WO2021134362A1 - 一种扬声器 - Google Patents

一种扬声器 Download PDF

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Publication number
WO2021134362A1
WO2021134362A1 PCT/CN2019/130200 CN2019130200W WO2021134362A1 WO 2021134362 A1 WO2021134362 A1 WO 2021134362A1 CN 2019130200 W CN2019130200 W CN 2019130200W WO 2021134362 A1 WO2021134362 A1 WO 2021134362A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
arm
voice coil
coil assembly
splint
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PCT/CN2019/130200
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English (en)
French (fr)
Inventor
胡洪建
李帅
宋小军
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/CN2019/130200 priority Critical patent/WO2021134362A1/zh
Publication of WO2021134362A1 publication Critical patent/WO2021134362A1/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
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the technical field of loudspeaker material parts, in particular to a loudspeaker.
  • the basin frame of the vibration system and the magnetic circuit system includes a magnetic steel providing a magnetic field and a splint structure for clamping the magnetic steel.
  • the splint structure is divided into an upper splint and a lower splint.
  • the upper splint and the lower splint are made of magnetically conductive materials.
  • the upper splint is set in the basin.
  • the existing upper splint is generally a flat plate shape, and the lower splint is independent of each other and maintains a certain distance.
  • This kind of structure in which the upper and lower splints are far away from each other and is non-conducting obviously cannot increase the magnetic permeability effect. Therefore, the performance of the related speaker products is not high.
  • the purpose of the utility model is to provide a loudspeaker with high performance.
  • a speaker including a basin frame with a containing space, and a vibration system and a magnetic circuit system contained in the containing space;
  • the vibration system includes a diaphragm and a sound that drives the diaphragm to vibrate and produce sound Ring assembly, the diaphragm is located above the basin frame;
  • the magnetic circuit system includes a lower splint, a main magnet and an auxiliary magnet fixed on the lower splint, and an upper magnet fixed on the auxiliary magnet A splint, the auxiliary magnet and the main magnet are spaced apart to form a magnetic gap, and the voice coil assembly is inserted into the magnetic gap;
  • the upper splint includes a fixing part fixedly connected to the auxiliary magnet, The connecting portion connecting the fixed portion, the extension arm extending from the connecting portion toward the main magnetic steel, and the magnetic permeability enhancing arm extending from the extension arm toward the lower splint, so The magnetic permeability enhancement arm is spaced from the voice coil assembly, and the projection
  • the magnetic permeability enhancement arm is in contact with the lower splint.
  • the vibration system further includes a flexible circuit board
  • the flexible circuit board includes a first fixing portion fixed to the basin frame, and a second fixing portion connected to the end of the voice coil assembly away from the diaphragm.
  • the fixing part and the elastic part connecting the first fixing part and the second fixing part; the flexible circuit board is located under the extension arm, and the magnetic permeability enhancement arm is located between the voice coil assembly and the flexible Between circuit boards.
  • the projections of the magnetically conductive enhancement arm, the voice coil assembly and the flexible circuit board in the vibration direction do not overlap.
  • the connecting portion includes a first bending portion embedded in the basin frame, and the first bending portion extends in a direction close to the lower splint.
  • the two ends of the magnetic permeability enhancement arm facing the voice coil assembly are respectively provided with notched grooves for avoiding the voice coil assembly.
  • the notch slot extends from one end of the magnetic permeability enhancement arm close to the extension arm to the other end of the magnetic permeability enhancement arm close to the lower splint.
  • the included angle between the extension arm and the magnetic permeability enhancement arm is 90°.
  • the main magnet is rectangular, including a first side end located in the long axis direction and opposite to the auxiliary magnet, and a second side end located in the short axis direction; the extension arm faces the first side end. Extend on both sides.
  • the beneficial effect of the present invention is that by providing the upper splint with a magnetically permeable reinforcing arm extending in the direction of the lower splint, the magnetic permeability between the upper splint and the lower splint can be increased, thereby improving the performance of the entire magnetic circuit system. Performance, which in turn improves the performance of the speaker.
  • Figure 1 is a schematic diagram of a speaker in an embodiment of the present invention.
  • Figure 2 is a schematic diagram of the upper splint in an embodiment of the utility model.
  • Fig. 3 is a schematic cross-sectional view of the structure in the direction of A-A in Fig. 1.
  • Fig. 4 is an enlarged view of C in Fig. 3.
  • Figure 5 is a schematic diagram of the sectional structure in the direction of B-B in Figure 1
  • Fig. 6 is a schematic diagram of an exploded structure of a loudspeaker in an embodiment of the present invention.
  • a speaker including a basin 2 with a receiving space, and a vibration system 3 and a magnetic circuit system received in the receiving space;
  • the vibration system 3 includes a diaphragm 32 and a drive A voice coil assembly 31 that vibrates and emits sound by a diaphragm 32, the diaphragm 32 is located above the basin frame 2, and its edge is fixedly connected with the basin frame 2.
  • the magnetic circuit system includes a lower splint 12, a main magnet 13 and an auxiliary magnet 14 fixed on the lower splint 12, an upper splint 11 fixed on the auxiliary magnet 14, and a main magnet 13 ⁇ 15 ⁇ On the magnetic sheet 15.
  • the secondary magnetic steel 14 and the main magnetic steel 13 are spaced apart to form a magnetic gap 16, the voice coil assembly 31 is inserted into the magnetic gap, and the lower clamping plate 12 and the upper clamping plate 11 are made of magnetically conductive materials.
  • the main magnet 13 is rectangular and includes a first side end 131 in the long axis direction and a second side end 132 in the short axis direction.
  • the secondary magnet 14 is located on the long axis of the main magnet 13 It is parallel to the first side end 131 to form a magnetic gap 16.
  • the upper splint 11 includes a fixing portion 111, a connecting portion 112 connected to the fixing portion 111, an extension arm 113 extending from the connecting portion 112 in a direction close to the main magnetic steel 13, and from the extension arm 113
  • the magnetic permeability enhancing arm 114 is bent and extended toward the direction close to the lower splint 12.
  • the fixing portion 111 is fixed above the secondary magnetic steel 14 for magnetic conduction.
  • the connecting portion 112 connects the fixed portions 111 respectively located above the secondary magnetic steel 14 to form a ring structure.
  • the extension arm 113 extends from the connecting portion 112 toward the main magnet 13.
  • the vibration system further includes a flexible circuit board 33.
  • the flexible circuit board 33 includes a first fixing portion 332 fixed to the basin frame, and a second fixing portion connected to an end of the voice coil assembly away from the diaphragm. 330 and the elastic portion 331 connecting the first fixing portion 332 and the second fixing portion 330; the flexible circuit board 33 is located below the extension arm 113, and the magnetic permeability enhancement arm 114 is located at the sound Between the ring assembly 31 and the flexible circuit board 33.
  • the projections of the magnetic permeability enhancement arm 114, the voice coil assembly 31, and the flexible circuit board 33 in the vibration direction do not overlap.
  • the extension arm 113 extends toward the second side end 132 of the main magnetic steel 13 to make way for the vibration of the flexible circuit board located under the upper clamping plate.
  • the magnetic permeability enhancement arm 114 extends from the extension arm 113 toward the lower splint 12, as shown in FIGS. 3 and 4, the magnetic permeability enhancement arm 114 is spaced from the voice coil assembly 31 with a certain interval therebetween. The distance and the overlap of the two projections perpendicular to the vibration direction increases the number of magnetic lines of induction passing through the voice coil assembly and enhances the magnetic induction intensity.
  • the magnetic permeability enhancement arm 114 also extends to the lower clamping plate 12 to contact the lower clamping plate 12, so that the magnetic flux of the upper clamping plate 11 and the lower clamping plate 12 is communicated, and the magnetism of the main magnet 12 in the minor axis direction is increased.
  • the magnetic circuit system is used for the loudspeaker and as the magnetic field supply part of the loudspeaker.
  • the main magnet 13 and the auxiliary magnet 14 provide the magnetic field.
  • the upper clamp 11 and the lower clamp 12 are provided to clamp each magnet.
  • the upper clamp 11 is used to clamp and fix each magnet through the fixing portion 111 and the lower clamp 12 steel. Since the upper splint 11 and the lower splint 12 need to be configured to have a magnetic permeability function, the upper splint 11 and the lower splint 12 should be made of a magnetically conductive material.
  • the secondary magnet is not provided in the minor axis direction of the main magnet 13, and its magnetism in the minor axis direction is weak.
  • the magnetic permeability enhancement arm 114 provided in the minor axis direction of the main magnet 13 is used to conduct the magnetism and increase the magnetism in the minor axis direction of the main magnet 13. More preferably, the magnetic permeability enhancing arm 114 is arranged close to contact the lower splint 12. Increasing the overall magnetic permeability of the upper splint 11 and the lower splint 12, thereby enhancing the performance of the entire magnetic circuit system, can also improve the performance when applied to speakers.
  • the two ends of the magnetic permeability enhancement arm 114 facing the voice coil assembly 31 are respectively provided with notches 1140 for avoiding the voice coil assembly.
  • the notch 1140 extends from one end of the magnetic permeability enhancement arm 114 close to the extension arm 113 to the other end of the magnetic permeability enhancement arm 114 close to the lower splint 12.
  • the included angle between the extension arm 113 and the magnetic permeability enhancement arm 114 is 90°.
  • the connecting portion 112 includes a first bending portion 1121 embedded in the basin frame 2, and the first bending portion 1121 extends in a direction close to the lower splint 12.
  • the fixing portion 111 includes a second bending portion 1111 embedded in the basin frame, and the second bending portion 1111 extends in a direction close to the diaphragm 32.

Abstract

本申请提供一种扬声器，其包括具有收容空间的盆架、以及收容于所述收容空间的振动系统和磁路系统；所述磁路系统包括下夹板、固定于所述下夹板上的主磁钢和副磁钢、以及固定于所述副磁钢上的上夹板，所述副磁钢与所述主磁钢间隔设置形成磁间隙；所述上夹板包括与所述副磁钢固定连接的固定部、连接所述固定部的连接部、自所述连接部朝靠近所述主磁钢方向延伸的延长臂以及自所述延长臂朝靠近所述下夹板方向弯折延伸的导磁增强臂。本申请设置的导磁加强臂，可以增加上夹板和下夹板之间的导磁性，提高整个磁路系统的性能，进而提高扬声器的性能。

Description

一种扬声器 技术领域
本实用新型涉及扬声器材部件技术领域，尤其涉及一种用于扬声器。
 背景技术
随着科技的快速发展，音频设备也不断快速发展，人们对音频设备的功能性要求越来越高，对于扬声器，主要包括振动发声的振动系统、驱动振动系统振动的磁路系统和用于收纳振动系统和磁路系统的盆架。磁路系统包括有提供磁场的磁钢和用于夹持磁钢的夹板结构，夹板结构分为上夹板和下夹板，上夹板和下夹板采用导磁材料制成，其中，上夹板设置在盆架内，且现有的上夹板一般为平直的板状，与下夹板相互独立，并保持一段距离。这种上夹板和下夹板相互远离且不导通的结构明显不能增加导磁效果，因而，相关扬声器产品的性能不高。
因此，有必要提供一种新的产品性能高的扬声器。
 技术问题
本实用新型的目的在于提供一种性能高的扬声器。
 技术解决方案
本实用新型的技术方案如下：一种扬声器，包括具有收容空间的盆架、以及收容于所述收容空间的振动系统和磁路系统；所述振动系统包括振膜和驱动振膜振动发声的音圈组件，所述振膜位于所述盆架上方；所述磁路系统包括下夹板、固定于所述下夹板上的主磁钢和副磁钢、以及固定于所述副磁钢上的上夹板，所述副磁钢与所述主磁钢间隔设置形成磁间隙，所述音圈组件插设于所述磁间隙中；所述上夹板包括与所述副磁钢固定连接的固定部、连接所述固定部的连接部、和自所述连接部朝靠近所述主磁钢方向延伸的延长臂以及自所述延长臂朝靠近所述下夹板方向弯折延伸的导磁增强臂，所述导磁增强臂与所述音圈组件间隔，且两者在垂直于振动方向上的投影部分重叠。
进一步，作为优选，所述导磁增强臂与所述下夹板接触。
进一步，作为优选，所述振动系统还包括柔性线路板，所述柔性线路板包括固定于所述盆架的第一固定部、与所述音圈组件远离所述振膜的一端连接的第二固定部以及连接所述第一固定部和所述第二固定部的弹性部；所述柔性线路板位于所述延长臂下方，且所述导磁增强臂位于所述音圈组件和所述柔性线路板之间。
进一步，作为优选，所述导磁增强臂、所述音圈组件和所述柔性线路板在振动方向上的投影无重叠。
进一步，作为优选，所述连接部包括嵌设于所述盆架的第一弯折部，所述第一弯折部沿靠近所述下夹板方向延伸。
进一步，作为优选，所述导磁增强臂面向所述音圈组件的两侧端分别设有为音圈组件避让的缺口槽。
进一步，作为优选，所述缺口槽自所述导磁增强臂靠近所述延长臂的一端延伸至所述导磁增强臂靠近所述下夹板的另一端。
进一步，作为优选，所述延长臂和所述导磁增强臂之间的夹角为90°。
进一步，作为优选，所述主磁钢为矩形，包括位于长轴方向并与所述副磁钢相对的第一侧端和位于短轴方向的第二侧端；所述延长臂向所述第二侧端延伸。
 有益效果
与现有技术相比，本实用新型的有益效果在于：通过在上夹板设置向下夹板方向延伸的导磁加强臂，可以增加上夹板和下夹板之间的导磁性，提高整个磁路系统的性能，进而提高扬声器的性能。
 附图说明
图1为本实用新型一实施例中扬声器的示意图。
图2为本实用新型一实施例中上夹板的示意图。
图3为图1中A-A方向剖视结构示意图。
图4为图3中C处的放大图。
图5为图1中B-B方向剖视结构示意图
图6本实用新型一实施例中扬声器的分解结构示意图。
 本发明的最佳实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
请参考图1到图6所示，一种扬声器，包括具有收容空间的盆架2、以及收容于所述收容空间的振动系统3和磁路系统；所述振动系统3包括振膜32和驱动振膜32振动发声的音圈组件31，所述振膜32位于所述盆架2上方，其边缘部与盆架2固定相连。
所述磁路系统包括下夹板12、固定于所述下夹板12上的主磁钢13和副磁钢14、固定于所述副磁钢14上的上夹板11、以及固定于主磁钢13上的导磁片15。所述副磁钢14与所述主磁钢13间隔设置形成磁间隙16，所述音圈组件31插设于所述磁间隙中，下夹板12和上夹板11均采用导磁材料制成。在本实施例中，主磁钢13为矩形，包括位于长轴方向的第一侧端131和位于短轴方向的第二侧端132，所述副磁钢14位于主磁钢13的长轴方向，并与所述第一侧端131平行相对以形成磁间隙16。
在本实施例中，上夹板11包括固定部111、连接固定部111的连接部112、自所述连接部112朝靠近所述主磁钢13方向延伸的延长臂113、以及自所述延长臂113朝靠近所述下夹板12方向弯折延伸的导磁增强臂114。固定部111固定于所述副磁钢14上方，用于导磁。连接部112将分别位于所述副磁钢14上方的固定部111相连，形成环状结构。延长臂113自所述连接部112朝靠近所述主磁钢13方向延伸。所述振动系统还包括柔性线路板33，所述柔性线路板33包括固定于所述盆架的第一固定部332、与所述音圈组件远离所述振膜的一端连接的第二固定部330以及连接所述第一固定部332和所述第二固定部330的弹性部331；所述柔性线路板33位于所述延长臂113的下方，且所述导磁增强臂114位于所述音圈组件31和所述柔性线路板33之间。所述导磁增强臂114、所述音圈组件31和所述柔性线路板33在振动方向上的投影无重叠。
具体的是，延长臂113朝主磁钢13的第二侧端132方向延伸，为位于所述上夹板下方的柔性线路板的振动让位。该导磁增强臂114自所述延长臂113朝靠近所述下夹板12方向延伸，如图3和图4所示，该导磁增强臂114与音圈组件31间隔，两者之间间隔一定距离，且，两者在垂直于振动方向上的投影部分重叠，增大了穿过所述音圈组件的磁感线数量，增强磁感应强度。进一步的，导磁增强臂114还延伸至下夹板12以与下夹板12接触，从而使上夹板11和下夹板12的导磁相通，增加主磁钢12在短轴方向的磁性。
本实用新型的基础方案中，磁路系统用于扬声器，并作为扬声器的磁场提供部分，具体由主磁钢13和副磁钢14提供磁场。为了稳固地设置主磁钢13和副磁钢14，通过设置上夹板11和下夹板12来夹持各磁钢，具体是上夹板11通过固定部111和下夹板12用来夹持固定各磁钢。由于需要将上夹板11和下夹板12设置成具有导磁功能，因此上夹板11和下夹板12要采用导磁材料制成。由于本实施例，在主磁钢13的短轴方向未设置副磁钢，其短轴方向的磁性较弱。在这个目的引导下，具体是在主磁钢13的短轴方向设置的导磁增强臂114来进行导磁，增加主磁钢13短轴方向的磁性。更优的是，导磁增强臂114被设置靠近至接触下夹板12。增加上夹板11和下夹板12整体的导磁性，进而增强整个磁路系统的性能，应用于扬声器其性能同样能提高。
优选的，所述导磁增强臂114面向所述音圈组件31的两侧端分别设有为音圈组件避让的缺口槽1140。缺口槽1140自所述导磁增强臂114靠近所述延长臂113的一端延伸至所述导磁增强臂114靠近所述下夹板12的另一端。
优选的，所述延长臂113和所述导磁增强臂114之间的夹角为90°。 优选的，如图4所示，所述连接部112包括嵌设于所述盆架2的第一弯折部1121，所述第一弯折部1121沿靠近所述下夹板12方向延伸。
优选的，如图5所示，所述固定部111包括嵌设于所述盆架的第二弯折部1111，所述第二弯折部1111沿靠近所述振膜32方向延伸。
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 (10)

  1. 一种扬声器，包括具有收容空间的盆架、以及收容于所述收容空间的振动系统和磁路系统；所述振动系统包括振膜和驱动振膜振动发声的音圈组件，所述振膜位于所述盆架上方；所述磁路系统包括下夹板、固定于所述下夹板上的主磁钢和副磁钢、以及固定于所述副磁钢上的上夹板，所述副磁钢与所述主磁钢间隔设置形成磁间隙，所述音圈组件插设于所述磁间隙中；其特征在于：所述上夹板包括与所述副磁钢固定连接的固定部、连接所述固定部的连接部、自所述连接部朝靠近所述主磁钢方向延伸的延长臂以及自所述延长臂朝靠近所述下夹板方向弯折延伸的导磁增强臂，所述导磁增强臂与所述音圈组件间隔，且两者在垂直于振动方向上的投影部分重叠。
  2. 根据权利要求1所述扬声器，其特征在于：所述导磁增强臂与所述下夹板接触。
  3. 根据权利要求1所述的扬声器，其特征在于：所述振动系统还包括柔性线路板，所述柔性线路板包括固定于所述盆架的第一固定部、与所述音圈组件远离所述振膜的一端连接的第二固定部以及连接所述第一固定部和所述第二固定部的弹性部；所述柔性线路板位于所述延长臂下方，且所述导磁增强臂位于所述音圈组件和所述柔性线路板之间。
  4. 根据权利要求3所述的扬声器，其特征在于：所述导磁增强臂、所述音圈组件和所述柔性线路板在振动方向上的投影无重叠。
  5. 根据权利要求1所述扬声器，其特征在于：所述连接部包括嵌设于所述盆架的第一弯折部，所述第一弯折部沿靠近所述下夹板方向延伸。
  6. 根据权利要求1所述扬声器，其特征在于：所述固定部包括嵌设于所述盆架的第二弯折部，所述第二弯折部沿靠近所述振膜方向延伸。
  7. 根据权利要求1所述扬声器，其特征在于：所述导磁增强臂面向所述音圈组件的两侧端分别设有为音圈组件避让的缺口槽。
  8. 根据权利要求7所述的扬声器，其特征在于：所述缺口槽自所述导磁增强臂靠近所述延长臂的一端延伸至所述导磁增强臂靠近所述下夹板的另一端。
  9. 根据权利要求1所述扬声器，其特征在于：所述延长臂和所述导磁增强臂之间的夹角为90°。
  10. 根据权利要求1所述扬声器，其特征在于：所述主磁钢为矩形，包括位于长轴方向并与所述副磁钢相对的第一侧端和位于短轴方向的第二侧端；所述延长臂向所述第二侧端延伸。
PCT/CN2019/130200 2019-12-30 2019-12-30 一种扬声器 WO2021134362A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204217121U (zh) * 2014-10-20 2015-03-18 瑞声光电科技(常州)有限公司 磁路系统及应用该磁路系统的电声器件
US20160212547A1 (en) * 2013-08-21 2016-07-21 Yeil Electronics Co., Ltd. Sensory signal output device
CN207354593U (zh) * 2017-08-28 2018-05-11 常州美欧电子有限公司 电磁扬声器
CN207968939U (zh) * 2018-02-02 2018-10-12 瑞声科技(新加坡)有限公司 微型发声器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160212547A1 (en) * 2013-08-21 2016-07-21 Yeil Electronics Co., Ltd. Sensory signal output device
CN204217121U (zh) * 2014-10-20 2015-03-18 瑞声光电科技(常州)有限公司 磁路系统及应用该磁路系统的电声器件
CN207354593U (zh) * 2017-08-28 2018-05-11 常州美欧电子有限公司 电磁扬声器
CN207968939U (zh) * 2018-02-02 2018-10-12 瑞声科技(新加坡)有限公司 微型发声器

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