KR100260223B1 - Device for preventing resonance of magnetic head drum - Google Patents

Device for preventing resonance of magnetic head drum Download PDF

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Publication number
KR100260223B1
KR100260223B1 KR1019970074736A KR19970074736A KR100260223B1 KR 100260223 B1 KR100260223 B1 KR 100260223B1 KR 1019970074736 A KR1019970074736 A KR 1019970074736A KR 19970074736 A KR19970074736 A KR 19970074736A KR 100260223 B1 KR100260223 B1 KR 100260223B1
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KR
South Korea
Prior art keywords
drum
transmission member
rotor motor
motor
magnetic head
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KR1019970074736A
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Korean (ko)
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KR19990054859A (en
Inventor
서경수
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구자홍
엘지전자주식회사
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Priority to KR1019970074736A priority Critical patent/KR100260223B1/en
Publication of KR19990054859A publication Critical patent/KR19990054859A/en
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Publication of KR100260223B1 publication Critical patent/KR100260223B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1825—Driving of both record carrier and head driving or moving the head in a direction which cuts across the direction of travel of the tape, e.g. for helicoïdal scanning
    • G11B15/1833—Driving of both record carrier and head driving or moving the head in a direction which cuts across the direction of travel of the tape, e.g. for helicoïdal scanning with head driven in a plane, cyclically around an axis, e.g. on headwheel
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis

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Abstract

PURPOSE: A device for preventing a resonance of a magnetic head drum is provided to set a tightening force of an engaging member fixedly by integrally forming a regulating unit as conforming to the lower portion of a rotor motor at the lower portion of a transmission member being combined to the rotor motor. CONSTITUTION: A rotating shaft(20) is installed at the central portion on condition that an upper drum(12) and a lower drum(18) are closely combined thereto. A supporting member(24) one side lower surface thereof is fixed to a stator motor is penetrably combined to the rotating shaft(20) separately provided to the lower drum(18). A transmission member(28) being closely contacted to the outer surface of the rotating shaft(20) is included at the central inner portion of a rotor motor(26). A regulating unit(42) forming a stepped surface(40) with the transmission member(28) and protrusively formed in the lower direction in the lower portion of the transmission member(28) is inserted and combined at the lower surface of the rotor motor(26) in parallel. A head unit(32a) of an engaging member(32)(for example, a screw) is closely combined at a lower surface of the regulating unit(42) of the transmission member(28) at a lower surface of the rotor motor(26) for maintaining a tightening force fixedly.

Description

자기 헤드드럼의 공진방지장치Anti-resonance device of magnetic head drum

본 발명은 자기 헤드드럼의 공진방지장치(Resonance Prevention Device For Magnetic Head Drum)에 관한 것으로 보다 상세하게는 로우터 모터의 내부에 삽입.결합되는 전달부재에 이와 일체로 형성되는 규제부를 돌출.형성함으로써, 댐퍼 와셔(Damper Washer)를 체결.결합시, 댐퍼 와셔의 조임력을 일정하게 형성하고, 이에따라 댐퍼와셔의 완충력을 최적의 적합한 상태로 극대화 시킬 수 있도록 한 것이다.The present invention relates to a resonance prevention device for a magnetic head drum, and more particularly, by protruding and forming a regulation part integrally formed with a transmission member inserted into and coupled to a rotor motor. When the damper washer is fastened and combined, the clamping force of the damper washer is formed uniformly, thus maximizing the damping force of the damper washer to an optimal state.

일반적으로, VCR(Video Cassette Recorder)의 내부에는 자기테이프에 기록을 읽거나 혹은 기록하고자 자기 헤드드럼이 설치되어 있는바, 이 자기 헤드드럼은 첨부된 예시도면 도 1에 도시된 바와 같이 먼저, 헤드(10)를 구비하는 상부드럼(12)의 하부에는 내부에 수직 이격된 상태로 제 1,2베어링(14,16)을 구비한 하부드럼(18)이 상호 밀착.결합되어 있고, 이 상,하부드럼(12,18)의 중앙에는 회전축(20)이 관통.설치되어 있으며, 이 하부드럼(18) 하부에는 일측 저면에 스테이터 모터(22)와, 로우터 모터(26)로 나누어지는 모터부(25)가 설치되어 있다.In general, a magnetic head drum is installed in the VCR (Video Cassette Recorder) to read or record a recording on a magnetic tape. The magnetic head drum is first shown in FIG. The lower drum 18 having the first and second bearings 14 and 16 is in close contact with each other at a lower portion of the upper drum 12 having the upper portion 10 and vertically spaced therein. A rotating shaft 20 penetrates and is installed at the center of the lower drums 12 and 18, and a motor part divided into a stator motor 22 and a rotor motor 26 is disposed at one bottom of the lower drum 18. 25) is installed.

또한, 상기 모터부(25)는 먼저 하부드럼(18)과 이격된 부위에 지지부재(24)가 관통.결합되어 있고, 이 지지부재(24)의 일측 저면에는 스테이터 모터(22)가 부착.고정되어 있으며, 이 지지부재(24)의 하부에는 로우터 모터(26)가 회전가능하도록 회전축(20)에 관통.결합되어 있다.In addition, the motor portion 25 is a support member 24 is first penetrated and coupled to a portion spaced from the lower drum 18, the stator motor 22 is attached to the bottom of one side of the support member 24. It is fixed, the lower portion of the support member 24 is penetrated and coupled to the rotating shaft 20 so that the rotor motor 26 is rotatable.

또한, 상기 로우터 모터(26)의 중앙 내부에 회전축(20)의 외면과 밀착되는 상태로 전달부재(28)가 삽입되어 있고, 이 전달부재(28)의 저면과 로우터 모터(26) 내의 바닥면 사이에는 이 로우터 모터(26)의 회전에 따른 충격 혹은 떨림을 완충시키고자 댐퍼 와셔(30)가 결합되어 있다.In addition, the transmission member 28 is inserted into the center of the rotor motor 26 in close contact with the outer surface of the rotation shaft 20, the bottom surface of the transmission member 28 and the bottom surface in the rotor motor 26. A damper washer 30 is coupled between the damper washers to cushion shocks or vibrations caused by the rotation of the rotor motor 26.

그리고, 상기 로우터 모터(26)의 저면에는 체결수단(32)(예를들어 스크류)를 매개로 하여 댐퍼 와셔(30)와 전달부재(28)가 순차적으로 체결.고정되어 있으며, 이와 같이 결합된 상태에서 도시되지 않은 서보회로에 외부로 부터 전기적 신호가 인가되면, 이 로우터 모터(26)는 지지부재(24)의 일측에 부착.고정되어 있는 스테이터 모터(22)와 상호 작용에 의해 일방향으로 회전하게 되고, 이 회전력은 체결수단(32)로 체결.고정되어 있는 전달부재(28)로 전달되는데, 이때 상기 로우터 모터(26)의 회전에 의한 진동과 전달부재(28) 간의 상호 떨림을 상기 댐퍼 와셔(30)가 완충 혹은 완화시키는 작용을 하게 되는 것이다.In addition, the damper washer 30 and the transmission member 28 are sequentially fastened and fixed to the bottom of the rotor motor 26 through the fastening means 32 (for example, a screw). When an electrical signal is applied to the servo circuit (not shown) from the outside, the rotor motor 26 rotates in one direction by interaction with the stator motor 22 which is attached and fixed to one side of the support member 24. This rotational force is transmitted to the transmission member 28 which is fastened by the fastening means 32. At this time, the vibration caused by the rotation of the rotor motor 26 and the mutual vibration between the transmission member 28 are damped. Washer 30 is to act to buffer or to relax.

그런데, 상기 댐퍼 와셔(30)를 로우터 모터(26)의 바닥면과 전달부재(28)의 저면 사이에 체결.고정시, 이 전달부재(28)의 저면이 수평의 평편한 면으로 형성되어 있어서, 예컨데 상기 체결수단(32)의 조임력을 강하게 할 경우, 이 댐퍼 와셔(30)의 상면이 전달부재(28)의 저면에 압압.밀착되면서 형상이 일그러지거나 혹은 변형되어 완충력의 작용이 저하되고, 이와 반대로 체결수단(32)의 조임력을 약하게 할 경우에는 이 댐퍼 와셔(30)의 상면이 전달부재(28)의 저면에 느슨하게 밀착되어 완충력의 작용은 커지나, 오히려 떨림이 유발됨으로써, 결국 이 댐퍼 와셔(30)의 체결시, 완충작용을 최적의 적합한 상태로 하기 위한 체결수단(32)의 조임력을 일정하게 할 수 없는 문제점이 있었다.However, the damper washer 30 is fastened between the bottom surface of the rotor motor 26 and the bottom surface of the transmission member 28. At the time of fixing, the bottom surface of the transmission member 28 is formed in a horizontal flat surface. For example, when the tightening force of the fastening means 32 is strong, the upper surface of the damper washer 30 is pressed against the bottom of the transmission member 28, the shape is distorted or deformed to reduce the action of the buffer force, On the contrary, when the fastening force of the fastening means 32 is weakened, the upper surface of the damper washer 30 is loosely in close contact with the bottom surface of the transmission member 28, so that the action of the buffering force is increased, but rather, the vibration is caused, so that the damper washer eventually. At the time of fastening of 30, there was a problem that the tightening force of the fastening means 32 in order to make the buffering action in an optimal suitable state cannot be made constant.

본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 로우터 모터와결합되는 전달부재의 하부부위에 이와 일체로 형성되는 규제부를 로우터 모터의 저면과 일치되도록 형성하여, 체결수단의 조임력을 일정하게 셋팅하고, 이에따라 댐퍼 와셔의 완충작용을 극대화 시킬 수 있도록 한 자기 헤드드럼의 공진방지장치를 제공함에 그 목적이 있다.The present invention has been made in order to solve the above problems, and formed in the lower portion of the transmission member coupled to the rotor motor is formed integrally with this to match the bottom surface of the rotor motor, the tightening force of the fastening means is constant It is an object of the present invention to provide an anti-resonance device of a magnetic head drum which is set so that the damping action of the damper washer can be maximized.

본 발명은 상기와 같은 목적을 달성하기 위한 것으로, 자기 헤드드럼의 공진방지장치에 있어서, 회전하는 상부드럼과, 이 상부드럼이 회전가능하도록 상부드럼과 연결되어 하부드럼에 지지되는 회전축과, 이 하부드럼과 이격된 하부에 설치된 모터부와, 상기 모터부가 상기 회전축과 일체로 회전하도록 고정하는 체결수단과, 상기 체결수단의 체결정도를 규제하는 규제부와, 상기 모터부와 회전축 사이에 설치된 구조와, 또는 회전하는 상부드럼과, 이 상부드럼에 관통된 회전축과, 이 회전축에 결합된 모터부와, 이 모터부와 동력을 회전축에 전달하며 규제부가 돌출형성된 전달부재와, 상기 모터부를 상기 전달부재에 고정하며 체결정도가 상기 규제부에 규제되는 체결수단으로 구성된 구조로서, 상기 규제부에 의해 더 이상의 조임이 이루지지 않게 됨에 따라 댐퍼 와셔의 압압.밀착되는 정도가 적절한 상태로 이루어져 완충작용을 최적의 적합한 상태로 극대화 시킬 수 있는 점에 특징이 있다.The present invention is to achieve the above object, in the anti-resonance device of the magnetic head drum, a rotating upper drum, a rotating shaft connected to the upper drum so that the upper drum is rotatable and supported by the lower drum, A motor unit disposed below the lower drum, a fastening means for fixing the motor unit to rotate integrally with the rotary shaft, a restricting portion for regulating the fastening degree of the fastening means, and a structure provided between the motor portion and the rotary shaft And a rotating upper drum, a rotating shaft penetrating the upper drum, a motor portion coupled to the rotating shaft, a transmitting member which transmits the motor portion and power to the rotating shaft and protrudes from the restricting portion, and transmits the motor portion. It is a structure composed of a fastening means fixed to the member and the fastening degree is regulated in the control unit, so that no further tightening is achieved by the control unit Pressure of the damper according to the washer. The degree to which the adhesive consists of a suitable condition is characterized in that to maximize the buffering action to the best suitable condition.

도 1은 일반적인 자기 헤드드럼의 결합상태를 나타낸 부분단면도1 is a partial cross-sectional view showing a coupling state of a typical magnetic head drum

도 2는 본 발명의 자기 헤드드럼용 공진방진장치를 나타낸 부분단면도2 is a partial cross-sectional view showing a resonant vibration isolator for a magnetic head drum of the present invention;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 헤드 12 : 상부드럼10 head 12 upper drum

14 : 제 1베어링 16 ; 제 2베어링14: first bearing 16; 2nd Bearing

18 : 하부드럼 20 : 회전축18: lower drum 20: axis of rotation

22 : 스테이터 모터 24 : 지지부재22: stator motor 24: support member

26 : 로우터 모터 28 : 전달부재26: rotor motor 28: transmission member

30 : 댐퍼 와셔 32 : 체결수단30: damper washer 32: fastening means

40 : 단턱면 42 : 규제부40: step surface 42: regulatory unit

첨부된 예시도면 도 2는 본 발명의 자기 헤드드럼의 공진방지장치를 나타낸 도면인 바, 첨부된 예시도면 도 1과 동일한 참조번호는 동일한 부품을 표시하므로 이에대한 설명은 생략하고 도 1과 상이한 점에 대해서만 설명하기로 한다.2 is a view showing an anti-resonance device of a magnetic head drum according to the present invention. Since the same reference numerals as those in FIG. 1 denote the same parts, the description thereof is omitted and is different from FIG. Only the description will be given.

첨부된 예시도면 도 2를 참조하면, 상,하부드럼(12,18)이 상호 밀착.결합상태에서 중앙에 회전축(20)이 관통.설치되어 있고, 이 하부드럼(18)과 이격된 회전축(20)에는 일측 저면에 스테이터 모터(22)를 부착.고정한 지지부재(24)가 관통.결합되어 있다.Referring to FIG. 2, the upper and lower drums 12 and 18 are in close contact with each other. The rotating shaft 20 is penetrated and installed at the center in a state where the upper and lower drums 12 and 18 are in close contact with each other. 20, the stator motor 22 is attached to the bottom of one side. A fixed support member 24 is connected therethrough.

또한, 이 로우터 모터(26)의 중앙 내부에는 회전축(20)의 외면과 밀착되는 상태로 전달부재(28)가 내장되어 있는데, 여기서 본 발명은 상기 전달부재(28)의 하부 일정부위에 이와 일체로 단턱면(40)을 이루면서 일정길이로 하향.돌출된 규제부(42)가 로우터 모터(26)의 저면과 수평으로 일치된 상태로 삽입.결합되어 있고, 이 로우터 모터(26)의 저면에는 조임력이 일정하도록 체결수단(32)(예를들어 스크류)의 머리부(32a)가 전달부재(28)의 규제부(42) 저면에 밀착.체결되도록 구성되어 있다.In addition, a transmission member 28 is built in the center of the rotor motor 26 to be in close contact with the outer surface of the rotation shaft 20, wherein the present invention is integrated with the lower predetermined portion of the transmission member 28. The control unit 42 is inserted into and coupled to the bottom of the rotor motor 26 in a horizontally aligned state. The head portion 32a of the fastening means 32 (for example, screw) is configured to be in close contact with the bottom face of the restricting portion 42 of the transmission member 28 so that the tightening force is constant.

상기와 같이 구성된 본 발명은 먼저, 댐퍼 와셔(30)를 로우터 모터(26)의 바닥면과 전달부재(28)의 사이에 체결.고정시, 이 전달부재(28)의 하부에는 첨부된 예시도면 도 2에 도시된 바와 같이 상부의 외경보다 작은 외경의 단턱면(40)을 이루면서 이와 일체로 형성된 규제부(42)가 일정길이로 하향 돌출된 상태로 로우터 모터(26)의 저면과 수평으로 일치되도록 결합되어 있어서, 작업자가 체결수단(32)을 조임시, 이 체결수단(32)의 머리부(32a) 상면이 로우터 모터(26)의 저면과 규제부(42)의 저면에 각각 밀착됨으로써, 결국 이 규제부(42)에 의해 더 이상 체결수단(32)의 조임이 이루지지 않고, 이에따라 댐퍼 와셔(30)가 최적의 적합한 상태로 위치 및 조임력이 설정.셋팅되는 것이다.According to the present invention configured as described above, first, the damper washer 30 is fastened between the bottom surface of the rotor motor 26 and the transmission member 28. As shown in FIG. 2, the control unit 42 integrally formed with the stepped surface 40 having an outer diameter smaller than the outer diameter of the upper portion coincides with the bottom surface of the rotor motor 26 in a state in which the restricting portion 42 protrudes downward at a predetermined length. When the operator tightens the fastening means 32, the upper surface of the head portion 32a of the fastening means 32 comes into close contact with the bottom of the rotor motor 26 and the bottom of the restricting portion 42, respectively. As a result, the fastening means 32 is no longer tightened by the restricting portion 42, and thus the damper washer 30 is set and set in the optimum position.

즉, 상기와 같이 체결수단(32)의 조임력이 일정한 상태로 이루어지게 되면, 이 체결수단(32)의 조임력에 의해 결합되는 댐퍼 와셔(30)의 상면이 전달부재(28)의 단턱면(40)에 압압.밀착되는 정도가 적절한 상태로 압압.밀착되어 완충작용을 극대화시키게 되는 것이다.That is, when the tightening force of the fastening means 32 is made as described above, the upper surface of the damper washer 30 coupled by the tightening force of the fastening means 32 is the stepped surface 40 of the transmission member 28. ) To the degree of pressure and tightness to the appropriate state is to maximize the buffering effect.

따라서, 종래에는 전달부재(28)의 저면이 수평의 평편한 면으로 형성되어 있어서, 체결수단(32)의 조임력을 정확하게 셋팅하지 못하여, 댐퍼 와셔(30)의 기능상 최적의 완충작용이 어려웠으나, 본 발명은 전달부재(28)의 하부에 단턱면(40)을 이루면서 이와 일체로 돌출.형성된 규제부(42)가 로우터 모터(26)의 저면과 수평으로 일치된 상태로 결합되어 있어, 체결수단(32)를 조임시, 이 체결수단(32)의 머리부(32a)의 상면이 전달부재(28)의 규제부(42) 저면에 밀착되어, 더 이상의 조임이 이루지지 않게 되고, 이에따라 댐퍼 와셔(30)의 압압.밀착되는 정도가 적절한 상태로 이루어져 댐퍼 와셔(30) 완충작용의 극대화 및 조립위치를 정확하게 셋팅할 수 있는 것이다.Therefore, in the related art, the bottom surface of the transmission member 28 is formed as a flat horizontal surface, and thus, the clamping force of the fastening means 32 cannot be set accurately, and thus the optimal buffering function of the damper washer 30 is difficult. The present invention forms a stepped surface 40 at the lower portion of the transfer member 28 and protrudes integrally therewith. The restricting portion 42 is coupled to the bottom surface of the rotor motor 26 in a horizontally aligned state, so that the fastening means is fastened. When tightening (32), the upper surface of the head portion (32a) of the fastening means 32 is in close contact with the bottom surface of the restricting portion (42) of the transmission member 28, no further tightening is achieved, thereby damper washer (30) of the pressing, the degree of close contact is made in the appropriate state to maximize the damper washer (30) buffering action and to accurately set the assembly position.

위와 같이 본 발명은 전달부재의 하부부위에 이와 일체로 형성되는 규제부를 로우터 모터의 저면과 수평이 되도록 형성하여, 체결수단의 조임력을 일정하게 설정하고, 이에따라 댐퍼 와셔 완충작용의 극대화 및 조립위치를 정확하게 설정할 수 있는 효과가 있다.As described above, the present invention is formed in the lower portion of the transmission member to be integrally formed with the bottom surface of the rotor motor to be horizontal, to set the tightening force of the fastening means constant, thereby maximizing the damper washer buffer action and assembly position There is an effect that can be set correctly.

Claims (2)

자기 헤드드럼의 공진방지장치에 있어서,In the anti-resonance device of the magnetic head drum, 회전하는 상부드럼(12)과, 이 상부드럼(12)이 회전가능하도록 상부드럼(12)과 연결되어 하부드럼(18)에 지지되는 회전축(20)과, 이 하부드럼(18)과 이격된 하부에 설치된 모터부(25)와, 상기 모터부(25)가 상기 회전축(20)과 일체로 회전하도록 고정하는 체결수단(32)과, 상기 모터부(25)와 회전축(20) 사이에 체결수단(32)의 체결정도를 규제하는 규제부(42)가 설치된 것을 특징으로 하는 자기 헤드드럼의 공진방지장치.A rotating upper drum 12, a rotating shaft 20 connected to the upper drum 12 and supported by the lower drum 18 so that the upper drum 12 is rotatable, and spaced apart from the lower drum 18 Fastening between the motor portion 25 provided below, the fastening means 32 for fixing the motor portion 25 to rotate integrally with the rotary shaft 20, and the motor portion 25 and the rotary shaft 20 An anti-resonance device for a magnetic head drum, characterized in that a restricting portion (42) is provided for regulating the fastening degree of the means (32). 회전하는 상부드럼(12)와, 이 상부드럼(12)에 관통된 회전축(20)과, 이 회전축에 결합된 모터부(25)와, 이 모터부(25)와 동력을 회전축에 전달하며 규제부(42)가 돌출형성된 전달부재(28)와, 상기 모터부(25)를 상기 전달부재(28)에 고정하며 체결정도가 상기 규제부(42)에 규제되는 체결수단(32)으로 구성된 것을 특징으로 하는 자기 헤드드럼의 공진방지장치.The upper drum 12 rotates, the rotating shaft 20 penetrated through the upper drum 12, the motor portion 25 coupled to the rotating shaft, and the motor portion 25 and power are transmitted to and regulated. Consisting of the transmission member 28 protruding portion 42, the fastening means 32 is fixed to the motor member 25 to the transmission member 28, the degree of fastening is regulated by the control unit 42 Anti-resonance device of the magnetic head drum.
KR1019970074736A 1997-12-26 1997-12-26 Device for preventing resonance of magnetic head drum KR100260223B1 (en)

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KR1019970074736A KR100260223B1 (en) 1997-12-26 1997-12-26 Device for preventing resonance of magnetic head drum

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Application Number Priority Date Filing Date Title
KR1019970074736A KR100260223B1 (en) 1997-12-26 1997-12-26 Device for preventing resonance of magnetic head drum

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KR19990054859A KR19990054859A (en) 1999-07-15
KR100260223B1 true KR100260223B1 (en) 2000-07-01

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