WO2022110462A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2022110462A1
WO2022110462A1 PCT/CN2020/140088 CN2020140088W WO2022110462A1 WO 2022110462 A1 WO2022110462 A1 WO 2022110462A1 CN 2020140088 W CN2020140088 W CN 2020140088W WO 2022110462 A1 WO2022110462 A1 WO 2022110462A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
membrane
main
avoidance
gap
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/CN2020/140088
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English (en)
French (fr)
Inventor
宋威
张帆
金鑫
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
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Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2022110462A1 publication Critical patent/WO2022110462A1/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
    • H04R7/02—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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to the field of acoustics and electricity, in particular to a loudspeaker.
  • a related art speaker includes a basin frame 201 , a vibration system 202 fixed to the basin frame 201 , and a magnetic circuit system 203 disposed in the basin frame 201 and driving the vibration system 202 to vibrate.
  • the vibration system 202 includes a frame 2021 disposed around the magnetic circuit system 203 and a ball top 2022 connected to the frame 2021 .
  • the purpose of the present invention is to provide a loudspeaker that is conducive to improving the structural strength of vibration, reducing the deformation of the skeleton during vibration, improving the symmetry of the vibration system, and reducing vibration and swing.
  • a loudspeaker including a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system having a magnetic gap
  • the vibration system includes an upper sound membrane, a skeleton connecting the upper sound membrane, and a lower sound membrane elastically supporting the skeleton, and the upper sound membrane includes a top of the ball and a ring portion arranged around the top of the ball, so
  • the top of the ball comprises a main body part and avoidance grooves recessed from two opposite sides of the main body part, an avoidance gap is formed between the avoidance groove and the folded ring part, and the frame includes a main body part and a recessed groove from the main body part.
  • a boss extending along the direction close to the upper sound membrane, the boss is arranged in the avoidance gap.
  • the body portion includes a rectangular ring-shaped first support portion and a second support portion formed by bending and extending from a periphery of the first support portion, and the boss is formed from the first support portion and the second support portion.
  • the avoidance gap is formed by extending correspondingly, and the body part is in contact with the first support part.
  • the lower sound film includes a conductive sheet and a lower diaphragm that are attached to each other, and along the vibration direction of the vibration system, two ends of the second support portion are respectively connected to the ring portion and the conductive sheet. Abut.
  • the folded ring portion includes a first film body disposed around the top of the ball and a second film body formed by vertically bending and extending from the periphery of the first film body, the first film body extending away from the
  • the pot frame is arched in the direction to form a dome, and the inner wall of the second membrane body is connected to the outside of the pot frame.
  • the vibration system further includes a voice coil that is inserted into the magnetic gap and drives the upper sound membrane to vibrate and emit sound
  • the body portion further includes a first support portion bent and extended from the inner side of the first support portion.
  • Three supporting parts, the third supporting part is in contact with the voice coil and is used for supporting the voice coil.
  • the magnetic circuit system includes an upper clamping plate, a lower clamping plate, a main magnetic part and a plurality of auxiliary magnetic parts located between the upper clamping plate and the lower clamping plate, the main magnetic part and a plurality of the auxiliary magnetic parts
  • the auxiliary magnetic parts are fixed on the lower clamping plate, and a plurality of the auxiliary magnetic parts are arranged around the main magnetic part and spaced from the main magnetic part to form the magnetic gap.
  • the magnetic circuit system further comprises a main pole core attached to the main magnetic part and a secondary pole core attached to the secondary magnetic part, the main pole core and the secondary pole core are respectively arranged in The main magnetic part and the auxiliary magnetic part are away from one end of the lower clamping plate.
  • the top of the ball includes a body portion and recessed grooves formed from two opposite sides of the body portion, the space between the avoidance groove and the ring portion is formed.
  • An avoidance gap is formed, and at the same time, the skeleton is arranged to include a main body portion and a boss extending from the main body portion in a direction close to the upper sound membrane, and the boss is arranged in the avoidance gap, that is, through the setting
  • the "H"-shaped top of the ball maximizes the area of the top of the ball, which is conducive to improving the structural strength of the vibrating object and reducing the deformation of the frame during the vibration process.
  • the avoidance groove is matched with the characteristic shape of the boss of the skeleton, and the boss can be used as the assembly and positioning feature of the top of the ball to improve the symmetry of the top of the ball and the skeleton, which is beneficial to improve the symmetry of the vibration system. , to reduce vibration and sway.
  • FIG. 1 is a cross-sectional view of a related art speaker.
  • FIG. 2 is a schematic three-dimensional structure diagram of a speaker provided by the present invention.
  • FIG. 3 is an exploded schematic diagram of the three-dimensional structure of the speaker provided by the present invention.
  • FIG. 4 is an exploded schematic diagram of the three-dimensional structure of the top of the ball and the skeleton in the speaker provided by the present invention.
  • the present invention provides a loudspeaker 100 , the loudspeaker 100 includes a basin frame 10 , and a vibration system 20 fixed to the basin frame 10 is disposed in the basin frame 10 and drives all The magnetic circuit system 30 in which the vibration system 20 vibrates is described.
  • the magnetic circuit system 30 has a magnetic gap 101 .
  • the vibration system 20 includes a skeleton 21 disposed around the magnetic circuit system 30 , an upper sound membrane 22 and a lower sound membrane 23 connected to both ends of the skeleton 21 and inserted into the magnetic gap 101 to drive the upper sound membrane 22 vibrates the voice coil 24 for sound production.
  • the frame 21 includes a main body portion 211 and a boss 212 extending from the main body portion 211 in a direction close to the upper acoustic membrane 22 .
  • the main body portion 211 includes a rectangular ring-shaped first support portion 2111 , a second support portion 2112 formed by bending and extending from the periphery of the first support portion 2111 , and a second support portion 2112 formed from the first support portion 2111 .
  • the inner side is bent and extended to form the third support portion 2113 .
  • the upper acoustic membrane 22 includes a ball top 221 and a ring portion 222 surrounding the ball top 221 .
  • the ball top portion 221 includes a main body portion 2211 and an escape groove 2212 recessed from two opposite sides of the main body portion 2211 . Wherein, an avoidance gap 102 is formed between the avoidance groove 2212 and the folding ring portion 222 .
  • the boss 212 is disposed in the avoidance gap 102 .
  • the escape groove 2212 of the ball top 221 matches the characteristic shape of the boss 212 of the frame 21 , and the boss 212 can be used as the assembly positioning feature of the ball top 221 to lift the ball top. - Symmetry of the skeleton, which is beneficial to improve the symmetry of the vibration system 20 and reduce vibration and sway.
  • the body portion 2211 includes two oppositely disposed first side walls 2214 and two second side walls 2215 connecting the two first side walls.
  • the length of the first side wall 2214 is greater than the length of the second side wall 2215
  • the escape groove 2212 is recessed from the two second side walls 2215 .
  • the escape grooves 2212 may also be disposed on the two first side walls 2215 .
  • the folded ring portion 222 includes a first film body 2221 disposed around the ball top 221 and a second film body 2222 formed by vertically bending and extending from the periphery of the first film body 2221 .
  • the first membrane body 2221 is arched away from the basin frame 10 to form the dome 103 , and the inner wall of the second membrane body 2222 is connected to the outside of the basin frame 10 .
  • the boss 212 extends from the first support portion 2111 corresponding to the avoidance gap 102 , the body portion 2211 abuts against the first support portion 2111 , and the third support portion 2113 It is in contact with the voice coil 24 and is used to support the voice coil 24 .
  • the lower sound membrane 23 includes a conductive sheet 231 and a lower vibration membrane 232 which are attached to each other.
  • both ends of the second support portion 2112 are respectively abutted against the ring portion 222 and the conductive sheet 231 .
  • the conductive sheet 231 is connected to the voice coil 24 by wires, and is used for connecting an external power supply device to supply power to the voice coil 24 .
  • the main pole core 35 and the secondary pole core 36 are respectively disposed at one end of the main magnetic part 33 and the auxiliary magnetic part 34 away from the lower clamping plate 31 .
  • the ball top includes a body portion and avoidance grooves recessed from two opposite sides of the body portion, an avoidance gap is formed between the avoidance groove and the folded ring portion, and at the same time,
  • Setting the frame includes a main body and a boss extending from the main body in a direction close to the upper sound membrane.
  • the boss is arranged in the avoidance gap, that is, by arranging the "H"-shaped alley.
  • the top of the ball can maximize the area of the top of the ball, which is beneficial to improve the structural strength of the vibrating object and reduce the deformation of the frame during the vibration process.
  • the bosses of the skeleton have matching features and shapes, and the bosses can be used as assembling and positioning features of the ball top to improve the spherical top-skeleton symmetry, which is beneficial to improve the symmetry of the vibration system and reduce vibration and sway.

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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)

Abstract

本发明提出了一种扬声器，其包括盆架、固定于所述盆架的振动系统以及驱动所述振动系统振动的磁路系统，所述磁路系统具有磁间隙，所述振动系统包括上音膜、连接所述上音膜的骨架以及弹性支撑所述骨架的下音膜，所述上音膜包括球顶部及环绕所述球顶部设置的折环部，所述球顶部包括本体部及自所述本体部的两相对侧凹陷形成的避让槽，所述避让槽与所述折环部之间形成避让间隙，所述骨架包括主体部及自所述主体部沿靠近所述上音膜方向延伸形成的凸台，所述凸台设置于所述避让间隙内本发明提出的扬声器，有利于提高振动的结构强度，降低所述骨架在振动过程中的变形量，有利于提升所述振动系统的对称性，降低振动摇摆。

Description

扬声器 技术领域
本发明涉及声电领域，尤其涉及一种扬声器。
 背景技术
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，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器被大量应用到现在的智能移动设备之中。
请参阅图1，相关技术的扬声器包括盆架201、固定于所述盆架201的振动系统202及设置于所述盆架201内并驱动所述振动系统202振动的磁路系统203，所述振动系统202包括环绕所述磁路系统203设置的骨架2021及连接于所述骨架2021的球顶部2022。
然而，这样的所述骨架2021与所述球顶部2022直接抵接的结构，球顶-骨架的对称度不高，使得所述骨架2021在所述扬声器的振动过程中，骨架2021不同位置处振动不同步，存在相对位移，进而容易导致所述骨架2021产生变形，发生振动摇摆，影响扬声器的声学性能。
因此，有必要提供一种有利于提高振动的结构强度，降低所述骨架在振动过程中的变形量，有利于提升所述振动系统的对称性，降低振动摇摆的扬声器来解决上述问题。
 技术问题
针对上述问题，本发明的目的在于提供一种有利于提高振动的结构强度，降低所述骨架在振动过程中的变形量，有利于提升所述振动系统的对称性，降低振动摇摆的扬声器。
 技术解决方案
为解决上述技术问题，本发明的实施方式提供了一种扬声器，包括盆架、固定于所述盆架的振动系统以及驱动所述振动系统振动的磁路系统，所述磁路系统具有磁间隙，所述振动系统包括上音膜、连接所述上音膜的骨架以及弹性支撑所述骨架的下音膜，所述上音膜包括球顶部及环绕所述球顶部设置的折环部，所述球顶部包括本体部及自所述本体部的两相对侧凹陷形成的避让槽，所述避让槽与所述折环部之间形成避让间隙，所述骨架包括主体部及自所述主体部沿靠近所述上音膜方向延伸形成的凸台，所述凸台设置于所述避让间隙内。
优选的，所述本体部包括两相对设置的第一侧壁及连接两所述第一侧壁的两第二侧壁，所述第一侧壁的长度大于所述第二侧壁的长度，所述避让槽自两所述第二侧壁凹陷形成。
优选的，所述本体部包括呈矩形环状的第一支撑部及自所述第一支撑部的周缘弯折延伸形成的第二支撑部，所述凸台自所述第一支撑部与所述避让间隙对应处延伸形成，所述本体部与所述第一支撑部抵接。
优选的，所述下音膜包括相贴合的导电片与下振膜，沿所述振动系统的振动方向，所述第二支撑部的两端分别与所述折环部及所述导电片抵接。
优选的，所述折环部包括环绕所述球顶部设置的第一膜体及自所述第一膜体的周缘垂直弯折延伸形成的第二膜体，所述第一膜体向远离所述盆架方向拱起形成球顶，所述第二膜体的内壁连接所述盆架外侧。
优选的，所述振动系统还包括插入所述磁间隙内并驱动所述上音膜振动发声的音圈，所述本体部还包括自所述第一支撑部的内侧弯折延伸形成的第三支撑部，所述第三支撑部与所述音圈抵接并用于支撑所述音圈。
优选的，所述磁路系统包括上夹板、下夹板及位于所述上夹板和所述下夹板之间的主磁部和多个副磁部，所述主磁部和多个所述副磁部固设于所述下夹板上且多个所述副磁部环绕所述主磁部设置并与所述主磁部间隔设置形成所述磁间隙。
优选的，所述磁路系统还包括贴设于所述主磁部的主极芯及贴设于所述副磁部的副极芯，所述主极芯与所述副极芯分别设置于所述主磁部与所述副磁部远离所述下夹板的一端。
 有益效果
与相关技术相比，本发明提供的扬声器，通过设置所述球顶部包括本体部及自所述本体部的两相对侧凹陷形成的避让槽，使所述避让槽与所述折环部之间形成避让间隙，同时，设置所述骨架包括主体部及自所述主体部沿靠近所述上音膜方向延伸形成的凸台，将所述凸台设置于所述避让间隙内，即通过设置呈“H”型的所述球顶部，使得所述球顶部的面积最大化，有利于提升振动的东西结构强度，降低所述骨架在振动过程中的变形量，另一方面，所述球顶部的所述避让槽与所述骨架的所述凸台特征形状匹配，所述凸台可以作为所述球顶部的装配定位特征，提升球顶-骨架对称度，有利于提升所述振动系统的对称性，降低振动摇摆。
 附图说明
为了更清楚地说明本发明实施方式中的技术方案，下面将对实施方式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方式，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。
图1为相关技术的扬声器的剖视图。
图2为本发明提供的扬声器的立体结构示意图。
图3为本本发明提供的扬声器的立体结构分解示意图。
图4为本发明提供的扬声器中球顶部与骨架的立体结构分解示意图。
图5为图2所示的扬声器沿C-C线的剖视图。
 本发明的实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好地理解本发明而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本发明所要求保护的技术方案。
请结合参阅图2至图5，本发明提供了一种扬声器100，所述扬声器100包括盆架10、固定于所述盆架10的振动系统20即设置于所述盆架10内并驱动所述振动系统20振动的磁路系统30。其中，所述磁路系统30具有磁间隙101。
所述振动系统20包括环绕所述磁路系统30设置的骨架21及连接于所述骨架21两端的上音膜22与下音膜23及插入所述磁间隙101内并驱动所述上音膜22振动发声的音圈24。
所述骨架21包括主体部211及自所述主体部211沿靠近所述上音膜22方向延伸形成的凸台212。
具体的，所述主体部211包括呈矩形环状的第一支撑部2111、自所述第一支撑部2111的周缘弯折延伸形成的第二支撑部2112及自所述第一支撑部2111的内侧弯折延伸形成的第三支撑部2113。
所述上音膜22包括球顶部221及环绕球顶部221设置的折环部222。
所述球顶部221包括本体部2211及自所述本体部2211的两相对侧凹陷形成的避让槽2212。其中，所述避让槽2212与所述折环部222之间形成避让间隙102。所述凸台212设置于所述避让间隙102内。如此设置，使得所述球顶部221的所述避让槽2212与所述骨架21的所述凸台212特征形状匹配，所述凸台212可以作为所述球顶部221的装配定位特征，提升球顶-骨架对称度，有利于提升所述振动系统20的对称性，降低振动摇摆。
具体的，所述本体部2211包括两相对设置的第一侧壁2214及连接两所述第一侧壁的两第二侧壁2215。所述第一侧壁2214的长度大于所述第二侧壁2215的长度，所述避让槽2212自两所述第二侧壁2215凹陷形成。当然，这并非对本发明的限定，在其他实施方式中，所述避让槽2212也可以设置于两所述第一侧壁2215。通过设置所述避让槽2212，使得所述球顶部的面积最大化，有利于提升振动的东西结构强度，降低所述骨架在振动过程中的变形量。
所述折环部222包括环绕所述球顶部221设置的第一膜体2221及自所述第一膜体2221的周缘垂直弯折延伸形成的第二膜体2222。所述第一膜体2221向远离所述盆架10方向拱起形成球顶103，所述第二膜体2222的内壁连接所述盆架10的外侧。
具体的，所述凸台212自所述第一支撑部2111与所述避让间隙102对应处延伸形成，所述本体部2211与所述第一支撑部2111抵接，所述第三支撑部2113与所述音圈24抵接并用于支撑所述音圈24。
所述下音膜23包括相贴合的导电片231与下振膜232。沿所述振动系统20的振动方向，所述第二支撑部2112的两端分别与所述折环部222及所述导电片231抵接。
所述导电片231与所述音圈24通过导线连接，并用于连接外部供电器件为所述音圈24供电。
所述磁路系统30包括上夹板31、下夹板32、位于所述上夹板31和所述下夹板32之间的主磁部33和多个副磁部34、贴设于所述主磁部33的主极芯35及贴设于所述副磁部34的副极芯36。其中，所述主磁部33和多个所述副磁部34固设于所述下夹板32上且多个所述副磁部34环绕所述主磁部33设置并与所述主磁部33间隔设置形成所述磁间隙101。
具体的，所述主极芯35与所述副极芯36分别设置于所述主磁部33与所述副磁部34远离所述下夹板31的一端。
本发明提供的扬声器，通过设置所述球顶部包括本体部及自所述本体部的两相对侧凹陷形成的避让槽，使所述避让槽与所述折环部之间形成避让间隙，同时，设置所述骨架包括主体部及自所述主体部沿靠近所述上音膜方向延伸形成的凸台，将所述凸台设置于所述避让间隙内，即通过设置呈“H”型的所述球顶部，使得所述球顶部的面积最大化，有利于提升振动的东西结构强度，降低所述骨架在振动过程中的变形量，另一方面，所述球顶部的所述避让槽与所述骨架的所述凸台特征形状匹配，所述凸台可以作为所述球顶部的装配定位特征，提升球顶-骨架对称度，有利于提升所述振动系统的对称性，降低振动摇摆。
本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施方式，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。

Claims (8)

  1. 一种扬声器，其包括盆架、固定于所述盆架的振动系统以及驱动所述振动系统振动的磁路系统，所述磁路系统具有磁间隙，所述振动系统包括上音膜、连接所述上音膜的骨架以及弹性支撑所述骨架的下音膜，其特征在于，所述上音膜包括球顶部及环绕所述球顶部设置的折环部，所述球顶部包括本体部及自所述本体部的两相对侧凹陷形成的避让槽，所述避让槽与所述折环部之间形成避让间隙，所述骨架包括主体部及自所述主体部沿靠近所述上音膜方向延伸形成的凸台，所述凸台设置于所述避让间隙内。
  2. 根据权利要求1所述的扬声器，其特征在于，所述本体部包括两相对设置的第一侧壁及连接两所述第一侧壁的两第二侧壁，所述第一侧壁的长度大于所述第二侧壁的长度，所述避让槽自两所述第二侧壁凹陷形成。
  3. 根据权利要求2所述的扬声器，其特征在于，所述主体部包括呈矩形环状的第一支撑部及自所述第一支撑部的周缘弯折延伸形成的第二支撑部，所述凸台自所述第一支撑部与所述避让间隙对应处延伸形成，所述本体部与所述第一支撑部抵接。
  4. 根据权利要求3所述的扬声器，其特征在于，所述下音膜包括相贴合的导电片与下振膜，沿所述振动系统的振动方向，所述第二支撑部的两端分别与所述折环部及所述导电片抵接。
  5. 根据权利要求4所述的扬声器，其特征在于，所述折环部包括环绕所述球顶部设置的第一膜体及自所述第一膜体的周缘垂直弯折延伸形成的第二膜体，所述第一膜体向远离所述盆架方向拱起形成球顶，所述第二膜体的内壁连接所述盆架外侧。
  6. 根据权利要求3所述的扬声器，其特征在于，所述振动系统还包括插入所述磁间隙内并驱动所述上音膜振动发声的音圈，所述主体部还包括自所述第一支撑部的内侧弯折延伸形成的第三支撑部，所述第三支撑部与所述音圈抵接并用于支撑所述音圈。
  7. 根据权利要求6所述的扬声器，其特征在于，所述磁路系统包括上夹板、下夹板及位于所述上夹板和所述下夹板之间的主磁部和多个副磁部，所述主磁部和多个所述副磁部固设于所述下夹板上且多个所述副磁部环绕所述主磁部设置并与所述主磁部间隔设置形成所述磁间隙。
  8. 根据权利要求7所述的扬声器，其特征在于，所述磁路系统还包括贴设于所述主磁部的主极芯及贴设于所述副磁部的副极芯，所述主极芯与所述副极芯分别设置于所述主磁部与所述副磁部远离所述下夹板的一端。
PCT/CN2020/140088 2020-11-30 2020-12-28 扬声器 Ceased WO2022110462A1 (zh)

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