JPH0232696B2 - TEEPUREKOODA - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a tape recorder configured to prevent abnormal operations from occurring when operation buttons are operated simultaneously.

Conventional Structures and Their Problems In recent years, the structure of tape recorders has been simplified, and attempts have even been made to reduce costs by omitting functions. However, in order to avoid quality problems, the operation system must be configured so that there is no logical contradiction when simultaneous operations are performed, for example.

Conventionally, in playback and fast-forward operations, when both are operated at the same time, the rotation system for playback and the rotation system for fast-forward are different, and various measures have been taken to prevent the two rotation systems from overlapping.

One method is to provide a blocking member in the operating system so that the operating buttons cannot be pressed at the same time. However, this method requires a large number of parts for the blocking member itself, and there is a limit to the strength with which it can be blocked.

Another configuration is that if the operation buttons are pressed at the same time, a queue/review will occur.
A fast forward button moves the head board to bring the head into contact with the tape, and the rotation system gives priority to fast forwarding. However, even with this configuration, it is necessary to have a double structure so that the head board can be moved during playback and fast forwarding, and a member for moving the head board is also required, making the configuration complicated and increasing weight. Ta.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a simple, compact and lightweight tape recorder configured to give priority to playback when playback and fast-forwarding are operated at the same time.

Structure of the Invention The present invention includes a play gear for transmitting rotation in a reproducing state to a reel stand, a rotation center shaft of the play gear set up, a play idler plate having a rotation center on a base plate, and a reel stand. A fast-forwarding gear for transmitting the rotation in the fast-forwarding state and the rotation center axis of this fast-forwarding gear are installed, a fast-forwarding idler plate having a rotational center on a board, a magnetic head, and this magnetic head are fixed to perform recording and playback. The tape recorder is equipped with a head board that moves when operated, and is configured such that the play idler plate and the fast-forward idler plate can come into contact with each other at an end of the head board, and when the head board is in the stop position, the head board moves. When the head board is in the play position, the head board biases the play idler plate to interrupt the rotation transmission from the play gear to the reel stand, and when the head board is in the play position, the head board biases the fast-forward idler plate to stop the rotation transmission from the fast-forward gear to the reel stand. By interrupting
When fast-forwarding and playback are operated simultaneously, the playback state is prioritized and a highly safe tape recorder can be constructed with a simple configuration.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a plan view showing a rotating system of a tape recorder in an embodiment of the present invention.

In Fig. 1, c is a cassette tape, 1 is a mechanical chassis, 2 is a motor fixed to the mechanical chassis, 3 is an intermediate pulley, 4 is a first flywheel for forward rotation, 5 is a second flywheel for reverse rotation, and 6 is a belt stretched between the motor 2, the intermediate pulley 3, and the first and second flywheels 4 and 5; 7 is the right reel stand on the take-up side during forward rotation; 8 is the belt that rotates integrally with the right reel stand 7; Freely rotatable right reel stand gear, 9 is the left reel stand on the take-up side during reversal (supply side during forward rotation), 10 is the left reel stand gear that can rotate freely together with the left reel stand 9, 11 is installed on the mechanical chassis This is a relay gear that is rotatably attached to the shaft 12 and is always in mesh with the right reel stand gear 8.

13 is a play pulley, 14 is a play gear, and rotational force is transmitted between the play pulley 13 and the play gear 14 via a friction mechanism (not shown) that sets the winding torque. Further, the play pulley 13 and the play gear 14 are rotatably attached to a shaft mounted on a play idler plate 17, which will be described later. Reference numeral 15 denotes a rapid-forwarding pulley, and 16 a rapid-forwarding gear. Although these may be integrally rotatable, a friction mechanism for setting rapid-forwarding torque may be provided between them. Further, the rapid feed pulley 15 and the rapid feed gear 16 are rotatably attached to a shaft mounted on a rapid feed idler plate 24, which will be described later. Rotational force is transmitted to the play pulley 13 and the rapid feed pulley 15 from the pulley portion 4a of the first flyhole 4 via a belt 36.

FIG. 2 is a plan view of the parts related to the play state in the stopped state. In FIG. 2, reference numeral 17 denotes a play idler plate that supports the rotating shaft of the play pulley 13, and the shaft 1 is mounted on the mechanical chassis 1.
It is rotatably attached around 8. 19
is the play drive spring, and the play idler plate 17
Fixed on top. Note that one end thereof faces a forward/reverse switching rod 20 shown by a broken line. Although not shown, the forward/reverse switching rod 20 is biased to the left during forward rotation and to the right during reversal by a forward/reverse switching mechanism, although not shown. In FIG. 2, it is shifted to the left in normal rotation. 21 is a head board; head 22;
is fixed, and is pushed in by a play button 23 fixed at one end. In addition, the protrusion 21 of the head board 21
a and 21b contact the left and right sides of the play idler plate 17 to prevent the play idler plate 17 from rotating.

FIG. 3 is a plan view of the playing state.

FIG. 4 is a plan view of the rotating system in the normal rotation state, and FIG. 5 is a plan view of the rotating system in the reversed state.

FIG. 6 is a plan view of the portion related to the fast-forward state in the stop state. In FIG. 6, 24 is
A fast-feeding idler plate that supports the rotating shaft of the fast-feeding pulley 15, which is a shaft 2 that is installed on the mechanical chassis 1.
It is rotatably attached around 5. A recessed portion 24a is formed in this fast-forward idler plate 24. Reference numeral 26 denotes a fast-forwarding auxiliary arm, which is rotatably attached to a shaft 27 mounted on the mechanical chassis 1. When the recess 24a of the fast-forwarding idler plate 24 and the protrusion 26a of the fast-forwarding auxiliary arm engage, the fast-forwarding auxiliary arm 26 and the fast-forward idler plate are interlocked. Further, a drive spring 28 is attached to the fast-forwarding auxiliary arm 26.

29 is an FF rod for fast forwarding during forward rotation (rewinding when reversing), and 30 is a REW rod for rewinding during forward rotation (fast forwarding when reversing).
An FF button 31 and a REW button 32 are press-fitted. 3
3 is a lock rod with integrally provided protrusions 33a,
33b engages with the claws 29a, 30a of the FF rod 29, REW rod 30, etc. when the FF button 31, REW button 32, etc. are pressed, respectively.
It is possible to lock the pressed state of the button 31, REW 32, etc. 37 is the stop button, stop button 34
is press-fitted. The stop rod 37 and the lock rod 33 are biased by a single bias spring 35. Note that when the stop rod 37 is pushed, the sloped portion 37a of the stop rod 37 moves against the protrusion 33c of the lock rod 33.
The locking rod 33 is configured to move to the left against the biasing spring 35 by coming into contact with it. Note that the protrusions 21a and 21b of the head board are adapted to come into contact with the fast-forward idler plate 24.

Figure 7 is a plan view with the FF button 31 pushed in;
Figure 8 is a plan view of the rotation system of the forward rotation rapid traverse FF, Figure 9
The figure is a plan view of the rotation system of reverse fast forwarding REW.
FIG. 10 is a plan view with the FF operation button 31 and play button 23 pressed in at the same time.

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

First, in the stop state, the play idler plate 17 is connected to the head board 21 as shown in the rotating system of FIG.
The gear 1 is neutralized by the protrusions 21a and 21b.
0 and 11, so even if the motor 2 rotates, only the first and second flywheels 4 and 5, play pulley 13, and fast feed pulley 15 rotate, and the reel stands 7 and 9 are not connected. Rotational force is not transmitted.

Next, in the forward play state, as shown in Figure 3,
From FIG. 2 in the stopped state, when the play button 23 is pressed, the play pulley 13 rotates to the right (in the direction of the solid line arrow) so that the protrusion 21b of the head board 21 and the play idler plate 17 maintain a contact state. do. This rotating force is generated by the pulling force of the belt 36 applied to the play pulley 13. FIG. 4 shows only the rotation system during normal play, in which the play gear 14 meshes with the relay gear 11, and the power of the motor is transferred to the play gear 1.
4. The relay gear 11 is transmitted to the right reel stand gear 8 and the right reel stand 7. As described above, since the friction mechanism is provided between the play pulley 13 and the play gear 14, the winding torque for normal rotation can be set constant.

Next, the reverse play state is a state in which the forward/reverse switching rod 20 is biased to the right as shown in FIG. do. In FIG. 3, this is indicated by a dashed arrow. FIG. 5 shows only the rotation system at this time, and the play gear 14 is
It meshes with the left reel stand gear 10, and the power of the motor is transmitted to the left reel stand 9 via the play gear 14 and the left reel stand gear 10. Play pulley 1 with the above
Since a friction mechanism is provided between the play gear 3 and the play gear 14, the winding torque during this reverse play can also be set by the same friction mechanism.

Next, to explain the normal rotation fast-forwarding state, first, in the stop state shown in FIG.
The interlocking fast-forward auxiliary arm 26 is urged to rotate counterclockwise due to the tension of The meshing between gear 16 and relay gear 11 is prevented. When the FF button 31 is pushed in from this state as shown in Fig. 7, the fast-forward auxiliary arm 26 follows the protrusion 29b of the FF rod 29 and rotates counterclockwise, and the interlocking idler plate 24 rotates clockwise. The fast forward gear 16 and the relay gear 11 mesh with each other.

FIG. 8 shows only the rotation system in this state, and the rotational force of the fast-forward gear 16 is
1, right reel stand gear 8, right reel stand gear 7
transmitted to. Note that, as described above, a friction mechanism for setting the fast-forward torque may be installed between the fast-forward pulley 15 and the fast-forward gear 16, or alternatively, they may be fixed integrally. If they are fixed together, if the winding angle of the fast feed pulley 15 and the belt 36 is set appropriately, slips will occur there.
Rapid traverse torque can be obtained.

Next, the normal rotation unwinding (reverse fast forwarding) state is the 6th
From the state shown in the figure, the REW button 32 is in a depressed state and is operated as shown by the broken line arrow in FIG. When the REW rod 30 is pushed in, its protrusion 30b engages with the drive spring 28, and the belt 36
The fast-feed auxiliary arm 26 rotates clockwise by a force that overcomes the urging force of , and the fast-feed idler plate 24 rotates counterclockwise. As a result, the fast-forwarding gear 16 moves to the left (in the direction of the dashed arrow) and engages with the left reel gear 10 as shown in FIG. 9, and the rotational force of the motor is transmitted to the left reel stand 9.

Note that when the FF button 31 and the REW button 32 are pushed in at the same time, the drive spring 28 is stronger, so this normal rotation unwinding operation takes priority.

On the other hand, as shown in Figure 10, press the FF button 31 or
When the REW button 32 and the play button 23 are pressed at the same time, the head board 21 moves forward and its protrusions 21a and 21b abut from the left and right, thereby keeping the fast-forward idler plate 24 in the neutral position. The fast-forwarding gear 16 is in a state where it does not mesh with either the left reel stand 10 or the relay gear 11. On the other hand, the play idler plate is as shown in Figure 3.
Relay gear 1 regardless of FF button 31 and REW button 32
1 or the left reel stand 10, and enters the play state. That is, FF or
This is a mechanism where if you operate REW and PLAY at the same time, PLAY always takes priority.

As described above, according to this embodiment, instead of providing a special member such as a blocking member, by pressing the play button, the fast-forward idler plate, which is unrelated to the play operation, is kept in a neutral state, and the fast-forward gear is set to either the left or right. The reel stand is also not driven, so when the FF button (or REW button) and play button are pressed at the same time, the play state is prioritized. That is, it is possible to protect the mechanism during simultaneous operations with a simple configuration without adding any additional members.

Effects of the Invention The present invention is configured to control the rotation of the play idler plate that pivots the play gear and the fast-forward idler plate that pivots the fast-forward gear at the end of the head board that moves during recording and playback operations. However, when playback and fast-forwarding are operated at the same time, the head board blocks the rotation of the fast-forward idler plate and interrupts the transmission of rotation from the fast-forwarding gear to the reel stand, thereby providing a special member such as a blocking member. It is possible to give priority to the playback state without having to play.
That is, it is possible to prevent abnormalities from occurring during simultaneous operations with a simple configuration, and to realize a highly safe, small and lightweight tape recorder.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a rotating system according to an embodiment of the present invention, FIG. 2 is a plan view of the play drive system in a stopped state, and FIG. 3 is a plan view of the play drive system in a play state. Fig. 4 is a plan view of the rotation system in the forward play state, Fig. 5 is a plan view of the rotation system in the reverse play state, Fig. 6 is a plan view of the fast-forward drive system in the stop state, and Fig. 7 is a plan view of the fast-forward drive system in the fast-forward state. A plan view of the rapid traverse drive system, FIG. 8 is a plan view of the rotation system in the normal rotation rapid traverse state,
FIG. 9 is a plan view of the rotation system in the normal rotation and unwinding state, and FIG. 10 is a plan view of the drive system in a state where the fast forward button and play button are pressed at the same time. 1... Mechanical chassis, 2... Motor, 4... First flywheel, 5... Second flywheel, 7... Right reel stand, 8... Right reel stand gear, 9... Left reel stand,
10...Left reel stand gear, 11...Relay gear, 13...
Play pulley, 14... Play gear, 15... Rapid feed pulley, 16... Rapid feed gear, 17... Play idler plate, 20... Direct/reverse switching rod, 21... Head board, 22... Head, 23... Play button, 24... Rapid feed idler plate , 26...Fast forward auxiliary arm, 29...
FF rod, 30...REW rod, 31...FF button,
32...REW button, 34...stop button, 36...belt.

Claims (1)

[Claims] 1 A play gear for transmitting the rotation in the playback state to the reel stand, and the rotation center axis of this play gear are installed, and a play idler plate having the rotation center on the board and the rotation in the fast forward state are transmitted to the reel stand. A fast-forwarding gear, a fast-forwarding idler plate with the rotation center axis of the fast-forwarding gear set up on the board, a magnetic head, and a head board to which the magnetic head is fixed and moved by recording and playback operations. The play idler plate and the fast-forward idler plate are configured to be able to come into contact with each other at the end of the head board, and when the head board is at the stop position, the play idler plate is biased by the head board to close the play gear. When the head board is in the play position, the fast-forward idler plate is biased by the head board to interrupt the rotation transmission from the fast-forward gear to the reel stand, and fast-forward and playback are performed. A tape recorder characterized in that it is configured to preferentially enter a playback state when operated at the same time.