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KR890006619Y1 - Reel brake unit of video cassette recorder - Google Patents

Reel brake unit of video cassette recorder Download PDF

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Publication number
KR890006619Y1
KR890006619Y1 KR2019860010795U KR860010795U KR890006619Y1 KR 890006619 Y1 KR890006619 Y1 KR 890006619Y1 KR 2019860010795 U KR2019860010795 U KR 2019860010795U KR 860010795 U KR860010795 U KR 860010795U KR 890006619 Y1 KR890006619 Y1 KR 890006619Y1
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KR
South Korea
Prior art keywords
clutch
reel
power shaft
operating lever
video cassette
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
KR2019860010795U
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Korean (ko)
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KR880003227U (en
Inventor
한용희
Original Assignee
주식회사금성사
구자학
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Priority to KR2019860010795U priority Critical patent/KR890006619Y1/en
Publication of KR880003227U publication Critical patent/KR880003227U/en
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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
    • G11B15/22—Stopping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/18—Brakes with three or more brake-blocks
    • 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
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/32—Driving record carriers by members acting directly or indirectly thereon through the reels or cores on to which the record carrier is wound

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

내용 없음.No content.

Description

비디오 카세트 레코더의 릴 브레이크 장치Reel brake unit of video cassette recorder

제1도는 종래 릴 브레이크 장치의 구성을 보인 개략 평면도.1 is a schematic plan view showing a configuration of a conventional reel brake device.

제2도는 래치트와 회전날개의 작용을 보인 제1도의 부분 측면도.Figure 2 is a partial side view of Figure 1 showing the action of a ratchet and a rotor blade.

제3도는 동력축을 지지대를 보인 사시도.3 is a perspective view showing the support of the power shaft.

제4도는 본 고안의 구성을 보인 부분 분해 사시도.Figure 4 is a partially exploded perspective view showing the configuration of the present invention.

제5도 및 제6도는 일방향 클러치에 대한 래치트의 작동원리를 보인 본 고안의 부분 측면도 및 단면도.5 and 6 are partial side and sectional views of the present invention showing the principle of operation of the ratchet for the one-way clutch.

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

21 : 펑션플레이트 22 : 걸림턱21: Function Plate 22: Jam Jaw

23 : 밀편 24 : 동력축23: compaction 24: power shaft

30 : 절곡부 31 : 접촉부30: bend portion 31: contact portion

32 : 클러치휠 32a : 고정공32: clutch wheel 32a: fixing hole

33 : 클러치스프링 34 : 돌출편33: clutch spring 34: protrusion

35 : 걸림돌기 35a : 경사면35: jamming 35a: slope

35b : 걸림면 36 : 클러치날개35b: engaging surface 36: clutch wing

본 고안은 비디오 카세트 레코더의 릴 브레이크 장치에 관한 것으로, 특히 한쪽 방향으로만 회전력을 전달할 수 있는 일방향 클러치를 이용하여 FF(빨리감기)나 REW(빨리 되감기) 동작중 STOP(정지)모드로 전환할 때 급속히 릴을 제동할 수 있게 한 급 브레이크에 관한 것이다.The present invention relates to a reel brake device of a video cassette recorder. In particular, a one-way clutch that can transmit rotational force in only one direction can be used to switch to STOP mode during FF (fast forward) or REW (fast reverse) operation. When it comes to braking the brakes, you can brake the reel quickly.

종래의 비디오 카세트 레코더에 사용되는 릴 브레이크 장치는 제1도 및 제2도에 도시한 바와같이, 공급릴(1)과 권취릴(2)에 브레이크력을 가하는 브레이크레버(3)(4)를 중간부에 형성한 축핀(5)(6)으로 기판으로 회전가능하게 축착하고, 일체로 형성된 고정돌기(7)(8)간에는 코일스프링(9)를 설치하고, 좌측 브레이크레버(3)의 연결돌기(10)를 우측 브레이크 레버(4)의 연결장공(11)에 삽입하며, 브레이크레버(3)(4)의 하부에 설치되어 그들을 구동시키는 작동레버(12)의 중간부 양측에는 축핀(5)(6)이 끼워지는 안내장공(13)(14)을 형성하고, 그 작동레버(12)의 일측단부에는 좌측(도면기준)으로 탄지하는 코일스프링(15)를 설치하고, 타측단부에는 축수편(16)(16´)을 형성하여 래치트(17)를 힌지핀(18)으로 결합하고 래치트(17)의 고정공(17b)(제2도)에는 작동레버(12)의 고정돌기(19)에 일단이 고정되는 코일스프링(20)의 타단을 고정함과 아울러, 구동모터의 동력을 도시되지 않은 캠으로 전달받아 좌우이동하는 펑션플레이트(21)의 우측단부에는 상기 작동레버(12)의 축수편(16)(16´)내측 걸림턱(22)을 밀게되는 밀편(23)을 형성하는 한편, 구동모터의 동력축(24)의 단부에는 회전날개(25)를 고정한 구성으로 되어 있다. 도면중 26은 동력축(24)의 지지대를 보인 것으로 제3도는 이의 사시도이다.A reel brake device used in a conventional video cassette recorder has brake levers 3 and 4 for applying a brake force to the supply reel 1 and the take-up reel 2, as shown in Figs. The shaft pins (5) (6) formed in the middle portion is rotatably compressed to the substrate, and the coil spring (9) is installed between the fixing protrusions (7) (8) formed integrally, and the left brake lever (3) is connected. The projection 10 is inserted into the connecting hole 11 of the right brake lever 4, and is installed at the lower portion of the brake levers 3 and 4, and shaft pins 5 are provided on both sides of the middle of the operating lever 12 for driving them. (6) is inserted into the guide hole 13, 14, and one side end of the operating lever 12 is provided with a coil spring (15) which is held to the left side (drawing reference), the other end A piece 16 (16 ') is formed to couple the latch 17 to the hinge pin 18, and a fixing stone of the operating lever 12 is provided in the fixing hole 17b (FIG. 2) of the latch 17. The other end of the coil spring 20, one end of which is fixed to 19, and at the right end of the function plate 21 which is moved left and right by receiving the power of the driving motor through a cam (not shown), the operation lever 12 (23) which pushes the inner locking jaw (22) of the bearing piece (16) (16 ') while the rotary blade (25) is fixed to the end of the power shaft (24) of the drive motor. have. 26 shows a support of the power shaft 24, and FIG. 3 is a perspective view thereof.

이와같이 구성된 종래의 릴 브레이크 구동장치는 공급릴(1)과 권취릴(2)에 브레이크력을 해제하는 경우에 제1도에서와 같이 구동모터의 동력을 받아 동력축(24)이 I방향으로 회전하며, 캠의 전달동력에 의하여 펑션플레이트(21)가 A방향으로 이동하면서 그의 밀편(23)이 작동레버(12)의 걸림턱(22)을 밀어 작동레버(12)를 B방향으로 이동시켜서 FF나 REW위치에 도달한다. 이때 작동레버(12)의 중간부에 돌출형성된 단턱(27)이 권취릴측 브레이크(4)의 보스(28)를 밀어 권취릴 브레이크(4)를 축핀(6)을 중심으로 시계반대방향으로 회전시켜 권취릴(2)에서 해제시키고 코일 스프링(9)에 의해 축핀(5)을 중심으로 공급릴 브레이크(3)를 시계방향으로 회전시켜 공급릴(1)에서 해제시킨다.In the conventional reel brake drive device configured as described above, when the brake force is released to the supply reel 1 and the take-up reel 2, the power shaft 24 is rotated in the I direction by the power of the drive motor as shown in FIG. The function plate 21 is moved in the A direction by the cam transmission power, and the pushing piece 23 pushes the locking jaw 22 of the operating lever 12 to move the operating lever 12 in the B direction, thereby FF. I reach the REW position. At this time, the step 27 protruding from the middle of the operating lever 12 pushes the boss 28 of the take-up reel side brake 4 to rotate the take-up reel brake 4 counterclockwise about the shaft pin 6. Release from the take-up reel (2) and by rotating the feed reel brake (3) around the shaft pin (5) by the coil spring (9) to release from the feed reel (1).

이와같이 하여 양측 브레이크(3)(4)로부터 해제된 양측릴(1)(2)는 구동모터의 동력에 의하여 FF나 REW를 수행할 수 있게 된다. 이때에 동력축(24)이 회전하여 회전날개(25)가 계속 I방향으로 회전하게 되나 이에 접촉된 래치트(17)는 제2도에 도시한 바와 같이 J, K방향으로 구속력 없이 유동하게 된다.In this way, both side reels (1) and (2) released from both side brakes (3) and (4) can perform FF or REW by the power of the drive motor. At this time, the power shaft 24 is rotated so that the rotary blade 25 continues to rotate in the I direction, but the ratchet 17 in contact with it will flow in the J, K direction as shown in Figure 2 without restraining force .

그후 스톱모드를 진행시키고자 하는 경우에는 구동모터를 반대로 회전시켜 회전날개(25)를 H방향으로 회전시켜서 회전날개(25)가 래치트(17)의 선단부(17a)를 치게되면 그의 후단부(17b)가 작동레버(12)의 하면 축수핀(16)(16´)내측에 돌설한 돌기부(29)에 걸리게 되면서 작동레버(12)가 L방향으로 밀려나게 되어 걸림턱(22)이 펑션플레이트(21)의 밀편(23)으로부터 이탈이 되고 코일스프링(15)의 복원탄성력에 의하여 좌측으로 급속히 이동한다. 이에따라 공급릴 브레이크(3)와 권취릴브레이크(4)가 상기한 동작의 역방향으로 회전하여 공급릴(1)과 권취릴(2)을 급제동함에 따라 정지되어 카세트의 테이프가 관성에 의하여 풀리는 것이 방지된다.Afterwards, if the stop mode is to be advanced, the drive motor is rotated in the opposite direction to rotate the rotary blade 25 in the H direction so that the rotary blade 25 hits the front end portion 17a of the ratchet 17. When the operating lever 12 is engaged with the projection lever 29 protruding from the inner side of the bearing pin 16 and 16 ', the operating lever 12 is pushed in the L direction so that the locking jaw 22 becomes a function plate. It is disengaged from the contact piece 23 of 21 and moves rapidly to the left side by the restoring elastic force of the coil spring 15. As shown in FIG. Accordingly, the feed reel brake 3 and the take-up reel brake 4 are rotated in the opposite directions to the above-described operation, and are stopped by the rapid braking of the feed reel 1 and the take-up reel 2 to prevent the cassette tape from being released by inertia. do.

그러나, 이러한 종래의 릴 브레이크 장치는 동력축(24)에 회전날개(25)를 압입하고, 작동레버(12)에 래치트(17)를 설치하여 회전날개(25)가 I방향 회전시에는 래치트(17)가 구속력없이 헛돌게 하고, H방향 회전시에만 L방향으로 이동할 수 있도록 구성을 함으로써 회전날개(25)가 I방향 회전시에 작동레버(12)의 돌기부(29)와 래치트(17)의 후단부(17b)간의 충돌소음이 심하고 작동레버(12)의 구성이 복잡한 문제점이 있었다.However, such a conventional reel brake device presses the rotary blades 25 into the power shaft 24 and installs the ratchets 17 on the operation lever 12 so that the rotary blades 25 rotate in the I direction. Since the cheat 17 is configured to be idle without restraining force and can be moved in the L direction only when the H direction is rotated, the protrusions 29 and the ratchet ( There was a problem that the collision noise between the rear end 17b of 17) was severe and the configuration of the operating lever 12 was complicated.

본 고안은 이러한 종래의 문제점을 해소하기 위하여 안출한 것으로, 동력축에 일방향 클러치를 설치하고, 작동레버의 구조를 단순화하여 소음문제 및 구조의 단순화를 기할 수 있게 한 것인바, 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention is devised to solve such a conventional problem, it is to install a one-way clutch on the power shaft, and to simplify the structure of the operating lever to simplify the noise problem and the structure, it is attached to the accompanying drawings When described in detail as follows.

제4도 및 제6도에 도시한 바와같이, 펑션플레이트(21)의 일측단부에 밀편(23)이 형성되고 작동레버(12)의 일측단부에는 걸림턱(22)이 형성되며 작동레버(12)의 일측에 동력축(24)이 직교되는 방향으로 연장된 릴 브레이크 장치에 있어서, 상기 작동레버(12)의 일측단부 L자형 절곡부(30)를 형성하여 걸림턱(22)과 접촉부(31)가 형성되게 하고, 동력축(24)에는 클러치휠(32)을 압입하고 클러치스프링(33)을 삽입하여 그 절곡단(33a)을 클러치휠(32)의 고정공(32a)에 삽입하며, 돌출편(34)이 외주면에 수개 돌출되고 내측단면에 경사면(35a)과 걸림면(35b)을 가지는 걸림돌기(35)가 수개 연속으로 구비된 일방향 클러치날기(36)를 형성하여 그 클러친날개(36)를 동력축(24)의 클러치스프링(33)외측에 헐겁게 삽입한 후 이탈방지링(37)을 압입고정한 것이다.As shown in FIGS. 4 and 6, the pressing piece 23 is formed at one end of the function plate 21, and the locking jaw 22 is formed at one end of the operating lever 12 and the operating lever 12. In the reel brake device extending in the direction in which the power shaft 24 is orthogonal to one side of the), one side end L-shaped bent portion 30 of the operating lever 12 is formed so that the locking jaw 22 and the contact portion 31 are formed. ) Is formed, the clutch shaft 32 is pressed into the power shaft 24 and the clutch spring 33 is inserted to insert the bent end 33a into the fixing hole 32a of the clutch wheel 32. The protruding piece 34 protrudes on the outer circumferential surface, and forms the one-way clutch blade 36 provided with several continuous protrusions 35 having the inclined surface 35a and the locking surface 35b on the inner end surface thereof. (36) is loosely inserted into the clutch spring (33) outside of the power shaft (24) after the release preventing ring 37 is press-fitted.

이와같이 된 본 고안은 FF나 REW시 작동레버(12)가 우측으로 이동하여 최종위치인 제5도의 상태 즉, 제2도와 동일상태에 도달했을 때 동력축(24)이 I방향으로 회동함에 따라 일방향 클러치 날개(36)의 돌출편(34)이 작동레버(12)의 접촉부(31)하면에 접촉되어도 동력축(24)의 클러치휠(32)에 절곡단(33a)이 고정된 클러치스프링(33)의 일측단(33b)이 클러치날개(36)의 경사면(35a)에 슬립되어 클러치날개(36)가 회전하지 못하게 되므로 작동레버(12)가 제5도의 상태를 유지하게 되며, 이와같은 상태에서 FF나 REW가 진행된 후, 동력축(24)을 H방향으로 회전시키면 스프링클러치(33)의 일측단(33b)이 일방향 클러치날개(36)의 걸림면(35b)에 걸림으로써 그 일방향 클러치날개(36)가 H방향으로 회전하게 되어 제5도에 도시한 바와같이 작동레버(12)의 접촉부(31)를 치게되어 작동레버(12)가 L방향으로 이동하게 되므로 펑션플레이트(21)로부터 걸림턱(22)가 해제되어 급속히 좌측방향으로 이동하게 되고 이에따라 정지모드가 완료된다.According to the present invention, when the operating lever 12 moves to the right in FF or REW and reaches the state of FIG. 5 which is the final position, that is, the same state as FIG. 2, the power shaft 24 rotates in the I direction in one direction. The clutch spring 33 having the bent end 33a fixed to the clutch wheel 32 of the power shaft 24 even when the protruding piece 34 of the clutch blade 36 contacts the bottom surface of the contact portion 31 of the operating lever 12. One side end (33b) of the) is slipped on the inclined surface (35a) of the clutch blade 36, so that the clutch blade 36 does not rotate, the operating lever 12 maintains the state of FIG. After the FF or REW has progressed, when the power shaft 24 is rotated in the H direction, one side end 33b of the spring clutch 33 is caught by the engaging surface 35b of the one-way clutch blade 36, thereby causing the one-way clutch blade ( 36 is rotated in the H direction to hit the contact portion 31 of the operating lever 12, as shown in Figure 5 the operating lever 12 It moved in the L direction, so the pawls 22 from the function plate 21 is released and moves rapidly to the left direction yiettara the stop mode is completed.

상기한 바와같은 본 고안은 일방향 클러치를 사용하게 됨으로써 작동레버의 구조를 일체형으로 하여 간단히 할 수 있으며, 또한 종래와 같이 래치트가 회전날개의 I방향 회전시 J, K방향으로 유동하면서 작동레버의 돌기부에 충돌하면서 발생하는 소음이 배제되는 이점이 있다.The present invention as described above can simplify the structure of the actuating lever by using a one-way clutch, and the ratchet flows in the J and K directions when the ratchet rotates in the I direction as in the prior art. There is an advantage in that noise generated while colliding with the protrusion is excluded.

Claims (1)

펑션플레이트(21)의 일측단부에 밀편(23)이 형성되고 작동레버(12)의 일측단부에는 걸림턱(22)이 형성되며 작동레버(12)의 일측에 동력축(24)이 연장된 릴 브레이크 장치에 있어서, 상기 작동레버의 일측단부에 절곡부(30)를 일체로 형성하여 걸림턱(22)과 접촉부(31)가 형성되게 하고, 동력축(24)에는 클러치휠(32)을 압입하고 클러치스프링(33)을 삽입하여 그 절곡단(33a)을 클러치휠(32)의 고정공(32a)에 고정하며, 수개의 돌출편(34)이 외주면에 돌출되고 내측단면에 경사면(35a)과 걸림면(35b)을 가지는 수개의 걸림돌기(35)가 연속으로 구비되는 클러치날개(36)를 형성하여 동력축(24)의 외측단부에 헐겁게 삽입한 후 이탈방지링(37)을 압입고정하여 구성함을 특징으로 하는 비디오 카세트 레코더의 릴 브레이크 장치.A reel in which a push piece 23 is formed at one end of the function plate 21, a locking jaw 22 is formed at one end of the operating lever 12, and a power shaft 24 is extended to one side of the operating lever 12. In the brake device, the bent portion 30 is integrally formed at one end of the actuating lever so that the locking jaw 22 and the contact portion 31 are formed, and the clutch wheel 32 is press-fitted into the power shaft 24. Then, the clutch spring 33 is inserted to fix the bent end 33a to the fixing hole 32a of the clutch wheel 32, and several protruding pieces 34 protrude to the outer circumferential surface and the inclined surface 35a to the inner end surface. And a clutch blade 36 having a plurality of engaging projections 35 having a locking surface 35b in series and being loosely inserted into the outer end of the power shaft 24, and then press-fit the release preventing ring 37. Reel brake device of a video cassette recorder, characterized in that configuration.
KR2019860010795U 1986-07-23 1986-07-23 Reel brake unit of video cassette recorder Expired KR890006619Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860010795U KR890006619Y1 (en) 1986-07-23 1986-07-23 Reel brake unit of video cassette recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860010795U KR890006619Y1 (en) 1986-07-23 1986-07-23 Reel brake unit of video cassette recorder

Publications (2)

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KR880003227U KR880003227U (en) 1988-04-13
KR890006619Y1 true KR890006619Y1 (en) 1989-09-30

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KR2019860010795U Expired KR890006619Y1 (en) 1986-07-23 1986-07-23 Reel brake unit of video cassette recorder

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KR (1) KR890006619Y1 (en)

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KR880003227U (en) 1988-04-13

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