JPS5923021B2 - Operation display device for magnetic recording and reproducing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to an operation display device for a magnetic recording and reproducing device capable of reciprocating recording and reproducing, and an object of the present invention is to accurately display the running state of a tape with a simple configuration. There is a particular thing.

More specifically, in a reciprocating magnetic recording and reproducing device, the tape can run at a constant speed in either the forward or reverse direction, so a forward fast-forward operation is a reverse rotation when considered with respect to the reverse direction. It is equivalent to rewinding, and conversely, a reverse fast-forward operation is equivalent to forward rewinding.

Furthermore, considering high-speed playback, the cue operation (fast-forward playback operation) during forward rotation is equivalent to the review operation (rewind playback operation) during reverse rotation, and conversely, the cue operation that can be performed during reverse rotation is This is equivalent to the review ← action in . Therefore, if an attempt is made to display the tape running direction in each of these states, there is a strong possibility that the actual tape running direction and the displayed tape running direction will not match. In view of these points, the present invention is designed to make it possible to match the actual tape running direction with the displayed tape running direction using an extremely simple configuration.

An embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the entirety of this embodiment, in which an upper substrate 2 is fixed to the upper surface of the lower substrate 1 at a predetermined interval so as to be parallel to the lower substrate 1. As shown in FIG.

Between the lower board 1 and the upper board 2 are a temporary stop rod 3, a right fast forward rod 4, a forward play rod 5, a recording rod 6, a reverse play rod 7, a left feed rod 8, and a stop rod 9 in the direction of arrow AB. Each of these rods is always moved in the direction of arrow B by means of torsion springs 10 to 16 disposed below each of the rods on the lower substrate 1.
is biased in the direction. At the tip of each rod, there is a pause button 17, a right fast forward button 18, a forward play button 19, a record button 20, a reverse play button 21, a left fast forward button 22, and a stop button 2.
3 is fixed. Further, a tape drive motor 24 and a tape counter 25 are fixed to the lower substrate 1, and reel stands 26 and 27 are rotatably supported, and the reel stand 26 and the driving pulley 28 of the counter 25 are connected by a belt 29. , the numerical scale of the tape counter 25 changes as the reel stand 26 rotates. As shown in FIG. 2, a head substrate 30 is supported on the upper substrate 2 via steel balls 31 and is pressed onto the upper substrate 2 by a retainer plate spring 32 whose one end is fixed on the upper substrate 2. 1, and is arranged so as to be slidable in the direction of arrow AB in FIG. A recording/reproducing head 33 and erasing heads 34 and 35 are mounted on the head board 30. Also, the upper board 2
At the top is a switch 36 that turns on and off the power to the motor 24.
is fixed, and its movable contact piece 36a and fixed contact piece 36b
penetrates the opening 2a of the upper substrate 2 and projects downward. Furthermore, a switch 37 is fixed on the upper substrate 2 for changing over the amplifier circuit of the recording head 33, the bias oscillation circuit of the erasing heads 34 and 35, and the tape running direction indicator lamp circuit. The head 33 has two types of gaps on the top and bottom of its front surface, one for forward rotation and one for reverse rotation. The gap for use is selected by a switch 37. Accordingly, regarding the erasing heads 34 and 35, head 34 is operated during forward recording, and head 35 is operated during reverse recording. The above is a description of the configuration shown in FIG. 1. Next, FIGS. 2 and 3 show the main parts of the tape drive mechanism, which will be explained.

A flywheel board 38 is fixed to the lower surface of the lower board 1 at a predetermined interval so as to be parallel to the board 1 described below. Fixed rotation bearing 41
, 42 rotatably support capstans 43, 44. The capstans 43 and 44 are integrally equipped with capstamps 45 and 46 and a flywheel 47.
, 48 are fixed. A pulley 50 is supported on the lower substrate 1 so as to be rotatable about a shaft 49, and a motor pulley 51 attached to the motor 24, the flywheels 47 and 48, and a belt 52 are connected to the pulley 50.
The carbstans 43 and 44 are connected to each other by the counterclockwise rotational force of the motor 24, and are configured to be rotated counterclockwise and clockwise, respectively, as shown in FIG. Incidentally, pinch roller arms 55 and 56 are attached to the upper substrate 2 and are rotatable around support shafts 53 and 54 shown in FIG.
Pinch rollers 57 and 58 are mounted rotatably around shafts 59 and 60, and the pinch rollers 57 and 58 are arranged so as to be able to come into contact with the capstans 43 and 44, respectively. Further, idler levers 61 and 62 are arranged on the upper substrate 2 so as to be able to slide freely across the upper substrate 2 (see FIG. 2). , 66, and the idlers 63, 64 are arranged so as to be able to come into contact with the cab stamps 45, 46 and the reel stands 26, 27, respectively. The above is a description of the configuration of the main parts of the tape drive mechanism. Next, the configuration of the constant speed tape drive mechanism is shown in FIGS. 4 and 5, which will be explained.

A main regeneration rod 67 is disposed between the normal rotation regeneration rod 5 and the reverse regeneration rod 7, and this main regeneration rod 67 is also provided between the lower substrate 1 and the earth substrate 2 so as to be slidable in the direction of arrow AB. Like the other rods, it is always biased in the direction of arrow B by a torsion spring 68 disposed on the lower substrate 1. A connecting pin 69 is fixed to the main reproducing rod 67, and this connecting pin 69 passes through the opening 2b1 of the upper substrate 2 and the opening 30a of the head substrate 30 and projects onto the head substrate 30.
The head board 30 is loosely fitted onto the shaft 70 and has a locking piece 71 at one end.
A torsion spring 72 is disposed, and the other end of the spring 72 engages with the outer circumferential groove 69a of the connecting pin 69 to press the connecting pin 69 in the direction of arrow B. On the other hand, the bent pieces 5a of the normal rotation regeneration rod and the reversal regeneration rod 7,
7a is the locking claw part 67a, 67b of the main regeneration rod 67.
When in a stopped state, they can come into contact with each other at the same time as shown in FIG. Therefore, when the normal rotation playback rod 5 is pressed in the direction of arrow A, the main playback rod 67 is also slid in the same direction via the bending piece 5a and the locking claw 67a, and the reverse playback rod 7 is moved in the direction of arrow A. When pressed in the same direction, the main regeneration rod 67 is also slid in the same direction via the bending piece 7a and the locking claw portion 67b. In other words, as shown in FIG. 5, during normal rotation regeneration from a stopped state, the normal rotation regeneration rod 5 and main regeneration rod 67, and during reverse regeneration, the reverse rotation regeneration rod 7 and main regeneration rod 67 simultaneously slide in the direction of arrow A. I'm starting to do that. Main regeneration rod 6 during forward or reverse regeneration operation
7 slides in the direction of arrow A, the head board 30 also slides in the same direction via the connecting pin 69 and torsion spring 72, and is brought to a predetermined playback position where the head board 30 comes into contact with the stopper pin 2c on the upper board 2. can be maintained. Further, by applying a force in the direction of arrow B to the head substrate 30 held at the reproduction position, the head substrate 30 can be moved in the same direction against the force of the torsion spring 72. Pinch roller arms 55 and 56 are provided with regulating pins 73 and 74 on their lower surfaces, and these regulating pins 73 and 74 penetrate through openings 75 and 76 in head substrate 30 and protrude toward upper substrate 2. The pinch roller arms 55 and 56 are connected to the shaft 77 of the head board 30.
, 78, and one end of which is locked and fixed to a locking piece on the head board 30, the pinch roller arm 55 rotates around the shaft 53 under the biasing force of the other end of the torsion spring 79, 80. The pinch roller arm 56 is rotated in the opposite direction, and the pinch roller arm 56 is rotated in the opposite direction.
4 and is biased to rotate counterclockwise. Therefore, when the normal rotation playback rod 5 or the reverse playback rod 7 is pressed in the direction of arrow A and the head board 30 is slid in the same direction, the positions of the openings 75 and 76 are also shifted, and the pinch roller 57 is moved to the capstan 43. Alternatively, when the pinch roller 58 can be pressed against the capstan 44 and the normal rotation regeneration rod 5 or the reversal redirection rod 7 and the main regeneration rod 67 are returned to the stop position as shown in FIG. As the pinch rollers 76 return to their original positions, the pinch rollers 57 and 58 are separated from the capstans 43 and 44, respectively. The above is an explanation of the configuration of the main parts of the tape constant speed drive mechanism. Since this tape constant speed drive mechanism is closely related to the tape constant speed running direction switching mechanism, the so-called forward rotation/reverse rotation switching mechanism,
The configuration of this switching mechanism will now be described with reference to FIGS.

A switching rod 8 is provided on the upper board 2 between it and the head board 30.
1 is provided slidably in the direction of arrow CD. Similarly, an F-shaped lever 83 is attached to the upper board 2 so as to be rotatable around a support shaft 82, and a connecting pin 84 is fixed to the lower surface of one end of this lever 83. The rod 81 is inserted through the elongated hole 81a without stopping. Therefore, the switching rod 81 and the lever 83 are designed to be interlocked. Further, the other end of a torsion click spring 85 whose one end is loosely fitted into the small hole 2d of the upper substrate 2 is loosely fitted into the small hole 83a at the other end of the lever 83. It is designed to be biased to rotate in two directions, clockwise and counterclockwise. As a result, the switching rod 81 is also biased in two directions, the direction of arrow C and the direction of arrow D. Further, the switching knob 37a of the switch 37 is fitted into the bending engagement concave piece 81b of the switching rod 81, so that the switch 37 can also be switched in two directions, the direction of arrow C and the direction of arrow D. ing.
Further, a T-shaped lever 87 is attached to the substrate 2 between the switching rod 81 and the lever 87 so as to be rotatable about a support shaft 86. A connecting rod 88 is fixed, and this connecting pin 88 is pushed through the elongated hole 81c of the switching rod 81. Therefore, the lever 87 is biased to rotate in two directions, counterclockwise and clockwise, by the biasing force of the click spring 85 via the switching rod 81 and the lever 83. Furthermore, the tips of the two symmetrically formed arms of the lever 87 are fixed upwardly to the normal rotation playback rod 5 and the reverse playback rod 7, respectively, and penetrate through the upper substrate 2 to reach the upper surface of the upper substrate 2. It is engageable with protruding operation pins 88 and 89. Here, in the stopped state shown in FIG. 4, the forward rotation regeneration rod 5 and the reverse rotation regeneration rod 7 are held at the stop position, but in this state, the lever 87 is reversed under the biasing force of the click spring 85. The lever 87, the switching rod 81, the lever 83, and the switch 37 are in contact with the operating pin 89 of the regeneration rod 7, so that the lever 87, the switching rod 81, the lever 83, and the switch 37 are kept in one stable state, and this is now the first state. This will be referred to as the state in which forward rotation is possible.

On the other hand, when a biasing force in the opposite direction beyond the intended point of the click spring 85 is applied, the lever 87 comes into contact with the operation pin 88 of the normal rotation regeneration rod 5, and therefore the lever 87,
The switching rod 81, the lever 83, and the switch 37 are now held in another stable state, which will be referred to as a second state (a state in which reverse travel is possible).

Further, control arms 92 and 93 are attached to the upper board 2 so as to be rotatable about support shafts 90 and 91, and these control arms are disposed between the switching rod 81 and the head board 30. There is. The regulating arms 92, 93 are provided with openings 92a, 93a, through which the heads 61a, 62a (see also FIG. 2) of the idler levers 61, 62 pass through and project upward. The heads 61a and 62a of the idler levers 61 and 62 are connected to the shaft 9 of the base plate 2.
a torsion spring 96 which is loosely fitted into 4 and 95 and has one end locked;
The idler 63 receives the urging force from the other ends 96a and 97a of the cap stamp 45 and the reel stand 26.
Further, the idler 64 is urged in a direction in which it comes into pressure contact with the cap stan booley 46 and the reel stand 27. Idler position adjusting members 98, 99 are fixed to the elongated holes 92b, 93b of the regulating arms 92, 93 with screws 100, 101, and these adjusting members 98, 9-9 are By sliding in the longitudinal direction of the elongated holes 92b and 93b, the idler can be fixed at any suitable position relative to the reel stand and the capstan pulley. A part of the adjustment member is located in the openings 92a, 93a of the Hagishima 1j arms 92, 93, and is located in the idler lever 6.
The head portions 61a and 62a of Nos. 1 and 62 come into contact with each other. Therefore, the regulating arm 92 receives the biasing force of the torsion spring 96 via the idler lever 61 and the adjusting member 98 and applies it to the shaft 9.
0 in the clockwise direction, and the regulating arm 9
3 is biased to rotate counterclockwise around the receiving shaft 91 via the biasing force of the torsion spring 97, the idler lever 62, and the adjustment member 99. Regulating pins 102, 103 are fixed to the lower surfaces of one ends of the regulating arms 92, 93, and these pins 102, 103 can engage with the engaging protrusions 81d, 81e of the switching rod 81, respectively. In other words, the switching rod 81 moves in the direction of arrow C due to the biasing force of the click spring 85.
In the first state in which normal rotation is possible where the engagement protrusion 81e is biased and held in the direction shown in FIG.
03, but since the biasing force of the click spring 85 is much greater than the biasing force of the spring 97, the regulating arm 93 is also held in the first state in which it can rotate in the normal direction, that is, the supply reel stand 27 cannot be rotated. It turns out. Further, at this time, the engaging protrusion 81d is separated from the regulating pin 102,
The restriction arm 92 is designed to be able to rotate clockwise around the shaft 90. Further, when the switching rod 81 is in the second state where it is biased in the direction of arrow D and can run in reverse, the engaging protrusion 81e is separated from the regulating pin 103, and the regulating arm 93 is rotated counterclockwise around the shaft 91. Conversely, the engaging protrusion 81d engages with the regulating pin 102, so that the regulating arm 92 can move in reverse, that is, the take-up reel stand 26
is held in a second state in which it cannot be rotated.
The regulating arms 92 and 93 further have a regulating pin 1 on the upper surface.
04 and 105 are fixed, but these can be engaged with outer peripheral tapered edges 106 and 107 provided on the head substrate 30, respectively.

In other words, when the switching rod 81 is in the first state where it can run forward, the regulating arm 92 can rotate clockwise around the shaft 90, but when the head board 30 is at the stop position, the regulating arm 92 can rotate clockwise around the shaft 90. The tapered edge 106 and the regulating pin 104 engage, and the clockwise rotation of the regulating arm 92 is regulated, and the position of the idler 63 is also regulated via the adjustment plate 98 and the idler lever 61. In this state, the idler 63 is The capstan pulley 45 and the reel stand 26 are configured not to come into pressure contact with each other. Then, as a result of the playback operation, the head board 30 is moved to arrow A.
When the idler 63 comes into pressure contact with the cap stamp 45 and the reel stand 26, the regulation arm 92 stops rotating, but the head board 30 continues to move forward. When the idler 63 is held at a predetermined playback position, its outer peripheral edge 106 is separated from the regulating pin 104, so that the idler 63 is pressed against the capstan pulley 45 and the reel stand 26 by the urging force of Kawasada. Become. Further, when the switching rod 81 is in the second state where it can run in reverse, the regulation arm 93 can now rotate counterclockwise around the shaft 91, and the idler 64 moves between the cap stamp 46 and the reel due to the regeneration operation. stand 2
7, but the operation at this time is symmetrical and exactly the same as that explained in the first state, so
A detailed explanation will be omitted here.

Outer periphery tapered edge 92c formed on regulation arms 92, 93
, 93c engage with regulating pins 73, 74 fixed to the pinch roller arms 55, 56, and restrict clockwise or counterclockwise rotation of the pinch roller arms 55, 56 around the shafts 53, 54, respectively. It is for the purpose of

That is, assuming that the switching rod 81 is now in the first state in which it can run forward, a regeneration operation is performed from the stopped state, and the head board 30 slides in the direction of arrow A. 5, the pinch roller arms 55, 56 move clockwise or counterclockwise around the shafts 53, 54 due to the urging force of the torsion springs 79, 80, as shown in FIG. is biased to rotate. Since the regulation arm 93 is held in the first state by the biasing force of the click spring 850, the regulation pin 74 fixed to the pinch roller arm 56 engages with the outer circumferential tapered edge 93c of the regulation arm 93, and thereby the regulation arm 93 receives a counterclockwise rotational force around the shaft 91, but since the biasing force of the click spring 85 is greater, the rotation of the pinch roller arm 56 is restricted in this state, and the pinch roller 58 is rotated from the capstan 44. held at a distance. On the other hand, since the regulating arm 92 is allowed to rotate clockwise around the shaft 90, its outer circumferential tapered edge 92c also moves, and the regulating pin 73 fixed to the pinch roller arm 55 engages with the outer circumferential tapered edge 92c. Before the pinch roller 57 is brought into contact with the capstan 43, the pinch roller 57 is brought into pressure contact with the capstan 43.
It comes to be pressed against 3. Further, when the switching rod 81 is in the second state where it can run in reverse, the regulation arm 9
2 is held in the second state in which the idler 63 is separated from the reel stand 26 and the cap stamp 45, so that the regulation pin 73 fixed to the pinch roller arm 55 is connected to the outer circumferential tapered edge 92c of the regulation arm 92. Thus, the pinch roller arm 55 is restricted from rotating around the shaft 53, and the pinch roller 57 is held in a position away from the capstan 43, and conversely, the restriction arm 93 is restricted from rotating around the shaft 91 in a counterclockwise direction. Since rotation is allowed, the outer circumferential tapered edge 93
c and the regulating pin 74 fixed to the pinch roller arm 56
The pinch roller 58 is brought into pressure contact with the capstan 44 without being engaged, and therefore the pinch roller 58 is brought into pressure contact with the capstan 44 with a predetermined biasing force. Returning to FIG. 4, a conversion lever 108 is mounted on the upper board 2 with the connecting pin 69 fixed to the main regeneration rod 67 as a pivot, and is disposed between the upper board 2 and the head board 30. Both arms of the conversion lever 108 can come into contact with operation pins 88 and 89 fixed to the normal rotation regeneration rod 5 and the reverse rotation regeneration rod 7 during the regeneration operation. In other words, if the normal rotation regeneration rod 5 is operated from the stopped state shown in FIG. 4, the main regeneration rod 67 will first slide in the direction of arrow A, which will also cause the lever 108 to move in the same direction. If the lever 87 is in the second state where it can run in reverse, the lever 87 will rotate counterclockwise around the shaft 86 against the force of the click spring 85 due to the movement of the operating pin 88 in the direction of arrow A. Therefore, the switching rod 81 moves in the direction of arrow C, the lever 83 rotates clockwise around the shaft 82, and when the click spring 85 passes the point, the biasing force of the click spring 85 causes it to rotate forward. The vehicle is now switched to the first state in which it can run. Therefore, the left tip of the lever 108 comes into contact with the operating pin 89 during movement in the direction of arrow A, and is then rotated counterclockwise by the connecting pin 69 using the contact portion with the operating pin 89 as a fulcrum. , its right tip is the arrow A of the operation pin 88
It will follow the movement in the direction. As shown in FIG. 5, when the main regeneration rod 67 is locked at a predetermined regeneration position and the pressing operation of the normal rotation regeneration rod 5 is stopped, the normal rotation regeneration rod 5 is moved by the biasing force of the return spring 12 as shown in the arrow. It tries to return to the direction B, but the right end of the lever 108 is so close that the operation pin 88 comes into contact with it. The lever 108 is moved to the connecting pin 6 by the return force of the normal rotation regeneration rod 5.
9 receives a rotational force in the clockwise direction, but the left tip receives a rotational force in the counterclockwise direction due to the return force of the spring 14 of the reversing regeneration rod 7 and the biasing force of the click spring 85 of the lever 87. Since this is a much larger force, the lever 108 is held in this state, and therefore the normal rotation regeneration rod 5 is also held in this state. The state described above is shown in FIG. On the other hand, when the reversing regeneration rod 7 is operated from a stopped state, the operation is exactly the same as that during forward regeneration, and the lever 87, switching rod 81, and lever 83 are held in the second state, so that the main When the playback rod 67 is locked at a predetermined playback position, the reversal playback rod 7 is held with the operating pin 89 in contact with the left end of the lever 108. Next, a case will be described in which the reversing reproducing rod 7 is operated from the normal rotation reproducing lock holding state.

When the reversing reproducing rod 7 is pressed from the normal rotation reproducing state shown in FIG. The switching rod 81 and the switching knob 37a of the switch 37 move in the direction of arrow D, and the lever 83 rotates counterclockwise about the shaft 82. Then, when the click spring 85 exceeds the consideration point, the biasing force of the click spring 85 switches to the second state. At this time, the main regeneration rod 67
The head board 30 is still held at the playback position, but as the lever 87 rotates clockwise across the shaft 86, the lever 108 also rotates clockwise around the connecting pin 69. Therefore, as the reversing reproducing rod 7 slides in the direction of arrow A, the normal reproducing rod 5 returns in the direction of arrow B, and this time, in reverse, the reproducing rod 5 returns to the stop position. At this time, the operating pin 89 of the reversing reproducing rod 7 is engaged with the lever 108 and is held in this state.
The above is the switching operation from the forward playback state to the reverse playback state, but conversely, the switching action from the reverse playback state to the forward playback state is exactly the same as explained above, so detailed explanation will be omitted here. .

The above is an explanation of the mechanism shown in FIGS. 4 and 5, and in summary, the following operations can be performed.

(1) When the forward rotation regeneration rod 5 is operated, the switching rod 81 is held in the first state in which forward rotation is possible, and at this time, the pinch roller 57 comes into pressure contact with the capstan 43, and the idler 63
is brought into pressure contact with the capstan pulley 22 and the reel stand 26, and the rotation of the motor 24 causes the tape to be in a normal rotation playback state. At this time, the switch 37 operates the normal rotation side amplifier circuit of the recording/playback head 33 and the bias oscillation circuit of the erase head 34.
Switches to turn on the tape running direction indicator lamp circuit on the forward rotation side. (2) When the main regeneration rod 67 is held locked in the state of (1), the normal rotation regeneration rod 5 is also held at the operating position.

(3) When the reversing regeneration rod 7 is operated, the switching rod 81 is held in the second state where it can run in reverse, and at this time the pinch roller 58 comes into pressure contact with the capstan 44, and the idler 64
is brought into pressure contact with the capstan pulley 23 and the reel stand 27, and the rotation of the motor 24 causes the tape to be in an inverted playback state.

At this time, the switch 37 is turned on to turn on the inverting amplifier circuit of the recording/reproducing head 33, the bias oscillation circuit of the erasing head 35, and the tape running direction indicator lamp circuit on the opposite side. (4) In the state of (2), main regeneration rod 6
When the reversing rod 7 is held locked, the reversing and reproducing rod 7 is also held at the operating position.

(5) To switch from the normal playback state to the reverse playback state or from the reverse playback state to the normal playback state, rotate the switching rod 81 in the forward direction while holding the main playback rod 67 and head board 30 in the playback position. The switch 37 and the pinch rollers 57 and 58 switch from the first state in which the vehicle can travel to the second state in which it can travel in reverse or from the second state to the first state.
pressure contact to the capstans 43, 44, idlers 63, 6
4 cap stamps 22, 23 and reel stand 26
, 27 respectively.

(6) By arranging the adjusting members 98, 99 on the regulating arms 92, 93, the idlers 63, 64 are pressed against the cap stamps 22, 23 and the reel stands 26, 27, and the pinch rollers 57, 58 are pressed against the cap stamps 43, 44. It is possible to accurately synchronize the pressure contact with the tape and accurately obtain a constant speed tape drive state.

Next, the operation button mechanism is shown in FIGS. 6 to 8, and in FIG. 6 for explaining this, there are operation interlocking rods 109, 10
A pick plate 110 and a 20th hook plate 111 are provided at predetermined intervals so as to be slidable in the direction of arrow CD, and these are always moved in the direction of arrow C by tension springs 112 to 114 whose one end is fixed to the lower substrate 1. It is biased and held in place.

The operation interlocking rod 109 has an opening 115 forming an inclined side 115a and an inclined side 11 in order from the right end side in the direction of arrow C.
6a, square holes 117 to 119, an opening 120 forming the inclined side 120a, and a square hole 121, and the openings 115, 116, and 120 have the same shape. Next, on the tenth pick plate 110, a triangular protrusion 122a having an inclined side and a groove 1 are arranged in order from the right end side in the direction of arrow C.
an opening 122 forming a groove 124b, an opening 124 forming a triangular protrusion 124a having an inclined side and a groove 124b;
Triangular protrusion 125a and groove 125b with inclined sides
An opening 125 forming a triangular protrusion 126a having an inclined side and a groove 126b, an opening 127 forming an inclined side 127a are provided. , 126a have the same height. Further, in the 20th pick plate 111, in order from the right end side in the direction of arrow C, there is a square hole 128, an opening 1 having a triangular protrusion 129a having an inclined side, and a groove 129b.
29, square hole 131. Opening hole 132 with inclined side 132a
is provided.

The aperture 129 is located directly below the aperture 124, and the eighth
As shown in the figure, the heights of the protrusions 124a and 129a are the same, but the positions of the grooves 124b, 129b and the slight amount α
They are placed offset. Further, as shown in FIG. 7, the 20th rack plate 111 is slidably guided by three sliding parts 111b to 111d on the guide parts 1a to 1c provided on the lower substrate 1, and the sliding parts 11b and 11c is the guide part 1a, 1
A predetermined gap β is created between the sliding portion 11d and the guide portion 1c when the guide portion 1c is in contact with the sliding portion 11d. In the above state, the above-mentioned positional deviation α between the grooves 124b and 129b occurs. Further, β is set larger than α. On the other hand, right fast forward rod 4, main playback rod 67,
Operating pins 138 to 142 are fixed downward to the recording rod 6, left fast forward rod 8, and stop rod 9, respectively.

The operation pin 138 is inserted into the holes 115, 122, 128, the operation pin 139 is inserted into the holes 116, 124, 129, and the operation pin 140 is inserted into the holes 117, 125.
are inserted through the openings 120, 126, and 131, and the operation pin 142 is inserted through the openings 121, 127, and 132, respectively. Further, a blocking rod 143 is slidably disposed on the lower surface of the operation interlocking rod 109. That is, the projections 143a, 143b of the blocking rod 143 are inserted into the square holes 118, 119 of the operation interlocking rod 109, respectively, and the projections 143a, 143b are guided by the square holes 118, 119. A tension spring 144 is applied between the operation interlocking rod 109 and the blocking rod 143, and when the operation interlocking rod 109 moves in the direction of arrow D, the blocking rod 143 uses the biasing force of this tension spring to move the operation interlocking rod 109 in the direction of arrow D. It will receive sliding force in the direction. Also this blocking rod 1
43 is formed with an L-shaped opening 145, and an operating pin 140 fixed to the recording rod 6 passes through this opening. A bent piece 109a is formed at one end of the operation interlocking rod 109, and this bent piece 109 moves the movable contact piece 36a of the switch 36 that turns on and off the power of the motor 24 explained in FIG. This is for contacting the fixed contact piece 36b. In other words, the above operation interlocking rod 1
09 is at a predetermined stop position, the bent piece 109a
is away from the movable contact piece 36a, so the switch 36
The movable contact piece 36a and the fixed contact piece 36b are separated and turned off, but when the operation interlocking rod 109 is moved in the direction of arrow D, the bent piece 109a presses the movable contact piece 36a in the same direction. The movable contact piece 36a and the fixed contact piece 36b are brought into contact, and the switch 36 is turned on. The configuration of the operation button mechanism has been described above, and its operation will be explained next. First, during a forward regeneration operation or a reverse regeneration operation, as the main regeneration rod 67 moves in the direction of arrow A, the operating pin 139 also moves in the same direction.

At this time, the operation pin 139 presses the inclined side 116a of the opening 116 of the operation interlocking rod 109, so the operation interlocking rod 109 is moved in the direction of arrow D against the biasing force of the spring 112, and thus folds. The bending piece 109a presses the movable contact piece 36a of the switch 36 in the same direction, and the movable contact piece 36
a comes into contact with the fixed contact piece 36b, and the switch 36 is turned on. At the same time, the operating pin 139
Since the inclined side of No. 24 is pressed, the tenth pick plate 110
is moved in the direction of arrow D against the biasing force of the spring 113, and when the operating pin 139 gets over the protrusion 124a, the operating pin 139 is inserted and locked in the groove 124b, and the main regeneration rod 67 is held at this position. The device is locked and enters playback mode. On the other hand, since the operation pin 139a presses the inclined side of the opening 129 of the 20th pick plate 111, the 20th pick plate 111
1 is moved in the direction of arrow D against the biasing force of the spring 5114, and when the operating pin 139 gets over the protrusion 129a, the operating pin 139 is inserted into the groove 129b. However, as shown in FIG.
Since the position of the operating pin 139 is shifted by a slight amount α from the groove portion 124b, the operation pin 139 is not locked in this groove portion 129b, but faces with a gap α therebetween. In this regeneration state, when the stop rod 9 is pressed, the movement of the stop rod 9 in the direction of arrow A causes the operation pin 142 to move in the same direction.
The inclined side 127a of the opening 127 and the 20th pick plate 111
Since the inclined side 132a of the opening 132 is pressed, the first
The zero lock plate 110 and the twentieth lock plate are moved in the direction of arrow D, and when the main regeneration rod 67 is operated, the tenth pin
Groove portion 124b of pick plate 110 and 20th pick plate 111
When the operating pin 1 comes off the groove 129b,
39 is released, and the main regeneration rod 67 is released from the spring 6.
The force of 8 returns it to its original state and brings it to a stopped state.

Next, the recording operation will be explained.

The recording operation is performed by pressing the recording rod 6 and the main playback rod 67 simultaneously. When the recording rod 6 and main playback rod 67 move in the direction of arrow A, the operation interlocking rod 109 is moved in the direction of arrow D, as in the case of playback operation, and at this time, the blocking rod 143 is also pulled by the spring 144 and moves in the same direction. However, the operating pin 140 is stuck in the groove 14 of the L-shaped hole 145 of the blocking rod 143 in the direction of the arrow CD.
5a and has reached the groove 145b in the direction of the arrow AB, the operation lever 140 is not locked in the groove 145a and can continue to press the recording rod 6. At this time, the blocking rod 143 is in the groove 145b.
is held in a locked state by the operation pin 140. On the other hand, the operation pins 140 and 139 are connected to the tenth hook plate 110, respectively.
Since the inclined sides of the openings 125 and 124 are pressed, the tenth pick plate 110 moves in the direction of arrow D, as in the playback operation.
The operation pins 140 and 139 are connected to the groove portions 125b and 139, respectively.
124b, and both the recording and main playback rods are locked in this position and enter the recording state. Note that if the stop operation is performed in the recording state, the 10th pick plate 110 and the 20th pick plate 111 move in the direction of arrow D, and the locks on the recording rod 6 and main playback rod 67 are released, as in the case of playback. It is returned to its original position by the forces 13 and 68 and comes to a stopped state. Next, the right or left fast forward operation will be explained.

When the right fast forwarding rod 4 or the left fast forwarding rod 8 is moved in the direction of arrow A, the operating pin 138 or the operating pin 141 also moves in the same direction, and the respective operating interlocking rods 1
Inclined sides 115a, 120a of openings 115, 120 of 09
Press the above operation interlocking rod 10 in the same way as during playback.
9 is moved in the direction of arrow D, switch 36 is turned on, and the motor is powered on. And at the same time the 10th
Since the inclined sides of the openings 122 and 126 of the pick plate 110 are pressed, the tenth pick plate 110 moves in the direction of the arrow D as during playback, and when the operating pin 138 or 141 gets over the protrusion 122a or 126a, the groove 122b Or 12
6b, the right fast feed rod 4 or the left fast feed rod 8 is locked in this position and enters the right fast feed or left fast feed state. If the stop rod 9 is pressed in these right or left fast forward states, the tenth lock plate 110 will move in the direction of arrow D and the right fast forward rod 4 or the left fast forward rod 8 will be unlocked, as in the case of playback. , are returned to their original positions by the force of springs 11 and 15, respectively, and come to a stopped state.

Next, the case where the recording rod 6 is pressed from the playback or right/left fast forward state will be explained. During playback or left/right fast forwarding, the operation interlocking rod 109 moves in the direction of arrow D, and the blocking rod 143 also moves in the same direction by the force of the spring 144. At this time, the operating pin 140 of the recording rod 6
is inserted into the groove 145a of the L-shaped hole 145 of the blocking rod 143 in the direction of arrow CD. Therefore, even if an attempt is made to record in this state, the operation pin 140 will be locked in the groove 145a, and the recording rod will not be able to move. 6 becomes impossible to move in the direction of arrow A. Next, a high-speed playback operation, so-called key operation, will be explained.

When the right fast-forward rod 4 or the left fast-forward rod 8 is operated from the playback state, the movement of the operating pin 138 or 141 in the direction of arrow A causes the tenth pick plate 110 to move in the direction of arrow D, as already explained during the fast-forward operation. Then, as shown in FIG. 8, when the operating pin 138 or 141 gets over the protrusion 122a or 126a, the operating pin 139 of the main regeneration rod 67 moves into the groove 12 of the opening 124.
4b, and therefore the main regeneration rod 6
The lock by the 10th lock plate 110 of 7 is released and the main regeneration rod 67 attempts to return to the stop position, but since the 20th lock plate 111 has not been moved in the direction of arrow D, the 20th lock plate 111 is now locked. The operating pin 139 is locked in the groove 129b of the opening 129, and the regenerated state is maintained. In other words, the main playback rod 67 is locked at a position that is slightly returned by a small amount α from the normal lock position, but even in this state, the tape constant speed drive is designed to operate normally. On the other hand, since the operation pin 139 is locked at the position returned by α, even if the tenth locking plate 110 tries to return in the direction of arrow C, the force is very weak, so the protrusion 124 of the opening 124
The tip of a is reversely locked to this operating pin 139. Therefore, the operating lever 138 or the operating pin 141 of the right fast-forwarding rod 4 or the left fast-forwarding rod 8 is inserted into the grooves 122b, 12 of the openings 122, 126 of the tenth pick plate 110, respectively.
6b, and the right fast-forwarding rod 4 or left fast-forwarding rod 8 is not locked, and it is necessary to always press the right fast-forwarding rod 4 or left fast-forwarding rod 8 by hand to maintain the locked state. be. Of course, when this pressing force is released, the right fast-forwarding rod 4 or the left fast-forwarding rod 8 returns to the stop position, so that the reproducing state is resumed. When performing the above key operation from the recording state, as already explained, the tenth pick plate 110 moves in the direction of arrow D, so the operating pin 140 of the recording rod 6 comes out of the groove 125b of the opening 125, and the recording rod is removed. The lock of 6 is released, and therefore the above-mentioned normal cue or playback state can be entered, and the arrangement is such that erroneous recording will not occur due to cue operation from the recording state.

By the way, when maintaining the locked state for a long time, it is inconvenient to have to manually press each fast-forward rod for a long time as described above, and in this embodiment, in such a case, the main regeneration rod 67 and The structure is such that the right rapid feed rod 4 or the left rapid feed rod 8 can be locked at the same time, so this will be explained.

When performing a key operation from the playback or recording state, as explained above, press the operation pin 138 of each fast-forward rod.
, or 141 is the opening 122 of the tenth pick plate 110,
126, the tenth pick plate 110 touches the operation pin 1 of the main regeneration rod 67.
39, the operating pins 138, 141 could not be locked.
, 131 and one side 1 of this square hole 128, 131
28a, 131a, but when the right or left rapid feed rods 4, 8 are pushed deeper from that position, the operating pins 138, 141 move to the 20th lock plate 11, respectively.
One side 128a, 131a of the openings 128, 131 of No. 1 is pressed.

Here, as shown in FIG. 7, the 20th pick plate 111, which had been pressed in the direction of arrow B by the restoring force of the main regeneration rod 67, is now pressed even deeper by the right fast-forwarding rod 4 against its sliding portion. 111.b begins to rotate slightly counterclockwise about the point at which it contacts the guide portion 1a of the lower substrate 1 as a fulcrum. At this time, the groove 1 of the opening 129
29b is also shifted, and therefore the operating pin 1 of the main regeneration rod 67
39 is moved in the direction of arrow A, and when this movement amount becomes larger than α, the operating pin 139 moves toward the tenth pick plate 110.
As the tenth pick plate 110 is released from the protruding piece 124a of the opening 124, the tenth pick plate 110 is released from the operation pin 139, and is moved in the direction of the arrow C by the force of the spring 113.
The groove portion 124b is engaged with the operation pin 139, and the groove portion 122b is engaged with the operation pin 138, and the main regeneration rod 67 and the right fast forwarding rod 4 are locked with the tenth lock plate 110.
The queue state is maintained. On the other hand, when the left rapid feed rod 8 is pressed deeply, the sliding portion 111c of the 20th hook plate 111 is
Since it rotates clockwise around the point of contact between the guide portion 1b of the lower substrate 1 and the guide portion 1b of the lower substrate 1, the operation pin 139 of the main regeneration rod 67 is moved by the displacement of the groove portion 129b of the opening 129, as in the case of the right fast forward operation described above. is forced to move in the direction of arrow A,
Therefore, the tenth lock plate moves in the direction of arrow C by the force of the spring 113, locks the main reproducing rod 67 and the left fast-forwarding rod 4, and maintains the locked state. Note that the locked state can be maintained by pressing the main playback rod 67 and the right or left fast-forward rods 4 and 8 at the same time, in addition to pressing the right fast-forward rod 4 or left fast-forward rod 8 deeply from the playback or recording state. This can also be achieved by the same operations as those described above.

Next, when a stop operation is performed from the state where the key is locked, the 10th pick plate 110 and the 20th pick plate 111 simultaneously move in the direction of arrow D, and the main playback rod 66 and right fast forward are moved as in the case of playback. The lock of the rod 4 or the left fast-forwarding rod 8 is released, and each returns to its original position and comes to a halt.

The above is an explanation of the operation button mechanism, and in summary, the following operations can be performed. (1) Maintaining the playback or recording state by locking only the main playback rod 67 or the main playback rod 67 and the recording rod 6 at the same time.

(2) Locking only the right fast forwarding rod 4 or only the left fast forwarding rod 8 to maintain the right fast forwarding state or the left fast forwarding state.

(3) Preventing the recording rod 6 from being pressed in the playback state, right fast forward state, or left fast forward state.

(4) In the playback state, the right fast forward rod 4 or the left fast forward rod 8 is pressed and held by hand to perform a cue operation.

(5) In the recording state, press the right fast forward rod 4 or the left fast forward rod 8 to release the recording rod 6.
A key operation that automatically returns the lock from the recording state to the playback state.

(6) Simultaneously locking the main playback rod 67 and the right fast-forwarding rod 4 or the left fast-forwarding rod 8 by pressing the right fast-forwarding rod 4 or the left fast-forwarding rod 8 after the locking operation, that is, maintaining the locked state. (7) Simultaneous locking, that is, holding the queued state, by pressing the main playback rod 67 and the right fast forwarding rod 4 or the left fast forwarding rod 8 at the same time.

(g) Transition to the stop state by pressing the stop rod 9 in the playback, recording, right fast forward, left fast forward, or cue hold state. Next, FIG. 9 shows a fast forwarding mechanism, which will be explained.

Operating levers 148 and 149 that are rotatable around support shafts 146 and 147 are attached to the lower board 1, and torsion springs 1 are attached to the bearings of these operating levers 148 and 149.
50, 151 are loosely fitted, and these springs 150,
Both techniques 151 are locked to the operating levers 148 and 149, and only the long techniques 150a and 151a protrude to the outside of the operating levers. On the other hand, the right rapid traverse rod 4 and the left rapid traverse rod 8 are equipped with the torsion springs 150 and 151.
Bent pieces 152 and 153 are provided opposite to the bent pieces 152 and 151a, and when the right fast feed rod 4 or the left fast feed rod 8 is moved in the direction of arrow A, the bent pieces 152 and 153 are bent.
153 is the trick of torsion spring 150, 151 150a, 1
These torsion springs 150, 15 are pressed against 51a.
The operating levers 148 and 149 are rotated counterclockwise and clockwise around shafts 146 and 147, respectively, by the elastic force of 1. The operation lever 148,
Connecting pins 154 and 155 are fixed to one end of 149, and these connecting pins 154 and 155 are connected to a switching rod 156 that is slidably supported on the lower substrate 1 in the direction of arrow CD.
It is fitted into the bent engagement concave pieces 157, 158 of. Therefore, the operating levers 148, 149 and the switching rod 156 are adapted to move together. In other words, when the right fast-forward rod 4 is moved in the direction of arrow A, the operating lever 148 is rotated counterclockwise around the shaft 146, the switching rod 156 is moved in the direction of arrow C, and the left fast-forward rod 8 is moved in the direction of arrow A. When moved in this direction, the operating lever 149 rotates clockwise around the shaft 147, and the switching rod 156 moves in the direction of arrow D. Further, a switching plate 160 is supported on the lower substrate 1 so as to be rotatable about a support shaft 159. A torsion spring 162 is loosely fitted to the shaft 161 on this switching plate 160, and the right side 162a and left side 162b of this spring 162
are respectively locked by locking pieces 160a and 160b on the switching plate 160 and protrude to the outside of the switching plate 160, and are connected to the right inner wall 1 of the engagement recess 163 formed in the switching rod 156.
63a and the left inner wall 163b, and when the switching rod 156 moves in the direction of arrow C, the engagement recess 16
3 presses the right side 162a of the spring 162, so the switching plate 160 is moved by the elastic force of the spring 162 to the shaft 159.
is rotated counterclockwise around the switching rod 1.
56 moves in the direction of arrow D, the left inner wall 163b of the engagement recess 163 presses the left side 162b of the spring 162, so the switching plate 160 rotates clockwise around the shaft 159 by the elastic force of the spring 162. You will be able to do it. Further, a shaft 164 is fixed to the other end of the switching plate 160, and a gear 165 and a gear 66 are integrally attached to the shaft 164 so as to be rotatable. Also, capstan pulley 45,
46 has a capstan gear 167 as shown in FIG.
168 is integrally fixed to the capstans 43 and 44 to the rotating shaft. Pulleys 169 and 170 are integrally fixed to the take-up reel shafts 26a and 27a of the reel stands 26 and 27, respectively. Therefore, when the switching plate 160 rotates counterclockwise around the shaft 159, the gear 165 and the capstan gear 1
67 mesh, and the pulley 166 comes into pressure contact with the pulley 169. Further, when the switching plate 160 rotates clockwise around the shaft 159, the gear 165 and the capstan gear 168
mesh with each other, and the pulley 166 comes into pressure contact with the pulley 170. Also, a torsion spring 17 is attached to the shaft 171 on the lower substrate 1.
2 is loosely fitted, and the right side 172a of this spring 172,
The left handle 172b is locked to the locking pieces 1d and 1e of the lower board 1, and its tip is connected to the switching rod 156.
The right inner wall 173a and the left inner wall 1 of the engagement recess 173 formed in
73b, and therefore the right side of the spring 172 172
a, move the switching rod 156 in the direction of arrow D, and move the switching rod 156 to the left
b is adapted to urge the switching rod 156 in the direction of arrow C, and as described above, the locking pieces 1d, 1 of the lower board 1
In the state in which the right lever 172a and the left lever 172b are locked in the position e, the switching rod 156 is urged with the same force in opposite directions, so that the switching rod 156 is held in this position. At this time, the aforementioned switching plate 160 is connected to the spring 16.
2, the gear 165 is held in a neutral position away from the capstan gears 167, 168, and the pulley 1J166 is held in a position away from the pulleys 169, 170.
Spring 150, 1 supported by operating lever 148, 149
51's tricks 150a and 151a are respectively right fast forward rod 4
The bent piece 152 of the left fast forwarding rod 8 is held at a position apart from the bent piece 153 of the left fast forwarding rod 8. Further, a switch 174 is fixed to the lower surface of the lower board 1, and a switching knob 174a of this switch 174 penetrates the lower board 1 and protrudes upward, and is fitted into an engagement recess 175 formed in the switching rod 156. Therefore, when the right fast-forwarding rod 4 is moved in the direction of arrow A around the neutral position where the switching rod 156 is held by the spring 172, the spring 150 and the operating lever 148 are inserted into the switch 174. , in the direction of arrow C via the switching rod 156, and when the left rapid feed rod 8 is moved in the direction of arrow A, the spring 151, the operating lever 149, and the switching rod 156
The switch can be switched in the direction of arrow D via .

This switch 174 is used to operate a tape running direction indicator lamp circuit and a so-called muting circuit that lowers the playback output by a predetermined level during cue operation, and the circuit diagrams thereof are shown in FIGS. 10 and 11. Since it is necessary to explain the key operation before explaining this, the configuration of the key operation will be explained again with reference to FIG. 9. Control levers 178 and 179 are provided on the lower board 1 so that support shafts 176 and 177 can be rotated freely, and torsion springs 180 and 181 are attached to the bearing portions of the control levers 178 and 179.
is loosely fitted, and both of the springs 180 and 181 are locked to the control levers 178 and 179, and the long lever 18
Only the control levers 0a and 181a protrude to the outside of the control levers 178 and 179.

On the other hand, the right rapid traverse rod 4 and the left rapid traverse rod 8 are provided with bent pieces 182, 183 opposite to the lengths 180a, 181a of the torsion springs 180, 181. When moved in the A direction, the upper bent pieces 182, 183 will release the torsion springs 180,
181's long technique 180a, 181a is pressed against it, so
The elastic force of the torsion springs 180, 181 causes the control levers 178, 179 to rotate counterclockwise and clockwise about shafts 176, 177, respectively. Returning to FIGS. 4 and 5, control pins 184 and 185 are fixed to the lower surface near the center of the head board 30, and these control pins 184 and 185 are connected to the switching rod 81,
The arm portions 178a, 1 of the control levers 178, 179 extend through the upper substrate 2 and protrude below the upper substrate 2.
It faces 79a.

The control pins 184 and 185 are connected to the head board 30.
When is in the stop position, the arm 178 of the front tray j control lever
a, 179a, but the head board 30
When it is held at a predetermined reproduction position as shown in FIG. 5, it is very close to the arms 178a and 179a,
Therefore, the right fast forwarding rod 4 and the left fast forwarding rod 8 are moved in the direction of arrow A, and the control levers 178, 179 are moved to the shafts 176, 179.
When the arm portions 178a and 179a rotate counterclockwise and clockwise around the control pin 177, respectively, the arm portions 178a and 179a come into contact with the control pins 184 and 185 and press them in the direction of arrow B. Since the elastic force of springs 180 and 181 is greater than that of spring 72, head board 30 is moved in the direction of arrow B against the force of spring 72. control lever 178
, 179 are designed so that when the head board is moved by a predetermined amount in the direction of arrow B, the tips of the arm parts 178a, 179a come into contact with a stopper 186 provided on the lower board 1. Afterwards, the continued movement of the right fast-forwarding rod 4 and the left fast-forwarding rod 8 in the direction of arrow A is escaped by the elastic force of springs 180 and 181. That is, the head board 30 is moved in the direction of arrow B by the movement of the right fast-forward rod 4 and the left fast-forward rod 8 in the direction of arrow A, but after moving by a predetermined amount, the amount of movement of the right fast-forward rod 4 and left fast-forward rod 8 is It is configured to be held in a fixed position regardless of the location. Returning to FIGS. 1 and 5, the case where the head substrate 30 moves in the direction B by a predetermined amount will now be described.

As the head board 30 moves in the direction of arrow B, the recording/reproducing head 33 also moves in the same direction, but the amount of movement is constant, and in this state the head 33 is still in contact with the force setting tape. Therefore, when the tape is fed at high speed in this state, a so-called "Kyu" sound is reproduced through the head 33. In addition, in the case of normal rotation playback by moving the head board 30 in the direction of arrow B, the outer peripheral edge 1 of the head board 30
06 comes into contact with and presses the regulation pin 104, so the regulation arm 9
2 rotates counterclockwise around an axis 90. As a result, the idler 63 is moved approximately in the direction of arrow D via the regulation arm 92, the adjustment member 98, and the idler lever 61, and is separated from the capstan pulley 45 and the reel stand 26.
Furthermore, the pinch roller 57 is connected to the outer peripheral edge 92c of the regulating arm 92.
It is moved approximately in the direction of arrow B via the first regulating pin 73 and the pinch roller arm 55, and is separated from the capstan 43. Therefore, the constant speed drive of the tape is canceled. Also, during reversal playback, as the head board 30 moves in the direction of arrow B, the idler 64 moves away from the cap stamp 46 and the reel stand 27 via the regulating arm 93, and the pinch roller 58 also moves away from the cap stamp 44, canceling constant speed drive of the tape. will be done.

Next, the tape running direction indicating lamp circuit and muting circuit shown in FIGS. 10 and 11 will be explained. FIG. 10 shows a tape running direction indicator lamp circuit, in which a voltage of +B is always applied to one end of a forward direction indicator lamp 187 and a reverse direction indicator lamp 188, which are mounted on the tape recorder body so as to be visible from the outside. The other end is connected to switch 37 and switch 174.

As explained in FIGS. 1, 4, and 5, the switch 37 is configured to switch between two states depending on the direction in which the tape is driven at a constant speed, and the switching rod 81 is in the first state, i.e. When the forward rotation regeneration is possible, the contact 1 side of the switch 37 is connected, and when the switching rod 81 is in the second state, that is, the reverse regeneration possible state, the switch 37 side is connected.

On the other hand, as explained above, the switch 174 has three states: when the right and left rapid traverse rods 4 and 8 are at the stop position, when the right rapid traverse rod 4 is pressed, and when the left rapid traverse rod 8 is pressed. Contacts 1, . . . are switched accordingly. In other words, when the right and left rapid traverse rods 4 and 8 are at the stop position, the contact 1 side of the switch 174 is connected, and when the right rapid traverse rod 4 is pressed, the contact side of the switch 174 is connected, and the left rapid traverse rod 8 is connected.
When the switch 174 is pressed, the contact side of the switch 174 is connected. Therefore, when the right and left fast-forwarding rods 4 and 8 are at the stop position, the switch 174 and the switch 37 are connected, so if normal rotation playback is performed, the match 3
The I side of switch 7 is connected and the forward direction indicator lamp 188 is energized, and when reverse playback is performed, the switch 37 side is connected and the reverse direction indicator lamp 188 is energized. Furthermore, when the right fast forward rod 4 is operated, the tape is fed at high speed in the same direction as the normal playback direction, but since the contact side of the switch 174 is connected, the switch 37 does not know which side of the contact 1 is connected. Even if the normal rotation direction indicator lamp 187 is energized. Similarly, when the left fast forward rod 8 is operated, the tape is fed at high speed in the same direction as the reverse playback direction, but since the contact side of the switch 174 is connected, it does not matter which side of the switch 37 is connected. , the reverse direction indicator lamp 188 is energized. In addition, in the case of cue operation, it is clear that the same operation as in the left fast forward state described above can be performed, so the explanation will be omitted.

Figure 11 shows a muting circuit. This circuit lowers the playback output by a certain level when the signal on the tape 189 is played back at high speed by the key operation, so that the key sound does not become unpleasant to the ears. belongs to.

One end of the output terminal 0 of the reproduction amplifier 190 is the external output terminal 19
1, and external output +V is taken out from this external output terminal 191. The other end is connected to the collector side of the transistor 193 through a resistor Rll92. The emitter side of this transistor 193 is grounded, and the base side is connected to one end of the above-mentioned switch 174. At the other end of the switch 174, I is open, and a voltage of -B.1 is always applied to . Therefore, when the right and left fast-forwarding rods 4 and 8 are at the stop position, that is, when the contact 1 side of the switch 174 is connected, no base current flows through the transistor 193, so this transistor 193 becomes 0FF, and the external output is The output of the reproduction amplifier 190 can be taken out as is. On the other hand, when the right fast-forward rod 4 or the left fast-forward rod 8 is operated and the contact side or the contact side of the switch 174 is connected, a base current flows to the transistor 193, and this transistor is turned on, so that a portion of the output of the reproduction amplifier 190 is Therefore, the external output +V is reduced by a certain level. The configuration of the fast-forwarding mechanism has been described above, and its operation will now be described.

First, when performing a right fast forward operation from a stopped state, when the right fast forwarding lever 4 is moved in the direction of arrow A, the operating lever 148 is rotated counterclockwise around the shaft 146 via the torsion spring 150, and therefore the switching is performed. The rod 156 is the connecting pin 154
is moved in the direction of arrow C.

At this time, the switching plate 160 is connected to the shaft 1 via the torsion spring 162.
59 in the counterclockwise direction, the gear 165 meshes with the capstan gear 167, and the pulley 166 engages with the pulley 16.
9 is pressed against. Therefore, due to the counterclockwise rotation of the capstan gear 167Q, the gear 165 and the pulley 169 are rotated clockwise and the pulley 169 is rotated in the counterclockwise direction.
The reno 426a of No. 6 winds up the force set tape at high speed in the same direction as normal playback. Furthermore, the switching knob 174a of the switch 174 is also switched in the same direction by the movement of the switching rod 156 in the direction of arrow C, the switch 174 is connected to the side, the forward direction indicator lamp 187 is energized, and the transistor 193 is turned ON. During fast forward operation, there is no output from the reproduction amplifier 190, so there is no change in the external output. On the other hand, the torsion leg lever 178 is rotated counterclockwise around the shaft 176 via the torsion spring 180, but the torsion leg pin 184 fixed to the head board 30 is not moving in the direction of arrow A. Pressure Fb by control lever 178
l? The head substrate 30 remains held at the stopped position. Next, when performing a left fast feed operation from a stopped state, when the left fast feed rod 8 is moved in the direction of arrow A, the operating lever 149 is rotated clockwise around the shaft 147 via the torsion spring 151, and thus The switching rod 156 is moved in the direction of arrow D via the connecting pin 155.

At this time, the switching plate 160 is connected to the shaft 1 via the torsion spring 162.
59, the gear 165 meshes with the capstan gear 168, and the gear 166 engages with the pulley 170.
is pressed against. Therefore, the clockwise rotation of the capstan gear 168 causes the gear 165 and the pulley 170 to rotate counterclockwise, and the pulley 170 to rotate clockwise.
The reel shaft 27a winds the force set tape at high speed in the same direction as the reverse playback. Further, the switching knob 174a of the switch 174 is also switched in the same direction by the movement of the switching rod 156 in the direction of the arrow D, the switch 174 is connected to the side, the reverse direction indicator lamp 188 is energized, and the transistor 193 is turned ON. In this case as well, there is no output from the reproducing amplifier 190, so there is no change in the external output. On the other hand, the control lever 178 is connected to the shaft 177 via a torsion spring 181.
The control pin 185 fixed to the head board 30 is rotated clockwise around the control lever 179.
The head substrate is not pressed and controlled, and the head substrate remains held at the stop position. Next, the key operation will be explained.

First, when you press the right fast forward rod 4 during forward playback,
Similar to the right fast forward operation described above, the reel stand 26 rotates counterclockwise and attempts to wind the force set tape at high speed in the normal playback direction. On the other hand, prior to this, the head board 30 moves in the direction of arrow A during playback and is brought to the playback position, so the control pin 184 is rotated counterclockwise around the shaft 176 of the control lever 178. Head board 30 via
is moved in the direction of arrow B from the playback position. However, when the control lever 178 is rotated by a predetermined amount, the stopper 1 of the lower board 1
86 and cannot rotate any further, so the head board 3
0 is also held at a position moved by a predetermined amount. At this time, the regulation arm 92 is rotated counterclockwise around the shaft 90 via the regulation pin 104, and thereby the idler 63 is moved approximately in the direction of arrow D via the regulation arm 92, adjustment member 98, and idler lever 61. The capstan 45 is moved away from the reel stand 26. Also, pinch roller 57
is moved approximately in the direction of arrow B via the restriction arm 92, the restriction pin 73, and the pinch roller arm 55, and leaves the capstan 43. Therefore, forward rotation constant speed drive of the tape is eliminated. On the other hand, since the head 33 remains in contact with the tape 189, the signal from the tape 189 is transmitted to the head 33.
Playback continues via . A certain timing difference is provided between the start of the above-described high-speed tape winding operation and the cancellation of the constant-speed drive, so that the high-speed tape winding operation is started after the constant-speed drive is canceled. Also, since the switch 174 is switched to the state, the forward rotation direction indicator lamp 18
7 continues to be energized, the transistor 193 is turned on, and the external output of the reproducing amplifier 190 is lowered by a certain level. In other words, the single sound output from the outside is muted and becomes a small sound, so that no harsh sound is generated. Here, there is a certain timing difference in the switching of the switch 174 described above, and first the muting circuit operates, then the normal rotation constant speed drive of the tape is canceled, and then the normal rotation high speed winding operation and the normal rotation direction start. The display lamp 187 continues to be energized at the same time. The above is a case in which the right fast-forwarding rod 4 is operated from the normal rotation playback state to perform a cue operation. Next, a case in which the left fast-forwarding rod 8 is operated from the reverse playback state will be described.

In this case, the reel stand 27 rotates clockwise in the same way as in the left fast forward operation, and the tape is wound at high speed in the reverse playback direction. On the other hand, prior to this, the head substrate 30 is held at a position moved by a predetermined amount in the direction of arrow B from the playback position by the control lever 179 as in the above explanation. At this time, the regulation arm 93 is rotated clockwise around the shaft 91 via the regulation pin 105, and the idler 64 is thereby moved approximately in the direction of arrow C via the regulation arm 93, adjustment member 99, and idler lever 92. The cap stamp 46 leaves the reel stand 27. Also, pinch roller 5
8 is moved approximately in the direction of arrow B via the restriction arm 93, the restriction pin 74, and the pinch roller arm 56, and is separated from the capstan 44. Therefore, the reversal constant speed drive of the table is canceled. Further, since the head 33 remains in contact with the tape 189, the signal from the tape 189 continues to be reproduced via the head 33. Further, since the switch 174 is switched to the contact position, the reversal direction indicator lamp 188 continues to be energized, and the transistor 193 is turned on, so that the external output of the reproducing amplifier 190 is muted. In this case as well, there is a certain timing difference in the switching operation.
First, the muting circuit is operated, and then the reversal constant-speed drive of the tape is canceled, and then the reversal high-speed winding operation and the continued energization of the reversal direction indicator lamp 188 are performed simultaneously. The above is the case where the left fast-forwarding rod 8 is operated from the reverse playback state to perform the key operation.
Next, we will explain the case of operating the left fast-forward rod 8 from the forward playback state, and the case of operating the right fast-forward rod 4 from the reverse playback state, but in this case, the above-mentioned key operations will be rearranged, so detailed explanation will be given. Omitted.

When the left fast forward rod 8 is operated from the forward playback state, the muting circuit is first activated, then the forward rotation constant speed drive of the tape is canceled, and then the forward rotation direction indicator lamp 187 is activated at the same time as the reversal high speed winding operation starts. is de-energized and the reversal direction indicator lamp 188 is energized. Furthermore, when the right fast forward rod 4 is operated from the reverse playback state, the muting circuit is first activated, then the reverse constant speed drive of the tape is canceled, and then the reverse direction indicator lamp 188 is activated at the same time as the forward high speed winding operation starts. The power is cut off, and the forward rotation direction indicator lamp 1
87 is energized. In these cases, the muted high-speed reproduction sound becomes a so-called revue sound, which is a reproduction sound in the direction opposite to the reproduction direction of the constant-speed reproduction sound. The above is an explanation of the fast forwarding mechanism, but to summarize it, the following operations can be performed.

(1) High-speed fast forwarding of the tape in the forward rotation direction by operating the right fast forwarding rod 4 and lighting of the same direction indicator lamp.

(2) High-speed fast forwarding of the tape in the reverse direction by operating the left fast forward rod 8 and lighting of the same direction indicator lamp. (3) From the forward rotation playback state, the right fast forward rod 4 is operated to perform a muting operation and the forward rotation direction indicator lamp is turned on. (
4) From the forward playback state, operate the left fast forward rod 8 to perform a muted review operation and turn on the reverse direction indicator lamp.

(5) From the reverse playback state, perform a review operation with muting by operating the right fast-forward rod 4 and turn on the forward direction indicator lamp. (6) From the reverse playback state, turn the left fast-forward rod 8
The operation of the button causes the cue movement with muting and the lighting of the reversal direction indicator lamp.

As explained above, the operation display device of the magnetic recording and reproducing apparatus of the present invention is moved in response to the operation of the forward rotation fast-forward button and the reverse fast-forward button, and is moved in response to the operation of the forward rotation fast-forward button and the reverse rotation fast-forward button.
3 switching rods according to the above two fast forward button operations.
This first switch and a second switch that takes two positions depending on whether the poop constant speed running direction is forward or reverse, are used to display a forward running direction display element and a reverse running direction display element. By activating the elements, the forward rotation direction display element and the reverse rotation direction display element operate during forward rotation constant speed travel and reverse rotation constant speed travel, respectively, and the forward rotation travel direction display element operates during forward rotation fast forward and reverse rotation fast forward, respectively. The display element and reverse running direction display element are activated, and during forward rotation fast forward playback operation,
During a reverse fast-forward playback operation, the forward running direction display element and the reverse running direction display element are operated regardless of whether the playback direction is reversed or forward. For example, the actual tape running direction can be displayed correctly at all times, and usability can be improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the entire mechanism of a magnetic recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a front view of the main parts, FIG. 3 is a schematic plan view of the tape constant speed drive mechanism, and FIG. 4 5 is a plan view showing the stopped state, FIG. 5 is a plan view showing the normal rotation reproducing state, and FIG.
The figure is an exploded perspective view showing the operation button mechanism, Fig. 7 is a plan view of the 10th pick plate, Fig. 8 is an enlarged plan view of the main parts showing the relationship between the 10th pick plate and the 20th pick plate, and Fig. 9 10 is a plan view of the tape high-speed drive mechanism, FIG. 10 is a circuit diagram showing a muting circuit, and FIG. 11 is a circuit diagram showing a tape running direction display circuit. 18...Forward rotation fast-forward button, 22...Reverse fast-forward button, 37...(2nd) switch, 156
......Switching rod, 174... (1st)
Switch, 187, 188... Travel direction indicator lamp.

Claims (1)

[Claims] 1. A common switching rod is provided that responds to the operation of two operation buttons, a forward rotation fast-forward button and a reverse rotation fast-forward button, and the high-speed travel drive mechanism is controlled so that the tape is selectively run at high speed in the forward direction or in the reverse direction, and in response to the switching rod, when neither the forward rotation fast-forward button nor the reverse rotation fast-forward button is operated, the first contact is A first switch is provided, which takes the second contact position when the forward rotation fast-forward button is operated and the third contact position when the reverse fast-forward button is operated, and when the tape can run at a constant speed in the forward rotation direction. A second switch is provided which takes the first contact position and the second contact position when the tape can run at a constant speed in the reverse direction, and is provided with a forward running direction display element and a reverse run direction display element. An operation display device for a magnetic recording/reproducing device configured to give priority to displaying a high-speed running direction of a tape over a constant-speed running direction.