WO2020119236A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020119236A1
WO2020119236A1 PCT/CN2019/110861 CN2019110861W WO2020119236A1 WO 2020119236 A1 WO2020119236 A1 WO 2020119236A1 CN 2019110861 W CN2019110861 W CN 2019110861W WO 2020119236 A1 WO2020119236 A1 WO 2020119236A1
Authority
WO
WIPO (PCT)
Prior art keywords
basin frame
diaphragm
clamping plate
upper clamping
vibration
Prior art date
Application number
PCT/CN2019/110861
Other languages
English (en)
French (fr)
Inventor
胡洪建
李帅
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020119236A1 publication Critical patent/WO2020119236A1/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
    • H04R15/00—Magnetostrictive transducers
    • 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
    • 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
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements 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
    • 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; 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
    • H04R7/22—Clamping rim of diaphragm or cone against seating
    • 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
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • 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; 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

Definitions

  • the utility model relates to the field of electroacoustic conversion, in particular to a speaker.
  • the diaphragm is the core component of acoustic devices such as speakers, and the requirements for its acoustic performance have also increased.
  • a related art speaker includes a basin frame and a vibration system respectively fixed to the basin frame and a magnetic circuit system provided in the basin frame.
  • the vibration system includes a first diaphragm fixed to the basin frame and In the second diaphragm opposite to the first diaphragm and spaced apart, the magnetic circuit system includes an upper clamping plate fixed to the basin frame, and the upper clamping plate is spaced apart from the second diaphragm.
  • a part of the upper splint is fixed to the basin frame, and a part protrudes from the interior of the basin frame.
  • the portion of the upper splint protruding from the interior of the basin frame is located
  • the second diaphragm is in the vibration path and collides with the second diaphragm during the vibration of the second diaphragm, resulting in impure sound quality of the sound emitted by the speaker.
  • the purpose of the utility model is to provide a loudspeaker structure that avoids interference between the upper clamping plate and the second vibrating membrane and has a more pure sound quality.
  • a loudspeaker includes a basin frame and a vibration system fixed to the basin frame and a magnetic circuit system provided in the basin frame, the vibration system includes a first diaphragm fixed to the basin frame and The second diaphragm is opposed to and spaced apart from the first diaphragm, and the magnetic circuit system includes an upper plate fixed to the basin frame, and the upper plate is spaced apart from the second diaphragm, wherein the upper
  • the splint includes a fixing portion fixed to the basin frame, and the upper splint is provided with a step recessed toward the first diaphragm from a side of the upper splint facing away from the first diaphragm, the step is located at The upper clamping plate faces the position of the second diaphragm and is connected to the fixing part.
  • the fixing portion includes a first fitting portion fitted into the basin frame and a second fitting extending from the first fitting portion into the basin frame and fitted into the basin frame
  • the inner wall of the basin frame is provided with the step, and the step is connected to the second fitting portion and protrudes out of the inner wall and extends into the interior of the basin frame.
  • the height of the step is not greater than the height of the second fitting portion.
  • the height of the step is not greater than the height of the first fitting portion.
  • the height of the second fitting portion is smaller than the height of the first fitting portion.
  • the second diaphragm includes two and is symmetrically arranged on opposite sides of the voice coil.
  • the magnetic circuit system includes a magnetic bowl, a main magnetic steel arranged in the magnetic bowl, and auxiliary magnetic steel arranged on opposite sides of the main magnetic steel, and the upper clamping plate corresponds to the auxiliary magnetic steel Is provided with a protruding portion extending from the fixing portion into the basin frame, and the protruding portion is covered on the auxiliary magnetic steel.
  • the beneficial effect of the utility model lies in that, because the upper clamping plate is provided with a step recessed from the side of the upper clamping plate facing away from the first diaphragm toward the direction of the first diaphragm, during the vibration of the second diaphragm, the upper clamping plate avoids The setting of the step of the second diaphragm makes the second diaphragm not collide with the upper splint during vibration, and the upper splint will not interfere with the vibration of the second diaphragm, avoiding the impact on the sound quality of the speaker, so as to obtain A speaker with a purer sound quality.
  • Fig. 1 is a perspective structural view of a speaker of the present invention.
  • FIG. 2 is an exploded view of the stereo structure of the utility model speaker.
  • Fig. 3 is a perspective structural view of the upper splint of the speaker of the present invention.
  • FIG. 4 is a cross-sectional view along A-A direction shown in FIG. 1.
  • FIG. 5 is a cross-sectional view taken along the B-B direction shown in FIG. 1.
  • FIG. 6 is an enlarged view of part C shown in FIG. 5.
  • Figure 1-6 shows the structure of the utility model speaker. It includes a pot holder 1, a magnetic circuit system 2 provided in the pot holder 1, and a vibration system 3 fixed to the pot holder 1.
  • 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 covered on the main magnetic steel 22, and auxiliary magnetic steel 24 disposed on opposite sides of the main magnetic steel 22 and The upper clamping plate 25 fixed to the basin holder 1, the main magnetic steel 22 and the auxiliary magnetic steel 24 are spaced apart to form a magnetic gap 26.
  • the vibration system 3 includes a first diaphragm 31 fixed to the basin frame 1, a voice coil 32 connected to the side of the first diaphragm 31 near the magnetic circuit system 2 and driving the first diaphragm 31 to vibrate and sound, fixed to the basin frame 1 and A second diaphragm 33 and an elastic support member 34 that are opposed to and spaced apart from the first diaphragm 31 are fixed at one end to the basin frame 1, and one end is connected to the side of the voice coil 32 facing away from the first diaphragm 31. Further, the second diaphragm 33 includes two symmetrically disposed opposite sides of the voice coil 32.
  • One end of the elastic support 34 is fixed to the basin frame 1, and one end is fixed to the side of the second diaphragm 33 facing away from the voice coil 32.
  • the second diaphragm 33 and the elastic support 34 are positioned oppositely and cooperate to suspend the voice coil 32 in the magnetic gap 26.
  • the upper clamping plate 25 includes a fixing portion 251 fixed to the basin frame 1 and a step 252 recessed in the direction of the first diaphragm 31 from the side of the upper clamping plate 25 facing away from the first diaphragm 31.
  • the step 252 is connected to the fixing portion 251. Further, the step 252 is located at a position on the upper clamping plate 25 directly facing the second diaphragm 33, and is arranged at a distance from the second diaphragm 33. In this way, the second diaphragm 33 avoids the problem of impure sound quality of the speaker caused by collision with the upper clamping plate 25 during vibration.
  • the fixing portion 251 includes a first fitting portion 251a fitted into the basin shelf 1 and a second fitting portion 251b extending from the first fitting portion 251a into the basin shelf 1 and similarly fitted into the basin shelf 1, In the vibration direction of the vibration system 2, the height H2 of the second fitting portion 251b is smaller than the height H3 of the first fitting portion 251a.
  • the inner side wall 11 is provided inside the basin holder 1, and the step 252 is connected to the second fitting portion 251 b and protrudes out of the inner side wall 11 of the basin holder 1 and extends into the interior of the basin holder 1.
  • the height H1 of the step 252 is not greater than the height H2 of the second fitting portion 251b. Further, the height H1 of the step 252 is not greater than the height H3 of the first fitting portion 251a.
  • the arrangement of the above structure makes it possible to effectively avoid the collision interference of the upper clamping plate and the second diaphragm while ensuring a good magnetic permeability effect, thereby obtaining a speaker with a more pure sound quality.
  • a protruding portion 253 extending from the fixing portion 251 of the upper clamp plate 25 into the basin frame 1 is provided on the upper clamp plate 25 at a position corresponding to the secondary magnet steel 24. The protruding portion 253 covers the secondary magnet steel 24. In this way, the good magnetic permeability of the upper splint is further ensured.
  • the upper clamping plate is provided with a step recessed from the side of the upper clamping plate facing away from the first diaphragm toward the direction of the first diaphragm, during the vibration of the second diaphragm, the upper clamping plate avoids the The setting of the steps makes the second diaphragm not collide with the upper splint when vibrating, and the upper splint does not interfere with the vibration of the second diaphragm, avoiding the impact on the sound quality of the speaker, so as to obtain a more pure sound quality speaker.

Abstract

本实用新型公开了一种扬声器，包括盆架和分别固定于盆架的振动系统以及设于盆架内的磁路系统，振动系统包括固定于盆架的第一振膜以及与第一振膜相对且间隔设置的第二振膜，磁路系统包括固定于盆架的上夹板，上夹板与第二振膜间隔设置。其中，上夹板包括固定于盆架的固定部，上夹板上设有自上夹板背离第一振膜的一侧向第一振膜方向凹陷的台阶，所述台阶与固定部相连。本实用新型扬声器结构合理，上夹板上台阶的设置，使得第二振膜在振动时不会与上夹板相碰撞，上夹板不会对第二振膜的振动产生干涉，避免了对扬声器音质的影响，从而能够获得发声音质更纯的扬声器。

Description

扬声器 技术领域
本实用新型涉及一种电声转换领域，尤其涉及一种扬声器。
 背景技术
随着市场需求的不断提高，电子器件如手机等逐渐向薄型化方向发展，而且要求其声音质量越来越好，这就要求手机中的声学器件向着微型、薄型、高音质的方向发展。振膜是扬声器等声学器件的核心部件，对其声学性能的要求也就随之提高。
 技术问题
相关技术的扬声器包括盆架和分别固定于所述盆架的振动系统以及设于所述盆架内的磁路系统，所述振动系统包括固定于所述盆架的第一振膜以及与所述第一振膜相对且间隔设置的第二振膜，所述磁路系统包括固定于所述盆架的上夹板，所述上夹板与所述第二振膜间隔设置。在这种扬声器结构中，所述上夹板一部分固定于所述盆架，一部分凸出于所述盆架内部，在第二振膜振动的过程中，凸出于盆架内部的部分上夹板位于第二振膜的振动路径上并在第二振膜振动的过程中与第二振膜碰撞干涉，导致扬声器发出的声音音质不纯。
因此，有必要提供一种新的扬声器结构来解决上述的问题。
 技术解决方案
本实用新型的目的在于提供一种避免上夹板与第二振膜干涉，发声音质更纯的扬声器结构。
本实用新型的技术方案如下：
一种扬声器，其包括盆架和固定于所述盆架的振动系统以及设于所述盆架内的磁路系统，所述振动系统包括固定于所述盆架的第一振膜以及与所述第一振膜相对且间隔设置的第二振膜，所述磁路系统包括固定于所述盆架的上夹板，所述上夹板与所述第二振膜间隔设置，其中，所述上夹板包括固定于所述盆架的固定部，所述上夹板上设有自所述上夹板背离所述第一振膜的一侧向所述第一振膜方向凹陷的台阶，所述台阶位于所述上夹板上正对所述第二振膜的位置并与所述固定部相连。
优选的，所述固定部包括嵌合于所述盆架的第一嵌合部以及自所述第一嵌合部向所述盆架内部延伸并嵌合于所述盆架的第二嵌合部，所述盆架设有内侧壁，所述台阶连接于所述第二嵌合部并凸出于所述内侧壁向所述盆架内部延伸。
优选的，沿所述振动系统的振动方向，所述台阶的高度不大于所述第二嵌合部的高度。
优选的，沿所述振动系统的振动方向，所述台阶的高度不大于所述第一嵌合部的高度。
优选的，沿所述振动系统的振动方向，所述第二嵌合部的高度小于所述第一嵌合部的高度。
优选的，所述第二振膜包括两个且对称设置于所述音圈的相对两侧。
优选的，所述磁路系统包括磁碗，设于所述磁碗内的主磁钢以及设于所述主磁钢相对两侧的副磁钢，所述上夹板上对应所述副磁钢的位置设有自所述固定部向所述盆架内部延伸的突出部，所述突出部盖设于所述副磁钢上。
 有益效果
本实用新型的有益效果在于：由于在上夹板上设有自上夹板背离第一振膜的一侧向第一振膜方向凹陷的台阶，在第二振膜振动的过程中，上夹板上避让第二振膜的台阶的设置，使得第二振膜在振动时不会与上夹板相碰撞，上夹板不会对第二振膜的振动产生干涉，避免了对扬声器音质的影响，从而能够获得发声音质更纯的扬声器。
 附图说明
图1为本实用新型扬声器立体结构图。
图2为本实用新型扬声器立体结构分解图。
图3为本实用新型扬声器的上夹板立体结构图。
图4为图1所示沿A-A方向的剖视图。
图5为沿图1所示B-B方向的剖视图。
图6为图5所示C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1-6所示为本实用新型扬声器的结构。其包括盆架1，设于所述盆架1内的磁路系统2以及固定于盆架1的振动系统3。
磁路系统2包括磁碗21，设于磁碗21内的主磁钢22，盖设于主磁钢22上的导磁板23，设于主磁钢22相对两侧的副磁钢24以及固定于盆架1的上夹板25，主磁钢22与副磁钢24间隔设置形成磁间隙26。
振动系统3包括固定于盆架1的第一振膜31，连接于第一振膜31靠近磁路系统2一侧并驱动第一振膜31振动发声的音圈32，固定于盆架1并与第一振膜31相对且间隔设置的第二振膜33以及弹性支撑件34，第二振膜33一端固定于盆架1，一端与音圈32背离第一振膜31的一侧相连。进一步的，第二振膜33包含两个且对称设置于音圈32相对的两侧。弹性支撑件34一端固定于盆架1，一端固定于第二振膜33背离音圈32的一侧。第二振膜33与弹性支撑件34位置上正对设置并共同作用将音圈32悬设于磁间隙26内。
其中，上夹板25包括固定于盆架1的固定部251以及自上夹板25背离第一振膜31的一侧向第一振膜31方向凹陷的台阶252。台阶252与固定部251相连。进一步的，台阶252位于上夹板25上正对第二振膜33的位置，与第二振膜33正对间隔设置。如此，使得第二振膜33在振动的过程中避免了与上夹板25碰撞干涉造成的扬声器发声音质不纯的问题。
进一步的，固定部251包括嵌合于盆架1的第一嵌合部251a以及自第一嵌合部251a向盆架1内部延伸并同样嵌合于盆架1的第二嵌合部251b，沿振动系统2的振动方向，第二嵌合部251b的高度H2小于第一嵌合部251a的高度H3。盆架1内部设有内侧壁11，台阶252连接于第二嵌合部251b并凸出于盆架1的内侧壁11向盆架1内部延伸。
此外，沿振动系统2的振动方向，台阶252的高度H1不大于第二嵌合部251b的高度H2。进一步的，台阶252的高度H1不大于第一嵌合部251a的高度H3。上述结构的设置使得在保证良好导磁效果的同时有效避免了上夹板与第二振膜的碰撞干涉，从而获得发声音质更纯的扬声器。另外，上夹板25上对应副磁钢24的位置设有自上夹板25的固定部251向盆架1内部延伸的突出部253，突出部253盖设于副磁钢24上。如此，进一步保证了上夹板良好的导磁效果。
综上，由于在上夹板上设有自上夹板背离第一振膜的一侧向第一振膜方向凹陷的台阶，在第二振膜振动的过程中，上夹板上避让第二振膜的台阶的设置，使得第二振膜在振动时不会与上夹板相碰撞，上夹板不会对第二振膜的振动产生干涉，避免了对扬声器音质的影响，从而能够获得发声音质更纯的扬声器。
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 (7)

  1. 一种扬声器，其包括盆架和固定于所述盆架的振动系统以及设于所述盆架内的磁路系统，所述振动系统包括固定于所述盆架的第一振膜以及与所述第一振膜相对且间隔设置的第二振膜，所述磁路系统包括固定于所述盆架的上夹板，所述上夹板与所述第二振膜间隔设置，其特征在于：所述上夹板包括固定于所述盆架的固定部，所述上夹板上设有自所述上夹板背离所述第一振膜的一侧向所述第一振膜方向凹陷的台阶，所述台阶位于所述上夹板上正对所述第二振膜的位置并与所述固定部相连。
  2. 根据权利要求1所述的扬声器，其特征在于：所述固定部包括嵌合于所述盆架的第一嵌合部以及自所述第一嵌合部向所述盆架内部延伸并嵌合于所述盆架的第二嵌合部，所述盆架设有内侧壁，所述台阶连接于所述第二嵌合部并凸出于所述内侧壁向所述盆架内部延伸。
  3. 根据权利要求2所述的扬声器，其特征在于：沿所述振动系统的振动方向，所述台阶的高度不大于所述第二嵌合部的高度。
  4. 根据权利要求2所述的扬声器，其特征在于：沿所述振动系统的振动方向，所述台阶的高度不大于所述第一嵌合部的高度。
  5. 根据权利要求2所述的扬声器，其特征在于：沿所述振动系统的振动方向，所述第二嵌合部的高度小于所述第一嵌合部的高度。
  6. 根据权利要求1所述的扬声器，其特征在于：所述振动系统包括连接于所述第一振膜靠近所述磁路系统一侧的音圈，所述第二振膜包括两个且对称设置于所述音圈的相对两侧。
  7. 根据权利要求1所述的扬声器，其特征在于：所述磁路系统包括磁碗，设于所述磁碗内的主磁钢以及设于所述主磁钢相对两侧的副磁钢，所述上夹板上对应所述副磁钢的位置设有自所述固定部向所述盆架内部延伸的突出部，所述突出部盖设于所述副磁钢上。
PCT/CN2019/110861 2018-12-10 2019-10-12 扬声器 WO2020119236A1 (zh)

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