JPS636931B2 - - 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 can be used as 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 the guide shafts 4a to 6a of the main chassis 1 are inserted through the guide holes 4b to 6b provided in 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, and is always operated by springs 53 to 55 suspended between the main chassis 1 and each lever. It is biased to remain in the operating position.

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.

Further, the regeneration button lever 5 is provided with a lock pin 5d that is locked into the lock portion 15c of the first lock plate 15, and 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. There is.

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 as to be able to 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 connecting pins 8c and 13c are connected to the first and second working surfaces 14e and 14e of the moving lever 14, respectively.
14f and move the moving lever 14 in the direction of arrows C and D.
It is configured to move in the direction.

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/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 the arrow B by the operation of the auto-stop device, the second lock plate 16 is simultaneously moved in the direction of the arrow C to perform an unlocking 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.

17 and 19 are trigger arms made of L-shaped members pivoted on support shafts 17a and 19a provided on the main chassis 1, respectively, and the horizontal parts of the trigger arms 17b and 19b are connected to the playback button lever 5,
10, and engagement protrusions 17d and 19d are provided at the other end. and,
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 determined by the contact pins 17c and 19c provided on the main chassis 1.
and is configured to rotate by a predetermined amount in the direction of arrow F against the springs 59, 74 when the contact portions 17b, 19b are pushed by the operation of the playback button levers 5, 10. .

18 and 20 are the stop button levers 6 and 1, respectively.
1. Guide holes 18b and 20b are provided in the plate surface of the operating rod, respectively, and are arranged to be engaged with the rear end of 1.
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 2.
0d 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 slide 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 the end surface of the vertical portion. Sub chassis 35, which will be described 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 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. Engagement protrusions 22b and 24b having two engagement surfaces 22c and 22d and 24c and 24d at the other end are provided.

These locking arms 22, 24 are connected to the operating rods 18, 24 during the stop or regeneration mode.
Although the springs 57 and 66 are biased in the direction of arrow E through the contact pins 18c and 20c of 20, overcoming the springs 58 and 67, respectively, the operating rods 18 and 20 are biased against the stop button levers 6 and 20, respectively. 11 or by operating the auto-stop device, press arrow A.
When it is slid in this direction, it is configured to be rotated in the direction of arrow F by springs 58 and 67.

In addition, the springs 57 and 6 of these locking 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.
Cams 25b and 28b are provided with annular bands whose radius of curvature is gradually changed around 8a, and a portion on the outer periphery of the cams 25b and 28b faces the toothless portions 25g and 28g, and a portion opposite to the portion. The side portions are provided with second protrusions 25e and 28e that protrude radially outward and third protrusions 25d and 28d that protrude upward.

The inner surfaces 25 of the cams 25b and 28b
c and 28c, the subchassis operating arm 21
and 23 sliding protrusions 21d and 23d are configured to be in sliding contact with each other, and especially 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, and the sub-chassis operating arm is operated. 21 and 23 to spring 51
and 75, the contact pins 21c and 23
In the recording or playback mode, the minimum diameter portions 25c ₁ and 28c ₁ are brought into sliding contact with the sliding protrusions 21d and 23d, respectively, so that the sub-chassis actuating arms 21 and 23 resist the springs 51 and 75. The sub-chassis 35 and 39, which will be described later, are rotated in the direction of arrow E to place the sub-chassis 35 and 39 in the recording or playback mode operating position.

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.
drive gears pivotally supported together with pulleys 26b and 29b and motor shafts 27a and 30a, respectively.
The pulleys 26b and 29b are connected to the drive motor 27 through transmission belts 77 and 78 stretched between the pulleys 27b and 30b attached to the
and 30, and when the teeth of the cam gears 25 and 28 mesh with each other, the cam gears 25 and 28 are driven. Note that the trigger arms 17 and 1 are in the stopped state.
9 engaging protrusions 17d and 19d and third protrusion 25d
and 28d are engaged with the cam gears 25 and 28d, respectively.
8 connects the toothless parts 25g and 28g to the drive gear 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 head 40, 41, and 42, 43 are always urged in the direction of the arrow B at the stop position where they are separated from the tape (not shown) in the cassette, and the subchassis operating arms 21, 23 are at the stop position in the direction of the arrow B. It can be slid in the A direction to take an operating position in which both heads are in complete sliding contact with the tape.

Reference numerals 50 and 65 are starting springs which are wound around support shafts 50a and 65a that protrude from the main chassis 1, respectively, and have one end engaged with perpendicular pins 50b and 65b that 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 the cam gears 25 and 28 are applied with rotational force in the direction of arrow E when engaged.

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 engage the engagement protrusions 17d and 19d of the trigger arms 17 and 19 and the cam gear 2.
When the cam gears 5 and 28 are disengaged from the third protrusions 25d and 28d, the cam gears 25 and 28 are caused to rotate in the direction of the arrow E.

50c and 65c are contact pins that prevent the activation springs 50 and 65 from expanding too much when the activation springs 50 and 65 are disengaged from the third projections 25d and 28d.

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.

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. along with the recording switch 45.
As shown in the figure, the recording/reproducing heads 41 and 43 of the first and second recording/reproducing mechanisms and the recording circuit are shown.
Electrically connected to REC. Note that this head selector switch 44 is the same as the recording switch lever 3.
1, the head 43 on the second recording mechanism side is always 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/reproducing mechanisms and their button levers are both placed in the non-operating position, and the sub-chassis 35 and 39 are placed in the stop position, and further, The cam gears 25, 28 are held at positions where their toothless portions 25g, 28g correspond to the drive gears 26, 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 switching lever 2 is engaged with the engaging element 3b of the positioning lever 3 through the engagement notch 2a, and the operation switching lever 2 is in the first position in which the operation switching switch 72 is turned off.

(2) Regarding mode switching from stop mode to continuous recording mode (see Figures 2 and 3); From the stop mode as described above, next set the second and first recording and playback mechanisms to continuous recording mode. Let's explain the case.

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 and 16d 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 immediately before this moving lever 14, it is assumed that the third working surface 14g is positioned in the moving path of the joining pin 9f (in short, the power selector switch 73 is on the motor 27 side). Even if the third operating surface 14g is an inclined surface, if the joining pin 9f hits the inclined surface by pressing the recording button lever 9,
The moving lever 14 slides in the direction of the arrow C and does not cause the third operating surface 14g to deviate from the moving path of the joining pin 9f, thereby preventing the recording button lever 9 from being pressed. However, at this time, the moving lever 14 is moved in the direction of arrow C.
Since the power switch 73 is turned on to the drive motor 30 side and the power switch 80 is turned on, the drive motor 30 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 with the engaging portion 36d of the recording switch lever 36, and on the other hand, as the lever 10 slides, Then, the trigger arm 19 is rotated in the direction of arrow F against the spring 74, and the engagement projection 19d of the trigger arm 19 disengages from the third projection 28d of the cam gear 28.

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-shear operating arm 23 rotates in the direction of arrow E against the spring 75 and rotates the contact surface 23b. Sub chassis 39 through
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 is also moved back in the direction of the arrow F by the recording button lever 9 as described above, and the engaging portion 38c is moved back to the recording switch lever 9. 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, and the lever 33 is gradually slid in the direction of arrow D.

Next, when the cam gear 28 rotates approximately once 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. Immediately before this, the cam gear 28 is no longer driven by the drive gear 29, but at this time the sliding protrusion 23d comes into contact with the minimum diameter portion 28c ₁ of the cam inner surface 28c, and further slides toward the slope portion 28c ₃ . Therefore, cam gear 28
The spring 75 is inserted through this sliding protrusion 23d.
As a result, rotational force in the direction of arrow E is obtained, and the rotation continues a little, and the first protrusion 28f engages with the engagement protrusion 24b of the locking arm 24, thereby preventing the rotation.

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.
Since it is electrically connected to the REC, music and the like are appropriately 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 recording switch detection lever 34 connected to the spring 47
The engaging portion 34 is rotated in the direction of arrow F against the
c to a position where it can engage with the engaging portion 31d of the recording switch lever 31, and
On the other hand, the trigger arm 17 is rotated in the direction of arrow F against the spring 59, and its engagement protrusion 1
7d and the third protrusion 25d of the cam gear 25 is released.

Therefore, this trigger arm 17 and cam gear 2
5 is disengaged, this cam gear 25 releases the activation spring 5 which had been in an energy storage state until then.
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/playback mechanism and the first recording/playback button lever 5 are pressed in this order has been explained, but as shown in FIG. of
On the other hand, if the movable lever 14 is switching 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 on before the former. It goes without saying that the mode can be switched from stop mode to continuous recording mode in the same way by operating the device.

(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.

As the recording by the second recording/playback mechanism progresses and the tape reaches its end, 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 2.
0 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 button lever is activated by the second lock plate. 9 and 10 are released, both levers 9 and 10 are returned to the non-operating position by the return force of the springs 68 and 69, and the trigger arm 19 is returned to its original state by the return force of the spring 74, and its engagement is released. The mating protrusion 19d is connected to the cam gear 2.
The position is such that it can engage with the third protrusion 28d of No.8.

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 connected to the cam inner surface 28c ₂
Since the subchassis operating arm 23 is located at
is returned to the above-mentioned stop position by the biasing force of the spring 75, and at the same time, the sub-chassis 39 is also returned to the stop position by the spring 63, where both heads 42, 43 are separated from the tape. Next, the auto-stop operation of the auto-stop device is completed, and the locking arm 24 as well as the operating rod 20 are returned to the stop position by the spring 66.

Further, in accordance with the return movement 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 disengaged from the third protrusion 28e.
8d, the cam gear 28 is rotated in the direction of arrow E by the starting spring 65, and the third protrusion 28d has already stopped. The rotation of the trigger arm 19 is stopped by contacting the engagement protrusion 19d of the trigger arm 19 which has returned to its position.

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 it stops rotating, 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/reproducing mechanism, and the sliding of the sub-chassis 35 is detected via the recording switch detection lever 34. Recording switch lever 31
Furthermore, the signal is transmitted 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 4 is switched.
Turn on 5 again. Further, by retracting the lever 31 in the direction of arrow A, the head changeover switch 44 switches the recording/playback head 41 of the first recording/playback mechanism.
Switch to connect 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, respectively.

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 moves 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. do. When pushed by the lock release lever 7, it slides in the direction of arrow C to release the lock of the regeneration button lever 5, and further, the operation switching lever 2 receives the rotation of the lock release lever 7 via the spring 60. Overcoming the resistance of the spring 71, it slides in the direction of arrow D and reaches the first position, where it is engaged with 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 switches the cam gear 28 of the second recording/reproducing mechanism from the recording mode. The sub-chassis 35 is returned to the stop position by performing the same actions as those performed when shifting to the stop 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 45 off.

Further, the recording lever 4 is returned to the flying operation position by the return force of the spring 53. Also, by shifting 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. 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 described 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 described above.
Therefore, the recording circuit REC does not operate.

In the second recording/playback mechanism, by pressing the record button lever 9 and locking the lever 9 and the playback button lever 10 to the second lock plate 16 at the same time, the cam gear 28 is activated 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 mechanisms at the same time so that the former is in the playback mode as described above and the latter is in the recording mode, a copying 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 connected 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 arrow C by the pin, a continuous regeneration mode is obtained by automatically switching from mechanism to mechanism. It is.

[Actions and effects of the present invention]

Since the present invention is constructed as described above, when driving two sets of recording and playback mechanisms continuously at a constant speed, simply setting both recording and playback mechanisms to the constant speed drive mode, When the constant speed drive of one recording and playback mechanism is finished, the other recording and playback mechanism can automatically enter the constant speed drive mode. This is an excellent invention that makes it possible to make a tape recorder extremely easy to use since it does not need to be set in any state.

[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, 5, 10: playback button lever, 9: recording button lever, 17: trigger arm, 25: rotating body, 25,
25b, 27, 30: Drive motor, 72: Power selection switch.

Claims (1)

[Claims] 1. An operating means for constant speed drive that can be locked in an operating position by a locking member, a rotating body that has a cam and is intermittently driven by the rotation of a drive motor; A locking member that locks to the rotating body to prevent its rotation and releases the lock when the operating means is operated to enable the rotation of the rotating body by the drive motor, and a mechanism is determined by the rotation of the cam. a first recording and reproducing mechanism that includes an operating member that operates to set the mechanism in a constant speed drive mode; an operating means that sets and maintains the mechanism in a constant speed drive mode; a drive motor; and a drive motor that operates by detecting the end of the tape. and when the second recording and reproducing mechanism including an auto-stop device that puts the mechanism in a stop mode and the operating means of both of the recording and reproducing mechanisms are operated, power is supplied to the driving motor of the second recording and reproducing mechanism. a switch means for connecting the drive motor of the first tape drive mechanism to the drive motor of the first tape drive mechanism in conjunction with the operation of the auto-stop device of the second recording/playback mechanism; By operating the operating means of the reproducing mechanism together, the second recording and reproducing mechanism is put into a constant speed drive mode, and the first recording and reproducing mechanism is locked in the operating position, and the rotating body is controlled by the locking member. A standby state is established in the constant speed drive mode in which the lock is simply released, and in this state, the auto-stop device of the second recording and reproducing mechanism is activated to put the second recording and reproducing mechanism in a stop mode. At the same time, by switching the switch means, the power source is connected to the drive motor of the first recording and reproducing mechanism, and the rotary body of the first recording and reproducing mechanism in the standby state is driven, and by the operation of the cam, the rotary body of the first recording and reproducing mechanism is driven. A tape recorder configured to set the first recording/reproducing mechanism to a constant speed drive mode via an operating member.