WO2020098428A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020098428A1
WO2020098428A1 PCT/CN2019/110640 CN2019110640W WO2020098428A1 WO 2020098428 A1 WO2020098428 A1 WO 2020098428A1 CN 2019110640 W CN2019110640 W CN 2019110640W WO 2020098428 A1 WO2020098428 A1 WO 2020098428A1
Authority
WO
WIPO (PCT)
Prior art keywords
folding ring
edge portion
basin
sound
layer
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/110640
Other languages
English (en)
French (fr)
Inventor
肖波
令狐荣林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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 AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020098428A1 publication Critical patent/WO2020098428A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/001—Moulding aspects of diaphragm or surround
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the utility model relates to a sound-emitting device, in particular to a diaphragm of the sound-emitting device.
  • the sound-emitting device of the related art includes a basin stand, a magnetic circuit system and a vibration system provided in the basin stand.
  • the vibration system includes a folding ring provided on the basin frame and a dome covered on the folding ring, the dome is located in the center of the folding ring.
  • the combined strength of the folding ring and the dome is low, and in the case of deep waterproofing, a deflated membrane usually occurs, and there is a greater risk of membrane breakage.
  • the linear range of the vibration system of this structure is narrow, and the product will produce large total harmonic distortion under large amplitude conditions, and the high frequency characteristics are poor.
  • the purpose of the utility model is to provide a sound-generating device with good waterproof performance, large linear range of vibration system, small total harmonic distortion under large amplitude conditions and good high-frequency performance.
  • An audible device includes a basin frame, a magnetic circuit system and a vibration system disposed in the basin frame, the vibration system includes a folding ring disposed on the basin frame, wherein the folding ring includes a A first fold ring on the basin stand and a second fold ring stacked on the first fold ring, the first fold ring includes a first intermediate portion, which is away from the first intermediate portion A first edge portion extending from the first middle portion and a first fixing portion extending away from the first edge portion around the first edge portion, the second folding ring includes a second middle portion, surrounding the second A second edge portion extending away from the second middle portion and a second fixing portion extending away from the second edge portion around the second edge portion, the second middle portion overlapping the On the first middle portion, the second fixing portion is stacked on the first fixing portion, the first edge portion is convex toward the basin frame, and the second edge portion is away from the basin frame The direction is convex, and a closed cavity is formed between the first edge portion and the second edge portion.
  • the basin frame is further provided with an upper cover, and the first fixing portion and the second fixing portion are sandwiched between the basin frame and the upper cover.
  • the height of the second edge portion protruding away from the basin shelf is smaller than the height of the first edge portion protruding towards the basin shelf.
  • the vibration system further includes a dome stacked on the second folding ring, and the dome is adhered to the second intermediate portion.
  • the first folding ring is a layer of thermoplastic polyester elastomer material.
  • the second folding ring has a three-layer structure, and the three-layer structure includes a thermoplastic polyester elastomer material layer, a carbon fiber material layer, and a polyetheretherketone material layer.
  • the first folding ring is at least one layer of polyetheretherketone material
  • the second folding ring is a layer of thermoplastic polyester elastomer material.
  • the dome is a structure using conventional alloy materials such as aluminum alloy, magnesium alloy, magnesium-lithium alloy, aluminum-lithium alloy or titanium alloy, or a structure using conventional polymer materials such as polyethylene and polyester.
  • conventional alloy materials such as aluminum alloy, magnesium alloy, magnesium-lithium alloy, aluminum-lithium alloy or titanium alloy, or a structure using conventional polymer materials such as polyethylene and polyester.
  • the beneficial effect of the utility model lies in that, because the second folding ring is stacked on the first folding ring, a closed space is formed between the second edge part on the second folding ring and the first edge part on the first folding ring Cavity. And because the first folding ring and the second folding ring are made of materials with high resilience, the strength of the entire vibration system is increased, which effectively solves the problems of waterproof collapsing and breaking of the vibration system. In addition, when the width of the folding ring is fixed, the use of double folding ring can expand the linear range of the vibration system, and can effectively reduce the total harmonic distortion of the sound-generating device under the condition of large amplitude.
  • an upper cover is provided on the basin holder so that the first fixing part of the first folding ring and the second fixing part of the second folding ring are sandwiched on the basin holder between the upper cover and the upper cover, the strength of the glue between the first folding ring and the second folding ring and the waterproof and compression level of the sound-generating device are improved.
  • the structure of the second folding ring is formed by extending the dome in the prior art away from the basin, so that it has a larger effective diaphragm area than the dome in the prior art.
  • the second folding ring adopts a material with good elasticity, so that the high-frequency directivity of the speaker in this structure is improved and the listening range is expanded.
  • the arrangement of the second folding ring and the choice of materials make the effective vibration area of the diaphragm under high-frequency radiation of the speaker increase, so that its high frequency can be raised to the ultrasonic frequency band (20-40KHz), which can be used for gestures Identify.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a sound-generating device according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded schematic view of a three-dimensional deconstruction of a sound-generating device according to Embodiment 1 of the present invention.
  • FIG. 3 is a cross-sectional view taken along the A-A direction shown in FIG. 1.
  • FIG. 4 is an enlarged view of part B shown in FIG. 3.
  • FIG. 5 is a schematic diagram of a three-dimensional structure of a sound-generating device according to Embodiment 2 of the present invention.
  • FIG. 6 is a cross-sectional view along the C-C direction shown in FIG. 5.
  • FIG. 7 is an enlarged view of part D shown in FIG. 6.
  • FIG. 8 is a schematic diagram of a three-dimensional structure of a sound-generating device according to an embodiment of the present invention.
  • Fig. 9 is a cross-sectional view taken along the E-E direction shown in Fig. 8.
  • FIG. 10 is an enlarged view of part F shown in FIG. 9.
  • FIG. 11 is an enlarged view of part G shown in FIG. 9.
  • the sound-generating device includes a basin frame 1, a magnetic circuit system 2 and a vibration system 3 provided in the basin frame 1, and conductive terminals 4 fixed to the basin frame 1.
  • the vibration system 3 includes a voice coil 5 and a folding ring 6 disposed on the basin frame 1 and stacked on the voice coil 5.
  • the magnetic circuit system 2 includes a magnetic bowl 21, a main magnetic steel 22 disposed in the magnetic bowl 21, a magnetic conductive plate 23 disposed above the main magnetic steel 22, and auxiliary magnetic steel disposed on opposite sides of the main magnetic steel 22 24 and an upper clamping plate 25 provided above the auxiliary magnet 24, and a magnetic gap 26 is formed between the main magnet 22 and the auxiliary magnet 24.
  • the folding ring 6 includes a first folding ring 7 disposed on the basin frame 1 and a second folding ring 8 stacked on the first folding ring 7.
  • the folding ring 7 includes a first intermediate portion 71 and a first edge portion 72 extending away from the first intermediate portion 71 around the first intermediate portion 71 and a first fixing portion extending away from the first edge portion 72 around the first edge portion 72 73.
  • the second folding ring 8 includes a second intermediate portion 81, a second edge portion 82 extending away from the second intermediate portion 81 around the second intermediate portion 81, and a second edge portion 82 extending away from the second edge portion 82 around the second edge portion 82 ⁇ ⁇ 83 ⁇ The fixed portion 83.
  • the first folding ring 7 and the second folding ring 8 are respectively hot-pressed and formed.
  • the second intermediate portion 81 is superposed on the first intermediate portion 71 and is glued with the first intermediate portion 71 by an adhesive.
  • the second fixing portion 83 is superposed on the first fixing portion 73 and is glued with the first fixing portion 73 by an adhesive.
  • the first edge portion 72 protrudes in the direction of the basin shelf 1, the second edge portion 82 protrudes away from the basin shelf 1, and a closed cavity 9 is formed between the first edge portion 72 and the second edge portion 82.
  • the strength of the entire vibration system is increased, which effectively solves the problems of waterproof collapsing and breaking of the vibration system.
  • the use of double folding ring can expand the linear range of the vibration system, and can effectively reduce the total harmonic distortion of the sound-generating device under the condition of large amplitude.
  • the basin frame 1 ' is also provided with an upper cover 10
  • the upper cover 10 includes an upper cover The body 101 and the metal piece 102 fitted into the upper cover body 101.
  • the first fixing portion 73 'and the second fixing portion 83' are glued and connected between the basin holder 1 'and the upper cover 10. Further, the height H1 of the second edge portion 82 'protruding away from the basin shelf 1' is smaller than the height H2 of the first edge portion 72 'protruding away from the basin shelf 1'.
  • first folding ring 7 ' is made of highly elastic thermoplastic polyester elastomer (TPEE) material
  • second folding ring 8' is a three-layer structure, including a layer of thermoplastic polyester elastomer (TPEE) material and a layer of carbon fiber Material layer and a layer of polyetheretherketone (PEEK) material.
  • TPEE thermoplastic polyester elastomer
  • PEEK polyetheretherketone
  • the upper cover 10 is provided on the basin holder 1 ', so that the first fixing portion 73' of the first folding ring 7 'and the second fixing portion 83' of the second folding ring 8 'are sandwiched between the basin holder 1' and the upper Between the cover 10, the strength of the glue between the first folding ring 7 'and the second folding ring 8' is improved, and the waterproof and compression level of the sound-generating device.
  • the structure of the second folding ring 8 'of the sound-generating device is equivalent to the dome in the prior art.
  • the second folding ring 8' has a similar structure to the first folding ring 7 '. It has a larger effective vibration area than the dome in the prior art.
  • the second folding ring 8 ' is made of a material with good elasticity in the vertical direction and high strength in the horizontal direction, so that the high-frequency directivity of the speaker in this structure is improved and the listening range is expanded.
  • the arrangement of the second folding ring 8 'and the choice of materials make the effective vibration area of the diaphragm under high-frequency radiation of the speaker increase, so that its high frequency can be raised to the ultrasonic frequency band (20-40KHz), which can be used for gestures Identify.
  • the basin frame 1 '' is provided with an upper cover 10 '
  • the upper cover 10' It includes an upper cover body 101 'and a metal piece 102' fitted on the upper cover body 101 '.
  • the first fixing portion 73 '' and the second fixing portion 83 '' are glued and connected between the basin holder 1 '' and the upper cover 10 '.
  • the vibration system 3 '' includes a dome 11 stacked on the second folded ring 8 '', and the dome 11 is adhered to the second intermediate portion 81 ''.
  • the first folding ring 7 '' is a single-layer or two-layer polyether ether ketone (PEEK) material layer, and the two polyether ether ketone (PEEK) material layers are bonded by glue.
  • the second folding ring 8 '' is a layer of thermoplastic polyester elastomer material (TPEE) with high resilience.
  • TPEE thermoplastic polyester elastomer material
  • the arrangement of the upper cover 10 ' is such that the first fixing portion 73' 'of the first folding ring 7' 'and the second fixing portion 83' 'of the second folding ring 8' 'are sandwiched between the basin holder 1' 'and between the upper cover 10 ', the strength of the glue between the first folding ring 7 "and the second folding ring 8" and the waterproof and compression level of the sound-emitting device are further improved.
  • the second folding ring is stacked on the first folding ring, a closed cavity is formed between the second edge portion on the second folding ring and the first edge portion on the first folding ring.
  • the first folding ring and the second folding ring are made of materials with high resilience, the strength of the entire vibration system is increased, which effectively solves the problems of waterproof collapsing and breaking of the vibration system.
  • the use of double folding ring can expand the linear range of the vibration system, and can effectively reduce the total harmonic distortion of the sound-generating device under the condition of large amplitude.
  • an upper cover is provided on the basin holder so that the first fixing part of the first folding ring and the second fixing part of the second folding ring are sandwiched on the basin holder between the upper cover and the upper cover, the strength of the glue between the first folding ring and the second folding ring and the waterproof and compression level of the sound-generating device are improved.
  • the structure of the second folding ring is formed by extending the dome in the prior art away from the basin, so that it has a larger effective diaphragm area than the dome in the prior art.
  • the second folding ring adopts a material with good elasticity, so that the high-frequency directivity of the speaker in this structure is improved and the listening range is expanded.
  • the arrangement of the second folding ring and the choice of materials make the effective vibration area of the diaphragm under high-frequency radiation of the speaker increase, so that its high frequency can be raised to the ultrasonic frequency band (20-40KHz), which can be used for gestures Identify.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本实用新型公开了一种发声器件，其包括盆架，设于盆架内的磁路系统和振动系统，振动系统包括设于盆架上的折环。其中，折环包括设于盆架上的第一折环以及叠设于第一折环上的第二折环，第一折环包括第一中间部，围绕第一中间部向远离第一中间部延伸的第一边缘部以及围绕第一边缘部向远离第一边缘部延伸的第一固定部，第二折环包括第二中间部，围绕第二中间部向远离第二中间部延伸的第二边缘部以及围绕第二边缘部向远离第二边缘部延伸的第二固定部，第一边缘部和第二边缘部之间形成密闭的空腔。本实用新型发声器件结构合理，双折环振动系统强度大，防水性能好，振动系统线性范围大，大振幅条件下发声器件总谐波失真小并且高频表现良好。

Description

发声器件 技术领域
本实用新型涉及一种发声器件，尤其涉及一种发声器件的振膜。
 背景技术
在移动电话等便携设备快速发展的过程中，人们对产品的功能性要求越来越强，特别对产品的发声性能提出了更多的要求，因此，运用于其中的发声器件的发展也越来越快。
 技术问题
相关技术的发声器件包括盆架，设于所述盆架内的磁路系统和振动系统。其中，所述振动系统包括设于所述盆架上的折环以及盖设于所述折环上的球顶，所述球顶位于所述折环的中央。在这种结构的发声器件中，折环和球顶的组合强度较低，在深度防水的情况下通常会发生瘪膜的情况，有较大的破膜风险。此外，该结构振动系统的线性范围较窄，在大振幅条件下产品会产生较大的总谐波失真，并且高频特性较差。
因此，有必要提供一种新的技术方案来克服上述的技术问题。
 技术解决方案
本实用新型的目的在于提供一种防水性能好，振动系统线性范围大，大振幅条件下总谐波失真小并且高频表现良好的发声器件。
本实用新型的技术方案如下：
一种发声器件，其包括盆架，设于所述盆架内的磁路系统和振动系统，所述振动系统包括设于所述盆架上的折环，其中，所述折环包括设于所述盆架上的第一折环以及叠设于所述第一折环上的第二折环，所述第一折环包括第一中间部，围绕所述第一中间部向远离所述第一中间部延伸的第一边缘部以及围绕所述第一边缘部向远离所述第一边缘部延伸的第一固定部，所述第二折环包括第二中间部，围绕所述第二中间部向远离所述第二中间部延伸的第二边缘部以及围绕所述第二边缘部向远离所述第二边缘部延伸的第二固定部，所述第二中间部叠设于所述第一中间部上，所述第二固定部叠设于所述第一固定部上，所述第一边缘部向所述盆架方向凸起，所述第二边缘部向远离所述盆架方向凸起，所述第一边缘部和所述第二边缘部之间形成密闭的空腔。
优选的，所述盆架上还设有上盖，所述第一固定部和所述第二固定部夹设于所述盆架和所述上盖之间。
优选的，所述第二边缘部向远离所述盆架方向凸起的高度小于所述第一边缘部向所述盆架方向凸起的高度。
优选的，所述振动系统还包括叠设于所述第二折环上的球顶，所述球顶粘接于所述第二中间部上。
优选的，所述第一折环为热塑性聚酯弹性体材料层。
优选的，所述第二折环为三层结构，所述三层结构包括一层热塑性聚酯弹性体材料层，一层碳纤维材料层以及一层聚醚醚酮材料层。
优选的，所述第一折环为至少一层的聚醚醚酮材料层，所述第二折环为热塑性聚酯弹性体材料层。
优选的，所述球顶是采用铝合金、镁合金、镁锂合金、铝锂合金或钛合金等常规合金材料的结构或是采用聚乙烯、聚酯等常规聚合物材料的结构。
 有益效果
本实用新型的有益效果在于：由于在第一折环上叠设了第二折环，第二折环上的第二边缘部和第一折环上的第一边缘部之间形成密闭的空腔。并且由于第一折环和第二折环采用了回弹性高的材料，使得整个振动系统的强度增加，有效的解决了振动系统防水瘪膜，破膜的问题。此外，在折环宽度一定的情况下，双折环的使用能够扩大振动系统的线性范围，在大振幅情况下能有效降低发声器件的总谐波失真。
其次，在上述第一折环以及第二折环的基础上，在盆架上设置上盖，使得第一折环的第一固定部和第二折环的第二固定部夹设于盆架和上盖之间，提高第一折环和第二折环之间胶合的强度以及发声器件的防水抗压等级。此外，在该种情况下，第二折环的结构是通过现有技术中的球顶向远离盆架方向延伸形成，使得其具有比现有技术当中的球顶更大的有效振膜面积，并且该第二折环采用具有良好弹性的材料，使得该结构情况下的扬声器的高频指向性得到改善并且听音范围得到扩大。此外，第二折环的设置方式及材料的选择使得扬声器高频辐射下振膜的有效振动面积得到增大，使其高频能够提升到超声频段（20-40KHz），从而能够被用于手势识别。
 附图说明
图1为本实用新型实施例一发声器件立体结构示意图。
图2为本实用新型实施例一发声器件立体解构分解示意图。
图3为图1所示沿A-A方向的剖视图。
图4为图3所示B部分的放大图。
图5为本实用新型实施例二发声器件立体结构示意图。
图6为图5所示沿C-C方向的剖视图。
图7为图6所示D部分的放大图。
图8为本实用新型实施例三发声器件立体结构示意图。
图9为图8所示沿E-E方向的剖视图。
图10为图9所示F部分的放大图。
图11为图9所示G部分的放大图。
 本发明的实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
如图1-4为本实用新型实施例一的发声器件，其包括盆架1，设于盆架1内的磁路系统2和振动系统3以及固定于盆架1的导电端子4。振动系统3包括音圈5以及设于盆架1上并且叠设于音圈5上的折环6。其中，磁路系统2包括磁碗21，设于磁碗21内的主磁钢22，设于主磁钢22上方的导磁板23，设于主磁钢22四周相对两侧的副磁钢24以及设于副磁钢24上方的上夹板25，主磁钢22和副磁钢24之间形成磁间隙26。
如图2-4所示，折环6包括设于盆架1上的第一折环7及叠设于第一折环7的第二折环8。折环7包括第一中间部71以及围绕第一中间部71向远离第一中间部71延伸的第一边缘部72以及围绕第一边缘部72向远离第一边缘部72延伸的第一固定部73。第二折环8包括第二中间部81，围绕第二中间部81向远离第二中间部81延伸的第二边缘部82以及围绕第二边缘部82向远离第二边缘部82延伸的第二固定部83。其中，第一折环7和第二折环8分别热压成型。第二中间部81叠设于第一中间部71上，并与第一中间部71通过粘接剂胶合。第二固定部83叠设于第一固定部73上，并与第一固定部73通过粘接剂胶合。第一边缘部72向盆架1方向凸起，第二边缘部82远离盆架1方向凸起，第一边缘部72第二边缘部82间形成密闭的空腔9。使得整个振动系统的强度增加，有效的解决了振动系统防水瘪膜，破膜的问题。此外，在折环宽度一定的情况下，双折环的使用能够扩大振动系统的线性范围，在大振幅情况下能有效降低发声器件的总谐波失真。
如图5-7为本实用新型第二实施例的发声器件，与实施例一发声器件结构基本相同，不同的地方在于：盆架1’上还设有上盖10，上盖10包括上盖本体101以及嵌合于上盖本体101的金属片102。第一固定部73’和第二固定部83’胶合连接后夹设于盆架1’和上盖10之间。并且，第二边缘部82’向远离盆架1’方向凸起的高度H1小于第一边缘部72’向盆架1’方向凸起的高度H2。此外，第一折环7’采用高弹性的热塑性聚酯弹性体（TPEE）材料，第二折环8’为三层结构，包括一层热塑性聚酯弹性体（TPEE）材料层，一层碳纤维材料层以及一层聚醚醚酮（PEEK）材料层。双折环以及高弹性材料的应用，使得振动系统的整体强度得到提升。
此外，盆架1’上设有上盖10，使得第一折环7’的第一固定部73’和第二折环8’的第二固定部83’夹设于盆架1’和上盖10之间，提高第一折环7’和第二折环8’之间胶合的强度以及发声器件的防水抗压等级。
进一步的，该结构发声器件的第二折环8’结构上相当于现有技术当中的球顶，不同之处在于，第二折环8’同第一折环7’有着类似的结构，其具有比现有技术当中的球顶更大的有效振动面积。并且该第二折环8’采用垂直方向强度软，水平方向强度高的具有良好弹性的材料，使得该结构情况下的扬声器的高频指向性得到改善并且听音范围得到扩大。
第二折环8’的设置方式及材料的选择使得扬声器高频辐射下振膜的有效振动面积得到增大，使其高频能够提升到超声频段（20-40KHz），从而能够被用于手势识别。
如图8-11为本实用新型第三实施例的发声器件，与实施例一的发声器件结构基本相同，不同的地方在于：盆架1’’上设有上盖10’，上盖10’包括上盖本体101’以及嵌合于上盖本体101’的金属片102’。第一固定部73’’和第二固定部83’’胶合连接后夹设于盆架1’’和上盖10’之间。并且，振动系统3’’包括叠设于第二折环8’’上的球顶11，球顶11粘接于第二中间部81’’上。
该结构当中第一折环7’’为单层或两层聚醚醚酮（PEEK）材料层，两层聚醚醚酮（PEEK）材料层之间通过胶水粘合。第二折环8’’为回弹性高的热塑性聚酯弹性体材料（TPEE）层。双折环以及高回弹性材料的应用，使得振动系统的整体强度得到提升。有效的解决了振动系统防水瘪膜，破膜的问题，并且，该结构能够扩大振动系统的线性范围，大振幅情况下能有效降低发声器件的总谐波失真。进一步的，上盖10’的设置使得第一折环7’’的第一固定部73’’和第二折环8’’的第二固定部83’’夹设于盆架1’’和上盖10’之间，进一步提高第一折环7’’和第二折环8’’之间胶合的强度以及发声器件的防水抗压等级。
综上，由于在第一折环上叠设了第二折环，第二折环上的第二边缘部和第一折环上的第一边缘部之间形成密闭的空腔。并且由于第一折环和第二折环采用了回弹性高的材料，使得整个振动系统的强度增加，有效的解决了振动系统防水瘪膜，破膜的问题。此外，在折环宽度一定的情况下，双折环的使用能够扩大振动系统的线性范围，在大振幅情况下能有效降低发声器件的总谐波失真。
其次，在上述第一折环以及第二折环的基础上，在盆架上设置上盖，使得第一折环的第一固定部和第二折环的第二固定部夹设于盆架和上盖之间，提高第一折环和第二折环之间胶合的强度以及发声器件的防水抗压等级。此外，在该种情况下，第二折环的结构是通过现有技术中的球顶向远离盆架方向延伸形成，使得其具有比现有技术当中的球顶更大的有效振膜面积，并且该第二折环采用具有良好弹性的材料，使得该结构情况下的扬声器的高频指向性得到改善并且听音范围得到扩大。此外，第二折环的设置方式及材料的选择使得扬声器高频辐射下振膜的有效振动面积得到增大，使其高频能够提升到超声频段（20-40KHz），从而能够被用于手势识别。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (8)

  1. 一种发声器件，其包括盆架，设于所述盆架内的磁路系统和振动系统，所述振动系统包括设于所述盆架上的折环，其特征在于：所述折环包括设于所述盆架上的第一折环以及叠设于所述第一折环上的第二折环，所述第一折环包括第一中间部，围绕所述第一中间部向远离所述第一中间部延伸的第一边缘部以及围绕所述第一边缘部向远离所述第一边缘部延伸的第一固定部；
    所述第二折环包括第二中间部，围绕所述第二中间部向远离所述第二中间部延伸的第二边缘部以及围绕所述第二边缘部向远离所述第二边缘部延伸的第二固定部，所述第二中间部叠设于所述第一中间部上，所述第二固定部叠设于所述第一固定部上，所述第一边缘部向所述盆架方向凸起，所述第二边缘部向远离所述盆架方向凸起，所述第一边缘部和所述第二边缘部之间形成密闭的空腔。
  2. 根据权利要求1所述的发声器件，其特征在于：所述盆架上还设有上盖，所述第一固定部和所述第二固定部夹设于所述盆架和所述上盖之间。
  3. 根据权利要求2所述的发声器件，其特征在于：所述第二边缘部向远离所述盆架方向凸起的高度小于所述第一边缘部向所述盆架方向凸起的高度。
  4. 根据权利要求2所述的发声器件，其特征在于：所述振动系统还包括叠设于所述第二折环上的球顶，所述球顶粘接于所述第二中间部上。
  5. 根据权利要求3所述的发声器件，其特征在于：所述第一折环为热塑性聚酯弹性体材料层。
  6. 根据权利要求5所述的发声器件，其特征在于：所述第二折环为三层结构，所述三层结构包括一层热塑性聚酯弹性体材料层，一层碳纤维材料层以及一层聚醚醚酮材料层。
  7. 根据权利要求4所述的发声器件，其特征在于：所述第一折环为至少一层的聚醚醚酮材料层，所述第二折环为热塑性聚酯弹性体材料层。
  8. 根据权利要求4所述的发声器件，其特征在于：所述球顶是采用铝合金、镁合金、镁锂合金、铝锂合金或钛合金等常规合金材料的结构或是采用聚乙烯、聚酯等常规聚合物材料的结构。
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