KR940004328Y1 - Tape tension control device for magnetic reproducing device - Google Patents
Tape tension control device for magnetic reproducing device Download PDFInfo
- Publication number
- KR940004328Y1 KR940004328Y1 KR2019900002307U KR900002307U KR940004328Y1 KR 940004328 Y1 KR940004328 Y1 KR 940004328Y1 KR 2019900002307 U KR2019900002307 U KR 2019900002307U KR 900002307 U KR900002307 U KR 900002307U KR 940004328 Y1 KR940004328 Y1 KR 940004328Y1
- Authority
- KR
- South Korea
- Prior art keywords
- tension
- belt
- tape
- reel
- brake cylinder
- Prior art date
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Classifications
-
- 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
- G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Landscapes
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래의 자기기록 재생장치에서의 테이프의 장력조절기구에 대한 구성평면도.1 is a plan view of a tape tension control mechanism in a conventional magnetic recording and reproducing apparatus.
제2도는 본 고안에 따른 장력조절기구 구성도.2 is a configuration of the tension adjusting mechanism according to the present invention.
제3도는 제2도의 A-A선 구성단면도이다.3 is a cross-sectional view taken along the line A-A of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 자기테이프 2 : 텐션포스트(TENSION POST)1: Magnetic Tape 2: Tension Post
3 : 텐션아암(TENSION ARM) 4 : 제동부3: Tension Arm 4: Braking Part
4′ : 릴대 5 : 제동벨트4 ′: Reel stand 5: Braking belt
6 : 텐션아암힌지점 7,8 : 테이프가이드포스트6: tension arm hinge point 7, 8: tape guide post
9 : 텐션스프링 10 : 브레이크실린더9: tension spring 10: brake cylinder
10a : 벨트홈 11 : 벨트10a: belt groove 11: belt
20 : 공급리일20: supply rail
본 고안은 VTR과 같은 자기테이프를 사용하는 기록재생장치에 관한 것으로, 구체적으로는 자기테이프테에 적절한 텐션(TENSION)을 부여해주는 장력조절기구에 관한 것이다.The present invention relates to a recording and reproducing apparatus using a magnetic tape, such as a VTR, and more particularly, to a tension adjusting mechanism for imparting appropriate tension to a magnetic tape frame.
자기테이프의 장력을 조절하는 방식으로서는, 제1도에서와 같이, 공급리일(20)에 자기테이프(1)가 감겨지고, 텐션아암(3)에 텐션포스트(2)가 설치되며, 상기 텐션아암(3)이 스프링(9)으로 탄지된채 릴대 제동부(4)를 제동벨트(5)로 제동되게 하여 각 가이드포스트(7, 8)를 지나는 자기테이프의 장력을 조절하도록 구성되어 있다.As a method of adjusting the tension of the magnetic tape, as shown in FIG. 1, the magnetic tape 1 is wound around the supply rail 20, the tension post 2 is provided on the tension arm 3, and the tension arm. (3) is configured to adjust the tension of the magnetic tape passing through each guide post (7, 8) by braking the reel-base braking portion (4) with the brake belt (5) while being supported by the spring (9).
즉, R2는 자기테이프가 가장 적게 감겼을때의 릴테이프반경, R1은 자기테이프가 가장 많이 감겼을때의 릴테이프반경, r이 릴대에 감진 제동벨트(5)의 반경, μ°θ°를 각각 제동벨트(5)와 릴대사이의 마찰계수 및 제동밸브(5)가 제동부(4)에 감긴 감김각이라 할때, R1R2에 따른 장력비는That is, R 2 is the reel tape radius when the magnetic tape is wound the least, R 1 is the reel tape radius when the magnetic tape is wound the most, the radius of the braking belt 5 in which r is wound on the reel band, μ ° θ When ° is the friction coefficient between the brake belt 5 and the reel and the winding angle of the brake valve 5 wound around the brake unit 4, the tension ratio according to R 1 R 2 is
(단, C는 상수)로 표시할 수 있고, 여기에 자기테이프(1)가 가장 많이 감겼을때와 가장 적게 감겼을때의 장력변화를 적게 하기 위해서는 (즉, T2/T1을 작게 하기 위해서는) 상기 ①식의 분모, 분자의 두번째 항을 첫번째항에 비해 크게 해야 하는데, 만일 릴대의 반경(r)을 크게 하면 VTR의 소형화가 곤란하고, 11을 크게 하면 텐션포스트의 위치정도가 나빠지며, 12를 적게 하는 것은 기구구조상 곤란한 한계가 있었다.(Where C is a constant), and in order to reduce the tension change when the magnetic tape (1) is wound the most and the least, (ie, make T 2 / T 1 smaller). in order) When the above ① expression for the denominator, the second term of the numerator of significantly be compared to the first term, by increasing the radius (r) of emergency rildae and a reduction in the size of the VTR is difficult, the 11 larger the position degree of tension posts or Falling out, and reducing the number of 1 2 was difficult because of the mechanism structure.
따라서, 종래의 자기기록 재생장치에서는 상기한 바와 같은 장력조절기구로 테이프양에 따라 일정한 텐션을 부여하기가 곤란한 단점이 있었다.Therefore, the conventional magnetic recording and reproducing apparatus has a disadvantage in that it is difficult to give a constant tension in accordance with the tape amount by the tension adjusting mechanism as described above.
이에 본 고안에서는 릴대에 감겨있는 테이프양이 변하더라도 항상 일정한 장력을 부여하여 자기기록 재생장치의 성능을 향상시키도록 한 것이다.Therefore, the present invention improves the performance of the magnetic recording and reproducing apparatus by always applying a constant tension even if the amount of tape wound on the reel is changed.
이를 위하여 본 고안은 브레이크실린더와, 브레이크실린더와 릴대를 연결하는 벨트기구 및 제동벨트를 갖추도록 하여, 상기 브레이크실린더에 가해지는 제동력을 상기 벨트기구로서 상기 릴대에 전달하여 공급리일을 제동함에 따라서 항상 일정한 테이프장력을 유지시켜주도록 한 것이다.To this end, the present invention provides a brake cylinder, a belt mechanism and a braking belt for connecting the brake cylinder and the reel stage, and transmits the braking force applied to the brake cylinder to the reel stage as the belt mechanism to always brake the supply rail. It is to maintain a constant tape tension.
이하, 첨부도면을 본 고안의 1실시예로하여 더욱 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings as an embodiment of the present invention in more detail as follows.
제2도는 본 고안의 구성예시도로써, 릴대(4′)에 제동력을 부여하기 위한 원형의 브레이크실린더(10)를 설치하되, 상기 실린더(10)는 지지축(12)에 회전가능하도록 설치되며, 상기 브레이크실린더(10)의 반경(r2)보다 작게 실린더(10)를 따라 벨트홈(10a)을 형성시킨 것이다.2 is a configuration example of the present invention, the circular brake cylinder 10 for providing a braking force to the reel (4 ') is installed, the cylinder 10 is installed to be rotatable on the support shaft 12 The belt groove 10a is formed along the cylinder 10 smaller than the radius r 2 of the brake cylinder 10.
또한, 상기 실린더(10)는 릴대(4′)에 벨트(11)로써 연결구동되며, 도면중 미설명부호 20은 공급리일, 6은 텐션아암한 지점이다.In addition, the cylinder 10 is driven by a belt 11 to the reel base 4 ', and reference numeral 20 in the drawing is a supply rail, 6 is a tension arm point.
상기한 구성에 따라, 공급리일(20)과 브레이크실린더(10)는 벨트(11)로써 상호 연동되므로, 제동벨트(5)가 브레이크실린더(10)이 가하는 제동력은 벨트(11)를 거쳐 릴대(4′)에 전달되어져 공급리일(20)의 회전이 제동된다.According to the above-described configuration, since the supply rail 20 and the brake cylinder 10 are interlocked with each other by the belt 11, the braking force applied by the brake belt 5 to the brake cylinder 10 is transmitted through the belt 11 to the reel bar ( 4 ') to brake the rotation of the supply rail 20.
특히, 상기 자기테이프(1)에 가해진 테이프의 장력크기에 따라 텐션아암(3)이 좌우로 회동하므로써 브레이크실린더(10)에 작용하는 제동벨트(5)의 제동력이 변화하고, 이 제동력이 벨트(11)를 매개로 릴대(4′)에 전달되어 테이프의 장력(TENSION)이 조절되어진다.In particular, the braking force of the braking belt 5 acting on the brake cylinder 10 changes as the tension arm 3 rotates from side to side according to the tension size of the tape applied to the magnetic tape 1, and this braking force is the belt ( 11) It is transmitted to the reel stage 4 'through the media to adjust the tension of the tape.
이와같은 자기테이프(1)의 테이프 감김량에 따른 장력비는The tension ratio according to the amount of tape winding of the magnetic tape 1 is
로 표시되고, 여기서, 브레이크작용부의 반경(r2)과 벨트작용부의 반경(r1)비를 임의로 선택할 수 있으므로 테이프의 감김량에 관계없이 일정하게 유지하기 쉽게 된다.Displayed, and wherein, it is possible to select a braking action section radius (r 2) and the radius (r 1) the non-functional parts of the belt are optionally easy to maintain a constant, regardless of the sense of a tape gimryang.
상기와 같은 구성과 기능에 따라 공급리일과 연결된 릴대와 브레이크실린더를 벨트로 연결시켜서 그 제동력이 벨트를 통해 릴대에 전달되므로 벨트작용부의 직경비를 임의로 설정해서 자기테이프의 감김량이 변하더라도 일정한 자기테이프의 장력을 유지시킬 수 있고, 또한 벨트작용부의 직경비(r2/r1)를 임의로 설정해서 제동력을 조절할 수 있게 된다.According to the above configuration and function, the reel stage connected to the supply rail and the brake cylinder are connected by the belt, and the braking force is transmitted to the reel stage through the belt. The tension of the tape can be maintained, and the braking force can be adjusted by arbitrarily setting the diameter ratio r 2 / r 1 of the belt action portion.
또한, 브레이크실린더를 릴대에서 떨어진 위치에 설치할 수 있으므로 장력조절을 위한 부품설치위치도 임의선택이 가능하며 설계상 위치제한을 완화시킬 수 있는 것이다.In addition, since the brake cylinder can be installed at a position away from the reel, it is possible to arbitrarily select a component installation position for tension adjustment and to alleviate the positional limitation in design.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019900002307U KR940004328Y1 (en) | 1990-02-28 | 1990-02-28 | Tape tension control device for magnetic reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019900002307U KR940004328Y1 (en) | 1990-02-28 | 1990-02-28 | Tape tension control device for magnetic reproducing device |
Publications (2)
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KR910015868U KR910015868U (en) | 1991-09-25 |
KR940004328Y1 true KR940004328Y1 (en) | 1994-06-25 |
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KR2019900002307U KR940004328Y1 (en) | 1990-02-28 | 1990-02-28 | Tape tension control device for magnetic reproducing device |
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KR (1) | KR940004328Y1 (en) |
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- 1990-02-28 KR KR2019900002307U patent/KR940004328Y1/en not_active IP Right Cessation
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