JPS623452A - tape recorder - Google Patents

Abstract

PURPOSE:To save the electric power and to operate continuously in accordance with a request by constituting the titled recorder to change over the condition for automatically stopping the operation with the continuous operation after a magnetic tape completes the constant speed travelling of one reciprocation. CONSTITUTION:When a change-over knob 37 is shifted in the direction of an arrow from the condition in which the constant speed travelling is executed in the second direction E of the magnetic tape, an operating part 37a is abutted on an operating edge part 32b of a releasing plate 32, and the releasing plate 32 is shifted in the A direction of an arrow against a spring 33. Consequently, a tip part 32a is separated from a lock part 25a of a lock plate 24, even when a forward and reverse lever 28 is turned in the counter-clock-wise direction, the locking to the lock part 25a of a lock plate 25 of a jaw part of a head substrate 19 is not released. For such a reason, the constant speed travelling condition in the first direction is obtained. When the forward and reverse lever 28 is turned from the constant speed travelling condition in the first direction in the clock-wise direction, the constant speed travelling condition in the second direction is obtained again.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a reverse type tape recorder that runs a magnetic tape at a constant speed in first and second directions.

(Prior Art) In recent years, reverse type tape recorders have become popular, allowing the reproduction of side A and side 8 of a cassette tape or the like without having to turn over and reinstall the tape recorder.

In conventional reverse type tape recorders, when the magnetic tape reaches the end of running at a constant speed in the first direction, it automatically switches to the second direction, and when the constant speed running in the second direction comes to the end, the magnetic tape starts running again at the same speed. 1, and operations such as reproduction will continue unless a stop operation is performed.

(Problem to be Solved by the Invention) With the above configuration, if you forget to stop the music or go to bed while listening to music, etc., it will continue to operate even when you are not actually listening to it, consuming power. There were drawbacks such as wear and tear on the rotating parts.

Particularly in portable tape recorders that use dry cell batteries as a power source, these dry cell batteries are consumed rapidly and are uneconomical.6 The purpose of the present invention is to eliminate the drawbacks of the conventional technology, to have a simple structure, to operate magnetically without continuous operation, and to record magnetic tape. To provide a tape recorder which can automatically switch between a state of stopping and a state of continuous operation after one round trip at a constant speed.

(Means for Solving the Problems) The tape recorder of the present invention includes a tape running means for running a magnetic tape at a constant speed in a first and a second direction, and a magnetic head, and the magnetic head is moved at a constant speed. A head substrate that reciprocates between a first position where it contacts the magnetic tape during running and a second position where it is retracted from the first position and is in a stopped state, and a holding means that holds the head substrate at the first position. and a switching means for switching the first and second constant speed running directions of the magnetic tape, and a release means interlocked with the switching means, and the switching means switches the constant speed running direction of the magnetic tape from the second direction. so that the holding means is released from the holding means by the releasing means only when switching to the first direction;
The head substrate and the release means are associated with each other, and a switching operation means is provided for switching the release of holding of the holding means by the release means between an operating state and a non-operating state.

(Function) With the above configuration, the present invention allows the switching operation means to
When the release means activates the holding release operation of the holding means, the release means interlocked with the switching means releases the head substrate of the holding means only when switching from the constant speed running state in the second direction to the first direction. When the hold is released to bring it to a stopped state, and when it is brought to a non-operating state, continuous operation can be achieved.

(Example) An example of the present invention will be described based on FIGS. 1 to 5.

FIG. 1 shows the tape recorder of the present invention from a constant speed running state in a first direction to a stopped state.

In the same figure, reference numeral 5 and 1 denote a first capstan, which is rotatably provided on a bearing (not shown) and is attached to a first flywheel 2.
It has an integrated structure. Reference numeral 3 denotes a second capstan, which is rotatably mounted on a bearing (not shown) and has a second flywheel 4 integrally therewith.

5 is suspended by a belt so that a motor 6 rotates clockwise, the first capstan 1 rotates counterclockwise, and the second capstan 3 rotates clockwise. Reference numeral 7 denotes an intermediate pulley, which is rotatably provided on a shaft 8 and guides the belt 5. Reference numeral 9 denotes a first pinch roller, which is rotatably provided on the shaft 11 of the first pinch roller lever 10. 1st
The pinch roller lever lO is swingably provided on the shaft 12 and biased clockwise by a spring (not shown).
It has a control pin 13. Reference numeral 14 denotes a second pinch roller, which is rotatably provided on the shaft 16 of the second pinch roller lever 15. The second pinch roller lever 15 is swingably mounted on a shaft 17, biased counterclockwise by a spring (not shown), and has a second control pin 18. Reference numeral I9 denotes a head substrate on which the magnetic head 20 is mounted and has a push button 21, is slidably provided on a shaft 22, 23, and is biased by a spring 24 in the direction indicated by the arrow. The tip 19a of the head substrate 19 controls the first control pin 13 of the first pinch roller lever lO, and the hole 19b controls the second control pin 13 of the second pinch roller lever 15.
It is designed to control the control pin 18 of. Reference numeral 25 denotes a lock plate, which is slidable on shafts 23 and 26 and biased in the direction of arrow B by a spring 27.
The jaw portion 19c of 9 is locked. Reference numeral 28 denotes a right-reverse lever, which is swingably provided on a shaft 29.
a is connected to the normal/reverse rod 30, and the other end 28b is connected to a normal/reverse switching means using a cam (not shown) or the like. The opposite rod 30 is connected to one end 28a of the opposite lever 28 and is slidably provided at @31, and the first control hole 30a connects the first control pin 13 to the second control hole. 30
b is adapted to control the second control pin 18.

32 is a release plate, and shaft 29. One end 28a of the opposite lever 28
It is slidably provided on the shaft 29 and rotatably provided on the shaft 29, and is biased in the direction of the arrow IE17c by the spring 33.
The control hole portion 32a is configured to penetrate through the bent portion 19d of the head substrate 19. 34 and 35 are the first and second reel stands, and the magnetic tape of the tape cassette 36 (not shown)
is wound onto a reel hub (not shown). , 37 is a switching knob, which is slidably provided on the housing 38, and is set to the state shown in FIG. 1 by clicking means (not shown).

The first position and the second position, which is the state shown in FIG. 5, are held by reciprocating motion and click means (not shown).

The actuating portion 37a comes into contact with the operating end portion 32b of the release plate 3z.

The operation of the tape recorder configured as described above will be explained.

First, the constant speed running operation in the first direction will be explained.

As shown in FIG. 2 from the stopped state of FIG. is locked and held in the first position as shown in FIG.

When the head substrate 19 is as described above, the magnetic head 20
contacts a magnetic tape (not shown), and the first pinch roller 9 presses against the first capstan 1 to move the magnetic tape (not shown) in the arrow direction (first direction). Drive at a constant speed.

At this time, the second pinch roller 14
The second control pin 18 is controlled and separated from the second capstan 3 by the second control hole 30b.

Similarly, the release plate 32 is moved in the direction of arrow C by the bias of the spring 33, but the step 32c of the control hole 32a comes into contact with the bent part 19d of the head board 19, as shown in FIG. In this state, the distal end portion 32d is separated from the lock portion 25a of the lock plate 25.

Next, the constant speed running operation in the second direction will be explained.

From the constant speed running state in the first direction shown in FIG. 2, the forward/reverse lever 2
8 clockwise to the state shown in FIG. When the normal/reverse lever 28 moves as described above, the normal/reverse rod 30 moves in the direction of arrow E, and the second pinch roller 14 moves to the second
The magnetic tape (not shown) runs at a constant speed in the direction of arrow E (second direction). At this time,
The first pinch roller 9 is controlled by the first control pin 13 by the first control hole 30a of the opposite rod 30.
is separated from the capstan 1 of.

Further, the release plate 32 is also rotated clockwise in the same manner as the right-reverse lever 28, and the stepped portion 32 formed by the bent portion 19d of the head base plate 19 is rotated clockwise.
When the block c is released, move in the direction of arrow C at the same time and move to the third
It will be in the state shown in the figure.

When the release plate 32 becomes as shown in FIG. 3, the tip end 32d can come into contact with the lock portion 25a of the lock plate 25.

Next, the automatic stopping operation when switching from the constant speed running operation in the second direction to the constant speed running operation in the first direction will be explained.

From the constant speed traveling state in the second direction shown in FIG. 3, the forward/reverse lever 28 is
When it is rotated clockwise, it returns to the constant speed running state in the first direction shown in FIG. The lock plate 25 is in contact with the lock portion 25a of the spring 27.
is moved in the direction of arrow F against the

At this time, the step part 32c of the control hole part 32a of the release plate 32 is controlled by the bent part 19d of the head board 19, and the spring 3
However, until the locking portion 25a of the locking plate 25 and the jaw portion 19c of the head substrate 19 are disengaged, the distal end portion 32d of the release plate 32 and the locking plate 25 The lock portion 25a is brought into contact with the lock portion 25a. When the lock portion 25a of the lock plate 25 and the jaw portion 19c of the head substrate 19 are disengaged, the head substrate 19 is moved in the direction of the arrow A by the spring 24 to the second position, and the magnetic head 20 The first and second pinch rollers 9 and 14 are separated from the magnetic tape (not shown), and the first and second pinch rollers 9 and 14 are located at the tip end 19a of the head substrate 19.

The first and second control pins 13.18 are controlled by the hole portion 19b so that they are separated from the first and second capstans 1, 3, and are in a stopped state. At this time, the release plate 32 is
As the head substrate 19 moves, it is moved in the direction of arrow A by the bending portion L9d.

Next, the stopping operation from the constant speed running state in the second direction will be explained.

When the stop operating means (not shown) is operated from the constant speed running state in the second direction shown in FIG. The locking of the jaw portion 19c of 19 is released, resulting in the stopped state shown in FIG.

When the push button 21 is operated from the stopped state shown in FIG. 4 to move the head base plate 19 in the direction of arrow C against the spring 24, the constant speed running state in the second direction shown in FIG. 3 is resumed.

Next, continuous constant speed running operations in the first and second directions will be explained.

From the constant speed running state in the second direction in Figure 3, turn the switch knob 3.
7 and moves in the direction of arrow A, the actuating portion 37a comes into contact with the operating end 32b of the release plate 32, and the release plate 32
It is moved in the direction of arrow A against the force of the spring 33, resulting in the state shown in FIG. When the release plate 32 is moved as described above,
Even if the tip portion 32d is separated from the lock portion 25a of the lock plate 25 and the forward/reverse lever 28 is rotated counterclockwise by the forward/reverse switching means using the cam (not shown) or the like, the head board 19 is Lock portion 25a of lock plate 25 of jaw portion 19c
The lock will not be released.

Therefore, the vehicle is in a constant speed running state in the first direction.

When the forward/reverse lever 28 is rotated clockwise from the constant speed traveling state in the first direction by the forward/reverse switching means using the cam (not shown) or the like, the forward/reverse lever 28 is rotated again in the second direction shown in FIG. The vehicle will be running at a constant speed. In this way, continuous constant speed running operation in the first and second directions is performed.

As described above, according to this embodiment, the magnetic tape (not shown) is moved at a constant speed in the first direction and the second direction.
, the second capstans 1, 3, the first and second pinch rollers 9, 14, and the magnetic head 20 are mounted, and the magnetic head 20 contacts the magnetic tape (@not shown) during constant speed running. and a first position where the magnetic head 20 is separated from the magnetic tape (not shown) by moving the first and second pinch rollers 9 and 14 between the first and second caps. A head substrate I9 that reciprocates in a second position spaced apart from stans j2 and j3, and this head substrate 19 is
The lock plate 25 is held at the position of 1, and the forward and reverse directions are driven by a forward/reverse switching means using a cam (not shown) or the like that switches between the first and second constant speed running directions of the magnetic tape (not shown). A release plate 3 interlocked with the reverse lever 28 and the forward lever 28
2, and the constant speed running of the magnetic tape (not shown) in the second direction is switched to the first direction by the forward/reverse switching means using the cam (not shown) or the like and the forward/reverse lever 28. The bent portion 19d of the head substrate 19 controls the hole 32a and step portion 32c of the release plate 32 so that the release plate 32 releases the head substrate 19 from the lock plate 25. Head board 1 of lock plate 25
By providing a switching knob 37 for switching the holding release of 9 between an operating state and a non-operating state, it is possible to automatically stop the operation without continuous operation with a simple configuration, and also enable continuous operation. .

Furthermore, when traveling at a constant speed in the first direction, the tip 32d of the release plate 32 is separated from the locking portion 25a of the lock plate 25, so that when the operation is performed from a stopped state to a constant speed traveling state in the first direction. The jaw portion 19c of the head substrate 19 is securely locked to the lock portion 25a of the lock plate 25.

(Effects of the Invention) According to the present invention, with a simple configuration and without continuous operation,
The magnetic tape can be switched between automatically stopping after one round trip at a constant speed and continuous operation, so even if you forget to stop and leave it unattended, it will automatically stop.

It is economical because there is no need to waste electricity.

It also has great practical effects, such as being able to operate continuously when you want to listen to background music or the like continuously.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a tape recorder according to an embodiment of the present invention from a constant speed running state in a first direction to a stopped state; FIG. 2 is a plan view showing a constant speed running state in the first direction; Third
The figure is a plan view showing the constant speed running state in the second direction, FIG. 4 is a plan view showing the constant speed running state in the second direction to the stopped state, and FIG. 5 is a plan view showing the continuous operation state. It is. 1.3...capstan, 2,4...flywheel, 5...belt, 6...motor, 7...intermediate pulley, 8, 11, 12, 16,
17,22,23゜26.29.31...axis, 9,
14... Pinch roller, 10.15... Pinch roller lever, 13.18... Control pin, 19...
・Head board, 19a, 32d... tip, 19b
, 30a, 30b-hole, 19cm jaw, 19d
...Bending part, 20...Magnetic head, 21...Push button, 24, 27.33...Spring, 25...Lock plate, 25a...Lock part, 28...Reverse lever,
30...Reverse Rondo, 32...Release plate, 32a...
・Hole of release plate, 32b... Operating end, 32c...
Stepped portion, 34. 35... Reel stand, 36... Tape cassette, 37... Switching knob, 37a... Operating section, 38... Housing. Patent applicant: Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] a tape running means for running the magnetic tape at a constant speed in first and second directions; a first position on which a magnetic head is mounted and the magnetic head is brought into contact with the magnetic tape when running at the constant speed; a head substrate that is reciprocated from a first position to a second position where it is in a stopped state; a holding means that holds the head substrate at the first position; and a first and second position of the magnetic tape. a switching means for switching the speed running direction;
A release means interlocked with the switching means is provided, and the release means releases the holding from the holding means only when the switching means switches the constant speed running direction of the magnetic tape from the second direction to the first direction. A tape recorder further comprising a switching operation means that associates the head substrate with the release means and switches the release of holding of the holding means by the release means between an operating state and a non-operating state.