单体、发声模组及电子终端 技术领域
本发明涉及电声转换领域，更具体地，本发明涉及一种发声单体；本发明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
扬声器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。现有的扬声器模组，包括外壳，以及设置在外壳内的磁路系统以及振动系统。扬声器的磁路系统可以采用单磁路结构、双磁路结构、三磁路结构或者本领域技术人员所熟知的其它结构。
传统音圈是由一根音圈线绕制而成，音圈线例如可缠绕在音圈骨架上形成音圈。音圈线在音圈骨架上形成了一个入线端、一个出线端，并入线端、出线端将音圈电连接到外部电路中，以通过外部电路给音圈馈入音频信号。这种结构的音圈，通过入线端、出线端形成了导电回路，这就使得音圈的内阻比较大。
为了降低内阻，需要减少音圈线在音圈骨架上的缠绕圈数和/或层数，但是这会降低发声装置的BL值，使得振动系统的振动特性差。如果要提高BL值，只能增加音圈线在音圈骨架上的圈数和/或层数，但是这会增加音圈的内阻，使得振动系统的振动特性差，造成发声装置的性能不能满足需求。
发明内容
本发明的一个目的是提供一种发声单体的新技术方案。
根据本发明的第一方面，提供了一种发声单体，包括磁路系统以及振动系统、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路部分和边磁路部分,所述中心磁路部分和边磁路部分中的至少一个包含永磁 体,所述中心磁路部分和边磁路部分之间形成磁间隙；所述振动系统包括振膜以及音圈，所述音圈的一端连接在振膜上，另一端伸入至所述磁路系统的磁间隙中；
其中，所述音圈由两根音圈线共同缠绕而成，且每根所述音圈线的两端部分别形成了入线端及出线端；两个入线端的引出位置位于所述音圈的两侧，呈对角排布，两个出线端的引出位置位于所述音圈的两侧，呈对角排布；两个入线端、两个出线端分别与所述电路板的相应焊盘电连接，所述电路板的内部电路被配置为用于将两个入线端电连接在一起，将两个出线端电连接在一起。
可选地，所述其中一个入线端与其中一个相邻的出线端相对于音圈的第一轴对称，与另一个相邻的出线端相对于音圈的第二轴对称；所述音圈的第一轴垂直于所述音圈的第二轴；
另一个入线端与所述其中一个相邻的出线端相对于音圈的第二轴对称，与所述另一个相邻的出线端相对于音圈的第一轴对称。
可选地，所述音圈呈长方形，所述入线端与在长边侧上相邻的一个出线端为同一根音圈线的两端部。
可选地，所述音圈呈长方形，所述入线端与在短边侧上相邻的一个出线端为同一根音圈线的两端部。
可选地，所述边磁路部分在对应两个入线端、两个出线端的位置各形成一开口，所述电路板在对应所述边磁路部分开口位置各形成一焊盘，所述两个入线端、两个出线端经过各自的开口并焊接在邻近的焊盘上。
可选地，所述两个入线端、两个出线端在各自的开口位置呈S形引出。
可选地，所述边磁路部分在对应两个入线端、两个出线端的位置各形成一开口，所述电路板在对应所述边磁路部分开口位置各形成一焊盘，所述两个入线端、两个出线端分别穿过各自对应的开口绕至对应的边磁路部分的外侧，并从所述对应的边磁路部分的外侧迂回延伸至对应的相邻焊盘，焊接在所述相邻焊盘上，所述两个入线端、两个出线端分别焊接在不同的焊盘上,且所述两个入线端焊接的焊盘呈对角排布,所述两个出线端焊接的焊盘呈对角排布。
可选地，所述两个入线端分别穿过各自对应的开口时，至少一个入线端与其对应的边磁路部分的距离，从靠近磁间隙至靠近边磁路部分外侧的方向上逐渐减小；
和/或，
所述两个出线端分别穿过各自对应的开口时，至少一个出线端与其对应的边磁路部分的距离，从靠近磁间隙至靠近边磁路部分外侧的方向上逐渐减小。
可选地，在所述边磁路部分的部分边缘外侧形成有面向所述磁轭的承载台；
所述两个入线端及两个出线端中的至少一个的第一部分固定在所述承载台上；所述第一部分为入线端及出线端绕至对应的边磁路部分的外侧的部分。
可选地，所述边磁路部分包括边磁铁和设于所述边磁铁上表面的边导磁板；
所述边磁铁的边缘外侧向外延伸，形成所述承载台；
或者，
所述边导磁板的边缘外侧向所述磁轭方向弯折延伸到所述边磁铁外侧，形成所述承载台。
可选地，在所述边磁路部分的部分边缘外侧设置有固定件，所述固定件包括面向所述振膜方向的第一部件以及面向磁轭方向的第二部件，所述第一部件与所述第二部件相对且间隔有缝隙；
所述两个入线端及两个出线端中的至少一个在绕至对应的边磁路部分的外侧时，夹设在所述缝隙内并穿过所述缝隙与对应的相邻焊盘电连接。
可选地，所述固定件为弹性件。
可选地,在所述边磁路部分远离磁间隙的一侧形成有容纳槽，所述电路板为中空的环形，且设置于所述容纳槽内。
可选地,所述边磁路部分包括边磁铁和设于所述边磁铁上表面的边导磁板；
所述边导磁板在与边磁铁相对的一侧上形成有凹陷部，所述凹陷部位 于所述边导磁板的远离磁间隙的一侧边缘，所述凹陷部构成所述容纳槽；
或者，所述边磁铁在与边导磁板相对的一侧上形成有凹陷部，所述凹陷部位于所述边磁铁的远离磁间隙的一侧边缘，所述凹陷部构成所述容纳槽；
或者，所述边导磁板及边磁铁相对的一侧上均形成有凹陷部，所述凹陷部位于所述边导磁板及边磁铁的远离磁间隙的一侧边缘，所述边导磁板及边磁铁的凹陷部共同构成所述容纳槽。
可选地,所述振膜的边缘固定在所述边磁路部分的上方；
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。
可选地，所述边磁路部分包括边磁铁和设于所述边磁铁上表面的边导磁板，所述振膜的边缘固定在所述边导磁板的上表面。
可选地，所述边导磁板的上表面的边缘设有垫圈，所述振膜的边缘固定在所述垫圈上。
可选地,所述垫圈的边缘向上突出设有凸缘，所述振膜的边缘固定在所述凸缘上。
可选地,所述边导磁板的边缘向上突出设有凸缘，所述振膜的边缘固定在所述凸缘上。
根据本发明的第二方面，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发声单体。
根据本发明的第三方面，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发声单体，或者安装在终端壳体内的发声模组。
本发明发声单体，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。
进一步的，本发明发声单体，音圈的绕线采用两根音圈线共同缠绕的方式，两条入线、两条出线形成四条悬空引线。四条悬空引线形成几何对称分布，振动时对振动系统的反作用力也更加对称，从而大大减小产品的 偏振，改善失真、改善音质；此外，该设计使得发声单体具有更高的BL值，从而提高单体的灵敏度。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明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发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1是本发明发声单体的剖面图。
图2是图1中发声单体去掉磁轭后的仰视图。
图3是另一实施方式中去掉磁轭后的仰视图。
图4是发声单体中边磁路部分第一实施方式的局部放大图。
图5是发声单体中边磁路部分第二实施方式的局部放大图。
图6是发声单体中边磁路部分第三实施方式的局部放大图。
具体实施方式
现在将参照附图来详细描述本发明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发明的范围。
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，决不作为对本发明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和设备可能不作详细讨论，但在适当情况下，所述技术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。
参考图1，本发明提供了一种发声单体，该发声单体可以应用到发声模组中以及电子终端中。本发明的发声单体包括磁路系统以及振动系统。磁路系统可以采用本领域技术人员所熟知的单磁路结构、双磁路结构或者多磁路结构。例如在本发明一个具体的实施方式中，磁路系统包括磁轭1以及设置在磁轭1上的中心磁路部分和边磁路部分,中心磁路部分和边磁路部分中的至少一个包含永磁体,中心磁路部分和边磁路部分之间形成磁间隙。
例如边磁路部分可以与磁轭1是一体成型的，其为形成在磁轭1边缘的侧壁部，中心磁路部分可以是设置在磁轭1中心区域的永磁体，其与磁轭1的侧壁部构成了磁路系统的磁间隙。
还可以是，磁轭1可以采用平板状结构或者盆状结构，中心磁路部分包括安装在磁轭1中心区域的中心磁铁2，边磁路部分包括分布在中心磁铁2侧边位置的边磁铁3。边磁铁3可以设置有两个；当然也可以设置有四个，分布在中心磁铁2的四周，且四个边磁铁3与中心磁铁2之间形成了磁路系统的磁间隙。参考图2，四个边磁铁3围成了近似长方形的结构，且相邻两个边磁铁3之间形成有开口，便于后续音圈线的引出。
为了使磁路系统的磁感线可以聚集在磁间隙的附近，在中心磁铁2的上表面可以设置有中心导磁板4，该中心导磁板4例如可以通过粘接的方式固定在中心磁铁2上。在边磁铁3的上表面可设置有边导磁板5，其中，边导磁板5可以设置有四个，分别可通过粘接的方式固定在四个边磁铁3上。还可以是，边导磁板5采用一体的环状结构，同时粘接在四个边磁铁3的上表面。
本发明的振动系统包括振膜、安装在振膜上的音圈7。本发明的振膜包括位于边缘的连接部50，位于中部的振动部52，以及位于连接部50与振动部52之间的折环部51。振膜边缘的连接部50可以通过垫圈8支撑在边导磁板5的上方，当然垫圈8也可以设置在磁轭1上。当然振膜还可以采用平面型振膜，这属于本领域技术人员的公知常识，在此不再具体赘述。
振膜通过其边缘的连接部50连接在垫圈8上，中部区域的振动部52为振膜的主要发声区域，通过音圈7可以策动该振动部52发声，折环部 51可以提高振动部52的灵敏度。
本发明音圈7的上端可以直接连接在振动部52的下端。还可以是，振动部52上设置有镂空结构，通过设置的球顶结构6将该镂空结构覆盖住。此时，音圈7的上端可以连接在振动部52没有被镂空的区域，也可以直接连接在球顶结构6的下端。音圈7的另一端需要伸入至磁路系统的磁间隙中，使得音圈7在磁力线的作用下发生振动。
音圈7由两根音圈线并排同时逐层缠绕而成，也就是说，本发明的音圈7由两根音圈线共同缠绕而成。音圈线可以采用本领域技术人员所熟知的漆包线。两根音圈并排分布，且可通过缠绕机同时逐层缠绕，使得每一层缠绕线上，两根音圈线间隔排列。音圈7上缠绕的层数可以根据设计需求而定，例如两层或者更多层。
每根音圈线在缠绕形成音圈7时，两端部分别形成了入线端、出线端，其中，入线端用于电信号的引入，出线端用于电信号的引出以形成回路。
两个入线端、两个出线端需要分别从音圈7上引出，也就是说，音圈7具有四个引线端，该四个引线端从音圈7的四个不同的位置引出，这就使得可以将该四个引线端设计成平衡的对称结构来解决振动系统的偏振问题。
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。
两个入线端的引出位置位于音圈的两侧，且呈对角排布，两个出线端的引出位置位于音圈的两侧，且呈对角排布。其中，为了便于描述，两个入线端、两个出线端可分别记为第一入线端70、第二入线端72、第一出线端71、第二出线端73。第一入线端70、第二入线端72引出位置位于音圈7的对角位置，第一出线端71、第二出线端73的引出位置位于音圈7的另一对角位置。
这样，本发明发声单体，音圈的绕线采用两根音圈线共同缠绕的方式，两条入线、两条出线形成四条悬空引线。四条悬空引线形成几何对称分布， 振动时对振动系统的反作用力也更加对称，从而大大减小产品的偏振，改善失真、改善音质；此外，该设计使得发声单体具有更高的BL值，从而提高单体的灵敏度。
参考图2的视图方向，第一入线端70、第二入线端72的引出位置位于音圈7左上角、右下角位置，第一出线端71、第二出线端73的引出位置位于音圈7右上角、左下角位置。
第一入线端70、第二入线端72、第一出线端71、第二出线端73例如可以从音圈7的四个拐角位置引出，该四个引线端可以从音圈7四个拐角区域的短边上引出，也可以从四个拐角区域的长边上引出，在此不做具体限定。
第一入线端70、第二入线端72、第一出线端71、第二出线端73的引出位置位于音圈7的四个拐角位置，且第一入线端70、第一出线端71在音圈7的长边侧上相邻，第一入线端70、第二出线端73在音圈7的短边侧上相邻；第二入线端72、第一出线端71在音圈7的短边侧上相邻，第二入线端72、第二出线端73在音圈7的长边侧上相邻。
相邻两个边磁铁3之间形成的开口与音圈7的四个拐角区域相对应，使得四个引线端可以从相应的开口位置引出并连接到电路板的相应焊盘上。
在本发明一个具体的实施方式中，电路板可以为FPCB板9，参考图2。FPCB板9可以粘接在垫圈8(或支撑壳体)上，也可以粘接在边导磁板5或者边磁铁3上，在此不做限定。
在本发明一个具体的实施方式中，在所述边磁路部分远离磁间隙的一侧形成有容纳槽12。参考图1，边磁路部分上靠近外围边缘的区域压设形成了凹陷的容纳槽12，该容纳槽12沿着磁路系统的外围环绕延伸一圈。呈中空环状的电路板4设置在该容纳槽2中。
这样的结构使得发声单体的整体外形不会因为设置了电路板而出现变厚、变宽的现象，参见图1，电路板完全埋设于磁路系统内。本发明提供的发声单体通过设计容纳槽使其整体结构更紧凑，在不有损产品性能的情况下，尽可能的缩小其所占用的空间。
特别地，通过在边磁路部分的外围设计容纳槽，还能够起到聚集磁感线、提高磁间隙中磁场强度的作用。位于边磁路部分外围的容纳槽12占据了磁路系统的部分空间，即磁路系统在外围形成了一部分镂空。磁路系统上的镂空部分不能导磁，相对的，在磁路系统的磁性一定的情况下，磁感线会向边磁路部分的靠近磁间隙的一侧聚集，磁感线从容纳槽12内侧的磁路系统上穿过。这样，磁路系统的内侧的磁场强度得到提升，能够有效提高磁路系统中磁间隙处的磁场强度。对于发声单体的声学性能，响应灵敏度提升，声学性能得到明显改善。
在本发明一个具体的实施方式中，边导磁板5在与边磁铁3相对的一侧表面上形成有凹陷部，边导磁板5与边磁铁3贴合设置后，该凹陷部构成所述容纳槽12。边导磁板5上的凹陷部优选靠近边导磁板5外侧的边缘，即凹陷部位于边导磁板5上远离中心磁路部分、磁间隙的一侧，以使磁感线向靠近中心磁路部分的一侧聚集。
在其它可选的类似实施方式中，凹陷部也可形成在边磁铁3上与边导磁板5相对的一侧表面上。边导磁板5与边磁铁3盖合后，凹陷部构成上述的容纳槽12。凹陷部优先位于边磁铁3上远离中心磁路部分、磁间隙的一侧，以使磁感线向靠近中心磁路部分的一侧聚集。
在其它可选的类似实施方式中，边磁铁3和边导磁板5在相对的一侧上均形成有凹陷部，两者的凹陷部的位置相互对应，两个凹陷部组合构成上述的容纳槽12。该凹陷部优先位于边磁铁3、边导磁板5上远离中心磁路部分、磁间隙的一侧，以使磁感线向靠近中心磁路部分的一侧聚集。
FPCB板9在对应开口位置各形成一焊盘，例如可记为邻近第一入线端70分布的第一焊盘91、邻近第一出线端71分布的第二焊盘93、邻近第二出线端73分布的第三焊盘90、邻近第二入线端72分布的第四焊盘92。
两个入线端、两个出线端分别焊接在不同的焊盘上，且两个入线端焊接的焊盘呈对角排布,两个出线端焊接的焊盘呈对角排布。例如：本发明的实施例中，引线端可以在音圈7的短边上顺线。例如，第一入线端70从音圈7的拐角位置引出后，穿过与其对应的相邻两个边磁铁3之间形成的开口绕至对应的边磁铁3的外侧，并从该边磁铁3的外侧迂回延伸至邻近第 二出线端73分布的第三焊盘90上。对应的，第二出线端73从音圈7的拐角位置引出后，穿过与其对应的相邻两个边磁铁3之间形成的开口绕至对应的边磁铁3的外侧，并从该边磁铁3的外侧迂回延伸至邻近第一入线端70分布的第一焊盘91上。第一出线端71、第二入线端72亦按照此方式进行引出，在此不再具体说明。
对于本领域的技术人员而言，两个入线端、两个出线端从各自对应的开口穿出后，也可沿着长边位置的边磁铁3外侧迂回延伸，在此不再具体说明。
在本发明一个可选的实施方式中，两个入线端分别穿过各自对应的开口时，至少一个入线端与其对应的边磁路部分的距离，从靠近磁间隙的部分至靠近边磁路部分外侧的部分逐渐减小；和/或，两个出线端分别穿过各自对应的开口时，至少一个出线端与其对应的边磁路部分的距离，从靠近磁间隙的部分至靠近边磁路部分外侧的部分逐渐减小。
具体地，参考图2，第一入线端70从音圈7的拐角位置引出后，穿过与其对应的相邻两个边磁铁3之间形成的开口时，第一入线端70与短边位置的边磁铁3距离，从靠近磁间隙至靠近与其对应的边磁铁3外侧的方向上是逐渐减小的。第二入线端72、第一出线端71、第二出线端73亦按照此方式进行引出，在此不再具体说明。采用这样的引出方式，可以在小空间内增加四个引出端悬空的长度，从而可以减小引线振动时的应力，改善振动系统的振动效果。
在本发明一个可选的实施方式中，在边磁路部分的部分边缘外侧形成有面向磁轭1的承载台10，承载台10与磁轭1相对的承载面用于承载、固定连接延伸至其上或者从其上延伸而过的引线。在本发明中，边磁路部分的部分边缘外侧指的是边磁路部分远离中心磁路部分、磁间隙的一侧。或者，边磁路部分的位于发声单体外表面的一侧。
具体地，参考图4，边磁铁3的外边缘向外延伸形成垫台，该垫台置于边磁铁本体的远离磁间隙的一侧，该垫台构成了承载台10。本发明不对在边磁铁3上形成垫台的形式进行限制。参考图4的视图方向，优选地，垫台的顶面低于边磁铁本体的顶面，以使垫台能够更准确的对引线形成定 位。边磁路部分可以一共包括两个或四个边磁铁3，其中，可以仅在两个边磁铁3的外围形成承载台。本发明并不对边磁路部分具体包括几个边磁铁、哪几个边磁铁外围形成有承载台进行限制。在具体实施时，可以具体根据对发声单体的性能和形状要求进行配置。在图2、图4所示的实施方式中，对称分布的两个短边位置的边磁铁3的外侧形成有承载台10。
在另一个实施方式中，参考图5,边导磁板5具有弯折延伸到边磁铁3外侧的弯边，该弯边延伸包围到边磁铁12的外表面上，并构成了上述的承载台10。
以上两种实施方式的优点在于，一方面，通过边磁铁或边导磁板形成承载台的结构特征简单、加工和装配工艺简单，发声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，在其外侧形成承载台，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，引线延伸到其上的承载台进行固定，稳定性更高，不易发生晃动等问题。
本发明并不限制必须在边磁铁或边导磁板上形成承载台，在其它实施方式中，例如边磁路部分由环形的导磁部件构成，或者边磁路部分由导磁的侧壁部件构成，上述承载台也可以形成在这些结构的外围表面上。
第一入线端70在从该边磁铁3的外侧迂回延伸至第三焊盘90的过程中，第一入线端70绕至边磁铁3外侧的部分(可记为第一部分)可固定在承载台10上，例如可以通过粘接、焊接的方式进行固定。
第一出线端71、第二入线端72、第二出线端73亦可按照此方式进行引出，在此不再具体说明。
采用这样的结构方式，引线在发声单体中的固定连接更加稳定，不易因音圈振动而导致引线断线、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路部分外围，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。
在本发明另一个实施方式中，在边磁路部分的部分边缘外侧设置有固定件11，该固定件11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。在本发明中，边磁路部分的部分边缘外侧指的是边磁路部分远离中心磁路部分、磁间隙的一侧。或者，边磁路部分的位于发声单体外表面的一侧。
固定件11被设置成，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引线在发声单体中的高度位置进行限制；即，在发声单体的高度方向上，从上下两侧限制引线的位置。避免引线固定在发声单体中的线段出现随振膜的振动而上下浮动、碰撞的现象。
参考图6，第一入线端70绕至边磁路部分的外围，且延伸到位于边磁路部分外围的固定件11中，之后再与第三焊盘90形成电连接。第一入线端70可以通过粘接、焊接等方式与固定件11固定连接。固定件11中具有缝隙、穿孔或其它结构，以使第一入线端70能够从固定件11中穿过。固定件11通过缝隙夹合固定第一入线端70或者通过穿孔的径向限制作用固定第一入线端70。至少，固定件11能够从第一入线端70的上下两侧起到限制位置的作用。
第一出线端71、第二入线端72、第二出线端73亦可按照此方式进行引出，在此不再具体说明。
本发明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路部分外围，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。发声单体的应用可靠性更高。
具体如如图6所示，独立的固定件11直接设置在边磁铁3和边导磁 板5的外围。固定件11可以贴附、粘接在边磁铁3和边导磁板5外表面上，或者通过注塑成型的方式固定在其上，本发明并不对具体的连接方式进行限制。固定部11可以分为面向振膜方向的第一部件1011以及面向磁轭方向的第二部件1012。第一部件1011和第二部件1012可以是互相独立的，也可以是相互连接的，本发明也不对此进行限制。第一部件1011和第二部件1012相对设置且间隔有缝隙。
图6中所示的第一部件1011和第二部件1012之间相互独立，不具有连接关系。对于固定件11采用穿孔容纳引线的实施方式，第一部件1011和第二部件1012可以是一个整体结构，二者之间的缝隙为固定件11的穿孔。固定件11整体贴附在边磁路部分的外表面上即可。
第一入线端70在绕至与其对应的边磁路部分的外侧时，夹设在固定件的缝隙内，并穿过该缝隙与对应的焊盘电连接在一起。
优选地，固定件11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，具有弹性的固定件11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路部分形成固定连接。
在本发明另一个实施方式中，参考图3，两个入线端、两个出线端经过各自的开口并焊接在邻近的焊盘上。也就是说，第一入线端70从音圈7的拐角位置引出后，穿过与其对应的相邻两个边磁铁3之间形成的开口，连接至邻近第一入线端70分布的第一焊盘91上；第二出线端73从音圈7的拐角位置引出后，穿过与其对应的相邻两个边磁铁3之间形成的开口，连接至邻近第二出线端73分布的第三焊盘90上。第一出线端71、第二入线端72亦按照此方式进行引出，在此不再具体说明。
可选的是，在该实施例中，两个入线端、两个出线端在各自的开口位置呈S形引出，同样可以实现在小空间内增加四个引出端悬空的长度，从而可以减小引线振动时的应力，改善振动系统的振动效果。
本发明的FPCB板9，通过其内部电路使得将两个入线端电连接在一起，将两个出线端电连接在一起。参考图2，在FPCB板9上设置有入线焊盘94以及出线焊盘95，该入线焊盘94、出线焊盘95用于外接电路。FPCB板9通过其内部电路将第一焊盘91、第四焊盘92共同连接到入线焊盘94上，并通过其内部电路将第二焊盘93、第三焊盘90共同连接到出线焊盘95上。这就使得将两根音圈线并联在一起，从而可以降低整个音圈7的内阻。从另一个角度而言，相对传统结构而言，在相同内阻的前提下，本发明的音圈7可以缠绕更多的音圈线，从而提高振动系统的灵敏度，提高发声单体的发声性能。
为了抑制振动系统的偏振问题，可以将四个引出端设置成对称结构。例如在本发明一个具体的实施方式中，其中一个入线端与其中一个相邻的出线端相对于音圈的第一轴对称，另一个入线端与另一个相邻的出线端相对于音圈的第一轴对称，该第一轴例如可以是沿音圈7短边方向延伸的中心轴。参考图1、图2、图3的视图方向，第一入线端70与第一出线端71在音圈7的长边侧上相邻，且第一入线端70与第一出线端71对称分布在音圈7的左右两侧。基于同样的道理，第二入线端72与第二出线端73在音圈7的另一长边侧上相邻，且第二入线端72与第二出线端73对称分布在音圈7的左右两侧。通过这种对称的结构设计，使得各引出端在振动时产生的应力也对称，从而可以抑制整个振动系统的偏振。
需要指出的是，此处的“对称”不但指的是引出端从音圈7上的引出位置对称，而且还指引出端顺线的形状对称。
本发明优选的是，其中一个入线端与其中一个相邻的出线端相对于音圈的第一轴对称，与另一个相邻的出线端相对于音圈的第二轴对称；另一个入线端与其中一个相邻的出线端相对于音圈的第一轴对称，与另一个相邻的出线端相对于音圈的第二轴对称。第二轴与第一轴为不同的轴，且相互垂直。例如第一轴例如可以是沿音圈7短边方向延伸的中心轴，第二轴可以是沿音圈7长边方向延伸的中心轴。参考图2的视图方向，第一入线端70与第二出线端73对称分布在音圈7的上下两侧；第一入线端70与第一出线端71对称分布在音圈7的左右两侧。第二入线端72与第一出线端 71对称分布在音圈7的上下两侧；第二入线端72与第二出线端73对称分布在音圈7的左右两侧。此时，第一入线端70与第二入线端72相对于音圈7中心对称。
这种对称结构，可以最大抑制由于振动时引出端应力变化导致的整个振动系统的偏振问题。从一个角度而言，当该发生单体应用到具体产品中时，由于振动系统的偏振问题得到了抑制，使得可以通过调节来提高振动系统的最大振幅，从而提高用户的体验。
本发明中，入线端与在短边侧上相邻的一个出线端为同一根音圈线的两端部。也就是说，第一入线端70与第二出线端73可以为同一根音圈线的两端部。第二入线端72与第一出线端71可以为同一根音圈线的两端部。
参考图2的视图方向，两根音圈线例如以逆时针的方式进行缠绕。其中一根音圈线从第一入线端70的位置出发，经过整数圈的缠绕后，再缠绕一个短边即可形成第二出线端73。基于同样的道理，另一根音圈线从第二入线端72的位置出发，经过整数圈的缠绕后，再缠绕一个短边即可形成第一出线端71。
还可以是，入线端与在长边侧上相邻的一个出线端为同一根音圈线的两端部。也就是说，第一入线端70与第一出线端71分别是同一根音圈线的两端部。第二入线端72与第二出线端73为同一根音圈线的两端部。
参考图2的视图方向，两根音圈线例如以逆时针的方式进行缠绕。其中一根音圈线从第一入线端70的位置出发，经过整数圈的缠绕后，再缠绕3/4圈即可形成第一出线端71。基于同样的道理，另一根音圈线从第二入线端72的位置出发，经过整数圈的缠绕后，再缠绕3/4圈即可形成第二出线端73。
本发明的发声单体，振膜边缘的连接部50固定在边磁路部分的上方，且，振膜在其振动方向上的投影位于磁路系统的外部轮廓范围内。这种结构与传统振膜连接在壳体上，以至于使振膜在其振动方向上的投影位于磁路系统的外部轮廓范围之外是不同的。
例如，振膜的边缘可以固定在边导磁板5的上表面。为了防止振膜的折环部51在随着振动部52共同振动时与边导磁板5产生干涉，优选的是， 边导磁板5的边缘向上突出设有凸缘，振膜的边缘部可固定在凸缘上。
可选的是，边导磁板5上表面的边缘设有垫圈8，振膜的边缘固定在垫圈8上。
进一步的，为了防止振膜的折环部51在随着振动部52共同振动时与垫圈8产生干涉，垫圈8的边缘向上突出设有凸缘80，振膜的边缘固定在凸缘80上，以在垫圈8上与折环部51对应的位置形成避让区域，参考图1。
当然,还可以是其他固定振膜的方式,本发明对此不做限制。
振膜可以位于发声单体的上表面，磁轭1位于发声单体的下表面，且整个磁路系统的侧壁裸露在外。也就是说，发声单体没有设置额外的壳体来将各元件容纳在其中。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。
虽然已经通过例子对本发明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，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (21)

  1. 一种发声单体，其特征在于：包括磁路系统以及振动系统、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路部分和边磁路部分,所述中心磁路部分和边磁路部分中的至少一个包含永磁体,所述中心磁路部分和边磁路部分之间形成磁间隙；所述振动系统包括振膜以及音圈，所述音圈的一端连接在振膜上，另一端伸入至所述磁路系统的磁间隙中；
    其中，所述音圈由两根音圈线共同缠绕而成，且每根所述音圈线的两端部分别形成了入线端及出线端；两个入线端的引出位置位于所述音圈的两侧，呈对角排布，两个出线端的引出位置位于所述音圈的两侧，呈对角排布；两个入线端、两个出线端分别与所述电路板的相应焊盘电连接，所述电路板的内部电路被配置为用于将两个入线端电连接在一起，将两个出线端电连接在一起。
  2. 根据权利要求1所述的发声单体，其特征在于：所述其中一个入线端与其中一个相邻的出线端相对于音圈的第一轴对称，与另一个相邻的出线端相对于音圈的第二轴对称；所述音圈的第一轴垂直于所述音圈的第二轴；
    另一个入线端与所述其中一个相邻的出线端相对于音圈的第二轴对称，与所述另一个相邻的出线端相对于音圈的第一轴对称。
  3. 根据权利要求1或2所述的发声单体，其特征在于：所述音圈呈长方形，所述入线端与在长边侧上相邻的一个出线端为同一根音圈线的两端部。
  4. 根据权利要求1至3任一项所述的发声单体，其特征在于：所述音圈呈长方形，所述入线端与在短边侧上相邻的一个出线端为同一根音圈线的两端部。
  5. 根据权利要求1至4任一项所述的发声单体，其特征在于：所述边磁路部分在对应两个入线端、两个出线端的位置各形成一开口，所述电路板在对应所述边磁路部分开口位置各形成一焊盘，所述两个入线端、两个出线端经过各自的开口并焊接在邻近的焊盘上。
  6. 根据权利要求1至5任一项所述的发声单体，其特征在于：所述两个入线端、两个出线端在各自的开口位置呈S形引出。
  7. 根据权利要求1至6任一项所述的发声单体，其特征在于：所述边磁路部分在对应两个入线端、两个出线端的位置各形成一开口，所述电路板在对应所述边磁路部分开口位置各形成一焊盘，所述两个入线端、两个出线端分别穿过各自对应的开口绕至对应的边磁路部分的外侧，并从所述对应的边磁路部分的外侧迂回延伸至对应的相邻焊盘，焊接在所述相邻焊盘上，所述两个入线端、两个出线端分别焊接在不同的焊盘上,且所述两个入线端焊接的焊盘呈对角排布,所述两个出线端焊接的焊盘呈对角排布。
  8. 根据权利要求1至7任一项所述的发声单体,其特征在于:
    所述两个入线端分别穿过各自对应的开口时，至少一个入线端与其对应的边磁路部分的距离，从靠近磁间隙至靠近边磁路部分外侧的方向上逐渐减小；
    和/或，
    所述两个出线端分别穿过各自对应的开口时，至少一个出线端与其对应的边磁路部分的距离，从靠近磁间隙至靠近边磁路部分外侧的方向上逐渐减小。
  9. 根据权利要求1至8任一项所述的发声单体，其特征在于，在所述边磁路部分的部分边缘外侧形成有面向所述磁轭的承载台；
    所述两个入线端及两个出线端中的至少一个的第一部分固定在所述承载台上；所述第一部分为入线端及出线端绕至对应的边磁路部分的外侧的部分。
  10. 根据权利要求1至9任一项所述的发声单体，其特征在于，
    所述边磁路部分包括边磁铁和设于所述边磁铁上表面的边导磁板；
    所述边磁铁的边缘外侧向外延伸，形成所述承载台；
    或者，
    所述边导磁板的边缘外侧向所述磁轭方向弯折延伸到所述边磁铁外侧，形成所述承载台。
  11. 根据权利要求1至10任一项所述的发声单体，其特征在于，在所 述边磁路部分的部分边缘外侧设置有固定件，所述固定件包括面向所述振膜方向的第一部件以及面向磁轭方向的第二部件，所述第一部件与所述第二部件相对且间隔有缝隙；
    所述两个入线端及两个出线端中的至少一个在绕至对应的边磁路部分的外侧时，夹设在所述缝隙内并穿过所述缝隙与对应的相邻焊盘电连接。
  12. 根据权利要求1至11任一项所述的发声单体，其特征在于，所述固定件为弹性件。
  13. 根据权利要求1至12任一项所述的发生单体，其特征在于，在所述边磁路部分远离磁间隙的一侧形成有容纳槽，所述电路板为中空的环形，且设置于所述容纳槽内。
  14. 根据权利要求1至13任一项所述的发生单体，其特征在于，所述边磁路部分包括边磁铁和设于所述边磁铁上表面的边导磁板；
    所述边导磁板在与边磁铁相对的一侧上形成有凹陷部，所述凹陷部位于所述边导磁板的远离磁间隙的一侧边缘，所述凹陷部构成所述容纳槽；
    或者，所述边磁铁在与边导磁板相对的一侧上形成有凹陷部，所述凹陷部位于所述边磁铁的远离磁间隙的一侧边缘，所述凹陷部构成所述容纳槽；
    或者，所述边导磁板及边磁铁相对的一侧上均形成有凹陷部，所述凹陷部位于所述边导磁板及边磁铁的远离磁间隙的一侧边缘，所述边导磁板及边磁铁的凹陷部共同构成所述容纳槽。
  15. 根据权利要求1至14任一项所述的发声单体，其特征在于：
    所述振膜的边缘固定在所述边磁路部分的上方；
    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。
  16. 根据权利要求1至15任一项所述的发声单体，其特征在于，
    所述边磁路部分包括边磁铁和设于所述边磁铁上表面的边导磁板，所述振膜的边缘固定在所述边导磁板的上表面。
  17. 根据权利要求1至16任一项所述的发声单体，其特征在于，
    所述边导磁板的上表面的边缘设有垫圈，所述振膜的边缘固定在所述 垫圈上。
  18. 根据权利要求1至17任一项所述的发声单体，其特征在于，
    所述垫圈的边缘向上突出设有凸缘，所述振膜的边缘固定在所述凸缘上。
  19. 根据权利要求1至18任一项所述的发声单体，其特征在于，
    所述边导磁板的边缘向上突出设有凸缘，所述振膜的边缘固定在所述凸缘上。
  20. 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权利要求1至19任一项所述的发声单体。
  21. 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权利要求1至19任一项所述的发声单体，或者安装在终端壳体内的根据权利要求20所述的发声模组。
PCT/CN2018/120392 2018-04-27 2018-12-11 发声单体、发声模组及电子终端 WO2019205660A1 (zh)

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