WO2020029644A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020029644A1
WO2020029644A1 PCT/CN2019/088087 CN2019088087W WO2020029644A1 WO 2020029644 A1 WO2020029644 A1 WO 2020029644A1 CN 2019088087 W CN2019088087 W CN 2019088087W WO 2020029644 A1 WO2020029644 A1 WO 2020029644A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
flexible circuit
circuit board
voice coil
pad portion
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/CN2019/088087
Other languages
English (en)
French (fr)
Inventor
宋威
吴树文
陈致远
张帆
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
Original Assignee
AAC Acoustic Technologies Shenzhen Co 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 filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020029644A1 publication Critical patent/WO2020029644A1/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
    • 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; 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

Definitions

  • the utility model relates to the technical field of acoustic design, in particular to a speaker.
  • the speaker includes a basin frame and a vibration system and a magnetic circuit system housed in the basin frame.
  • the vibration system includes a voice coil and a flexible circuit board electrically connected to the voice coil.
  • the form is derived through leads, spot welding, and injection molding of the basin frame. In this way, because the lead structure is provided, the product cannot be completely symmetrical, and the problem of unbalanced vibration is more prominent.
  • the lead structure also occupies part of the space of the magnetic gap, which causes the acoustic performance of the speaker to decrease.
  • the utility model aims to solve at least one of the technical problems existing in the prior art, and provides a novel speaker.
  • the present invention provides a speaker.
  • the speaker includes a basin frame and a vibration system and a magnetic circuit system housed in the basin frame.
  • the vibration system includes a voice coil, a flexible circuit board, and a diaphragm.
  • the flexible circuit board includes a main body portion and a pad portion extending inward from the main body portion, the pad portion is electrically connected to the voice coil, and the magnetic circuit system is provided corresponding to a position of the pad portion. There is an escape portion that accommodates the pad portion.
  • the flexible circuit board has a strip structure and has two, and the two flexible circuit boards are symmetrically disposed on both sides of the magnetic circuit system.
  • the flexible circuit board is disposed on both sides of a long axis end of the magnetic circuit system, and the flexible circuit board is located between the magnetic circuit system and a basin frame.
  • the flexible circuit board is located at the bottom of the voice coil, and the pad portion is located at least partially inside the voice coil.
  • the pad portion is glued to the bottom of the voice coil.
  • the magnetic circuit system includes a magnetic frame and a main magnetic steel disposed in the magnetic frame. There is a magnetic gap between the main magnetic steel and the magnetic frame, and the voice coil is inserted in the magnetic coil.
  • the avoidance portion includes a first avoidance portion provided on the magnetic frame and a second avoidance portion provided on the main magnetic steel.
  • the magnetic circuit system further includes a pole core provided on the main magnetic steel, and the avoidance portion further includes a third escape portion provided on the pole core.
  • the speaker is further provided with a connection ring connected to an end of the basin frame remote from the diaphragm, the flexible circuit board is provided with a card slot, and the card slot is connected to the connection ring and makes the The connecting ring is fixedly connected with the flexible circuit board.
  • the flexible circuit board includes a main body portion and a pad portion extending from the main body portion to the inside, the pad portion is electrically connected to the voice coil, and the magnetic circuit system corresponds to the soldering.
  • An escape portion is provided at the position of the disk portion to accommodate the pad portion.
  • Figure 1 is an exploded view of the speaker of the present invention
  • FIG. 2 is a perspective view of a speaker of the present invention
  • FIG. 3 is a cross-sectional view of the speaker shown in FIG. 2 along the AA direction.
  • the present invention relates to a speaker 100.
  • the speaker 100 includes a basin frame 110 and a vibration system 120 and a magnetic circuit system 130 contained in the basin frame 110.
  • the vibration system 120 The voice coil 121 includes a voice coil 121, a flexible circuit board 122, and a diaphragm 123.
  • the flexible circuit board 122 includes a main body portion 122a and a pad portion 122b extending inward from the main body portion 122a.
  • the ring 121 is electrically connected, and the magnetic circuit system 130 is provided with a relief portion 131 that accommodates the pad portion 122b at a position corresponding to the pad portion 122b.
  • the flexible circuit board 122 includes a pad portion 122b extending toward the magnetic circuit system 130 and connected to the voice coil, and the magnetic circuit system 130 corresponds to the pad portion.
  • An escape portion 131 is provided at a position of 122b to receive the pad portion 122b.
  • a local position of the flexible circuit board 122 is connected to the voice coil 121, so that the magnetic gap is not sacrificed, thereby improving the acoustic performance of the speaker 100 and improving the user experience.
  • the flexible circuit boards 122 are strip-shaped structures and have two, and the two flexible circuit boards 122 are symmetrically disposed on both sides of the magnetic circuit system 130.
  • the flexible circuit board 122 is disposed on both sides of the long axis end of the magnetic circuit system 130, and the flexible circuit board 122 is located on the magnetic circuit system 130 and the basin frame 110. between.
  • the two flexible circuit boards 122 may be located on both sides of the long axis end of the magnetic circuit system 130 in addition to the two sides of the short axis end of the magnetic circuit system 130.
  • the flexible circuit board 122 is located at the bottom of the voice coil 121, and the pad portion 122 b is located at least partially inside the voice coil 121. That is, as shown in FIG. 1 and FIG. 3, the pad portion 122 b crosses the voice coil 121 laterally, in other words, the pad portion 122 b is divided on the inner and outer sides of the voice coil 121. The portion 122b is glued to the bottom of the voice coil 121. In this way, when bonding the pad portion 122b and the voice coil 121, the bonding area between the voice coil 121 and the pad portion 122b can be increased, so that the stability of the electrical connection between the pad portion 122b and the voice coil 121 can be improved.
  • the pad portion 122b may also adopt other fixing methods, such as soldering.
  • the pad portion 122 b is located at a middle position of the magnetic circuit system 130 in the length direction.
  • the magnetic circuit system 130 is provided with the avoiding portion 131 at a middle position along its length direction.
  • the pad portion 122b can also be located at any position along the length direction of the magnetic circuit system 130, but when the pad portion 122b is located at the middle position of the magnetic circuit system 130 in the length direction, it can make The structure of the speaker 100 is completely symmetrical, which can effectively solve the problem of vibration imbalance, so that the acoustic performance of the speaker 100 can be better.
  • the magnetic circuit system 130 includes a magnetic frame 132 and a main magnetic steel 133 and a pole core 134 disposed in the magnetic frame 132 in sequence.
  • the main magnetic steel 133 and the pole core There is a magnetic gap 135 between 134 and the magnetic frame 132, the voice coil 121 is inserted in the magnetic gap 135, and the avoidance portion 131 includes a first avoidance portion provided on the magnetic frame 132 131a, a second avoidance portion 131b provided on the main magnetic steel 133, and a third avoidance portion 131c provided on the pole core 134.
  • the magnetic frame 132, the main magnetic steel 133, and the pole core 134 are provided with avoidance grooves passing through their respective thicknesses at positions corresponding to the pad portions 122b, and the open ends of the avoidance grooves face the In the pad portion 122b, the avoidance groove forms the avoidance portion 131.
  • the shape of the avoidance groove is not limited.
  • the longitudinal section of the avoidance groove may be triangular, trapezoidal, or rectangular. Accordingly, the shape of the pad portion 122b should match the shape of the avoidance groove.

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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

一种扬声器，所述扬声器包括盆架以及收容于所述盆架内的振动系统和磁路系统，所述振动系统包括音圈、柔性电路板和振膜，所述柔性电路板包括主体部以及自所述主体部向内部延伸的焊盘部，所述焊盘部与所述音圈电连接，所述磁路系统对应所述焊盘部的位置设有容纳所述焊盘部的避让部。本实用新型的扬声器，所述柔性电路板包括主体部以及自所述主体部向内部延伸的焊盘部，所述焊盘部与所述音圈电连接，所述磁路系统对应所述焊盘部的位置设有容纳所述焊盘部的避让部，柔性电路板的局部位置与所述音圈连接，从而不会牺牲磁间隙，进而可以提高扬声器的声学性能，提高用户体验。

Description

扬声器 技术领域
本实用新型涉及声学设计技术领域，具体涉及一种扬声器。
 背景技术
相关技术中，扬声器包括盆架以及收容于所述盆架内的振动系统和磁路系统，所述振动系统包括音圈以及与所述音圈电连接的柔性电路板。在该结构的扬声器中，其通过引线、点焊、盆架注塑焊片导出的形式，这样，由于设置有引线结构，因此，会使得产品无法做到完全对称，振动不平衡的问题较为突出，并且，引线结构还会占用磁间隙的部分空间，导致扬声器的声学性能下降。
 技术问题
本实用新型旨在至少解决现有技术中存在的技术问题之一，而提供一种新型的扬声器。
 技术解决方案
为实现上述目的，本实用新型提供了一种扬声器，所述扬声器包括盆架以及收容于所述盆架内的振动系统和磁路系统，所述振动系统包括音圈、柔性电路板和振膜，所述柔性电路板包括主体部以及自所述主体部向内部延伸的焊盘部，所述焊盘部与所述音圈电连接，所述磁路系统对应所述焊盘部的位置设有容纳所述焊盘部的避让部。
可选地，所述柔性电路板为条状结构，并且具有两个，两个柔性电路板对称设置于所述磁路系统的两侧。
可选地，所述柔性电路板设置于所述磁路系统的长轴端的两侧，所述柔性电路板位于所述磁路系统和盆架之间。
可选地，所述柔性电路板位于所述音圈的底部，所述焊盘部至少部分位于所述音圈的内侧。
可选地，所述焊盘部与所述音圈的底部胶合。
可选地，所述焊盘部位于所述磁路系统沿长度方向的中部位置。
可选地，所述磁路系统包括磁框以及设置在所述磁框内的主磁钢，所述主磁钢与所述磁框之间具有磁间隙，所述音圈插置在所述磁间隙中，并且，所述避让部包括设置在所述磁框上的第一避让部和设置在所述主磁钢上的第二避让部。
可选地，所述磁路系统还包括设置在所述主磁钢上的极芯，所述避让部还包括设置在所述极芯上的第三避让部。
可选地，所述扬声器还设有与盆架的远离所述振膜的一端连接的连接环，所述柔性电路板设有卡槽，所述卡槽卡接所述连接环并使所述连接环与所述柔性电路板固定连接。
 有益效果
本实用新型的扬声器，所述柔性电路板包括主体部以及自所述主体部向内部延伸的焊盘部，所述焊盘部与所述音圈电连接，所述磁路系统对应所述焊盘部的位置设有容纳所述焊盘部的避让部。本实用新型的扬声器，柔性电路板的局部位置与所述音圈连接，从而不会牺牲磁间隙，进而可以提高扬声器的声学性能，提高用户体验。
 附图说明
图1是本实用新型扬声器的分解图；
图2是本实用新型扬声器的立体图；
图3是图2中所示的扬声器沿AA方向的剖视图。
 本发明的实施方式
下面结合图1至图3对本实用新型作详细描述。
如图1至图3所示，本实用新型涉及一种扬声器100，所述扬声器100包括盆架110以及收容于所述盆架110内的振动系统120和磁路系统130，所述振动系统120包括音圈121、柔性电路板122和振膜123，所述柔性电路板122包括主体部122a以及自所述主体部122a向内部延伸的焊盘部122b，所述焊盘部122b与所述音圈121电连接，所述磁路系统130对应所述焊盘部122b的位置设有容纳所述焊盘部122b的避让部131。
具体地，如图1和图2所示，在将柔性电路板122与音圈121电连接时，可以使得朝向所述磁路系统130延伸的焊盘部122b与音圈121电连接，从而可以实现柔性电路板122与音圈121的电连接。也就是说，仅仅柔性电路板122的局部与所述音圈121电连接，这样，不会牺牲磁间隙，从而可以提高扬声器100声学性能。
本实施例中的扬声器100，其中的柔性电路板122包括朝向所述磁路系统130延伸并与所述音圈连接的焊盘部122b，同时，所述磁路系统130对应所述焊盘部122b的位置处设置有容纳所述焊盘部122b的避让部131。本实施例中的扬声器100，柔性电路板122的局部位置与所述音圈121连接，从而不会牺牲磁间隙，进而可以提高扬声器100的声学性能，提高用户体验。
如图1和图3所示，所述柔性电路板122为条状结构，并且具有两个，且该两个柔性电路板122对称设置于所述磁路系统130的两侧。
具体地，如图1和图3所示，所述柔性电路板122设置于所述磁路系统130的长轴端的两侧，所述柔性电路板122位于所述磁路系统130和盆架110之间。
当然，两个所述柔性电路板122可以除了位于磁路系统130的长轴端的两侧以外，还可以位于所述磁路系统130的短轴端的两侧。
如图1和图3所示，所述柔性电路板122位于所述音圈121的底部，所述焊盘部122b至少部分位于所述音圈121的内侧。也就是说，如图1和图3所示，焊盘部122b横向跨过所述音圈121，换句话说，焊盘部122b分设在所述音圈121的内外两侧，所述焊盘部122b与所述音圈121的底部胶合。这样，在将焊盘部122b与音圈121胶合时，可以增大音圈121与焊盘部122b之间的胶合面积，从而可以提高焊盘部122b与音圈121电连接的稳定性。当然，焊盘部122b除了可以采用胶合的方式与音圈121电连接以外，还可以采用其他的一些固定方式，例如焊接等。
如图1和图3所示，所述焊盘部122b位于所述磁路系统130沿长度方向的中部位置。相应地，所述磁路系统130沿其长度方向的中部位置处设置有所述避让部131。
当然，除此以外，焊盘部122b还可以位于所述磁路系统130沿长度方向的任意位置处，只不过当焊盘部122b位于所述磁路系统130沿长度方向的中部位置，可以使得扬声器100的结构完全对称，可以有效解决振动不平衡的问题，从而可以使得扬声器100的声学性能更优。
如图1和图3所示，所述磁路系统130包括磁框132以及依次设置在所述磁框132内的主磁钢133和极芯134，所述主磁钢133、所述极芯134与所述磁框132之间具有磁间隙135，所述音圈121插置在所述磁间隙135中，并且，所述避让部131包括设置在所述磁框132上的第一避让部131a、设置在所述主磁钢133上的第二避让部131b以及设置在所述极芯134上的第三避让部131c。
具体地，所述磁框132、所述主磁钢133和所述极芯134对应所述焊盘部122b的位置设置有贯穿其各自厚度的避让槽，所述避让槽的开口端朝向所述焊盘部122b，所述避让槽形成所述避让部131。
这样，在组装上述结构的扬声器100时，可以将柔性电路板122的焊盘部122b放置在所述避让槽中，同时，使得焊盘部122b的下表面与所述音圈121电连接。因此，本实施例中的扬声器100，柔性电路板122的局部位置与所述音圈121连接，从而不会牺牲磁间隙135，进而可以提高扬声器100的声学性能，提高用户体验。
需要说明的是，对于避让槽的形状并没有作出限定，例如，避让槽的纵截面可以呈三角形、梯形或者呈矩形等结构。相应地，所述焊盘部122b的形状应当与所述避让槽的形状相匹配。
如图1和图3所示，所述扬声器100还设有与盆架110的远离所述振膜123的一端连接的连接环140，所述柔性电路板122设有卡槽122c，所述卡槽122c卡接所述连接环140并使所述连接环140与所述柔性电路板122固定连接。
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 (9)

  1. 一种扬声器，所述扬声器包括盆架以及收容于所述盆架内的振动系统和磁路系统，所述振动系统包括音圈、柔性电路板和振膜，其特征在于，所述柔性电路板包括主体部以及自所述主体部向内部延伸的焊盘部，所述焊盘部与所述音圈电连接，所述磁路系统对应所述焊盘部的位置设有容纳所述焊盘部的避让部。
  2. 根据权利要求1所述的扬声器，其特征在于，所述柔性电路板为条状结构，并且具有两个，两个柔性电路板对称设置于所述磁路系统的两侧。
  3. 根据权利要求2所述的扬声器，其特征在于，所述柔性电路板设置于所述磁路系统的长轴端的两侧，所述柔性电路板位于所述磁路系统和盆架之间。
  4. 根据权利要求1所述的扬声器，其特征在于，所述柔性电路板位于所述音圈的底部，所述焊盘部至少部分位于所述音圈的内侧。
  5. 根据权利要求4所述的扬声器，其特征在于，所述焊盘部与所述音圈的底部胶合。
  6. 根据权利要求1所述的扬声器，其特征在于，所述焊盘部位于所述磁路系统沿长度方向的中部位置。
  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框以及设置在所述磁框内的主磁钢，所述主磁钢与所述磁框之间具有磁间隙，所述音圈插置在所述磁间隙中，并且，所述避让部包括设置在所述磁框上的第一避让部和设置在所述主磁钢上的第二避让部。
  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设置在所述主磁钢上的极芯，所述避让部还包括设置在所述极芯上的第三避让部。
  9. 根据权利要求1所述的扬声器，其特征在于，所述扬声器还设有与盆架的远离所述振膜的一端连接的连接环，所述柔性电路板设有卡槽，所述卡槽卡接所述连接环并使所述连接环与所述柔性电路板固定连接。
PCT/CN2019/088087 2018-08-05 2019-05-23 扬声器 Ceased WO2020029644A1 (zh)

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CN213126468U (zh) * 2020-09-27 2021-05-04 瑞声科技(新加坡)有限公司 扬声器模组及电子设备
CN214101751U (zh) * 2020-12-25 2021-08-31 瑞声光电科技(常州)有限公司 扬声器
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CN114666715B (zh) * 2022-04-29 2025-12-12 厦门东声电子有限公司 一种fpc和焊盘一体成型的扬声器及其组装方法

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