KR920007724B1 - Front loading driving device for vtr - Google Patents

Abstract

The device adaptable to VTR is for loading and unloading a video cassette tape using a cam-slider formed with a rack and cam- homes in a body. It reduces the size and noise of VTR and the cost of manufacturing. It comprises movable bosses (12,12'), a cams- lider (9) located at the outer side of a bracket (5), cam- homes (7,7') shaped as the special type with declined sections (7a,7a') and horizontal sections (7b,7b'), movable bosses (12,12') protruding from moving pathes (3,3'), and sliding-homes (11,11',11") of the guiding boards (10,10',10").

Description

V.T.R's Front Loading Driving Method

1 is an overall perspective view of the present invention.

2 is a plan view of the assembled state of the present invention.

3 is an assembled side view of the present invention.

Figure 4 is an illustration of the operating state at the time of initial cassette insertion according to the present invention.

5 is a diagram illustrating a front loading horizontal operating state of the cassette holder according to the present invention.

Figure 6 is an illustration of the front loading vertical operating state of the cassette holder according to the present invention.

7 is a diagram illustrating a cassette seating operation state according to the present invention.

8 is a diagram illustrating an operating state during cassette extraction (EJECT) according to the present invention.

* Explanation of symbols for main parts of the drawings

1: cassette holder 3, 3 ': flow path

4: main base 5: bracket

6: Rack 7, 7 ': Cam groove

7a, 7a ': inclined portion 7b, 7b': horizontal portion

9: Camslider 10, 10 ', 10 ＂: Guide

12, 12 ': floating boss 16: pinion

17: housing 18: worm

19: worm gear M: motor

The present invention relates to a front loading driving method of a video tape recorder, and in particular, a method in which a motor, an idle gear, and a loading gear are generally used by a cam driving method by a cam slider formed with a rack and a cam groove is provided. The present invention relates to a video loading recorder (hereinafter referred to as a VTR) for driving the front loading and cassette seating operations stably while eliminating a large number of components.

In general, the VTR front-loading driving method inserts a cassette into the inner holder of the top cover from the front of the VTR and pushes it by a certain distance. Then, the motor operates by a known switch operation and the motor rotation is decelerated. The worm on the motor shaft rotates, and the worm gear meshed with the worm gear is decelerated at a constant speed and rotates, thereby rotating the idle gear fixedly coaxially with the worm gear.

At this time, the gear is engaged with the idle gear, and when the loading gear connected to the cassette holder and the lever rotates, one lever of the loading gear is connected to the lever so as to rotate according to the rotation angle of the loading gear, and the cassette is inserted. The cassette holder is horizontally and vertically loaded to complete the cassette seating on the reel table of the VTR.

On the contrary, during cassette ejection, if the motor rotates in the reverse direction by a known switch operation, the motor shaft and the worm rotate and the worm gear engaged with it rotates to rotate the idle gear built in the coaxial direction. The loading gear, which is engaged with the gear and connected to the cassette holder and the lever, rotates to extract the cassette to the outside by vertically and horizontally frontloading the cassette holder.

As described above, the conventional front-loading driving method includes a motor, a worm, and a worm gear for frontloading the cassette to be seated or extracted on the reel table, and to the inside of the worm gear for transferring the driving motion to the cassette holder. As the idle gear is installed on the coaxial shaft, the loading gear connected to the cassette holder and the lever is installed, which is engaged with the idle gear, and each of them consists of a tension spring, a torsion spring, and an operation. Since the parts must be manufactured precisely, it is difficult to manufacture the mold and the manufacturing process, which increases the manufacturing cost.In particular, the assembly process requires many parts to be interconnected and assembled, which takes a lot of time and wastes manpower and time. Moves and each gear is engaged Since it was precipitated seam noise generated when the front-loading driving, a failure occurs in front loading unit consisting of a number of components frequent long-term use decreases the quality and the reliability and life of the product.

In addition, since the front-loading unit is made of the linkage driving operation of many parts, a large amount of installation space is required to assemble and install the individual parts at driving intervals, and not only the product can be made compact, but also the front-loading operation is large. Because it consists of the interlocking operation of the parts, the front loading operation as well as the cassette seating operation could not be performed stably and completely.

In order to improve the outdated technical means of the conventional front loading method of the VTR, which is composed of the linkage operation of many parts, the cam slider formed with the rack and the cam groove integrally is applied to the front loading driving method to remove many parts, When the present invention is described in detail with reference to the accompanying drawings, it is possible to reduce the problems, cost reduction and noise during operation, and to stably perform the cassette coding operation and seating, and to make the product more compact. .

형상의 캠홈(7)(7')이 통공되면서 하단에는 슬라이딩 걸림턱(8)을 갖는 캠슬라이더(9)가 메인베이스(4)상의 측면에 일체로 형성된 슬라이딩 안내편(10)(10')(10＂)내측의 슬라이딩홈(11)(11')(11＂)에 좌, 우 슬라이딩 동작가능케 끼워 설치되며, 메인베이스(4)상의 측면 브라켓트(5)의 프론트로딩 유동로(3)(3＂)로 돌출되도록 카세트홀더(2)에 형성된 두 개의 유동보스(12)(12')에 제2도와 제3도에서 보는 바와 같이 와샤(13)(13')로 이탈되지 않도록 끼워 고정 설치되고, 이 상태에서 카세트홀더(2)와 연결된 두 개의 유동보스(12)(12')는 캠슬라이더(9)의 캠홈(7)(7') 경상부(7a)(7a') 상단에 끼워진 상태가 되며, 메인베이스(4)상의 측면 브라켓트(5) 끝단 상면에는 고정보스(14)가 돌출 형성되어 회전축(15)이 축설되며, 이 회전축(15)의 끝단에 캠슬라이더(9)의 상단 랙(6)과 맞물려지며 폭이 넓은 피니언(16)이 고정 설치되어, 이 피니언(16)의 하부측에 맞물려지도록 워엄기어(19)가 메인베이스(4) 끝단의 하우징(17)에 축설되며 워엄기어(19)는 하우징(17) 내부에 고정 설치된 모터(M) 축상의 워엄(18)과 맞물려지고 여기서 메인베이스(4)상의 일축 브라켓트(5)의 상부 끝단 고정보스(14)에 축설된 회전축(15)상의 피니언(16)은 캠슬라이더(9) 상부의 랙(6)과 하우징(17) 내부의 워엄기어(19)에 함께 물려진 상태로 조립구성 되는 것이다.In the overall configuration of the present invention, as shown in FIG. 1, the cassette holder 2 for inserting the cassette C and performing the front loading operation is fixedly installed therein, and the front loading flow paths 3 and 3 'are formed. The rack (6) is formed integrally with the long end at the upper end to the outside of the side bracket (5) on the main base (4), and before and after the center position (7a) (7a ') and the horizontal portion (7b) ) (7b ')

Sliding guide piece (10, 10 ') formed integrally on the side on the main base 4, the cam slider (9) having a sliding locking jaw (8) at the bottom while the cam groove (7) (7') of the shape is through (10 ＂) It is installed in the sliding groove (11) (11 ') (11＂) of the inner side so that a left and right sliding operation is possible, and the front loading flow path (3) of the side bracket (5) on the main base (4) ( 3 ＂) to the two flow bosses 12 and 12 'formed on the cassette holder 2 so as to protrude into the washers 13 and 13' as shown in FIG. 2 and FIG. In this state, the two flow bosses 12 and 12 'connected to the cassette holder 2 are fitted to the upper ends of the cam grooves 7 and 7' of the cam slider 9, 7a and 7a '. In the upper end of the side bracket (5) on the main base (4), the high information 14 is protruded to form a rotating shaft 15 is formed, the upper end of the cam slider (9) at the end of the rotating shaft (15) Engaged with rack (6) The wide pinion 16 is fixedly installed so that the worm gear 19 is constructed in the housing 17 at the end of the main base 4 so that the pinion 16 is engaged with the lower side of the pinion 16, and the worm gear 19 is connected to the housing. (17) The pinion on the rotating shaft (15) meshed with the worm (18) on the motor (M) shaft fixedly installed therein and built on the high end (14) of the upper end of the uniaxial bracket (5) on the main base (4). 16 is assembled to the rack 6 of the cam slider (9) and the worm gear 19 in the housing 17 together to be bitten together.

Referring to the operation and effect of the present invention configured as described above in detail.

3 shows the front end of the front loading flow paths 3, 3 'of the uniaxial bracket 5 on the main base 4 and the inclined portions 7a and 7a of the cam grooves 7 and 7' of the cam slider 9. The cassette holder 2 is locked to a known safety lever (not shown) while the two floating bosses 12 and 12 'connected to the cassette holder 2 are inserted and bited at the upper end thereof. .

In such a state, when the cassette C is pushed by hand to the front of the cassette holder 2 as shown in FIG. 4, a known safety lever that locks the cassette holder 2 at the same time (not shown) When the cassette holder 2 moves forward by the force pushed by the hand by releasing the lock), a known switch (not shown) is operated and the motor M operates to rotate the worm 18 on the shaft. The worm gear 19 meshed with the worm 18 rotates so that the pinion 16 installed on the high shaft 14 rotating shaft 15 at the end of the uniaxial bracket 5 on the main base 4 rotates.

At this time, the cam slider 9 engaged with the pinion 16 and fitted into the sliding grooves 11, 11 ', 11' in the uniaxial guide pieces 10, 10 ', 10' on the main base 4 is provided. The upper rack 6 of the cam slider 9 is moved to the right as the pinion 16 rotates, so that the entire cam slider 9 moves to the right. At this time, the cam grooves 7 and 7 'formed at the center of the cam slider 9 are moved. Cam grooves 7 and 7 'of the cam slider 9 push the flow bosses 12 and 12' of the cassette holder 2 fitted to the upper end of the inclined portion 7a to the right. Is inserted into the cassette holder (2) is a horizontal front loading flow path (3) (3 ') of the one side bracket (5) on the main base (4) is horizontally front loaded as shown in FIG. do.

Here, the flow bosses 12 and 12 'are positioned between the horizontal and vertical portions of the flow passages 3 and 3'.

After the horizontal front loading is completed, as shown in FIG. 6, the cassette holder 2 starts vertical front loading. In this case, the pinion 16 continues to rotate so that the pinion 16 rotates. When the cam slider 9 fitted to one side guide piece 10, 10 ', 10' of (4) is moved to the right by the rack 6 of the upper part, the whole cam slider 9 continues to the right. Will try to move to.

At this time, since the flow bosses 12 and 12 'are located at the horizontal ends of the flow paths 3 and 3' of the bracket 5, the cassette holder 2 together with the flow bosses 12 and 12 ' Will stop.

However, since the cam slider 9 continues to move to the right due to the operation of the pinion 16 and the rack 6, the left side surface of the inclined portions 7a and 7a 'of the cam grooves 7 and 7' is the floating boss. 12) 12 'is pushed in the right direction, and the inclined portions 7a and 7a' are moved to the right and eventually push the flow bosses 12 and 12 'downward.

Accordingly, the cassette holder 2 together with the flow bosses 12 and 12 'while the inclined portions 7a and 7a' press and contact the flow bosses 12 and 12 'from the upper surface to the lower surface thereof. Is pushed downward from the upper part of the flow path (3) (3 ') of the bracket (5), and the flow boss (12) (12'0) is the cam groove (7) (7) by the right movement of the cam slider (9). The cassette C mounted therein along with the cassette holder 2 is seated on the reel table (not shown) while riding the horizontal portions 7b and 7b 'of' '.

In this state, the rotation of the motor M, the worm 18 and the worm gear 19 are transmitted to the upper rack 6 of the cam slider 9 through the pinion 16 so that the entire cam slider 9 While moving to the right, as shown in FIG. 7, the flow bosses 12 and 12 'of the cassette holder 2 are inserted into the horizontal portions 7b and 7b' of the cam grooves 7 and 7 '. The motor M is stopped by the switch operation, and the moving bosses 12 and 12 'of the cassette holder 2 are moved to the horizontal portions 7b and 7b of the cam grooves 7 and 7' with each operation stopped. ) Inserted to the front end is completed with the cassette (C) and the insert seating operation.

At this time, both side flow bosses 12 and 12 'of the cassette holder 2 are inserted into the cam grooves 7 and 7' of the cam slider 9 and the horizontal portions 7b and 7b 'so that the cassette C is reeled. It will be able to prevent the floating up while seated on the table.

In this way, the tape can be played back by driving the V.T.R while the cassette is completely seated.

On the contrary, when the cassette C is to be extracted (EJECT), when the known extraction button (not shown) is pressed and operated, the motor M rotates in the opposite direction to the above operation, and the pinion 116 as shown in FIG. ) Rotates in reverse and the cam slider 9 is moved to the left side, so that the flow bosses 12 and 12 'of the cassette holder 2 move to the horizontal portions 7b and 7b' of the cam grooves 7 and 7 '. And along the inclined portions 7a and 7a ', the vertical and horizontal frontloading operations of the flow paths 3 and 3' of the uniaxial bracket 5 on the main base 4 are carried out. EJECT will be extracted.

Therefore, the loading motor, the worm gear and the worm gear, which do not use the loading gear, the idle gear and the lever, like the conventional cam slider consisting of the cam groove and the rack is connected to the front loading is stable and the cassette is completely seated The flow boss of the cassette holder in which the cassette is inserted in the state is inserted into the cam groove horizontal part of the cam slider so that it never floats upward, and it is stable to the cassette's seating state. It is easy and simple, which can reduce the waste of manpower and time during the assembly process, which can reduce the manufacturing cost. Especially, it can make the product compact because it occupies little installation space due to the small number of lumps. It is possible to upgrade the product by reducing the noise. , Fewer parts, so you will want to get the effects that can improve the reliability and quality of the product failure rate down.

Claims (1)

The flow bosses 12 and 12 'formed in the cassette holder 2 are inserted into the flow paths 3 and 3' formed in the bracket 5 on the main base 4 and mounted therewith with the cassette holder 2. In front loading the tape, the cam slider 9 is installed on the outside of the bracket 5, but the cam slider 9

Flow bosses 12 protruding from the flow paths 3 and 3 'by forming cam grooves 7 and 7' having inclined portions 7a and 7a 'and horizontal portions 7b and 7b' in shape. (12 ') while inserting the washers (13) and (13') at the tip of the flow boss (12) and (12 '), and the sliding base (8) at the bottom of the cam slider (9) to form a main base The rack is inserted into the sliding grooves 11, 11 'and 11' of the guide plates 10, 10 'and 10' formed at the outer end of the rack, and formed at the upper end of the cam slider 9. 6) is engaged with the pinion 16 arranged in the high information 14 of the rear upper end of the bracket (5), the pinion 16 is engaged with the worm gear (19) built in the housing 17, while the worm gear (19) ) Is engaged with the worm (18) on the motor (M) axis, the front and rear of the cassette holder by the cam slider (9) which is conveyed left and right by the operation of the motor (M) of the VTR Front loading drive method.

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