WO2020096134A1 - Speaker unit - Google Patents

Speaker unit Download PDF

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Publication number
WO2020096134A1
WO2020096134A1 PCT/KR2018/016648 KR2018016648W WO2020096134A1 WO 2020096134 A1 WO2020096134 A1 WO 2020096134A1 KR 2018016648 W KR2018016648 W KR 2018016648W WO 2020096134 A1 WO2020096134 A1 WO 2020096134A1
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WO
WIPO (PCT)
Prior art keywords
solenoid coil
coupled
armature
vibration
damping member
Prior art date
Application number
PCT/KR2018/016648
Other languages
French (fr)
Korean (ko)
Inventor
이종배
문준혁
Original Assignee
크레신 주식회사
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Publication date
Application filed by 크레신 주식회사 filed Critical 크레신 주식회사
Publication of WO2020096134A1 publication Critical patent/WO2020096134A1/en

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—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
    • 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 speaker unit.
  • the dynamic type speaker (dynamic speaker) is also called a moving coil type and basically consists of a permanent magnet, a central coil, and a vibration plate that vibrates according to the movement of the central coil.
  • the central coil moves by interaction with the magnetic field formed by the permanent magnet.
  • the vibration plate vibrates to generate sound.
  • BA balanced armature
  • the balanced armature speaker generates sound by vibrating the diaphragm through the vibration of the armature, which is a medium that converts electrical energy into kinetic energy.
  • the balanced armature speaker has a high resolution of reproduction sound, so it can reproduce clear and delicate sound, and the amateur's transient response is good, so the reproduction sound is delicate. Especially, it is easy to reproduce high-quality sound in the mid / high range. have. However, there was a problem in that it was difficult to control the pressure inside the case (housing) generated by the vibration of the diaphragm.
  • Korean Patent Registration No. 10-1821579 (hereinafter referred to as 'prior art') has been known.
  • the prior art proposed an amateur speaker unit including a damper to adjust the pressure inside the case.
  • the balanced armature speaker unit realizes a characteristic expressed as a sharp peak in a narrow band as it goes beyond a certain high-pitched tone band, and due to the phenomenon that the variability of unit impedance due to the resonance of the armature is strong, distortion of sound signal reproduction occurs. It was necessary to provide a smoother and more stable sound quality due to the problem of making a very hard and sharp sound.
  • the present invention is to solve the above-described problem, and provides a technique for appropriately controlling distortion of acoustic signal reproduction by reducing impedance variability.
  • Speaker unit for achieving the above object is a solenoid coil that generates a magnetic field by receiving an acoustic signal; A substrate electrically connected to the solenoid coil to apply an acoustic signal; A magnet that forms a fixed magnetic field that interferes with the magnetic field generated by the solenoid coil; An armature vibrating due to an interaction between the magnetic field of the solenoid coil and the fixed magnetic field of the magnet; A vibration plate on one side of which is combined with the armature and vibrates in conjunction with the vibration of the armature;
  • the solenoid coil a casing in which the magnet and the armature are accommodated; and the armature includes a vibration part penetrating the inner side of the solenoid coil and being spaced apart between the magnets and vibrating due to the vibration of the armature; And a fixing part positioned between the solenoid coil and the diaphragm, one end being bent in a direction in which the fixing part is formed; And a connecting portion formed extending from the
  • the damping member may be characterized in that elastic deformation and restoration are possible.
  • the damping member may be disposed between the vibrating part and the solenoid coil, one end coupled to the fixing part, and the other end coupled to the inside of the solenoid coil.
  • the damping member may be disposed between the connection part and the solenoid coil, and one end may be coupled to the connection part and the other end may be coupled to the solenoid coil.
  • the damping member may be disposed between the fixing part and the solenoid coil, one end coupled to the fixing part, and the other end coupled to the outside of the solenoid coil.
  • the damping member may be disposed between the vibration unit and the substrate, and one end may be coupled to the vibration unit and the other end may be coupled to the substrate.
  • the damping member may be disposed between the connection part and the casing, and one end may be coupled to the connection part and the other end may be coupled to the inside of the casing.
  • the speaker unit according to the present invention is provided with a damping member between the armature and the coil, thereby reducing the sudden fluctuation of unintended impedance in a specific band of the high frequency band, thereby flattening the impedance peak of the high frequency band to reduce distortion of sound signal reproduction.
  • a damping member between the armature and the coil, thereby reducing the sudden fluctuation of unintended impedance in a specific band of the high frequency band, thereby flattening the impedance peak of the high frequency band to reduce distortion of sound signal reproduction.
  • FIG. 1 is an exploded perspective view showing components of a speaker unit according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
  • FIG 3 is a rear view of a speaker unit according to an embodiment of the present invention.
  • FIG. 4 is a graph showing an impedance value of sound generated in a speaker unit according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
  • the speaker unit 100 according to an embodiment of the present invention will be described with reference to FIG. 1.
  • the speaker unit 100 includes a solenoid coil 110, a substrate 180, a magnet, an armature 120, a drive rod 130, a diaphragm 160, a casing 170, a damper 190 It includes.
  • the solenoid coil 110 may receive a sound signal from the outside to generate a magnetic field. As the acoustic signal is variable, the direction or intensity of the magnetic field generated by the solenoid coil 110 may also be variable.
  • the substrate 180 is configured to apply an acoustic signal to the solenoid coil 110, as shown in FIG. 1, according to the first embodiment of the present invention, electrically connected to the solenoid coil 110 inside the casing and external It is also electrically connected to so that sound signals can be applied.
  • the substrate 180 is a printed circuit board (PCB) and may be a flexible PCB (FPCB).
  • a substrate hole (not shown) for exposing a portion of the substrate 180 to the casing 170 may be formed through. That is, the inside of the casing 170 is formed to be extended to the outside through a substrate hole (not shown) to be exposed to the outside to receive an external acoustic signal.
  • the magnet 140 is fixed to generate a magnetic field, it may be preferably provided in more than one pair.
  • the rest of the armature 120 may be disposed between the magnets 140 while a part of the armature 120 is disposed inside the solenoid coil 110.
  • the armature 120 vibrates according to the interaction between the magnetic field of the solenoid coil 110 and the magnetic field of the magnet 140, and thus the drive rod 130, which will be described later, also vibrates.
  • the armature 120 specifically includes a vibration part 121, a protrusion part 122, a fixing part 123, and a connection part 124.
  • the vibration part 121 penetrates the inner side of the solenoid coil 110 and is spaced apart between the magnets 140 and is coupled to one side of the drive rod 130. It is a part that transmits vibration to the drive rod 130 while vibrating according to the acoustic signal.
  • the fixing part 123 is formed to extend from the other end of the vibration part 121 and is located between the solenoid coil 110 and the vibration plate 160, and one end is formed while being bent in a direction in which the vibration part 121 is formed. A part of the fixing part 123 is fixed to a coil or the like.
  • the drive rod 130 may be provided integrally with the armature 120 as one side is implemented in a configuration that is vertically coupled to the armature 120.
  • the core 150 may be provided in a configuration that accommodates the magnet 140.
  • the diaphragm 160 is attached to the other side of the drive rod 130 and may generate sound while vibrating as the drive rod 130 vibrates.
  • the diaphragm 160 may be preferably provided in the form of a thin film made of a non-magnetic metal material.
  • the casing 170 is configured to protect each of the above-described components, solenoid coil 110, armature 120, and core 150 are accommodated, and an acoustic hole (not shown) is formed on one side, so that the diaphragm 160 is provided. It plays a role of outputting the generated sound to the outside.
  • the damper 190 is configured to be coupled to a damping hole P formed in a casing to control damping, and the damping hole P has one side of the second casing 170b so that sound can pass therethrough. It is preferably formed on the other side of the casing facing the acoustic hole formed in.
  • the damper 190 can effectively control the internal pressure generated through the vibration of the diaphragm 160 in the casing 170 without additional configuration by the position where the damping hole P is formed.
  • the damping member 111 of the present invention will be described in more detail with reference to FIGS. 1 to 3.
  • the damping member 111 for damping is provided with an edge of the vibration part 121 facing the inside of the solenoid coil 110 to bind the solenoid coil 110 and the armature 120. It may be provided on the side of the solenoid coil 110.
  • the damping member 111 may be bound to a configuration adjacent to the armature 120 while the other end is bound to the armature 120.
  • the damping member 111 is disposed between the vibration unit 121 and the solenoid coil 110, one side can be coupled to the other side of the vibration unit 121 of the armature 120, , As shown in FIG. 5, disposed between the connecting portion 124 and the solenoid coil 110, one side is coupled to the connecting portion 124 and the other end can be coupled to the solenoid coil 110.
  • the damping member 111 is disposed between the vibration unit 121 and the substrate 180, one end of which is coupled to the vibration unit 121 and the other end of the damping member 111 may be coupled to the substrate 180.
  • the damping member 111 is disposed between the connecting portion 123 and the casing 170, one end is coupled to the connecting portion 123 and the other end can be coupled to the inside of the casing.
  • the damping member 111 may be coupled to one end of the armature and the other end to be configured to adjust the vibration of the armature, and may be provided in at least one of the positions described above.
  • an impedance value is a factor that determines sound quality in a corresponding sound band.
  • the impedance value is kept constant in all audible sound ranges, the sound characteristics are stable, so that a comfortable hearing can be provided to the user.
  • the impedance may suddenly rise and fall in a narrow range corresponding to a resonance frequency band of approximately 6K to 7K Hertz, which may provide a sharp and distorted sound to the user.
  • the Q (Quality factor) value of the impedance indicates how much the speaker unit's suspension system can withstand the resonance frequency inside the speaker, and the lower the value, the better the suspension system's ability to brake resonance. .
  • the damping factor is a numerical value related to the ability to brake this Q value, and the higher the damping factor, the better the braking force as a suspension.
  • the damping member 111 increases the damping factor to lower the rapid variability of the impedance as described above, thereby lowering the Q value, thereby reducing sound distortion and providing a soft sound to the user.
  • the damping member 111 may be provided between the armature 120 and the solenoid coil 110, which is a damping member between both components to connect the armature 120 and the solenoid coil 110 ( It may mean that 111) is filled.
  • the damping member 111 is preferably made of a material capable of elastic deformation and restoration. As a result, the ability to brake a sudden change in the vibration width of an amateur on a specific resonance frequency in a high-frequency band is further improved. That is, when the armature or the solenoid coil or the like has a rapidly changing movement, the damping member 111 made of the above material can hold the upper movement by the elastic force of the damping member 111. In the damping factor, which can lower the fluctuation of the impedance, the excellent suspension role can be further improved.
  • the damping member 111 since the damping member 111 according to an embodiment of the present invention has elastic force, the above-described braking ability can be exerted in the low-end range where the drop of vibration width change, such as an armature, to which the damping member 111 is deformed is not large. Since the damping member 111 does not significantly affect the normal movement of an amateur or the like, it is possible to prevent unintended separate sound quality distortion.
  • the damping member 111 absorbs the shock of an amateur 120, etc., which can be applied when the product to which the present invention speaker unit is applied receives an external shock, thereby preventing additional deformation. It can also serve as a shock absorbing member.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The present invention relates to a speaker unit. The objective of the present invention is to provide a technique for appropriately controlling a distortion phenomenon of sound signal reproduction by reducing a variation in impedance. A damping member is provided between an armature and a coil to reduce sudden variations of unintended impedance in a particular high-frequency band, thereby relatively flattening an impedance peak of a high-frequency band and thus appropriately controlling the distortion phenomenon of sound signal reproduction, such that clean and fresh sound can be reproduced in a high-frequency band. When the speaker unit receives an external impact, the damping member can absorb the impact, thereby preventing deformation of the armature.

Description

스피커 유닛Speaker unit
본 발명은 스피커 유닛에 관한 것이다.The present invention relates to a speaker unit.
최근에는, 정보통신기술 및 전자장치 등의 기술이 발달함에 따라 화상통화 및 음성통화가 가능하고, 오디오 기능 및 카메라 기능 등이 포함된 스마트폰과 같은 이동통신 단말기의 사용이 보편화되었다. 이에 따라 다양한 이어폰 장치들에 쓰이는 스피커에 관한 기술들이 개발되었다.Recently, with the development of information communication technology and electronic device technology, video calls and voice calls are possible, and the use of mobile communication terminals such as smartphones including audio functions and camera functions has become common. Accordingly, technologies related to speakers used in various earphone devices have been developed.
이러한 스피커는 크게 다이나믹(dynamic)방식과 아마추어(armature)방식의 스피커로 분류할 수 있다. 다이나믹 방식의 스피커(다이나믹 스피커)는 무빙코일(moving coil) 타입이라고도 하며, 기본적으로 영구자석, 중앙코일 및 중앙코일의 움직임에 따라 진동하는 진동판으로 이루어져 있다. 중앙코일에 전류가 흐르면 영구자석에 의해 형성된 자기장과의 상호작용에 의하여 중앙코일이 움직이게 되며, 이때 중앙코일이 움직임에 따라 진동판이 진동하게 되어 소리를 발생시킨다.These speakers can be broadly classified into dynamic and armature speakers. The dynamic type speaker (dynamic speaker) is also called a moving coil type and basically consists of a permanent magnet, a central coil, and a vibration plate that vibrates according to the movement of the central coil. When an electric current flows through the central coil, the central coil moves by interaction with the magnetic field formed by the permanent magnet. At this time, as the central coil moves, the vibration plate vibrates to generate sound.
하지만, 다이나믹 스피커는 소형화시키는데 한계가 있기 때문에 최근에는 커널형 이어폰용 스피커로써 소형화시키기 편리한 아마추어 방식의 밸런스드 아마추어(Balanced Armature, BA) 스피커를 적용하기 위한 시도들이 있다. 밸런스드 아마추어 스피커는 전기적 에너지를 운동 에너지로 변환시켜주는 매개체에 해당되는 접극자 즉, 아마추어의 진동을 통해 진동판을 진동시킴으로써 소리를 발생시킨다.However, dynamic speakers have limitations in miniaturization. Recently, attempts have been made to apply balanced armature (BA) speakers, which are convenient for miniaturization, as kernel-type earphone speakers. The balanced armature speaker generates sound by vibrating the diaphragm through the vibration of the armature, which is a medium that converts electrical energy into kinetic energy.
밸런스드 아마추어 스피커는 재생 음향의 해상도가 높아 명료하고 섬세한 소리를 재현할 수 있으며, 아마추어의 과도응답성이 양호하여 재생 음향이 섬세하고, 특히 중/고음 영역에서의 고품질의 음향 재현이 용이한 장점이 있다. 다만 진동판의 진동에 의해 발생되는 케이스(하우징) 내부의 압력을 조절하기 힘든 문제점이 있었다The balanced armature speaker has a high resolution of reproduction sound, so it can reproduce clear and delicate sound, and the amateur's transient response is good, so the reproduction sound is delicate. Especially, it is easy to reproduce high-quality sound in the mid / high range. have. However, there was a problem in that it was difficult to control the pressure inside the case (housing) generated by the vibration of the diaphragm.
이와 관련하여, 대한민국 등록특허공보 제10-1821579호(이하, '종래기술'이라 함) 등이 공지되었다. 종래기술은 댐퍼를 포함한 아마추어 스피커 유닛을 제시하여 케이스 내부 압력을 조절하였다.In this regard, Korean Patent Registration No. 10-1821579 (hereinafter referred to as 'prior art') has been known. The prior art proposed an amateur speaker unit including a damper to adjust the pressure inside the case.
최근 소형 이어폰에서도 고음역대에서 섬세한 음향 재현을 요구하는 소비 트랜드에 따라 밸런스드 아마추어 스피커 유닛이 적용된 제품이 다양해 지고 있다. 다만 밸런스드 아마추어 스피커 유닛은 특정 고음역대를 넘어감에 따라 좁은 대역에서 날카로운 피크로 표현되는 특성이 구현되며, 아마추어의 공진에 의한 유니트 임피던스의 변동성이 강하게 나타나는 현상으로 인해 음향 신호 재현의 왜곡 현상이 발생하여 상당히 경질적이고 날카로운 소리를 내는 문제가 있어 보다 평탄하고 안정적인 음질을 제공할 필요가 있었다.Recently, even in small earphones, products with balanced amateur speaker units have been diversified according to consumption trends that require delicate sound reproduction in the high range. However, the balanced armature speaker unit realizes a characteristic expressed as a sharp peak in a narrow band as it goes beyond a certain high-pitched tone band, and due to the phenomenon that the variability of unit impedance due to the resonance of the armature is strong, distortion of sound signal reproduction occurs. It was necessary to provide a smoother and more stable sound quality due to the problem of making a very hard and sharp sound.
본 발명은 상술한 문제점을 해결하기 위한 것으로 임피던스의 변동성을 줄여 음향 신호 재현의 왜곡 현상을 적절하게 제어하는 기술을 제공한다.The present invention is to solve the above-described problem, and provides a technique for appropriately controlling distortion of acoustic signal reproduction by reducing impedance variability.
위와 같은 목적을 달성하기 위한 본 발명에 따른 스피커 유닛은 음향신호를 인가 받아 자기장을 발생시키는 솔레노이드 코일; 상기 솔레노이드 코일과 전기적으로 연결되어 음향신호를 인가하는 기판; 상기 솔레노이드 코일에서 발생한 자기장과 간섭되는 고정 자기장을 형성하는 자석; 상기 솔레노이드 코일의 자기장과 상기 자석의 고정 자기장이 간섭하는 상호작용으로 인해 진동하는 아마추어; 일측이 상기 아마추어와 결합되며 상기 아마추어의 진동과 연동하여 진동하는 진동판; 상기 솔레노이드 코일, 자석 및 아마추어가 수납되는 케이싱;을 포함하며 상기 아마추어는, 상기 솔레노이드 코일의 내측을 관통하여 상기 자석 사이에 이격된 채 배치되며 상기 아마추어의 진동으로 진동하는 진동부; 및 상기 솔레노이드 코일과 진동판 사이에 위치하며, 일단이 상기 고정부가 형성된 방향으로 절곡되어 형성된 고정부; 및 상기 진동부의 타단으로부터 연장 형성되어 상기 진동부와 고정부를 연결하도록 수직방향으로 형성된 연결부;를 포함하고, 상기 아마추어의 진동을 조절하는 댐핑 부재가 마련되는 것을 특징으로 한다.Speaker unit according to the present invention for achieving the above object is a solenoid coil that generates a magnetic field by receiving an acoustic signal; A substrate electrically connected to the solenoid coil to apply an acoustic signal; A magnet that forms a fixed magnetic field that interferes with the magnetic field generated by the solenoid coil; An armature vibrating due to an interaction between the magnetic field of the solenoid coil and the fixed magnetic field of the magnet; A vibration plate on one side of which is combined with the armature and vibrates in conjunction with the vibration of the armature; The solenoid coil, a casing in which the magnet and the armature are accommodated; and the armature includes a vibration part penetrating the inner side of the solenoid coil and being spaced apart between the magnets and vibrating due to the vibration of the armature; And a fixing part positioned between the solenoid coil and the diaphragm, one end being bent in a direction in which the fixing part is formed; And a connecting portion formed extending from the other end of the vibrating portion and vertically connected to connect the vibrating portion and the fixing portion, wherein a damping member for controlling vibration of the armature is provided.
상기 댐핑 부재는 탄성 변형 및 복원이 가능한 것을 특징으로 할 수 있다.The damping member may be characterized in that elastic deformation and restoration are possible.
상기 댐핑 부재는 상기 진동부와 상기 솔레노이드 코일 사이에 배치되며 일단이 상기 고정부에 결합되고 타단이 상기 솔레노이드 코일 내측에 결합되는 것을 특징으로 할 수 있다.The damping member may be disposed between the vibrating part and the solenoid coil, one end coupled to the fixing part, and the other end coupled to the inside of the solenoid coil.
상기 댐핑 부재는 상기 연결부와 상기 솔레노이드 코일 사이에 배치되며 일단이 상기 연결부에 결합되고 타단이 상기 솔레노이드 코일에 결합되는 것을 특징으로 할 수 있다.The damping member may be disposed between the connection part and the solenoid coil, and one end may be coupled to the connection part and the other end may be coupled to the solenoid coil.
상기 댐핑 부재는 상기 고정부와 상기 솔레노이드 코일 사이에 배치되며 일단이 상기 고정부에 결합되고 타단이 상기 솔레노이드 코일 외측에 결합되는 것을 특징으로 할 수 있다.The damping member may be disposed between the fixing part and the solenoid coil, one end coupled to the fixing part, and the other end coupled to the outside of the solenoid coil.
상기 댐핑 부재는 상기 진동부와 상기 기판 사이에 배치되며 일단이 상기 진동부에 결합되고 타단이 상기 기판에 결합되는 것을 특징으로 할 수 있다.The damping member may be disposed between the vibration unit and the substrate, and one end may be coupled to the vibration unit and the other end may be coupled to the substrate.
상기 댐핑 부재는 상기 연결부와 상기 케이싱 사이에 배치되며 일단이 상기 연결부에 결합되고 타단이 상기 케이싱 내측에 결합되는 것을 특징으로 할 수 있다.The damping member may be disposed between the connection part and the casing, and one end may be coupled to the connection part and the other end may be coupled to the inside of the casing.
본 발명에 따른 스피커 유닛은 아마추어와 코일을 사이에 댐핑 부재를 마련하여 고음역대의 특정 대역에서 의도하지 않은 임피던스의 급격한 변동성을 감소시킴으로서 고음역대의 임피던스 피크를 상대적으로 평탄하게 하여 음향 신호 재현의 왜곡 현상을 적절히 제어함으로써, 고음역대에서 깔끔하고 시원한 음향 재현을 제공할 수 있다. 또한, 스피커 유닛이 외부 충격을 받았을 때 충격을 흡수하여 아마추어 등의 변형을 방지할 수 있도록 할 수 있다.The speaker unit according to the present invention is provided with a damping member between the armature and the coil, thereby reducing the sudden fluctuation of unintended impedance in a specific band of the high frequency band, thereby flattening the impedance peak of the high frequency band to reduce distortion of sound signal reproduction. By properly controlling, it is possible to provide a clean and cool sound reproduction in a high-frequency range. In addition, when the speaker unit receives an external shock, it is possible to absorb the shock to prevent deformation such as an amateur.
도 1은 본 발명의 실시예에 따른 스피커 유닛의 구성요소를 도시한 분해사시도이다.1 is an exploded perspective view showing components of a speaker unit according to an embodiment of the present invention.
도 2는 본 발명의 실시예에 따른 스피커 유닛의 단면도이다.2 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
도 3은 본 발명의 실시예에 따른 스피커 유닛의 후면도이다.3 is a rear view of a speaker unit according to an embodiment of the present invention.
도 4는 본 발명의 실시예에 따른 스피커 유닛에서 발생하는 음향의 임피던스 값을 나타낸 그래프이다.4 is a graph showing an impedance value of sound generated in a speaker unit according to an embodiment of the present invention.
도 5는 본 발명의 실시예에 따른 스피커 유닛의 단면도이다.5 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
도 6는 본 발명의 실시예에 따른 스피커 유닛의 단면도이다.6 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
도 7는 본 발명의 실시예에 따른 스피커 유닛의 단면도이다.7 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
도 8는 본 발명의 실시예에 따른 스피커 유닛의 단면도이다.8 is a cross-sectional view of a speaker unit according to an embodiment of the present invention.
본 발명의 바람직한 실시예에 대하여 더 구체적으로 설명하되, 이미 주지되어진 기술적 부분에 대해서는 설명의 간결함을 위해 생략하거나 압축하기로 한다.The preferred embodiments of the present invention will be described in more detail, but the technical parts that have already been well-known will be omitted or compressed for the sake of brevity.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예에 대해 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<스피커 유닛에 대한 설명><Description of the speaker unit>
도 1을 참고하여 본 발명의 일 실시예인 스피커 유닛(100)에 대해 설명한다.The speaker unit 100 according to an embodiment of the present invention will be described with reference to FIG. 1.
본 발명의 일 실시예인 스피커 유닛(100)은 솔레노이드 코일(110), 기판(180), 자석, 아마추어(120), 드라이브 로드(130), 진동판(160), 케이싱(170), 댐퍼(190)를 포함한다.The speaker unit 100 according to an embodiment of the present invention includes a solenoid coil 110, a substrate 180, a magnet, an armature 120, a drive rod 130, a diaphragm 160, a casing 170, a damper 190 It includes.
솔레노이드 코일(110)은 외부에서 음향신호를 받아 자기장을 발생시킬 수 있다. 음향신호가 가변적임에 따라 솔레노이드 코일(110)에서 발생하는 자기장의 방향 내지 세기도 가변적일 수 있다.The solenoid coil 110 may receive a sound signal from the outside to generate a magnetic field. As the acoustic signal is variable, the direction or intensity of the magnetic field generated by the solenoid coil 110 may also be variable.
기판(180)은 솔레노이드 코일(110)에 음향신호를 인가하기 위한 구성으로 도1에 도시된 바와 같이 본 발명의 제1 실시예에 따르면 케이싱의 내부에서 솔레노이드 코일(110)과 전기적으로 연결되며 외부와도 전기적으로 연결되어 음향 신호를 인가받을 수 있도록 연결되어 있다. 기판(180)은 PCB(Printed circuit board)로 연성 PCB(FPCB) 일 수 있다.The substrate 180 is configured to apply an acoustic signal to the solenoid coil 110, as shown in FIG. 1, according to the first embodiment of the present invention, electrically connected to the solenoid coil 110 inside the casing and external It is also electrically connected to so that sound signals can be applied. The substrate 180 is a printed circuit board (PCB) and may be a flexible PCB (FPCB).
케이싱(170)에는 기판(180)의 일부를 외부로 노출하기 위한 기판구멍(미도시)이 관통 형성될 수 있다. 즉, 케이싱(170)의 내부로부터 기판구멍(미도시)을 통해 외부로 연장 형성되어 외부 음향 신호를 인가받기 위해 외부에 노출될 수 있다.A substrate hole (not shown) for exposing a portion of the substrate 180 to the casing 170 may be formed through. That is, the inside of the casing 170 is formed to be extended to the outside through a substrate hole (not shown) to be exposed to the outside to receive an external acoustic signal.
자석(140)은 고정적으로 자기장을 발생시키며 바람직하게는 1쌍 이상으로 마련될 수 있다.The magnet 140 is fixed to generate a magnetic field, it may be preferably provided in more than one pair.
도 2 내지 도 3에서 보이는 바와 같이 아마추어(120)는 그 일부가 솔레노이트 코일(110)의 내측에 배치되면서 자석(140) 사이에 나머지 일부가 배치될 수 있다. 아마추어(120)는 솔레노이드 코일(110)의 자기장과 자석(140)의 자기장이 간섭하는 상호작용에 따라 진동하며 이에 따라 후술하는 드라이브 로드(130)도 진동하게 된다.As shown in FIGS. 2 to 3, the rest of the armature 120 may be disposed between the magnets 140 while a part of the armature 120 is disposed inside the solenoid coil 110. The armature 120 vibrates according to the interaction between the magnetic field of the solenoid coil 110 and the magnetic field of the magnet 140, and thus the drive rod 130, which will be described later, also vibrates.
본 발명의 일 실시예에 따른 아마추어(120)는 구체적으로 진동부(121), 돌출부(122), 고정부(123), 연결부(124)을 포함한다.The armature 120 according to an embodiment of the present invention specifically includes a vibration part 121, a protrusion part 122, a fixing part 123, and a connection part 124.
진동부(121)는 솔레노이드 코일(110)의 내측을 관통하여 자석(140)사이에 이격된채 배치되고 드라이브 로드(130)의 일측과 결합된다. 음향 신호에 따라 진동하면서 드라이브 로드(130)에 진동을 전달하는 부분이다.The vibration part 121 penetrates the inner side of the solenoid coil 110 and is spaced apart between the magnets 140 and is coupled to one side of the drive rod 130. It is a part that transmits vibration to the drive rod 130 while vibrating according to the acoustic signal.
고정부(123)는 진동부(121)의 타단으로부터 연장 형성되어 솔레노이드 코일(110)과 진동판(160) 사이에 위치하며, 일단이 진동부(121)가 형성된 방향으로 절곡된 채 형성되어 있다. 고정부(123)는 코일 등에 일부분이 고정되어 있다.The fixing part 123 is formed to extend from the other end of the vibration part 121 and is located between the solenoid coil 110 and the vibration plate 160, and one end is formed while being bent in a direction in which the vibration part 121 is formed. A part of the fixing part 123 is fixed to a coil or the like.
드라이브 로드(130)는 일측이 아마추어(120)와 수직으로 결합되는 구성으로 실시하기에 따라 아마추어(120)와 일체로 마련될 수 있다.The drive rod 130 may be provided integrally with the armature 120 as one side is implemented in a configuration that is vertically coupled to the armature 120.
코어(150)는 자석(140)을 수용하는 구성으로 마련 될 수 있다. The core 150 may be provided in a configuration that accommodates the magnet 140.
진동판(160)은 드라이브 로드(130) 타측이 부착되어 드라이브 로드(130)가 진동함에 따라 진동하면서 소리를 발생시킬 수 있다. 진동판(160)은 바람직하게는 비자성체인 금속 재질의 박막형태로 마련될 수 있다.The diaphragm 160 is attached to the other side of the drive rod 130 and may generate sound while vibrating as the drive rod 130 vibrates. The diaphragm 160 may be preferably provided in the form of a thin film made of a non-magnetic metal material.
케이싱(170)은 상술한 각 구성을 보호하기 위한 구성으로 솔레노이드 코일(110), 아마추어(120) 및 코어(150)가 수납되며 일 측면에 음향구멍(미도시)이 형성되어 진동판(160)에서 발생한 음향을 외부로 출력시키는 역할을 한다.The casing 170 is configured to protect each of the above-described components, solenoid coil 110, armature 120, and core 150 are accommodated, and an acoustic hole (not shown) is formed on one side, so that the diaphragm 160 is provided. It plays a role of outputting the generated sound to the outside.
도 1에서 보이는 바와 같이 댐퍼(190)는 댐핑을 조절하기 위해 케이싱에 형성된 댐핑구멍(P)에 결합되는 구성으로 댐핑구멍(P)은 음향이 통과될 수 있도록 제2케이싱(170b)의 일 측면에 형성되어 있는 음향구멍과 대향되는 케이싱의 타 측면에 형성되는 것이 바람직하다. As shown in FIG. 1, the damper 190 is configured to be coupled to a damping hole P formed in a casing to control damping, and the damping hole P has one side of the second casing 170b so that sound can pass therethrough. It is preferably formed on the other side of the casing facing the acoustic hole formed in.
따라서 댐퍼(190)는 댐핑구멍(P)이 형성된 위치에 의해 별도로 추가되는 구성이 없이 케이싱(170) 내에서 진동판(160)의 진동을 통해 발생하는 내부 압력을 효과적으로 조절할 수 있다. Therefore, the damper 190 can effectively control the internal pressure generated through the vibration of the diaphragm 160 in the casing 170 without additional configuration by the position where the damping hole P is formed.
<본 발명의 댐핑 부재(111)에 대한 설명><Description of the damping member 111 of the present invention>
도 1 내지 도 3을 참고하여 본 발명의 댐핑 부재(111)에 대해 더욱 상세히 설명한다.The damping member 111 of the present invention will be described in more detail with reference to FIGS. 1 to 3.
도 2 및 도 3에서 보이는 바와 같이 댐핑을 위한 댐핑 부재(111)는 솔레노이드 코일(110)과 아마추어(120)를 결속시키도록 솔레노이드 코일(110)의 내측과 마주하는 진동부(121)의 가장자리와 솔레노이드 코일(110)의 측면에 마련될 수 있다.2 and 3, the damping member 111 for damping is provided with an edge of the vibration part 121 facing the inside of the solenoid coil 110 to bind the solenoid coil 110 and the armature 120. It may be provided on the side of the solenoid coil 110.
다만, 도 5 내지 8에서 보이는 바와 같이 이러한 댐핑부재(111)는 일단이 아마추어(120)와 결속된 채 타단은 아마추어(120)와 인접한 구성과 결속되어질 수 있다. 예를들어, 도 2에서 보이는 바와 같이 댐핑부재(111)는 진동부(121)와 솔레노이드 코일(110) 사이에 배치되고 일측이 아마추어(120)의 진동부(121)에 타측이 결합될 수 있고, 도 5에서 보이는 바와 같이 연결부(124)와 솔레노이트 코일(110) 사이에 배치되고 일측이 연결부(124)에 결합되고 타단이 솔레노이드 코일(110)에 결합될 수 있다. However, as shown in FIGS. 5 to 8, the damping member 111 may be bound to a configuration adjacent to the armature 120 while the other end is bound to the armature 120. For example, as shown in Figure 2, the damping member 111 is disposed between the vibration unit 121 and the solenoid coil 110, one side can be coupled to the other side of the vibration unit 121 of the armature 120, , As shown in FIG. 5, disposed between the connecting portion 124 and the solenoid coil 110, one side is coupled to the connecting portion 124 and the other end can be coupled to the solenoid coil 110.
또한, 도 6에서 보이는 바와 같이 고정부(123)와 솔레노이드 코일(110) 사이에 배치되며 일단이 고정부(123)에 결합되고 타단이 솔레노이드 코일 외측에 결합될 수 있다. 도 7에서 보이는 바와 같이 댐핑부재(111)는 진동부(121)와 기판(180) 사이에 배치되며 일단이 진동부(121)에 결합되고 타단이 기판(180)에 결합될 수도 있다. 그리고 도 8과 같이 댐핑부재(111)는 연결부(123)와 케이싱(170) 사이에 배치되며 일단이 연결부(123)에 결합되고 타단이 케이싱 내측에 결합될 수 있다. In addition, as shown in Figure 6 is disposed between the fixing portion 123 and the solenoid coil 110, one end is coupled to the fixing portion 123 and the other end can be coupled to the outside of the solenoid coil. As shown in FIG. 7, the damping member 111 is disposed between the vibration unit 121 and the substrate 180, one end of which is coupled to the vibration unit 121 and the other end of the damping member 111 may be coupled to the substrate 180. And, as shown in Figure 8, the damping member 111 is disposed between the connecting portion 123 and the casing 170, one end is coupled to the connecting portion 123 and the other end can be coupled to the inside of the casing.
상술한 예시 외에도 댐핑부재(111)는 아마추어의 진동을 조절할 수 있도록 아마추어와 일단이 결합되고 다른 구성에 타단이 결합 될 수 있으며 상술한 위치들에 적어도 하나 이상 마련되어질 수 있다.In addition to the above-described example, the damping member 111 may be coupled to one end of the armature and the other end to be configured to adjust the vibration of the armature, and may be provided in at least one of the positions described above.
일반적으로 스피커가 제공하는 음향의 재현에 있어 임피던스값은 해당 음역대에서의 소리 품질을 결정하는 요소이다. 임피던스값은 모든 가청 음역대에서 일정하게 유지될수록 소리 특성이 안정적이므로 사용자에게 편안한 청감을 제공할 수 있다. In general, in reproducing the sound provided by a speaker, an impedance value is a factor that determines sound quality in a corresponding sound band. As the impedance value is kept constant in all audible sound ranges, the sound characteristics are stable, so that a comfortable hearing can be provided to the user.
그러나 밸런스드 아마추어 스피커 유닛에서 점진적으로 약 6K 내지 7K 헤르츠의 공진 주파수 대역에 해당하는 좁은 음역대에서 순간적으로 임피던스가 급격히 상승하고 하강하는 현상이 나타날 수 있고 이는 사용자에게 날카롭고 왜곡된 음향을 제공하게 한다. However, in the balanced armature speaker unit, the impedance may suddenly rise and fall in a narrow range corresponding to a resonance frequency band of approximately 6K to 7K Hertz, which may provide a sharp and distorted sound to the user.
임피던스의Q(Quality factor)값은 스피커 유닛의 서스펜션 시스템(suspension system)이 스피커 내부의 공명주파수를 어느 정도 견뎌낼 수 있는지 알려주는 값으로 낮을 수록 서스펜션 시스템이 공진을 제동하는 능력이 뛰어남을 의미한다. 댐핑 팩터(Damping factor)는 이러한 Q값을 제동하는 능력에 관한 수치로 높을 수록 서스펜션으로써 제동력이 우수함을 의미한다. The Q (Quality factor) value of the impedance indicates how much the speaker unit's suspension system can withstand the resonance frequency inside the speaker, and the lower the value, the better the suspension system's ability to brake resonance. . The damping factor is a numerical value related to the ability to brake this Q value, and the higher the damping factor, the better the braking force as a suspension.
예를 들어, 도 4의 그래프를 보면 댐핑 부재(111)가 없는 경우에 약 2.5K 헤르츠 전후와 약 6K 헤르츠 전후에서 급격한 임피던스의 상승 및 하강에 따른 변동 폭이 크게 존재하였으나, 댐핑 부재(111)가 존재할 때는 그러한 변동폭이 완화된 것을 확인할 수 있다. 즉, 댐핑 부재(111)는 상술한 바와 같은 임피던스의 급격한 변동성을 낮추도록 댐핑 팩터를 높여 Q값을 낮춤으로써 음향 왜곡 현상을 감소시키고 사용자에게 부드러운 음향을 제공할 수 있도록 한다. For example, looking at the graph of FIG. 4, in the absence of the damping member 111, there was a large variation in width due to the rapid rise and fall of the impedance at about 2.5K hertz and about 6K hertz. It can be confirmed that such fluctuations were alleviated when existed. That is, the damping member 111 increases the damping factor to lower the rapid variability of the impedance as described above, thereby lowering the Q value, thereby reducing sound distortion and providing a soft sound to the user.
구체적으로 상술한 바와 같이 댐핑 부재(111)는 아마추어(120)와 솔레노이드 코일(110)의 사이에 마련될 수 있는데 이는 아마추어(120)와 솔레노이드 코일(110)을 연결하도록 양 구성 사이에 댐핑 부재(111)가 메워져 마련됨을 의미할 수 있다.Specifically, as described above, the damping member 111 may be provided between the armature 120 and the solenoid coil 110, which is a damping member between both components to connect the armature 120 and the solenoid coil 110 ( It may mean that 111) is filled.
본 발명의 일 실시예에 따른 댐핑 부재(111)는 탄성 변형 및 복원이 가능한 소재로 마련됨이 바람직하다. 이에 따라 고음역대의 특정 공명주파수상에서 아마추어의 급격한 진동폭의 변화를 제동하는 능력이 더욱 향상된다. 즉, 아마추어 내지 솔레노이드 코일 등이 급변하는 움직임을 가질 때 댐핑 부재(111)의 탄성력에 의해 위 움직임을 잡아줄 수 있으므로 위와 같은 소재로 마련된 댐핑 부재(111)는 날카로운 소리가 날 수 있는 특정 고음 음역대에서 임피던스의 변동폭을 낮추어 줄 수 있는 댐핑팩터가 우수한 서스펜션 역할을 더욱 우수하게 할 수 있다.The damping member 111 according to an embodiment of the present invention is preferably made of a material capable of elastic deformation and restoration. As a result, the ability to brake a sudden change in the vibration width of an amateur on a specific resonance frequency in a high-frequency band is further improved. That is, when the armature or the solenoid coil or the like has a rapidly changing movement, the damping member 111 made of the above material can hold the upper movement by the elastic force of the damping member 111. In the damping factor, which can lower the fluctuation of the impedance, the excellent suspension role can be further improved.
또한, 본 발명의 일 실시예에 따른 댐핑 부재(111)는 탄성력이 있으므로 댐핑 부재(111)가 변형될 정도의 아마추어 등의 진동폭 변화의 낙차가 크지 않은 저음역대에서는 상술한 제동 능력이 발휘될 수 없으므로 댐핑 부재(111)에 의해 아마추어 등의 정상적인 움직임에 큰 영향을 미치지 않도록 하여 의도하지 않은 별도의 음질 왜곡도 방지할 수 있다.In addition, since the damping member 111 according to an embodiment of the present invention has elastic force, the above-described braking ability can be exerted in the low-end range where the drop of vibration width change, such as an armature, to which the damping member 111 is deformed is not large. Since the damping member 111 does not significantly affect the normal movement of an amateur or the like, it is possible to prevent unintended separate sound quality distortion.
추가로, 본 발명의 일 실시예에 따른 댐핑 부재(111)는 본 발명인 스피커 유닛이 적용된 제품이 외부 충격을 받았을 때 가해질 수 있는 아마추어(120) 등의 충격을 흡수하여 별도의 변형을 방지할 수 있는 충격흡수부재의 역할도 수행할 수 있다.In addition, the damping member 111 according to an embodiment of the present invention absorbs the shock of an amateur 120, etc., which can be applied when the product to which the present invention speaker unit is applied receives an external shock, thereby preventing additional deformation. It can also serve as a shock absorbing member.
상술한 바와 같이, 본 발명에 대한 구체적인 설명은 실시예에 의해 이루어졌지만, 상술한 실시예는 본 발명의 바람직한 예를 들어 설명하였을 뿐이기 때문에, 본 발명이 상기의 실시예에만 국한되는 것으로 이해되어서는 아니 되며, 본 발명의 권리범위는 후술하는 청구범위 및 그 등가개념으로 이해되어야 할 것이다.As described above, although the detailed description of the present invention has been made by examples, it is understood that the present invention is limited only to the above-described embodiments, since the above-described embodiments are merely described as preferred examples of the present invention. It should be understood that the scope of the present invention is to be understood by the following claims and equivalent concepts.
<부호의 설명><Description of code>
100 : 스피커 유닛100: speaker unit
110 : 솔레노이드 코일110: solenoid coil
111 : 댐핑 부재111: damping member
120 : 아마추어120: amateur
121 : 진동부121: vibrating unit
122 : 돌출부122: protrusion
123 : 고정부123: fixing part
124 : 연결부124: connection
130 : 드라이브 로드130: drive load
140 : 자석140: magnet
150 : 코어150: core
160 : 진동판160: diaphragm
170 : 케이싱170: casing
170a : 제1케이싱170a: first casing
T : 개방구멍T: Open hole
P : 댐핑구멍P: Damping hole
170b: 제2케이싱170b: second casing
180 : 기판180: substrate
190 : 댐퍼190: damper

Claims (7)

  1. 음향신호를 인가 받아 자기장을 발생시키는 솔레노이드 코일;A solenoid coil that generates an magnetic field by receiving an acoustic signal;
    상기 솔레노이드 코일과 전기적으로 연결되어 음향신호를 인가하는 기판;A substrate electrically connected to the solenoid coil to apply an acoustic signal;
    상기 솔레노이드 코일에서 발생한 자기장과 간섭되는 고정 자기장을 형성하는 자석;A magnet that forms a fixed magnetic field that interferes with the magnetic field generated by the solenoid coil;
    상기 솔레노이드 코일의 자기장과 상기 자석의 고정 자기장이 간섭하는 상호작용으로 인해 진동하는 아마추어;An armature vibrating due to an interaction between the magnetic field of the solenoid coil and the fixed magnetic field of the magnet;
    일측이 상기 아마추어와 결합되며 상기 아마추어의 진동과 연동하여 진동하는 진동판;A vibration plate on one side of which is combined with the armature and vibrates in conjunction with the vibration of the armature;
    상기 솔레노이드 코일, 자석 및 아마추어가 수납되는 케이싱;을 포함하며It includes; the solenoid coil, a casing in which the magnet and the armature is accommodated; and
    상기 아마추어는,The amateur,
    상기 솔레노이드 코일의 내측을 관통하여 상기 자석 사이에 이격된 채 배치되며 상기 아마추어의 진동으로 진동하는 진동부; 및A vibration unit penetrating the inner side of the solenoid coil and being spaced apart between the magnets and vibrating by the vibration of the armature; And
    상기 솔레노이드 코일과 진동판 사이에 위치하며, 일단이 상기 고정부가 형성된 방향으로 절곡되어 형성된 고정부; 및A fixing part positioned between the solenoid coil and the diaphragm, one end being bent in a direction in which the fixing part is formed; And
    상기 진동부의 타단으로부터 연장 형성되어 상기 진동부와 고정부를 연결하도록 수직방향으로 형성된 연결부;를 포함하고,Includes; extending from the other end of the vibration portion formed in a vertical direction to connect the vibration portion and the fixing portion;
    상기 아마추어의 진동을 조절하는 댐핑 부재가 마련되는 것을 특징으로 하는Characterized in that the damping member for adjusting the vibration of the armature is provided
    스피커 유닛.Speaker unit.
  2. 제1항에 있어서,According to claim 1,
    상기 댐핑 부재는The damping member
    탄성 변형 및 복원이 가능한 것을 특징으로 하는Characterized in that it can be elastically deformed and restored
    스피커 유닛.Speaker unit.
  3. 제1항에 있어서,According to claim 1,
    상기 댐핑 부재는The damping member
    상기 진동부와 상기 솔레노이드 코일 사이에 배치되며 일단이 상기 진동부에 결합되고 타단이 상기 솔레노이드 코일 내측에 결합되는 것을 특징으로 하는It is disposed between the vibration unit and the solenoid coil, characterized in that one end is coupled to the vibration unit and the other end is coupled to the inside of the solenoid coil.
    스피커 유닛.Speaker unit.
  4. 제1항에 있어서,According to claim 1,
    상기 댐핑 부재는The damping member
    상기 연결부와 상기 솔레노이드 코일 사이에 배치되며 일단이 상기 연결부에 결합되고 타단이 상기 솔레노이드 코일에 결합되는 것을 특징으로 하는It is disposed between the connection portion and the solenoid coil, characterized in that one end is coupled to the connection portion and the other end is coupled to the solenoid coil
    스피커 유닛.Speaker unit.
  5. 제1항에 있어서,According to claim 1,
    상기 댐핑 부재는The damping member
    상기 고정부와 상기 솔레노이드 코일 사이에 배치되며 일단이 상기 고정부에 결합되고 타단이 상기 솔레노이드 코일 외측에 결합되는 것을 특징으로 하는It is disposed between the fixing part and the solenoid coil, characterized in that one end is coupled to the fixing part and the other end is coupled to the outside of the solenoid coil.
    스피커 유닛.Speaker unit.
  6. 제1항에 있어서,According to claim 1,
    상기 댐핑 부재는The damping member
    상기 진동부와 상기 기판 사이에 배치되며 일단이 상기 진동부에 결합되고 타단이 상기 기판에 결합되는 것을 특징으로 하는It is disposed between the vibration unit and the substrate, characterized in that one end is coupled to the vibration unit and the other end is coupled to the substrate
    스피커 유닛.Speaker unit.
  7. 제1항에 있어서,According to claim 1,
    상기 댐핑 부재는The damping member
    상기 연결부와 상기 케이싱 사이에 배치되며 일단이 상기 연결부에 결합되고 타단이 상기 케이싱 내측에 결합되는 것을 특징으로 하는It is disposed between the connecting portion and the casing, characterized in that one end is coupled to the connecting portion and the other end is coupled to the inside of the casing.
    스피커 유닛.Speaker unit.
PCT/KR2018/016648 2018-11-08 2018-12-26 Speaker unit WO2020096134A1 (en)

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KR10-2018-0136530 2018-11-08

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CN111698611A (en) * 2020-05-21 2020-09-22 深圳市三宝创新智能有限公司 Sound box isolated by silica gel material

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