JPS636930B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a tape recorder comprising two sets of recording and reproducing mechanisms.

[Prior art]

By the way, in conventional tape recorders of this type, especially those in which both recording and playback mechanisms can be driven in succession, one recording and playback mechanism is set to a standby state for recording or playback by a pause device, and then the other is set to a standby state for recording or playback. The recording/playback mechanism of the above is set to recording or playback mode, and when the tape in the other mechanism reaches its end, the auto-stop device of the other mechanism is used to pause the recording/playback mechanism of the one of the above. The system was designed to automatically switch one of the mechanisms to recording or playback mode.

However, in this conventional tape recorder, in order to set one of the recording and playback mechanisms to the standby state for starting recording or playback as described above, the pause device must be operated after operating the record or playback button, etc. This series of operations is complicated, and it also has the disadvantage that two recording circuits are required to perform continuous recording.

[Object of the present invention]

The present invention was devised in view of these problems in conventional tape recorders, and is intended to perform continuous recording using two rotating bodies and one recording circuit.

[Configuration of the present invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The attached drawings show different operating modes of the tape recorder according to the present invention, and among these drawings, FIG. 1 shows the stop mode.

As is clear from the figure, the tape recorder of the present invention consists of a first and a second recording/reproducing mechanism, and in the figure, 1 is a main chassis common to these mechanisms, and 2 is an operation switching lever provided on the plate surface. By inserting the guide hole 2f into the guide shaft 2e protruding from the main chassis 1, arrows C and D are formed.
It is made to be able to slide in the direction.

Reference numeral 3 designates a positioning lever that is pivoted on the main chassis 1 near the operation switching lever 2, and an engager 3b provided at the free end is used to move the lever 2 along with the sliding movement of the operation switching lever 2. By selectively engaging the engagement notches 2a and 2b, the lever 2 is connected to a switch 7, which will be described later.
2 is held in the first position where it is turned off and the second position where it is turned on. This retention is made firm by the biasing force of a spring 3c which is wound around the pivot end of the positioning lever 3 and which has one end engaged with the abutment pin 3d of the main chassis and the other end engaged with the engagement element 3b. It is designed to be preserved.

4 to 6 are the recording lever, playback button lever, and stop button lever in the first recording/playback mechanism, and are stopped by inserting the guide holes 4b to 6b provided in the plate surface into the guide shafts 4a to 6a of the main chassis 1, respectively. It is configured to be able to slide in the directions of arrows A and B between the non-operating position when the lever is in operation and the operating position when the lever is in operation. It is biased to remain in place.

The recording lever 4 has an engaging portion 4d at its front end that can engage with a recording detection lever 5e, which will be described later, and an engaging portion 4c that connects to a recording switch detection lever 34 at its rear end.

In addition, the regeneration button lever 5 has a lock pin 5d that is locked to the lock plate 15c of the first lock plate 15.
Further, the stop button lever 6 is provided with a lock release pin 6d that comes into contact with the lock release portion 15d of the first lock plate 15.

Further, the playback button lever 5 pivotally supports the above-mentioned recording detection lever 5e with a shaft 5f, and the lever 5e constantly receives a rotational force in the direction of arrow F by a spring 56 suspended between the playback button lever 5 and the lever 5e. As a result, the protruding portion 5g provided at the end is brought into contact with the abutting portion 2d of the operation switching lever 2 due to the urging force, and this lever 5e is moved against the switching lever 2.
is in the first position, the engaging portion 4 of the recording lever 4 is pressed as the playback button lever 5 is pressed.
d to move the lever 4 in the direction of the operating position, and when the operation switching lever 2 is in the second position, it does not engage the recording lever 4 even though the playback button lever 5 is pressed. It is configured as follows.

Reference numerals 9 to 11 are button levers for recording, playback, and stop in the second recording/playback mechanism, and the guide shafts 9a to 11a of the main chassis 1 are inserted through guide holes 9b to 11b provided on the plate surface, respectively. It is configured to be able to slide in the directions of arrows A and B between a non-operating position when stopped and an operating position when operating;
In addition, springs 68 to 70 suspended between each lever and the main chassis 1 urge the levers to remain at the non-operating position at all times.

The recording and playback buttons 9 and 10 have lock pins 9d and 10d that are locked to the locking portions 16c and 16d of the second locking plate 16, and the stop button lever 11 has locking pins 9d and 10d that are locked to the locking portions 16c and 16d of the second locking plate 16, respectively.
It is provided with a lock release pin 11d that comes into contact with the lock release pin 6e.

The recording button lever 9 has a joining pin 9f at its front end that can be joined to a third working surface 14g of a moving lever 14, which will be described later, and an engaging part 9c at its rear end that can be joined to a recording switch detection lever 38. Moreover, an engaging protrusion 9e that engages with an engaging protrusion 10e provided on the mid-abdomen of the regeneration button lever 10 is provided on the mid-abdominal part.

Note that the first and second lock plates 15 and 16
are guide holes 15b and 16b provided on each plate surface.
are inserted into the guide shafts 15a, 16a of the main chassis 1 so that they can slide in the directions of arrows C and D, and are constantly moved in the direction of arrow D by springs 52 and 61 suspended between them and the main chassis 1, respectively. It is energized.

Further, the playback and stop button levers 5 and 6 of the first recording and playback mechanism and the record and playback and stop button levers 9 to 11 of the second recording and playback mechanism are each provided with operation buttons, although not shown. However, the recording lever 4 of the above mechanism is not provided with an operation button.

Reference numerals 8 and 13 are fully automatic levers having the same shape, respectively, and are made slidable in the directions of arrows A and B by inserting guide shafts 8a and 13a of the main chassis 1 through guide holes 8b and 13b provided on the plate surface. and connecting pins 8c and 13c provided at the front end.
respectively at each end of the moving lever 14.
and second working surfaces 14e and 14f, and the other end is appropriately connected to an auto-stop device (not shown), and when pushed in the direction of arrow B by the auto-stop operation of this auto-stop device, the above-mentioned The connecting pins 8c and 13c are connected to the first and second working surfaces 14e and 1 of the moving lever 14, respectively.
4f to move the moving lever 14 in the directions of arrows C and D.

Of these fully automatic levers, the lever 8 of the first recording/playback mechanism engages with an engaging pin 7e provided at one leg end of a Y-shaped lock release lever 7 that is pivotally supported 7a on the main chassis 1. hole 8d
The movement of the fully automatic lever 8 is transmitted to the first lock plate 15 via the engagement pin 7b at the other end of the lever 7. That is, when the full auto lever 8 is slid in the direction of arrow B by the operation of the auto-stop device, the first lock plate 15 is simultaneously moved in the direction of arrow C to perform the lock release operation. .

The lock release lever 7 is wound around the pivot portion 7a, and each end thereof is engaged with the contact pins 7b, 7c, and the end on the contact pin 7c side is further engaged with the contact pin 2c on the operation switching lever 2. Spring 6 engaged with
0, a rotational force in the direction of arrow F is applied.

On the other hand, the fully automatic lever 13 of the second recording and playback mechanism has an engagement hole 13d in an engagement pin 12c provided at one end of an L-shaped lock release lever 12 that is pivotally supported 12a on the main chassis 1. When the fully automatic lever 13 is engaged, the movement of the fully automatic lever 13 is transmitted to the second lock plate 16 via the engagement pin 12b at the other end of the lever 12. That is, when the fully automatic lever 13 is slid in the direction of arrow B by the operation of the auto-stop device, the second lock plate 16 is simultaneously moved in the direction of arrow C to perform the lock release operation.

The above-mentioned moving lever 14 is made slidable in the directions of arrows C and D by inserting the guide shaft 14a of the main chassis 1 through a guide hole 14b provided in the plate surface, and consists of inclined surfaces provided at both ends and the center. Joint pins 8c, 13c and 9 of the full auto levers 8 and 13 and the recording button lever 9 are attached to the first, second and third working surfaces 14e, 14f and 14g, respectively.
By joining f, it is configured to slide in the direction of arrow C or D.

Trigger arms 17 and 19 are L-shaped members pivoted on support shafts 17a and 19a provided on the main chassis 1, respectively, and their horizontal contact portions 17b and 19b are connected to the playback button levers 5 and 1.
0, and engagement protrusions 17d and 19d are provided at the other end. These trigger arms are given a rotational force in the direction of arrow E by springs 59 and 74 suspended between them and the main chassis 1, but the amount of rotation is regulated by contact pins 17c and 19c provided on the main chassis 1. In addition, when the abutting portions 17b, 19b are pushed by operating the playback button levers 5, 10, they are configured to rotate by a predetermined amount in the direction of arrow F against the springs 59, 74.

18 and 20 are the stop button levers 6 and 1, respectively.
1 and the rear end thereof, and guide holes 18b and 20b provided in the plate surface, respectively.
a guide shaft 18a protruding from the main chassis 1;
20a, it is made slidable in the directions of arrows A and B, and is always urged in the direction of arrow B by springs 57 and 66 suspended between it and the main chassis 1. And the operating rod 1
8 and 20 are horizontal portions of the contact portions 18d and n.
20d are opposed to the rear ends of the stop button levers 6 and 11 so that they can approach and separate from each other, and when the stop button levers are slid in the direction of arrow A, they are slid in the direction of arrow A against the springs 57 and 66, respectively. It is designed to move. Furthermore, the operating rods 18, 20 are also operated by springs 57, 66 by an auto-stop device (not shown).
It is configured to be slid in the direction of arrow A against the pressure.

Reference numerals 21 and 23 refer to sub-chassis actuating arms consisting of L-shaped members pivoted on support shafts 21a and 23a provided on the main chassis 1, respectively, and have sliding protrusions 21d and 23d on the lower surface of the horizontal portion, and end surfaces of the vertical portion. Sub chassis 35, which will be discussed later,
The contact surfaces 21b and 23b are capable of coming into contact with and separating from the contact surface 39. And these arms are the main chassis 1
A rotational force in the direction of arrow F is applied by springs 51 and 75 suspended between the contact pins 21c and 2 provided on the main chassis 1.
3c.

Locking arms 22 and 24 are L-shaped members pivoted on support shafts 22a and 24a provided on the main chassis 1, and the rotational force in the direction of arrow F is generated by springs 58 and 67 suspended between them and the main chassis 1. The engagement protrusions 22b, 24b are provided with two engagement surfaces 22c, 22d and 24c, 24d at the other end.

These locking arms 22 and 24 are connected to the operating rod 1 during locking or regeneration mode.
The springs 57 and 66 overcome the springs 58 and 67, respectively, and are biased in the direction of the arrow E through the contact pins 18c and 20c of 8 and 20.
As described above, when the operating rods 18, 20 are slid in the direction of arrow A by the operation of the stop button levers 6, 11 or the auto-stop device, they are configured to be rotated in the direction of arrow F by the springs 58, 67. There is.

In addition, the springs 57 and 6 of these stop arms
The amount of rotation by 6 in the direction of arrow E is regulated by contact pins 22e and 24e provided on the main chassis 1, respectively.

25 and 28 are cam gears that are pivotally supported on support shafts 25a and 28a provided on the main chassis 1, and have toothless portions 25g and 28g on the peripheral tooth portions, and the toothless portion 25g on the upper surface. and 28g
a first protrusion 25f that engages with the engagement protrusions 22b and 24b of the locking arms 22 and 24, respectively;
and 28f. Also, this cam gear 25
The support shafts 25a and 28 are further provided on the upper surface of the support shafts 25a and 28.
The cams 25b and 28b are provided with annular bands whose radius of curvature gradually changes around 8a, and the outer periphery of the cams 25b and 28b includes a portion facing the toothless portions 25g and 28g, and a portion opposite to the portion. The side part has a second part that protrudes outward from the diameter.
The projections 25e and 28e and the third projection projecting upward.
Protrusions 25d and 28d are provided.

The inner surfaces 25 of the cams 25b and 28b
c and 28c are the forward subchassis operating arms 21
and 23 sliding protrusions 21d and 23d are configured to be in sliding contact with each other, and in particular, in modes other than recording or playback, the maximum diameter portions 25c ₂ and 28c ₂ are positioned on the sliding protrusions 21d and 23d, respectively, to operate the sub-chassis. Arms 21 and 23 are connected to spring 5
1 and 75, the contact pins 21c and 2
3c, while in the recording or playback mode, the minimum diameter portions 25c ₁ and 28c ₁ are slid on the sliding protrusions 21d and 23d, respectively, so that the sub-chassis operating arms 21 and 23 are in contact with the spring 51.
and 75 in the direction of arrow E to place sub-chassis 35 and 39, which will be described later, into an operating position for recording or playback mode.

Incidentally, sloped portions 25c ₃ and 28c ₃ are formed at intermediate portions between these minimum and maximum diameter portions.

26 and 29 are pulleys 26b and 29b attached to support shafts 26a and 28a provided on the main chassis 1.
The pulleys 26b and 29b are connected to the pulleys 26b and 29b through transmission belts 77 and 78 stretched between the pulleys 26b and 29b and the pulleys 27b and 30b attached to the motor shafts 27a and 30a, respectively. are simultaneously driven by the drive motors 27 and 30, and when the teeth of the cam gears 25 and 28 mesh, the cam gears 25 and 28 are driven. Note that the trigger arms 17 and 19 are in the stopped state.
The engaging protrusions 17d and 19d of the cam gears 25 and 28 engage with the third protrusions 25d and 28d, respectively.
is configured such that its toothless portions 25g and 28g are opposed to drive gears 26 and 29.

Reference numerals 35 and 39 form a sub chassis supported on the main chassis 1 in the directions of arrows A and B by inserting guide shafts 35a and 39a protruding from the main chassis 1 through guide holes 35b and 39b provided on the plate surface, respectively. Erasing heads 40 and 42 and recording and reproducing heads 41 and 42 are fixedly provided on the top, and recording switch detection levers 34 and 38 are pivotally supported by support shafts 34a and 38a, and are suspended between the recording switch detection lever and the recording switch detection lever. By rotating and biasing the levers 34, 38 in the direction of arrow E using the springs 47, 64, the engagement pins 34b, 38b provided at the front ends of the recording switch detection levers 34, 38 can be turned into the recording switch. It is adapted to engage with the engaging portions 4c and 9c of the lever 4 and the recording button lever 9.

Further, these sub chassis 35, 39 have springs 49, 63 suspended between them and the main chassis 1.
The subchassis actuating arms 21 and 23 are at a stop position in which the heads 40, 41 and 42, 43 are constantly urged in the direction of arrow B and separated from the tape (not shown) in the cassette, and in the direction of arrow A at the subchassis operating arms 21 and 23. The head can be slid in the direction of the tape to an operating position in which both heads are in complete sliding contact with the tape.

Reference numerals 50 and 65 are actuating springs which are wound around support shafts 50a and 65a which protrude from the main chassis 1, respectively, and have one end engaged with perpendicular pins 50b and 65b which protrude from the main chassis 1;
and the other end of the third cam gears 25 and 28.
The protrusions 25d and 28d can be engaged with and disengaged from the protrusions 25d and 28d, respectively, and when engaged, the cam gears 25 and 28 are provided with a rotational force in the direction of arrow E.

When the activation springs 50 and 65 are in contact with the third protrusions 25d and 28d, they are contracted and become in an energy storage state, and the engagement protrusions 17d and 19d of the trigger arms 7 and 19 and the cam gear 25
and 28 are disengaged from the third protrusions 25d and 28d, causing the cam gears 25 and 28 to rotate in the direction of arrow E.

50c and 65c, when the activation springs 50 and 65 disengage from the third protrusions 25d and 28d,
This is a stop pin that prevents the activation springs 50 and 65 from expanding too much.

In addition, the engaging protrusions 17 of the trigger arms 17 and 19
The engagement by d and 19d is released and the cam gear 25
and 28 are caused to rotate in the direction of arrow E, the cam gears 25 and 28 mesh with the drive gears 26 and 29 to further rotate.

Reference numerals 31 and 36 are recording switch levers, which are supported slidably in the directions of arrows A and B by inserting guide shafts 31a and 36a provided in the main chassis 1 through guide holes 31b and 36b provided in the plate surface. The engaging portions 31d and 36 are always biased in the direction of arrow B by springs 48 and 62 suspended between the main chassis 1 and the engaging portions 31d and 36 provided at side edges.
With d, the recording switch detection lever 34,3
8 engaging portions 34c, 38c.

Reference numerals 32 and 37 designate connection levers pivotally supported on support shafts 32a and 37a protruding from the main chassis 1, respectively, and engagement pins 32c and 3 protruding from one end.
7c is configured to be able to engage with the end surfaces 31c and 36c of the recording switch levers 31 and 36,
Further, the engaging pins 32b and 37b protruding from the other end are the engaging portion 3 of the recording switch switching lever 33, which will be described later.
3c and 33e.

The recording switch switching lever 33 can be operated by passing the guide shaft 33a protruding from the main chassis 1 through a guide hole 33b provided on the plate surface.
The main chassis 1 is supported so as to be slidable in this direction, and is always biased in the direction of arrow C by a spring 46 suspended between it and the main chassis 1.

Reference numeral 44 designates a head changeover switch provided on the main chassis 1 to be switched by contacting the rear end of the recording switch lever 31, and is turned ON and OFF by contacting the engaging portion 33d of the recording switch changeover lever 33. 5th along with recording switch 45.
As shown in the figure, the first and second recording and playback mechanisms,
Recording/playback heads 41 and 43 and recording circuit REC
electrically connected to. Note that this head changeover switch 44 always switches the head 4 on the second recording/playback mechanism side unless pressed by the recording switch lever 31.
3 is selected.

Reference numeral 72 denotes an operation changeover switch provided on the main chassis 1, which is connected to the engagement portion 2 of the operation changeover lever 2.
73 is a power changeover switch provided on the main chassis 1, which engages with the engaging portion 14c of the movable lever 14, so that the movable lever 14 It turns on and off depending on the movement of the

Both switches 72, 73 are electrically connected to the drive motors 27, 30, capacitor C, power switches 79, 80, etc. as shown in FIG.

The power switches 79 and 80 are connected to the drive motor 27 of the first and second recording and playback mechanisms.
It directly opens and closes 30 electric circuits, and each mechanism is linked to each button lever to turn on and off.
It is meant to be done.

[Operation of the present invention]

The present invention is constructed as described above,
The effect will be explained below.

(1) Regarding the stop mode (see Figure 1); In this mode, the first and second recording/playback mechanisms and their button levers are both placed in the non-operating position, the sub-chassis 35 and 39 are placed in the stop position, and , the cam gears 25 and 28 are held at positions where their toothless portions 25g and 28g correspond to the drive gears 26 and 29.

In addition, especially in the stop mode shown in FIG. 1, the drive of the first recording/playback mechanism that had been driven is stopped, which is linked to the auto-stop device and is indicated by the arrow B.
The moving lever 14 is pushed in the direction of arrow C by the fully automatic lever 8 which has been slid in the direction shown in FIG. . Further, the operation changeover lever 2 is engaged with the engagement member 3b of the positioning lever 3 through the engagement notch 2a, and the operation changeover switch 72 is turned OFF (first position).

(2) Regarding mode switching from stop mode to continuous recording mode (see Figures 2 and 3); From the stop mode as described above, next switch the second and first recording and playback mechanisms to continuous recording mode. The case of setting will be explained.

Now, the stop mode as shown in FIG. mode), the recording button lever 9 of the second recording/playback mechanism is pressed by the spring 6.
8 in the direction of arrow A from the non-operating position, the regeneration button lever 10 also slides in the same direction in conjunction with this due to the engagement of the engagement protrusions 9e and 10e, and both levers 9 and 10 respectively Lock pin 9d,
10d to lock part 1 of second lock plate 16
6c, 16b and placed in the operating position.

In this case, the moving lever 14 is moved to the first position.
As shown in the figure, the third working surface 14g of the connecting pin 9f of the recording button lever 9 is pushed in the direction of arrow C.
Since the recording button lever 9 is not located in the movement path of the connecting pin 9, even if the recording button lever 9 is pushed in the direction of arrow A,
f can retreat in the direction of arrow A without joining to the third working surface 14g. However, depending on the operating state of the tape recorder just before, this moving lever 14 may temporarily move to the third working surface 14g.
is positioned in the movement path of the joining pin 9f (in short, the power selector switch 73
Even if the third working surface 14g is an inclined surface, when the connecting pin 9f hits the inclined surface by pressing the recording button lever 9, the moving lever 14 moves in the direction of arrow C. There is no possibility that the third operating surface 14g will deviate from the movement path of the joining pin 9f by sliding in the direction, thereby preventing the recording button lever 9 from being pressed. At this time, since the moving lever 14 is slid in the direction of arrow C, the power selector switch 73 is turned on to the drive motor 30 side, and if the power switch 80 is turned on, the drive motor 3 is turned on.
0 can be driven.

As the recording button lever 9 and the playback button lever 10 slide in the direction of the arrow A as described above, the recording switch detection lever 38 connected to the engaging portion 9c of the recording button lever 9 on the other hand is rotated in the direction of arrow F against the spring 64 to bring its engaging portion 38c to a position where it can engage the engaging portion 36d of the recording switch lever 36, and on the other hand, the trigger arm 19 is rotated against the spring 74. The engaging protrusion 19d is rotated in the direction of arrow F.
and the third protrusion 28d of the cam gear 28 is released.

Therefore, in conjunction with the disengagement of both protrusions 19d and 28d, the cam gear 28 applies a rotational force in the direction of arrow E via the third protrusion 28d by the activation spring 65, which had been in an energy storage state until then. The drive gear is rotated by the drive motor 30 (which is driven when the power switch 80 is turned on by operating the button levers 9 and 10), which is already being driven. 29 and is further rotated in the same direction.

As the cam gear 28 rotates, the diameter of the cam inner surface 28c in contact with the sliding protrusion 23d gradually decreases, so the sub-chassis operating arm 23 rotates in the direction of arrow E against the spring 75, and the contact surface 23b The sub-chassis 39 is gradually slid backward from the stop position in the direction of arrow A. In addition, as the sub-chassis 39 moves back, the recording switch detection lever 38 also moves back in the same direction with the recording button lever 9 being shifted in the direction of the arrow F as described above, and the engaging portion 38 is moved back in the same direction.
c is engaged with the engaging portion 36d of the recording switch lever 36, and the lever 36 is also slid in the same direction. The retraction of the lever 36 is transmitted to the recording switch switching lever 33 via the connecting lever 37.
The lever 33 is gradually slid in the direction of arrow D.

Next, when the cam gear 28 rotates almost uniformly from the beginning and the toothless portion 28g comes to oppose the drive gear 29, that is, the first protrusion 28f engages with the engagement protrusion 24b of the locking arm 24. The cam gear 28 is no longer driven by the drive gear 29 just before the sliding protrusion 23d touches the cam inner surface 2.
In contact with the minimum diameter portion 28c ₁ of 8c, and furthermore, the slope portion 2
8c ₃ , the cam gear 28 receives a rotational force in the direction of the arrow E from the spring 75 via the sliding protrusion 23d, and continues to rotate a little, causing the first protrusion 28f of the locking arm 24 to rotate. By engaging with the engagement protrusion 24b, its rotation is prevented.

As a result, the sub-chassis operating arm 23
slide the sub-chassis 39 to the most retracted position and move the erase/record/play heads 42 and 43 to the first position.
cassette (not shown) and held in place.

In this state, the tape begins to be run at a constant speed by a constant speed drive mechanism (not shown) which is driven in conjunction with the playback button lever 10 being locked in the operating position.

Moreover, on the other hand, the above-mentioned recording switch detection lever 3
8 is further moved backward, and the recording switch switching lever 33 is further slid in the direction of arrow D via the levers 36 and 37, thereby turning on the recording switch 45.

Therefore, the recording/reproducing head 43 is connected to the recording circuit through the head changeover switch 44, which is placed in a preselected position.
By electrically connecting the REC, appropriate music, etc., is recorded on the tape in the first cassette.

With the above, the second recording/playback mechanism first becomes the recording mode.

Next, when the playback button lever 5 of the first recording/playback mechanism is pressed in the direction of arrow A from the non-operating position against the spring 54, the playback button lever 5 locks the first lock plate 1 with the lock pin 5d.
5 and placed in the operating position.

As the playback button lever 5 slides in the direction of arrow A, on the other hand, the recording detection lever 5e
is guided by the protruding portion 5g to the contact portion 2d of the operation switching lever 2 and retreats in the same direction A, causing the recording lever 4 to retreat in the same direction. The connected recording switch detection lever 34 is rotated in the direction of arrow F against the spring 47, and the engaging portion 34c is rotated in the direction of arrow F.
The trigger arm 17 is rotated in the direction of arrow F against the spring 59, and the engaging protrusion 17
d and the third protrusion 25d of the cam gear 25 is released.

Therefore, this trigger arm 17 and cam gear 2
5 is disengaged, the cam gear 25 is in an energy storage state until then, and the activation spring 5 is released.
0, it is rotated in the direction of arrow E via the third protrusion 25d and meshes with the drive gear 26.

However, at this time, as mentioned above, the power selector switch 73 has selected the drive motor 30 of the second recording and playback mechanism, and the drive motor 27 is not energized, so the motor 27 is not driven. The cam gear 25 is a drive gear 26.
Stops rotation while remaining engaged.

In short, the first recording/reproducing mechanism enters the recording standby state based on the pressing of the reproduction button lever 5.

With the above, the mode of the tape recorder has been switched from stop mode to continuous recording mode.

In the above explanation, the case where the recording button lever 9 of the second recording/playing mechanism and the playback button lever 5 of the first recording/playing mechanism are pressed in this order has been explained, but as shown in FIG. turns off the switch 72, while if the movable lever 14 turns the power selector switch 73 to the drive motor 30 side of the second recording/playback mechanism, the record button lever 9 and the playback button lever 5 are turned off at the same time or the latter is turned off. It goes without saying that even if the operation is performed prior to the former, the mode can be switched from the stop mode to the continuous recording mode in the same way.

(3) Continuous recording mode; Now that the tape recorder has been converted to continuous recording mode as described above, in this continuous recording mode, as mentioned above, the first recording and playback mechanism is in the recording standby state, and first , the second recording/playback mechanism enters the recording mode and records music or the like as appropriate onto the tape in the second cassette.

Then, when the second recording/playback mechanism has finished recording and reaches the end of the tape, the auto-stop device of the mechanism operates to move the full-auto lever 13 in the direction of arrow B and to move the operating rod 20.
slide in the direction of arrow A.

Therefore, by sliding the full auto lever 13, the second lock plate 16 is moved in the direction of arrow C via the lock release lever 12, and the recording and playback buttons are activated by the second lock plate. The levers 9, 10 are unlocked, and the levers 9, 10 are returned to the non-operating position by the return force of the springs 68, 69, and the trigger arm 19 is returned to its original state by the return force of the spring 74, so that the levers 9, 10 are not engaged. The mating protrusion 19d is placed in a position where it can engage with the third protrusion 28d of the cam gear 28.

On the other hand, the fully automatic lever 13 moves the moving lever 14 in the direction of arrow D via its connecting pin 13 and second operating surface 14f.

As a result, when the recording and playback button levers 9 and 10 return, the power switch 80 is turned off and the power to the drive motor 30 is cut off, and the power selector switch 73 is switched to the drive motor 27 side by the movement of the moving lever 14. .

Further, as the operating rod 20 moves in the direction of the arrow A, the locking arm 24 is rotated in the direction of the arrow F by the biasing force of the spring 67, so that the engagement protrusion 24b engages with the first protrusion 28f of the cam gear 28. Since the cam gear 28 is released from engagement with the second protrusion 28e and placed in the waiting position for engagement with the second protrusion 28e, the cam gear 28 contacts the sliding protrusion 23d with the slope portion _28c3 of the cam inner surface 28c in the recording mode. Based on the fact that the projection 23d and the sub-chassis operating arm 23
(Of course, at this point, the biasing force of the activation spring 50 is smaller than that of the spring 75.) The second protrusion 25e rotates in the direction of the arrow E, and the second protrusion 25e engages the locking arm 24. Once it engages with the engagement protrusion 24b, the rotation is temporarily stopped.

At this time, the sliding protrusion 23d is inserted into the cam inner surface 28c.
Since the sub-chassis operating arm ₂₃ is returned to the above-mentioned stop position by the urging force of the spring 75, the sub-chassis 39 is also removed from the tape by the spring 63. It returns to the stopped position from which it was separated. Next, the auto-stop operation of the auto-stop device is completed and the operating lever 2
0, the locking arm 24 is returned to the stop position by the spring 66.

Further, in accordance with the return operation of the locking arm 24, the engagement between the engagement protrusion 24b and the second protrusion 28e is released, and at this time, the cam gear 28 is moved to the third position.
Since the cam gear 28 is rotated in the direction of the arrow E by the activation spring 65 via the projection 28d, the cam gear 28 is rotated in the direction of the arrow E by the activation spring 65, and the third projection 28d
Trigger arm 1 has already returned to the stop position.
The rotation is stopped by contacting the engagement protrusion 19d of No.9.

In this state, the drive of the constant speed drive mechanism has already stopped due to the return of the playback button lever 10 to the non-operating position, and the tape has stopped running.

Furthermore, as the sub-chassis 39 returns, the recording switch lever 36 also returns due to the return force of the spring 62.
3 also releases the pressure on the connecting lever 37, so it returns to its original position by the restoring force of the spring 46, and the recording switch 45 is turned off.

This means that only the second recording/playback mechanism is in the stop mode.

Further, as described above, the movable lever 14 moves in the direction of arrow D due to the action of the full auto lever 13, and the power selector switch 73 is switched to the drive motor 27 side, so that the motor 27 is driven and the drive gear is turned off. Rotate 26.

Therefore, the cam gear 25, which has been in mesh with the driving gear 26 and waiting as described above, immediately begins to rotate, and after approximately one revolution, the third protrusion 25f is engaged with the engagement protrusion 22b of the locking arm 22. Until the rotation is stopped, the sub-chassis operating arm 21 is used to bring the sub-chassis 35 to the operating position in the same way as the cam gear of the second recording/playback mechanism, and the recording switch detecting lever 34 detects the sliding of the sub-chassis 35. The signal is transmitted to the recording switch lever 31 via the recording switch lever 31 and further to the recording switch switching lever 33 via the connecting lever 32, and by moving the lever in the direction of arrow D, the recording switch 45 is turned ON again. Also, the above lever 3
1, the head changeover switch 44 switches the recording/reproducing head 41 of the first recording/reproducing mechanism to be connected to the recording circuit REC.

As described above, the first recording/playback mechanism automatically enters the recording mode following the mechanism, and music is appropriately recorded through the head 41 onto the tape in the first cassette that is run at a constant speed by the constant speed drive mechanism. Ru.

(4) Regarding mode switching from continuous recording mode to stop mode (see Figure 4); Now, in the continuous recording mode as described above, the above recording operation of the first recording and playback mechanism following the second recording and playback mechanism is as follows. When the end of the tape is reached, the auto-stop device of the mechanism is activated to slide the fully automatic lever 8 in the direction of arrow B and the operating rod 18 in the direction of arrow A.

Therefore, based on such sliding of the fully automatic lever 8, the movable lever 14 first moves to the first working surface 1.
4e, the lever 8 is pushed by the connecting pin 8c and moved in the direction of arrow C, the power selector switch 73 is switched to the drive motor 30 side, and the first lock plate 15 is rotated by the sliding of the fully automatic lever 8. By being pushed by the moving lock release lever 7,
The regeneration button lever 5 is unlocked by sliding in the direction of the arrow C, and the operation switching lever 2 receives the rotation of the lock release lever 7 via the spring 60, thereby overcoming the resistance of the spring 71. It slides in the direction D and reaches the second position, where it is locked to the positioning lever 3 through the engagement notch 2b and the operation changeover switch 72 is turned on.

When the regeneration button lever 5 is unlocked, the lever 5 is returned to the non-operating position by the return force of the spring 54, and the operating rod 18 slides in the direction of arrow A, causing the locking arm 22 to move. By rotating in the direction of arrow F and disengaging the engagement protrusion 22b from the third protrusion 25f of the cam gear 25, the cam gear 25 stops the cam gear 28 of the second recording/playback mechanism from the recording mode. The sub chassis 35 is returned to the stop position by performing the same operation as that performed when shifting to the mode.

In response to the return of the sub-chassis 35, the recording switch lever 31 and the recording switch switching lever 33 are returned to their original positions by springs 46 and 48, respectively, the head switching switch 44 is switched to the recording/playback head 43 side, and the recording switch is Turn off 45.

Further, the recording lever 4 is returned to the non-operating position by the return force of the spring 53. Also, by moving the operation switching lever 2 to the first position, the recording detection lever 5e moves in the direction of the arrow E against the spring 56.
direction and is held at a position where it avoids engagement with the engaging portion 4d of the recording lever 4.

As described above, the tape recorder is in the stop mode shown in Fig. 4, but unlike the stop mode shown in Fig. 1 above, that is, the stop mode in which continuous recording can be set, this stop mode is different from the stop mode shown in Fig. 1 above, that is, the stop mode in which continuous recording can be set.
The operation selector switch 72 is in the first position.
Since it is in the ON state, when the record button lever 9 and the play button lever 5 are pressed simultaneously or sequentially as in the case where continuous recording can be set as described above and the transition is made from the stop mode to the continuous recording mode, both drive motors 27 , 30 are energized at the same time, continuous recording is not possible.

However, in the stop mode shown in FIG. 4, since the switch 72 is turned on as described above, the first and second recording and playback mechanisms can be operated independently by pressing the respective operation button levers. It means that it can work independently.

For example, in the case of the first recording/playback mechanism, by pressing the playback button lever 5 and locking it to the first lock plate 15, the cam gear 25 rotates approximately one revolution to move the sub-chassis 35 as described above. It is brought to the operating position through the operating arm 21 and enters a so-called regeneration mode.

In this case, as mentioned above, the recording detection lever 5
Since e is displaced by the operation switching lever 2 against the spring 56, the recording lever 4 does not operate even if the playback button lever 5 is pressed as shown in the upper and lower case.
Therefore, the recording circuit REC does not operate.

In the case of the second recording/playback mechanism, by pressing the record button lever 9 and locking the lever 9 to the second lock plate 16 at the same time as the playback button lever 10, the cam gear 28 is locked as described above. rotates approximately one turn to bring the sub-chassis 39 to the operating position through the sub-chassis operating arm 23, and as the sub-chassis 39 moves, the recording button lever 9, the recording switch lever 36, the connection lever 37, and the recording switch switching lever 33 are moved.
The recording switch 45 is turned on via the switch to enter the so-called recording mode. In addition, in this mechanism, by pressing only the playback button lever 10 and locking the lever 10 to the second lock plate 16,
As described above, the cam gear 28 rotates approximately once to move the sub-chassis 39 to the sub-chassis operating arm 23.
It is brought to the operating position through the switch and enters the so-called regeneration mode.

Furthermore, by driving both of the above mechanisms at the same time so that the former is in the above-mentioned playback mode and the latter is in the recording mode, a copy mode is created in which the music played by the mechanism is copied onto the tape of the mechanism.

Incidentally, in the above embodiment of the present invention, only the continuous recording mode has been described, but even if the operation changeover lever 2 is set to the first and second positions and the operation changeover switch 72 is turned OFF, the recording detection lever 5e
A third position is also taken in which the button is rotated against the spring 56 to a position where it cannot come into contact with the recording lever 4, and a joining pin is added to the lower surface of the playback button lever 10, and this joining pin is attached to the moving lever 14. It is clear that by providing a further inclined working surface which contributes to the pushing of the moving lever 14 in the direction of the arrow C by the pin, a continuous regeneration mode is obtained which automatically switches from mechanism to mechanism. It is.

[Actions and effects of the present invention]

Since the present invention is constructed as described above, when the two sets of recording/playback mechanisms are set to the continuous constant speed drive mode for recording or playback, it is not necessary to operate both recording/playback mechanisms individually and individually. This is an excellent invention that can provide a tape recorder that can be returned to a stop mode that can be switched to a constant speed drive mode, and therefore there is no fear that the user will make an erroneous operation.

[Brief explanation of the drawing]

Of the attached drawings, FIGS. 1 and 4 are plan views showing different stop modes in the tape recorder of the present invention, FIGS. 2 and 3 are operating state diagrams for explaining the continuous recording mode, and FIGS. FIG. 5 is an electric circuit diagram showing the recording circuit, and FIG. 6 is an electric circuit diagram showing the drive circuit of the drive motor. : first recording and playback mechanism, : second recording and playback mechanism, 2: operation switching lever, 14: movement lever,
72: Operation selection switch, 73: Power selection switch.

Claims (1)

[Claims] 1. In a tape recorder provided with first and second recording/playback mechanisms, each of which is equipped with an auto-stop device that automatically stops a cassette tape at a constant speed drive at the end of the tape, the first and second recording/playback mechanisms are It is possible to switch between a first stop mode in which the regeneration mechanism can be individually switched to a constant speed drive mode, and a second stop mode in which the regeneration mechanism can be automatically switched to a continuous constant speed drive mode in which it is continuously driven at a constant speed. and the automatic stop of the first or second recording and reproducing mechanism that was subsequently driven at a constant speed when the mode of both of the recording and reproducing mechanisms is switched from the second stop mode to the continuous constant speed driving mode. The apparatus further comprises a connecting means for connecting the auto-stop device and the controlling means so that the controlling means is actuated by the tape end detection operation of the apparatus and both the recording and reproducing mechanisms are set to the first stop mode. tape recorder.