KR0121254Y1 - Gorunding system for a head drum assembly - Google Patents

Gorunding system for a head drum assembly Download PDF

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Publication number
KR0121254Y1
KR0121254Y1 KR2019950011861U KR19950011861U KR0121254Y1 KR 0121254 Y1 KR0121254 Y1 KR 0121254Y1 KR 2019950011861 U KR2019950011861 U KR 2019950011861U KR 19950011861 U KR19950011861 U KR 19950011861U KR 0121254 Y1 KR0121254 Y1 KR 0121254Y1
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KR
South Korea
Prior art keywords
drum
assembly
rotating shaft
preload
ground plate
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KR2019950011861U
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Korean (ko)
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KR960038459U (en
Inventor
김명섭
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배순훈
대우전자주식회사
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Priority to KR2019950011861U priority Critical patent/KR0121254Y1/en
Publication of KR960038459U publication Critical patent/KR960038459U/en
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Publication of KR0121254Y1 publication Critical patent/KR0121254Y1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1493—Electro-Magnetic Interference [EMI] or Radio Frequency Interference [RFI] shielding; grounding of static charges
    • 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
    • G11B15/60—Guiding record carrier
    • G11B15/61—Guiding record carrier on drum, e.g. drum containing rotating heads
    • 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
    • G11B15/60—Guiding record carrier
    • G11B15/66—Threading; Loading; Automatic self-loading
    • G11B15/665—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container
    • G11B15/6653—Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum
    • 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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  • Motor Or Generator Frames (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

본 고안은 헤드드럼 조립체의 접지구조를 개시한다.The present invention discloses a grounding structure of a head drum assembly.

본 고안은, 그 양단이 하부드럼의 하부 내측면과 예압보스의 일측 외주면에 접촉되는 접지판을 마련하여, 상,하부드럼의 외주면에 접촉 주행되는 테이프와의 마찰력에 의한 정전기를 회전축에 압입된 예압보스와 하부드럼을 통해 드럼 베이스상으로 접지 시키도록 된 것을 하나의 접지판을 통해 정전기를 용이하게 드럼 베이스상에 접지시킬 수 있는 것이어서, 대폭적인 부품수 감소에 의한 단가절감을 도모한 것이며, 특히 그 조립이 매우 용이하여 작업능률의 향상을 꾀할 수 있는 효과가 있다.The present invention provides a ground plate whose ends are in contact with the lower inner surface of the lower drum and the outer peripheral surface of one side of the preload boss, and the static electricity due to the frictional force of the tape running in contact with the outer circumferential surfaces of the upper and lower drums is pressed into the rotating shaft. The grounding to the drum base through the preload boss and the lower drum can easily ground the static electricity on the drum base through a single ground plate, thereby reducing the unit cost due to a significant reduction in the number of parts, In particular, the assembly is very easy, there is an effect that can improve the work efficiency.

Description

헤드드럼 조립체의 정전기 접지구조Electrostatic Grounding Structure of Head Drum Assembly

제 1 도는 일반적인 헤드드럼 조립체의 단면도.1 is a cross-sectional view of a typical headdrum assembly.

제 2 도는 종래 헤드드럼 조립체의 정전기 접지구조를 도시한 평면도.2 is a plan view showing an electrostatic grounding structure of a conventional head drum assembly.

제 3 도는 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조를 도시한 단면도.3 is a cross-sectional view showing an electrostatic grounding structure of the head drum assembly according to the present invention.

제 4 도는 제 3 도의 요부 발췌 확대도.4 is an enlarged view of the main parts excerpt of FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 회전축 20 : 하부드럼10: axis of rotation 20: lower drum

30 : 드럼 베이스 70 : 예압보스30: drum base 70: preload boss

80 : 드럼모터 81 : 스테이터 코어80: drum motor 81: stator core

82 : 로터코어 90 : 접지판82: rotor core 90: ground plate

본 고안은 헤드드럼 조립체에 관한 것으로서, 더욱 상세하게는 드럼의 표면에 접촉주행되는 테이프와의 마찰에 의해 발생되는 정전기를 용이하게 접지시킬 수 있는 정전기 접지구조에 관한 것이다.The present invention relates to a head drum assembly, and more particularly, to an electrostatic grounding structure that can easily ground the static electricity generated by friction with the tape running in contact with the surface of the drum.

제 1 도는 및 제 2 도에는 일반적인 헤드드럼 조립체의 정전기 접지구조가 도시되어 있다.1 and 2 show the electrostatic grounding structure of a typical headdrum assembly.

이는, 회전축(1)의 상단에는 그 내측면에 헤드(2a)가 고정나사(S)를 통해 고정 설치된 상부드럼(2)이 압입 고정되는 플랜지(3)가 축 지지된다.This, the upper end of the rotating shaft (1) is supported by the flange (3), the head (2a) is fixed to the inner surface through the fixing screw (S), the flange (3) press-fit fixed.

그리고 회전축(1)의 하단에는 하부드럼(4)이 상,하부 베어링(B)에 의해 베어링 지지된다.The lower drum 4 is supported by the upper and lower bearings B at the lower end of the rotating shaft 1.

한편, 전술한 회전축(1)의 하단부에는 예압보스(5)가 회전축(1)의 하단부에 위치된 모터로터(6)에 세트 스크류(s)에 의해 고정 설치된채 그 측면으로 부터 결합되는 조절나사(s')를 통해 하부 베어링(B)의 내륜을 일정하게 가압하고 있다.On the other hand, the adjustment screw is coupled to the lower end of the above-described rotary shaft (1) while the preload boss 5 is fixed to the motor rotor (6) located at the lower end of the rotary shaft (1) by a set screw (s). The inner ring of the lower bearing B is pressurized constantly through s'.

이때 전술한 상,하부드럼(2,4)의 표면으로 테이프가 접촉주행됨에 있어서는, 상,하부드럼(2,4)의 표면과 테이프의 자성면 사이의 마찰에 의해 정전기가 발생되게 된다.At this time, when the tape is in contact with the surface of the upper and lower drums (2, 4), the static electricity is generated by the friction between the surface of the upper and lower drums (2,4) and the magnetic surface of the tape.

이와같은 정전기는 화면상의 노이즈의 원인이 되는 것으로서, 이를 접지시켜 주어야 하는 바, 종래의 구조를 보면, 제 2 도에 도시된 바와 같이 드럼 베이스(7)에 그 일단이 고정된 지지 브라켓(8)과, 이 지지 브라켓의 타단에 마련되며 회전축(1)의 상단부와 접촉되는 탄소브러쉬(9a)를 갖는 탄성편(9)으로 구성되어 있다.Such static electricity causes noise on the screen, which should be grounded. In the conventional structure, as shown in FIG. 2, the support bracket 8 having one end fixed to the drum base 7 is shown. And an elastic piece 9 provided at the other end of the support bracket and having a carbon brush 9a in contact with the upper end of the rotating shaft 1.

그러나 이와같은 종래 헤드드럼 조립체의 정전기 접지구조에 있어서는, 다수의 부품을 구비하여야 함으로써, 작업능률의 저함 및 생산단가의 상승을 초래하는 문제점이 야기되었다.However, in the electrostatic grounding structure of such a conventional head drum assembly, a number of components have to be provided, which causes a problem of lowering work efficiency and increasing production cost.

본 고안은 이와같은 종래의 문제점을 해결하기 위하여 안출된 것으로서, 그 구조가 매우 간단하여 조립작업능률의 향상을 꾀할 수 있으며, 특히 그 부품수를 대폭적으로 감소시킨 것이어서 생산단가의 절감을 도모할 수 있는 헤드드럼 조립체의 정전기 접지구조를 제공함에 그 목적이 있다.The present invention was devised to solve such a conventional problem, and its structure is very simple to improve the assembly work efficiency, and in particular, the number of parts is greatly reduced, so that the production cost can be reduced. It is an object to provide an electrostatic grounding structure of a head drum assembly.

이와같은 목적을 달성하기 위하여 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조는, 회전축과, 이 회전축의 하부에 베어링 지지되며, 드럼 베이스를 통해 데크새시상에 고정 설치되는 하부드럼과, 상기 회전축의 상부에 플랜지를 통해 압입 설치되며 그 내측면에 복수개의 헤드가 설치된 상부드럼과, 상기 회전축의 하단부에 위치되며 베어링에 예압을 가하는 예압보스와, 상기 회전축의 하부에 위치되며 하부드럼에 나사체결되는 스테이터 코어와, 예압보스에 나사체결되는 로터코어를 갖는 드럼모터를 포함하는 헤드드럼 조립체에 있어서, 그 양단이 상기 하부드럼의 하부 내측면과 예압보스의 일측 외주면에 접촉되는 접지판을 마련하여, 상기 상, 하부드럼의 외주면에 접촉 주행되는 테이프와의 마찰력에 의한 정전기를 회전축에 압입된 예압보스와 하부드럼을 통해 드럼 베이스상으로 접지 시키도록 된 것을 그 특징으로 한다.In order to achieve the above object, the electrostatic grounding structure of the head drum assembly according to the present invention includes a rotating shaft, a lower drum supported on a lower portion of the rotating shaft, and fixed to a deck chassis through a drum base, The upper drum is press-fitted through a flange and has a plurality of heads installed on an inner side thereof, a preload boss positioned at a lower end of the rotating shaft to apply a preload to a bearing, and a screw threaded to a lower drum located at a lower portion of the rotating shaft. A head drum assembly comprising a stator core and a drum motor having a rotor core screwed to a preload boss, wherein a ground plate is provided at both ends thereof in contact with a lower inner surface of the lower drum and an outer peripheral surface of one side of the preload boss. Preload in which the static electricity by the frictional force with the tape running in contact with the outer peripheral surface of the upper, lower drum is pressed into the rotating shaft Is that the swash through the lower drum to the ground by the drum base to its features.

본 고안의 바람직한 한 특징은, 상기 접지판은, 상기 하부드럼의 나사체결되는 스테이터 코어와 동일 나사를 통해 하부드럼의 하부 내측면에 고정되도록 된 것에 있다.One preferred feature of the present invention is that the ground plate is fixed to the lower inner surface of the lower drum through the same screw as the stator core to be screwed on the lower drum.

이와같은 본 고안은, 하나의 접지판을 통해 용이하게 정전기를 드럼 베이스상에 접지 시킬 수 있는 것이어서, 대폭적인 부품수 감소에 의한 단가절감을 도모한 것이며, 그 조립또한 매우 용이하여 작업 능률의 향상을 꾀한 이점이 있다.The present invention can easily ground the static electricity on the drum base through a single ground plate, which aims to reduce the unit cost by a significant reduction in the number of parts, and the assembly thereof is also very easy to improve work efficiency. There is an advantage to that.

이하 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조의 바람직한 살시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, a preferred embodiment of the electrostatic grounding structure of the head drum assembly according to the present invention will be described in detail with reference to the accompanying drawings.

제 3 도는 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조를 도시한 단면도이고, 제 4 도는 요부 발췌 확대도이다.3 is a cross-sectional view showing an electrostatic grounding structure of the head drum assembly according to the present invention, Figure 4 is an enlarged view of the main portion extract.

이에 도시된 바와 같이 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조는, 회전축(10)의 하부에는 베어링(B)을 통해 하부드럼(20)이 베어링 지지된다.As shown in the electrostatic grounding structure of the head drum assembly according to the present invention, the lower drum 20 is bearing-supported through the bearing (B) in the lower portion of the rotation shaft (10).

이때 하부드럼(20)은 드럼 베이스(30)를 통해 데크새시(40)상에 안착되게 된다.At this time, the lower drum 20 is to be seated on the deck chassis 40 through the drum base (30).

한편, 전술한 회전축(10)의 상부에는 플랜지(50)를 통해 그 내면에 다수의 헤드(61)가 고정 설치된 상부드럼(60)이 압입된다.On the other hand, the upper drum 60 is pressed into the upper portion of the above-described rotary shaft 10, the plurality of heads 61 are fixed to the inner surface through the flange 50.

또한 전술한 회전축(10)의 하단부에는 하부드럼(20)을 베어링 지지하고 있는 베어링(B)에 소정의 예압을 가하는 예압보스(70)가 압입 설치되며, 특히 회전축(10)을 회전 구동시키기 위한 것으로서, 드럼모터(80)가 위치된다.In addition, the lower end of the rotating shaft 10 is provided with a preload boss 70 for applying a predetermined preload to the bearing (B) supporting the lower drum 20 is press-installed, in particular for rotating the rotating shaft 10 As such, the drum motor 80 is located.

전술한 드럼모터(80)의 구조를 보면, 하부드럼(20)에 나사체결되는 스테이터 코어(81)와, 전술한 예압보스(70)에 나사(S)체결되는 로터코어(82)를 구비한다.The structure of the aforementioned drum motor 80 includes a stator core 81 screwed to the lower drum 20, and a rotor core 82 screwed to the preload boss 70. .

한편, 실질적으로 본 고안의 특징적인 요소를 갖는 것으로서, 전술한 하부드럼(20)의 하부 내측면과 예압보스(70) 사이에는 접지판(90)이 개재되는 바, 이 접지판(90)은 그 양단이 전술한 하부드럼(20)의 하부 내측면과 예압보스(70)의 일측 외주면에 각각 접촉된다.On the other hand, as having substantially the characteristic elements of the present invention, the ground plate 90 is interposed between the lower inner surface of the lower drum 20 and the preload boss 70, the ground plate 90 is Both ends are in contact with the lower inner surface of the lower drum 20 and the outer peripheral surface of one side of the preload boss 70, respectively.

이때 접지판(90)은 전술한 스테이터 코어(81)를 하부드럼(20)의 내측면에 고정 시키기 위한 나사(S)를 통해 동시에 하부드럼(20)의 내측면에 고정 설치함이 단가절감의 측면에서 바람직할 것이다.At this time, the ground plate 90 is fixed to the inner surface of the lower drum 20 at the same time through the screw (S) for fixing the stator core 81 to the inner surface of the lower drum 20 of the unit cost reduction It would be preferred in terms of.

또한 접지판(90)을 하부드럼(20)의 내측면에 고정 시킴에 있어서는, 하부드럼(20)의 하부 내측면에 접지판(90)과 동일 형상의 안착홈(21)을 마련하여 접지판(90)을 안착 시킨 상태에서 나사(S)를 통해 고정함이 더욱 바람직할 것이다.In addition, in fixing the ground plate 90 to the inner surface of the lower drum 20, a grounding groove 21 having the same shape as the ground plate 90 is provided on the lower inner surface of the lower drum 20. It will be more preferable to fix through the screw (S) in the 90 seated state.

이와같이 구성된 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조는, 도시되지 않은 테이프가 상,하부드럼(60,20)의 외주면에 접촉 주행됨에 있어서, 테이프의 자성면과의 마찰에 의해 정전기가 발생되게 되면, 이 정전기는 회전축(10)의 하단부를 통해 예압보스(70)와 하부드럼(20)을 거쳐 드럼 베이스(30)상에 접지되게 된다.The electrostatic grounding structure of the head drum assembly according to the present invention configured as described above is such that the static electricity is generated by friction with the magnetic surface of the tape when the tape (not shown) is in contact with the outer circumferential surfaces of the upper and lower drums 60 and 20. Then, the static electricity is grounded on the drum base 30 via the preload boss 70 and the lower drum 20 through the lower end of the rotating shaft 10.

이는 접지판(90)의 양단이 하부드럼(20)과 예압보스(70)에 각각 접촉되어 있기 때문이다.This is because both ends of the ground plate 90 are in contact with the lower drum 20 and the preload boss 70, respectively.

따라서 정전기에 의한 화면상의 노이즈등을 방지할 수 있다.Therefore, noise on the screen due to static electricity can be prevented.

상술한 바와 같이 본 고안에 따른 헤드드럼 조립체의 정전기 접지구조에 의하면, 하나의 접지판을 통해 정전기를 용이하게 드럼 베이스상에 접지시킬 수 있는 것이어서, 대폭적인 부품수 감소에 의한 단가절감을 도모한 것이며, 특히 그 조립이 매우 용이하여 작업능률의 향상을 꾀할 수 있는 효과가 있다.As described above, according to the electrostatic grounding structure of the head drum assembly according to the present invention, it is possible to easily ground the static electricity on the drum base through a single ground plate, thereby achieving cost reduction by a significant reduction in the number of parts. In particular, the assembly is very easy, there is an effect that can improve the work efficiency.

Claims (2)

회전축과, 이 회전축의 하부에 베어링 지지되며, 드럼 베이스를 통해 데크새시상에 고정 설치되는 하부드럼과, 상기 회전축의 상부에 플랜지를 통해 압입 설치되며 그 내측면에 복수개의 헤드가 설치된 상부드럼과, 상기 회전축의 하단부에 위치되며 베어링에 예압을 가하는 예압보스와, 상기 회전축의 하부에 위치되며 하부드럼에 나사체결되는 스테이터 코어와, 예압보스에 나사체결되는 로터코어를 갖는 드럼모터를 포함하는 헤드드럼 조립체에 있어서, 그 양단이 상기 하부드럼(20)의 하부 내측면과 예압보스(70)의 일측 외주면에 접촉되는 접지판(90)을 마련하여, 상기 상,하부드럼(60,20)의 외주면에 접촉 주행되는 테이프와의 마찰력에 의한 정전기를 회전축(10)에 압입된 예압보스 (70)와 하부드럼(20)을 통해 드럽 베이스(30)상으로 접지 시키도록 된 것을 특징을 하는 헤드드럽 조립체의 정전기 접지구조.A lower drum which is bearing-supported to the lower part of the rotating shaft, fixed to the deck chassis through the drum base, and an upper drum which is press-fitted through a flange on the upper part of the rotating shaft and provided with a plurality of heads on an inner side thereof; A head including a drum motor having a preload boss positioned at a lower end of the rotary shaft and applying a preload to a bearing, a stator core positioned below the rotary shaft and screwed to a lower drum, and a rotor core screwed to the preload boss. In the drum assembly, the ground plate 90 is provided at both ends thereof in contact with the lower inner surface of the lower drum 20 and the outer circumferential surface of one side of the preload boss 70, thereby providing the upper and lower drums 60 and 20. It is to ground the static electricity by the frictional force with the tape running in contact with the outer circumferential surface on the drum base 30 through the preload boss 70 and the lower drum 20 pressed into the rotating shaft 10. Electrostatic grounding structure of the head drop assembly, characterized in that. 제 1 항에 있어서, 상기 접지판(90)은, 상기 하부드럼(20)의 나사(S)체결되는 스테이터 코어(81)와 동일 나사를 통해 하부드럼(20)의 하부 내측면에 고정되도록 된 것을 특징으로 하는 헤드드럼 조립체의 정전기 접지구조.According to claim 1, wherein the ground plate 90 is fixed to the lower inner surface of the lower drum 20 through the same screw as the stator core 81 is fastened to the screw (S) of the lower drum (20) Electrostatic grounding structure of the head drum assembly, characterized in that.
KR2019950011861U 1995-05-30 1995-05-30 Gorunding system for a head drum assembly KR0121254Y1 (en)

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KR2019950011861U KR0121254Y1 (en) 1995-05-30 1995-05-30 Gorunding system for a head drum assembly

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KR0121254Y1 true KR0121254Y1 (en) 1998-08-01

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