JPH0765447A - Recording or reproducing device - Google Patents

Abstract

PURPOSE:To make a recording or a reproducing device thin by simplifying the constitution of a tape driving mechanism. CONSTITUTION:A feeding side reel base 1 is provided with a feeding reel gear 4 having a limiter torque means which limits the driving force from a motor with the sliding movement of a felt 12 and a feeding reel disk 2 which receives the brake by a tension belt 7. Further, a take-up side reel base 8 is provided with a take-up reel gear 11 having a limiter torque means which limits the driving force from the motor with the sliding movement of the felt 12 and a take-up reel disk 9 which takes in the driving force from the motor without limiting the force. Then, a swing gear 14 engaged with a driving gear being driven by the motor is constituted to be movable to the direction of the feeding side reel base 1, to the direction of the take-up side reel base 8 and further to upward and downward directions as well by being supported by a swing arm 14 at its shaft. At the time of the rapid traverse of a magnetic tape, the take-up reel disk 9 is driven by the swing gear 14 and at the time of the rewinding of the tape, the feeding reel gear 4 is driven by the swing gear 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording or reproducing apparatus such as a video tape recorder (hereinafter referred to as VTR) for recording or reproducing a signal on a tape-shaped recording medium.

[0002]

2. Description of the Related Art In a conventional VTR or the like, when a tape cassette containing a recording tape is mounted in a device, a reel of a recording tape cassette is engaged with a pair of reel bases of a tape drive mechanism and a tape loading mechanism is used. The recording tape is pulled out from the tape cassette and is ready for recording and reproduction. Then, the tape drive mechanism feeds the recording tape from the supply-side reel to the winding-side reel at a predetermined speed to perform recording or reproduction by the magnetic head.

The tape drive mechanism can also perform a fast-forward operation for moving the recording tape from the supply-side reel to the take-up reel at high speed, and a rewind operation for moving the recording tape from the take-up reel to the supply-side reel at high speed. It has become a structure.

The above-mentioned fast-forwarding operation and rewinding operation are carried out by a reel stand having a limiter torque means for feeding the recording tape with a capstan and a pinch roller provided in the middle of the tape loading mechanism and limiting the driving force from the motor by sliding. The recording tape is wound, or the recording tape is fed by a reel stand directly connected to the motor without using the limiter torque means.

FIG. 3 is a schematic view of a side surface of a main part showing an example of the conventional reel stand. A limiter torque drive unit 26, a motor direct drive unit 27, and a tension belt winding unit 28 are provided on the outer peripheral portion of the base of the supply-side reel stand 1, and the drive gear 14 is provided on the supply-side reel stand 1 or the take-up side. It is configured such that the transmission destination of the driving force can be selected by moving in the reel base 8 direction and the vertical direction.

3 is a spring for pressing the reel receiving portion 1,
Reference numeral 7 is a tension belt that brakes the supply-side reel base 1 to bring the recording tape into an appropriate tension state during recording and reproduction.

[0007]

However, in the structure of the conventional tape drive mechanism described above, for example, high-speed feeding by the capstan and the pinch roller has a problem that power loss is large and the winding speed cannot be increased.

Further, in the structure shown in FIG. 3, since a large torque is required for the reel base, it is necessary to drive the reel base with the limiter torque and drive the motor directly. Therefore, as shown in the figure, the limiter torque drive is used. Portion 26, motor direct drive portion 27, and tension belt winding portion 2
8 and 3 parts are required, the reel stand becomes thicker, more space is required for the drive mechanism, and the device size is reduced.
There was a problem that it was difficult to reduce the thickness.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a recording or reproducing apparatus which can be made thin and compact by simplifying the structure of a tape drive mechanism. Is.

[0010]

Therefore, the recording or reproducing apparatus according to the present invention comprises a take-up reel stand and a supply reel stand that engage with reels of a tape cassette containing a tape-shaped recording medium. A recording or reproducing device for recording / reproducing signals on / from a tape-shaped recording medium, wherein limiter torque means and braking means for limiting driving force from a motor provided on a supply side reel stand by sliding, winding side reel Limiter torque means for limiting the driving force from the motor provided on the base by sliding and direct drive means for taking in the drive force from the motor without limiting it, and selecting the limiter torque means and the direct drive means from the motor By a tape drive mechanism equipped with a selection drive means for transmitting a driving force, a tape-shaped recording medium is fed at a predetermined speed for recording and reproducing, And fast fast forward, by the structure and performing the rewinding feed, it is intended to achieve the above object.

[0011]

With the above-described structure, the high-speed rewinding feed from the take-up reel stand toward the supply reel stand has a general limiter torque that limits the driving force from the motor provided on the supply reel stand by sliding. Since it is large, it can be carried out by connecting the selective driving means to the means and without driving the capstan and the pinch roller. In addition, since the limiter torque of the take-up reel base is generally small, high-speed rapid feed from the supply-side reel stand to the take-up reel stand does not depend on the drive of the capstan and pinch roller, but the motor of the take-up reel stand is driven. It is possible to connect the selective drive means to the direct drive means for taking in the drive force from the drive without limiting. With the above structure, the structure of the tape drive mechanism is simplified, and the device can be made smaller and thinner.

[0012]

EXAMPLES A recording or reproducing apparatus according to the present invention will be described below with reference to examples.

In this embodiment, by mounting a tape cassette containing a recording tape in the apparatus, a reel of the tape drive mechanism is engaged with a reel of the recording tape cassette and the recording tape is loaded by the tape loading mechanism. The tape is pulled out from the tape cassette to be in a recordable / reproducible state, and the tape drive mechanism is used to record or reproduce by a magnetic head that rotates while feeding the recording tape from the supply reel to the winding reel at a predetermined speed. .

The tape drive mechanism can also perform a fast-forward operation for moving the recording tape from the supply-side reel to the take-up reel at high speed, and a rewind operation for moving the recording tape from the take-up reel to the supply-side reel at high speed. It has become a structure.

A conventional V-type recording / reproducing signal processing mechanism is used.
The description is omitted because it conforms to the configuration of TR and the like, and the characteristic tape drive mechanism of the present embodiment will be described below.

FIG. 1 is a schematic view of a main part plane showing a tape drive mechanism of one embodiment, and FIG. 2 is a schematic view of the same side surface.

Reference numerals 1 and 8 shown in FIGS. 1 and 2 denote reel receivers each having a claw engaging with a reel and a mounting portion contacting the reel, and a supply reel disc 2 and a take-up reel disc 9 are press-fitted therein. . The supply reel gear 4 is provided between the reel receiver 1 and the supply reel disc 2, and the take-up reel gear 11 is provided between the reel receiver 8 and the take-up reel disc 9, respectively.
It is a structure having a limiter torque function by being pressed into contact with the supply reel disk 2 and the take-up reel disk 9 via.

Reference numeral 6 is a supply reel shaft, and 13 is a take-up reel shaft. A tension belt 7 is wound around the outer circumference of the supply reel disk 2, and the supply reel base is braked by a known method (not shown) to adjust the tape tension during recording / reproduction.

The swing gear 14 has a friction torque between it and the swing arm 15 by a known method, and swings in accordance with the rotation direction of the drive gear 16 driven by a motor (not shown) to supply the reel reel gear 4 or the winding reel. It can be engaged with the take-up reel gear 11.

The swinging arm 15 is moved up and down by a well-known vertical movement mechanism 17, and when it is lowered, the swinging gear 14 can engage with the gear portion on the outer periphery of the take-up reel disk 9.

Reference numeral 18 is a capstan, 19 is a recording / reproducing magnetic tape, and a pinch roller 20 is rotatably supported at one end of a pinch arm 21 rotatable about 21a. Reference numeral 22 is a pinch solenoid that engages with the other end of the pinch arm 21, and when sucked, the pinch arm 21 is rotated clockwise, and the pinch roller 20 and the capstan 18 sandwich and feed the tape 19. Reference numeral 23 is a return spring that releases pressure contact of the pinch roller 20 when the solenoid 22 releases suction, and 25 is an operation key.

Reference numeral 24 is a control circuit which attracts and releases the solenoid 22, reads the operation key 25, rotates the capstan 18 by a motor (not shown), rotates the drive gear 16 forward and backward by a motor (not shown), and moves up and down the mechanism 17. The vertical movement of the swing arm 15 is controlled and controlled. Tape 1
The right end of 9 is connected to the take-up reel receiver 8 side, and the left end is connected to each reel on the supply reel receiver 1 side.

In the above structure, when the recording or reproducing mode is operated by the operation key 25, the solenoid 22 is attracted by the control circuit 24, the capstan 18 rotates counterclockwise, and the vertical movement mechanism drives upward. When the gear 16 rotates clockwise, the swing arm 15 moves clockwise, the take-up reel gear 11 is driven and the rotational force is transmitted to the reel receiver 8 via the frictional force of the felt 12, and the capstan 18 and the pinch roller. The magnetic tape 19 sent from 20 can be wound up, and the recording / playback mode is set.

In the reverse regeneration mode, the swing arm 15 is rotated by attracting the solenoid 22, rotating the capstan 18 clockwise, holding the vertical movement mechanism upward, and rotating the drive gear 16 counterclockwise. Moves counterclockwise, the supply reel gear 4 is driven, the reel receiver 1 is rotated through the felt 5, and the magnetic tape 19 sent from the capstan 18 and the pinch roller 20 can be wound up.

In the fast-forward mode, the solenoid 22 is released to set the magnetic tape 19 in a free state, the vertical movement mechanism is held downward, and the drive gear 16 is rotated in the clockwise direction at a high speed, whereby the take-up reel disk 9 moves at a high speed. Driven,
The magnetic tape 19 can be fast-forwarded from the reel receiver 1 on the supply side to the reel receiver 8 on the winding side.

In the rewinding mode, the solenoid 22 is released to set the magnetic tape 19 in a free state, the vertical movement mechanism is held upward, the drive gear 16 is rotated counterclockwise at a high speed, and the supply reel gear 4 is driven. Thereby, the magnetic tape 19 can be rewound to a steady state at high speed.

(Other Embodiments) In the above embodiment, the tape path is changed at the time of fast-forwarding and rewinding.
By releasing or reducing the winding of the tape around the rotary drum, the limiter torque of the supply reel base can be set weaker.

[0028]

As described above, a motor direct connection drive means section not provided with a torque limiter is provided on the reel stand on the winding side, and fast feed is directly connected to the motor power, and rewinding is performed with the limiter torque. As a result, it is possible to increase the speed of fast-forwarding and rewinding and to reduce the thickness of the reel stand, which makes it possible to improve the performance of the device and reduce its thickness and size.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a main part of a tape drive mechanism according to an embodiment.

FIG. 2 is a schematic view of a side surface of a main part showing a tape drive mechanism of an embodiment.

FIG. 3 is a schematic view of a side surface of a main part showing a conventional tape drive mechanism.

[Explanation of symbols]

 1,8 Reel holder 2 Supply reel disc 3,10 Spring 4 Supply reel gear 5,12 Felt 6 Supply reel shaft 7 Tension belt 9 Take-up reel disc 11 Take-up reel gear 13 Take-up reel shaft 14 Swing gear 15 Swing arm 16 Drive gear 17 Vertical movement mechanism 18 Capstan 19 Magnetic tape 20 Pinch roller

Claims (1)

[Claims] 1. A recording or reproducing device for recording and reproducing a signal to and from a tape-shaped recording medium, comprising: a winding-side reel stand that engages with a reel of a tape cassette containing a tape-shaped recording medium; and a supply-side reel stand. A device, a limiter torque means and a braking means for slidingly limiting a driving force from a motor provided on a supply side reel stand, and a limiter torque means for slidingly limiting a driving force from a motor provided on a winding side reel stand. And a tape drive mechanism comprising a direct drive means for taking in the drive force from the motor without limiting, and a selection drive means for transmitting the drive force from the motor by selecting the limiter torque means and the direct drive means. Recording characterized by feeding at a predetermined speed for recording / reproducing a tape-shaped recording medium, and high-speed fast-forwarding and rewinding feeding Other playback device.