WO2011083959A2 - Haut-parleur multifonctionnel - Google Patents

Haut-parleur multifonctionnel Download PDF

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Publication number
WO2011083959A2
WO2011083959A2 PCT/KR2011/000046 KR2011000046W WO2011083959A2 WO 2011083959 A2 WO2011083959 A2 WO 2011083959A2 KR 2011000046 W KR2011000046 W KR 2011000046W WO 2011083959 A2 WO2011083959 A2 WO 2011083959A2
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WO
WIPO (PCT)
Prior art keywords
suspension
fixed
elastic body
frame
yoke
Prior art date
Application number
PCT/KR2011/000046
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English (en)
Korean (ko)
Other versions
WO2011083959A3 (fr
Inventor
권철영
이상호
송재경
Original Assignee
주식회사 비에스이
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.)
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Publication date
Application filed by 주식회사 비에스이 filed Critical 주식회사 비에스이
Priority to CN2011800001225A priority Critical patent/CN102273226A/zh
Publication of WO2011083959A2 publication Critical patent/WO2011083959A2/fr
Publication of WO2011083959A3 publication Critical patent/WO2011083959A3/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
    • 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
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/07—Suspension between moving magnetic core and housing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the present invention relates to a multifunctional micro speaker, and more particularly, to a multifunctional micro speaker having an improved structure to absorb and disperse a shock transmitted to a suspension when an external shock is applied to the multifunctional micro speaker.
  • a speaker is a device that converts an electrical signal into a voice signal.
  • Micro-speakers are mainly small speakers for small sized audio equipment such as mobile phones, laptops, MP3 players, earphones, etc., and portable audio equipment that is in great demand in recent years.
  • vibration signal is used as a signal in place of an incoming call signal or as a signal for confirming an input state in a touch screen method of directly inputting information on a screen.
  • the multifunctional micro speaker of the present invention refers to a speaker having not only a basic function of generating sound but also a configuration for generating a vibration signal.
  • the multifunctional micro speaker is variously called a multifunctional actuator or a multifunctional electro-acoustic transducer.
  • the multifunctional micro-speaker of the conventional structure is a structure which acquires a vibration by resonating the vibrating body supported by the plate-shaped spring.
  • a conventional multifunctional micro speaker has a voice coil in a magnetic circuit on the side of a diaphragm, also called a vibration plate, and when a current for a voice signal is applied thereto, a sound is output, and when a current for a vibration signal is applied to the voice coil, the vibrator vibrates Generates.
  • the multi-function micro speaker 100, the frame 110, the sound generating diaphragm 101, the voice coil 102, the first permanent magnet 104, the N pole and the S pole is disposed in the vertical direction,
  • the plate 103, the yoke 105, the 1st suspension 107, the 2nd suspension 108, and the 2nd magnet 109 are comprised.
  • Current is applied to the voice coil 102 through the lead wire (not shown).
  • the upper end of the voice coil 102 is fixed to the lower surface of the diaphragm 101.
  • the voice coil 102 is wound so that a current can flow in a direction perpendicular to the lines of magnetic force.
  • the plate 103 is fixed to the upper surface of the first permanent magnet 104, the first permanent magnet 104 is fixed to the bottom surface of the yoke 105, the yoke 105 to the first suspension 107 It is fixed.
  • the first suspension 107 is elastically supported by the frame 110.
  • the yoke 105, the first permanent magnet 104, and the plate 103 form a magnetic circuit of the speaker.
  • the second suspension 108 is spaced apart below the first suspension 107, the outer circumferential portion thereof is elastically supported by the frame 110, and the second magnet 109 is fixed to the bottom surface of the second suspension 108. do.
  • the multifunctional micro speaker 100 having such a configuration will be described.
  • a current suitable for sound is applied to the voice coil 102 through a lead wire (not shown)
  • an electromagnetic force is generated in the voice coil 102, which causes the diaphragm 101 to vibrate and generate sound output.
  • the magnetic lines of force from the N pole of the first permanent magnet 104 form a magnetic field passing through the plate 103, the voice coil 102, and the yoke 105 in turn to the S pole of the first permanent magnet 104. do.
  • the electromagnetic force is generated in the voice coil 102, it generates a Lorentz force by interacting with the magnetic flux by the magnetic circuit, and the diaphragm 101 fixed to the voice coil 102 is vibrated to output sound It will function as a speaker.
  • FIG. 2 shows a perspective view of a first suspension 107 employed in a conventional multifunction micro speaker.
  • the outer circumferential portion of the first suspension 107 is supported by the frame 110, and a plurality of long holes 107a are formed inside the portion engaged with the frame 110.
  • the long hole 107a smoothly elastically deforms the first suspension 107 in the vertical direction.
  • the portion denoted by reference numeral "A" denotes a portion where deformation easily occurs due to vibration and external shock.
  • a suspension (particularly, the first suspension 107) employed in the conventional multifunctional micro speaker is an essential component for generating vibration in the multifunctional micro speaker.
  • the suspension can increase or decrease the vibration force, and the vibration force and the resonance frequency are determined according to the thickness and various shapes of the suspension. Thin material suspension is adopted to obtain high vibration force and low resonance frequency.
  • suspensions can be sensitive to external shocks because they are continuously vibrated during the operation of the multifunction micro speaker, and as such, they can be said to contain an unstable component to external shocks.
  • the "A" region may be half-shaped and broken, causing fatal damage. Therefore, the manufacture of suspensions that are protected from external shocks is one of the important considerations in the art.
  • the first method is to increase the amount of suspension
  • the second is to increase the thickness of the suspension.
  • the thickness of the suspension is thickened, and thus there is a limit in implementing a large vibration force and a low resonance frequency. Therefore, the conventional methods used to protect the multifunctional micro speaker from external shocks have disadvantages.
  • the present invention has been made in view of the above-described matters, and an object thereof is to provide a multifunctional micro speaker that can absorb and disperse a shock transmitted to a suspension when an external shock is applied to the multifunctional micro speaker.
  • the frame A diaphragm having an outer circumferential portion fixed to the frame; A voice coil fixed to the lower surface of the diaphragm; A first suspension having an outer circumferential portion fixed to the frame and having elasticity and having a plurality of first long holes; A yoke fixed to the first suspension; A first permanent magnet fixed to the inner bottom surface of the yoke; A plate fixed to an upper surface of the first permanent magnet; And a first elastic body coupled to the plurality of first long holes.
  • the first elastic body is preferably formed with a first insertion groove into which the inner peripheral surface of the first long hole is inserted.
  • the first elastic body is preferably rubber.
  • the second suspension is disposed spaced downward from the first suspension, the outer peripheral portion is fixed to the frame, having a resilient, a plurality of second long holes are formed; And a second magnet fixed to the lower surface of the second suspension.
  • the second elastic body is coupled to the second long hole, and the second elastic body is preferably formed with a second insertion groove into which the inner circumferential surface of the second long hole is inserted.
  • Multifunctional micro-speaker since the elastic body coupled to the suspension absorbs and distributes the external shock, it is safe from external shock and extends the service life.
  • FIG. 1 is a schematic cross-sectional view of a conventional multifunctional micro speaker
  • FIG. 2 is a perspective view of the first suspension employed in FIG. 1;
  • FIG. 3 is a schematic cross-sectional view of a multifunctional micro speaker according to an embodiment of the present invention.
  • Figure 4 is a perspective view showing the main portion of Figure 3,
  • FIG. 5 is a cross-sectional view in the engaged state of FIG.
  • FIG. 6 is a view showing an elastic body employed in a multifunctional micro speaker according to another embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of a multifunctional micro speaker according to an exemplary embodiment of the present invention
  • FIG. 4 is a perspective view showing an essential part of FIG. 3
  • FIG. 5 is a cross-sectional view in a coupled state of FIG. 4.
  • the multifunctional micro speaker 200 of the present embodiment is mainly used for a mobile communication terminal such as a mobile phone and a small device such as a PMP, and has a sound generating function and a vibration generating function as a signal at the same time.
  • the multifunction micro speaker 200 includes a frame 10, a diaphragm 20, a voice coil 30, a first suspension 40, a yoke 50, First permanent magnet (60).
  • the plate 70 is configured to include the first elastic body 120.
  • the frame 10 is usually made of plastic, forms the external shape of the speaker, and various components are fixed therein.
  • the frame 10 includes an upper frame 12, a lower frame 13, and a bottom cover member 11.
  • the upper cover member 14 is coupled to the upper portion of the upper frame 12.
  • the frame 10 is generally cylindrical in shape.
  • the contour of the cross section of the frame may be rectangular, elliptical or track-shaped.
  • the internal parts can also be modified as appropriate to their external shape.
  • the outer circumferential portion of the diaphragm 20 is fixed to the upper portion of the upper frame 12.
  • the diaphragm 20 is circular and is usually made of a high molecular compound.
  • the diaphragm 20 vibrates up and down to produce a sound pressure that can be heard by a person.
  • the diaphragm 20 is divided into an inner part located inside and an outer part located outside based on a boundary portion where the upper end of the voice coil 30 is coupled.
  • the inner part and the outer part are each dome-shaped, and the boundary part is flat.
  • the outer part is also called the edge.
  • Various changes are possible in the specific shape, material, and thickness of the diaphragm 20.
  • the voice coil 30 is fixed to the lower surface of the diaphragm 20.
  • the upper end of the voice coil 30 is fixed to the lower surface of the boundary of the diaphragm 20.
  • the voice coil 30 is formed by winding a current to flow in a direction perpendicular to the lines of magnetic force.
  • the voice coil 30 is electrically connected to a terminal (not shown) provided in the frame 10.
  • the voice coil 30 is supplied with current from the outside via a terminal.
  • the lower portion of the voice coil 30 is located in the space between the first permanent magnet 60 and the plate 70 coupled in the vertical direction and the side wall of the yoke 50. This space is called a magnetic gap.
  • a high frequency current for the acoustic signal flows through the voice coil 30, the voice coil 30 moves in the vertical direction due to a mutual relationship with the magnetic field generated by the first permanent magnet 60. As a result, the diaphragm 20 coupled to the voice coil 30 vibrates to generate sound.
  • the first suspension 40 is elastic and its outer circumferential portion is fixed to the frame 10.
  • a plurality of first long holes 41 are formed in the first suspension 40.
  • four first long holes 41 are formed along the edge circumferential direction of the first suspension 40.
  • the number and shape of the first long holes 41 can be variously changed.
  • the suspension may be referred to as an elastic member, a spring or a plate spring.
  • the elasticity refers to the property of changing the volume and shape when an external force is applied to the object and then returning to the shape of Bondi when the force is removed.
  • the elasticity is divided into volume elasticity and shape elasticity according to the type of deformation.
  • the first suspension 40 is mainly related to shape elasticity.
  • the first suspension 40 is in the shape of a plate and has a disc shape so as to correspond to the shape of the frame 10.
  • the first suspension 40 is made of a metal plate such as phosphor bronze. Meanwhile, in another embodiment, the first suspension may be made of a polymer elastic material. Meanwhile, the yoke 50 is fixed to the center portion of the first suspension 40.
  • the yoke 50 is fixed to the upper surface of the first suspension 40 in this embodiment.
  • the first permanent magnet 60 is coupled to the bottom of the yoke 50.
  • At the center of the bottom of the yoke 50 is provided a receiving groove 51 to which the boss portion 42 of the first suspension 40 located below the yoke 50 is coupled.
  • the receiving groove 51 is provided in the boss portion 42 in a shape corresponding to the shape so that the boss portion 42 can be coupled.
  • the receiving groove 51 is also cylindrical to correspond thereto.
  • the size of the diameter of the receiving groove 51 is larger than the size of the outer diameter of the boss portion 42 so that a firm coupling is achieved even if the boss portion 42 is fitted into the receiving groove 51 without any adhesive. It is preferred to be configured slightly larger. The boss portion 42 is inserted into the receiving groove 51 so that mutually accurate position coupling is possible.
  • the boss 42 always maintains a constant position of the yoke 50 with respect to the first suspension 40 even when an external shock is applied to the multifunction micro speaker 200. Therefore, the phenomenon in which the yoke 50 is biased toward one side with respect to the first suspension 40 is prevented. When the yoke 50 is moved to one side, the bottom of the yoke 50 may be caught by the first long hole 41 of the first suspension 40, but the first suspension 40 may be damaged. This problem is prevented in advance.
  • the first permanent magnet 60 is fixed to the inner bottom surface of the yoke 50.
  • the first permanent magnet 60 is fixed to the bottom surface of the yoke 50 by an adhesive or the like so as to be concentric with the yoke 50.
  • the first permanent magnet 60 is formed in the shape of a disc so as to correspond to the shape of the yoke 50.
  • the plate 70 is fixed to an upper surface of the first permanent magnet 60.
  • the plate 70 is made of a material that allows magnetic force to pass through, and has a diameter substantially the same as that of the first permanent magnet 60.
  • the first permanent magnet 60 and the plate 70 are fixed to be spaced apart from the side wall of the yoke 50.
  • a space is formed between the first permanent magnet 60 and the inner surface of the side wall of the yoke 50 that faces the outer surface of the plate 70, and the lower portion of the voice coil 30 is located in the space.
  • the first permanent magnet 60, the plate 70, and the yoke 50 constitute a magnetic circuit of the speaker. That is, the magnetic flux generated in the first permanent magnet 60 generates a magnetic flux path (path) entering the yoke 50 via the plate 70.
  • the first elastic body 120 is provided to protect the multi-function micro speaker 200 from external impact.
  • the first elastic body 120 is an elastic body made of synthetic resin, and rubber is used in this embodiment.
  • the first elastic body 120 is formed with a first insertion groove 121 into which the inner circumferential surface of the first long hole 41 is inserted.
  • the cross section of the first elastic body 120 is generally similar to the shape of the letter “I”, and an inner circumferential surface of the first long hole 41 is inserted into the first insertion groove 121. .
  • the first elastic body 120 When an external shock is applied to the multifunction micro speaker 200, the first elastic body 120 absorbs the external shock to relieve the shock applied to the first suspension 40.
  • the plurality of first elastic bodies 120 coupled to the first suspension 40 since the plurality of first elastic bodies 120 coupled to the first suspension 40 is provided, it provides an effect of effectively dispersing the external impact.
  • the first elastic body 120 is coupled to each of the first long holes 41. That is, the first elastic body 120 is coupled to every four first long holes 41.
  • the number of the first elastic bodies 120 may increase or decrease corresponding to the number of the first long holes 41.
  • the vibration force and the resonance frequency of the first suspension 40 may be adjusted by changing the material and the thickness of the first elastic body 120.
  • the multi-function micro speaker 200 according to the present invention while reducing the thickness of the first suspension 40, The vibration force and the resonance frequency can be adjusted by changing the material or thickness of the first elastic body 120.
  • the first elastic body 120 is injection molded integrally with the first suspension 40 at the time of injection of the first suspension 40 or the first suspension 40 after separately manufacturing the first elastic body 120. It can be combined to fit).
  • the multifunction micro speaker 200 includes a second suspension 80, a second magnet 90, and a second elastic body 130.
  • the second suspension 80 is spaced downward from the first suspension 40 and is made of an elastic material.
  • the outer circumferential portion of the second suspension 80 is fixed to the frame 10, and similarly to the first suspension 40, a plurality of second long holes 81 is formed.
  • four second long holes 81 are formed along the edge circumferential direction of the second suspension 80.
  • the number and shape of the second long hole 81 can be variously changed.
  • the second suspension 80 is made of the same material as the first suspension 40.
  • the materials of the first suspension 40 and the second suspension 80 may not be the same.
  • the second magnet 90 is fixed to the lower surface of the second suspension 80. Thus, the second magnet 90 is spaced apart from the first suspension 40 and the yoke 50.
  • the two magnets 90 may be permanent magnets or electromagnets.
  • the second magnet 90 and the second suspension 80 serve as a vibrator for generating a vibration signal.
  • the vibrator consisting of the second magnet 90 and the second suspension 80 is interconnected by a magnetic circuit and a magnetic field consisting of the first permanent magnet 60, the plate 70, and the yoke 50.
  • the second elastic body 130 is formed to protect the multi-function micro speaker 200 from external impact.
  • the second elastic body 130 is coupled to the second long hole 81 of the second suspension 80.
  • the second elastic body 130 is formed with a second insertion groove 131 into which the inner circumferential surface of the second long hole 81 is inserted.
  • the second elastic body 130 is an elastic body made of synthetic resin, and rubber is used in this embodiment.
  • the second elastic body 130 is also coupled to each of the plurality of second long holes 81 formed in the second suspension 80. Since the specific configuration of the second elastic body 130 is similar to the first elastic body 120, a detailed description thereof will be omitted.
  • the multi-function micro speaker 200 In the multi-function micro speaker 200 according to the present exemplary embodiment, external shocks are absorbed and dispersed by the first and second elastic bodies 120 and 130 coupled to the first suspension 40 and the second suspension 80, so that the multi-function micro speaker 200 ) Is structurally stable and provides an effect of maintaining a good quality of the product. In addition, it provides an effect that can significantly extend the service life of the multi-function micro speaker 200.
  • first and second elastic bodies 120 and 130 may control the vibration force and the resonance frequency of the first and second suspensions 40 and 80 in addition to the function of absorbing and dispersing the external shock.
  • the thickness of the first and second suspensions 40 and 80 may be reduced, and the materials of the first and second elastic bodies 120 and 130 may be used. Or by changing the thickness and the like provides the effect that can give the desired vibration force and resonant frequency.
  • Figure 6 is a view showing an example of the elastic body employed in the multi-function micro-speaker according to another embodiment of the present invention.
  • the same reference numerals are assigned to components that perform the same functions as in FIG. 4, and a detailed description thereof will be omitted.
  • the first suspension 107 employed in the conventional multifunctional micro speaker 100 most easily undergoes elastic deformation in the "A" region.
  • a plurality of long holes formed in the suspension are provided, and since the long holes have a long length, a section overlapping each other is formed when viewed in the radial direction from the center of the suspension. In this overlapping section, elastic deformation easily occurs, and the overlapping section may be sensitive to external shock.
  • the main feature is that the elastic body 120 'is coupled to a region (corresponding to the region "A" in FIG. 2) of the first suspension 40 which is sensitive to external shock.
  • the elastic body 120 ′ is coupled to each of the first long holes 41 of the first suspension 40, but only to a part of the first long holes 41. In this way, even if only a part of the region can be sufficiently protected the area of the first suspension 40 that is sensitive to the external impact, it is possible to obtain an effect similar to that of the entire area of the first long hole 41.
  • the elastic body 120 ′ is coupled to the first suspension 40, but may also be coupled to the second long hole 81 of the second suspension 80 in the same manner. have.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

La présente invention a trait à un haut-parleur multifonctionnel. Le haut-parleur multifonctionnel selon la présente invention comprend : un cadre ; un diaphragme, dont la surface extérieure est fixée sur le cadre ; une bobine acoustique fixée sur la surface inférieure du diaphragme ; une première suspension élastique, dont la surface extérieure est fixée sur le cadre ; une fourche fixée sur la première suspension ; un premier aimant permanent fixé sur la surface inférieure interne de la fourche ; une plaque fixée sur la surface supérieure du premier aimant permanent ; une seconde suspension élastique qui est espacée de la première suspension et située sous cette dernière, et qui est pourvue d'une partie de support, dont une extrémité est fixée sur le cadre, et d'une partie en saillie qui fait saillie à partir de la partie de support vers la première suspension ; et second aimant logé dans la partie en saillie et fixé sur la surface inférieure de la seconde suspension.
PCT/KR2011/000046 2010-01-06 2011-01-05 Haut-parleur multifonctionnel WO2011083959A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011800001225A CN102273226A (zh) 2010-01-06 2011-01-05 多功能微型扬声器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20-2010-0000080 2010-01-06
KR2020100000080U KR200454024Y1 (ko) 2010-01-06 2010-01-06 다기능 마이크로 스피커

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WO2011083959A2 true WO2011083959A2 (fr) 2011-07-14
WO2011083959A3 WO2011083959A3 (fr) 2011-11-03

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KR101872689B1 (ko) 2016-02-18 2018-06-29 주식회사 예일전자 개선된 구조를 포함하는 진동 출력 장치 및 이를 포함하는 휴대 전자 기기
WO2017142333A1 (fr) * 2016-02-18 2017-08-24 주식회사 예일전자 Dispositif de sortie de vibration présentant une structure améliorée et dispositif électronique portable comprenant ledit dispositif de sortie de vibration
CN106954148B (zh) * 2017-03-20 2018-12-14 歌尔股份有限公司 一种发声装置及电子设备
CN109362006A (zh) * 2018-10-18 2019-02-19 宁波桑德伟尔电子科技有限公司 一种具有降低震动幅度的高音驱动头

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JP4486134B2 (ja) * 2008-01-11 2010-06-23 株式会社アイ信 体感音響装置用電気−機械振動変換器
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KR20050044830A (ko) * 2003-11-08 2005-05-13 신광식 1개의 보이스 코일과 1개의 고정코일에 의해 진동이발생되는 골전도형 양방향 마이크로 스피커
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WO2011083959A3 (fr) 2011-11-03
CN102273226A (zh) 2011-12-07

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