JPH0222806Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an auto-reverse tape recorder, and more specifically, an auto-reverse tape recorder having a see-saw type head switching means that is pivoted at the center and has magnetic heads on both sides. This has been improved to always operate from the forward side when starting the operation.

Conventionally, the see-saw type head switching means described above has been frequently used in center capstan type auto-reverse tape recorders, but in this type of type, the running direction of the tape starts from the forward side during the initial operation of the tape recorder. The drawback was that it was difficult to decide whether to start from the reverse side or from the reverse side, making it very inconvenient to use.

Therefore, the present invention was devised in view of the above-mentioned drawbacks, and the approximately central part of a seesaw type head chassis equipped with magnetic heads on both sides is pivotably supported on a movable chassis so as to respond to the running direction of the magnetic tape. In an auto-reverse tape recorder configured to selectively bring a magnetic head into pressure contact with a magnetic tape, the regulating member switches the head chassis to a tape forward running state in conjunction with the return operation of the movable chassis to a stopped state. The present invention provides a new auto-reverse tape recorder which is configured so that the tape is always in a tape forward running state when the tape is stopped.

An embodiment of the present invention shown in the drawings will be described in detail below.

In each figure, reference numeral 1 denotes a fixed chassis, and reel stands 4a, 4b, a capstan 5, etc., which are driven by a well-known drive means (not shown), are rotatably arranged on the fixed chassis 1.

Reference numeral 2 denotes a movable chassis, and the movable chassis 2 is arranged so as to be slidable back and forth by having its guide holes 2a, 2b, 2c engaged with guide pins 1a, 1b, 1c on the fixed chassis 1. It is something that exists. Further, on the movable chassis 2, a see-saw type head chassis 3 having a substantially doglegged shape and having forward and reverse magnetic heads H ₁ and H ₂ on both sides thereof is pivotably mounted with a pin 2d. A pinch roller P is rotatably attached to an overhanging portion 3a formed by extending and bending a substantially central rear end portion of the seesaw type head chassis 3. Further, a reversing spring 8 is disposed between a pin 6 planted at one end of the seesaw type head chassis 3 and a fixed pin 7 on the movable chassis 2, and this reversing spring 8 causes the seesaw type head chassis 3 to move as shown in the figure. When the head chassis is switched to each tape running state by a well-known head chassis switching means, it is possible to selectively take a swing position corresponding to each tape running direction. In other words, in the tape forward running state shown by arrow A, the magnetic head
In order to press the magnetic head H ₁ against the magnetic tape T, the magnetic head H 1 swings counterclockwise around the pin 2d as seen in the figure, and in the tape reverse running state shown by arrow B, the pin 2d swings counterclockwise in order to press the magnetic head H ₂ against the magnetic tape T. It is in a state where it is oscillated clockwise around 2d as seen in the figure. In addition, in both of these states, the reversing spring 8
A stopper 9 provided on the chassis 2 fixes the front edge of the seesaw type head chassis 3 by the elastic force of
It is designed to be held by bringing it into contact with a and 9b.

Reference numeral 10 denotes a regulating member provided on the fixed chassis, and the regulating member 10 changes from the tape reverse running state in which the movable chassis 2 presses the pinch roller P to the capstan 5 and the magnetic head H ₂ to the magnetic tape T to the stopped state. In the process of sliding back to the position, it collides with the trailing edge of the side of the forward magnetic head _H1 of the seesaw type head chassis 3 and presses it, eventually causing the seesaw type head chassis 3 to move against the reversing spring 8. It is designed to be rotated counterclockwise to switch to the tape forward running state position.

The auto-reverse tape recorder of the present invention has the above-mentioned configuration, and its operation will be explained next.

Fig. 1 shows the stopped state, and the head chassis 3 is rotated counterclockwise with the stopper 9b.
The movable chassis 2 is held by the reversing spring 8, that is, switched to the tape forward running state, and the movable chassis 2 retreats to a stop position where the pinch roller P and the magnetic head _H1 are separated from the capstan 5 and the magnetic tape T, respectively. It is something that In this state, the regulating member 10 is not in contact with the head chassis 3.

By pressing a playback button (not shown) or the like, the movable chassis 2 is slid forward by a well-known means (not shown), and the pinch roller P is pressed against the capstan 5 to move the magnetic tape T in the direction of arrow A. Magnetic head for driving and forwarding
_H1 is pressed against the magnetic tape T, and the tape is in a forward running state as shown in FIG.

In this state, when the tape running direction selection button (not shown) is operated and the tape running state is switched to the tape reverse running state by a well-known means (not shown), the head chassis 3 is rotated clockwise against the reversing spring 8. Due to the reversal action of the spring 8, the front edge of the head chassis 3 where the reverse magnetic head _H2 is located comes into contact with the stopper 9a and is locked, and the reverse magnetic head _H2 is pressed against the magnetic tape T. T is made to run in the direction of arrow B, resulting in a tape reverse running state as shown in FIG.

Furthermore, by operating a stop button (not shown) in the tape reverse running state to stop the tape, the pinch roller P and reverse magnetic head can be stopped.
H ₂ respectively capstan 5 and magnetic tape T
As the movable chassis 2 slides back to the stopped state in order to increase the separation, the forward magnetic head of the head chassis 3 is moved as shown in FIG.
The rear edge of H ₁ collides with the regulating member 10 and is eventually pressed by it, so that it swings counterclockwise against the reversing spring 8, and when it has rotated a predetermined amount, the reversing spring 8
By the reversing operation, the front edge of the head chassis 3 is rotated until it is stopped by the stopper 9b, and the head chassis 3 is switched to the tape forward running state and then comes to a stopped state.

It goes without saying that when the movable chassis 2 is returned to the stop position by operating a stop button (not shown) in the tape forward running state, the regulating member 10 has no effect on the seesaw type head chassis 3.

Therefore, according to the above structure, when the movable chassis 2 is at the stop position, the seesaw type head chassis 3
is configured so that the tape is always running forward.

As described above, the present invention is equipped with a see-saw type head chassis on a movable chassis that is arranged to be able to slide back and forth between the operating position and the stop position, and swings in a seesaw type according to the tape running direction to control the left and right magnetic heads. In an auto-reversing tape recorder that is configured to switch, the seesaw type headshaft is always switched to a tape forward running state in a stopped state, regardless of the tape running state in any direction, so that playback after stopping is possible. When performing (or recording) operation, the tape always starts from the tape forward running state, there is no possibility of erroneous operation during use, and the configuration thereof is extremely simple, which has great practical benefits.

[Brief explanation of drawings]

1 to 4 are explanatory diagrams of the configuration and operation of the present invention, in which FIG. 1 is in a stopped state, FIG. 2 is in a tape forward running state, FIG. 3 is in a tape reverse running state, and FIG. indicates a state in the middle of transition from a tape reverse running state to a stopped state. Explanation of symbols, 1...Fixed chassis, 2...Movable chassis, 3...Seesaw type head chassis, 8...
... Reversing spring, 10... Regulating member, H ₁ , H ₂ ... Magnetic head.

Claims (1)

[Scope of utility model registration request] It is equipped with a movable chassis that is slidably arranged between a playback (or recording) position and a stop position, and on the movable chassis, approximately the center is pivotably supported, and on both sides of the movable chassis are forward and reverse gears, respectively. In an auto-reverse tape recorder, a head chassis equipped with a magnetic head is disposed, and the magnetic head is switched according to forward and reverse tape running through see-saw operation of the head chassis, and the head chassis is mounted on a fixed chassis behind the head chassis. A regulating member is provided for controlling the recording speed, and if the head chassis has been switched to the tape reverse running state during the course of the movable chassis sliding from the playback (or recording) position to the stop position, the regulation member By colliding with one end of the head chassis and pressing it to switch to the tape forward state, the head chassis on the movable chassis is always in the tape forward running state when the movable chassis is at a stop position. An auto-reverse tape recorder characterized by: