WO2022000601A1 - 一种新型振膜 - Google Patents

一种新型振膜 Download PDF

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Publication number
WO2022000601A1
WO2022000601A1 PCT/CN2020/103095 CN2020103095W WO2022000601A1 WO 2022000601 A1 WO2022000601 A1 WO 2022000601A1 CN 2020103095 W CN2020103095 W CN 2020103095W WO 2022000601 A1 WO2022000601 A1 WO 2022000601A1
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WO
WIPO (PCT)
Prior art keywords
ring
folded
bent ring
side edges
new type
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PCT/CN2020/103095
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English (en)
French (fr)
Inventor
梁平
赵彬
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瑞声声学科技(深圳)有限公司
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Publication of WO2022000601A1 publication Critical patent/WO2022000601A1/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
    • 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; 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
    • 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 loudspeakers, in particular to a novel diaphragm.
  • the conventional structure of a loudspeaker generally includes a magnetic circuit system and a vibration system.
  • the vibration system includes a diaphragm and a voice coil. After receiving the current signal from the external circuit, the voice coil will reciprocate and cut the magnetic line of force under the action of the electromagnetic field. The diaphragm vibrates, and then radiates sound waves to the outside world, thereby completing the conversion of electrical energy into sound energy. It can be seen from the above description that the diaphragm is one of the key components of the loudspeaker to vibrate and produce sound.
  • the loudspeaker diaphragm in the prior art includes a central part of the diaphragm and a peripheral part of the diaphragm, and a U-shaped racetrack ring (also called a folding ring) integrally connected between the central part of the diaphragm and the peripheral part of the diaphragm and raised upwards.
  • the U-shaped runway ring realizes the vibration amplitude through the U-shaped runway ring, so as to enhance the acoustic performance of the sound generator.
  • a design idea is to reduce the width of the U-shaped track ring, that is, to limit the overall width of the U-shaped track ring to a smaller range, but based on the same material, this kind of The adjustment of the structural specifications will cause the U-shaped runway ring to have insufficient amplitude in actual use and cannot meet the corresponding acoustic effect requirements.
  • the width of the U-shaped racetrack ring on the diaphragm can be reduced, and the amplitude can be increased under the condition of low width, so as to meet the requirements of the entire diaphragm on the functional device as a speaker. performance requirements.
  • a novel diaphragm comprising a central part, a peripheral part and a folded ring part connecting the central part and the peripheral part
  • the folded ring part comprises a first folded ring, a second folded ring and a connecting part connecting the first folded ring and the second folded ring and located therebetween
  • the first folded ring comprises a first edge end connected with the central part and a second edge end connected with the connecting part
  • the second fold ring comprises a first peripheral end connected with the connecting portion and a second peripheral end connected with the peripheral portion; the first fold ring and the second fold ring bulge in the same direction.
  • the height of the bulge of the first fold is greater than the height of the bulge of the second fold.
  • the width of the first folding ring perpendicular to the protruding direction is greater than the width of the second folding ring perpendicular to the protruding direction.
  • the connecting portion protrudes opposite to the bulging direction of the first folding ring.
  • first folding ring is provided with a first corrugated portion for strengthening its strength, and the first corrugated portion extends from the first edge end to the second edge end.
  • the number of the first corrugated parts is multiple and is in the shape of a strip.
  • novel diaphragm further includes a second corrugated portion for strengthening its strength, and the second corrugated portion extends continuously from the second edge end to the first peripheral end.
  • the second folded portion is strip-shaped, and the number is multiple.
  • the first folding ring includes four straight side edges and four arc segments connecting the four straight side edges, the four side edges and the four arc segments form a closed rounded rectangle, and the first folded portion includes four groups, and are respectively distributed at the four arc segments of the first folding ring.
  • both the second folding ring and the connecting portion include four straight side edges and four arc segments connecting the four straight side edges, and the four side edges and the four arc segments form a closed rounded rectangle, and the second The corrugated parts include four groups, and are respectively distributed at the four straight side edges of the second folded ring, the connecting part and the first folded ring.
  • the beneficial effect of the present utility model is that: the present utility model has obvious differences in structure compared with the diaphragm in the prior art.
  • the folded ring part includes two parts: the first folded ring and the second folded ring, and the two parts share the same
  • the formed folded ring portion can have a higher amplitude when the entire folded ring portion has a lower width, thereby meeting the corresponding acoustic performance requirements.
  • Figure 1 is a schematic structural diagram of the utility model.
  • FIG. 2 is a schematic cross-sectional structure diagram of A-A in FIG. 1 .
  • FIG. 3 is an enlarged schematic view of part B in FIG. 2 .
  • a new type of diaphragm has a central part 1, a peripheral part 2, and a folded ring part 3 connecting the central part 1 and the peripheral part 2.
  • the folded ring part 3 includes a first folded ring 31, a second Two folding rings 32 and a connecting portion 33 connecting the first folding ring 31 and the second folding ring 32 and located therebetween, the first folding ring 31 includes a first edge end 311 connected with the central portion 1 and a connecting portion 33 The connected second edge end 312; the second folding ring 32 includes a first peripheral end 321 connected with the connecting portion 33 and a second peripheral end 322 connected with the peripheral portion 2; the first folding ring 31 and the second folding ring 32 Bulge in the same direction.
  • the central part 1 of the diaphragm is generally connected to the top of the dome, and the outer part 2 is connected to the basin frame for being fixed.
  • the collar portion 3 provides elastic properties for the amplitude variation of the central portion 1 relative to the peripheral portion 2 .
  • the folded ring portion 3 is formed by the first folded ring 31 and the second folded ring 32.
  • this structure uses two folded rings when the widths of the two are the same. greater amplitude. It means that under the overall idea of reducing the width of the folded ring, the use of two folded rings produces a larger amplitude than the use of one folded ring, which can meet the acoustic performance requirements of sounding as a speaker vibration system.
  • the raised height H1 of the first folding ring 31 is greater than the raised height H2 of the second folding ring 32 .
  • the amplitude of the position close to the central portion 1 can be further expanded through the difference in the height of the bulge, and the acoustic effect is better.
  • the width W1 of the first folding ring 31 perpendicular to the bulging direction is greater than the width W2 of the second folding ring 32 perpendicular to the rising direction.
  • the connecting portion 33 protrudes opposite to the bulging direction of the first folding ring.
  • the connecting portion 33 forms a reverse protrusion, and forms a wavy smooth structure with the two raised folded ring portions, so as to ensure the overall vibration effect.
  • the first folding ring 31 is provided with a first corrugated portion 315 for strengthening its strength, and the first corrugated portion 315 extends from the first edge end 311 to the second edge end 312 .
  • the function of the first corrugated portion 315 is to strengthen the structural strength of the first folding ring 31 .
  • the number of the first corrugated portions 312 is multiple and is in the shape of a strip.
  • the effect of having a plurality of first corrugated portions 315 is to further improve the structural strength of the entire diaphragm.
  • the novel diaphragm further includes a second corrugated portion 34 for strengthening its strength, and the second corrugated portion 34 extends continuously from the second edge end 312 to the first peripheral end 321, that is, the second corrugated portion 34.
  • the corrugated portion 34 extends from the second edge end 312 to the first peripheral end 321 through the connecting portion 33 .
  • the effect of the arrangement of the second pleated portion 34 is to strengthen the structural strength of the connection between the first folding ring 31 and the second folding ring 32 .
  • the second corrugated portion 34 is strip-shaped, and the number is multiple.
  • the plurality of second corrugated portions 34 further strengthen the structural strength of the entire diaphragm.
  • the first folding ring 31 includes four straight side edges 313 and four arc segments 314 connecting the four straight side edges.
  • the four side edges and the four arc segments form a closed rounded rectangle.
  • a folded portion 315 includes four groups, which are respectively distributed at the four arc segments 314 of the first folding ring 31 .
  • a specific structural form of the first folding ring 31 is provided, and this structure is adapted to the shape of the entire speaker.
  • the second folding ring 32 and the connecting portion 33 each include four straight side edges 323, 331 and four arc segments 324, 332 connecting the four straight side edges, four straight side edges and four circles
  • the arc segment forms a closed rectangle with rounded corners
  • the second folded portion 34 includes four groups, which are respectively distributed on the four straight side edges 313 , 323 , 331 of the second folding ring 32 , the connecting portion 33 and the first folding ring.
  • a specific structural form of the second folding ring 32 is provided, and this structure is adapted to the shape of the entire speaker.

Abstract

本方案提供了一种新型振膜，包括中心部、外围部以及连接所述中心部和外围部的折环部，其特征在于，所述折环部包括第一折环、第二折环和连接第一折环和第二折环并位于两者之间的连接部，所述第一折环包括与所述中心部相连的第一边沿端和与所述连接部相连的第二边沿端；所述第二折环包括与所述连接部相连的第一周端和与所述外围部相连的第二周端；所述第一折环和第二折环向同一个方向隆起。本实用新型相对现有技术中的振膜在结构上有明显差异，具体是折环部分为第一折环和第二折环两个部分，该两个部分共同组成的折环部在整个折环部宽度较低的状态下，能够拥有更高的振幅，进而满足相应的声学性能要求。

Description

一种新型振膜 技术领域
本实用新型涉及扬声器技术领域，尤其是一种新型振膜。
 背景技术
扬声器作为一种能够将电能转化为声能的器件，现已广泛应用于手机、电脑、 PAD等移动终端中，扬声器性能的优劣直接影响着与其配合的移动终端装置的声放效果。扬声器的常规结构一般包括磁路系统和振动系统，其中，振动系统又包括振膜和音圈，音圈在接收到外部电路的电流信号之后，会在电磁场的作用下做往复切割磁力线的运动，带动振膜振动，进而向外界辐射声波，由此完成电能到声能的转化。从上述描述可见，振膜是扬声器振动发声的关键部件之一。
 技术问题
现有技术中的扬声器振膜包括振膜中心部和振膜外围部以及一体连接于该振膜中心部和振膜外围部之间并向上隆起的U形跑道环（也可称为折环），该U形跑道环通过U形跑道环实现振摆幅度，以此增强发声器的声学性能。随着产品品质要求的提高，一种设计思路是将U形跑道环的宽度缩小，即将U性跑道环整体的宽度限定在一个更小的范围内，但是基于材料不变的情况下，这种结构规格上的调整会造成U形跑道环在实际使用时振幅不够，无法满足相应的声学效果需求。
因此，有必要提供一种新型振膜，通过结构调整，使得振膜上的U形跑道环在宽度降低，在低宽度条件下振幅能够提高，以满足整个振膜在作为扬声器的功能性器件上的性能要求。
 技术解决方案
本实用新型的目的在于提供一种新型振膜。
本实用新型的技术方案如下：一种新型振膜，包括中心部、外围部以及连接所述中心部和外围部的折环部，所述折环部包括第一折环、第二折环和连接第一折环和第二折环并位于两者之间的连接部，所述第一折环包括与所述中心部相连的第一边沿端和与所述连接部相连的第二边沿端；所述第二折环包括与所述连接部相连的第一周端和与所述外围部相连的第二周端；所述第一折环和第二折环向同一个方向隆起。
进一步，所述第一折环隆起的高度大于所述第二折环隆起的高度。
进一步，所述第一折环垂直于隆起方向的宽度大于第二折环垂直于隆起方向的宽度。
进一步，所述连接部朝所述第一折环隆起方向相反凸起。
进一步，所述第一折环上设置有用于加强其强度的第一褶皱部，第一褶皱部自所述第一边沿端延伸至第二边沿端。
进一步，所述第一褶皱部的数量为多个，呈条形状。
进一步，所述新型振膜还包括用于加强其强度的第二褶皱部，所述第二褶皱部自所述第二边沿端连续延伸至第一周端。
进一步，所述第二褶皱部呈条形，且数量为多个。
进一步，所述第一折环包括四条直线侧边以及连接四条直线侧边的四条圆弧段,四条侧边和四条圆弧段形成闭合的圆角矩形，所述第一褶皱部包括四组，并分别分布于第一折环的四条圆弧段处。
进一步，所述第二折环和所述连接部均包括四条直线侧边以及连接四条直线侧边的四条圆弧段，四条侧边和四条圆弧段形成闭合的圆角矩形，所述第二褶皱部包括四组，并分别分布于第二折环、所述连接部与第一折环的四条直线侧边处。
 有益效果
本实用新型的有益效果在于：本实用新型相对现有技术中的振膜在结构上有明显差异，具体是折环部分包括第一折环和第二折环两个部分，该两个部分共同组成的折环部在整个折环部宽度较低的状态下，能够拥有更高的振幅，进而满足相应的声学性能要求。
 附图说明
图1为本实用新型的结构示意图。
图2为图1中A-A的剖视结构示意图。
图3是图2中B部分的放大示意图。
 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。
如图1-图3所示，一种新型振膜，具有中心部1、外围部2以及连接中心部1和外围部2的折环部3，折环部3包括第一折环31、第二折环32和连接第一折环31和第二折环32并位于两者之间的连接部33，第一折环31包括与中心部1相连的第一边沿端311和与连接部33相连的第二边沿端312；第二折环32包括与连接部33相连的第一周端321和与外围部2相连的第二周端322；第一折环31和第二折环32向同一个方向隆起。
本实用新型的基础方案中，振膜的中心部1一般连接到球顶上面，外围部2连接到盆架上以用于被固定。折环部3为中心部1相对外围部2的振幅变化提供弹性性能。在本方案中，折环部3由第一折环31和第二折环32形成，这种结构相对于现有的单一折环，在两者宽度一样的情况下，采用两个折环产生的振幅更大。意味着，在降低折环部宽度的整体思路下，采用两个折环比采用一个折环产生的振幅更大，能满足作为扬声器振动系统发声的声学性能需求。
在具体实施过程中，较佳地，第一折环31隆起的高度H1大于第二折环32隆起的高度H2。本优选方案中，通过隆起高度的差异，能够使得靠近中心部1的位置进一步扩大振幅，声学效果更好。
在具体实施过程中，较佳地，第一折环31垂直于隆起方向的宽度W1大于第二折环32垂直于隆起方向的宽度W2。
在具体实施过程中，较佳地，连接部33朝第一折环隆起方向相反凸起。本优选方案中，通过连接部33形成反向的凸起，与两个隆起的折环部形成波浪形的平滑的结构，保证整体的振动效果。
在具体实施过程中，较佳地，第一折环31上设置有用于加强其强度的第一褶皱部315，第一褶皱部315自第一边沿端311延伸至第二边沿端312。本优选方案中，第一褶皱部315的作用是加强第一折环31的结构强度。
在具体实施过程中，较佳地，第一褶皱部312的数量为多个，呈条形状。本优选方案中，第一褶皱部315的数量多个的效果是进一步提高整体振膜的结构强度。
在具体实施过程中，较佳地，新型振膜还包括用于加强其强度的第二褶皱部34，第二褶皱部34自第二边沿端312连续延伸至第一周端321，即第二褶皱部34自第二边沿端312经过连接部33延伸至第一周端321。本优选方案中，第二褶皱部34的设置效果在于加强第一折环31到第二折环32之间连接的结构强度。
在具体实施过程中，较佳地，第二褶皱部34呈条形，且数量为多个。本优选方案中，多个第二褶皱部34使得整体振膜的结构强度进一步加强。
在具体实施过程中，较佳地，第一折环31包括四条直线侧边313以及连接四条直线侧边的四条圆弧段314,四条侧边和四条圆弧段形成闭合的圆角矩形，第一褶皱部315包括四组，并分别分布于第一折环31的四条圆弧段314处。本优选方案中，提供了一种第一折环31的具体结构形态，这种结构适配整个扬声器的形状。
在具体实施过程中，较佳地，第二折环32和连接部33均包括四条直线侧边323、331以及连接四条直线侧边的四条圆弧段324、332，四条直线侧边和四条圆弧段形成闭合的圆角矩形，第二褶皱部34包括四组，并分别分布于第二折环32、连接部33与第一折环的四条直线侧边处313、323、331。本优选方案中，提供了一种第二折环32的具体结构形态，这种结构适配整个扬声器的形状。
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. 一种新型振膜，包括中心部、外围部以及连接所述中心部和外围部的折环部，其特征在于，所述折环部包括第一折环、第二折环和连接第一折环和第二折环并位于两者之间的连接部，所述第一折环包括与所述中心部相连的第一边沿端和与所述连接部相连的第二边沿端；所述第二折环包括与所述连接部相连的第一周端和与所述外围部相连的第二周端；所述第一折环和第二折环向同一个方向隆起。
  2. 根据权利要求1所述的新型振膜，其特征在于：所述第一折环隆起的高度大于所述第二折环隆起的高度。
  3. 根据权利要求1所述的新型振膜，其特征在于：所述第一折环垂直于隆起方向的宽度大于第二折环垂直于隆起方向的宽度。
  4. 根据权利要求1所述的新型振膜，其特征在于：所述连接部朝所述第一折环隆起方向相反凸起。
  5. 根据权利要求1-4中任意一项所述的新型振膜，其特征在于：所述第一折环上设置有用于加强其强度的第一褶皱部，第一褶皱部自所述第一边沿端延伸至第二边沿端。
  6. 根据权利要求5所述的新型振膜，其特征在于：所述第一褶皱部的数量为多个，呈条形状。
  7. 根据权利要求5所述的新型振膜，其特征在于：所述新型振膜还包括用于加强其强度的第二褶皱部，所述第二褶皱部自所述第二边沿端连续延伸至第一周端。
  8. 根据权利要求7所述的新型振膜，其特征在于：所述第二褶皱部呈条形，且数量为多个。
  9. 根据权利要求7所述的新型振膜，其特征在于：所述第一折环包括四条直线侧边以及连接四条直线侧边的四条圆弧段,四条侧边和四条圆弧段形成闭合的圆角矩形，所述第一褶皱部包括四组，并分别分布于第一折环的四条圆弧段处。
  10. 根据权利要求9所述的新型振膜，其特征在于：所述第二折环和所述连接部均包括四条直线侧边以及连接四条直线侧边的四条圆弧段，四条侧边和四条圆弧段形成闭合的圆角矩形，所述第二褶皱部包括四组，并分别分布于第二折环、所述连接部与第一折环的四条直线侧边处。
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