WO2020000930A1 - 发声器件和便携终端 - Google Patents

发声器件和便携终端 Download PDF

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Publication number
WO2020000930A1
WO2020000930A1 PCT/CN2018/121429 CN2018121429W WO2020000930A1 WO 2020000930 A1 WO2020000930 A1 WO 2020000930A1 CN 2018121429 W CN2018121429 W CN 2018121429W WO 2020000930 A1 WO2020000930 A1 WO 2020000930A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
voice coil
skeleton
magnetic circuit
sound
Prior art date
Application number
PCT/CN2018/121429
Other languages
English (en)
French (fr)
Inventor
王兴龙
王建建
徐同雁
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 US17/256,611 priority Critical patent/US11317217B2/en
Publication of WO2020000930A1 publication Critical patent/WO2020000930A1/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
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • 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
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • 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
    • 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
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Definitions

  • the present invention relates to the technical field of acoustic electricity, and in particular, to a sound emitting device and a portable terminal applying the sound emitting device.
  • speakers are widely used as important components of terminals with audio playback functions.
  • the main purpose of the present invention is to provide a sounding device, which aims to solve the technical problem that the existing sounding device that realizes two-way sound is difficult to be widely used due to its large size.
  • the sound generating device provided by the present invention includes:
  • a first vibration system comprising a skeletal voice coil
  • the skeletal voice coil is provided inside the first diaphragm
  • the skeletal voice coil is fixedly connected to the first diaphragm
  • the skeletal voice includes a voice coil body formed by winding a skeleton and a voice coil lead around the skeleton, and an end of the skeleton remote from the first diaphragm at least partially protrudes from the voice coil body;
  • a second vibration system including a second vibration film disposed opposite to the first vibration film;
  • a magnetic circuit system is provided between the first diaphragm and the second diaphragm, and the magnetic circuit system is provided with an avoidance portion; an end of the skeleton far from the first diaphragm can be movably provided through the avoidance portion And fixedly connected to the second diaphragm.
  • the magnetic circuit system includes a magnetically permeable yoke, a central magnetic circuit portion and an edge magnetic circuit portion provided on the magnetic yoke, and at least one of the central magnetic circuit portion and the edge magnetic circuit portion A permanent magnet is provided, and a magnetic gap containing the skeleton voice coil is formed between the central magnetic circuit portion and the side magnetic circuit portion; the avoidance portion is further provided at a position of the magnetic yoke corresponding to the skeleton voice coil.
  • a first acoustic cavity is formed between the magnetic circuit system and the first diaphragm
  • a second acoustic cavity is formed between the magnetic circuit system and the second diaphragm
  • the avoidance portion communicates with the first acoustic cavity.
  • a sound cavity and a second sound cavity are formed between the magnetic circuit system and the first diaphragm
  • the magnetic yoke includes two opposite long sides and two short sides, the long sides are spaced from the short sides, and the central magnetic path portion is located in the middle of the magnetic yoke
  • the side magnetic circuit portion is located on opposite sides of the central magnetic circuit portion and extends along the long side edge, and the magnetic yoke is provided with an avoidance gap corresponding to each of the short side edges to form the avoidance
  • the frame includes a support portion wound with a voice coil lead to form a voice coil body, connected to the support portion and protruding from a connection portion of the voice coil body, the connection portion passing through the avoidance gap and the
  • the second diaphragm is fixedly connected.
  • the side wall of the connecting portion is folded toward the inside of the skeleton and / or toward the outside of the skeleton to form a connecting flange, and the connecting flange faces away from the bottom surface of the supporting portion and the second The diaphragm is fixedly connected.
  • a plurality of the connecting flanging intervals are provided, and the folding directions of two adjacent connecting flangings are the same or different.
  • the side wall of the support portion is folded toward the inside of the skeleton and / or toward the outside of the skeleton to form a mounting flange, and the mounting flange faces away from the bottom surface of the connecting portion and the first The diaphragm is fixedly connected.
  • an end face of the support portion near the first diaphragm is flush with an end face of the voice coil body near the first diaphragm, or the support portion is near the first diaphragm
  • An end surface protrudes from an end surface of the voice coil body close to the first diaphragm.
  • an end face of the support portion remote from the first diaphragm is flush with an end face of the voice coil body remote from the first diaphragm, or an end face of the support away from the first diaphragm Does not protrude from the end surface of the voice coil body away from the first diaphragm.
  • a gap is also formed on the side wall of the support portion.
  • a side wall of the connecting portion is further provided with an escape hole.
  • the first diaphragm includes a central portion, a folded ring portion provided around the central portion, and a fixed portion provided around the folded portion.
  • the central portion of the first diaphragm is a flat sheet-like structure, and the folded portion
  • the ring portion is a structure composed of one protrusion, or the folded ring portion is a wavy structure composed of at least one protrusion and at least one depression.
  • the second diaphragm includes a central portion, a folded ring portion provided around the central portion, and a fixed portion provided around the folded portion; the central portion is a flat sheet-like structure, and the folded ring portion is formed by one A structure composed of protrusions, or the folded ring portion is a wavy structure composed of at least one protrusion and at least one depression.
  • the present invention also provides a portable terminal including a housing, the housing having an accommodating cavity therein, the portable terminal further including the sound emitting device as described above, the sound emitting device is installed in the accommodation cavity, and the housing
  • the body is provided with a first sound hole corresponding to the first diaphragm and a second sound hole corresponding to the second diaphragm.
  • the housing includes a front surface and a rear surface opposite to each other, the first sound hole is provided on the front surface, and the second sound hole is provided on the reverse surface.
  • the sound generating device of the present invention uses two vibration systems and a magnetic circuit system.
  • the first vibration system includes a skeletal voice coil and a first diaphragm fixed to the skeletal voice coil.
  • the skeletal part of the skeletal voice coil protrudes from the voice coil body.
  • the second diaphragm in the second vibration system is fixedly connected to the part of the skeleton protruding from the voice coil body.
  • the avoidance part that cooperates with the skeleton is designed in the magnetic circuit system.
  • the magnetic The effect of the circuit system on the voice coil directly drives the first diaphragm in the first vibration system to vibrate and sound, and at the same time, driven by the conduction of the skeletal voice coil, the second diaphragm in the second vibration system is linked to sound simultaneously.
  • the present invention can drive two diaphragms to achieve bidirectional sound through a voice coil skeleton and a magnetic circuit system, the structure of the sounding device between the first diaphragm and the second diaphragm occupies a small volume, and can be adapted to be relatively The small installation space makes it widely used in portable terminals.
  • FIG. 1 is a schematic front structural diagram of an embodiment of a sound generating device according to the present invention
  • FIG. 2 is a schematic diagram of a rear structure of the sound generating device in FIG. 1;
  • FIG. 2 is a schematic diagram of a rear structure of the sound generating device in FIG. 1;
  • FIG. 3 is a schematic diagram of an exploded structure of the sound generating device in FIG. 1, which illustrates a first embodiment of a skeletal voice coil;
  • FIG. 4 is a schematic cross-sectional structure view of the sound generating device in FIG. 1 along a length direction;
  • FIG. 5 is a partially enlarged view of A in FIG. 4.
  • FIG. 6 is an enlarged schematic view of the right end of the structure in FIG. 4; wherein the first embodiment of the second diaphragm is replaced with the second embodiment of the second diaphragm;
  • FIG. 7 is a schematic cross-sectional structure view of the sound generating device in FIG. 1 along a width direction;
  • FIG. 8 is a schematic front view of an assembly structure of a magnetic circuit system of the sound generating device in FIG. 1;
  • FIG. 9 is a schematic rear view of an assembly structure of a magnetic circuit system of the sound generating device in FIG. 1;
  • FIG. 10 is a schematic structural diagram of a first embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 11 is a schematic structural diagram of a second embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 12 is a schematic structural diagram of a third embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 13 is a schematic structural diagram of a fourth embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 14 is a schematic structural diagram of a fifth embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 15 is a schematic structural diagram of a sixth embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 16 is a schematic structural diagram of a seventh embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 17 is a schematic structural diagram of an eighth embodiment of a skeletal voice coil of a sound generating device according to the present invention.
  • FIG. 18 is a schematic front structural diagram of an embodiment of a portable terminal according to the present invention.
  • FIG. 19 is a schematic structural diagram of a rear surface of the portable terminal in FIG. 18;
  • FIG. 20 is a schematic view of a partial cross-sectional structure at B in FIG. 18.
  • first vibration system 11: first diaphragm; 12: voice coil; 2: second vibration system; 21a, 21b: second diaphragm; 211a, 211b: center portion; 212a, 212b: folded ring portion; 213a, 213b: fixed part; 3: magnetic circuit system; 31: magnetic yoke; 311: long side; 313: short side; 315: avoidance gap; 32: center magnetic steel; 33: sub magnetic steel; 34: Center magnetic guide plate; 35: side magnetic guide plate; 36: magnetic gap; 12: skeleton voice coil; 121: voice coil body; 122: skeleton; 123: support; 1231: mounting flange; 1232: notch; 124: Connection section; 1241: connection flanging; 1242: avoidance hole; 7: housing; 8: front cover; 81: front sound hole; 9: rear cover; 91: rear sound hole; 100: portable terminal; 110: shell Body; 120: receiving cavity; 130: first sound hole; 140: second sound hole;
  • fixed may be a fixed connection, a detachable connection, or an integral body; may It is a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction between two elements, unless it is clearly defined otherwise.
  • fixed may be a fixed connection, a detachable connection, or an integral body; may It is a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction between two elements, unless it is clearly defined otherwise.
  • specific meanings of the above terms in the present invention can be understood according to specific situations.
  • the present invention provides a sound generating device 200.
  • the sound generating device 200 includes a first vibration system 1, a second vibration system 2, and a magnetic circuit system 3.
  • the first vibration system 1 includes a first diaphragm 11 and a skeleton voice coil 12 provided inside the first diaphragm 11.
  • the skeleton voice coil 12 includes a skeleton 122 and a voice coil body 121 formed by winding a voice coil lead onto the skeleton 122.
  • An end of the skeleton 122 far from the first diaphragm 11 is at least partially protruded from the voice coil body 121;
  • the second vibration system 2 includes a second diaphragm (21a, 21b) disposed opposite the first diaphragm 11;
  • the magnetic circuit system 3 is provided between the first diaphragm 11 and the second diaphragm (21a, 21b).
  • the magnetic circuit system 3 is provided with an avoidance portion; the end of the skeleton 122 away from the first diaphragm 11 is movable.
  • the avoidance portion is passed through and fixedly connected to the second diaphragm (21a, 21b).
  • the position when the first diaphragm 11 of the sound generating device 210 is placed upward is used as a reference to define the upper and lower sides, that is, the side of the first diaphragm 11 facing away from the magnetic circuit system 3 is up, and the first The side of a diaphragm 11 facing the magnetic circuit system 3 is downward.
  • the first vibration system 1 can refer to the existing form. Specifically, the skeletal voice coil 12 is fixedly connected to the first diaphragm 11 and extends into the magnetic gap 36. The communication current of the skeletal voice coil 12 is subject to different magnitudes of amperage. Vibration. The vibration of the skeleton voice coil 12 drives the first diaphragm 11 to vibrate.
  • the energy conversion mode is electric energy-mechanical energy-sound energy.
  • the first vibration system 1 may further include a weight.
  • connection between the skeletal voice coil 12 and the first diaphragm 11 or the second diaphragm (21a, 21b) may be glued together, integrally formed by injection molding, or other methods.
  • the first diaphragm 11 and the second diaphragm (21a, 21b) are provided with a dome that is a composite portion
  • the skeleton voice coil 12 may be connected to the composite portion.
  • the shape of the composite portion may be a flat plate shape, an uneven device, or a dome shape.
  • the material of the skeleton 122 in the skeleton voice coil 12 includes, but is not limited to, Paper (paper), Kapton (polyimide (PI) film material), foam material, carbon fiber Materials, metal materials such as aluminum foil / magnesium aluminum alloy / magnesium lithium alloy, PEN (polyethylene naphthalate) / PI (polyimide) / LCP (Liquid Crystal Polymer Polymer) / PC (polycarbonate ) / PPA (Polyphthalamide) and other plastic materials, or porous materials.
  • the processing methods of the connector (4a-4e) include, but are not limited to: winding, blow molding, injection molding, stamping, machining, and 3D printing.
  • the sound generating device 200 further includes a housing 7, a front cover 8, and a rear cover 9, and the housing 7 is used to receive the first vibration System 1, second vibration system 2 and magnetic circuit system 3.
  • the front cover 8 and the rear cover 9 cooperate with the housing 7 to form a protective frame.
  • the edge portion of the first diaphragm 11 for fixing is clamped by the front cover 8 and the housing 7, and the second diaphragm (21a, 21b)
  • the edge portion for fixing is clamped by the back cover 9 and the case 7.
  • the front cover 8 is provided corresponding to the first vibration system 1 and is provided with a front sound hole 81 for emitting sound
  • the rear cover 9 is corresponding to the second vibration system 2 and is provided with a rear sound hole 91 for emitting sound.
  • the sound generating device 200 of the present invention adopts two sets of vibration systems and one set of magnetic circuit systems.
  • the first vibration system 1 includes a skeleton voice coil 12 and a first diaphragm 11 fixed to the skeleton voice coil 12, and a skeleton 122 portion of the skeleton voice coil 12. It protrudes from the voice coil body 121, and the second diaphragm (21a, 21b) in the second vibration system 2 is fixedly connected to the portion of the skeleton 122 protruding from the voice coil body 121.
  • the magnetic circuit system is designed with a skeleton In this way, when the sound generating device 200 works, the first sounding device 12 in the first vibration system 1 is directly driven by the magnetic circuit system 3 to the frame voice coil 12 to vibrate and then make a sound. At the same time, The portion of the skeletal voice coil 12 protruding from the voice coil body 121 can drive the second diaphragm (21a, 21b) in the second vibration system 2 to cooperate to emit sound at the same time.
  • the present invention can drive two diaphragms to realize bidirectional sound through a voice coil and a magnetic circuit system, the structure occupied by the sounding device 200 between the first diaphragm 11 to the second diaphragm (21a, 21b)
  • the small size can adapt to a relatively small installation space, which is convenient for being widely used in portable terminals.
  • the magnetic circuit system includes a magnetically permeable yoke 31 and a central magnetic circuit portion and a side magnetic circuit portion (both not shown) provided on the magnetic yoke 31; a space is formed between the central magnetic circuit portion and the side magnetic circuit portion.
  • the magnetic gap 36 of the skeleton voice coil 12 (see FIGS. 7 and 8), at least one permanent magnet in the central magnetic circuit portion and the side magnetic circuit portion; the skeleton voice coil 12 is housed in the magnetic gap 36 of the magnetic circuit system 3,
  • the yoke 31 is provided with the avoiding portion at a position corresponding to the skeleton voice coil 12.
  • an end of the skeleton 122 far from the first diaphragm 11 passes through the avoidance portion and is fixedly connected to the second diaphragm (21a, 21b).
  • the end of the skeleton 122 near the first diaphragm 11 is connected to the first diaphragm 11, and the portion of the skeleton 122 protruding from the voice coil body 121 can be connected to the second diaphragm (21a, 21b) through the avoidance portion, so that When the skeletal voice coil 12 vibrates, the skeletal voice coil 12 can not only drive the first diaphragm 11 but also the second diaphragm (21a, 21b) to vibrate.
  • the second diaphragms (21a, 21b) are sounded in conjunction with each other.
  • the form of the magnetic circuit system can also refer to the existing structure.
  • the magnetic gap 36 can be formed between the center magnetic steel 32 and the side magnetic steel 33, or the side walls of the center magnetic steel 32 and the magnetic yoke 31. between.
  • the shape of the center magnetic steel 32 in a plan view may be a circle, a rounded rectangle, or the like.
  • a first acoustic cavity 5 is formed between the magnetic circuit system 3 and the first diaphragm 11
  • a second acoustic cavity 6 is formed between the magnetic circuit system 3 and the second diaphragm (21a, 21b); the avoidance part communicates with the First acoustic cavity 5 and second acoustic cavity 6.
  • the avoiding portion communicates with the first sound cavity 5 and the second sound cavity 6, so that the air in the sound generating device 200 can circulate with each other.
  • the difference in air pressure between the first acoustic cavity 5 and the second acoustic cavity 6 is small, and the resistance caused by the vibration of the first diaphragm 11 and the second diaphragm (21a, 21b) is relatively small, so that better acoustic performance can be achieved.
  • the magnetic yoke 31 includes two opposite long sides 311 and two short sides 313, and the long sides 311 are spaced from the short sides 313.
  • the central magnetic circuit portion is located in the middle of the magnetic yoke 31, and the side magnetic circuit portion is located on opposite sides of the central magnetic circuit portion and extends along the long side 311.
  • the magnetic yoke 31 is provided with a avoidance gap 315 corresponding to each short side 313.
  • the skeleton 122 includes a support portion 123 wound with a voice coil lead to form the voice coil body 121, connected to the support portion 123 and protruding from the connection portion 124 of the voice coil body 121, and the connection portion 124 passes through the avoidance gap 315 is fixedly connected to the second diaphragm (21a, 21b).
  • the magnetic yoke 31 of the present invention has an approximately rectangular shape as a whole, and the central magnetic circuit portion and the side magnetic circuit portion are elongated.
  • the central magnetic circuit portion specifically includes the central magnetic steel 32 and a center covering the central magnetic steel 32.
  • the magnetically permeable plate 34, the side magnetic circuit part includes the sub magnetic steel 33 and the side magnetic conductive plate 35 mounted on the sub magnetic steel 33, and the skeleton voice coil 12 is also enclosed in an approximately rectangular parallelepiped shape with chamfers.
  • a central magnetic circuit part constitutes a three magnetic circuit system, and an avoidance gap 315 is provided at both short sides 313 of the magnetic yoke 31, and each of the avoidance gaps 315 is movably provided with a connecting portion 124, so that the sound generating device 200 During the working process, the opposite sides of the skeletal voice coil 12 act on the second diaphragm (21a, 21b) through the connecting portion 124 at the same time, and then the second diaphragm (21a, 21b) is more uniformly stressed, and it is the same as the first diaphragm 11 The consistency of the synchronous motion is higher, and the sound quality of the two-way sound of the sound emitting device 200 is better.
  • the avoidance portion shown in the drawings of the present invention is notch-shaped.
  • the avoidance portion may also be a hole-like structure provided at the two short sides 313 for the connection portion 124 to pass through. It can be understood that the above-mentioned two-way sound generating structure of the present invention can also be applied to a single magnetic circuit system.
  • the end face of the support portion 123 near the first diaphragm 11 is flush with the voice coil.
  • An end face of the body 121 near the first diaphragm 11 or an end face of the support portion 123 near the first diaphragm 11 protrudes from an end face of the voice coil body 121 near the first diaphragm 11.
  • the skeleton voice coil 12 and the first diaphragm 11 have a larger connection contact area (at this time). It may be that the end faces of the voice coil body 121 and the skeleton 123 are connected to the first diaphragm 11 at the same time, and when the connection is made by, for example, an adhesive method, the adhesion is stronger and the connection is more reliable.
  • the end surface of the support portion 123 near the first diaphragm 11 protrudes from the end surface of the voice coil body 121 near the first diaphragm 11, the performance debugging during the assembly process of the sound generating device 200 is facilitated.
  • the side wall of the support portion 123 of the present invention is folded inside the skeletal 122 and / or outside the skeletal 122 to form a mounting flange 1231.
  • the mounting flange 1231 faces away from the bottom surface of the connecting portion 124 and is fixedly connected to the first diaphragm 11.
  • the installation of the flange 1231 can further increase the connection contact area between the end surface of the support portion 123 and the first diaphragm 11. The adhesion of the connection is greater.
  • the two-way sound generating structure of the present invention can be applied to a single magnetic circuit system or a multiple magnetic circuit system (especially a three magnetic circuit system).
  • the skeletal voice coil 12 may be circular or racetrack-shaped.
  • the projection of the support portion 123 on the horizontal plane may be approximately circular or square, and the connection portion 124 is oppositely disposed, for example, disposed on the short side of the square support portion 123.
  • connection flanging 1241 By providing the connection flanging 1241, the connection contact area between the end surface of the connection portion 124 and the second diaphragm (21a, 21b) can be further increased. The adhesion of this connection is greater, and the connection is more stable.
  • FIGS. 16 and 17 Please refer to FIGS. 16 and 17 in combination in order to reduce the weight of the skeletal voice coil 12.
  • at least one notch 1232 is provided on the side wall of the support portion 123, as shown in the drawings. There are two notches 1232.
  • at least one avoidance hole 1242 is provided on the side wall of the connecting portion 124. With the above design, the weight of the skeletal voice coil 12 is obtained. Reduced, thereby improving acoustic performance and reducing manufacturing costs. It can be understood that the design of the avoidance hole 1242 can also facilitate the air circulation in the first acoustic cavity 5 and the second acoustic cavity 6 and reduce the pressure difference, thereby further improving the acoustic performance.
  • the end surface of the support portion 123 far from the first diaphragm 11 is flush with the end surface of the voice coil body 121 far from the first diaphragm, or the support portion 123 is far from the first
  • the end face of a diaphragm 11 does not protrude from the end face of the voice coil body 121 away from the first diaphragm 11 (that is, the position of the voice coil body 121 on the skeleton 122 can be adjusted). This can facilitate the performance of the sounding device 200 during the assembly process. debugging.
  • the skeleton voice coil is approximately rectangular.
  • the skeleton 122 is approximately rectangular.
  • the skeleton 122 includes two long sides and two short sides, and the long sides and the short sides are alternately disposed.
  • the connecting portion 124 may be disposed on a short side thereof. At this time, the connecting portion 124 protrudes from the long side.
  • the voice coil lead can be wound in the skeleton 122 to form a voice coil body. At this time, the voice coil body can be flush with the long side of the skeleton 122.
  • the second diaphragm (21a, 21b) includes a central portion (211a, 211b), a folding ring portion (212a, 212b) provided around the central portion (211a, 211b), and a surrounding folding portion
  • the central portion (211a, 211b) is a flat sheet structure
  • the ring portion is folded 212a is a structure composed of one protrusion
  • the folded ring portion 212b is a wavy structure composed of at least one protrusion and at least one depression.
  • the central portions (211a, 211b) are used to bear the force of the skeleton 122, and the vibration and sound are generated in conjunction with the radiated sound.
  • the central portions (211a, 211b) are set as a flat sheet structure, such a second
  • the diaphragm (21a, 21b) occupies less space in the up-down direction, and the lower surface of the connecting portion 124 and the central portion (211a, 211b) have a larger contact area, while the connecting structure is stable and can generate sufficient amplitude .
  • the second diaphragm (21a, 21b) further includes a composite layer (not labeled) coupled to the central portion (211a, 211b), the lower end of the connecting member (4a-4e) and the composite layer or the central portion (211a, 211b) ) Fixed connection. Setting the composite layer can increase the rigidity of the second diaphragm 21c and ensure the high-frequency performance of the second diaphragm (21a, 21b).
  • the composite layer is made of a material with a higher specific modulus, for example, aluminum composite material, aluminum, aluminum-magnesium alloy, magnesium-lithium alloy material, carbon fiber , PEN (polyethylene naphthalate), LCP (Liquid Crystal Polymer), foam, etc.
  • the first diaphragm 11 includes a central portion, a folded ring portion provided around the central portion, and a fixed portion provided around the folded ring portion.
  • the central portion of the first diaphragm 11 is a planar sheet structure.
  • the folded ring portion is a structure composed of one protrusion, or the folded ring portion is a wavy structure composed of at least one protrusion and at least one depression.
  • the central portion of the first diaphragm 11 is a flat sheet-like structure, the space occupied by the first diaphragm 11 in the up-down direction is small, and a sufficiently large amplitude can be generated.
  • the sound generating device body provided by the present invention forms a thin structure in the up-down direction as a whole, so that it is easier to apply to a flat installation space.
  • the present invention further provides a portable terminal 100 including a housing 110.
  • the housing 110 has a receiving cavity 120 therein.
  • the portable terminal 100 further includes a sound emitting device 210, and a specific structure of the sound emitting device 210.
  • the sound generating device 210 is installed in the accommodating cavity 120.
  • the housing 110 is provided with a first sound hole 130 corresponding to the first diaphragm 11 and a second sound hole 140 corresponding to the second diaphragm (21a, 21b).
  • the first sound hole 130 is opened at a position of the casing 110 directly opposite the first diaphragm 11, and the second sound hole 140 is opened at the housing 110. Is directly opposite the second diaphragm (21a, 21b).
  • the housing 110 includes a front surface and a rear surface opposite to each other, the first sound hole 130 is disposed on the front surface, and the second sound hole 140 is disposed on the reverse surface.

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Abstract

本发明公开一种发声器件和便携终端，其中发声器件包括第一振动系统，第一振动系统包括骨架音圈，骨架音圈设于第一振膜内侧，骨架音圈与第一振膜固定连接，骨架音圈包括骨架和音圈引线缠绕在所述骨架上形成的音圈本体，所述骨架远离所述第一振膜的一端至少部分凸出于所述音圈本体；第二振动系统，包括与所述第一振膜相对设置的第二振膜；以及磁路系统，设于所述第一振膜及第二振膜之间，所述磁路系统设有避让部；所述骨架远离所述第一振膜的一端可活动穿设所述避让部并与所述第二振膜固定连接。本发明发声器件实现双向发声的结构占用的体积小，便于广泛应用于便携终端。

Description

发声器件和便携终端 技术领域
本发明涉及声电技术领域，特别涉及一种发声器件和应用该发声器件的便携终端。
背景技术
目前，扬声器作为具有音频播放功能的终端的重要部件，已得到广泛应用。一些终端，尤其是便携终端，如手机、平板电脑、耳机能够为扬声器提供的安装空间非常有限，因此，现有的能够应用于狭小安装空间的扬声器，通常采用单个振膜正面发声的结构。
而为了实现双向发声，现有技术出现了采用两套音圈及磁路系统的扬声器，这种扬声器由于其自身结构设计，其通常体积比较大，对于现有的具有狭小安装空间的便携终端来说，此类扬声器设计难以得到广泛应用。
发明内容
本发明的主要目的是提供一种发声器件，旨在解决现有的实现双向发声的发声器件因体积较大而难以广泛应用的技术问题。
为实现上述目的，本发明提出的发声器件，包括：
第一振动系统，所述第一振动系统包括骨架音圈，所述骨架音圈设于所述第一振膜内侧，所述骨架音圈与所述第一振膜固定连接，所述骨架音圈包括骨架和音圈引线缠绕在所述骨架上形成的音圈本体，所述骨架远离所述第一振膜的一端至少部分凸出于所述音圈本体；
第二振动系统，包括与所述第一振膜相对设置的第二振膜；以及
磁路系统，设于所述第一振膜及第二振膜之间，所述磁路系统设有避让部；所述骨架远离所述第一振膜的一端可活动穿设所述避让部并与所述第二振膜固定连接。
可选地，所述磁路系统包括导磁轭和设于所述导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所述边磁路部分中的至少一个设有永磁体，所述中心磁路部分和边磁路部分之间形成容纳所述骨架音圈的磁间隙；所述导磁轭对应所述骨架音圈的位置还开设有所述避让部。
可选地，所述磁路系统与所述第一振膜之间形成第一声腔，所述磁路系统与所述第二振膜之间形成第二声腔，所述避让部连通所述第一声腔和第二声腔。
可选地，所述导磁轭包括两相对设置的长侧边以及两短侧边，所述长侧边与所述短侧边间隔设置，所述中心磁路部分位于所述导磁轭中部，所述边磁路部分位于所述中心磁路部分的相对两侧并沿所述长侧边延伸，所述导磁轭对应每一所述短侧边的位置开设有避让缺口形成所述避让部，所述骨架包括缠绕有音圈引线形成音圈本体的支撑部，与所述支撑部连接并凸出于所述音圈本体的连接部，所述连接部穿过所述避让缺口与所述第二振膜固定连接。
可选地，所述连接部的侧壁向所述骨架的内侧和/或向所述骨架的外侧翻折形成连接翻边，所述连接翻边背离所述支撑部的底面与所述第二振膜固定连接。
可选地，所述连接翻边间隔设置有多个，且相邻两个连接翻边的翻折方向相同或不相同。
可选地，所述支撑部的侧壁向所述骨架的内侧和/或向所述骨架的外侧翻折形成安装翻边，所述安装翻边背离所述连接部的底面与所述第一振膜固定连接。
可选地，所述支撑部靠近所述第一振膜的端面平齐于所述音圈本体的靠近所述第一振膜的端面，或，所述支撑部靠近所述第一振膜的端面凸出于所述音圈本体的靠近所述第一振膜的端面。
可选地，所述支撑部远离所述第一振膜的端面平齐于所述音圈本体远离所述第一振膜的端面，或，所述支撑部远离所述第一振膜的端面不凸出于所述音圈本体远离所述第一振膜的端面。
可选地，所述支撑部的侧壁上还开设有缺口。
可选地，所述连接部的侧壁上还开设有避让孔。
可选地，所述第一振膜包括中心部、围绕中心部设置的折环部以及围绕 折环部设置的固定部，所述第一振膜的中心部为平面片状结构，所述折环部为由一个凸起构成的结构，或者所述折环部为由至少一个凸起和至少一个凹陷构成的波浪形结构。
可选地，所述第二振膜包括中心部、围绕中心部设置的折环部以及围绕折环部设置的固定部；所述中心部为平面片状结构，所述折环部为由一个凸起构成的结构，或者所述折环部为由至少一个凸起和至少一个凹陷构成的波浪形结构。
本发明还提出一种便携终端，包括壳体，所述壳体内部具有容置腔，所述便携终端还包括如上述的发声器件，所述发声器件安装在所述容置腔，所述壳体开设有对应所述第一振膜的第一声孔，以及对应所述第二振膜的第二声孔。
可选地，所述壳体包括相对设置的正面和反面，所述第一声孔设置在所述正面上，所述第二声孔设置在所述反面上。
本发明发声器件采用两套振动系统和一套磁路系统，第一振动系统包括骨架音圈和与骨架音圈固定的第一振膜，骨架音圈中的骨架部分凸出于音圈本体，而第二振动系统中的第二振膜与骨架凸出于音圈本体的部分固定连接，同时在磁路系统中设计有与骨架配合的避让部，如此，在发声器件工作时，先由磁路系统对音圈的作用直接驱动第一振动系统中的第一振膜振动进而发声，与此同时，通过骨架音圈的传导驱动下，第二振动系统中的第二振膜联动以同时发声。由于本发明通过一个音圈骨架和一套磁路系统即可驱动两个振膜实现双向发声，使得发声器件在第一振膜至第二振膜之间的结构占用的体积小，能够适应较为狭小的安装空间，便于广泛应用于便携终端。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明发声器件一实施例的正面结构示意图；
图2为图1中发声器件的背面结构示意图；
图3为图1中发声器件的爆炸结构示意图，其中示意了骨架音圈的第一实施例；
图4为图1中发声器件沿长度方向的剖面结构示意图；
图5为图4中A处的局部放大图。
图6为图4中结构的右端放大示意图；其中第二振膜的第一实施例被替换为第二振膜的第二实施例；
图7为图1中发声器件沿宽度方向的剖面结构示意图；
图8为图1中发声器件的磁路系统的装配结构的正面示意图；
图9为图1中发声器件的磁路系统的装配结构的背面示意图；
图10为本发明发声器件的骨架音圈的第一实施例的结构示意图；
图11为本发明发声器件的骨架音圈的第二实施例的结构示意图；
图12为本发明发声器件的骨架音圈的第三实施例的结构示意图；
图13为本发明发声器件的骨架音圈的第四实施例的结构示意图；
图14为本发明发声器件的骨架音圈的第五实施例的结构示意图；
图15为本发明发声器件的骨架音圈的第六实施例的结构示意图；
图16为本发明发声器件的骨架音圈的第七实施例的结构示意图；
图17为本发明发声器件的骨架音圈的第八实施例的结构示意图；
图18为本发明便携终端一实施例的正面结构示意图；
图19为图18中便携终端的背面结构示意图；
图20为图18中B处的局部剖面结构示意图。
附图标号说明：
1：第一振动系统；11：第一振膜；12：音圈；2：第二振动系统；21a，21b：第二振膜；211a，211b：中心部；212a，212b：折环部；213a，213b：固定部；3：磁路系统；31：导磁轭；311：长侧边；313：短侧边；315：避让缺口；32：中心磁钢；33：子磁钢；34：中心导磁板；35：边导磁板；36：磁间隙；12：骨架音圈；121：音圈本体；122：骨架；123：支撑部；1231：安装翻边；1232：缺口；124：连接部；1241：连接翻边；1242：避让孔；7：外壳；8：前盖；81：前出声孔；9：后盖；91：后出声孔；100：便携终端；110：壳体；120：容置腔；130：第一声孔；140：第二声孔；200：发声器件。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
在本发明中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种发声器件200。
在本发明实施例中，如图1至图9所示，该发声器件200包括第一振动系统1、第二振动系统2、磁路系统3，其中，
第一振动系统1包括第一振膜11及设于第一振膜11内侧的骨架音圈12， 骨架音圈12包括骨架122和音圈引线缠绕至所述骨架122上形成的音圈本体121，骨架122远离第一振膜11的一端至少部分凸出于音圈本体121；第二振动系统2包括与第一振膜11相对设置的第二振膜(21a，21b)；
磁路系统3，设于第一振膜11及第二振膜(21a，21b)之间，磁路系统3设有避让部；所述骨架122远离所述第一振膜11的一端可活动穿设所述避让部并与所述第二振膜(21a，21b)固定连接。
在本实施例中，为了简化描述，将发声器件210的第一振膜11朝上放置时的位置为参考界定上下，即第一振膜11背向磁路系统3的一侧为上，第一振膜11朝向磁路系统3的一侧为下。
第一振动系统1可以参考现有的形式，具体的，骨架音圈12与第一振膜11固定连接并伸入磁间隙36，骨架音圈12连通变化的电流则受到不同大小的安培力而振动，骨架音圈12振动带动第一振膜11振动，其能量变换方式是电能—机械能—声能。为了调整振动的频率特性，第一振动系统1还可包括配重块。
骨架音圈12与第一振膜11或第二振膜(21a，21b)之间的连接，可以是胶水粘接，或注塑一体成型连接，或是其他方式。在第一振膜11及第二振膜(21a，21b)设置有复合部即dome的实施例中，骨架音圈12可以与复合部连接。复合部的形状可以为平板状，凹凸纹的装置，或球顶状等。为了在保证强度的前提下降低部件的重量，骨架音圈12中的骨架122的材质包括但不限于Paper(纸质)、Kapton(聚酰亚胺(PI)薄膜材料)、发泡材料、碳纤维材料、铝箔/镁铝合金/镁锂合金等金属材料、PEN(聚萘二甲酸乙二醇酯)/PI(聚酰亚胺)/LCP(Liquid Crystal Polymer液晶聚合物)/PC(聚碳酸酯)/PPA(Polyphthalamide聚邻苯二甲酰胺)等塑性材料、或多孔材料等。连接件(4a-4e)的加工方式包含但不限于：绕制、吹塑、注塑、冲压、机加工、3D打印。
为了方便安装第一振动系统1、第二振动系统2及位于两者之间的磁路系统3，发声器件200还包括外壳7、前盖8及后盖9，外壳7用于收容第一振动系统1、第二振动系统2及磁路系统3。前盖8及后盖9与外壳7配合形成保护框架，具体地，第一振膜11的用于固定的边缘部由前盖8与外壳7夹持，第二振膜(21a，21b)的用于固定的边缘部由后盖9与外壳7夹持。前盖8 对应第一振动系统1设置并设有供声音出射的前出声孔81，后盖9对应第二振动系统2并设有供声音出射的后出声孔91。
本发明发声器件200采用两套振动系统和一套磁路系统，第一振动系统1包括骨架音圈12和与骨架音圈12固定的第一振膜11，骨架音圈12中的骨架122部分凸出于音圈本体121，而第二振动系统2中的第二振膜(21a，21b)与骨架122凸出于音圈本体121的部分固定连接，同时在磁路系统中设计有与骨架122配合的避让部，如此，在发声器件200工作时，先由磁路系统3对骨架音圈12的作用直接驱动第一振动系统1中的第一振膜11振动进而发声，与此同时，骨架音圈12凸出于音圈本体121的部分可以驱动第二振动系统2中的第二振膜(21a，21b)联动以同时发声。由于本发明通过一个音圈和一套磁路系统即可驱动两个振膜实现双向发声，使得发声器件200在第一振膜11至第二振膜(21a，21b)之间的结构占用的体积小，能够适应较为狭小的安装空间，便于广泛应用于便携终端。
进一步的，磁路系统包括导磁轭31和设于导磁轭31上的中心磁路部分和边路磁路部分(均未标示)；中心磁路部分和边路磁路部分之间形成容纳骨架音圈12的磁间隙36(参图7和图8)，中心磁路部分和边磁路部分中的至少一个永磁体；骨架音圈12收容于磁路系统3的磁间隙36中，导磁轭31对应骨架音圈12的位置开设有所述避让部。此时，骨架122远离第一振膜11的一端穿过避让部并与第二振膜(21a，21b)固定连接。这样一来，骨架122靠近第一振膜11的一端与第一振膜11连接，骨架122凸出于音圈本体121部分可以穿过避让部与第二振膜(21a，21b)连接，从而可以在骨架音圈12振动时，骨架音圈12不仅可以驱动第一振膜11振动，还可以驱动第二振膜(21a，21b)振动，实现了在第一振膜11振动发声的同时，使第二振膜(21a，21b)联动发声。
其中，磁路系统的形式也可以参考现有的结构，例如磁间隙36既可以形成在中心磁钢32与边磁钢33之间，也可以形成中心磁钢32与导磁轭31的侧壁之间。中心磁钢32的俯视形状既可以为圆形也可以为圆角矩形等。
进一步的，磁路系统3与第一振膜11之间形成第一声腔5，磁路系统3与第二振膜(21a，21b)之间形成第二声腔6；所述避让部连通所述第一声腔5和第二声腔6。这样一来，在第一振膜11与第二振膜(21a，21b)联动发声的同 时，由于避让部连通第一声腔5与第二声腔6，使得发声器件200内的空气得以相互流通，第一声腔5与第二声腔6的气压差较小，给第一振膜11与第二振膜(21a，21b)的振动造成的阻力也相对较小，从而可以实现更优的声学性能。
请结合参照图3和图8以及图9，所述导磁轭31包括两相对设置的长侧边311以及两短侧边313，长侧边311与短侧边313间隔设置。中心磁路部分位于导磁轭31中部，边磁路部分位于中心磁路部分的相对两侧并沿长侧边311延伸，导磁轭31对应每一短侧边313的位置开设有避让缺口315以形成避让部，所述骨架122包括缠绕有音圈引线形成音圈本体121的支撑部123，与支撑部123连接并凸出于音圈本体121的连接部124，连接部124穿过避让缺口315与第二振膜(21a，21b)固定连接。
具体的，本发明的导磁轭31整体呈近似长方形状，中心磁路部分和边磁路部分呈长条状，中心磁路部分具体包括中心磁钢32和覆盖在中心磁钢32上的中心导磁板34，边磁路部分包括子磁钢33和安装在子磁钢33上的边导磁板35，骨架音圈12也围成具有倒角的近似长方体形状，两个边磁路和一个中心磁路部分构成三磁路系统，并且在导磁轭31的两短侧边313处均开设有避让缺口315，每一避让缺口315均活动穿设有连接部124，如此在发声器件200工作过程中，骨架音圈12的相对两侧通过连接部124同时作用于第二振膜(21a，21b)，则第二振膜(21a，21b)受力较为均匀，与第一振膜11同步运动的一致性更高，发声器件200双向发声的音质更佳。本发明附图展示的避让部为缺口状，于其他实施例，避让部也可以是设置在两短侧边313处可供连接部124穿过的孔状结构。可以理解的，本发明上述的双向发声结构也可以运用到单磁路系统中。
请参照图4和图5以及图10和图11，在本发明的骨架音圈12的第一实施例和第二实施例中，支撑部123靠近第一振膜11的端面平齐于音圈本体121的靠近第一振膜11的端面，或，支撑部123靠近第一振膜11的端面凸出于音圈本体121的靠近第一振膜11的端面。当支撑部123靠近第一振膜11的端面平齐于音圈本体121的靠近第一振膜11的端面时，骨架音圈12与第一振膜11具有更大的连接接触面积(此时可以是音圈本体121和骨架123的端面同时连接第一振膜11)，则采用例如胶粘方式连接时附着力更大，连接更牢靠。当支撑部123靠近第一振膜11的端面凸出于音圈本体121的靠近第一振 膜11的端面时，则便于发声器件200组装过程中的性能调试。
进一步地，为了进一步提升骨架音圈12与第一振膜11连接结构的稳固性，本发明支撑部123的侧壁向骨架122的内侧和/或向骨架122的外侧翻折形成安装翻边1231，安装翻边1231背离连接部124的底面与第一振膜11固定连接。通过安装翻边1231的设置，可以进一步增加支撑部123的端面与第一振膜11的连接接触面积。如此连接的附着力更大。
由上面的内容可知，本发明的双向发声结构可应用于单磁路系统或者多磁路系统(特别是三磁路系统)，请结合参照图12和图13，在本发明的骨架音圈12的第三实施例和第四实施例中，骨架音圈12可以是圆形或者跑道形。其中支撑部123于水平面的投影可以近似为圆形或者方形，而连接部124则相对设置，例如设置在方形的支撑部123的短侧边处。
请结合参照图14和图15，为了提升骨架音圈12与第二振膜(21a，21b)连接结构的稳定性，在本发明的骨架音圈12的第五实施例和第六实施例中，所述连接部124的侧壁向骨架122的内侧和/或向骨架122的外侧翻折形成连接翻边1241，连接翻边1241背离支撑部123的底面与第二振膜(21a，21b)固定连接。进一步地，连接翻边1241间隔设置有多个，且相邻两个连接翻边1241的翻折方向相同或不相同。通过连接翻边1241的设置，可以进一步增加连接部124的端面与第二振膜(21a，21b)的连接接触面积。如此连接的附着力更大，连接更稳固。
请结合参照图16和图17为了减轻骨架音圈12的重量，本发明于骨架音圈12的第七实施例中，在支撑部123的侧壁上开设有至少一个缺口1232，附图中展示的缺口1232为两个，进一步地，本发明骨架音圈12的第八实施例中，在连接部124的侧壁上开设有至少一个避让孔1242，通过以上设计，使得骨架音圈12重量得到降低，从而提升了声学性能，并且降低了生产制造成本。可以理解的，避让孔1242的设计也可以更有利于第一声腔5和第二声腔6内的空气流通，减小压差，从而更进一步提升了声学性能。
进一步地，在骨架音圈12具有上述结构的基础上，所述支撑部123远离第一振膜11的端面平齐于音圈本体121远离第一振膜的端面，或，支撑部123远离第一振膜11的端面不凸出于音圈本体121远离第一振膜11的端面(即音圈本体121于骨架122上的位置可以进行调节)如此可以则便于发声器件 200组装过程中的性能调试。例如，骨架音圈为近似长方形，此时，骨架122即为近似长方形，骨架122包含有两个长侧边和两个短侧边，且长侧边与短侧边交替设置。连接部124可以设置在其短边侧，此时，连接部124凸出于长侧边。音圈引线可绕制在骨架122中形成音圈本体，此时，音圈本体可以与骨架122的长侧边齐平。
进一步地，请参照图6和图7，第二振膜(21a，21b)包括中心部(211a，211b)、围绕中心部(211a，211b)设置的折环部(212a，212b)以及围绕折环部(212a，212b)设置的固定部(213a，213b)；所述中心部(211a，211b)为平面片状结构，在第二振膜的第一及第二实施例中，折环部212a为由一个凸起构成的结构，或者折环部212b为由至少一个凸起和至少一个凹陷构成的波浪形结构。
在本实施例中，中心部(211a，211b)用以承受骨架122的作用力并随之振动发声即联动辐射发声，通过将中心部(211a，211b)设置为平面片状结构，如此第二振膜(21a，21b)在上下方向上占用的空间较小，连接部124的下表面与中心部(211a，211b)具有更大的接触面积，连接结构稳固的同时并且可以产生足够大的振幅。
进一步地，第二振膜(21a，21b)还包括结合于中心部(211a，211b)的复合层(未标示)，连接件(4a-4e)的下端与复合层或中心部(211a，211b)固定连接。设置复合层可以增加第二振膜21c的刚性，保证第二振膜(21a，21b)的高频性能。优选地，为了保证被动辐射的第二振膜(21a，21b)发声性能更优，复合层采用比模量高的材质，例如，铝复合材质，铝，铝镁合金，镁锂合金材质，碳纤维，PEN(聚萘二甲酸乙二醇酯)，LCP(Liquid Crystal Polymer液晶聚合物)，发泡体等。
进一步地，所述第一振膜11包括中心部、围绕中心部设置的折环部以及围绕折环部设置的固定部，所述第一振膜11的中心部为平面片状结构，在第一振膜11的第一及第二实施例中，折环部为由一个凸起构成的结构，或者折环部为由至少一个凸起和至少一个凹陷构成的波浪形结构。相似地，通过将第一振膜11中心部设置为平面片状结构，如此第一振膜11在上下方向上占用的空间较小，并且可以产生足够大的振幅。在结合第二振膜(21a，21b)的中心部也设置为片状结构的实施例后，本发明提供的发声器件体整体上形 成上下方向较薄结构，如此，更易于应用在扁状安装空间。
请参照图18至图20，本发明还提出一种便携终端100，包括壳体110，壳体110内部具有容置腔120，该便携终端100还包括发声器件210，该发声器件210的具体结构参照上述实施例，由于本便携终端100采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。发声器件210安装在容置腔120，壳体110开设有对应第一振膜11的第一声孔130，以及对应第二振膜(21a，21b)的第二声孔140。优选地，为了缩短壳体110内部声音的传播路径，减少声阻，第一声孔130开设于壳体110的与第一振膜11正对的位置，第二声孔140开设于壳体110的与第二振膜(21a，21b)正对的位置。
进一步的，壳体110包括相对设置的正面和反面，第一声孔设置130在正面上，第二声孔140设置在反面上。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (15)

  1. 一种发声器件，其特征在于，包括：
    第一振动系统，所述第一振动系统包括骨架音圈，所述骨架音圈设于所述第一振膜内侧，所述骨架音圈与所述第一振膜固定连接，所述骨架音圈包括骨架和音圈引线缠绕在所述骨架上形成的音圈本体，所述骨架远离所述第一振膜的一端至少部分凸出于所述音圈本体；
    第二振动系统，包括与所述第一振膜相对设置的第二振膜；以及
    磁路系统，设于所述第一振膜及第二振膜之间，所述磁路系统设有避让部；所述骨架远离所述第一振膜的一端可活动穿设所述避让部并与所述第二振膜固定连接。
  2. 如权利要求1所述的发声器件，其特征在于，所述磁路系统包括导磁轭和设于所述导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所述边磁路部分中的至少一个设有永磁体，所述中心磁路部分和边磁路部分之间形成容纳所述骨架音圈的磁间隙；所述导磁轭对应所述骨架音圈的位置还开设有所述避让部。
  3. 如权利要求1所述的发声器件，其特征在于，所述磁路系统与所述第一振膜之间形成第一声腔，所述磁路系统与所述第二振膜之间形成第二声腔，所述避让部连通所述第一声腔和第二声腔。
  4. 如权利要求2所述的发声器件，其特征在于，所述导磁轭包括两相对设置的长侧边以及两短侧边，所述长侧边与所述短侧边间隔设置，所述中心磁路部分位于所述导磁轭中部，所述边磁路部分位于所述中心磁路部分的相对两侧并沿所述长侧边延伸，所述导磁轭对应每一所述短侧边的位置开设有所述避让缺口形成所述避让部，所述骨架包括缠绕有音圈引线形成音圈本体的支撑部，与所述支撑部连接并凸出于所述音圈本体的连接部，所述连接部穿过所述避让缺口与所述第二振膜固定连接。
  5. 如权利要求4所述的发声器件，其特征在于，所述连接部的侧壁向所述骨架的内侧和/或向所述骨架的外侧翻折形成连接翻边，所述连接翻边背离所述支撑部的底面与所述第二振膜固定连接。
  6. 如权利要求5所述的发声器件，其特征在于，所述连接翻边间隔设置有多个，且相邻两个连接翻边的翻折方向相同或不相同。
  7. 如权利要求4所述的发声器件，其特征在于，所述支撑部的侧壁向所述骨架的内侧和/或向所述骨架的外侧翻折形成安装翻边，所述安装翻边背离所述连接部的底面与所述第一振膜固定连接。
  8. 如权利要求4所述的发声器件，其特征在于，所述支撑部靠近所述第一振膜的端面平齐于所述音圈本体的靠近所述第一振膜的端面，或，所述支撑部靠近所述第一振膜的端面凸出于所述音圈本体的靠近所述第一振膜的端面。
  9. 如权利要求4所述的发声器件，其特征在于，所述支撑部远离所述第一振膜的端面平齐于所述音圈本体远离所述第一振膜的端面，或，所述支撑部远离所述第一振膜的端面不凸出于所述音圈本体远离所述第一振膜的端面。
  10. 如权利要求4至9中任意一项所述的发声器件，其特征在于，所述支撑部的侧壁上还开设有缺口。
  11. 如权利要求4至9中任意一项所述的发声器件，其特征在于，所述连接部的侧壁上还开设有避让孔。
  12. 如权利要求1所述的发声器件，其特征在于，所述第一振膜包括中心部、围绕中心部设置的折环部以及围绕折环部设置的固定部，所述第一振 膜的中心部为平面片状结构，所述折环部为由一个凸起构成的结构，或者所述折环部为由至少一个凸起和至少一个凹陷构成的波浪形结构。
  13. 如权利要求1所述的发声器件，其特征在于，所述第二振膜包括中心部、围绕中心部设置的折环部以及围绕折环部设置的固定部；所述中心部为平面片状结构，所述折环部为由一个凸起构成的结构，或者所述折环部为由至少一个凸起和至少一个凹陷构成的波浪形结构。
  14. 一种便携终端，包括壳体，所述壳体内部具有容置腔，其特征在于，所述便携终端还包括如权利要求1至13中任意一项所述发声器件，所述发声器件安装在所述容置腔，所述壳体开设有对应所述第一振膜的第一声孔，以及对应所述第二振膜的第二声孔。
  15. 如权利要求14所述的便携终端，其特征在于，所述壳体包括相对设置的正面和反面，所述第一声孔设置在所述正面上，所述第二声孔设置在所述反面上。
PCT/CN2018/121429 2018-06-25 2018-12-17 发声器件和便携终端 WO2020000930A1 (zh)

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