KR0130230Y1 - Rotary head drum apparatus of magnetic recording and reproducing apparatus - Google Patents

Rotary head drum apparatus of magnetic recording and reproducing apparatus Download PDF

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Publication number
KR0130230Y1
KR0130230Y1 KR2019950032111U KR19950032111U KR0130230Y1 KR 0130230 Y1 KR0130230 Y1 KR 0130230Y1 KR 2019950032111 U KR2019950032111 U KR 2019950032111U KR 19950032111 U KR19950032111 U KR 19950032111U KR 0130230 Y1 KR0130230 Y1 KR 0130230Y1
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KR
South Korea
Prior art keywords
drum
head
tape
magnetic recording
rotating
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KR2019950032111U
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Korean (ko)
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KR970025310U (en
Inventor
최용채
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구자홍
엘지전자주식회사
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Priority to KR2019950032111U priority Critical patent/KR0130230Y1/en
Publication of KR970025310U publication Critical patent/KR970025310U/en
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Publication of KR0130230Y1 publication Critical patent/KR0130230Y1/en

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    • 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
    • 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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/105—Mounting of head within housing or assembling of head and housing

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

본 고안은 자기기록재생기의 회전헤드드럼장치에 관한 것으로, 종래의 회전헤드드럼장치에서 하부드럼의 구조상 테이프의 손상이 발생되고 주행 성능이 좋지 않은 문제점을 해결하기 위한 것이다. 이와 같은 본 고안은 회전하는 상부드럼(1)과 상기 상부드럼(1)과 동축으로 설치된 하부드럼(20)으로 구성된 회전헤드드럼장치에서, 상기 하부드럼(20)의 테이프(T)가 접촉되는 외주면(21)의 두께를 거의 일정하게 형성하고, 헤드(7)가 상면에 취부되어 상부실린더(1)의 하면에 고정설치되는 헤드지지대(30)의 말단부에 단턱(31)을 형성하여 구성된다. 본 고안에 의하면 테이프의 손상이 방지되고 테이프의 주행성능이 현저하게 개선되는 이점이 있다.The present invention relates to a rotating head drum device of a magnetic recording and reproducing apparatus, and to solve the problem of tape damage and poor driving performance due to the structure of the lower drum in the conventional rotating head drum device. The present invention has a rotating head drum device consisting of a rotating upper drum (1) and a lower drum (20) coaxially installed with the upper drum (1), the tape (T) of the lower drum 20 is in contact The thickness of the outer circumferential surface 21 is formed to be substantially constant, and the head 7 is mounted on the upper surface to form a step 31 on the distal end of the head support 30 fixed to the lower surface of the upper cylinder 1. . According to the present invention there is an advantage that the damage of the tape is prevented and the running performance of the tape is significantly improved.

Description

자기기록재생기의 회전헤드드럼 장치Rotating head drum device of magnetic recording player

제1도는 종래 기술에 의한 자기기록재생기의 회전헤드드럼 장치의 구성을 보인 단면도.1 is a cross-sectional view showing the configuration of a rotating head drum device of a magnetic recording and reproducing apparatus according to the prior art.

제2도는 종래 기술에 의한 자기기록재생기의 회전헤드드럼 장치의 구성부품을 도시한 도면으로, (a)는 하부드럼의 평면도, (b)는 하부드럼의 단면도, (c)는 헤드지지대의 단면도.2 is a view showing the components of a rotating head drum device of a magnetic recording and reproducing apparatus according to the prior art, (a) is a plan view of a lower drum, (b) is a sectional view of a lower drum, and (c) is a sectional view of a head support. .

제3도는 종래 기술에 의한 헤드드럼 가공방식을 설명하기 위한 도면으로, (a)는 스트레이트 방식으로 가공된 헤드드럼의 정면도, (b)(c)(d)는 각각 (a)의 A-A, B-B, C-C선 단면도.3 is a view for explaining a head drum processing method according to the prior art, (a) is a front view of a head drum processed in a straight manner, (b) (c) (d) is AA of (a), BB, CC line cross section.

제4도는 종래 기술에 의한 헤드드럼 가공방식을 설명하기 위한 도면으로, (a)는 슬랜트 스커트 방식으로 가공된 헤드드럼의 정면도, (b)(c)(d)는 각각 (a)의 A-A, B-B, C-C선 단면도.4 is a view for explaining the head drum processing method according to the prior art, (a) is a front view of the head drum processed by the slant skirt method, (b) (c) (d) is a Section AA, BB, CC line.

제5도는 종래 기술에 의한 헤드드럼의 하부드럼의 문제점을 설명하기 위한 도면으로, (a)는 하부드럼의 단면도, (b)는 (a)와 같은 하부드럼을 구비한 헤드드럼장치에서 테이프의 주행상태를 도시한 단면도.5 is a view for explaining the problem of the lower drum of the head drum according to the prior art, (a) is a cross-sectional view of the lower drum, (b) is a head drum device having a lower drum as shown in (a) Sectional view showing driving condition.

제6도는 본 고안에 의한 회전헤드드럼장치의 구성을 도시한 단면도.6 is a cross-sectional view showing a configuration of a rotating head drum device according to the present invention.

제7도는 본 고안에 의한 회전헤드드럼장치의 하부드럼의 구성을 도시한 도면으로, (a)는 평면도, (b)는 단면도.7 is a view showing the configuration of the lower drum of the rotating head drum device according to the present invention, (a) is a plan view, (b) is a cross-sectional view.

제8도는 본 고안에 의한 회전헤드드럼장치의 헤드지지대의 구성을 도시한 단면도.8 is a cross-sectional view showing the configuration of the head support of the rotating head drum device according to the present invention.

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

1 : 상부드럼 7 : 헤드1: upper drum 7: head

20 : 하부드럼 21 : 하부드럼 외주면20: lower drum 21: outer peripheral surface of the lower drum

30 : 헤드지지대 30' : 나사공30: head support 30 ': screw hole

T : 테이프T: Tape

본 고안은 자기기록재생기의 회전헤드드럼장치에 관한 것으로, 특히 하부드럼과 헤드지지대의 구성을 변형하여 헤드드럼에서의 테이프주행특성을 개선한 자기기록재생기의 회전헤드드럼장치에 관한 것이다.The present invention relates to a rotating head drum device of a magnetic recording and reproducing apparatus, and more particularly, to a rotating head drum device of a magnetic recording and / or reproducing a tape running characteristic of a head drum by modifying a configuration of a lower drum and a head support.

제1도는 종래 기술에 의한 자기기록재생기의 회전헤드드럼장치의 구성을 보인 단면도이고, 제2도는 종래 기술에 의한 자기기록재생기의 회전헤드드럼장치의 구성부품을 도시한 도면으로, (a)는 하부드럼의 평면도, (b)는 하부드럼의 단면도, (c)는 헤드지지대의 단면도이며, 제3도는 종래 기술에 의한 헤드드럼 가공방식을 설명한 것으로, (a)는 스트레이트 방식으로 가공된 헤드드럼의 정면도, (b)(c)(d)는 각각 (a)의 A-A, B-B, C-C선 단면도이며, 제4도는 종래 기술에 의한 헤드드럼 가공방식을 설명한 것으로, (a)는 슬랜트 스커트 방식으로 가공된 헤드드럼의 정면도, (b)(c)(d)는 각각 (a)의 A-A, B-B, C-C선 단면도이며, 제5도는 종래 기술에 의한 헤드드럼의 하부드럼의 문제점을 설명하기 위한 도면으로, (a)는 하부드럼의 단면도, (b)는 (a)와 같은 하부드럼을 구비한 헤드드럼장치에서 테이프의 주행상태를 도시한 단면도이다.1 is a cross-sectional view showing the configuration of a rotating head drum device of the magnetic recording and reproducing apparatus according to the prior art, and FIG. 2 is a view showing the components of the rotating head drum device of the magnetic recording and reproducing apparatus according to the prior art. Top view of the lower drum, (b) is a cross-sectional view of the lower drum, (c) is a cross-sectional view of the head support, Figure 3 illustrates a head drum processing method according to the prior art, (a) is a head drum processed in a straight manner (B) (c) (d) are sectional views taken along line AA, BB and CC of (a), respectively, and FIG. 4 illustrates a head drum processing method according to the prior art, and (a) is a slant skirt. (B) (c) (d) are cross sectional views taken along lines AA, BB and CC of (a), respectively, and FIG. 5 illustrates a problem of the lower drum of the head drum according to the prior art. (A) is a cross-sectional view of the lower drum, (b) is provided with a lower drum as shown in (a) De drum device a sectional view showing a running state of the tape.

제1도에서 도면 부호 1은 상부드럼, 2는 하부드럼, 3은 회전트랜스, 4는 고정트랜스, 5는 고정자, 6은 회전자, 7은 헤드, 8은 회전축, 9는 링칼라, 10은 헤드높이 조정나사, 11은 헤드체결나사, 12는 베어링이다.In FIG. 1, reference numeral 1 denotes an upper drum, 2 lower drum, 3 a rotary transformer, 4 a fixed transformer, 5 a stator, 6 a rotor, 7 a head, 8 a rotating shaft, 9 a ring collar, and 10 a Head height adjustment screw, 11 are head tightening screws, 12 are bearings.

상기와 같은 구성을 가지는 헤드드럼장치에서 상부드럼(1) 및 하브드럼(2)은 그 외주면에 테이프(T)가 래핑(wrapping)되어 주행되도록 하는 것이다.In the head drum device having the configuration as described above, the upper drum 1 and the hub drum 2 are driven so that the tape T is wrapped around the outer circumferential surface thereof.

그리고, 종래 기술에 의한 회전헤드드럼에 있어서는 하부드럼(2)의 형상이, 제2도에 도시되어 있는 바와 같이, 그 상단부가 내측으로 경사지게 형성되고, 상단부의 말단에는 말단협폭부(2')가 형성되어 있다.In the rotating head drum according to the related art, the shape of the lower drum 2 is formed such that its upper end is inclined inward, and the end narrow portion 2 'is formed at the end of the upper end as shown in FIG. Is formed.

또한, 헤드지지대(13)는 상부드럼(1)의 하면에 설치되는 것으로 그 상면에 헤드(7)가 취부된다. 이와 같은 헤드지지대(13)의 상기 헤드(7)가 취부된 부분의 하면은 경사지게 형성되어 있고, 일측에 고정공(13')이 천공되어 있다.In addition, the head support 13 is installed on the lower surface of the upper drum 1, and the head 7 is mounted on the upper surface thereof. The lower surface of the portion where the head 7 of the head support 13 is mounted is inclined, and a fixing hole 13 'is drilled on one side.

상기와 같이 하부드럼(2)의 상단부를 내측으로 경사지게 형성하고 그 말단부에 말단협폭부(2')를 형성하고 헤드(7)가 취부되어 있는 헤드지지대(13)의 하면을 경사지게 한 것은 이들 사이의 간섭을 피하도록 한 것이다.As described above, the upper end portion of the lower drum 2 is inclined inwardly, and the end narrow width portion 2 'is formed at the distal end thereof, and the lower surface of the head support 13 on which the head 7 is mounted is inclined therebetween. To avoid interference.

한편, 상부드럼(1)의 외주면을 가공하는 방식으로는, 제3도에 도시된 바와 같이, 상부드럼(1)의 상단부와 하단부의 반경을 동일하게 하여 가공하는 스트레이트 방식이 있다.On the other hand, as a method of processing the outer peripheral surface of the upper drum (1), as shown in Figure 3, there is a straight method for processing by making the upper and lower ends of the upper drum (1) the same radius.

그러나, 상기 스트레이트 방식으로 된 헤드드럼장치에서는 제3도의 (b)에 도시된 바와 같이, 상부드럼(1)의 하단 모서리부에 의한 습동저항(動抵抗)이 발생되고, 헤드창(1')의 존재에 의한 충격이 발생되는 문제점이 있다.However, in the straight-type head drum device, as shown in (b) of FIG. 3, the sliding resistance caused by the lower edge of the upper drum 1 There is a problem in that movement occurs and an impact caused by the presence of the head window 1 'occurs.

상기와 같은 스트레이트 방식의 문제점을 해결하기 위해, 제4도에 도시된 바와 같은, 슬랜트 스컷트(slant skirt)방식으로 드럼을 가공하게 된다. 즉, 상부드럼(1)의 상단부의 반경이 하단부의 반경보다 크도록 상부드럼(1)의 하단을 경사지게 가공하고, 상부드럼(1)와 하부드럼(2)간의 갭을 줄이기 위해 헤드(7)의 안착면보다 더 아래로 내려오도록 상부드럼(1)의 하단부에 스컷트부(1S)를 형성하는 것이다.In order to solve the problem of the straight method as described above, the drum is processed by a slant skirt method, as shown in FIG. That is, the lower end of the upper drum 1 is inclined so that the radius of the upper end of the upper drum (1) is greater than the radius of the lower end, and the head (7) to reduce the gap between the upper drum (1) and the lower drum (2) It is to form a cut portion (1S) at the lower end of the upper drum (1) so as to descend further than the seating surface.

그러나, 상기와 같이 슬랜트 스컷트방식으로 가공된 상부드럼(1)을 채용하더라도, 종래 기술에 의한 하부드럼(2)의 구조에 의하면 다음과 같은 문제점이 발생하게 된다.However, even if the upper drum 1 processed in the slit cut method is employed as described above, the following problems occur according to the structure of the lower drum 2 according to the prior art.

즉, 상기한 구성 설명에서 언급하였듯이, 헤드지지대(13)와 하부드럼(2) 사이의 간섭을 피하기 위한 상기 하부드럼(2)의 구성에 의하면, 하부드럼(2)의 말단협폭부(2')를 가공할 때, 바이트(bite)의 힘이, 제5도의 (a)에 도시된 바와 같이, 화살표(A) 방향으로 작용하게 되고, 이에 의해 각각의 모서리부(C)들에는 응력집중현상이 발생된다. 따라서 가공시에 상기 바이트의 힘에 의해 말단협폭부(2')가 점선으로 도시된 것같이 휘어지게 되고, 바이트가 하부드럼(2)의 하부를 가공하기 위해 이동되는 과정에서 상기 말단협폭부(2')의 탄성력이 상기 바이트의 힘에 비해 커지는 순간 탄성복원력에 의해 변형되면서 하부드럼(2)의 말단협폭부(2')가 소정의 길이(X)만큼 돌출된다. 이와 같이 돌출되는 길이는 비록 수㎛이지만, 상기와 같은 협폭말단부(2')의 돌출은, 제5도의 (b)에 도시된 바와 같이, 테이프(T)에 손상을 주고 테이프(T)의 주행성능을 떨어뜨리게 되는 문제점이 있다.That is, as mentioned in the above configuration description, according to the configuration of the lower drum 2 for avoiding the interference between the head support 13 and the lower drum 2, the terminal narrow portion 2 'of the lower drum 2 ), The force of the bite acts in the direction of the arrow A, as shown in FIG. 5 (a), whereby stress concentration occurs at each corner C. Is generated. Accordingly, the terminal narrow portion 2 'is bent as shown by the dotted line by the force of the bite at the time of machining, and the terminal narrow portion (in the process of moving the bite to process the lower portion of the lower drum 2) 2 ') is deformed by the elastic restoring force at the moment when the elastic force of the bite becomes larger than the force of the bite, and the terminal narrow portion 2' of the lower drum 2 protrudes by a predetermined length X. Although the protruding length is several 占 퐉, the protruding of the narrow end 2 'as described above damages the tape T as shown in (b) of FIG. 5 and the running of the tape T. There is a problem that degrades performance.

따라서, 본 고안의 목적은 상기와 같은 종래 기술의 문제점을 해결하기 위한 것으로, 자기기록재생기의 회전헤드드럼장치에서 발생되는 테이프의 손상을 방지하고, 헤드드럼상에서의 테이프의 주행성능을 개선하는 것이다.Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to prevent damage to the tape generated in the rotating head drum device of the magnetic recording and reproducing apparatus, and to improve the running performance of the tape on the head drum. .

상기와 같은 본 고안의 목적은 회전하는 상부드럼과 상기 상부드럼과 동축으로 설치된 하부드럼으로 구성된 회전헤드드럼장치에서, 상기 하부드럼의 테이프가 접촉되는 외주면의 두께를 거의 일정하게 형성하고, 헤드가 상면에 취부되어 상부실린더의 하면에 고정설치되는 헤드지지대의 말단부에 단을 형성하여 구성됨을 특징으로 하는 자기기록재생기의 회전 헤드드럼장치에 의해 달성된다.An object of the present invention as described above in the rotating head drum device consisting of a rotating upper drum and a lower drum coaxially with the upper drum, the thickness of the outer peripheral surface of the tape of the lower drum is in contact with almost constant, It is achieved by a rotating head drum device of a magnetic recording and reproducing apparatus, characterized in that a stage is formed at the distal end of the head support mounted on the upper surface and fixed to the lower surface of the upper cylinder.

상기 헤드지지대는 그 말단부에 단턱이 형성되어 헤드취부부측이 상부실린더고정측보다 얇게 형성됨을 특징으로 한다.The head support is characterized in that the stepped portion is formed in the distal end portion of the head mounting portion is formed thinner than the upper cylinder fixed side.

상기한 바와 같은 본 고안에 의한 자기기록재생기의 회전헤드드럼장치를 첨부된 도면에 도시된 실시예를 참고하여 상세히 설명하면 다음과 같다. 종래 기술의 것과 동일한 것은 동일부호를 부여하여 설명한다.When described in detail with reference to the embodiment shown in the accompanying drawings the rotating head drum device of the magnetic recording and reproducing apparatus according to the present invention as follows. The same as those of the prior art will be described with the same reference numerals.

제6도는 본 고안에 의한 회전헤드드럼장치의 구성을 도시한 단면도이고, 제7도는 본 고안에 의한 회전헤드드럼장치의 하부드럼의 구성을 도시한 도면으로, (a)는 평면도, (b)는 단면도이며, 제8도는 본 고안에 의한 회전헤드드럼장치의 헤드지지대의 구성을 도시한 단면도이다.6 is a cross-sectional view showing the configuration of the rotating head drum device according to the present invention, Figure 7 is a view showing the configuration of the lower drum of the rotating head drum device according to the present invention, (a) is a plan view, (b) 8 is a cross-sectional view, and FIG. 8 is a cross-sectional view showing the configuration of the head support of the rotating head drum device according to the present invention.

이에 도시된 바와 같이, 본 고안에 의한 자기기록재생기의 회전헤드드럼장치의 구성은 다음과 같다.As shown in the drawing, the configuration of the rotating head drum device of the magnetic recording and reproducing apparatus according to the present invention is as follows.

즉, 회전하는 상부드럼(1)과 상기 상부드럼(1)과 동축으로 설치된 하부드럼(20)으로 구성된 회전헤드드럼장치에서, 상기 하부드럼(20)의 테이프(T)가 접촉되는 외주면(21)의 두께를 거의 일정하게 형성하고, 헤드(7)가 상면에 취부되어 상부드럼(1)의 하면에 고정설치되는 헤드지지대(30)의 말단부에 단턱(31)을 형성하여 구성된다.That is, in the rotating head drum device consisting of a rotating upper drum 1 and a lower drum 20 coaxially installed with the upper drum 1, the outer peripheral surface 21 to which the tape T of the lower drum 20 is in contact ) Is formed to have a substantially constant thickness, and the head 7 is attached to the upper surface and is formed by forming a step 31 on the distal end of the head support 30 fixed to the lower surface of the upper drum 1.

상기 하부드럼(20)의 외주면(21)은, 제7도의 (b)에 상세히 도시된 바와 같이, 하부드럼(20)의 하단부에서부터 상단부까지 거의 일정한 두께를 가지도록 형성되어 하부드럼(20)의 가공시에 종래와 같은 탄성복원력등에 의한 돌출이 발생하지 않게 된다.The outer circumferential surface 21 of the lower drum 20 is formed to have a substantially constant thickness from the lower end to the upper end of the lower drum 20, as shown in detail in FIG. 7B. At the time of processing, the protrusion by the elastic restoring force as in the prior art does not occur.

상기 헤드지지대(30)는 그 말단부에 단턱(31)이 형성되어 헤드취부부측이 상부실린더고정측보다 얇게 형성된다. 이와 같이 헤드지지대(30)에 단턱(31)을 형성하는 것은 상기 하부드럼(20)의 외주면(21) 상단부와의 간섭을 방지하기 위한 것이다. 한편, 상기 헤드지지대(30)의 일측에는 헤드지지대(30)를 상부드럼(1)의 하면에 고정설치하기 위한 나사공(30')이 천공되어 있다.The head support 30 has a stepped portion 31 formed at its distal end, and the head mounting portion is formed thinner than the upper cylinder fixing side. As such, the step 31 is formed in the head support 30 to prevent interference with the upper end of the outer circumferential surface 21 of the lower drum 20. On the other hand, a screw hole 30 'for fixing the head support 30 to the lower surface of the upper drum 1 is drilled on one side of the head support 30.

상기와 같이 구성된 본 고안에 의한 자기기록재생기의 회전헤드드럼장치의 작용효과를 설명하면 다음과 같다.The operational effects of the rotating head drum device of the magnetic recording and reproducing apparatus according to the present invention configured as described above are as follows.

먼저, 본 고안에 의한 회전헤드드럼장치는 제6도에 도시된 바와 같이 조립되어 사용되며, 하부드럼(20)의 외주면(21) 상단부가 종래와는 달리 하단부와 거의 동일한 두께를 가지도록 형성되어 있어, 가공시 바이트의 힘에 의해 밀린 후 탄성복원력을 받게 되어 외측으로 돌출되는 것이 방지되므로 하부드럼(20)의 외주면(21)의 가공이 완벽하게 된다.First, the rotating head drum device according to the present invention is assembled and used as shown in FIG. 6, and the upper end of the outer circumferential surface 21 of the lower drum 20 is formed to have almost the same thickness as the lower end unlike the prior art. Therefore, after being pushed by the force of the bite during processing is subjected to the elastic restoring force is prevented from protruding to the outside, the processing of the outer peripheral surface 21 of the lower drum 20 is perfect.

따라서, 본 고안에 의한 장치에 의하면 하부드럼(20)의 외주면(21)에 종래와는 달리 돌출부가 존재하지 않아 테이프(T)가 손상되는 것이 방지되고, 따라서 테이프(T)의 손상에 의한 이물발생이 배제되며, 하부드럼(20)의 외주면(21) 가공이 완변하게 이루어져 종래와 같이 하부드럼(20)의 상단에 테이프주행 부하가 집중되는 것이 방지된다.Therefore, according to the device according to the present invention, unlike the prior art, the projection T does not exist on the outer circumferential surface 21 of the lower drum 20, thereby preventing the tape T from being damaged, and thus, the foreign matter caused by the damage of the tape T. Occurrence is excluded, and the outer peripheral surface 21 of the lower drum 20 is completely processed to prevent the concentration of the tape running load on the upper end of the lower drum 20 as in the prior art.

위에서 상세히 설명한 바와 같은 본 고안에 의한 자기기록재생기의 회전헤드드럼장치는 종래 기술에서 불가피하게 발생되던 하부드럼 상단의 돌출부가 발생되지 않아 테이프의 손상이나, 이와 같은 손상에 의한 이물로 화질이 떨어지는 것이 방지되며, 하부드럼의 외주면이 완벽하게 형성되므로 종래와는 달리 하부드럼의 말단부에 부하가 집중되는 것이 방지되어 테이프 주행성능이 향상되는 효과가 있다.The rotating head drum device of the magnetic recording and reproducing apparatus according to the present invention as described in detail above does not generate projections on the upper part of the lower drum, which is inevitably generated in the prior art, so that the image quality is deteriorated due to the damage of the tape or the foreign matter caused by such damage. Since the outer circumferential surface of the lower drum is completely formed, the load is prevented from being concentrated at the distal end of the lower drum unlike the conventional art, and thus the tape running performance is improved.

Claims (2)

회전하는 상부드럼과 상기 상부드럼과 동축으로 설치된 하부드럼으로 구성된 회전헤드드럼장치에서, 상기 하부드럼의 테이프가 접촉되는 외주면의 두께를 거의 일정하게 형성하고, 헤드가 상면에 취부되어 상부실린더의 하면에 고정설치되는 헤드지지대의 말단부에 단을 형성하여 구성됨을 특징으로 하는 자기기록재생기의 회전헤드드럼장치.In the rotating head drum device consisting of a rotating upper drum and a lower drum installed coaxially with the upper drum, the thickness of the outer circumferential surface of the lower drum in contact with the tape is almost constant, and the head is mounted on the upper surface so that the lower surface of the upper cylinder Rotating head drum device of the magnetic recording and reproducing apparatus, characterized in that the end is formed at the end of the head support fixed to the. 제1항에 있어서, 상기 헤드지지대는 그 말단부에 단턱이 형성되어 헤드취부부측이 상부실린더고정측보다 얇게 형성됨을 특징으로 하는 자기기록재생기의 회전헤드드럼장치.The rotating head drum device of a magnetic recording and reproducing apparatus according to claim 1, wherein the head support has a stepped portion formed at a distal end thereof, and the head mounting portion is formed thinner than the upper cylinder fixing side.
KR2019950032111U 1995-11-02 1995-11-02 Rotary head drum apparatus of magnetic recording and reproducing apparatus KR0130230Y1 (en)

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KR0130230Y1 true KR0130230Y1 (en) 1998-12-15

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