WO2012070729A1 - Micro haut-parleur - Google Patents

Micro haut-parleur Download PDF

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Publication number
WO2012070729A1
WO2012070729A1 PCT/KR2011/002617 KR2011002617W WO2012070729A1 WO 2012070729 A1 WO2012070729 A1 WO 2012070729A1 KR 2011002617 W KR2011002617 W KR 2011002617W WO 2012070729 A1 WO2012070729 A1 WO 2012070729A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension
fixed
frame
micro speaker
diaphragm
Prior art date
Application number
PCT/KR2011/002617
Other languages
English (en)
Korean (ko)
Inventor
권철영
정진우
김규동
Original Assignee
주식회사 비에스이
톈진 비에스이 일렉트로닉스 컴퍼니 리미티드
동관 바오싱 일렉트로닉스 컴퍼니 리미티드
롱쳉 바오싱 일렉트로닉 컴퍼니 리미티드
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 주식회사 비에스이, 톈진 비에스이 일렉트로닉스 컴퍼니 리미티드, 동관 바오싱 일렉트로닉스 컴퍼니 리미티드, 롱쳉 바오싱 일렉트로닉 컴퍼니 리미티드 filed Critical 주식회사 비에스이
Publication of WO2012070729A1 publication Critical patent/WO2012070729A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • 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
    • H04R31/006—Interconnection of transducer parts
    • 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
    • H04R7/02—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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to a micro speaker, and more particularly, by having a suspension integrally configured with a central portion serving as a conventional diaphragm dome, structurally simple, reducing the assembly process, electrically low resonance frequency (Fo) reproduction and a wide range of
  • the present invention relates to a micro speaker, which can obtain flat frequency characteristics.
  • a speaker is a device that converts an electrical signal into a voice signal.
  • Speakers include medium-to-large speakers that are connected to audio or amplifiers and used to amplify the volume, and are small portable devices such as mobile phones, laptops, MP3 players, and earphones. There are also small speakers for sound equipment. Such compact speakers are commonly referred to as micro speakers.
  • a conventional micro speaker 100 is illustrated as a schematic cross-sectional perspective view.
  • the micro speaker 100 includes a frame 110, a yoke 120, a permanent magnet 130, a plate 140, a diaphragm 150, a suspension 160, a voice coil 170, and a cover 180. It is.
  • the frame 110 is a member forming the external shape of the micro speaker, and other components are mounted.
  • the components of the yoke 120, the permanent magnet 130, and the plate 140 constitute a magnetic circuit.
  • the diaphragm 150 is divided into an inner portion 152 and an outer portion 154 based on the boundary portion 156.
  • the diaphragm 150 is formed integrally with all the inner, outer, and boundary portions.
  • the inner portion 152 is partly convex upwards, also called a dome.
  • the outer portion 154 is a portion surrounding the inner portion 152 to the outside.
  • the outer portion 154 is also convex upward as shown in the figure.
  • the inner part and the outer part of the diaphragm are different in the sound range mainly reproduced.
  • the outer part is made of a soft material, and when vibrated, the sound of the low range is mainly reproduced, and the inner part is made of a relatively hard material, and the sound of the high range is mainly reproduced.
  • the outer edge portion of the outer portion 154 is flat, the outer edge portion is fixed to the frame 110.
  • the cover 180 is coupled to the upper portion of the frame 110 to house other components.
  • the voice coil 170 is positioned below the boundary portion 156 between the outer portion and the inner portion with the suspension 160 interposed therebetween.
  • the upper end of the voice coil 170 formed by winding the conductive wire is bonded to the lower surface of the suspension 160 disposed below the diaphragm 150.
  • the diaphragm 150 is provided to control the movement in the vertical direction.
  • the suspension 160 serves to prevent the diaphragm 150 from properly vibrating only in the up and down direction and preventing movement in the left and right directions.
  • the lower side of the boundary portion 156 of the diaphragm 150 and the suspension 160 are fixed to each other, the outer edge is fixed to the frame 110 like the diaphragm.
  • the center portion of the suspension 160 penetrates in the vertical direction. That is, the suspension 160 is empty in the lower portion of the inner portion 152 of the diaphragm 150. In the suspension 160 positioned below the outer portion 154 of the diaphragm, a plurality of long bent grooves are formed.
  • These grooves are formed to allow the suspension 160 to vibrate with elasticity in the vertical direction.
  • the width, length, and shape of the grooves are adjusted, the magnitude of the elastic force in the vertical direction of the suspension is adjusted.
  • this problem can be partially solved by using a thinner diaphragm to solve the problem, but the problem that the diaphragm dome portion is softened together according to the integrated structure is still unable to receive the input.
  • the diaphragm is made of a separate member instead of an integral part, the number of parts increases and the number of assembly processes also increases, which leads to a problem in that the productivity of the product decreases and the unit price increases.
  • the present invention has been proposed in order to solve the above-mentioned problems, by integrating a part serving as a dome (inner part) of the diaphragm in the suspension, and thus, the reproduction band is wider and the input ratio is increased without increasing the number of parts as compared with the prior art. Its purpose is to be able to manufacture this high power speaker.
  • the present invention relates to a micro speaker comprising: a frame: a magnetic circuit portion comprising a yoke fixed to the frame, a permanent magnet fixed to the yoke, and a plate fixed to an upper surface of the permanent magnet; A diaphragm body whose edge is fixed to the frame, the center portion of which is penetrated; A suspension provided below the diaphragm body, the edge of which is fixed to the frame and integrally formed with a central portion and a peripheral portion; A voice coil fixed to a lower surface of the suspension and fixed to a lower surface of a boundary between the central portion and the peripheral portion; And a cover coupled to the frame.
  • the central portion of the suspension is preferably formed convex upward through the center portion of the diaphragm body.
  • the central portion of the suspension but facing the center portion of the diaphragm body, it is preferably formed convexly downward.
  • At least one rib is formed at the center of the suspension to protrude into a narrow and long shape.
  • the rib is provided with a plurality, it is preferable that the side spaced apart from each other provided.
  • the periphery of the suspension it is preferable that at least one portion is provided with a narrow and elongated shape, or at least a portion is provided with a corrugated shape.
  • the suspension polyvinyl chloride (PV), polystyrene naphthalate (PEN), polyphenylenesulfide (PPS), polyetheretherketone (PEEK), polyimide (Poly Imide; PI), polyetherimide (PEI), polycarbonate (PC), and those made by any one of the materials (NOMAX), it is preferably produced by the thermoforming method.
  • PV polyvinyl chloride
  • PEN polystyrene naphthalate
  • PPS polyphenylenesulfide
  • PEEK polyetheretherketone
  • PI Poly Imide
  • PEI polyetherimide
  • PC polycarbonate
  • NOMAX polycarbonate
  • the central portion formed integrally with the suspension serves as the dome portion of the diaphragm, thereby obtaining the effect of being able to manufacture a high output speaker having a high internal input.
  • the suspension is integrally formed including the dome portion of the conventional diaphragm, the number of parts is small, the assembly is easy, and the assembly cost can be reduced.
  • FIG. 1 is a schematic cross-sectional view of a conventional micro speaker
  • FIG. 2 is a schematic exploded perspective view of a micro speaker of one embodiment according to the present invention.
  • FIG. 3 is a schematic cross-sectional perspective view of the assembled state of the micro speaker of FIG.
  • FIG. 4 is a schematic cross-sectional view of the assembled state of the micro speaker of FIG.
  • FIG. 5 and 6 are top and side views, respectively, of the suspension of FIG. 2;
  • 7 and 8 are a plan view and a side view, respectively, of a suspension employed in another embodiment according to the present invention.
  • 9 and 10 are respectively perspective views of a suspension employed in another embodiment according to the present invention.
  • micro speaker 10 ... frame
  • the micro speaker 1 of the present embodiment includes a frame 10, a yoke 20, a permanent magnet 30, a plate 40, a diaphragm body 50, a suspension 60, a voice coil 70 and a cover ( 80).
  • the micro speaker 1 is a micro speaker used in a small acoustic device such as a mobile phone, earphone, MP3, or the like. It is a main feature of the present invention that the suspension 60 is integrally provided with a central portion, which is a portion which serves as a dome portion of a conventional diaphragm.
  • the frame 10 is usually made of plastic, and forms various external components of the speaker and is fixed therein.
  • the lower portion of the frame is coupled to the yoke 70 is sealed.
  • a cover 80 having a plurality of vent holes 82 is coupled. Between the upper end of the frame 10 and the cover 80, the edge portion that is the edge of the diaphragm body 50 and the suspension 60 is coupled and fixed.
  • the vent holes 82 of the cover 80 are configured to emit the generated sound to the outside.
  • the yoke 20 is made of a magnetic material and is fixed to the frame 10.
  • the permanent magnet 30 is formed of a disk-shaped member 32 in the center and a ring-shaped flat member 34 around the disk.
  • the permanent magnet 30 is fixed to the bottom surface of the yoke 20.
  • plates 42 and 44 On the upper surfaces of the permanent magnets 32 and 34, plates 42 and 44 having plane widths corresponding to the corresponding permanent magnets 32 and 34, respectively, are fixed.
  • the plate 40 is made of a magnetic material and consists of a disc-shaped member 42 in the middle and a flat member 44 around it.
  • a space is formed between the permanent magnet 30 and the plate 40, and a lower portion of the voice coil 70 is disposed in the space, along with the diaphragm body 50 and the suspension 60. It will vibrate.
  • the yoke 20, the permanent magnet 30 and the plate 40 constitute a magnetic circuit portion.
  • the magnetic flux generated in the inner permanent magnet 32 creates a magnetic flux path (path) that enters the yoke 20 again via the outer permanent magnet 34 and the plate 44 via the plate 42.
  • the yoke 20 is in the shape of a flat plate
  • the permanent magnet 30 and the plate 40 is an example that is composed of a disk member and a donut member on the outside, respectively
  • the present invention is not limited thereto.
  • the yoke may have a shape having a recessed receiving groove therein, and the permanent magnet and the plate may have a disk shape fixed in the receiving groove of the yoke.
  • the permanent magnet and the plate may each consist of one member.
  • a central portion of the diaphragm body 50 penetrates in the vertical direction.
  • the diaphragm body 50 vibrates up and down according to the movement of the voice coil 70 to create a sound pressure that can be heard by a person.
  • the diaphragm body 50 typically produces sound in the low band.
  • the diaphragm body 50 is made of a polymer compound, the specific material and shape can be variously modified.
  • the diaphragm body 50 may be formed of a relatively thin material as compared with the conventional diaphragm so as to reproduce a desired sound range.
  • the diaphragm body 50 of this embodiment is located outward with respect to the boundary part in which the upper end part of the voice coil 70 is located.
  • the diaphragm body 50 is a dome form, and each boundary part of an inner side and an outer side is flat.
  • the diaphragm body employed in the micro speaker of the present invention has only a portion penetrated in the vertical direction in the center portion, various changes are possible in other configurations such as specific shapes, materials, and thicknesses.
  • the suspension 60 is provided below the diaphragm body 50.
  • the edge of the suspension 60 is fixed to the frame 10.
  • the suspension 60 is comprised including the center part 62 and the peripheral part 64. As shown in FIG.
  • the central portion 62 and the peripheral portion 64 are integrally formed as one member.
  • the boundary where the central portion 62 and the peripheral portion 64 meet is the boundary portion 65.
  • the diaphragm body 50 is fixed to the upper side of the boundary portion, and the voice coil 70 is fixed to the lower side.
  • the suspension 60 is made of a polymer material which can be thermoformed, such as polyvinyl chloride (PV).
  • PV polyvinyl chloride
  • the suspension 60 can be manufactured by the method of injection molding.
  • the suspension may be selected from the group consisting of Polyethylene Naphthalate (PEN), Polyphenylenesulfide (PPS), Polyetheretherketone (PEEK), Polyimide (PI), and Polyimide (PI). It can be made using materials that can be manufactured by thermoforming methods such as etherimide (PEI), polycarbonate (PC) and NOMAX.
  • the center part 62 is formed convexly upward through the center penetrating part of the diaphragm body 50. As shown in FIG.
  • the central portion 62 is shaped similar to the dome portion of a conventional diaphragm.
  • the peripheral portion 64 of the suspension 60 is provided with all four portions 66 penetrated in a narrow and long shape.
  • the shape of the pierced portion 66 is symmetrically formed with respect to the center of the suspension 60.
  • the penetrated portion 66 allows the suspension 60 to vibrate with elasticity in the up and down direction. By adjusting the width, length, and shape of the penetrated portion 66, the amount of elastic force in the vertical direction of the suspension 60 may be adjusted.
  • the suspension 60 of the present embodiment is convex upward, the present invention is not limited thereto. That is, in another embodiment, the center portion of the suspension may be formed convexly downward, although not shown. In this case, as in the above-described embodiment, the central part faces the center penetrated portion of the diaphragm body and is located below the penetrated portion.
  • the electrical connection portion 90 is provided on one side of the frame 10.
  • the voice coil 70 is connected to the electrical connection unit 90 so that an electrical signal from an external electric device is applied to the voice coil 70.
  • the microspeaker 1 of the present embodiment has a diaphragm body having only an outer portion, a central portion penetrating upward and downward, and a dome portion, which is a central convex portion of the conventional diaphragm, is integrally provided in the suspension.
  • the advantage is that it can have a frequency characteristic.
  • the center of the suspension is mainly responsible for the high band, and the diaphragm body is mainly responsible for the disadvantage that sound of sufficient band cannot be reproduced. It is possible to have a wider frequency characteristic than in the prior art.
  • the suspension is integrally provided with the central portion, since the number of parts does not increase as compared with the related art, there is an advantage that no increase in manufacturing cost or increase due to the increase in the number of parts and processes occurs.
  • the central portion formed integrally with the suspension to serve as the dome portion of the diaphragm there is an advantage that it is possible to manufacture a high output speaker with a high internal input.
  • a modified suspension 60a is shown in plan view in FIG. 7, and in FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7.
  • the central portion 62a of the suspension 60a is provided with ribs 63a protruding upward in a narrow and long shape. Meanwhile, in another embodiment, the rib 63a may protrude downward.
  • All four ribs 63a are provided and are arranged side by side to be spaced apart from each other. Due to the configuration of the ribs 63a, the effect that the central portion 62a can have more rigidity can be obtained. On the other hand, in the case of another embodiment, the specific shape and number of ribs can be variously modified.
  • the modified suspensions 60b, 60c are shown as perspective views.
  • the central portions 62b and 62c of the suspensions 60b and 60c have the same configuration as the central portion 62 of the suspension 60 of the first embodiment, but the configuration of the peripheral portions 64b and 64c is modified.
  • the pleated portion folded in a zigzag is intermittently formed on the peripheral portion 64b intermittently.
  • the corrugated portion is entirely formed in the peripheral portion 64c.
  • the specific shape of the corrugated portion can be variously modified, and through such deformation, a desired degree of elastic force can be obtained.
  • the micro-speakers of the above-described embodiments have a cylindrical shape as a whole, and the internal components are also circular, but according to the embodiment, it is a shape such as an ellipse, a square, or a track of a playground rather than a circle. It may be modified to.

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

Abstract

La présente invention porte sur un micro haut-parleur qui comprend : un cadre; une unité de circuit magnétique qui a un collier de déviation qui est fixé audit cadre, un aimant permanent qui est fixé audit collier de déviation et une plaque qui est fixée à un côté supérieur dudit aimant permanent; un corps de diaphragme qui a un bord qui est fixé audit cadre, et a une partie intermédiaire qui est configurée pour être pénétrée; une suspension qui est positionnée sous ledit corps de diaphragme, a un bord qui est fixé audit cadre et a une partie centrale et une partie périphérique qui sont formées d'un seul tenant; une bobine acoustique qui est fixée à un côté inférieur de ladite suspension, ladite bobine acoustique étant fixée à un côté inférieur d'une bordure situé entre ladite partie centrale et ladite partie périphérique; et un couvercle qui est couplé audit cadre. Selon la présente invention, puisque le micro haut-parleur comprend la suspension ayant d'un seul tenant la partie centrale, le micro haut-parleur peut avoir des caractéristiques de reproduction en fréquence de résonance (Fo) électriquement basse et des caractéristiques de fréquence large et uniforme.
PCT/KR2011/002617 2010-11-22 2011-04-13 Micro haut-parleur WO2012070729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0116218 2010-11-22
KR1020100116218A KR101156053B1 (ko) 2010-11-22 2010-11-22 마이크로 스피커

Publications (1)

Publication Number Publication Date
WO2012070729A1 true WO2012070729A1 (fr) 2012-05-31

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Application Number Title Priority Date Filing Date
PCT/KR2011/002617 WO2012070729A1 (fr) 2010-11-22 2011-04-13 Micro haut-parleur

Country Status (4)

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KR (1) KR101156053B1 (fr)
CN (2) CN102480669B (fr)
TW (1) TWI499315B (fr)
WO (1) WO2012070729A1 (fr)

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KR101156053B1 (ko) * 2010-11-22 2012-06-20 주식회사 비에스이 마이크로 스피커
KR101415755B1 (ko) * 2012-06-14 2014-07-09 주식회사 이엠텍 음압 조절 기능을 지닌 음향변환장치
KR101363408B1 (ko) * 2012-07-30 2014-02-18 주식회사 이엠텍 음향변환장치의 서스펜션
KR101468630B1 (ko) * 2013-03-19 2014-12-04 부전전자 주식회사 진동판모듈 및 이를 이용한 마이크로 스피커
KR101483089B1 (ko) * 2013-04-24 2015-01-19 주식회사 이엠텍 음향변환장치의 서스펜션
KR101439915B1 (ko) * 2013-06-03 2014-09-15 주식회사 이엠텍 좁은 폭을 가지는 마이크로스피커
KR101475341B1 (ko) * 2013-06-07 2014-12-22 주식회사 이엠텍 슬림형 마이크로스피커
KR101363522B1 (ko) * 2013-09-04 2014-02-14 주식회사 비에스이 마이크로스피커용 전기 브릿지를 갖는 일체형 서스펜션
KR101564896B1 (ko) * 2015-01-17 2015-10-30 주식회사 슬리비스 진동판 조립체
KR101760754B1 (ko) * 2016-08-23 2017-07-25 주식회사 이엠텍 방수 기능 사이드 진동판 및 이를 구비하는 마이크로스피커
TWI702856B (zh) * 2018-08-22 2020-08-21 美律實業股份有限公司 揚聲器
KR102165335B1 (ko) * 2018-12-12 2020-10-14 주식회사 이그잭스 Rfid 태그 및 이의 제조 방법

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KR100419914B1 (ko) * 2003-03-17 2004-02-25 주식회사 진영음향 마이크로 스피커용 진동 모듈 및 이를 구비한 마이크로스피커
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Publication number Publication date
KR20120054868A (ko) 2012-05-31
CN202178854U (zh) 2012-03-28
TW201223298A (en) 2012-06-01
TWI499315B (zh) 2015-09-01
CN102480669A (zh) 2012-05-30
CN102480669B (zh) 2015-08-19
KR101156053B1 (ko) 2012-06-20

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