JPH04134748A - Video tape recorder - Google Patents

Abstract

PURPOSE:To easily move a tape guide when trouble happens to a tape loading system by electrifying only a guide loading motor when a loading switch is turned on and making the tape guide movable alone. CONSTITUTION:When some trouble happens to the tape loading system during a loading process of a tape 3, an abnormality detecting signal is outputted by an abnormality detecting sensor S to a system controller 4, and the guide loading motor M1 and a reel motor M2 are immediately stopped in their drive by the system controller 4, and thereafter no usual command signals are received. Then, in the case of necessity of moving the tape guide 2 and the like, when the loading switch SW is turned on, a command of the loading switch SW is received by the system controller 4 as a special command signal, and a driving signal is outputted to the tape guide motor M1 only without outputting a driving signal to the reel motor M2. By this method, when trouble happens to the tape loading system, the tape guide 2 is easily moved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a video tape recorder that moves a tape in a tape cassette between an unloading position and a loading position, and is used to deal with problems in the tape loading system. related to technology.

[Summary of the Invention] The present invention provides a video tape recorder in which a tape in a tape cassette is moved between an unloading position and a loading position by rotation of a guide loading motor and a reel motor. By configuring the tape guide to be able to move independently by energizing only the guide loading motor, troubles in the tape loading system can be avoided with simple changes such as installing a loading switch and changing some of the system controller software. When this occurs, the tape guide can be easily moved by simply turning on the loading switch.

[Prior Art and Problems to be Solved by the Invention] A general video tape recorder has a guide loading mechanism and a reel mechanism. The guide loading mechanism displaces the tape guide between an unloading position and a loading position by the rotational force of the guide loading motor. The reel mechanism has a reel motor, and the reel of the tape cassette is rotated by the rotational force of the reel motor. The guide loading motor and the reel motor are controlled by a system controller, and the system controller controls the motors and the like using various command signals. Further, the output of the abnormality detection sensor is input to the system controller, and the abnormality detection sensor detects the number of revolutions of the reel motor, etc., and notifies the system controller of an abnormality if there is an abnormality in the tape loading system.

In the above configuration, if there is a tape loading command,
The system controller outputs a drive signal to the guide loading motor to move the tape guides from the unloading position to the loading position, and also outputs a drive signal to the reel motor so that the tape in the tape cassette is guided by the tape guide and pulled out. The reels are spun. Also, when a tape unloading command is issued, a drive signal is output to the guide loading motor to move the tape guide from the loading position to the unloading position, and a drive signal is output to the reel motor to move the tape as the tape guide moves. The reel is rotated so that it is rewound into the cassette. During the above process, if any trouble occurs in the tape loading system, such as the tape getting caught on other parts, the abnormality detection sensor detects the abnormality. Then, the system controller immediately stops driving the guide loading motor and reel motor, and no longer accepts normal button commands. This allows tape damage to be kept to a minimum.
After that, visually check the trouble status and move the tape guide to fix any tape snags. For this reason, in the past, a separate gear was added to the gear system of the guide loading mechanism so that it could be turned by hand, or the gear of the guide loading mechanism itself was designed so that it could be turned with a screwdriver, etc. This was a major constraint.

Further, when a worm gear with a small advance angle is used in the guide loading mechanism, the work is extremely troublesome unless the worm gear is removed or the worm gear itself is turned by hand.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a video tape recorder in which the tape guide can be moved by simply turning on the loading switch when trouble occurs in the tape loading system by making simple design changes. .

[Means for Solving the Problems] A video tape recorder of the present invention for solving the above problems includes a guide loading mechanism that displaces a tape guide between an unloading position and a loading position by the rotational force of a guide loading motor; a reel mechanism that rotates the reel of the tape cassette with the rotational force of the reel motor;
A video tape recorder comprising the guide loading motor and a system controller for controlling rotation of the reel motor, wherein a loading switch is provided, and when the loading switch is turned on, the system controller energizes only the guide loading motor. The guide loading mechanism is configured to be able to operate independently.

[Function] If there is any trouble in the tape loading system, judge the situation and if it is necessary to move the tape guide, turn on the loading switch and only the guide loading motor will be energized and the tape guide will move. .

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a video tape recorder (VTR) showing one embodiment of the present invention. In FIG. 1, a video tape recorder has a cassette loading mechanism and a tape loading mechanism. The cassette loading mechanism is configured to be able to displace the tape cassette 1 between a cassette insertion position and a cassette mounting position, and FIG. 1 shows the tape cassette 1 in the cassette mounting position.

The tape loading mechanism consists of a guide loading mechanism and a reel mechanism. The guide loading mechanism consists of a guide loading motor M1 and a guide moving system that moves the tape guides 2 by the rotational force of the guide loading motor M1. It is configured to be displaced between loading positions shown by dashed lines at . The reel mechanism consists of a reel motor M2 and a power transmission system that transmits the rotational force of the reel motor M2 to the pair of reels 1a of the tape cassette 1, and is configured so that the pair of reels 1a can be rotated individually or simultaneously in a desired direction. has been done. or,
The abnormality detection sensor S detects the rotation speed of the reel motor M2, the rotation speed of the capstan motor (not shown), etc., and outputs an abnormality detection signal to the system controller 4 if there is an abnormality in the tape 3 loading system. . In addition to the above, various command signals are input to the system controller 4, and the system controller 4 controls the driving of the guide loading motor M1, the reel motor M2, etc. as shown in the following actions based on the input command signals. do. or,
The system controller 4 has a loading switch SW.
The system controller 4 is configured to output a drive signal only to the guide loading motor M1 when the loading switch SW is turned on.

The operation of the above configuration will be explained below.

When the tape cassette 1 is in the cassette mounting position and a tape loading command is issued, the system controller 4
is guide loading motor M.

A drive signal is output to the reel motor M2 to move the tape guide 2 from the unloading position shown by the solid line in FIG. 1 to the loading position shown by the dashed-dotted line in FIG. The reel 1a rotates so that the tape 3 of the cassette 1 is pulled out, and the tape 3
is guided by the tape guide 2 and moved from the unloading position shown by the solid line in FIG. 1 to the loading position shown by the dashed dot line in FIG.

When there is a tape unloading command in this loading position, the system controller 4 operates the same guide loading motor M1 and reel motor M2 as described above.
A driving signal opposite to the above direction is outputted to move the tape 3 together with the tape guide 2 from the loading position shown by the dashed line in FIG. 1 to the unloading position shown by the solid line in FIG.

In the process of loading the tape 3, if any trouble occurs in the tape loading system such as the tape 3 getting caught on another item that does not contribute to loading, the abnormality detection sensor S outputs an abnormality detection signal to the system controller 4.

Then, the system controller 4 immediately stops driving the guide loading motor M1 and the reel motor M2 and no longer receives normal command signals. The repair person visually determines the trouble situation and turns on the loading switch SW if it is necessary to move the tape guide type 2. Then, the system controller 4 accepts the loading switch SW command as a special command signal, outputs a drive signal only to the tape guide motor M1 without outputting a drive signal to the reel motor M2, and only the tape guide 2 moves. do. As a result, the tape guide 2 moves to a position where there is no problem in eliminating the jamming of the tape 3, and the repair person can easily correct the jamming of the tape 3.

In this embodiment, the tape guide 2 is configured to be moved by the loading switch SW, but it would be more convenient if the tape guide 2 was configured to be able to specify the direction of movement as well.

[Effects of the Invention] As described above, according to the present invention, a loading switch is provided in a video tape recorder that moves a tape in a tape cassette between an unloading position and a loading position by rotation of a guide loading motor and a reel motor. When this loading switch is turned on, electricity is applied only to the guide loading motor and the tape guide can be moved independently, so it can be done simply by adding a loading switch and changing some of the system controller software. When trouble occurs in the tape loading system, the tape guide can be easily moved by simply turning on the loading switch.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a VTR showing an embodiment of the present invention. Ml...Guide loading motor, M2...Reel motor, ■...Tape cassette, 1a...Reel, 2...Tape guide, 4...System controller, SW...Loading switch.

Claims (1)

[Claims] (1) a guide loading mechanism that uses the rotational force of a guide loading motor to displace the tape guide between an unloading position and a loading position; and a reel mechanism that rotates the reel of a tape cassette using the rotational force of a reel motor;
The video tape recorder includes a system controller that controls the rotation of the guide loading motor and the reel motor, and a loading switch is provided, and when the loading switch is turned on, the system controller energizes only the guide loading motor. A video tape recorder characterized in that the guide loading mechanism is configured to operate independently.