KR0135853B1 - Rotary magnetic head drum structure - Google Patents

Rotary magnetic head drum structure

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Publication number
KR0135853B1
KR0135853B1 KR1019930011723A KR930011723A KR0135853B1 KR 0135853 B1 KR0135853 B1 KR 0135853B1 KR 1019930011723 A KR1019930011723 A KR 1019930011723A KR 930011723 A KR930011723 A KR 930011723A KR 0135853 B1 KR0135853 B1 KR 0135853B1
Authority
KR
South Korea
Prior art keywords
circumferential surface
drum
magnetic head
bushing member
rotating
Prior art date
Application number
KR1019930011723A
Other languages
Korean (ko)
Other versions
KR950001611A (en
Inventor
구자염
Original Assignee
김광호
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자주식회사 filed Critical 김광호
Priority to KR1019930011723A priority Critical patent/KR0135853B1/en
Publication of KR950001611A publication Critical patent/KR950001611A/en
Application granted granted Critical
Publication of KR0135853B1 publication Critical patent/KR0135853B1/en

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Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00Driving, 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
    • G11B15/60Guiding record carrier
    • G11B15/61Guiding record carrier on drum, e.g. drum containing rotating heads
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00Driving, 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
    • G11B15/60Guiding record carrier
    • G11B15/66Threading; Loading; Automatic self-loading
    • G11B15/665Threading; Loading; Automatic self-loading by extracting loop of record carrier from container
    • G11B15/6653Threading; Loading; Automatic self-loading by extracting loop of record carrier from container to pull the record carrier against drum
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/52Disposition 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
    • G11B5/53Disposition or mounting of heads on rotating support
    • G11B5/531Disposition of more than one recording or reproducing head on support rotating cyclically around an axis

Abstract

본 발명은 별도의 측정장비없이도 회전 자기헤드 드럼을 간단하게 동심을 유지하면서 조립할 수 있도록 개량된 회전 자기헤드 드럼구조체에 대해 개시한다. 본 발명 회전 자기헤드 드럼구조체는 상부회전드럼과 축 부쉬부재에 각각 상호 접촉되는 테이퍼면을 가지도록 형성된다. 이러한 본 발명은 회전드럼을 부쉬에 나사 조립시 동심을 유지하면서 간단하게 조립될 수 있다.The present invention discloses a rotating magnetic head drum structure that has been improved to assemble a rotating magnetic head drum simply and concentrically without a separate measuring device. The rotating magnetic head drum structure is formed to have a tapered surface that is in contact with the upper rotating drum and the shaft bush member, respectively. The present invention can be simply assembled while maintaining the concentric when assembling the rotating drum in the bush.

Description

회전 자기헤드 드럼 구조체Rotating magnetic head drum structure

제1도는 종래 회전 자기헤드드럼을 개략적으로 나타낸 단면도,1 is a cross-sectional view schematically showing a conventional rotating magnetic head drum,

제2도는 제1도의 요부 확대도,2 is an enlarged view of the main portion of FIG.

제3도는 제1도의 요부 발췌도 사시도,3 is a perspective view of the main portion excerpts

제4도는 본 발명에 따른 회전 자기헤드 드럼을 개략적으로 나타낸 단면도,4 is a cross-sectional view schematically showing a rotating magnetic head drum according to the present invention,

제5도는 제4도의 요부 확대도,5 is an enlarged view of the main portion of FIG.

제6도는 본 발명에 따른 회전 자기헤드 드럼의 다른 실시예,6 is another embodiment of a rotating magnetic head drum according to the present invention,

제7도는 제6도의 실시예에 있어서의 사시도이다.FIG. 7 is a perspective view of the embodiment of FIG.

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

11... 회전드럼12... 고정드럼11 ... rotating drum 12 ... fixed drum

13... 축14... 자기헤드13 ... axis 14 ... magnetic head

15... 나사16... 부쉬부재15 ... Screw 16 ... Bushing member

본 발명은 회전자기 헤드드럼 구조체에 관한 것으로서, 특히 자기헤드가 설치되어 회전되는 회전드럼을 축 부쉬부재에 조립할시 별도의 측정장비없이 자동조심(自動調心)되도록 그 구조를 개량한 회전 자기 헤드드럼 구조체에 관한 것이다.The present invention relates to a rotating magnetic head drum structure, and in particular, a rotating magnetic head having an improved structure so as to be self-aligned without additional measuring equipment when assembling the rotating drum in which the magnetic head is installed and rotated on the shaft bushing member. A drum structure.

일반적으로 VTR등의 테이프 레코더에는 주행하는 테이프로부터 정보를 독취하거나 또는 그 테이프에 정보를 기록하기 위해 그 테이프의 주행방향에 대해 경사상으로 스캐닝하는 회전자기 헤드드럼이 설치되어 있다. 이러한 테이프 레코더에 있어서, 고밀도/고정도로 정보의 기록/재생을 위해서는 상기 테이프의 주행속도 및 회전자기 헤드드럼의 회전속도가 정확히 조절되어야 할 뿐만아니라, 회전자기 헤드드럼 자체 또한 정밀하게 조립되어야 한다.In general, a tape recorder such as a VTR is provided with a rotating magnetic head drum for scanning information inclined with respect to the running direction of the tape in order to read information from or record information on the running tape. In such a tape recorder, not only the running speed of the tape and the rotational speed of the rotating magnetic head drum must be precisely adjusted, but also the rotating magnetic head drum itself must be precisely assembled in order to record / reproduce information with high density / precision.

제1도는 종래의 회전자기 헤드드럼을 개략적으로 나타내고, 제2도는 제1도의 요부 확대도이고, 제3도는 제1도의 요부 발췌 사시도이다. 이 회전 자기헤드드럼(8)은 드럼베이스(미도시)에 고정되는 고정드럼(2)과, 부쉬부재(6)가 압입설치되고 미도시된 구동모터와 연결설치되는 축(3)과, 그 부쉬부재(6)에 안내되어 나사(5)고정되며 자기헤드(4)가 설치된 회전드럼(1)으로 구성된다.FIG. 1 schematically shows a conventional rotating magnetic head drum, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a perspective view of the main part of FIG. The rotating magnetic head drum (8) includes a fixed drum (2) fixed to a drum base (not shown), a shaft (3) in which a bushing member (6) is press-installed and connected to a drive motor (not shown), and It is composed of a rotating drum (1) guided to the bushing member (6) and fixed with screws (5) and with a magnetic head (4).

상기 고정드럼(2)과 축(3)사이에는 베어링(7)이 설치되어 있으며, 상기 회전드럼(1)은 구동모터의 회전으로 회전구동된다. 이러한 회전자기헤드드럼(8)에 있어서, 상기 회전드럼(1)의 내주면(1')은 측정장비를 이용하여 1-5㎛ 정도의 오차로 정교하게 다듬질되고, 이 회전드럼(1)이 결합되는 상기 부쉬부재(6)의 외주면(6')은 축(3)과 동심을 유지하면서 -0.5㎛ 내지 -4.5㎛ 정도로 다듬질되어 있다. 그리고 이 회전드럼(1)은 부쉬부재(6)에 결합된 뒤 나사(5) 고정된다.A bearing 7 is installed between the fixed drum 2 and the shaft 3, and the rotary drum 1 is driven by rotation of the drive motor. In this rotating magnetic head drum (8), the inner circumferential surface (1 ') of the rotating drum (1) is finely trimmed with an error of about 1-5㎛ using a measuring device, the rotating drum (1) is coupled The outer circumferential surface 6 ′ of the bush member 6 is trimmed to about −0.5 μm to −4.5 μm while maintaining concentricity with the shaft 3. The rotating drum 1 is then coupled to the bushing member 6 and fixed to the screw 5.

그런데, 이와 같이 회전자기 헤드드럼(8)을 조립할 시에 회전드럼(1)과 부쉬부재(6)는 틈새를 가지고 다듬질되어 있으므로 나사(5) 조립시 한측으로 편위되어 조립되므로 별도의 측정장비를 이용하여 축(3)과 동심을 유지하도록 하면서 조립해야하는 번거로움 및 이에 따른 조립시간이 많이 소요되는 문제점이 있다.However, when assembling the rotating magnetic head drum (8), the rotating drum (1) and the bush member (6) are trimmed with a gap, so when the assembly of the screw (5) is biased and assembled to one side, a separate measuring device is used. There is a problem in that the hassle to be assembled while maintaining the concentric with the shaft (3) and accordingly takes a lot of assembly time.

본 발명은 상기의 문제점을 해결하기 위하여 안출된 것으로서, 회전 자기헤드드럼을 조립시 별도의 측정장비를 이용치 않고 축과 동심을 유지하면서 조립할 수 있도록 그 구조가 개량된 회전 자기헤드드럼 구조체를 제공하는데 그 목적이 있는 것이다.The present invention has been made to solve the above problems, and provides a rotating magnetic head drum structure of which the structure is improved so that the rotating magnetic head drum can be assembled while maintaining concentricity with the shaft without using a separate measuring device. The purpose is to.

상기 목적을 달성하기 위하여 본 발명은 하부고정드럼을 관통하여 베어링 지지된 구동축이 부쉬부재부재에 압입되고, 그 부쉬부재에 상부회전드럼이 결합되는 회전자기 헤드드럼 구조체에 있어서,In order to achieve the above object, the present invention provides a rotating magnetic head drum structure in which a drive shaft supported through a lower fixed drum is pressed into a bush member member, and an upper rotary drum is coupled to the bush member.

상기 부쉬부재는 일정한 직경의 원주면과 이 원주면 상단의 테이퍼형 외주면을 가지고, 상기 상부회전드럼은 그 내주면이 사기 부쉬부재의 원주면과 대응하는 원주면과 상기 부쉬부재의 테이퍼형 외주면과 대응하는 테이프형 내주면을 가지도록 형성된 것을 특징으로 한다.The bushing member has a circumferential surface having a constant diameter and a tapered outer circumferential surface at the top of the circumferential surface, and the upper rotating drum corresponds to a circumferential surface whose inner circumferential surface corresponds to the circumferential surface of the fraud bush member and the tapered outer circumferential surface of the bushing member. It characterized in that formed to have a tape-shaped inner peripheral surface.

본 발명의 특징에 의하면, 상기 상부회전드럼을 부쉬부재에 결합하게 되면 상호 대응하는 상부회전드럼의 테이퍼형 내주면과 부쉬부재의 테이퍼형 외주면이 접촉되고, 상기 나사를 조이면 상부회전드럼은 나사의 추력에 의해서 상부회전드럼의 테이퍼형 주면이 부쉬부재의 테이퍼형 외주면에 슬라이딩되면서 축과 동심을 유지하면서 조립될 수 있게 된다.According to a feature of the present invention, when the upper rotating drum is coupled to the bushing member, the tapered inner circumferential surface of the corresponding upper rotating drum and the tapered outer circumferential surface of the bushing member contact each other, and the upper rotating drum is the thrust of the screw when the screw is tightened. By the tapered main surface of the upper rotary drum sliding to the tapered outer peripheral surface of the bushing member can be assembled while maintaining the concentric with the shaft.

이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제4도는 본 발명에 따른 회전 자기헤드드럼을 개략적으로 나타낸 단면도이고, 제5도는 본 발명에 따른 회전 자기헤드 드럼의 요부 확대도 단면도이고, 제6도는 본 발명에 따른 회전 자기헤드드럼의 다른 실시를 나타낸 요부 확대 단면도이고, 제7도는 제6도의 실시에 있어서의 회전 자기헤드 드럼의 요부 발췌사시도이다. 제4도 및 제5도를 참조하면, 회전 자기헤드 드럼(18)은 드럼베이스(미도시)에 고정되는 하부고정드럼(12)과, 부쉬부재(16)가 압입설치되고 미도시된 구동모터와 연결설치되는 축(13)과, 그 부쉬부재(16)에 압입되어 나사(15)고정되며 자기헤드(14)가 설치된 상부회전드럼(11)으로 구성된다. 그리고 상기 하부고정드럼(12)과 축(13)사이에는 베어링(17)이 설치되어 있으며, 상기 상부회전드럼(11)은 구동모터의 회전으로 회전구동된다.4 is a sectional view schematically showing a rotating magnetic head drum according to the present invention, FIG. 5 is an enlarged sectional view showing main parts of the rotating magnetic head drum according to the present invention, and FIG. 6 is another embodiment of the rotating magnetic head drum according to the present invention. Fig. 7 is an enlarged cross-sectional view showing main parts, and Fig. 7 is an exploded perspective view showing the main parts of the rotating magnetic head drum in the embodiment of Fig. 6. 4 and 5, the rotating magnetic head drum 18 includes a lower fixed drum 12 fixed to a drum base (not shown) and a bushing member 16 press-fitted to a driving motor. It is composed of a shaft (13) connected to the installation and the upper rotating drum (11) is pressed into the bushing member (16), the screw (15) is fixed and the magnetic head (14) is installed. And a bearing 17 is installed between the lower fixed drum 12 and the shaft 13, the upper rotary drum 11 is driven to rotate by the rotation of the drive motor.

여기서 상기 부쉬부재(16)는 테이퍼형 외주면(32)과 이로부터 연장되는 원주면(31)을 가지도록 형성하였으며, 상기 회전드럼(11)은 그 내주면이 상기 부쉬부재(16)의 원주면(31)과 대응하는 원주면(21)과 상기 부쉬부재(16)의 테이퍼형 외주면(32)과 대응하는 테이퍼형 내주면(22)을 가지도록 형성하였다. 상기 각 회전드럼(11) 및 부쉬부재(16)의 각 테이퍼 축중심은 상기 축(13)과 동심(童心)을 이룬다.Here, the bushing member 16 has a tapered outer circumferential surface 32 and a circumferential surface 31 extending therefrom, and the rotating drum 11 has an inner circumferential surface of the bushing member 16. 31 and a tapered inner circumferential surface 22 corresponding to the circumferential surface 21 and the tapered outer circumferential surface 32 of the bushing member 16. Each tapered shaft center of each of the rotating drums 11 and the bushing member 16 is concentric with the shaft 13.

이와 같이 형성된 회전 자기헤드드럼을 조립할 때, 상부회전드럼(11)의 원주면(21)을 부쉬부재(16)의 원주면(31)에 결합시킨후 나사(15)로 조이면, 상부회전드럼(11)의 테이퍼형 내주면(22)이 부쉬부재(16)의 테이퍼형 외주면(32)에 슬라이딩 되면서 밀착되어 결합된다. 이 때 상부회전드럼(11)의 테이퍼형 내주면(22)과 부쉬부재(16)의 테이퍼형 외주면(32)은 각 테이퍼 중심축들이 축(13)과 동심으로 가공되어 있기 때문에 상부회전드럼(11)의 테이퍼형 내주면(22)이 부쉬부재(16)의 테이퍼형 외주면(32)에 슬라이딩될 때 항상 축(13)과 동심을 이루고 동시에 나사(15)의 추력에 의한 작용력이 부쉬부재(16)의 테이퍼형 외주면(32)에 균일하게 작용하여 상부회전드럼(11)이 부쉬부재(16)와 동심을 이루면서 조립되게 된다.When assembling the rotating magnetic head drum formed as described above, if the circumferential surface 21 of the upper rotating drum 11 is coupled to the circumferential surface 31 of the bushing member 16 and then tightened with screws 15, the upper rotating drum ( The tapered inner circumferential surface 22 of 11) slides to the tapered outer circumferential surface 32 of the bushing member 16 to be in close contact with each other. At this time, the tapered inner circumferential surface 22 of the upper rotating drum 11 and the tapered outer circumferential surface 32 of the bushing member 16 have the upper rotating drum 11 because the central tapered axes are machined concentrically with the shaft 13. When the tapered inner circumferential surface 22 of the slide member is slid to the tapered outer circumferential surface 32 of the bushing member 16, the tapered inner circumferential surface 22 is always concentric with the shaft 13, and at the same time, the action force due to the thrust of the screw 15 is applied to the bushing member 16. By uniformly acting on the tapered outer circumferential surface of 32, the upper rotary drum 11 is assembled while concentric with the bush member 16.

한편, 본 발명의 다른 실시예로서, 제6도 내지 제7도를 참조하면, 상기 상부회전드럼(11)의 테이퍼형 내주면(22)에 상기 부쉬부재(16)의 테이퍼형 외주면(32)에 접촉하는 환형의 리브(22')를 형성하였다. 환형의 리브(22') 또한 축(13)과 동심을 이루도록 다듬질되어 있다. 조립시 상부회전드럼(11)의 환형 리브(22')는 나사(15)조임에 의한 추력으로 부쉬부재(16)의 테이퍼형 외주면(32)에 균일하게 작용력을 가하게 된다. 따라서 상부회전드럼(11)은 축(13)과 동심을 유지하면서 조립되게 된다.Meanwhile, as another embodiment of the present invention, referring to FIGS. 6 to 7, the tapered inner circumferential surface 22 of the upper rotating drum 11 is connected to the tapered outer circumferential surface 32 of the bushing member 16. An annular rib 22 'in contact was formed. The annular rib 22 'is also trimmed to be concentric with the shaft 13. During assembly, the annular rib 22 'of the upper rotating drum 11 exerts a uniform acting force on the tapered outer circumferential surface 32 of the bushing member 16 by thrust by tightening the screw 15. Therefore, the upper rotary drum 11 is assembled while maintaining the concentric with the shaft (13).

이상에서 설명한 바와 같이 종래 회전드럼(1)과 부쉬부재(6)는 상호접촉되는 이들 내,외주면이 틈새를 가지고 다듬질되어 있으므로 나사(5) 조립시 한측으로 편위되어 조립되는 것을 방지하기 위하여 별도의 측정장비를 이용하여 축(3)과 동심을 유지하도록 하면서 조립해야하는 번거로움 및 이에 따른 조립시간이 많이 소요되는 문제점이 있었던 반면에, 본 발명에 따른 회전 자기헤드 드럼은 부쉬부재(16)와 이에 결합되는 회전드럼(11)을 각각 테이퍼형으로 형성함으로써 조립시 별도의 측정장비를 사용하지 않고도 회전드럼(11)이 축(13)과 동심을 유지하면서 조립할 수 있게 된다.As described above, the conventional rotating drum 1 and the bushing member 6 are trimmed with gaps between the inner and outer circumferential surfaces of the rotating drum 1 and the bushing member 6 so as to prevent the assembly of the screw 5 in order to prevent the assembly. While there was a problem that the assembly and the assembly time is required while maintaining the concentric with the shaft (3) using the measuring equipment, the rotating magnetic head drum according to the present invention is a bush member 16 and By forming the rotating drum 11 to be tapered, respectively, it is possible to assemble the rotating drum 11 while maintaining concentricity with the shaft 13 without using a separate measuring device during assembly.

상술한 바와 같이 본 발명은 작업공수 및 조립성 향상에 효과적인 것이다.As described above, the present invention is effective for improving workmanship and assembly.

Claims (2)

하부고정드럼을 관통하여 베어링 지지된 구동축이 부쉬부재에 압입되고, 그 부쉬부재에 상부회전드럼이 결합되는 회전자기 헤드드럼 구조체에 있어서,In a rotating magnetic head drum structure in which a drive shaft supported by a bearing through a lower fixed drum is pressed into a bushing member, and an upper rotating drum is coupled to the bushing member. 상기 부쉬부재는 일정한 직경의 원주면과 이 원주면 상단의 테이퍼형 외주면을 가지고, 상기 상부회전드럼은 그 내주면이 상기 부쉬부재의 원주면과 대응하는 원주면과 상기 부쉬부재의 테이펴형 외주면과 대응하는 테이퍼형 내주면을 가지도록 형성된 것을 특징으로 하는 회전자기 헤드드럼구조체.The bushing member has a circumferential surface having a constant diameter and a tapered outer circumferential surface at the upper end of the circumferential surface, and the upper rotary drum corresponds to a circumferential surface whose inner circumferential surface corresponds to the circumferential surface of the bushing member and a tapered outer circumferential surface of the bushing member. A rotating magnetic head drum structure, characterized in that it is formed to have a tapered inner peripheral surface. 제1항에 있어서,The method of claim 1, 상기 상부회전드럼의 테이퍼형 내주면에 상기 부쉬부재의 테이퍼형 외주면에 접촉하는 환형의 리브가 형성된 것을 특징으로 하는 회전 자기헤드드럼 구조체.A rotating magnetic head drum structure, characterized in that an annular rib is formed on the tapered inner circumferential surface of the upper rotating drum to contact the tapered outer circumferential surface of the bushing member.
KR1019930011723A 1993-06-25 1993-06-25 Rotary magnetic head drum structure KR0135853B1 (en)

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KR0135853B1 true KR0135853B1 (en) 1998-05-15

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