WO2021134295A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2021134295A1
WO2021134295A1 PCT/CN2019/130113 CN2019130113W WO2021134295A1 WO 2021134295 A1 WO2021134295 A1 WO 2021134295A1 CN 2019130113 W CN2019130113 W CN 2019130113W WO 2021134295 A1 WO2021134295 A1 WO 2021134295A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
frame body
voice coil
frame
gap
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PCT/CN2019/130113
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English (en)
French (fr)
Inventor
宋威
邵涛
陶伟伟
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
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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
Priority to PCT/CN2019/130113 priority Critical patent/WO2021134295A1/zh
Publication of WO2021134295A1 publication Critical patent/WO2021134295A1/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
    • H04R9/02—Details
    • 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
    • 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

Definitions

  • the present invention relates to the field of electroacoustic technology, in particular to a sound generating device.
  • the sound generating device generally includes a basin frame, a vibration system and a magnetic circuit system fixed on the basin frame.
  • the basin frame in the prior art has a complicated structure and is not stable in fixation with the magnetic circuit system and the vibration system.
  • the object of the present invention is to provide a sounding device with a vibration system and a magnetic circuit system stably fixed to the basin frame.
  • a sound generating device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound.
  • the magnetic circuit system includes a magnetic steel and a magnetic bowl accommodating the magnetic steel.
  • the basin frame includes a first frame body, a second frame body arranged inside the first frame body, and a bottom wall connecting the first frame body and the second frame body, and the magnetic bowl is accommodated in the Inside the second frame, and the inner wall of the second frame is provided with a convex structure that abuts against the outer wall of the magnetic bowl to fix the magnetic bowl.
  • the protrusion structure is a strip protrusion extending along the vibration direction of the vibration system.
  • the thickness of the strip-shaped protrusion gradually increases from an end close to the bottom wall to an end far away from the bottom wall.
  • a groove is provided on the outer wall of the magnetic bowl, and an insert inserted into the groove is provided on the inner wall of the second frame body.
  • a magnetic gap is formed between the magnetic steel and the magnetic bowl
  • the vibration system includes a voice coil inserted in the magnetic gap
  • voice coil leads are provided at both ends of the voice coil
  • the magnetic The bowl is provided with a first gap
  • the second frame body is provided with a second gap corresponding to the first gap
  • the voice coil lead sequentially passes through the first gap and the second gap to connect to an external circuit .
  • the vibration system further includes a voice coil frame fixedly connected to the voice coil, an upper diaphragm that drives sound through the voice coil frame, and a lower diaphragm that elastically supports the voice coil frame, the voice coil
  • the frame includes a main body portion connecting the upper diaphragm and the lower diaphragm, and a transmission portion extending from the main portion toward the voice coil. The transmission portion passes through the first gap and the second gap. The gap is fixedly connected with the voice coil.
  • the magnetic bowl includes two magnetic bowl monomers, the magnetic bowl monomers are symmetrically spliced to form a hollow cavity for accommodating the magnetic steel, and the groove is arranged at the joint of the two magnetic bowl monomers.
  • a first frame is provided for fixing the vibration system
  • a second frame is provided for fixing the magnetic circuit system.
  • the magnetic steel is fixed in the magnetic bowl
  • the inner wall of the second frame is provided with protrusions that abut the outer wall of the magnetic bowl, which can increase the friction between the inner wall of the second frame and the outer wall of the magnetic bowl, so that the magnetic circuit system and the second The connection of the frame body is more stable.
  • Figure 1 is a schematic diagram of the overall structure of a sound emitting device of the present invention
  • Figure 2 is a schematic diagram of an exploded structure of a sound generating device of the present invention
  • Fig. 3 is a schematic cross-sectional view of the A-A plane in Fig. 1;
  • Figure 4 is a schematic diagram of the basin frame structure of a sounding device of the present invention.
  • Figure 5 is a schematic diagram of the magnetic steel structure of a sound device of the present invention.
  • Fig. 6 is a schematic structural diagram of a voice coil skeleton of a sound generating device of the present invention.
  • the present invention discloses a sound generating device, including a basin frame 1, a vibration system 2 fixed to the basin frame 1, and a magnetic circuit system 3 that drives the vibration system 2 to vibrate and produce sound.
  • the magnetic circuit system 3 includes a magnetic Steel 32 and the magnetic bowl 31 containing the magnetic steel 32.
  • the basin frame 1 includes a first frame body 11, a second frame body 12 arranged inside the first frame body 11, and a connection connecting the first frame body 11 and the second frame body 12
  • the magnetic bowl 31 is accommodated in the second frame 12, and the inner wall of the second frame 12 is provided with a protrusion structure 121 that abuts against the outer wall of the magnetic bowl 31 to fix the magnetic bowl 31.
  • the magnetic circuit system 3 is provided with a first frame body 11 for fixing the vibration system 2 and a second frame body 12 for fixing the magnetic circuit system 3 in the basin frame 1 of the present invention.
  • the magnetic steel 32 is fixed in the magnetic bowl 31, and the inner wall of the second frame 12 is provided with a convex structure 121 abutting the outer wall of the magnetic circuit system 3, which can increase the difference between the inner wall of the second frame 12 and the outer wall of the magnetic circuit system 3 of the magnetic bowl 31.
  • the friction between the magnetic circuit system 3 and the second frame body 12 is more stable.
  • the magnetic bowl 31 includes two magnetic bowl monomers 311.
  • the magnetic bowl monomers 311 are symmetrically spliced to form a hollow cavity for accommodating the magnetic steel 32.
  • the magnetic steel 32 includes two magnetic steel monomers 321.
  • the steel monomers 321 are respectively fixed in the corresponding magnetic bowl monomers 311, and the two magnetic steel monomers 321 are connected by a magnetic conductive member.
  • the protruding structure 121 includes a first protruding structure 121 close to the bottom wall 13 and a second protruding structure 121 far from the bottom wall 13, and the first protruding structure 121 is used to fix a single magnetic bowl 311 , The second protrusion structure 121 is used to fix another magnetic bowl monomer 311.
  • first protrusion structure 121 and the second protrusion structure 121 are both strip-shaped protrusions extending along the vibration direction of the vibration system 2. Arranging the first protruding structure 121 and the second protruding structure 121 in the vibration direction of the vibration system 2 is beneficial to enhance the friction between the magnetic bowl unit 311 and the second frame body 12 and avoid the magnetic bowl unit 311 Vibration occurs under the action of a magnetic field.
  • the thickness of the first protrusion structure 121 gradually increases from an end close to the bottom wall 13 to an end far away from the bottom wall 13.
  • the magnetic bowl monomer 311 is inserted into the end of the second frame body 12 close to the bottom wall 13, and the thickness of the first protruding structure 121 is increased at a position constantly far away from the bottom wall 13, so that the magnetic bowl monomer 311 and the first
  • the force between the protruding structures 121 is continuously enhanced to ensure that the magnetic bowl unit 311 is more firmly fixed.
  • the joint surfaces of the two magnetic bowl monomers 311 are provided with depressions, and the two depressions are spliced to form a groove 312, and the inner wall of the second frame body 12 is provided with an insertion groove 312 ⁇ INSERT 122.
  • the size of the insert 122 and the groove 312 are the same, which can further limit the rotational movement of the magnetic circuit system 3 in the basin frame 1, and play a role in strengthening the magnetic bowl 31.
  • the groove is provided between the two magnetic bowl monomers 311. In the meantime, its cooperation with the insert 122 can simultaneously limit the unnecessary rotation of the magnetic circuit system 3, and improve the stability of the structure of the sound generating device.
  • a magnetic gap 33 is formed between the magnetic steel 32 and the magnetic bowl 31, and the vibration system 2 includes a voice coil 21 inserted in the magnetic gap 33, a voice coil skeleton 22 fixedly connected to the voice coil 21, and a sound
  • the coil frame 22 drives the upper diaphragm 23 for sound generation and the lower diaphragm 24 that elastically supports the voice coil frame 22.
  • Both ends of the voice coil 21 are provided with voice coil leads
  • the magnetic bowl 31 is provided with a first gap 313, and the second frame body 12 is provided with There is a second gap 123 corresponding to the first gap 313, and the voice coil lead sequentially passes through the first gap 313 and the second gap 123 to connect to an external circuit.
  • the voice coil 21 when the voice coil 21 receives the electrical signal, an electromagnetic field is generated around the voice coil 21 to interact with the natural magnetic field of the magnetic circuit system 3.
  • the voice coil 21 vibrates up and down in the magnetic gap 33, and the voice coil skeleton 22 passes through the first gap. 313 and the second gap 123 vibrate simultaneously with the voice coil 21, and the upper diaphragm 23 and the lower diaphragm 24 are driven by the voice coil skeleton 22 to vibrate and produce sound.
  • the arrangement of the first gap 313 and the second gap 123 can not only realize the fixed connection between the voice coil 21 and the voice coil frame 22, but also ensure that the vibration of the voice coil frame 22, the upper diaphragm 23 and the lower diaphragm 24 are not affected.
  • the voice coil skeleton 22 includes a main body portion 221 connecting the upper diaphragm 23 and the lower diaphragm 24, and a transmission portion 222 extending from the main portion 221 toward the voice coil 21.
  • the transmission portion 222 passes through the first gap 313.
  • the second gap 123 is fixedly connected to the voice coil 21.
  • the main body portion 221 is arranged between the first frame body 11 and the second frame body 12 and has an annular ring structure.
  • the transmission portion 222 extends along the inner wall of the main body portion 221 in the direction of the central axis of the main body portion 221 and sequentially Pass through the second gap 123 and the first gap 313 to fix the voice coil 21.
  • the transmission part 222 includes a plurality of transmission parts, which are evenly distributed on the inner wall of the main body part 221, so that the voice coil 21 can be fixed more stably.
  • the upper diaphragm 23 includes a first upper diaphragm 231 and a second upper diaphragm 232 provided in the first upper diaphragm 231.
  • the first upper diaphragm 231 is connected to the main body 221 and the first frame. Between the bodies 11, the second upper diaphragm 232 is connected between the main body portion 221 and the second frame 12.
  • the first upper diaphragm 231 and the second upper diaphragm 232 jointly maintain the stability of one end of the voice coil 21 support, and the lower vibration
  • the membrane 24 maintains the other end of the support of the voice coil 21 stable.

Landscapes

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

Abstract

本发明提供了一种发声装置。本发明的该发声装置包括盆架、固定于所述盆架的振动系统以及驱动所述振动系统振动发声的磁路系统，所述磁路系统包括磁钢以及收容所述磁钢的磁碗，其特征在于，所述盆架包括第一架体、设置于所述第一架体内侧的第二架体以及连接所述第一架体与所述第二架体的底壁，所述磁碗收容于所述第二架体内，且所述第二架体的内壁设有与所述磁碗的外壁抵接以固定所述磁碗的凸起结构。本发明的盆架中设置第一架体进行振动系统的固定，设置第二架体进行磁路系统的固定。第二架体内壁设置与磁路系统外壁抵接的凸起件，可以增大第二架体内壁与磁路系统外壁之间的摩擦力，使得磁路系统与第二架体的连接更加稳定。

Description

发声装置 技术领域
本发明涉及电声技术领域，尤其涉及一种发声装置。
 背景技术
随着科技的快速发展，在音频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，对于发声装置，越来越多人对其音频性能等提出了较高的要求。发声装置一般包括盆架以及固定在盆架上的振动系统以及磁路系统，现有技术中的盆架结构复杂，且与磁路系统以及振动系统的固定不太稳定。
 技术问题
本发明的目的在于提供一种振动系统与磁路系统稳定固定于盆架的发声装置。
 技术解决方案
本发明的技术方案如下：
一种发声装置，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发声的磁路系统，所述磁路系统包括磁钢以及收容所述磁钢的磁碗，所述盆架包括第一架体、设置于所述第一架体内侧的第二架体以及连接所述第一架体与所述第二架体的底壁，所述磁碗收容于所述第二架体内，且所述第二架体的内壁设有与所述磁碗的外壁抵接以固定所述磁碗的凸起结构。
优选地，所述凸起结构为沿所述振动系统振动方向延伸的条状凸起。
优选地，所述条状凸起的厚度自靠近底壁一端向远离底壁的一端逐渐增大。
优选地，所述磁碗的外壁上设有凹槽，所述第二架体的内壁上设有插置于所述凹槽内的插入件。
优选地，所述磁钢与所述磁碗之间形成磁间隙，所述振动系统包括插设于所述磁间隙内的音圈，所述音圈两端设有音圈引线，所述磁碗设有第一间隙，所述第二架体设有与所述第一间隙对应的第二间隙，所述音圈引线依次穿过所述第一间隙以及所述第二间隙与外部电路连接。
优选地，所述振动系统还包括与所述音圈固定连接的音圈骨架，通过所述音圈骨架驱动发声的上振膜以及弹性支撑所述音圈骨架的下振膜，所述音圈骨架包括连接所述上振膜和所述下振膜的主体部以及自所述主体部向所述音圈方向延伸的传动部，所述传动部穿过所述第一间隙与所述第二间隙与所述音圈固定连接。
优选地，所述磁碗包括两个磁碗单体，所述磁碗单体对称拼接形成容纳所述磁钢的中空腔体，所述凹槽设置于两个磁碗单体连接处。
 有益效果
本发明的有益效果在于：本发明的盆架中设置第一架体进行振动系统的固定，设置第二架体进行磁路系统的固定。磁钢固定于磁碗内，第二架体内壁设置与磁碗外壁抵接的凸起件，可以增大第二架体内壁与磁碗外壁之间的摩擦力，使得磁路系统与第二架体的连接更加稳定。
 附图说明
图1为本发明一种发声装置的整体结构示意图；
图2为本发明一种发声装置的分解结构示意图；
图3为图1中A-A面的剖切示意图；
图4为本发明一种发声装置的盆架结构的示意图；
图5为本发明一种发声装置的磁钢结构的示意图；
图6为本发明一种发声装置的音圈骨架的结构示意图。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步说明。
如图1-4所示，本发明公开了一种发声装置，包括盆架1、固定于盆架1的振动系统2以及驱动振动系统2振动发声的磁路系统3，磁路系统3包括磁钢32以及收容磁钢32的磁碗31，盆架1包括第一架体11、设置于第一架体11内侧的第二架体12以及连接第一架体11与第二架体12的底壁13，磁碗31收容于第二架体12内，且第二架体12的内壁设有与磁碗31的外壁抵接以固定磁碗31的凸起结构121。振动系统2振动系统2磁路系统3振动系统2磁路系统3盆架1盆架1振动系统2第一架体11第一架体11第二架体12第二架体12磁路系统3磁路系统3相较于现有技术，本发明的盆架1中设置第一架体11进行振动系统2的固定，设置第二架体12进行磁路系统3的固定。磁钢32固定于磁碗31内，第二架体12内壁设置与磁路系统3外壁抵接的凸起结构121，可以增大第二架体12内壁与磁碗31磁路系统3外壁之间的摩擦力，使得磁路系统3与第二架体12的连接更加稳定。
请进一步参阅图5，磁碗31包括两个磁碗单体311，磁碗单体311对称拼接形成容纳磁钢32的中空腔体，磁钢32包括两个磁钢单体321，两个磁钢单体321分别固定于相应的磁碗单体311中，两个磁钢单体321通过导磁件相连。
在本实施例中，凸起结构121包括靠近底壁13的第一凸起结构121以及远离底壁13的第二凸起结构121，第一凸起结构121用于固定一个磁碗单体311，第二凸起结构121用于固定另一个磁碗单体311。
具体地，第一凸起结构121以及第二凸起结构121均为沿振动系统2振动方向延伸的条状凸起。将第一凸起结构121以及第二凸起结构121设置在振动系统2的振动方向上，有利于增强磁碗单体311与第二架体12之间的摩擦力，避免磁碗单体311在磁场的作用下产生振动。
进一步地，第一凸起结构121的厚度自靠近底壁13一端向远离底壁13的一端逐渐增大。磁碗单体311由靠近底壁13的第二架体12端部插入，在不断远离底壁13的位置将第一凸起结构121的厚度增大，可以使得磁碗单体311与第一凸起结构121之间的作用力不断增强，以保证磁碗单体311固定更加牢固。
在本实施例中，两个磁碗单体311的拼接面上均设有凹陷位，两个凹陷位拼接形成凹槽312，第二架体12的内壁上设有插置于凹槽312内的插入件122。插入件122与凹槽312的尺寸一致，可以进一步限制磁路系统3在盆架1内的旋转移动，起到了加固磁碗31的作用，同时由于凹槽设置于两个磁碗单体311之间，其与插入件122配合可以同时限制磁路系统3不必要的转动，提高了发声装置结构的稳定性。
在本实施例中，磁钢32与磁碗31之间形成磁间隙33，振动系统2包括插设于磁间隙33内的音圈21、与音圈21固定连接的音圈骨架22、通过音圈骨架22驱动发声的上振膜23以及弹性支撑音圈骨架22的下振膜24，音圈21两端设有音圈引线，磁碗31设有第一间隙313，第二架体12设有与第一间隙313对应的第二间隙123，音圈引线依次穿过第一间隙313以及第二间隙123与外部电路连接。
具体地，当音圈21收到电信号后，音圈21的周围产生电磁场与磁路系统3的固有磁场产生作用，音圈21在磁间隙33内上下振动，音圈骨架22通过第一间隙313以及第二间隙123与音圈21同时振动，上振膜23以及下振膜24在音圈骨架22的带动下振动发声。第一间隙313以及第二间隙123的设置既可以实现音圈21与音圈骨架22的固定连接，同时可以保证音圈骨架22、上振膜23以及下振膜24的振动不受影响。
请进一步参阅图6，音圈骨架22包括连接上振膜23和下振膜24的主体部221以及自主体部221向音圈21方向延伸的传动部222，传动部222穿过第一间隙313与第二间隙123与音圈21固定连接。
需要说明的是，主体部221设置在第一架体11与第二架体12之间，为环形圈体结构，传动部222沿主体部221的内壁向主体部221的中心轴方向延伸并依次穿过第二间隙123以及第一间隙313从而固定音圈21。传动部222包括多个，均匀分布在主体部221的内壁上，可以更加稳定的固定音圈21。
在本实施例中，上振膜23包括第一上振膜231以及设于第一上振膜231内的第二上振膜232，第一上振膜231连接于主体部221与第一架体11之间，第二上振膜232连接于主体部221与第二架体12之间，第一上振膜231以及第二上振膜232共同维持音圈21支架的一端稳定，下振膜24维持音圈21支架的另一端稳定。
以上的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (7)

  1. 一种发声装置，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发声的磁路系统，所述磁路系统包括磁钢以及收容所述磁钢的磁碗，其特征在于，所述盆架包括第一架体、设置于所述第一架体内侧的第二架体以及连接所述第一架体与所述第二架体的底壁，所述磁碗收容于所述第二架体内，且所述第二架体的内壁设有与所述磁碗的外壁抵接以固定所述磁碗的凸起结构。
  2. 根据权利要求1所述的发声装置，其特征在于，所述凸起结构为沿所述振动系统振动方向延伸的条状凸起。
  3. 根据权利要求2所述的发声装置，其特征在于，所述条状凸起的厚度自靠近底壁一端向远离底壁的一端逐渐增大。
  4. 根据权利要求1所述的发声装置，其特征在于，所述磁碗的外壁上设有凹槽，所述第二架体的内壁上设有插置于所述凹槽内的插入件。
  5. 根据权利要求1所述的发声装置，其特征在于，所述磁钢与所述磁碗之间形成磁间隙，所述振动系统包括插设于所述磁间隙内的音圈，所述音圈两端设有音圈引线，所述磁碗设有第一间隙，所述第二架体设有与所述第一间隙对应的第二间隙，所述音圈引线依次穿过所述第一间隙以及所述第二间隙与外部电路连接。
  6. 根据权利要求5所述的发声装置，其特征在于，所述振动系统还包括与所述音圈固定连接的音圈骨架、通过所述音圈骨架驱动发声的上振膜以及弹性支撑所述音圈骨架的下振膜，所述音圈骨架包括连接所述上振膜和所述下振膜的主体部以及自所述主体部向所述音圈方向延伸的传动部，所述传动部依次穿过所述第一间隙以及所述第二间隙并与所述音圈固定连接。
  7. 根据权利要求4所述的发声装置，其特征在于，所述磁碗包括两个磁碗单体，所述磁碗单体对称拼接形成容纳所述磁钢的中空腔体，所述凹槽设置于两个磁碗单体连接处。
PCT/CN2019/130113 2019-12-30 2019-12-30 发声装置 WO2021134295A1 (zh)

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CN106535069A (zh) * 2016-11-29 2017-03-22 珠海格力电器股份有限公司 一种扬声器及音频设备
CN207166766U (zh) * 2017-09-27 2018-03-30 江苏裕成电子有限公司 扬声器及电子设备
CN207869357U (zh) * 2018-01-04 2018-09-14 瑞声科技(新加坡)有限公司 扬声器
CN208638595U (zh) * 2018-08-03 2019-03-22 瑞声科技(新加坡)有限公司 扬声器模组
US20190313195A1 (en) * 2018-04-06 2019-10-10 N Citron, Inc. Magnet structure free of magnetic flux leakage and panel vibration type audio generating apparatus including the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106535069A (zh) * 2016-11-29 2017-03-22 珠海格力电器股份有限公司 一种扬声器及音频设备
CN207166766U (zh) * 2017-09-27 2018-03-30 江苏裕成电子有限公司 扬声器及电子设备
CN207869357U (zh) * 2018-01-04 2018-09-14 瑞声科技(新加坡)有限公司 扬声器
US20190313195A1 (en) * 2018-04-06 2019-10-10 N Citron, Inc. Magnet structure free of magnetic flux leakage and panel vibration type audio generating apparatus including the same
CN208638595U (zh) * 2018-08-03 2019-03-22 瑞声科技(新加坡)有限公司 扬声器模组

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