JPS6331052A - Double deck type recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain automatic continuous reproducing and recording of a pair of tape cassettes by using a long array operating means and changing-over successively and automatically a pair of tape cassettes loaded at a pair of decks to a playing condition. CONSTITUTION:When a pair of the tape cassettes loaded at a pair of decks 2 and 3 are both made from the stopping condition to the playing condition and a long playing operating means 50 is made into an action condition, one-side changing-over mechanisms 29, 55 and 72 corresponding to one side tape cassette are held to a pausing condition, other tape cassette only comes to be the playing condition and a desired recording or reproducing is executed. When other tape cassette comes to be a tape end, a shutting-off means 101 is operated, at this time, one side shutting-off means 100 corresponding to one-side changing-over mechanisms 29, 55 and 72 held in the pausing condition is held at a non-action condition by the long playing operating means 50, and therefore, other changing- over mechanism only is changed-over to the stopping condition by other shutting- off means 101 corresponding to it.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double deck type recording and reproducing apparatus having a pair of decks into which a pair of tape cassettes are mounted.

[Summary of the invention]

The present invention provides a double deck type recording/playback device including a pair of switching mechanisms for respectively switching a pair of tape cassettes mounted on a pair of decks from a stop state to a play state, and a pair of switching mechanisms based on the tape ends of the tape cassettes. A pair of shut-off means for switching from the play state to the stop state is provided, and a long-play operation means is provided, and the long-play operation means maintains one of the shut-off means in a non-operating state and places the other switching mechanism in a pause state. and the long play operating means is driven from an operating state to a non-operating state by the other shutoff means, thereby enabling automatic continuous playback or recording of a pair of tape cassettes mounted on a pair of decks. It has been made possible.

[Conventional technology]

Conventionally, a double deck type tape is constructed in which a pair of decks to which a pair of tape cassettes are attached are provided in parallel or back to back, and dubbing is possible between the pair of tape cassettes attached to these pair of decks. A recorder exists.

This conventional double-decker tape recorder has a pair of switching mechanisms that each switch a pair of tape cassettes mounted on a pair of decks from a stop state to a play state, and these pair of switching mechanisms can be operated selectively or simultaneously. By doing so, recording or reproduction of tape cassettes mounted on each deck, dubbing between tape cassettes, etc. can be performed.

To sequentially record or play back a pair of tape cassettes installed on a pair of decks, first press the record or play button to put one switching mechanism corresponding to one tape cassette into the play state, and then After recording or playing back on the tape cassette, one of the switching mechanisms is switched to a stop state by manual operation or a shutoff mechanism.

Then, it was necessary to go through the procedure of pressing the two operating ports corresponding to the other switching mechanism to record or play back the tape cassette loaded on the other deck.

[Problem that the invention seeks to solve]

However, according to the conventional double deck tape recorder described above, in order to sequentially record or play back a pair of tape cassettes mounted on a pair of decks, it is necessary to record data on at least one tape cassette mounted on one deck. Or, it was necessary to press the operation button twice to switch the switching mechanism corresponding to each tape cassette to the play state, once at the start of playback and once at the start of recording or playback of the other tape cassette loaded on the other deck. 2. Description of the Related Art Conventionally, an automated mechanism capable of sequentially and automatically recording or reproducing a pair of tape cassettes mounted on a pair of decks has been an issue.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a double-deck type recording and reproducing apparatus that can automatically sequentially record or reproduce a pair of corresponding tape cassettes mounted on a pair of decks.

[Means for solving problems]

The present invention provides a pair of decks on which a pair of tape cassettes are mounted, a pair of switching mechanisms for respectively switching the pair of tape cassettes mounted on the pair of decks from a stop state to a play state, and A pair of shut-off means are provided which are operated when the pair of tape cassettes mounted on the decks each reach a tape end to switch the pair of switching mechanisms from a play state to a stop state, Of the pair of tape cassettes, one of the shutoff means corresponding to one of the tape cassettes is held in a non-operating state, and one of the switching mechanisms corresponding to one of the tape cassettes is paused. A long play operation means is provided for holding the tape cassette in the tape cassette, and the long play operation means is driven from the operating state to the non-operating state by the other shutoff means corresponding to the other tape cassette.

[Effect]

According to the present invention, when the pair of switching mechanisms are switched to change the pair of tape cassettes mounted on the pair of decks from the stop state to the play state, and the long play operation means is activated, one of the tape cassettes is switched to the play state. One of the corresponding switching mechanisms is held in a pause state, and only the other tape cassette is in a play state to perform desired recording or reproduction. Then, when the other tape cassette reaches the tape end, the shutoff means is operated, but at this time, the one shutoff means corresponding to the one switching mechanism held in the pause state is disabled by the long play operation means. Since it is kept in the operating state, one of the switching mechanisms is not shut off, and only the other switching mechanism is switched to the stop state by the corresponding other shut-off means. When the other shutoff means is operated, the long play operation means is driven from the operating state to the non-operating state by the other shutoff means, so that the pause state of one switching mechanism is released. One of the tape cassettes enters the play state, and desired recording or reproduction is performed. Next, when one of the tape cassettes reaches the tape end, the one tape cassette is switched to the stop state by the corresponding one of the shutoff means.

〔Example〕

An embodiment in which the present invention is applied to a double deck tape recorder having an auto-reverse mechanism will be described below with reference to the drawings.

First, the outline of this double-deck tape recorder will be explained with reference to FIGS. 1 to 5.

As shown in FIGS. 1 and 2, the double deck tape recorder 1 has a pair of decks 2.3 on which tape cassettes 90 are mounted, and these decks 2.3 are installed back to back. It is being For Detsuki 2.3,
Each pair of reel stands 4a to 4d provided with reel stand gears 6a and 6d, each pair of capstans 8a to 8d, each pair of pinch rollers 10.11, a magnetic head 12, etc. are arranged, and a chassis 13, record button 14, play button 15.16, stop! 017, one fast forward button 18, a rewind button 19, a long play operation knob 20, etc. are provided.

Between decks 2 and 3, as shown in Figures 3 to 5,
A flat, thin motor 21 is installed on the same axis as the reel stand 4b on the side of the deck 2, and each pair of capstans 8a, 8c and 8b, 8d protruding from the deck 2.3 are installed on the same axis. A capstan pulley 22, 23 that also serves as a capstan flywheel, an intermediate pulley 24 provided approximately in the middle of the capstan pulley 22, 23, and a reversing pulley 25 provided on the side of the capstan pulley 23 are arranged. has been done. An elastic belt 27 is wound between each of these pulleys 22, 23, 24, 25 and a drive pulley 26 of the motor 21.

The intermediate pulley 24 includes an FR drive gear 28 that is engaged with a fast forwarding and rewinding gear (not shown), and a drive gear 41 that is always engaged with an intermediate gear 42 that is integrally provided with a drive gear 38. , and a pair of NR drive gears 39, 40 respectively protruding from the deck 2.3. The deck 2.3 is provided with NR file gears 35, 36 for normal running and reverse running of the magnetic tape 5, and intermediate gears 33, 34.

When a pair of tape force sets 90 are selectively or simultaneously installed on the deck 2.3 of the double deck type tape recorder 1 configured as described above, the pair of reel hubs 91 of the tape cassette 90 are connected to the reel bases 4a to 4. 4d, and the magnetic tape 5 is passed to the capstans 8a (8C) and 8b (8d) as shown in FIG.

Next, when the record button 14 or play button 15 or 16 is pressed,
A power switch (not shown) is turned on, the motor 21 is rotated at a constant speed, the drive pulley 26 is rotationally driven, and the belt 27 is rotated.
By intermediate pulley 24, capstan pulley 22.2
3. The reversing pulleys 25 are each driven to rotate. As shown in FIG. 4, the NR file gear 35 (36), which is always in mesh with the NR drive gear 39 (40) that is rotationally driven integrally with the intermediate boob IJ24, is in normal mode (described later).
By the reverse switching device 45, one reel stand 4b
(4d) is selectively engaged with the reel base gear 6b (6d). At the same time, a hesode support mechanism (not shown)
The magnetic head 12 is brought into contact with the magnetic tape 5, and the pinch roller 11 is pressed against one of the capstans 8b (8d) to cause the magnetic tape 5 to run normally, and the magnetic head 12 to perform normal recording or reproduction. be exposed.

Next, when the normal running of the magnetic tape 5 reaches the end of the tape, the drive gear 38, which is constantly rotationally driven together with the intermediate gear 42 by the drive gear 41, is activated by the operation of the trigger mechanism 47, which will be described later. The partially toothed gear 37 is selectively engaged and driven half a rotation. Missing tooth gear 3
7 drives the normal/reverse switching device 45 and switches to reverse travel. As a result of this switching, the NR file gear 35 (36) is moved as shown by the dashed line in FIG.
) is pressed against the pinch roller 10. As a result, the other reel stand 4a (4c) is rotationally driven, and the magnetic tape 5
is run in reverse, and reverse recording or reproduction by the magnetic helad 12 is performed.

Next, when the stop button 17 is pressed, the power switch is turned off and the rotation of the motor 21 is stopped, and the NR file gear 35 (36) is returned to the neutral position to enter the stop mode.

By the way, this double deck type tape recorder 1 is configured so that dubbing can be performed between a pair of tape cassettes 90 respectively mounted on the decks 2 and 3.

Furthermore, when the magnetic tape 5 reaches the tape end during reverse running, a shutoff operation is performed by a shutoff mechanism 48, which will be described later, and the magnetic tape 5 is configured to automatically enter a stop mode.

Furthermore, a long play operation means 50 is provided which can automatically perform normal and reverse playback (recording) on deck 3 following normal and reverse playback (recording) on deck 2.

Next, details of the normal/reverse switching device 45 will be explained with reference to FIGS. 5 to 12B.

First, as shown in Figures 6A and 6B, deck 2.3
A pair of operating rods 29. for switching the pair of tape cassettes 90 mounted on the tape cassettes 90 to the stop state and the play state.
30, one end of which is fixed to each playback button 15.16, and the other end connected to a pair of connecting levers 55.5 via a bottle 54.
6. The pair of operating rods 29 and 30 are reciprocated in the directions of arrows a and b in FIGS. 6A and 6B by having their guide holes 31 guided by guide bins 7 provided in the chassis 13. It is biased backward in the direction of arrow a by biasing means (not shown). Further, the connecting levers 55, 56 are connected by the shafts 9 provided in the chassis 13 with the arrows c and d in FIGS. 6A and 6B.
It is pivoted so that it can rotate freely in the direction, and a pin 5 is attached to its free end.
1 is provided. And the connecting levers 55 and 56 are
Due to the return spring 58 stretched between the chassis 13,
It is urged to rotate in the direction of arrow d.

Next, on the back side of the deck 2.3, there is a pair of drive rods 60.
61 are arranged. The drive rods 60 and 61 are configured to be able to reciprocate in the directions of arrows e and f by having their elongated holes 52 guided by the rotation shaft 43 of the drive gear 38 or the guide shaft 44 provided in the chassis 13. There is.

The pin 51 of the connecting lever 55.56 is engaged with a U groove 63 formed at one end of the drive rod 60.61, and a tension spring 6 is inserted between these pins 51 and the drive rod 60.61.
4 is hung. Also, the other end side 6 of the drive rod 60.61
0a and 61a are formed almost symmetrically on the left and right sides, and a pair of left and right regulating portions 66 and 67 made of projecting pieces are provided on both sides of the cutout portions 65 formed on the other end sides 60a and 61a. . A shaft 68 is crimped at the center of each of the other end sides 60a, 61a of the drive rods 60, 61, and a linear spring 69 having a substantially U-shape is attached to the shaft 68. This spring 69 has both ends 69a, 6
The central portion 69c is fitted onto the shaft 68 so that the portion 9b protrudes toward the notch 65, and is configured to be swingable in the directions of arrows g and h.

Note that a pair of pinch rollers 10.11 provided on the deck 2.3 are driven at the ends of the other end sides 60a and 61a of the drive rods 60.61, and the pinch rollers 10.
．． A pair of drive pins 70, 71 for selectively crimping the capstans 11 to the capstans 8a to 8d are provided.

Next, a pair of switching levers 72, 73 are provided at an intermediate position between the pair of reel stands 6a16b and an intermediate position between the pair of reel stands 6C16d of the deck 2.3, respectively. This switching lever 72.73 is configured to be able to swing freely in the directions of arrows i and j on the outer periphery of the NR drive gear 39.40.
NR file gears 35 and 36, which are always in mesh with the drive gears 39 and 40, are each rotatably supported, and at the other end there are pressed parts 75 each consisting of a protruding piece, and pressed parts 75 arranged on both sides thereof. A pair of left and right regulated parts 76 and 77
is formed. Both ends 69a and 59b of the spring 69 are arranged on both sides of the pressed portion 75.

In addition, the above operating rod 29.30, connection lever 55.56
A pair of switching mechanisms are formed by drive rods 60, 61 and switching levers 72, 73 to respectively switch a pair of tape cassettes 90 mounted on a pair of decks 2.3 from a stop state to a play state.

Next, on the back side of the deck 2.3, there is a pair of tape cassettes 90 that are moved between the normal switching position and the reverse switching position to switch the running of the tape cassette 90 attached to the deck 2.3 between normal running and reverse running. Switching rods 80, 81 are provided. This pair of switching rods 80.81 is arranged substantially perpendicular to the pair of drive rods 60.61 described above, and the bearing portions 32 of the capstans 8a to 8d provided on both upper and lower surfaces of the capstan boo IJ22.23. The elongated hole 82 is guided by the switch so that it can reciprocate in the direction of arrow kS1 between the normal switching position shown in FIGS. 6A and 6B and the reverse switching position shown in FIGS. 8A and 8B. has been done.

A spring pressing portion 85 consisting of a protrusion is provided approximately at the center of the switching rod 80.81, and this spring pressing portion 85 is inserted between both ends 69a, 69b of the spring 69. In addition, a partially toothed gear 3 is provided at one end of the switching rod 80.81.
A protrusion 86 extending toward the 7 side is provided, and this protrusion 86
A pair of drive pins 88 and 89 protrude from both upper and lower surfaces of the partially toothed gear 37 through cam holes 83 and 84 formed in the rollers 78.
．． 79 is engaged. A pair of pins 91.92 for selectively switching the pressing of the pinch rollers 10, 11 to the capstans 8a to 8d are fixed to the switching rods 80.81 so as to protrude above the deck 2.3. There is.

A cam portion 94 for rotationally driving a shut-off lever 100, which will be described later, is formed at the end of the protrusion 86 of the switching rod 80 provided on the deck 2 side. Further, a cam member 95 is attached to the end of the protrusion 86 of the switching rod 81 provided on the deck 3 side.
is installed.

The cam member 95 is configured such that its two guide holes 96 are guided by a pair of guide pins 87 that are integrally provided on the switching rod 81, so that it can slide in the directions of arrows m and n in FIG. 6B. has been done.

This cam member 95 has a shutoff lever 10.
1, and an engaging portion 98 that engages with a regulating portion 141 of a long play operation rod 140, which will be described later.
A spring attachment portion 99 is integrally provided, and a tension spring 53 is attached between the spring attachment portion 99 and the switching rod 81.

Next, between the pair of switching rods 81, 82, one partially toothed gear 37, which is a rotating body, is arranged to simultaneously drive the pair of switching rods 81, 82.

The partially toothed gear 37 is rotatably attached to the chassis 13 via a shaft 46, and is configured to be selectively engaged with the drive gear 38 and rotated. As shown in FIGS. 5 and 13, this partially toothed gear 37 is formed with a pair of partially toothed portions 120 and 121 that are offset by 180 degrees from each other. A pair of driving pins 88.89 are provided as driving means for simultaneously driving a pair of switching rods 80.81, and these driving pins 88.89 are provided with cam holes 83.84 of a pair of switching rods 8o and 81. Rollers 78,79 are mounted which roll along the periphery of the.

On one side of the partially toothed gear 37, there is a pair of engagement convex portions 122. which are selectively engaged with the lock claw 111 of the trigger lever 110 and the engagement claw portion 102 of the shut-off lever 100.101.
123 and a pair of protrusions 124 and 125 that selectively abut the bent arm portion 112 of the trigger lever 110 are integrally provided.

Next, as shown in FIGS. 6A and 6B, a trigger lever 110 is attached to the side of the partially toothed gear 37 so as to be rotatable in the direction of arrow O1p by a shaft 113 provided on the chassis 13. This trigger lever 110 is moved by an arrow 0 by a spring 114 stretched between it and the chassis 13.
It is biased forward in the direction. A movable iron core 115 is swingably attached to one end of the trigger lever 110. This movable iron core 115 is attached to the chassis 13, and the trigger lever 110 is rotated in the direction of the arrow p. A solenoid 118 is provided to maintain the condition.

Next, the operation of the normal/reverse switching device 45 configured as described above will be explained.

First, playback buttons 15 and 16 are pressed selectively or simultaneously during dubbing to switch the deck 2.3 from the stop mode shown in Figures 6A and 6B to the play (recording or playback) mode. When the operating lever 29.30 is moved forward in the direction of the arrow in FIGS. 6A and 6B, the connecting lever 55.56 is moved through the pin 54 of the connecting lever 55.56.
Rotate in the direction of arrow C.

By rotating the connecting lever 55, 56 in the direction of arrow C, the drive rod 60, 61 is moved forward in the direction of arrow e by the tension spring 64 (see FIGS. 7A, 9A, and 9B). Accordingly, the restriction of the restricted portion 76.77 of the switching lever 72.73 by the restriction portion 66.67 of the drive rod 60.61 is released, and the switching lever 72.73 can rotate in the directions of arrows i and j. state. At this time, the switching rods 80 and 81 are as shown in Fig. 7A.
In the normal switching position shown in Figure 10B, the switching rod 8
One end 6 of the spring 69 is
Since the switch lever 9b is pressed from the inside to the outside, the switch lever 72.73 becomes rotatable, and at the same time the spring 69 is rotated in the direction of the arrow, and the switch lever 72.73 is rotated at the other end 69a.
Press the pressed portion 75 of 73 from the side to switch the switching lever 72
．． 73 in the direction of arrow i. And switching lever 7
The rotation in the direction of arrow i of 2.73 causes the NR file gears 35 and 36 to mesh with the reel base gears 6b and 6d, and the limiter spring function of the spring 69 causes the NR file gears 35 and 36 to mesh with the reel base gears 6b and 6d. 6d is crimped.

As a result, the rotation of the NR drive gear 39.40 is transmitted to the reel base gears 6b, 6d via the NR midle gear 35.36.
The reel stands 4b and 4d are rotationally driven, and the magnetic tape 5 is normally run.

Next, when the magnetic tape 5 reaches the tape end during normal running and this is detected by a detection means (not shown),
The solenoid 118 is momentarily energized and the movable iron core 115
The attraction is released, and the trigger lever 110 is rotated in the direction of arrow 0 by the spring 114. Along with this, the lock pawl 111 of the trigger lever 110 and the engagement convex portion 1 of the partially toothed gear 37
22 is released, and the trigger lever 110
The bent arm portion 112 contacts the protrusion 124 of the partially toothed gear 37 and presses it in the direction of the arrow r, applying an initial rotational force of the partially toothed gear 37 in the direction of the arrow r, thereby causing the partially toothed gear 37 to become a driving gear. 38 to engage. The drive gear 38 is connected to the intermediate pulley 24
The gear 37 is constantly rotated in the direction of the arrow S through the drive gear 41 and the intermediate gear 42 due to the rotation of the drive gear 38, so the partially toothed gear 37 meshed with the drive gear 38 is rotated in the direction of the arrow R. When the partially toothed gear 37 is rotated approximately 90 degrees, the engagement convex portion 123 contacts and presses the bent arm portion 112 of the trigger lever 110.
is rotated in the direction of arrow p against the spring 114, and the movable iron core 115 is again attracted to the magnet 119 of the solenoid 118.

Thereafter, when the partially toothed gear 37 is continuously rotated in the direction of arrow r, the lock pawl 111 of the trigger lever 110 is engaged with the locking convex portion 123, as shown in FIG. 8A, and the partially toothed gear 37 is rotated.
is locked.

As the partially toothed gear 37 rotates in the direction of the arrow r, the rollers 78.79 of the pair of drive pins 88.89 provided on the upper and lower surfaces of the partially toothed gear 37 move into the cam hole of the switching rod 80.81. 83. It rolls along the periphery of 84, and this cam hole 8
3.84 and rollers 78.79, the switching rod 80.81 is simultaneously moved in the direction of the arrow from the normal switching position shown in Figures 7A and 10B to the reverse switching position shown in Figures 8A and 11B. will be moved.

As the switching rod 80.81 moves in the direction of the arrow, the spring pressing portion 85 of the switching rod 80.81 switches from a state of pressing one end 69b of the spring 69 to a state of pressing the other end 69a. It will be done. As a result, the spring 69 is swung in the direction of the arrow g, and one end 69b of the spring 69 is moved to the switching lever 7.
Press the pressed portion 75 of 2.73 from the other side and rotate the switching lever 72.73 in the direction of arrow j. Switching lever 7
2.73, the NR file gear 35.36 is disengaged from the reel stand gears 6b and 6d, and the NR file gear 35.36 is disengaged as shown in FIGS. 8A and 11B. are meshed with intermediate gears 33 and 34. At this time, the spring 69 exerts its limiter spring function and generates a pressure force, which causes the NR file gear 35.
36 is crimped onto the intermediate gear 33,34. And this time, the rotation of NR drive gear 39.40 is NR file gear 35
．． 36 and intermediate gears 33, 34 to the reel base gear 6.
a, 6c, the reel stands 4a, 4C are rotated, and the magnetic tape 5 is run in reverse.

Next, when the magnetic tape 5 reaches the end of the tape during reverse running, the partially toothed gear 37 is rotated in the direction of arrow r in the same manner as the switching operation from normal running to reverse running described above.
This rotation of the partially toothed gear 37 moves the switching rod 80.81 from the reverse switching position shown in FIGS. 8A and 11B to the 7A position.
The deck 2.3 is moved in the direction of arrow 1 to the normal switching position shown in FIG. It is configured so that

Although not shown, this double-deck tape recorder l is also provided with a switching mechanism for switching between normal and reverse mode by manual operation.

According to the above-mentioned normal/reverse switching device 45, by providing the drive pins 88, 89, which are a pair of drive means, on the toothless gear 37, which is one rotating body, the switching rods 80, 81, which are a pair of switching means, are provided. They are configured to be driven simultaneously. Therefore, there is no need to provide separate toothless gears 37 to drive the pair of switching rods 80, 81, and the motor 21 for driving the toothless gears 37,
Since it is sufficient to provide one drive system such as the gear train 41, 42, 38, and one trigger mechanism 47, it is possible to reduce the number of parts and make the mechanism cylindrical.

In addition, by configuring the pair of switching rods 80 and 81 to be driven simultaneously by one partially toothed gear 37, the deck 2.
When dubbing is performed between a pair of tape cassettes 90 respectively attached to tape cassettes 3 and 3, if the lengths of the magnetic tapes 5 of each tape cassette 90 are different, the tape end of one tape cassette 90 may cause the tape end of the other tape cassette to overlap. 90
Even if it is not the end of the tape, switching between normal running and reverse running, or the shut-off operation described below will be performed simultaneously on deck 2.3, but except for this point, deck 2.3 can be used alone or as described below. During long plays, it is no different from driving the pair of switching rods 80 and 81 with separate drive systems.

Next, details of the shutoff mechanism 48 will be explained.

Deck 2.3 has operating rod 29.30 or fast forward,
A pair of locking plates 130 and 131 are provided for locking a rewinding lever (not shown) or the like in its forward position. The reason why the two lock plates 130 and 131 are configured in this way is that when dubbing or during long play (described later), each operating lever corresponding to the deck 2 side and each operating lever corresponding to the deck 3 side can be This is because it is necessary to lock or unlock them separately.

These pair of lock plates 130 and 131 are connected to the chassis 13.
The guide hole 132 is guided by a shaft 59 provided in the shaft 59, so that the guide hole 132 is slidable in the directions of arrows t and u in FIGS. 6A and 6B. It is biased backward in the direction of arrow U by a spring 133. The lock plate 130.131 has an operating rod 29.30.
A lock pawl 134 that is engaged with the lock protrusion 57 and a pressed portion 135 are integrally provided.

Next, a pair of shut-off levers 100, 101 corresponding to the lock plates 130, 131, respectively, are arranged at substantially intermediate positions between the lock plates 130, 131 and the partially toothed gear 37. This pair of shut-off levers 100, 101
are coaxial with the shaft 109 provided on the chassis 13, respectively, and the arrows V.

It is rotatably supported in the W direction. These shutoff levers 100 and 101 are biased back in the direction of arrow V by a return spring 108.

As shown in FIG. 13, the shut-off lever 100.101 includes a retaining claw portion 102 that selectively engages with the engaging convex portion 122.123 of the partially toothed gear 37, and a lock plate 130.1.
Pressing part 10 that acts on 31 to perform a shutoff operation
3 and sliding contact portions 104 that slide into cam portions 94 and 97 of the cam member 95 of the switching rod 80 or the switching rod 81, respectively. The pressing portion 103 of the shut-off lever 100 is configured to press a pressed portion 135 of the lock plate 130 and a pressed portion 145 of a long play operating rod 140 (described later). is configured to press the pressed portion 135 of the lock plate 131.

Next, the operation of the shutoff mechanism 48 configured as described above will be explained.

First, when the regeneration button 15.16 is pressed selectively or simultaneously from the stop mode shown in FIGS. 6A and 6B, the operating rod 29.30 is moved forward in the direction of the arrow, and its locking protrusion 57 is engaged with the lock pawl 134 of the lock plate 130, 131, and the deck 2.3 is switched to the play mode. Then, when switched to play mode, switch lever 8
0.81 is in the normal switching position shown in FIGS. 7A and 10B, the magnetic tape 5 is normally run.

In this normal driving mode, the shutoff lever 10
0.101, as shown in FIGS. 7A and 10B, is moved back in the direction of arrow V by the return spring 108, and the engaging claw portion 102 moves into the rotation area of the engaging protrusion 122, 123 of the partially toothed gear 37. being forced to escape.

Next, it becomes the tape end of normal running and gear with missing teeth 37
When the switch is rotated in the direction of arrow r, the switching rod 80.81 moves to the eighth position.
It is moved in the direction of the arrow to the reverse switching position shown in Figures A and 11B, and is switched to reverse travel mode. When the switching rod 80.81 moves in the direction of the arrow, the sliding portion 104 of the shutoff lever 100.101 moves against the switching rod 8.
0 cam part 94, cam member 9 attached to the switching rod 81
The shut-off levers 100 and 101 are gradually rotated in the direction of arrow W. This rotation of the shutoff lever 10O1101 occurs after the engagement protrusion 123 of the partially toothed gear 37 passes the side of the engagement claw 102 of the shutoff levers 100, 101.
The engagement claw portion 102 is the engagement convex portion 122.12 of the partially toothed gear 37.
The timing is such that it is inserted within the rotation locus of No. 3. Then, the engagement convex portion 123 of the partially toothed gear 37 is engaged with the lock pawl 111 of the trigger lever 110, whereby the rotation of the partially toothed gear 37 is stopped, and the magnetic tape 5 is run in reverse.

Next, when the reverse running reaches the end of the tape, the partially toothed gear 37 is rotated again in the direction of arrow r. At this time, toothless gear 3
As shown in FIGS. 9A and 12B, the engagement protrusion 122 of No. 7 engages with the engagement claw 102 of the shut-off lever 100.101 inserted into the rotation locus of the locking protrusion 122,
Rotate the shutoff levers 100, 101 in the direction of arrow W.

As the shut-off levers 100, 101 rotate in the direction of arrow W, the pressing portion 103 of the shut-off lever 100, 101 comes into contact with the pressed portion 135 of the lock plate 130, 131 and presses it. Slide the temporary 130 and 131 in the direction of the arrow against the return spring 133. By sliding the lock plates 130 and 131, the lock plates 13
The engagement between the lock claw 134 of 0.131 mm and the locking protrusion 57 of the operating rod 29.30 is released, the operating rod 29.30 is moved back in the direction of arrow a, and the deck 2.3 is shut off. It will be done.

Next, details of the long play operation means 50 will be explained. This long play operation means 50 automatically runs the tape cassette 90 mounted on deck 3 in normal and reverse mode after the tape cassette 90 mounted on deck 2 runs in normal and reverse directions. .

First, as shown in FIGS. 6A and 6B, a long play operation lever 140 is fixed to the long play operation knob 20. This long-play operating rod 140 is slidably provided in the directions of arrows x and y in FIGS. 6A and 6B by having its guide hole 142 guided by a shaft 59 provided on the chassis 13. One side of the long play operating rod 140 is selectively engaged with a bottle 128 installed in the chassis 13 to selectively position the long play operating rod 140 at a long play switching position and a long play release position. A wave-shaped recess 143 is formed. This long play control rod 140 also has
A regulating pin 144 that restricts movement of the drive rod 61 corresponding to the deck 3 in the direction of arrow e and a retaining portion 98 of a cam member 95 attached to the switching rod 81 selectively engage with the cam member 95. A regulating part 141 that regulates movement in the direction of the arrow m, and a pressed part 145 that is selectively pressed by the pressing part 103 of the shut-off lever 100 to move the long play operating rod 140 in the direction of the arrow X. It is being

On the other hand, a regulated portion 62 is formed in the driving rod 61 at a portion corresponding to the regulating pin 144 of the long play operating rod 140, and one end of the regulated portion 62 is formed as a part of the driving rod 61 as the driving rod 61 moves forward in the direction of the arrow e. A cam surface 107 is formed that slides on the outer periphery of the regulation bin 144 of the long play operating rod 140 and moves the long play operating rod 140 in the direction of arrow X.

Next, the long play operation means 5 configured as described above
The operation of 0 will be explained.

First, in the long play non-operating state in which the long play operating rod 1.40 is moved in the direction of the arrow X, normal and reverse running as described above and the subsequent shutoff operation are performed.

Next, when the long play operation knob 20 is switched and the long play operation rod 140 is moved in the direction of the arrow y, the long play operation state is entered. And when playback 1015.16 is pressed together, the drive rod 60.61 is moved to the operating rod 29.30.
, the deck 3 is moved forward in the direction of arrow e via the connecting levers 55, 56 and the tension spring 64.
As shown in FIG. 7B, the drive rod 61 corresponding to
44, the movement in the direction of arrow e is restricted, and the switching mechanism 30, 56, 61, 7 of the three decks is
3 is put into a pause state. In this pause state, the magnetic head 12 is not brought into contact with the magnetic tape 5 on the deck 3 side, and the pinch rollers 10 and 11 are not pressed against the capstans 8c and 8d.

On the other hand, the drive rod 60 corresponding to the deck 2 is connected to the regulation pin 14 of the long play operation rod 140, as shown in FIG. 7A.
4, the vehicle is moved forward in the direction of arrow e, and normal travel on the deck 2 side is started.

Next, when the normal running of the two decks reaches the end of the tape, the partially toothed gear 37 is rotated, and the pair of drive bins 88, 89 of the partially toothed gear 37 are connected to the cam holes 8 of the pair of switching rods 80, 81.
3.84 and move the -pair switching rod 80.81 to the 8th
Move in the direction of the arrow to the reverse switching position shown in Figures A and 8B.

Along with this, the shutoff lever 100 is rotated in the direction of arrow W by the cam portion 94 of the switching rod 8α, and the engaging claw portion 102 of the shutoff lever 100 engages the partially toothed gear 37 as shown in FIG. 8A. It is inserted into the rotation locus of the engagement convex portions 122 and 123.

On the other hand, the cam member 95 attached to the switching rod 81
As shown in Figure B, the restricting portion 141 of the long play operating rod 140 is engaged with the engaging portion 98, and movement in the direction of arrow m is restricted, so that the switching rod 81 is moved in the direction of the arrow. 6B against the tension spring 53.

Therefore, the cam portion 97 of the cam member 95 does not act on the shut-off lever 101, and the shut-off lever 101
As shown in FIG.
The engagement convex portions 122 and 123 are kept in a non-operating state in which they are removed from the rotation locus.

Next, when the reverse running on the deck 2 side reaches the end of the tape, the partially toothed gear 37 is rotated again. At this time, the engaging convex portion 122 of the partially toothed gear 37 is engaged with the engaging claw portion 102 of the shut-off lever 100, as shown in FIG. 9A, and the shut-off lever 100 is rotated in the direction of arrow W. As the shut-off lever 100 rotates, the pressing portion 103 of the shut-off lever 100 is pressed against the long play operating rod 14.
Pressed part 145 of 0 and pressed part 1 of lock plate 130
35 are pressed one after another to drive the long play operating rod 140 and the lock plate 130 in the directions of the arrows x and , respectively.

Then, by moving the lock plate 130 in the direction of the arrow,
As shown in FIG. 9A, the lock pawl 134 of the lock plate 130
The locking protrusion 57 of the operating rod 29 is unlocked, and the deck 2 side is shut off. Also,
By moving the long play operating rod 140 in the direction of the arrow X, the long play operating means 50 becomes inactive, and the 9th B
As shown in the figure, the restriction on the movement of the drive rod 61 in the direction of arrow e by the restriction pin 144 of the long play operation rod 140 is released, and the pause state on the deck 3 side is released. Note that this pause state is released as shown in FIGS. 14A1 to 14C. That is, first, as shown in FIG. 14A, the deck 3 where the restricted portion 62 of the drive rod 61 is restricted by the restriction pin 144 of the long play operation rod 140
When the pressed portion 145 of the long-play operating rod 140 is pressed by the pressing portion 103 of the shut-off lever 100 due to the rotation of the shut-off lever 100 from the pause state, the regulating pin 144 along with the long-play operating rod 140 moves to the position shown in FIG. 14B. It is moved to the position shown in . After that, the cam surface 107 of the drive rod 61 and the long play operation rod 140 are moved forward in the direction of arrow e by the spring force of the tension spring 64.
Due to the cam action with the regulating pin 144, the long play operating rod 140 is further moved to the position shown in FIG. 14C,
The deck 3 side is configured to be completely released from the paused state caused by the long play operation rod 140.

Next, as described above, the deck 2 side is shut off and the pause state of the deck 3 side is released, so the normal driving of the 3 decks will be performed (first
(See Figures 0A and 10B).

When the normal running on the deck 3 side reaches the end of the tape, the partially toothed gear 37 is rotated and the pair of switching rods 80.8
1 is moved in the direction of the arrow from the normal switching position shown in FIGS. 10A and 10B to the reverse switching position shown in FIGS. 11A and 11B, thereby switching to the reverse driving mode. At this time, the regulating portion 14 of the long play operating rod 140
The restriction on the movement of the cam member 95 of the switching rod 81 in the direction of the arrow m by the rotation of the above-mentioned shut-off lever 100 is released as shown in FIGS. 10A and 10B. , switching rod 8 by tension spring 53
Along with the movement in the direction of arrow 1, the object is moved in the direction of arrow m. 11A and 11B due to the cam action of the cam portion 97 of the cam member 95 and the pressing portion 103 of the shut-off lever 101.
As shown in the figure, the engaging claw portion 1 is rotated in the direction of arrow W.
02 is inserted into the rotation locus of the engagement convex portions 122 and 123 of the partially toothed gear 37.

Next, when the reverse running of the three decks reaches the end of the tape, the partially toothed gear 37 is rotated, and as shown in FIGS. 12A and 12B,
As shown in the figure, the locking projection 122 engages with the engagement projection 102 of the shut-off lever 100.101 to rotate the shut-off lever 100.101 in the direction of arrow W.

As the shirt-off lever 101 rotates, its pressing portion 103 slides the lock plate 131 in the direction of the arrow to unlock the lock protrusion 57 of the operating rod 30 by the lock claw 134 of the lock plate 131. , causes the deck 3 side to perform a shutoff operation.

According to the long play operation means 50 as described above, after the normal running and the subsequent reverse running of the tape cassette 90 mounted on the deck 2, the normal running and reverse running of the tape cassette 90 mounted on the deck 3 is automatically performed. The tape cassette 90 loaded on the deck 2.3 can be continuously played back or recorded.

Further, the release of the pose state on the deck 3 side, which is performed by sliding the long play operating rod 140 in the direction of the arrow Cam surface 10 of drive rod 61 using spring force of tension spring 64
Since it is configured to be performed by the cam action of 7,
Compared to the method of simply pressing the pressed portion 145 of the long-play operating rod 140 with the pressing portion 103 of the shut-off lever 100 and sliding the long-play operating rod 140, the burden placed on the partially toothed gear 37 for rotating the shut-off lever 100 is lower. can be reduced, and the life of the partially toothed gear 37 and the motor 21 that drives the partially toothed gear 37 can be extended.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various effective changes can be made based on the technical idea of the present invention.

Further, the present invention is also applicable to a double deck type recording/reproducing device that does not have a reverse mechanism.

〔Effect of the invention〕

According to the present invention, the pair of tape cassettes mounted on the pair of decks can be sequentially and automatically switched to the play state by the long play operation means. Therefore, after recording or playing back the other tape cassette, when transitioning to recording or playing back one tape cassette, it is troublesome to operate an operation button or the like to switch the switching mechanism corresponding to that one tape cassette to the play state. This eliminates the need for automatic continuous playback or recording of a pair of tape cassettes mounted on a pair of decks, and increases the added value of the double deck type recording/playback device.

Furthermore, since the long play operation means can hold one shutoff means in an inoperative state when the other shutoff means is activated, the configuration is such that the pair of shutoff means are driven by the same driving means. However, the pair of shutoff means can be separately activated. Therefore, in order to operate the pair of shutoff means separately during long play, it is not necessary to provide a pair of shutoff means drive mechanisms corresponding to each of the pair of shutoff means, and the mechanism of the apparatus is simplified. be able to.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a double-deck tape recorder having an auto-reverse mechanism, in which FIG. 1 is an overall perspective view, FIG. 2 is a side view of the same, and FIG. FIG. 4 is a schematic diagram of the drive system, FIG. 5 is an exploded perspective view of the main parts, FIGS. 6A to 12B are plan views showing the operation of the main parts, and FIG. 13 is a partially toothed gear. 14A to 14C, which are exploded perspective views of the surrounding area, are plan views showing the relationship between the long play operating rod and the driving rod. In addition, in the symbols used in the drawings, 2, 3-----------------Deck 29.3
0---------One operation lever (switching mechanism) 50・
-------------------Long play operation means 55.56----Series connection lever (switching mechanism) 60.61--・Drive rod (switching mechanism) 72.73--------・Switching lever (switching mechanism) 90--------・---11-----
Tape cassette 100----------Shut-off lever (shut-off means) 101.

Claims (1)

[Scope of Claims] A pair of decks are provided on which a pair of tape cassettes are mounted, a pair of switching mechanisms are provided for switching each of the pair of tape cassettes mounted on the pair of decks from a stop state to a play state, A pair of shut-off means are provided on the pair of decks, the pair of shutoff means being operated when each of the pair of tape cassettes mounted on the pair of decks reaches a tape end to switch the pair of switching mechanisms from a play state to a stop state, respectively; of the pair of tape cassettes installed, one of the shutoff means corresponding to one of the tape cassettes is maintained in a non-operating state;
A long play operating means is provided for holding one of the switching mechanisms corresponding to one of the tape cassettes in a pause state, and the long play operating means is operated by the other shutoff means corresponding to the other tape cassette. A double-deck recording and reproducing device configured to drive from a state to a non-operating state.