KR0177647B1 - Idle gear driving device of vcr - Google Patents

Abstract

The present invention in the V-Cal to enable the gap adjustment of the supply reel and the take-up reel so that can be used for a plurality of cassette tapes of different sizes, so that the power of the capstan motor can cope with the position shift of the supply reel and take-up reel An idle gear driving apparatus comprising a reel base (22, 32) rotatably supporting a supply reel (20) and a take-up reel (30) and moving a variable position and a standard position. In the V-Cal, which can serve as a tape, it is rotatably fixed on the main base 10, and the gear 22a and the teeth of the supply-side reel base 22 when the supply reel 20 is in the standard position. The first transfer gear 14 to be joined, rotatably fixed on the main base 10, and the second transfer gear 16 to be engaged with the first transfer gear 14 and the main base 10. On the lower end of the rotatably fixed support shaft 44 The idle drive gear 42 and the main drive 10, which are fixed and receive power from the capstan motor 40, are formed on the main base 10, and the support reel 20 and the take-up reel 30 are in a variable position. A guide hole 18 which permits selective movement between the take-up reel 30 and the second transfer gear 16 in a standard position or between the support shaft 44 and the support shaft 44. A moving means (60) providing a force for moving in the guide hole (18), an idle gear (46) fixed to an upper end of the support shaft (44) and receiving a rotational force of the idle driving gear (42); The idle plate 48 is rotatably fixed to an upper end of the support shaft 44 so that one side has a predetermined friction force with the idle gear 46 and rotates according to the rotation direction of the capstan motor 40, and the idle It is rotatably fixed to the plate 48 and at the same time engaged with the idle gear 46 in a variable position And selectively engage the supply reel 20 and the take-up reel 30 or the take-up reel 30 and the first transfer gear 16 in the standard position to power the supply reel 20 and the take-up reel 30. It characterized in that it comprises a reel driving gear (50) for transmitting.

Description

VRL's idle gear drive

1 is a plan view showing the configuration of an idle gear driving apparatus according to the present invention.

Figure 2 is a cross-sectional view showing the configuration of the reel spacing device according to the invention.

3 is a plan view showing the operating state of the idle gear driving apparatus according to the present invention,

Figure 3a is a plan view showing the operation in the variable position.

3b is a plan view showing the operation in the standard position.

* Explanation of symbols for main parts of the drawings

10: main base 12: head drum

14: first transmission gear 16: second transmission gear

18: guide hole 20: supply reel

30: reel 22, 32: reel base

22a, 32a: gear 40: capstan motor

42: children driving gear 44: support shaft

46: idle gear 62: drive motor

64: feed axis 66: slider

68: driving lever

The present invention relates to an idle gear driving device of V-C. More specifically, in the V-CAL which enables the feed reel and the winding reel to be adjusted so that a plurality of cassette tapes having different sizes can be used, It relates to an idle gear driving device for enabling power to correspond to the positional movement of the supply reel and take-up reel.

In general, a VRC device is a device for recording a video signal on a magnetic recording tape or reproducing a recorded signal. There are various types of VLC devices, for example, ½in, which is widely used for home use. 8mm cassette tapes have been developed for cast tape and small size for easy portability. In recent years, digital VRFs have been developed that are more compact and can be easily carried and handled. This digital VR can record the video signal recorded on the magnetic tape as a digital signal to meet the requirements required for compacting the cassette tape. In other words, in order to make the cassette tape compact, it is necessary to satisfy the requirements such as reducing the signal track width of the magnetic tape, making the thickness of the magnetic tape thin, and compressing and recording the data. Since the TV signal uses a nonlinear digital signal as a recording signal, the above requirements are satisfied.

In addition, such a digital VR device has an advantage of providing a high quality screen such as no noise generated on a still image, for example.

A typical digital VR device includes a main base, a traveling system formed to move a tape seated on the main base along a predetermined path, a supply reel and a winding reel supporting the tape cassette and driving the tape in a selected direction. It is provided.

At the periphery of the supply reel and the take-up reel, a brake device is provided to limit the rotation of the reel if necessary.

The traveling system is provided with a head drum assembly including a head which rotates in contact with the tape from the tape cassette and records the signal on the tape or reproduces the recorded signal. In addition, the traveling system is provided with a capstan motor and a capstan shaft which rotates by the capstan motor and moves the tape in cooperation with the pinch roller.

A reel driving device is installed between the supply reel and the take-up reel to drive any one reel selected from the supply reel or the take-up reel by receiving power from the capstan motor.

The reel drive device has a support shaft on which a reel gear, which receives power from the capstan motor, is rotatably fixed to the main base, and a rear end of the idle plate on which the idle gear is rotatably supported at the front end thereof. Rotatably supported.

In addition, there is provided an idle gear that is rotatably fixed to the tip of the idle plate and at the same time receives power from the reel gear and meshes with the selected reel.

The idle gear makes a pivoting motion around the support shaft according to the rotational direction of the capstan motor, and after the idler is engaged with the selected reel of the supply or winding reel, the idle gear is rotated. At this time, the driving direction of the reel is configured to rotate in the same direction as the rotation direction of the capstan motor.

The idle gear and the idle plate have a predetermined friction torque so that the friction force acts as a rotating torque on the idle plate when the reel gear is rotated so that the idle gear can rotate.

However, such a conventional digital VR device has a problem in that it can be applied only to a cassette tape of a certain size, which can not be applied to a cassette tape of another standard.

In other words, cassette tapes have been developed with different cassette tapes of different sizes according to the needs of the consumer. Nevertheless, in the conventional digital VAL device, the supply reel and the take-up reel are fixed at a predetermined position. Since cassette tapes with different intervals cannot be accommodated, consumers should always use only cassette tapes of the standard at the time of recording, and use separate recording equipment to play back video signals recorded on cassette tapes of different sizes. After moving to the cassette tape, the playback is troublesome and the playback operation is cumbersome and the picture quality is poor.

Therefore, in consideration of the above-mentioned problems, V-idal's idle gear driving device has been developed to enable the recording and playback of cassette tapes of different sizes by allowing the feed reel and the winding reel to be widened or narrowed as necessary. .

In addition, the V-Cell apparatus capable of adjusting the reel spacing as described above required an idle driving device capable of transmitting rotational power to the reel according to the positional movement of the reel.

That is, since the reel moves the variable position and the standard position, the conventional idle gear driving device having a limited form and length cannot transmit power to the variable reel, thereby achieving efficient power transmission in which position the reel is located. I need a child drive.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide an idle gear driving device that copes with the movement of the supply reel and the take-up reel and effectively transmits the power of the capstan motor.

An object of the present invention is to provide a reel base rotatably supporting a feed reel and a take-up reel, and having a reel base for moving a base position and a standard position. Rotatably fixed to the first transfer gear meshing with the gear of the supply reel and the second transfer gear meshing with the first transfer gear when the supply reel is in the standard position. And an idle driving gear fixed to the lower end of the support shaft rotatably fixed on the main base to receive power from the capstan motor, and between the supply reel and the winding reel formed on the main base, wherein the support shaft is in a variable position. A guide hole allowing selective movement between the winding reel in the standard position and the second transmission gear, and a support shaft connected to the support shaft A moving means for providing a force moving in the guide hole, an idle gear fixed to an upper end of the support shaft to receive the rotational force of the idle drive gear, and one end rotating to an upper end of the support shaft so as to have a predetermined friction force with the idle gear. An idling plate which is fixed so as to rotate according to the rotational direction of the capstan motor, and a feeding reel and a winding reel in a variable position engaged with the idle gear while being rotatably fixed to the idle plate and wound in a standard position. And a transmission gear selectively engaged with the first transmission gear to transfer power to the supply reel and the take-up reel.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 shows a configuration of a preferred embodiment of a BC-I idle gear drive device according to the present invention, according to the present invention is provided with a main base 10 is installed with a traveling system including a head drum (12) .

On this main base, the feed reel 20 and the take-up reel 30 are rotatably supported and at the same time the center distances of the supply reel 20 and the take-up reel 30 are relatively close (hereinafter referred to as 'variable positions'). A pair of reel bases 22 and 32 are provided for selectively moving a point 'abbreviated as') and a point where the center distance is relatively far (hereinafter, abbreviated as 'standard position').

Each of the reel bases 22 and 32 is provided with gears 22a and 32a at its periphery, and on the main base 10 when the reel base 22 on the supply side is in the standard position. The first transmission gear 14 meshing with the gear 22a of the base 22 and the second transmission gear 16 meshing with the first transmission gear 14 are rotatably provided.

On the other hand, between the reel base (22, 32) is provided with an idle drive gear 42 that receives power from the capstan motor (40).

The idle drive gear 42 is fixed to the support shaft 44 which is movably inserted into the guide hole 18 formed in the main base 10, wherein the idle drive gear 42 is the main base ( 10) will be located at the bottom.

In addition, an idle gear 46 which rotates together with the support shaft 44 is fixed to the upper end of the support shaft 44 protruding to the upper surface of the main base 10.

And according to the present invention, one side is rotatably fixed to the upper end of the support shaft 44, the other side is provided with an idle plate 48, the reel drive gear 50 is rotatably fixed.

The reel driving gear 50 is meshed with the idle gear 46 to receive power. At this time, the idle gear 46 and the idle plate 48 is configured to have a predetermined friction force, when the reel drive gear 50 is in a free state, the idle plate 48 is the rotation direction of the idle gear 46 It is configured to achieve rotation according to.

In addition, one end of the guide hole 18 formed on the main base 10 is a variable end (upper part in the drawing) which is located in the center between the supply reel 20 and the take-up reel 30, The other end provides a standard end (lower in the drawing) which is located at the center between the winding reel 30 and the second transmission gear 16.

On the other hand, the present invention is provided with a feed shaft 64 that is rotated by the drive motor 62 on the main base 10, the linear reciprocating movement according to the rotation of the feed shaft 64 on the feed shaft 64 The slider 66 is provided.

In addition, in the present invention, one side is connected to the lower end of the support shaft 44, the other side is provided with a drive lever 68 connected to the slider 66 linearly reciprocating by the feed shaft (64). According to the present invention, the slider 66 actuates the drive lever 68 such that the support shaft 44 moves between the variable end and the standard end of the guide hole 18 during movement.

Referring to the operating state of the present invention having such a configuration as follows.

First, as shown in FIG. 3A, when the supply reel 20 and the take-up reel 30 are in the variable position, the support shaft 44 is positioned at the variable end of the guide hole 18 by the drive motor 62. Done. As the capstan motor 40 is driven, the idle driving gear 42 is rotated. As a result, the support shaft 44 is rotated and the idle gear 46 is rotated. In addition, the idle plate 48 having a predetermined frictional force with the idle gear 46 is rotated in the rotational direction of the idle gear 46 to move the selected transmission gear to the reel base side to be engaged with the selected gear. At this time, the rotation direction of the idle plate 48 is determined by the rotation direction of the capstan motor 40.

For example, when the capstan motor 40 rotates clockwise in a state where the supply reel 20 and the take-up reel 30 are in the variable position, the idle plate 48 is shown in solid line in FIG. 3A. Is rotated clockwise while the reel drive gear 50 is moved to the take-up reel 30 to drive the take-up reel 30 to perform a special regeneration mode, such as regeneration or double speed regeneration. In addition, when the capstan motor 40 is rotated counterclockwise, the idle plate 48 is rotated counterclockwise as shown in the imaginary line, and the reel driving gear 50 is supplied to the supply reel 20 side. Move to rewind or reverse play mode.

Meanwhile, as shown in FIG. 3B, when the supply reel 20 and the take-up reel 30 are in the standard position, the first transfer gear 14 provided on the main base 10 when the supply reel 20 moves. ) Is fitted. At the same time, when the feed shaft 64 is rotated by the driving of the drive motor 62, the slider 66 coupled to the feed shaft 64 is moved in the selected direction. Accordingly, the driving lever 68 connected to the slider 66 moves downward to move the support shaft 44 to the standard end of the guide hole 18.

Thus, in the state in which the support shaft 44 is moved to the standard stage by the capstan motor 40 in the state where the support shaft 44 is moved to the standard stage, the capstan motor 40 is driven. As a result, the idle gear 46, the idle plate 48, and the reel drive gear 50 achieve the same operation.

At this time, when the capstan motor 40 is rotated in the clockwise direction, as shown in the solid line of FIG. 3, the reel driving gear 50 is engaged with the gear 32a of the winding side reel base 32 as described above. When the counterclockwise rotation is achieved, the virtual line is engaged with the second transmission gear 16 as shown in the drawing to transmit power to the supply side through the first transmission gear 14.

As described above, the V-idal idle gear driving device according to the present invention fixes the relative position of the idle gear and the transmission gear which are powered by the capstan motor with the idle plate and simultaneously engages the idle gear and the transmission gear. The first and second transmission gears meshing with the gears of the reel base when the supply reel or the take-up reel on the main base are in the standard position, and also supply the transmission gears supported by the idle plate in the variable position. And a moving means for selectively shifting the position between the take-up reel and the feed reel in the standard position and the second transmission gear to compensate for the variable distance for the reel movement, so that the idle plate is selected according to the rotation of the capstan motor. Rotation to the power supply to the power supply and reel to move the variable position and the standard position will be.

Claims (2)

V-Cal which rotatably supports the feed reel 20 and the take-up reel 30 and has reel bases 22 and 32 that move the variable position and the standard position so that cassette tapes having different sizes can be used. A first transmission gear 14 which is rotatably fixed on the main base 10 and meshes with the gear 22a of the supply side reel base 22 when the supply reel 20 is in the standard position, A second transmission gear 16 rotatably fixed on the main base 10 and engaged with the first transmission gear 14, and a support shaft 44 rotatably fixed on the main base 10; Idle drive gear 42 is fixed to the lower end of the power transmission from the capstan motor 40 and the main reel (10) is formed on the main base 10, the supply shaft (20) is provided in the variable position and It is possible to selectively move between the take-up reel 30 or between the take-up reel 30 and the second transfer gear 16 in the standard position. A guide hole 18, a moving means 60 connected to the support shaft 44 to provide a force to move the support shaft 44 in the guide hole 18, and the support shaft 44 An idle gear 46 fixed to the upper end to receive the rotational force of the idle drive gear 42 and a capstan rotatably fixed to the upper end of the support shaft 44 so that one side has a predetermined friction force with the idle gear 46. The idle plate 48 which rotates in accordance with the rotational direction of the motor 40 and the feed reel 20 which is rotatably fixed to the idle plate 48 and meshes with the idle gear 46 at a variable position. And a reel driving gear selectively engaged with the winding reel 30 or the winding reel 30 at the standard position and the second transmission gear 16 to transmit power to the supply reel 20 and the winding reel 30 ( 50) idle gear drive device of V-C. According to claim 1, wherein the moving means 60 is a drive motor 62 is fixed to the main base 10, the feed shaft 64 rotated by the drive motor 62, and the feed shaft 64 The drive motor 62 consists of a slider 66 which is linearly reciprocated by the rotation of the motor, and one side is connected to the lower end of the support shaft 44, and the other side is connected to the slider 66. An idle gear driving device of V-C, characterized by a force such that the driving lever 68 moves the support shaft 44 along the guide hole by the rotation of the rotary shaft.