WO2020113738A1 - Dispositif d'émission de son et procédé de traitement utilisé pour un ensemble membrane d'un dispositif d'émission de son - Google Patents

Dispositif d'émission de son et procédé de traitement utilisé pour un ensemble membrane d'un dispositif d'émission de son Download PDF

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Publication number
WO2020113738A1
WO2020113738A1 PCT/CN2018/125544 CN2018125544W WO2020113738A1 WO 2020113738 A1 WO2020113738 A1 WO 2020113738A1 CN 2018125544 W CN2018125544 W CN 2018125544W WO 2020113738 A1 WO2020113738 A1 WO 2020113738A1
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WO
WIPO (PCT)
Prior art keywords
ring
diaphragm
convex edge
edge
fixing portion
Prior art date
Application number
PCT/CN2018/125544
Other languages
English (en)
Chinese (zh)
Inventor
郭晓冬
孙雅静
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020113738A1 publication Critical patent/WO2020113738A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/001—Moulding aspects of diaphragm or surround

Definitions

  • the invention relates to the technical field of sound energy conversion, in particular to a sound generating device and a processing method of a diaphragm assembly used for the sound generating device.
  • the diaphragm is soft and easily deformed, in order to facilitate the installation of the diaphragm, a steel ring is usually added, the diaphragm is first bonded to the steel ring, so that the periphery of the diaphragm is fixed, and then the The steel ring is fixed with the shell.
  • the bonding area between the steel ring and the diaphragm needs to be large to ensure a stable bonding between the diaphragm and the steel ring, but an excessively large bonding area means that the width of the steel ring needs to be large, and
  • the outer diameter of the steel ring is usually fixed according to the overall shape of the sounding device, so it is only possible to increase the bonding area of the steel ring by reducing the inner diameter of the steel ring, which causes the inner surface of the steel ring to be closer to the vibration
  • the folded part of the membrane causes the effective vibration area of the diaphragm to decrease, which in turn affects the sound effect.
  • the main purpose of the present invention is to propose a sound-generating device, which aims to ensure the stable adhesion of the diaphragm and the metal ring while avoiding the impact on the vibration of the diaphragm.
  • the sound generating device proposed by the present invention includes:
  • a metal ring is fixed to one end of the casing, the metal ring includes a ring-shaped body and a convex edge, the ring-shaped body extends along the circumferential direction of the shell, the convex edge is connected to the ring-shaped body, and Extending along the circumference of the annular body;
  • the diaphragm includes a central portion, a folded ring portion disposed around the central portion, and an edge portion disposed around the folded ring portion, the edge portion includes a first fixing portion and a second fixing portion, the first fixing portion It is arranged around the folded ring portion and fixed to the surface of the ring-shaped body facing away from the housing, the second fixing portion is connected to the outer edge of the first fixing portion, and is fixed to the side of the convex edge .
  • the protrusion is protrudingly provided toward the housing, and the second fixing portion is fixed to the outer side of the protrusion.
  • a gap is provided between the surface of the housing facing the diaphragm and the outer peripheral surface, and the convex edge extends into the gap.
  • the protrusion is protrudingly provided in a direction away from the housing, and the second fixing portion is fixed to the inner side of the protrusion.
  • the ring-shaped body is provided with two convex edges, and the two convex edges are provided on two opposite sides of the ring-shaped body; the edge portion includes two of the second fixing portions and two The second fixing portion is provided on two opposite sides of the first fixing portion.
  • the inner side of the convex edge is flush with the inner circumferential surface of the ring-shaped body, and/or the outer side of the convex edge is flush with the outer circumferential surface of the ring-shaped body.
  • both the convex edge and the second fixing portion are ring-shaped.
  • first fixing portion and the second fixing portion are respectively bonded to the metal ring.
  • the width of the annular body is greater than or equal to 0.2 mm; and/or, the height of the convex edge is greater than or equal to 0.15 mm.
  • the present invention also proposes a processing method for a diaphragm assembly of a sound-emitting device.
  • the processing method includes:
  • the diaphragm is fixed to the metal sheet, an edge portion of the diaphragm is bent and extended along the side of the convex edge to form a second fixing portion, and the second fixing portion is fixed to the convex edge side;
  • the bent metal sheet forms a metal ring
  • the processing method includes:
  • the diaphragm on the bent portion constitutes a second fixing portion
  • the metal sheet on the bent portion constitutes a convex edge
  • the bent metal sheet constitutes a metal ring.
  • the second fixing portion of the diaphragm can be fixed to the side surface of the convex edge, and the fixing surface on the metal ring for fixing the diaphragm changes from the end surface of the original annular body to a convex
  • the side surface and the end surface of the ring-shaped body provide a part of the fixing surface for the fixing of the diaphragm, so that the width of the ring-shaped body can be reduced while ensuring the reliable fixing of the diaphragm and the metal ring, that is,
  • the inner circumferential size of the ring-shaped body can be increased, so that the inner circumferential surface of the ring-shaped body is arranged more outward than the folded ring portion, so that the effective vibration area of the diaphragm can be increased, so that the sound effect of the sound generating device is improved.
  • the height of the convex edge can be increased to make the fixing surface between the convex edge and the diaphragm larger, thereby improving the connection stability between the diaphragm and the metal ring. Furthermore, the provision of the convex edge can play a role in strengthening the structural strength of the metal ring.
  • FIG. 1 is a schematic structural diagram of an embodiment of a sound-generating device of the present invention
  • FIG. 2 is a schematic plan view of the sounding device in FIG. 1;
  • FIG. 3 is a schematic cross-sectional view at A-A in FIG. 2;
  • FIG. 4 is an enlarged view at B in FIG. 3;
  • FIG. 5 is a schematic diagram of the assembly of the diaphragm and the metal ring in FIG. 1;
  • FIG. 6 is a schematic diagram of the structure of the diaphragm in FIG. 5;
  • FIG. 7 is a schematic diagram of the structure of the metal ring in FIG. 5;
  • FIG. 8 is a schematic structural view of the housing in FIG. 1;
  • FIG. 9 is a schematic cross-sectional view of another embodiment of the sound emitting device of the present invention.
  • FIG. 10 is an enlarged view at C in FIG. 9;
  • FIG. 11 is a schematic diagram of the assembly of the diaphragm and the metal ring in FIG. 9;
  • FIG. 12 is a schematic flowchart of an embodiment of a method for processing a diaphragm assembly of the present invention
  • FIG. 13 is a schematic flowchart of another embodiment of a processing method of a diaphragm assembly of the present invention.
  • Label name Label name 10 shell twenty two Fold ring 11 Yield gap twenty three Center 20 Diaphragm 30 metal ring
  • the directional indicator is only used to explain a specific posture (as shown in the drawings) The relative positional relationship, movements, etc. of the components below, if the specific posture changes, then the directional indication changes accordingly.
  • first”, “second”, etc. are for descriptive purposes only, and cannot be understood as instructions or hints Its relative importance or implicitly indicates the number of technical features indicated.
  • the features defined with “first” and “second” may include at least one of the features either explicitly or implicitly.
  • the meaning of “and/or” appearing throughout the text is to include three parallel plans, taking “A and/or B as an example”, including plan A, or plan B, or plans that both A and B satisfy.
  • technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those skilled in the art to realize. When the combination of technical solutions contradicts or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the protection scope claimed by the present invention.
  • the present invention provides a sound-generating device.
  • the sound-generating device may be a speaker unit, a speaker module, or a terminal electronic device, such as an earphone, a mobile phone, or a tablet.
  • the sound-emitting device includes a housing 10, a vibration system, and a magnetic circuit system.
  • the housing 10 is used to house a fixed vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm 20 including a central portion 23, a folded ring portion 22 disposed around the central portion 23, and an edge portion 21 disposed around the folded ring portion 22.
  • the diaphragm 20 may further include a center Part 23 of the composite layer.
  • the sound-emitting device may further include a front cover (not shown in the figure), the front cover is combined above the housing 10, and the front cover and the housing 10 enclose a protective frame. Of course, in some cases, the sound emitting device may not include the front cover.
  • the edge portion 21 of the diaphragm 20 includes a first fixing portion 211 and a second fixing portion 212 connected to each other.
  • the first fixing portion 211 is disposed around the folded ring portion 22 and is connected to the folded ring
  • the second fixing portion 212 is connected to the outer edge of the first fixing portion 211, and the second fixing portion 212 is bent toward one side relative to the first fixing portion 211, for example, the second fixing portion 212 faces the folding ring portion 22 The side where it is located is bent, or the second fixing portion 212 is bent away from the folding ring portion 22.
  • the sound-emitting device further includes a metal ring 30 fixed to one end of the housing 10 (this end refers to the open end of the housing 10, and the open end is located near the diaphragm 20),
  • the metal ring 30 includes a ring-shaped body 31 and a protruding edge 32.
  • the ring-shaped body 31 extends along the circumferential direction of the housing 10.
  • the protrusion 32 is connected to the ring-shaped body 31 and extends along the circumference of the ring-shaped body 31.
  • the first fixing portion 211 is fixed to the surface of the ring-shaped body 31 facing away from the housing 10, and the second fixing portion 212 is fixed to the side surface of the convex edge 32.
  • the ring-shaped body 31 may be generally arranged in a square ring shape, but it is not limited to a square ring here, and may also be a ring or a ring of other shapes, which is specifically set according to the outer shape of the sound emitting device.
  • the metal ring 30 is a steel ring or other materials can also be used.
  • the first fixing portion 211 and the second fixing portion 212 are respectively bonded to the metal ring 30.
  • the first fixing portion 211 and the second fixing portion 212 can also be welded and fixed to the metal ring 30 respectively.
  • the diaphragm 20 is directly bonded to the housing 10 since the folded portion 22 and the edge portion 21 of the diaphragm 20 are both thin-film structures, the strength is low, and the center cannot be supported by the edge portion 21 placed on the housing 10 When the weight of the portion 23 and the folded ring portion 22 is not solidified, the edge portion 21 is easily pulled and deformed by the weight of the center portion 23 and the folded ring portion 22 pulling the edge portion 21.
  • the diaphragm 20 and the metal ring 30 can be fixed first, and the diaphragm 20 can be supported by other supporting structures during the fixing process to avoid the central portion 23 and The weight of the folded ring portion 22 causes the edge portion 21 to be pulled.
  • the diaphragm assembly composed of the diaphragm 20 and the metal ring 30 is fixed to the housing 10, so that deformation of the diaphragm 20 can be avoided The bonding is unstable.
  • the second fixing portion 212 of the diaphragm 20 can be fixed to the side of the protrusion 32, and the fixing surface of the metal ring 30 for fixing the diaphragm 20 is formed by the original ring body 31 The end surface, the side surface that becomes the convex edge 32, and the end surface of the ring-shaped body 31.
  • the increase of the convex edge 32 provides a part of the fixing surface for fixing the diaphragm 20, it can ensure that the diaphragm 20 and the metal ring 30 are reliably fixed
  • the width of the ring-shaped body 31 the inner circumference of the ring-shaped body 31 can be increased, so that the inner circumferential surface of the ring-shaped body 31 is arranged more outward than the folded ring portion 22, which can increase vibration
  • the effective vibration area of the membrane 20 improves the sound effect of the sounding device.
  • the height of the convex edge 32 may be increased to make the fixing surface between the convex edge 32 and the diaphragm 20 larger, thereby improving the connection stability between the diaphragm 20 and the metal ring 30.
  • the arrangement of the convex edge 32 can play a role in strengthening the structural strength of the metal ring 30.
  • the convex edge 32 protrudes toward the housing 10, that is, the convex edge 32 is provided on the surface of the ring-shaped body 31 facing the housing 10, and the second fixing portion 212 is fixed On the outer side of the convex edge 32.
  • the ring-shaped body 31 is in contact with the upper surface of the housing 10, the protruding edge 32 is located on the outer peripheral surface of the housing 10, which is equivalent to inverting the metal ring 30 on the housing 10, and the protruding edge 32 and the outer peripheral surface of the housing 10
  • the abutment plays a positioning role, preventing the metal ring 30 from translating on the housing 10.
  • the connection between the upper surface of the housing 10 (that is, the surface of the housing 10 facing the diaphragm 20) and the outer peripheral surface is provided with a notch 11, and the convex edge 32 extends into the notch 11 and outside the second fixing portion 212
  • the side surface may be flush with the outer peripheral surface of the housing 10.
  • the placement of the notch 11 can prevent the diaphragm 20 and the metal ring 30 from being placed beyond the outer peripheral surface of the housing 10.
  • the height of the convex edge 32 can also be accommodated, so as to avoid the arrangement of the convex edge 32 from affecting the overall height of the sound generating device Increase.
  • the second fixing portion 212 is flush with the bottom surface of the convex edge 32, so as to ensure that the second fixing portion 212 makes full use of the outer side of the convex edge 32 to achieve effective fixing.
  • the convex edge 32 protrudes away from the housing 10, that is, the convex edge 32 is provided on the surface of the ring-shaped body 31 facing away from the housing 10, and the second fixing portion 212 It is fixed to the inner side of the convex edge 32.
  • the entire lower surface of the ring-shaped body 31 is in contact with the upper surface of the housing 10, so that the contact area between the two is larger, which facilitates better fixing between the two.
  • the second fixing portion 212 is flush with the upper surface of the convex edge 32, so as to ensure that the second fixing portion 212 makes full use of the inner side of the convex edge 32 to achieve effective fixing.
  • the ring body 31 is provided with two convex edges 32.
  • the two convex edges 32 are located on opposite sides of the ring body 31; correspondingly, the edge portion 21
  • the two second fixing portions 212 are arranged on two opposite sides of the first fixing portion 211.
  • the two second fixing portions 212 are connected to the two convex edges 32 in one-to-one correspondence.
  • the force of the two convex edges 32 on the diaphragm 20 is the same, so that the diaphragm 20 can be symmetrically fixed, so the force is more Uniform and better stability.
  • the inner side surface of the convex edge 32 is flush with the inner circumferential surface of the ring-shaped body 31, and/or the outer side surface of the convex edge 32 is flush with the outer circumferential surface of the ring-shaped body 31.
  • the inner side of the convex edge 32 is flush with the inner circumferential surface of the annular body 31, and the outer side of the convex edge 32 is flush with the outer circumferential surface of the annular body 31, which is equivalent to the width of the convex edge 32 and Since the width of the ring-shaped body 31 is the same, the protrusion 32 can be prevented from exceeding the inner circumferential surface of the ring-shaped body 31 and occupying the vibration area of the diaphragm 20, and at the same time, the protrusion 32 can be prevented from exceeding the outer circumferential surface of the ring-shaped body 31 and causing sound The outer circumference of the device is too large.
  • the first fixing portion 211 is adhesively fixed to the position of the annular body 31 where the protruding edge 32 is not provided, while the protruding edge is provided At the position 32, the first fixing portion 211 is exposed in the inner hole of the ring-shaped body 31 because the convex edge 32 blocks the ring-shaped body 31.
  • the inner side of the convex edge 32 is flush with the inner circumferential surface of the ring-shaped body 31, or the outer side of the convex edge 32 is flush with the outer circumferential surface of the ring-shaped body 31.
  • the convex edge 32 and the second fixing portion 212 are both ring-shaped, so that any position of the diaphragm 20 in the circumferential direction can be fixed to the convex edge 32, greatly improving the fixation of the two stability.
  • the width of the ring-shaped body 31 is greater than or equal to 0.2 mm; and/or, the height of the convex edge 32 is greater than or equal to 0.15 mm.
  • the width of the ring-shaped body 31 is 0.2 mm or 0.3 mm, and the height of the convex edge 32 is 0.15 mm or 0.2 mm.
  • the width of the metal ring 30 is 0.35 mm, that is, the width of the coated tape of the diaphragm 20 corresponds to 0.35 mm; and after the convex edge 32 is provided, the width of the ring-shaped body 31 can be reduced to 0.2mm, the height of the convex edge 32 is 0.15mm, the width of the coated tape on the diaphragm 20 is unchanged, it is still 0.35mm, so that under the condition that the fixed area of the diaphragm 20 and the metal ring 30 is unchanged, it can be reduced The width of the small metal ring 30 increases the effective vibration area of the diaphragm 20.
  • the height of the convex edge 32 can be set larger, and the width of the coated tape on the diaphragm 20 is correspondingly increased, thereby increasing the effective width of the coated tape on the diaphragm 20 and increasing the stability of the product connection Sex.
  • the present invention also proposes a processing method for a diaphragm assembly of a sound-emitting device.
  • the processing method includes:
  • Step S10 bending the edges of the ring-shaped metal sheet integrally to form a convex edge
  • Step S20 the diaphragm is fixed to the metal sheet, the edge of the diaphragm is bent and extended along the side of the convex edge to form a second fixing portion, and the second fixing portion is fixed to the side of the convex edge;
  • the bent metal sheet constitutes a metal ring 30, and the metal ring 30 includes an annular body 31 and a protruding edge 32, and the diaphragm 20 is fixed to the annular body 31.
  • the metal sheet is first processed into a ring shape, that is, a through hole is formed in the middle of the metal sheet, and then the edge of the metal sheet is bent.
  • the bent portion forms the convex edge 32 of the metal ring 30.
  • the unbent portion constitutes the annular body 31 of the metal ring 30.
  • the present invention also proposes a processing method for a diaphragm assembly of a sound-emitting device.
  • the processing method includes:
  • Step S30 fixing the diaphragm and the ring-shaped metal sheet to form a diaphragm assembly
  • Step S40 bending the edge of the diaphragm assembly to form a bent portion
  • the diaphragm 20 on the bent portion constitutes the second fixing portion 212
  • the metal sheet on the bent portion constitutes the convex edge 32
  • the bent metal sheet constitutes the metal ring 30.
  • the metal sheet is processed into a ring shape, that is, a through hole is formed in the middle of the metal sheet, and then the diaphragm 20 and the metal sheet are bonded and fixed, and finally the two are bent and formed at the same time.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

La présente invention concerne un dispositif d'émission de son et un procédé de traitement utilisé pour un ensemble membrane d'un dispositif d'émission de son, le dispositif d'émission de son comprenant : un boîtier ; un anneau métallique, qui est fixé à une extrémité du boîtier et qui comprend un corps principal circulaire et un bord relevé, le corps principal circulaire s'étendant le long de la circonférence du boîtier, et le bord relevé étant relié au corps principal circulaire et s'étendant le long de la périphérie du corps principal de circuit ; et une membrane, qui comprend une partie centrale, une partie bague de pliage qui est disposée autour de la partie centrale et une partie de bord qui est disposée autour de la partie bague de pliage ; la partie de bord comprend une première partie fixe et une seconde partie fixe, la première partie fixe étant disposée autour de la partie bague de pliage et étant fixée sur une surface du corps principal circulaire qui s'écarte du boîtier, et la seconde partie fixe étant reliée à la périphérie de la première partie fixe et étant fixée sur une surface latérale du bord relevé. La solution technique de la présente invention évite l'influence sur les vibrations d'une membrane tout en garantissant l'adhésion stable de la membrane et d'un anneau métallique.
PCT/CN2018/125544 2018-12-07 2018-12-29 Dispositif d'émission de son et procédé de traitement utilisé pour un ensemble membrane d'un dispositif d'émission de son WO2020113738A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811501424.0A CN109511079A (zh) 2018-12-07 2018-12-07 发声装置、用于发声装置的振膜组件的加工方法
CN201811501424.0 2018-12-07

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WO2020113738A1 true WO2020113738A1 (fr) 2020-06-11

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Publication number Priority date Publication date Assignee Title
WO2020258226A1 (fr) * 2019-06-28 2020-12-30 瑞声声学科技(深圳)有限公司 Haut-parleur
CN110830888A (zh) * 2019-11-12 2020-02-21 歌尔股份有限公司 一种振膜及包括其的发声器单体
CN110996223A (zh) * 2019-11-29 2020-04-10 歌尔股份有限公司 发声器及电子产品
CN111918198B (zh) * 2020-07-06 2022-03-01 瑞声新能源发展(常州)有限公司科教城分公司 振膜成型工艺

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CN103873991A (zh) * 2014-02-26 2014-06-18 谭红梅 一种扩展扬声器驱动器频率响应范围的方法及装置
CN106911988A (zh) * 2017-03-31 2017-06-30 歌尔股份有限公司 振膜、扬声器及其组装方法
CN107087243A (zh) * 2017-06-20 2017-08-22 努比亚技术有限公司 一种双折环振膜、扬声器及移动终端
CN107889037A (zh) * 2017-12-22 2018-04-06 奥音精密机械（镇江）有限公司 一种分体式高强度受话器

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JP2010166144A (ja) * 2009-01-13 2010-07-29 Jass Hipster Corp スピーカーの構造
CN205545914U (zh) * 2016-01-29 2016-08-31 瑞声光电科技(常州)有限公司 扬声器
CN206341411U (zh) * 2016-12-12 2017-07-18 瑞声科技(新加坡)有限公司 扬声器单体及扬声器箱
CN207083217U (zh) * 2017-07-17 2018-03-09 瑞声精密电子沭阳有限公司 发声器
CN107277719A (zh) * 2017-07-28 2017-10-20 常州市润蒙声学科技有限公司 扬声器
CN209017309U (zh) * 2018-12-07 2019-06-21 歌尔股份有限公司 发声装置

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Publication number Priority date Publication date Assignee Title
CN103873991A (zh) * 2014-02-26 2014-06-18 谭红梅 一种扩展扬声器驱动器频率响应范围的方法及装置
CN106911988A (zh) * 2017-03-31 2017-06-30 歌尔股份有限公司 振膜、扬声器及其组装方法
CN107087243A (zh) * 2017-06-20 2017-08-22 努比亚技术有限公司 一种双折环振膜、扬声器及移动终端
CN107889037A (zh) * 2017-12-22 2018-04-06 奥音精密机械（镇江）有限公司 一种分体式高强度受话器

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