WO2018233409A1 - 振膜及设有该振膜的微型发声器 - Google Patents

振膜及设有该振膜的微型发声器 Download PDF

Info

Publication number
WO2018233409A1
WO2018233409A1 PCT/CN2018/086885 CN2018086885W WO2018233409A1 WO 2018233409 A1 WO2018233409 A1 WO 2018233409A1 CN 2018086885 W CN2018086885 W CN 2018086885W WO 2018233409 A1 WO2018233409 A1 WO 2018233409A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
crescent
pattern
curved
patterns
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/CN2018/086885
Other languages
English (en)
French (fr)
Inventor
马文韬
孙雅静
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.)
Goertek Inc
Original Assignee
Goertek Inc
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 Goertek Inc filed Critical Goertek Inc
Publication of WO2018233409A1 publication Critical patent/WO2018233409A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
    • 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
    • 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 invention relates to the technical field of electroacoustic products, in particular to a diaphragm and a microphone provided with the diaphragm.
  • Micro-speaker is an important acoustic component in portable electronic equipment. It is used to convert acoustic electric signals into sound signals. It is an energy conversion device.
  • the micro-speaker usually includes a vibration system including a diaphragm and a voice coil, and the diaphragm includes a central portion, a folding portion and a fixing portion which are sequentially combined from the inside to the outside, and the diaphragm is a micro-sounding device.
  • the important components play a vital role in the sound performance of the micro-speaker, which determines the quality of the micro-speaker from electrical energy to acoustic energy.
  • the pattern of the folding portion of the existing diaphragm is generally linear, and the pattern extends from one side edge to the other side edge of the folding ring portion.
  • the diaphragm of such a structure generates the following defects when vibrating:
  • the diaphragm is less compliant, resulting in lower sensitivity of the micro-sounder and poor acoustic performance
  • the diaphragm is prone to wrinkles at the four corners when vibrating, resulting in higher harmonic distortion, and at the same time, the diaphragm ring is fatigued, and it is difficult to pass the reliability test.
  • the first technical problem to be solved by the present invention is to provide a diaphragm which has stable vibration, high compliantness, and is less prone to wrinkles at the corners, and can effectively reduce high-order harmonic distortion and can improve The reliability and sound quality of the micro-speaker.
  • the second technical problem to be solved by the present invention is to provide a micro-sounding device which does not generate noise, has high sensitivity, low harmonic distortion and high sound quality.
  • the technical solution of the present invention is:
  • a diaphragm comprising a central portion, a folding ring portion and a fixing portion which are sequentially connected from the inside to the outside, wherein the folding ring portion is provided with a pattern, and the pattern includes a plurality of crescents in a front projection surface of the diaphragm a pattern, and each of the crescent patterns extends from an inner edge of the loop portion toward an outer edge of the loop portion.
  • both ends of each of the crescent patterns are respectively connected to an inner edge and an outer edge of the folding ring portion.
  • the diaphragm is square or racetrack-shaped, and the folding portion includes curved corners and first and second sides respectively connected at opposite ends of the curved corners The crescent pattern is distributed at the curved corner.
  • each crescent pattern located at the same arc corner is sequentially arranged, and each of the crescent patterns is from the first side to the second side Bending, or both being bent by the second side toward the first side.
  • the crescent pattern at each of the arcuate corners has the same bending direction, or the crescent of the crescent pattern located at two adjacent arcuate corners The opposite direction.
  • the number of the crescent patterns on each of the curved corners is the same.
  • the pattern extends from the curved corner to a portion where the first side and the second side are close to the curved corner.
  • the number of the crescent-shaped strips on the first side and the second side at both ends of the same arc-shaped corner is the same.
  • the curvature of the crescent on the curved corner is smaller than the curvature of the crescent on the first side and the second side .
  • the technical solution of the present invention is:
  • a miniature sound generator comprising a vibration system and a magnetic circuit system, the vibration system comprising a diaphragm and a voice coil combined, the diaphragm being the diaphragm.
  • the folded portion of the diaphragm of the present invention is provided with a pattern
  • the pattern includes a plurality of crescent patterns in the orthographic projection surface of the diaphragm, and the crescent pattern extends from the inner edge of the loop portion to the outer edge.
  • the diaphragm of the micro-sounder of the present invention is the diaphragm described above, noise is not generated, sensitivity is high, high-order harmonic distortion is small, sound quality is high, and reliability margin is large.
  • the diaphragm of the present invention and the micro-speaker provided with the diaphragm solve the technical problems of unstable vibration, low compliantness, and easy wrinkling of the diaphragm in the prior art, and the diaphragm of the present invention and the same
  • the diaphragm of the micro-sounder of the diaphragm has stable vibration, high compliantness, less wrinkles and strong fatigue resistance, so that the micro-sounder has high sensitivity, small distortion, high sound quality and large reliability margin.
  • Figure 1 is a schematic view showing the orthographic projection structure of the diaphragm of the present invention
  • FIG. 2 is a schematic view showing the orthographic projection structure of another diaphragm of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a diaphragm includes a center portion 14, a folded ring portion 12, and a fixing portion 10 which are integrally connected in order from the inside to the outside.
  • a pattern is distributed on the folded ring portion 12, and the pattern includes a plurality of crescent patterns 20, and each of the crescent patterns 20 is directed from the inner side edge of the folded ring portion 12 to the outer side of the folded ring portion 12. Extends in the direction of the edge.
  • both ends of each of the crescent patterns 20 are respectively connected to the inner side edge and the outer side edge of the folding ring portion 12.
  • the folds of the crescent pattern will be narrow to wide, and then transition from wide to narrow, which can effectively reduce the fold wrinkles and reduce the nonlinear vibration, making the diaphragm vibrate more smoothly. It effectively suppresses harmonic distortion and improves the reliability and sound quality of the microspeaker.
  • the inner side of the loop portion 12 refers to the side close to the diaphragm center portion 14.
  • the outer side of the loop portion 12 refers to the side close to the diaphragm fixing portion 10.
  • the crescent pattern 20 may have a concave pattern opposite to the convex direction of the folded ring portion 12, or a ridge pattern similar to the convex direction of the folded ring portion 12 may be employed.
  • the diaphragm has a square structure
  • the corresponding folding portion 12 has a square ring structure, and includes a curved corner and a first side and a second side connected to the two ends of the curved corner, and the curved corner
  • the crescent pattern 20 is placed on the curved corner. It is preferred that the pattern is disposed at the corner of the arc. In the actual application, the pattern may be disposed on the first side and the second side of the folding portion. This embodiment does not limit this.
  • the diaphragm may also be a structure of other shapes, such as a racetrack-shaped structure, which is not limited by the present invention.
  • the loop is a ring-shaped structure of a corresponding shape.
  • the folding ring may be a racetrack-shaped annular structure.
  • a plurality of crescent-shaped patterns 20 are arranged at each of the curved corners, and each crescent-shaped pattern 20 located at the same curved corner is sequentially arranged, and each crescent-shaped pattern is arranged.
  • Each of the 20 is curved from the first side to the second side, or each of the crescent patterns 20 is bent from the second side toward the first side.
  • the crescent patterns 20 at the two arc-shaped corners disposed diagonally among the four curved corners are all bent from the first side to the second side, and the other two corners are disposed at opposite corners.
  • the crescent pattern 20 is bent from the second side to the first side, that is, the crescent pattern 20 at each curved corner has the same bending direction, and all the crescent patterns 20 on the entire diaphragm are along the folding portion. 12 is clockwise or counterclockwise.
  • the number of crescent patterns 20 on the respective curved corners is the same, and the pattern is extended from the curved corner to the first side and the second side is close to the curved shape.
  • the number of crescents 20 on the first side and the second side of the corners of the same curved corner is the same.
  • there are nine crescent-shaped patterns 20 in each pattern five of which are located on the curved corners, and the other four are respectively located on the first side and the second side of the curved corners, and each side is provided There are two. This structure is advantageous for improving the polarization of the diaphragm and improving the sound quality of the microphone.
  • the number of the crescent patterns in each pattern is not limited to the nine in the embodiment, and the designer can increase or decrease according to the structure of the diaphragm and the performance of the product, and the crescent pattern of the embodiment is The number of articles is not limited.
  • the crescent-shaped pattern can also be disposed only on the curved corners, or can also be covered with the entire folding ring, and the designer can also adjust according to the structure of the diaphragm and the performance of the product, which is not limited in this embodiment.
  • the length of the crescent 20 on the curved corner is greater than the length of the crescent 20 on the first side and the second side, correspondingly in the arc shape.
  • the curvature of the crescent pattern 20 on the corner is smaller than the curvature of the crescent pattern 20 on the first side and the second side, that is, the curvature of the crescent pattern 20 on the first side and the second side is larger.
  • This design is determined by the structure of the loop portion because the width of the loop portion at the arcuate corner is larger than the width of the loop portion at the first side and the second side, so that each crescent according to the structure of the loop portion
  • the shape pattern 20 is designed to have a structure of varying length and curvature, which can effectively alleviate the problem of large stress at the corner of the diaphragm, effectively reduce polarization, improve the fatigue resistance of the folding ring portion, and improve the reliability margin of the micro sounder.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment is basically the same as the first embodiment, and the difference is:
  • the crescents 20 at the four arcuate corners are each bent from the first side to the second side; or both are bent from the second side to the first side, that is, the crescents 20 located at the adjacent two curved corners
  • the bending directions are opposite, and the patterns at the adjacent two curved corners are symmetrically disposed with respect to the x-axis centerline or the y-axis centerline of the diaphragm.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a miniature sound generator comprising a vibration system and a magnetic circuit system, the vibration system comprising a diaphragm and a voice coil combined, the diaphragm being the diaphragm described in the first embodiment or the second embodiment.
  • micro-speaker of the present invention adopts the diaphragm described in the first embodiment or the second embodiment, it has the advantages of no noise, high sensitivity, low harmonic distortion, high sound quality, and large reliability margin.

Landscapes

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

Abstract

本发明公开了一种振膜及设有该振膜的微型发声器，涉及电声产品技术领域，包括由内向外依次连接的中心部、折环部和固定部，所述折环部上分布有花纹，在所述振膜的正投影面内，所述花纹包括多条月牙形花纹，且每条所述月牙形花纹均由所述折环部的内侧边缘向所述折环部的外侧边缘方向延伸。本发明振膜及设有该振膜的微型发声器的振膜振动平稳、顺性高、不易产生褶皱、抗疲劳能力强，从而微型发声器的灵敏度高，失真小，可靠性余量大。

Description

振膜及设有该振膜的微型发声器 技术领域
本发明涉及电声产品技术领域，特别涉及一种振膜及设有该振膜的微型发声器。
背景技术
微型发声器是便携式电子设备中一种重要的声学部件，用于将声波电信号转换成声音信号传出，是一种能量转换器件。微型发声器通常包括振动系统和磁路系统，振动系统包括结合在一起的振膜和音圈，振膜包括由内向外依次结合的中心部、折环部和固定部，振膜是微型发声器的重要部件，对微型发声器的放声性能有着至关重要的作用，它决定了微型发声器由电能到声能的转换质量。
现有振膜的折环部的花纹通常是呈直线形，且花纹由折环部的一侧边缘延伸至另一侧边缘，此种结构的振膜在振动时会产生如下缺陷：
一、振膜在大位移振动时会出现摇摆振动，振动不平稳，易有杂音出现；
二、振膜顺性较低，导致微型发声器的灵敏度较低，声学性能差；
三、振膜在振动时四角部易出现褶皱，导致高次谐波失真较高，同时还会使得振膜折环部疲劳，不易通过可靠性试验。
发明内容
针对以上缺陷，本发明所要解决的第一个技术问题是提供一种振膜，此振膜振动平稳，顺性较高，角部不易出现褶皱，能够有效的降低高次谐波失真，能够提高微型发声器的可靠性及声音质量。
基于同一个发明构思，本发明所要解决的第二个技术问题是提供一种微型发声器，此微型发声器不会产生杂音，灵敏度高，高次谐波失真小，声音质 量高。
为解决上述第一个技术问题，本发明的技术方案是：
一种振膜，包括由内向外依次连接的中心部、折环部和固定部，所述折环部上分布有花纹，在所述振膜的正投影面内，所述花纹包括多条月牙形花纹，且每条所述月牙形花纹均由所述折环部的内侧边缘向所述折环部的外侧边缘方向延伸。
其中，在所述振膜的正投影面内，各所述月牙形花纹的两端分别与所述折环部的内侧边缘和外侧边缘相连接。
其中，在所述振膜的正投影面内，所述振膜为方形或跑道形，所述折环部包括弧形拐角及分别连接在所述弧形拐角两端的第一边和第二边，所述月牙形花纹分布在所述弧形拐角处。
其中，在所述振膜的正投影面内，位于同一所述弧形拐角处的各月牙形花纹依次排布，且各所述月牙形花纹均由所述第一边向所述第二边弯曲，或均由所述第二边向所述第一边弯曲。
其中，在所述振膜的正投影面内，位于各所述弧形拐角处的所述月牙形花纹的弯曲方向均相同，或位于相邻两所述弧形拐角处的月牙形花纹的弯曲方向相反。
其中，在所述振膜的正投影面内，位于各所述弧形拐角上的所述月牙形花纹的条数相同。
其中，在所述振膜的正投影面内，所述花纹由所述弧形拐角处扩展到所述第一边和所述第二边靠近所述弧形拐角的部位上。
其中，在所述振膜的正投影面内，位于同一所述弧形拐角两端的所述第一边和所述第二边上的所述月牙形花纹条数相同。
其中，在所述振膜的正投影面内，位于所述弧形拐角上的所述月牙形花纹的弧度小于位于所述第一边和所述第二边上的所述月牙形花纹的弧度。
为解决上述第二个技术问题，本发明的技术方案是：
一种微型发声器，包括振动系统和磁路系统，所述振动系统包括结合在一起的振膜和音圈，所述振膜为上述振膜。
采用了上述技术方案后，本发明的有益效果是：
由于本发明振膜的折环部上设有花纹，在振膜的正投影面内，花纹包括多条月牙形花纹，月牙形花纹由折环部的内侧边缘向外侧边缘延伸。此种月牙形花纹在振膜振动时，花纹处褶皱会由窄到宽，再由宽到窄进行过渡，与现有技术中的直线形花纹的振膜相比具有如下优点：
一、能够有效的抑制振膜在大位移时摇摆振动，使得振膜在振动时更加平稳，不会产生杂音；
二、能够增加振膜的顺性，可使得微型发声器获得更高灵敏度，具有更优的低频性能；
三、能够减小振膜拐角处褶皱的产生，能够有效的降低谐振频率处的高次谐波失真，提高微型发声器的声音质量；
四、可以有效的减缓振膜拐角处应力大的问题，有效减轻偏振，提高折环部的抗疲劳能力，提高了微型发声器的可靠性余量。
由于本发明微型发声器的振膜为上述振膜，从而不会产生杂音，灵敏度高，高次谐波失真小，声音质量高，可靠性余量大。
综上所述，本发明振膜及设有该振膜的微型发声器解决了现有技术中振膜振动不平稳、顺性低、易产生褶皱等技术问题，本发明振膜及设有该振膜的微型发声器的振膜振动平稳、顺性高、不易产生褶皱、抗疲劳能力强，从而微型发声器的灵敏度高，失真小，声音质量高，可靠性余量大。
附图说明
图1是本发明振膜的正投影结构示意图；
图2是本发明另一种振膜的正投影结构示意图；
图中：10、固定部，12、折环部，14、中心部，20、月牙形花纹。
具体实施方式
下面结合附图和实施例，进一步阐述本发明。
实施例一：
如图1所示，一种振膜，包括由内向外依次连接为一体的中心部14、折环部12和固定部10。在振膜的正投影面内，折环部12上分布有花纹，花纹包括多条月牙形花纹20，且每条月牙形花纹20均由折环部12的内侧边缘向折环部12的外侧边缘方向延伸。
进一步的，在振膜的正投影面内，各月牙形花纹20的两端分别与折环部12的内侧边缘和外侧边缘相连接。在振膜振动时，月牙形花纹的花纹处褶皱会由窄到宽，再由宽到窄进行过渡，从而能够有效的减小折环褶皱，减小非线性振动，使得振膜振动时更加平稳，对谐波失真起到有效的抑制作用，能够提高微型发声器的可靠性和声音质量。
需要说明的是，折环部12的内侧是指靠近振膜中心部14的一侧。折环部12的外侧是指靠近振膜固定部10的一侧。
如图所示，月牙形花纹20可以采用与折环部12的凸起方向相反的凹花纹，也可以采用与折环部12的凸起方向相同的凸花纹。
如图1所示，本实施方式优选振膜为方形结构，相应的折环部12为方环形结构，包括弧形拐角及连接在弧形拐角两端的第一边和第二边，弧形拐角共设有四处，月牙形花纹20设置在弧形拐角上。花纹设置在弧形拐角处为本实施方式的优选，实际应用中花纹也可以设置在折环部的第一边和第二边上，本实施例对此不做限制。
需要说明的是，在本发明实施例中，振膜还可以是其他形状的结构，例如跑道形结构，本发明对此不做限制。并且在振膜的为其他形状的结构时，则折环为相应形状的环状结构。例如，在振膜为跑道形结构时，则折环可以为跑道形环状结构。
如图1所示，在振膜的正投影面内，各弧形拐角处均设有多条月牙形花纹20，位于同一弧形拐角处的各月牙形花纹20依次排列，且各月牙形花纹20均由第一边向第二边弯曲，或各月牙形花纹20均由第二边向第一边弯曲。
进一步的，本实施方式中，四个弧形拐角中对角设置的两弧形拐角处的月牙形花纹20均由第一边向第二边弯曲，另外的对角设置的两个弧形拐角处的月牙形花纹20均由第二边向第一边弯曲，即各弧形拐角处的月牙形花纹20 的弯曲方向均相同，整个振膜上的所有的月牙形花纹20均沿折环部12的顺时针方向或逆时针方向弯曲。
如图1所示，在振膜的正投影面内，位于各弧形拐角上的月牙形花纹20的条数相同，同时花纹由弧形拐角处扩展到第一边和第二边靠近弧形拐角的部位上，且位于同一弧形拐角两端的第一边和第二边上的月牙形花纹20条数相同。本实施方式中每一处花纹共设有九条月牙形花纹20，其中有五条位于弧形拐角上，另外的四条分别位于弧形拐角两端的第一边和第二边上，每一边上各设有两条。此种结构有利于改善振膜的偏振，提高微型发声器的声音质量。
需要说明的是，每一处花纹中月牙形花纹的条数并不限于本实施方式中的九条，设计人员可以根据振膜的结构及产品性能的要求进行增减，本实施例对月牙形花纹的条数并不作限制。同时月牙形花纹也可以仅设置在弧形拐角上，或者还可以布满整个折环，设计人员也根据振膜的结构及产品的性能进行调整，本实施例对此也不做限制。
如图1所示，在振膜的正投影面内，位于弧形拐角上的月牙形花纹20的长度大于位于第一边和第二边上的月牙形花纹20的长度，相应的位于弧形拐角上的月牙形花纹20的弧度小于位于第一边和第二边上的月牙形花纹20的弧度，即位于第一边和第二边上的月牙形花纹20的弯曲度较大。此种设计是由折环部的结构决定的，因为弧形拐角处的折环部的宽度大于第一边和第二边处的折环部的宽度，从而根据折环部的结构将各月牙形花纹20设计成长度和弧度不等的结构，可以有效的减缓振膜拐角处应力大的问题，有效减轻偏振，提高折环部的抗疲劳能力，提高了微型发声器的可靠性余量。
实施例二：
如图2所示，本实施方式与实施例一基本相同，其不同之处在于：
位于四个弧形拐角处的月牙形花纹20均由第一边向第二边弯曲；或均由第二边向第一边弯曲，即位于相邻两弧形拐角处的月牙形花纹20的弯曲方向相反，且位于相邻两弧形拐角处的花纹相对于振膜的x轴中心线或y轴中心线对称设置。
实施例三：
一种微型发声器，包括振动系统和磁路系统，振动系统包括结合在一起的振膜和音圈，振膜为实施例一或实施例二中描述的振膜。
由于本发明微型发声器采用了实施例一或实施例二中描述的振膜，从而具有不会产生杂音，灵敏度高，高次谐波失真小，声音质量高，可靠性余量大等优点。
本发明不局限于上述具体的实施方式，本领域的普通技术人员从上述构思出发，不经过创造性的劳动，所做出的种种变换，均落在本发明的保护范围之内。

Claims (10)

  1. 振膜，包括由内向外依次连接的中心部、折环部和固定部，所述折环部上分布有花纹，其特征在于，在所述振膜的正投影面内，所述花纹包括多条月牙形花纹，且每条所述月牙形花纹均由所述折环部的内侧边缘向所述折环部的外侧边缘方向延伸。
  2. 根据权利要求1所述的振膜，其特征在于，在所述振膜的正投影面内，各所述月牙形花纹的两端分别与所述折环部的内侧边缘和外侧边缘相连接。
  3. 根据权利要求2所述的振膜，其特征在于，在所述振膜的正投影面内，所述振膜为方形或跑道形，所述折环部包括弧形拐角及分别连接在所述弧形拐角两端的第一边和第二边，所述月牙形花纹分布在所述弧形拐角处。
  4. 根据权利要求3所述的振膜，其特征在于，在所述振膜的正投影面内，位于同一所述弧形拐角处的各所述月牙形花纹依次排布，且各所述月牙形花纹均由所述第一边向所述第二边弯曲，或均由所述第二边向所述第一边弯曲。
  5. 根据权利要求4所述的振膜，其特征在于，在所述振膜的正投影面内，位于各所述弧形拐角处的所述月牙形花纹的弯曲方向均相同，或位于相邻两所述弧形拐角处的月牙形花纹的弯曲方向相反。
  6. 根据权利要求5所述的振膜，其特征在于，在所述振膜的正投影面内，位于各所述弧形拐角上的所述月牙形花纹的条数相同。
  7. 根据权利要求6所述的振膜，其特征在于，在所述振膜的正投影面内，所述花纹由所述弧形拐角处扩展到所述第一边和所述第二边靠近所述弧形拐角的部位上。
  8. 根据权利要求7所述的振膜，其特征在于，在所述振膜的正投影面内，位于同一所述弧形拐角两端的所述第一边和所述第二边上的所述月牙形花纹条数相同。
  9. 根据权利要求7所述的振膜，其特征在于，在所述振膜的正投影面内，位于所述弧形拐角上的所述月牙形花纹的弧度小于位于所述第一边和所述第二边上的所述月牙形花纹的弧度。
  10. 微型发声器，包括振动系统和磁路系统，所述振动系统包括结合在一起的振膜和音圈，其特征在于，所述振膜为权利要求1至9任一权利要求所述的振膜。
PCT/CN2018/086885 2017-06-19 2018-05-15 振膜及设有该振膜的微型发声器 Ceased WO2018233409A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720714215.9U CN207070329U (zh) 2017-06-19 2017-06-19 振膜及设有该振膜的微型发声器
CN201720714215.9 2017-06-19

Publications (1)

Publication Number Publication Date
WO2018233409A1 true WO2018233409A1 (zh) 2018-12-27

Family

ID=61509054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/086885 Ceased WO2018233409A1 (zh) 2017-06-19 2018-05-15 振膜及设有该振膜的微型发声器

Country Status (2)

Country Link
CN (1) CN207070329U (zh)
WO (1) WO2018233409A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111935609A (zh) * 2020-06-30 2020-11-13 瑞声新能源发展(常州)有限公司科教城分公司 一种新型振膜

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008245120A (ja) * 2007-03-28 2008-10-09 Kenta Tanaka スピーカ装置
CN201869353U (zh) * 2010-11-15 2011-06-15 歌尔声学股份有限公司 一种微型动圈式发声器振膜
CN204539452U (zh) * 2015-03-30 2015-08-05 歌尔声学股份有限公司 扬声器振膜
CN205320269U (zh) * 2015-12-29 2016-06-15 易力声科技(深圳)有限公司 一种弧纹扬声器膜片
CN207150812U (zh) * 2017-06-19 2018-03-27 歌尔股份有限公司 振膜及设有该振膜的微型发声器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008245120A (ja) * 2007-03-28 2008-10-09 Kenta Tanaka スピーカ装置
CN201869353U (zh) * 2010-11-15 2011-06-15 歌尔声学股份有限公司 一种微型动圈式发声器振膜
CN204539452U (zh) * 2015-03-30 2015-08-05 歌尔声学股份有限公司 扬声器振膜
CN205320269U (zh) * 2015-12-29 2016-06-15 易力声科技(深圳)有限公司 一种弧纹扬声器膜片
CN207150812U (zh) * 2017-06-19 2018-03-27 歌尔股份有限公司 振膜及设有该振膜的微型发声器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111935609A (zh) * 2020-06-30 2020-11-13 瑞声新能源发展(常州)有限公司科教城分公司 一种新型振膜

Also Published As

Publication number Publication date
CN207070329U (zh) 2018-03-02

Similar Documents

Publication Publication Date Title
WO2020119239A1 (zh) 扬声器
WO2020125171A1 (zh) 一种扬声器
CN105979431A (zh) 一种无源辐射器及扬声器
WO2019128423A1 (zh) 扬声器振膜及扬声器
WO2020181890A1 (zh) 双面微型发声装置和电子产品
WO2018214785A1 (zh) 振膜及设有该振膜的微型发声器
WO2018233410A1 (zh) 振膜及设有该振膜的微型发声器
CN105554643A (zh) 音膜及具有该音膜的发声器
CN206908822U (zh) 振膜及设有该振膜的微型发声器
WO2018233409A1 (zh) 振膜及设有该振膜的微型发声器
CN207150812U (zh) 振膜及设有该振膜的微型发声器
WO2022000601A1 (zh) 一种新型振膜
CN207266276U (zh) 振膜及设有该振膜的微型发声器
WO2019128422A1 (zh) 一种振膜及电声转换器
CN203708476U (zh) 扬声器
CN109936804A (zh) 音膜及具有该音膜的发声器件
CN206932393U (zh) 振膜及设有该振膜的微型发声器
WO2020125170A1 (zh) 一种扬声器
CN111669686A (zh) 一种发声装置
CN204069308U (zh) 振膜
WO2020199132A1 (zh) 喇叭音响
CN215072971U (zh) 具有弹波的矩形微型扬声器
CN208638579U (zh) 振膜、发声器件及电子设备
CN205213030U (zh) 振膜及具有该振膜的发声器
CN217825341U (zh) 一种振膜及微型扬声器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18821360

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18821360

Country of ref document: EP

Kind code of ref document: A1