KR930003679Y1 - Magnetic recording/reproducing head drum - Google Patents

Magnetic recording/reproducing head drum Download PDF

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Publication number
KR930003679Y1
KR930003679Y1 KR2019910000748U KR910000748U KR930003679Y1 KR 930003679 Y1 KR930003679 Y1 KR 930003679Y1 KR 2019910000748 U KR2019910000748 U KR 2019910000748U KR 910000748 U KR910000748 U KR 910000748U KR 930003679 Y1 KR930003679 Y1 KR 930003679Y1
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KR
South Korea
Prior art keywords
drum
magnetic recording
head
washer
rotating shaft
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KR2019910000748U
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Korean (ko)
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KR920015548U (en
Inventor
서준석
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삼성전자 주식회사
강진구
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Priority to KR2019910000748U priority Critical patent/KR930003679Y1/en
Publication of KR920015548U publication Critical patent/KR920015548U/en
Application granted granted Critical
Publication of KR930003679Y1 publication Critical patent/KR930003679Y1/en

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    • 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
    • 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
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Support Of The Bearing (AREA)

Abstract

내용 없음.No content.

Description

테이프 레코더의 자기기록/재생용 헤드드럼Head drum for magnetic recording / playback of tape recorders

제1도는 종래 테이프레코더의 자기기록/재생용 헤드드럼에 도시한 입단면도.1 is a cross-sectional view showing a conventional head recorder for magnetic recording / playback of a tape recorder.

제2도는 본 고안에 따른 테이프레코더의 자기기록/재생용 헤드드럼을 개략적으로 도시한 것으로서, 제2a도는 입단면도이고, 제2b도는 제2a도에 도시된 A부분을 발췌하여 도시한 분리사시도.2 is a schematic diagram illustrating a magnetic recording / reproducing head drum of a tape recorder according to the present invention. FIG. 2A is a cross-sectional view, and FIG. 2B is an exploded perspective view showing a portion A shown in FIG. 2A.

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

11 : 회전축 12 : 상부드럼11: axis of rotation 12: upper drum

12a : 헤드 13 : 하부드럼12a: head 13: lower drum

13b : 하부베어링 14 : 드럼모우터13b: lower bearing 14: drum motor

17 : 와셔 18 : 댐퍼링17 washer 18: damper ring

본 고안은 테이프레코더의 자기기록/재생용 헤드드럼에 관한 것이다.The present invention relates to a head drum for magnetic recording / playback of a tape recorder.

통상적인 테이프레코더의 자기기록/재생용 헤드드럼은 제1도에 나타낸 보인 바와 같이 회전축(2)에 의해 지지되며 그 저면에 헤드(3a)가 설치된 상부드럼(3)과, 상기 상부드럼(3)의 회전축(2)이 결합되는 상하부 베어링(4a)(4b)이 설치된 하부드럼(4)과, 상기 하부드럼(4)의 하면에 설치되어 상기 하부드럼(4)으로부터 소정길이 돌출된 상기 회전축(2)을 회전시키는 드럼모두터(5)를 구비하여 구성된다. 여기에서 상기 드럼모우터(5)는 그 스테이터(5a)가 하부드럼(4)에 고정설치되고 그 로터(5b)는 상기 하부드럼(4)으로부터 소정길이 돌출된 회전축(2)에 삽입되어 그 일측이 하부베어링(4b)의 내륜과 접촉되는 예압보스(5c)에 의해 회전축(2)에 고정된다. 그리고 상기 회전축(2)의 상단부 또는 하단부에는 상기 자기기록 및 재생장치를 데크에 접지시킴과 아울러 상부드럼(3)의 회전위치를 제어하는 즉, 상부드럼이 소망하는 정지위치에서 역회전하는 것을 방지하기 위하여 회전축(2)에 소정의 프리로드(pre load)를 걸어주는 헤드브러쉬(6)가 소정의 탄성력으로 접촉된다.The head drum for magnetic recording / playback of a conventional tape recorder is supported by a rotating shaft 2, as shown in FIG. 1, and an upper drum 3 provided with a head 3a on its bottom, and an upper drum 3. And a lower drum 4 provided with upper and lower bearings 4a and 4b to which the rotating shaft 2 of the upper and lower shafts 4 are coupled, and the rotating shaft protruding a predetermined length from the lower drum 4 by being installed on a lower surface of the lower drum 4. It is comprised by the drum both 5 which rotates (2). Here, the drum motor 5 has its stator 5a fixedly installed on the lower drum 4, and the rotor 5b is inserted into the rotating shaft 2 protruding a predetermined length from the lower drum 4, One side is fixed to the rotation shaft 2 by a preload boss 5c in contact with the inner ring of the lower bearing 4b. In addition, at the upper end or the lower end of the rotary shaft 2, the magnetic recording and reproducing apparatus is grounded to the deck, and the rotation position of the upper drum 3 is controlled, that is, the upper drum is prevented from rotating in the desired stop position. For this purpose, the head brush 6 which applies a predetermined preload to the rotating shaft 2 is contacted with a predetermined elastic force.

이와 같이 구성된 종래 테이프레코더의 자기기록/재생용 헤드드럼(1)은 상기 드럼모우터(5)에 의해 헤드(3a)가 설치된 상부드럼(3)이 회전하면서 테이프에 자기기록 또는 재생작업을 수행하게 된다. 이때에 상기 테이프에 정확한 자기기록 및 재생작업을 수행하기 위해서는 상기 헤드(3a)의 정지위치 및 회전위치가 정확하여야 하는데 상기 헤드브러쉬(6)로서 회전축(2)에 가하여 주는 로드만으로 이를 정확하게 제어할 수가 없었다. 또한 상기 헤드브러쉬(6)는 그 일측 단부가 데크에 고정되고 그 타측 단부가 회전축(2)에 접촉되게 되어 있으므로 구조가 복잡해지는 문제점이 있었다.The magnetic drum recording / reproducing head drum 1 of the conventional tape recorder configured as described above performs the magnetic recording or reproducing operation on the tape while the upper drum 3 on which the head 3a is installed is rotated by the drum motor 5. Done. In this case, in order to perform accurate magnetic recording and reproducing operation on the tape, the stop position and the rotation position of the head 3a should be accurate, and only the rod applied to the rotating shaft 2 as the head brush 6 can accurately control it. I could not. In addition, the head brush 6 has a problem that the structure is complicated because one end is fixed to the deck and the other end is in contact with the rotating shaft (2).

본 고안은 상기 문제점을 해결하기 위해 안출된 것으로서, 별도의 헤드브러쉬 없이 상부드럼을 지지하는 회전축에 프리로드를 가하여 상기 상부드럼을 소정의 위치에서 고정할 수 있는 카세트레코더의 자기기록/재생용 헤드드럼을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, the magnetic recording / reproducing head of the cassette recorder that can fix the upper drum at a predetermined position by applying a preload to the rotating shaft supporting the upper drum without a separate head brush The purpose is to provide a drum.

상기 목적을 달성하기 위하여 본 고안은 하부드럼과, 하부드럼의 상하부 베어링에 의해 그 회전축이 지지되는 상부드럼과, 하부드럼으로부터 돌출된 회전축에 삽입되며 드럼모우터의 로터를 지지하는 예압보스를 구비하여 된 테이프레코더의 자기기록/재생용 헤드드럼에 있어서, 상기 하부베어링을 오일레스베어링으로 설치하고 이 오일레스베어링과 예압보스 사이에는 와셔와 댐퍼링을 순차적으로 개재시켜 된 것을 특징으로 한다.In order to achieve the above object, the present invention includes a lower drum, an upper drum supported by the upper and lower bearings of the lower drum, and a preload boss inserted into the rotating shaft protruding from the lower drum and supporting the rotor of the drum motor. In the head drum for magnetic recording / reproducing of a tape recorder, the lower bearing is provided with an oilless bearing, and a washer and a damper ring are sequentially interposed between the oilless bearing and the preload boss.

이하 첨부된 도면을 참조하여 본 고안에 따른 한 바람직할 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제2도에 나타내 보인 본 고안에 따른 카세트테이프레코더의 자기기록/재생용 헤드드럼(10)은 회전축(11)에 의해 지지되며 그 하면에 헤드(12a)가 설치된 상부드럼(12)과 상기 상부드럼(12)의 회전축(11)이 지지되는 상하부 베어링(13a)(13b)과 그 하면에 드럼모우터(14)의 스테이터(14a)가 설치된 하부드럼(13)과 상기 하부드럼(13)의 하부로부터 소정길이 돌출되어 하부베어링(13b)과 접촉됨과 아울러 상기 드럼모우터(14)의 로터(14b)를 지지하는 예압보스(14c)를 구비하여 구성되는데, 상기 하부베어링(13b)과 예압보스(14c)사이에는 본 고안의 특징에 따라 와셔(17)와 댐퍼링(18)이 순차적으로 개재되어 있다.The magnetic drum recording / reproducing head drum 10 of the cassette tape recorder according to the present invention shown in FIG. 2 is supported by a rotating shaft 11 and has an upper drum 12 provided with a head 12a on its lower surface. The upper and lower bearings 13a and 13b on which the rotating shaft 11 of the drum 12 is supported, and the lower drum 13 and the lower drum 13 provided with the stator 14a of the drum motor 14 on the lower surface thereof. It is provided with a preload boss 14c supporting a rotor 14b of the drum motor 14 as well as being in contact with the lower bearing 13b by protruding a predetermined length from the lower part. The lower bearing 13b and the preload boss are provided. Between the 14c, the washer 17 and the damper ring 18 are sequentially interposed according to the feature of the present invention.

이때에 상기 하부베어링(13b)은 오일레스베어링을 사용함이 바람직하며 상기 댐퍼링(18)과 접촉되는 와셔(17)의 하면을 너어링가공함이 바람직하고 상기 오일레스베어링과 접촉되는 와셔의 상면은 정삭가공하여 그 표면조도를 매우 좋게 함이 바람직하다.At this time, the lower bearing (13b) is preferably using an oilless bearing, and the lower surface of the washer (17) in contact with the damper ring (18) is preferably to knuckle the upper surface of the washer in contact with the oilless bearing. Silver is preferably finished to make the surface roughness very good.

이와 같이 구성된 카세트테이프레코더의 자기기록/재생용 헤드드럼(10)는 상기 드럼모우터(14)에 의해 회전축(11)이 회전하게 됨으로써 이 회전축(11)에 지지된 상부드럼(12)이 회전하게 되어 테이프에 자기기록 및 재생작업을 수행하게 되는데, 상기 예압보스(14c)와 하부베어링(13b)인 오일레스베어링 사이에는 와셔(17)와 댐퍼링(18)이 상기 하부 베어링(13b)으로부터 순차적으로 삽입되어 있으므로 상기 상부드럼(12)이 정지할 때에 역회전되는 것을 방지할 수 있다. 즉, 상기 너어링가공된 면이 댐퍼링(18)에 의해 지지된 와셔(17)의 마찰력에 의해 상기 상부드럼(12)의 회전력에 대해 소정의 로드를 가하게 된다. 따라서 상기 상부드럼(12)이 정지할 때에 상부드럼(12)이 역회전하는 것을 방지할 수 있게 되는 것이다.In the magnetic tape recording / reproducing head drum 10 configured as described above, the rotating shaft 11 is rotated by the drum motor 14 so that the upper drum 12 supported by the rotating shaft 11 rotates. The magnetic recording and reproducing operation is performed on the tape, and the washer 17 and the damper ring 18 are separated from the lower bearing 13b between the preload boss 14c and the oilless bearing which is the lower bearing 13b. Since the upper drum 12 is inserted in sequence, it is possible to prevent the reverse rotation when the upper drum 12 is stopped. In other words, the knurled surface applies a predetermined load to the rotational force of the upper drum 12 by the frictional force of the washer 17 supported by the damper ring 18. Therefore, it is possible to prevent the upper drum 12 from rotating in reverse when the upper drum 12 is stopped.

이와 같이 본 고안 카세트테이프레코더에 자기기록/재생용 헤드드럼은 와셔와 오일레스베어링과의 마찰력에 의해 상부드럼의 회전축에 프리로드가 걸리도록 되어 있으므로 상부드럼의 정지시 역회전하는 것을 방지할 수 있으며 종래와 같은 헤드브러쉬가 불필요하게 되어 그 구조를 간편하게 할 수 있는 이점이 있다.As described above, the head drum for magnetic recording / reproducing of the cassette tape recorder of the present invention is preloaded on the rotating shaft of the upper drum by the frictional force between the washer and the oilless bearing, so that the rotating drum of the upper drum can be prevented from rotating in reverse. And there is an advantage that the head brush as in the prior art is unnecessary, so that the structure can be simplified.

Claims (2)

하부드럼과, 하부드럼의 상하부 베어링에 의해 그 회전축이 지지되는 상부드럼과, 하부드럼으로부터 돌출된 회전축에 삽입되며 드럼모우터의 로터를 지지하는 예압보스를 구비하여 된 테이프레코더의 자기기록/재생용 헤드드럼에 있어서, 상기 하부베어링(13b)을 오일레스베어링으로 설치하고 이 오일레스베어링과 예압보스(14c) 사이에는 와셔(17)와 댐퍼링(18)이 순차적으로 개재되어 된 것을 특징으로 하는 카세트테이프레코더의 자기기록/재생용 헤드드럼.Magnetic recording / reproduction of a tape recorder having a lower drum, an upper drum supported by the upper and lower bearings of the lower drum, and a preload boss inserted into the rotating shaft protruding from the lower drum and supporting the rotor of the drum motor. In the head drum, the lower bearing 13b is installed as an oilless bearing, and the washer 17 and the damper ring 18 are sequentially interposed between the oilless bearing and the preload boss 14c. Head drum for magnetic recording / playback of cassette tape recorders. 제1항에 있어, 상기 댐퍼링(18)과 접촉되는 부위의 와셔(17) 일측면이 너어링 가공되고 상기 오일레스베어링과 접촉되는 와셔(17)의 상면이 정삭가공되어 그 표면조도가 좋게 된 것을 특징으로 하는 테이프레코더의 자기기록/재생용 헤드드럼.According to claim 1, wherein one side of the washer (17) in contact with the damper ring 18 is subjected to a nuring process and the top surface of the washer (17) in contact with the oilless bearing is finished to improve the surface roughness Head drum for magnetic recording / playback of a tape recorder.
KR2019910000748U 1991-01-18 1991-01-18 Magnetic recording/reproducing head drum KR930003679Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019910000748U KR930003679Y1 (en) 1991-01-18 1991-01-18 Magnetic recording/reproducing head drum

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Application Number Priority Date Filing Date Title
KR2019910000748U KR930003679Y1 (en) 1991-01-18 1991-01-18 Magnetic recording/reproducing head drum

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KR920015548U KR920015548U (en) 1992-08-17
KR930003679Y1 true KR930003679Y1 (en) 1993-06-21

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