WO2020140581A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020140581A1
WO2020140581A1 PCT/CN2019/113550 CN2019113550W WO2020140581A1 WO 2020140581 A1 WO2020140581 A1 WO 2020140581A1 CN 2019113550 W CN2019113550 W CN 2019113550W WO 2020140581 A1 WO2020140581 A1 WO 2020140581A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer diameter
sound
voice coil
membrane
dome
Prior art date
Application number
PCT/CN2019/113550
Other languages
English (en)
French (fr)
Inventor
廖焕彬
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)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 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020140581A1 publication Critical patent/WO2020140581A1/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
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • 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
    • 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; 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
    • 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
    • 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
    • H04R31/006—Interconnection of transducer parts
    • 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
    • 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
    • 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
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider

Definitions

  • the utility model relates to the technical field of electronic equipment, in particular to a sound-emitting device.
  • the frequency response sensitivity of the three magnetic circuit design of the speaker in the related art is not as good as the five magnetic circuit, so the conventional design of the three magnetic circuit speaker will have a larger inner diameter of the voice coil than the inner diameter of the five magnetic circuit speaker to balance the difference in overall sensitivity . If the inner diameter of the voice coil is too large, it is often easy to aggravate the high-frequency division vibration of the speaker, resulting in obvious pits in the high-frequency frequency response of the three-magnetic speaker, which reduces the acoustic performance of the product.
  • the purpose of the present invention is to overcome the above technical problems and provide a sound-generating device with better acoustic performance.
  • the present invention provides a sound-generating device, including a basin frame, a magnetic circuit system and a vibration system fixed to the basin frame, the vibration system includes a sound membrane and drives the sound membrane to vibrate Voice coil, the voice membrane includes a diaphragm and a dome fixed to the diaphragm, the voice coil includes a first surface close to the side of the voice membrane and a second side away from the side of the voice membrane Surface, the outer diameter of the voice coil on the first surface is a first outer diameter, the outer diameter of the voice coil on the second surface is a second outer diameter, and the first outer diameter is less than In the second outer diameter, the outer diameter of the dome is greater than or equal to the second outer diameter.
  • the voice coil includes a first portion close to the sound membrane and a second portion away from the sound membrane, the first surface is located on the first portion, the second surface is located on the On the second part, the The outer diameter of the first part is equal to the first outer diameter, and the outer diameter of the second part is equal to the second outer diameter.
  • the first part and the second part are formed by winding continuous voice coil leads, and the number of winding turns of the second part is greater than the number of winding turns of the first part.
  • the diaphragm includes a folded ring portion, an intermediate portion disposed inside the folded ring portion and a fixed portion disposed outside the folded ring portion, the first surface of the voice coil is fixed In the middle portion, the dome is attached to a side of the middle portion away from the voice coil.
  • the outer diameter of the intermediate portion is greater than or equal to the outer diameter of the dome.
  • the sound-generating device provided by the present invention improves the high-frequency pits of the sound-generating device by changing the wiring mode of the voice coil, that is, the outermost layer of the voice coil is unsatisfactoryly wound and is at the outermost of the voice coil
  • the layer is free of the glued surface of the dome, which reduces the area where the voice coil and the dome are glued together, thereby reducing the high-frequency division vibration of the dome and improving the high-frequency frequency response of the sound-generating device provided by the present invention.
  • FIG. 1 is an exploded view of a sound-generating device provided by the utility model
  • FIG. 2 is a cross-sectional view of a sound-generating device provided by the utility model
  • FIG. 3 is an enlarged view of FIG. 2;
  • FIG. 4 is a comparison diagram of the frequency response curve of the related art and the sound-generating device provided by the present invention.
  • the present invention provides a sound-emitting device 100, including a basin frame 1, a magnetic circuit system 2 and a vibration system 3 fixed to the basin frame 1.
  • the magnetic circuit system 2 includes a yoke 22, a magnetic steel 21 fixed to the yoke 22, and a pole core 23 attached to the surface of the magnetic steel 21,
  • the magnet 21 includes a main magnet 211 located in the center and two auxiliary magnets 212 disposed on opposite sides of the main magnet 211, the main magnet 211 and the auxiliary magnet 212 are spaced apart A magnetic gap is formed, and the auxiliary magnetic steel 212 is a bar-shaped magnetic steel.
  • the pole core 23 is made of a magnetically conductive material, used to play a magnetic permeability, converge the magnetic field, and improve the magnetic induction performance of the product.
  • the pole core 23 includes a main pole core 231 attached to the main magnetic steel 211 and a sub pole core 232 attached to the auxiliary magnetic steel 212.
  • the secondary pole core 232 is a ring-shaped pole core, which is attached to the two strip-shaped secondary magnetic steels 212.
  • the vibration system 3 includes a sound membrane 31 and a voice coil 32 that drives the sound membrane 31 to vibrate, the sound membrane 31 includes a dome 311 and a diaphragm 312, and the voice coil 32 is inserted into the magnetic gap During the energization process, the voice coil 32 is forced in the magnetic gap to drive the voice membrane 31 to vibrate and sound in the vertical direction.
  • the diaphragm 312 includes a folded ring portion 3121, an intermediate portion 3122 disposed inside the folded ring portion 3121, and a fixed portion 3123 disposed outside the folded ring portion 3121, the dome 311 is fixed On the side of the middle portion 3122 away from the voice coil 32, the fixing portion 3123 is fixed to the basin frame 1.
  • the voice coil 32 includes a first surface 3211 close to the sound film 31 and a second surface 32 21 away from the sound film 31, preferably, the first surface 3211 of the voice coil 32 is fixed ⁇ Middle part 3122.
  • the outer diameter of the voice coil 32 on the first surface 3211 is a first outer diameter d1
  • the outer diameter of the voice coil 32 on the second surface 3221 is a second outer diameter d2
  • the first outer diameter dl is smaller than the second outer diameter d2
  • the outer diameter d3 of the dome 311 is greater than or equal to the second outer diameter d2.
  • the voice coil 32 includes a first portion 321 close to the sound film 31 and a second portion 322 away from the sound film 31, the first surface 3211 is located on the first portion 321, so The second surface 3221 is located on the second portion 322, the outer diameters of the first portion 321 are all equal to the first outer diameter d1, and the outer diameters of the second portion 322 are all equal to the second outer diameter d2 .
  • the first part 321 and the second part 322 are formed by winding continuous voice coil leads, and the number of winding turns of the second part 322 is greater than the number of winding turns of the first part 321.
  • the outermost lead of the voice coil 32 is the penultimate first layer, and the penultimate first layer lead of the voice coil 32 is approached by the penultimate layer lead of the voice coil 32
  • the top end of the sound film 31 is formed by being obliquely drawn and wound away from the sound film 31, which ultimately reduces the number of lead layers glued between the voice coil lead and the sound film 31, and reduces the voice coil 32 and the
  • the glued area of the sound film 31 reduces the high-frequency division vibration of the dome 311 and improves the high-frequency frequency response of the sound-generating device 100.
  • FIG. 4 is a comparison diagram of the frequency response curve of the related art and the sound emitting device provided by the present invention.
  • curve I is the frequency response curve of the three-magnetic-circuit sound-emitting device in the related art
  • curve II is the frequency response curve of the sound-emitting device 100 provided by the present invention.
  • curve I and curve II are at 13KHz
  • the split vibration of curve II is lighter than that of curve I
  • the frequency response valley of curve II is shallower than curve I.
  • the outer diameter d4 of the intermediate portion 3122 is greater than or equal to the outer diameter d3 of the dome 311, so that the risk of the dome 311 hitting the folding ring portion 3121 can be avoided.
  • the vibration system 3 further includes an auxiliary diaphragm 33 and a centering support piece 34, one end of the centering support piece 34 is fixed to the voice coil 32, and the other end is fixed to the basin frame 1.
  • the auxiliary diaphragm 33 is fixed on the side of the centering support piece 34 away from the voice coil 32.
  • the sound-generating device provided by the present invention improves the high-frequency pits of the sound-generating device by changing the wiring mode of the voice coil, that is, the outermost layer of the voice coil is unsatisfactoryly wound and the outermost of the voice coil
  • the layer is free of the glued surface of the dome, which reduces the area where the voice coil and the dome are glued together, thereby reducing the high-frequency division vibration of the dome and improving the high-frequency frequency response of the sound-generating device provided by the present invention.

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

Abstract

本实用新型提供一种发声器件，包括盆架，固设于所述盆架的磁路系统和振动系统，所述振动系统包括音膜和驱动所述音膜振动的音圈，所述音膜包括振膜和固设于所述振膜的球顶，所述音圈包括靠近所述音膜一侧的第一表面及远离所述音膜一侧的第二表面，所述音圈在所述第一表面上的外径为第一外径，所述音圈在所述第二表面上的外径为第二外径，所述第一外径小于所述第二外径，所述球顶的外径大于或等于所述第二外径。本实用新型提供的发声器件声学性能更佳。

Description

发声器件 技术领域
[0001] 本实用新型涉及电子设备技术领域， 尤其涉及一种发声器件。
背景技术
[0002] 随着移动互联网时代的到来， 智能移动设备的数量不断上升。 而在众多移动设 备之中， 手机无疑是最常见、 最便携的移动终端设备。 目前， 手机的功能及其 多样， 其中之一便是高品质的音乐功能， 而手机中的扬声器便是实现这个高品 质音乐功能的必备条件之一。
[0003] 相关技术中的扬声器三磁路设计频响灵敏度不及五磁路， 所以三磁路扬声器常 规设计上音圈内径会比五磁路扬声器的音圈内径更大， 以平衡整体灵敏度的差 异。 而音圈内径过大， 往往容易加剧扬声器的高频分割振动， 从而导致三磁路 扬声器的高频频响容易出现明显的凹坑， 降低了产品的声学性能。
[0004] 因此， 有必要提供一种新的发声器件来解决上述问题。
发明概述
技术问题
[0005] 本实用新型的目的是克服上述技术问题， 提供一种声学性能更佳的发声器件。
问题的解决方案
技术解决方案
[0006] 为了实现上述目的， 本实用新型提供一种发声器件， 包括盆架， 固设于所述盆 架的磁路系统和振动系统， 所述振动系统包括音膜和驱动所述音膜振动的音圈 ， 所述音膜包括振膜和固设于所述振膜的球顶， 所述音圈包括靠近所述音膜一 侧的第一表面及远离所述音膜一侧的第二表面， 所述音圈在所述第一表面上的 外径为第一外径， 所述音圈在所述第二表面上的外径为第二外径， 所述第一外 径小于所述第二外径， 所述球顶的外径大于或等于所述第二外径。
[0007] 优选的， 所述音圈包括靠近所述音膜的第一部分和远离所述音膜的第二部分， 所述第一表面位于所述第一部分上， 所述第二表面位于所述第二部分上， 所述 第一部分的外径均等于所述第一外径， 所述第二部分的外径均等于所述第二外 径。
[0008] 优选的， 所述第一部分和所述第二部分为连续的音圈引线缠绕而成， 所述第二 部分的缠绕圈数大于所述第一部分的缠绕圈数。
[0009] 优选的， 所述振膜包括折环部、 设置于所述折环部内侧的中间部及设置于所述 折环部的外侧的固定部， 所述音圈的第一表面固接于所述中间部， 所述球顶贴 设于所述中间部远离所述音圈的一侧。
[0010] 优选的， 所述中间部的外径大于或等于所述球顶的外径。
发明的有益效果
有益效果
[0011] 与相关技术相比， 本实用新型提供的发声器件通过改变音圈排线方式从而对发 声器件的高频凹坑进行改善， 即将音圈最外层不满绕且在音圈的最外层空出球 顶胶合面， 使得音圈与球顶面相胶合的面积减小， 从而减弱了球顶在高频的分 割振动， 改善了本实用新型提供的发声器件的高频频响。
对附图的简要说明
附图说明
[0012] 为了更清楚地说明本实用新型实施例中的技术方案， 下面将对实施例描述中所 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实用 新型的一些实施例， 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获得其它的附图， 其中：
[0013] 图 1为本实用新型提供的发声器件的分解图；
[0014] 图 2为本实用新型提供的发声器件的剖视图；
[0015] 图 3为图 2的放大图；
[0016] 图 4为相关技术与本实用新型提供的发声器件的频响曲线对比图。
发明实施例
具体实施方式
[0017] 下面将结合本实用新型实施例中的附图， 对本实用新型实施例中的技术方案进 行清楚、 完整地描述， 显然， 所描述的实施例仅是本实用新型的一部分实施例 ， 而不是全部的实施例。 基于本实用新型中的实施例， 本领域普通技术人员在 没有做出创造性劳动前提下所获得的所有其它实施例， 都属于本实用新型保护 的范围。
[0018] 请结合参阅图 1、 图 2和图 3 , 本实用新型提供了一种发声器件 100, 包括盆架 1 ， 固设于所述盆架 1的磁路系统 2和振动系统 3。
[0019] 所述磁路系统 2包括磁轭 22、 固设于所述磁轭 22的磁钢 21及贴附于所述磁钢 21 表面的极芯 23，
[0020] 所述磁钢 21包括位于中央的主磁钢 211和设置于所述主磁钢 211相对两侧的两副 磁钢 212, 所述主磁钢 211与所述副磁钢 212间隔设置形成磁间隙， 所述副磁钢 21 2为条形磁钢。
[0021] 所述极芯 23为导磁材料制成， 用于起到导磁作用， 汇聚磁场， 提高产品的磁感 应性能。 所述极芯 23包括贴设在所述主磁钢 211上的主极芯 231和贴设在所述副 磁钢 212上的副极芯 232。 在本实施方式中， 所述副极芯 232为一环状极芯， 贴设 在两个条形的所述副磁钢 212之上。
[0022] 所述振动系统 3包括音膜 31和驱动所述音膜 31振动的音圈 32, 所述音膜 31包括 球顶 311和振膜 312, 所述音圈 32插入所述磁间隙内， 所述音圈 32在通电过程中 在所述磁间隙内受力， 驱动所述音膜 31沿竖直方向振动发声。
[0023] 所述振膜 312包括折环部 3121、 设置于所述折环部 3121内侧的中间部 3122及设 置于所述折环部 3121的外侧的固定部 3123 , 所述球顶 311固设于所述中间部 3122 远离所述音圈 32的一侧， 所述固定部 3123固设于所述盆架 1。
[0024] 所述音圈 32包括靠近所述音膜 31的第一表面 3211及远离所述音膜 31第二表面 32 21， 优选的， 所述音圈 32的所述第一表面 3211固接于所述中间部 3122。
[0025] 所述音圈 32在所述第一表面 3211上的外径为第一外径 dl， 所述音圈 32在所述第 二表面 3221上的外径为第二外径 d2, 所述第一外径 dl小于所述第二外径 d2, 所 述球顶 311的外径 d3大于或等于所述第二外径 d2。 这样的结构， 使所述音圈 32与 所述音膜 31胶合固定的面积减小， 使所述音圈 32的外径变相的减小， 从而减弱 了所述球顶 311在高频的分割振动， 改善所述发声器件 100的高频频响。 [0026] 具体的， 所述音圈 32包括靠近所述音膜 31的第一部分 321和远离所述音膜 31的 第二部分 322, 所述第一表面 3211位于所述第一部分 321上， 所述第二表面 3221 位于所述第二部分 322上， 所述第一部分 321的外径均等于所述第一外径 dl， 所 述第二部分 322的外径均等于所述第二外径 d2。 具体的， 所述第一部分 321和所 述第二部分 322为连续的音圈引线缠绕而成， 而且所述第二部分 322的缠绕圈数 大于所述第一部分 321的缠绕圈数。 在本实施例中， 以所述音圈 32的最外层引线 为倒数第一层， 所述音圈 32的倒数第一层引线由所述音圈 32的倒数第二层引线 上靠近所述音膜 31的顶端处向远离所述音膜 31的方向斜拉缠绕而成， 最终使得 音圈引线与所述音膜 31胶合的引线层数减少， 减小了所述音圈 32与所述音膜 31 的胶合面积， 从而减弱了所述球顶 311在高频的分割振动， 改善所述发声器件 10 0的高频频响。
[0027] 需要说明的是， 请参阅图 4, 图 4为相关技术与本实用新型提供的发声器件的频 响曲线对比图。 其中， 曲线 I为相关技术中三磁路发声器件的频响曲线， 曲线 II 为本实用新型提供的所述发声器件 100的频响曲线， 从图 4中可看出曲线 I和曲线 I I在 13KHz附件有明显的差异。 具体的， 在 13KHz时， 曲线 II的分割振动比曲线 I 的分割振动更轻微， 表现为曲线 II的频响谷点较曲线 I更浅。 这说明了本实用新 型提供的所述发声器件 100的高频频响比相关技术提供中三磁路发声器件的高频 频响更佳， 所述发声器件 100的高频频响得到改善。
[0028] 另外， 所述中间部 3122的外径 d4大于或等于所述球顶 311的外径 d3， 这样可以 避免所述球顶 311撞击所述折环部 3121的风险。 所述振动系统 3还包括辅助振膜 3 3和定心支片 34, 所述定心支片 34—端固设于所述音圈 32, 另一端固设于所述盆 架 1， 所述辅助振膜 33固设于所述定心支片 34远离所述音圈 32的一侧。
[0029] 与相关技术相比， 本实用新型提供的发声器件通过改变音圈排线方式从而对发 声器件的高频凹坑进行改善， 即将音圈最外层不满绕且在音圈的最外层空出球 顶胶合面， 使得音圈与球顶面相胶合的面积减小， 从而减弱了球顶在高频的分 割振动， 改善了本实用新型提供的发声器件的高频频响。
[0030] 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

权利要求书
[权利要求 1] 一种发声器件， 包括盆架， 固设于所述盆架的磁路系统和振动系统， 所述振动系统包括音膜和驱动所述音膜振动的音圈， 所述音膜包括振 膜和固设于所述振膜的球顶， 其特征在于， 所述音圈包括靠近所述音 膜一侧的第一表面及远离所述音膜一侧的第二表面， 所述音圈在所述 第一表面上的外径为第一外径， 所述音圈在所述第二表面上的外径为 第二外径， 所述第一外径小于所述第二外径， 所述球顶的外径大于或 等于所述第二外径。
[权利要求 2] 根据权利要求 1所述的发声器件， 其特征在于， 所述音圈包括靠近所 述音膜的第一部分和远离所述音膜的第二部分， 所述第一表面位于所 述第一部分上， 所述第二表面位于所述第二部分上， 所述第一部分的 外径均等于所述第一外径， 所述第二部分的外径均等于所述第二外径
[权利要求 3] 根据权利要求 2所述的发声器件， 其特征在于， 所述第一部分和所述 第二部分为连续的音圈引线缠绕而成， 所述第二部分的缠绕圈数大于 所述第一部分的缠绕圈数。
[权利要求 4] 根据权利要求 1所述的发声器件， 其特征在于， 所述振膜包括折环部 、 设置于所述折环部内侧的中间部及设置于所述折环部的外侧的固定 部， 所述音圈的第一表面固接于所述中间部， 所述球顶贴设于所述中 间部远离所述音圈的一侧。
[权利要求 5] 根据权利要求 4所述的发声器件， 其特征在于， 所述中间部的外径大 于或等于所述球顶的外径。
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