JP2534239B2 - Termination operation selection mechanism of double-type tape recorder - Google Patents

Description

Description: (a) Field of Industrial Application The present invention relates to a termination operation selection mechanism for a multiple tape recorder that mounts a plurality of cassette tapes in a single tape storage section.

(B) Prior Art Conventionally, as a double-sided tape recorder of this type, for example, as disclosed in Japanese Patent Laid-Open No. 61-240462, two cassette tapes are stored in one tape storage unit, and a common capstan is used. An editing mode in which the first and second pinch rollers are simultaneously or selectively pressed against each other via the first and second cassette tapes to reproduce the first cassette tape and record the second cassette tape. , First
It has been proposed that the continuous reproduction mode or the like in which the reproduction of the second cassette tape is performed after the reproduction of the second cassette tape is executed.

(C) Problems to be Solved by the Invention By the way, in the above-mentioned proposed multiple tape recorder, only one side reproduction operation can be performed on either side of the first and second cassette tapes. There is a problem that both the forward side and the reverse side cannot be continuously reproduced.

In order to solve such a problem, a reverse function is added to at least one of the first and second cassette tapes to continuously reproduce both sides of one cassette tape in a 1-cycle mode or continuous reproduction of both sides repeatedly. It is easy to think that the playback cycle mode can be performed, but in practical use, every time the tape end of the cassette tape is detected, it should be in the stop mode, or it should shift to the other cassette tape or the other surface. A termination operation selection mechanism that determines whether or not to switch is indispensable.

Therefore, an object of the present invention is to provide a termination operation selection mechanism suitable for practical use.

(D) Means for Solving the Problems The present invention has a structure in which the first cassette tape and the second cassette tape are stacked and stored in one storage portion, while the above cassette tapes are used for the forward running. At least one forward-side capstan that is shared, and first and second pinch roller means that can be individually and independently pressed against the forward-side capstan via the first and second cassette tapes; A reverse-side capstan used for running the second cassette tape on the reverse side, a third pinch roller means that is pressed against the reverse-side capstan via the second cassette tape, and the first and the first The first and second tape end detecting means for detecting the tape end of the second cassette tape, and the both cassette tapes are simultaneously driven. Edit mode, continuous playback mode in which the running of the first cassette tape is automatically switched to the running of the second cassette tape, continuous for repeatedly playing back both the forward side and the reverse side of the second cassette tape Cycle mode, a mode select lever that is selectively positioned by a slide operation at each mode position of a 1-cycle mode for continuously reproducing both the forward side and the reverse side of the second cassette tape, and the both tape end detection The first and second pinch roller means to the forward side capstan simultaneously or selectively based on the detection operation of the means and the mode position of the mode select lever, and the third pinch roller means to the reverse side capstan. Switching means for selectively making pressure contact with each other. Stage, the mode selector lever is a continuous cycle mode, 1
The first or second tape end is placed at a stop operation impossible position when in the cycle mode and continuous playback mode, at the stop operation possible position when in the edit mode position, and at the stop operation possible position when in the edit mode position. In response to the end detection operation of the detection means, the end selection means for switching the operating state to the stop mode, and when the mode selection lever is in the position of the continuous reproduction mode, the end detection operation of the first tape end detection means is involved. In response to the operation of the end select means, the mode select lever is slid from the continuous reproduction mode position to the 1 cycle mode position, and
When the mode select lever is in the position of the 1-cycle mode and the tape switching means for switching to the reproduction running on the forward side of the cassette tape, the operation of the end select means associated with the end detection operation of the second tape end detection means is performed. In response, first traveling direction switching means for switching from the reproduction traveling on the forward side of the second cassette tape to the reproduction traveling on the reverse side, and for displacing the end select means from the stop operable position to the stop operable position, When the mode select lever is in the continuous cycle mode, in response to the operation of the end select means accompanying the end detection operation of the second tape end detection means, the second traveling direction of the second cassette tape is switched. And a traveling direction switching means.

(E) Operation According to the above configuration, the switching control of the first to third pinch roller means is performed based on the slide position of the mode select lever and the end detection operation of the first or second tape end detection means. When the tape end of the cassette tape is detected, it is switched to the stop mode according to the set mode, or the reproduction traveling of the first cassette tape is switched to the reproduction traveling of the second cassette tape, or the cassette is reproduced. The tape can be automatically switched between the forward and reverse sides.

Therefore, it is possible to provide a multiple tape recorder capable of executing the 1-cycle mode and the continuous cycle mode in addition to the edit mode and the continuous reproduction mode.

(F) Examples The present invention will be described in detail based on the examples shown in the drawings. The present invention is not limited to this.

FIG. 1 shows the arrangement when the cassette tape is mounted in this embodiment. Multiple, eg two cassette tapes 1, 2
The capstan 3 for FOR traveling, the capstan 4 for REV traveling, and the reel stand (not shown) so as to be coaxial with each other, and at a position facing the magnetic tape surface of the cassette tape 1. The magnetic head 5 and the pinch rollers 6 are arranged, and the magnetic head 7 and the two pinch rollers 8 and 9 are arranged at positions facing the magnetic tape surface of the cassette tape 2. The two magnetic heads 5 and 7 are attached to the same reference stand 10, and the pinch rollers 6, 8 and 9 are structured so that they can operate independently.

FIG. 2 shows an example of operation button arrangement.
In this embodiment, for two cassette tapes, one is for playback only for FOR (PLAY), fast forward (FF), rewind (R).
EW) and stop / ejection (STOP / EJECT) functions. The other has FOR and REV bidirectional playback (PLAY) and recording (RE).
C), fast forward (FF), rewind (REW), stop / take out (ST
It has the functions of OP / EJECT) and pause (PAUSE). In the following description, the FOR-only player located above the two cassette tapes will be abbreviated as T _1, and the FOR and REV recording and player located at the lower side will be abbreviated as T _2. .

The tape recorder according to the present embodiment has a continuous playback mode in which the playback of FOR and REV of T ₂ is continuously performed after the playback of T ₁ is completed.
Four modes can be selected: 1 cycle mode in ₂ and continuous cycle mode, and edit mode in which playback is performed at T ₁ and recording is performed at T ₂ at the same time. Furthermore, in edit mode, operating both PLAY and REC buttons causes T ₁ and T ₂
And have the function of playing only T ₁ by operating the PLAY button only.

FIGS. 3 (a) and 3 (b) show the end detection sensor portion of the cassette tape.

The tape end detecting means for detecting the tape end of the cassette tape 1 is configured as follows.

The shaft 12 fixed to the take-up reel cap 11 for mounting the cassette tape ₁ on the T ₁ side is the main chassis.
A receiving plate 14 is rotatably inserted in a hollow shaft 13a formed in 13 and a receiving plate 14 is fixed to a portion projecting to the back side of the main chassis 13. Further, the end detection sensor 15 having a pushing protrusion 15a is attached to the shaft 12 below the receiving plate 14. This end detection sensor 15 is connected to the receiving plate 14 by the urging force of a spring 16 mounted on the shaft.
The rotation of the take-up reel cap 11 is pressed by the stop plate 17 attached to the 12, and the end detection sensor 15 is transmitted. When the take-up reel cap 11 is rotating, that is, when T ₁ is operating, the pushing protrusion 15a of the end detection sensor 15
Is pressing an abutting surface 19a of a sensor lever 19 rotatably attached to a shaft 18a fixed to the back chassis 18, and is L-shaped sliding toward the back chassis 18 protruding from the sensor lever 19. The protrusion 19b is on the back chassis 18
It is slid on the peripheral surface of an eccentric rocking cam 20a formed coaxially with the end cam 20 held rotatably. The end cam 20 rotates in the direction indicated by the arrow F.
In addition to the oscillating cam 20a, the oscillating cam 20 has an outer surface 20b when the sensor lever 19 located outside thereof is rotated in the arrow E direction.
Thus, an arc-shaped cam 20c capable of sliding contact with the sliding protrusion 19b is formed.

When the rotation of the take-up reel cap 11 is stopped at the end of the cassette tape during the operation of T ₁ , the rotation of the end detection sensor 15 is also stopped accordingly, and the pushing protrusion 15a of the end detection sensor 15 causes the sensor lever 19 to move. Stop pressing. The sliding projection 19b of the sensor lever 19 slides on the outer surface 20b of the rear cam 20c after being pressed by the end cam 20 rotating in the arrow F direction to the maximum diameter portion of the sliding cam 20a, and the sensor lever 19
Is rotated in the direction of arrow E using the shaft 18a as a fulcrum. The sensor lever 19 presses a pin of an end select lever (not shown) that abuts on the arm portion 19c to stop the operating state of T ₁ as described later.

Further, the tape end detecting means for detecting the tape end of the cassette tape 2 is configured as follows.

On the other hand, a take-up reel stand 21 for mounting the cassette tape 2 on the T ₂ side is inserted through the outer periphery of the hollow shaft 13a formed in the main chassis 13. The take-up reel stand 21 is provided with a gear 22 held by the main chassis 13 at a position where it meshes with a gear 21a provided on the lower end surface thereof. The support shaft 23 of the gear 22 protruding from the gear 22 to the back side of the main chassis 13 has a receiving plate 24 and a pushing protrusion as in the case of the shaft 12 fixed to the take-up reel cap 11.
An auto stop sensor 25 having 25a is attached. The auto stop sensor 25 is pressed against the stop plate 27 attached to the support shaft 23 by the urging force of the spring 26 mounted between the auto stop sensor 25 and the receiving plate 24 so that the rotation of the take-up reel stand 21 is transmitted to the auto stop sensor 25. It has become. When the take-up reel base 21 rotates, that is, when T ₂ operates, the pushing protrusion 25a of the auto stop sensor 25 has a contact surface 28a of a sensor lever 28b rotatably attached to a shaft 18b fixed to the back chassis 18. The sliding protrusion 28b, which is pressed against and is directed toward the L-shaped back chassis 18 protruding from the sensor lever 28, slides on the peripheral surface of the swing cam 20a integral with the end cam 20.

When the rotation of the take-up reel base 21 stops at the end of the cassette tape during the operation of T ₂ , the rotation of the gear 22 also stops accordingly and the pushing protrusion 25 of the auto stop sensor 25
a does not press the sensor lever 28. The sensor lever 28 rotates in the direction of arrow E about the shaft 18b as a fulcrum as in the case of the T ₁ side, and presses the pin of the end select lever (not shown) that is in contact with the arm 28c to stop the operating state of T _2. Let
As described above, in the tape recorder of this embodiment, the two sensor levers 19 and 28 that operate by transmitting the rotations of the reel cap 11 on the T ₁ side and the reel base 21 on the T ₂ side are
Sliding on the swinging cam 20a of the same end cam 20, the sensor levers 19 and 28 are rotated at the end of the cassette tape to press the end select lever to stop or switch the operation of T ₁ and T _2. Has become. In the tape recorder of this embodiment, the take-up reel cap 11
When the rotation of the take-up reel base 21 stops, the operation of the end detection mechanism starts.However, the end detection operation that causes a malfunction at the time of stop, PAUSE, T ₁ only operation, T ₂ only operation, etc. To prevent this, a blocking mechanism that operates according to each mode is provided. This blocking mechanism will be described later.

FIG. 4 to FIG. 9 show the mechanical structure of the tape recorder in this embodiment. In FIG. 4 showing the state in the edit mode, the mode select lever 30 disposed on the side of the sensor lever 28 has a U-shaped continuous L-shape and is provided in the U-shaped portion. Long hole 30a
It is slidable in the directions of arrows C and D in the figure by a pin 30b engaging with. A positioning pin 30c protruding toward the mode setting plate 31 having a plurality of V-shaped recesses is formed on the U-shaped portion of the mode select lever 30. In edit mode when the positioning pin 30c is engaged with the recess 31a of the mode setting plate 31, the continuous cycle mode in T ₂ when engaged in the recess 31b, the 1-cycle mode in the T ₂ when engaged in the recess 31c, Then, when the concave portion 31d is engaged, the continuous reproduction mode is set.

A pin 30d is projected downward from the upper end of the U-shaped portion of the mode select lever 30. This pin 30d
When the positioning pin 30c selects the edit mode, it pushes the inclined surface 32a formed on one side surface of the end select lever 32 constituting the end select means, and moves the end select lever 32 around the shaft 32f in the E direction. Rotate, convex 3
2b is moved to a position (stop operable position) where it engages with a pin 33a formed on the clock plate release lever 33. The pin 32c formed on the end select lever 32 as the sensor levers 19, 28 on the T ₁ or T ₂ side rotate in the E direction about the shaft 18a or the shaft 18b as the fulcrum by the end cam 20 during the winding end time of the tape. Alternatively, the pin 32d is pressed to slide the end select lever 32 in the D direction. End select lever
The convex portion 32b of 32 slides the lock plate release lever 33 in the D direction to release the lock plate 59 and bring it into a stopped state as described later.

On the other hand, as shown in FIG. 5, the pin of the mode select lever 30 is selected when the continuous cycle mode is selected at T ₂ where the positioning pin 30c engages with the recess 31b of the mode setting plate 31.
30d does not press the inclined surface 32a of the end select lever 32. Therefore, the end select lever 32 is in a position where the convex portion 32b cannot engage with the lock plate release lever 33 (stop operation impossible position), and when the end select lever 32 is slid in the D direction at the end of winding the tape, The portion 32b does not slide the lock plate release lever 33, and the pin 32e formed on the end select lever 32 is the arm portion 34a of the trigger lever 34.
Press. By this pressing, the trigger lever 34 is
It is rotated in the E direction with 34b as a fulcrum and logic cam gear 3
Since the engagement with the protruding portion 35a formed in 5 is released, the logic cam gear 35 having the toothless portion 35b is rotated in the E direction. Logic cam gear 35 has two cams on one side.
36 and 37 are integrally formed, and a turning spring (not shown) gives a rotational force in the direction E in the figure. Normally, the toothless portion 35b is rotated by a rotary drive source.
It is locked so that it will come to the position corresponding to.

In the mode select lever 30, the build-up portion 30e formed in the shaded portion in the figure abuts the cam 37 integrated with the logic cam gear 35 when the continuous cycle mode is selected, and the logic cam gear 35 has a tape winding end time. Cam 37 with rotation
Is pressed by. Then, the positioning pin 30c of the mode select lever 30 slides from the recessed portions 31d of the mode setting plate 31 to 31c to switch to the one cycle mode at T ₂ . The trapezoidal projection 30f formed on the side wall of the mode select lever 30 has a pin 39a formed on the program interlocking lever 39 configured to be slidable in the directions of arrows A and B contacted by the biasing force of the spring 40. It is touched.
The program interlocking lever 39 has an arm portion 39b extending toward the logic cam gear 35, and a pin 39c protruding toward the logic cam gear 35 is formed at the tip of the arm portion 39b.

When the logic cam gear 35 rotates at the end of tape winding in T ₂ mode, pin 39c of the program interlocking lever 39
Is pressed against the inner side surface 36a of the cam 36 integrated with the logic cam gear 35, and the program interlocking lever 39 is slid in the B direction. On the other hand, at the end of tape winding in the continuous cycle mode, the pin 39a of the program interlocking lever 39 contacts the inclined surface 30g of the mode select lever 30, and the pin 39c of the program interlocking lever 39 slides in the A direction from that in the T ₂ mode. Therefore, when the logic cam gear 35 rotates, the pin 39
c passes through the outside of the cam 36, and the program interlocking lever 39 does not slide. At the end of tape winding in the T ₂ mode, the pin 39d formed at the left end of the program interlocking lever 39 that is slid in the B direction presses the arm portion 41a of the inverted L-shaped cam lock lever 41, so that the cam lock lever 41 is It is rotated in the F direction with the shaft 41b as a fulcrum, and the engagement with the projection 42a formed on the program switching cam gear 42 is released.

The program switching cam gear 42 is given a rotational force in the F direction by a starting spring (not shown), and meshes with a gear 43 rotated by a rotary drive source to rotate in the F direction. Therefore, the cam lock lever 41 engages with the protrusion 42b of the program switching cam gear 42, and the toothless portion 42c of the program switching gear 42 moves to a position corresponding to the gear 43, so that the program switching gear 42 is stopped from rotating. It The pin 41c of the cam lock lever 41 is engaged in the long hole 44a formed in the program lever 44, and the program lever 4
By pressing 4 in the D direction, the program switching cam gear 42 can be rotated. Reference numeral 45 is a program switching cam integrally formed with the program switching cam gear 42. The switching cam 45 has an elongated hole 46b and a pin 46c engaging with the elongated hole 46b.
The movement of the program switching lever 46 is restricted by, and the arm 47a of the program switching lever 46, which is movable in the A and B directions, is abutted by the spring 47.

The shaft 46d formed on the program switching lever 46 has an RVS
A lever 48 is rotatably attached. The movement of the RVS lever 48 is restricted by a pin 30h formed on the mode select lever 30 that engages with a long hole 48a provided therein. A program interlocking lever 49 slidable in the A and B directions is attached to a pin 46e formed on the arm portion 46h of the program switching lever 46, and is biased in the A direction by a spring 50. Further, the switching levers 51, 52 are rotatably attached to the shafts 46f, 46g formed on the program switching lever 46, and the long holes (not shown) provided in the arm portions 51a, 52b are The switching levers 51, 52 are restricted in their movements by being engaged with the engagement pin 49a formed on the program interlocking lever 49.

When the positioning pin 30c of the mode select lever 30 is slid from the T ₂ mode to the continuous playback mode, the pin 30i formed on the mode select lever 30 presses the arm portion 52b of the switching lever 52, and the positioning pin 30c is also moved. When sliding from the T ₂ mode to the edit mode, the pin 30j formed on the mode select lever 30 presses the arm portion 51b of the switching lever 51, so that the switching levers 51 and 52 are respectively rotated by the shaft 45.
It is rotated around f and 45g as a fulcrum, and the program interlocking lever 49
Is slid in the B direction. FIG. 10 to FIG. 16 show the switching mechanism of the sensor killer and the pinch roller of the tape recorder in this embodiment.

FIG. 10 shows the stopped state in the edit mode. Program lever 44, REC lever 53 having pin 53a, PLAY lever 54 having pin 54a, REW lever 55, 56a having pin 55a
An FF lever 56 having a pin, a STOP lever 57 having a pin 57a, and a PAUSE lever 58 are slidably attached in the C and D directions in the figure, respectively, and are biased in the C direction by a spring (not shown). ing. Reference numeral 59 is a lock plate slidably mounted in the A and B directions. The lock plate 59 is biased in the B direction by a spring (not shown), and the lock plate 59 corresponding to each of the pins 53a to 56a. Convex parts 59a to 59d are formed at the respective positions of the
Lock ~ 56.

Further, a pin 57a formed on the STOP lever 57 is projected at a position corresponding to the inclined surface 59e formed on the lock plate 59, and when the STOP lever 57 is pressed in the D direction, the levers 53- 56 is disengaged. In addition, the lock plate 59
The lock plate release lever 3 at the position corresponding to the inclined surface 59f of
When the lock plate release lever 33 slides in the D direction at the end of the tape winding, the pin 33c pushes the inclined surface 59f, and the lock plate 59 causes each of the levers 53 to 53 to protrude. Cancel 56. At the tip of the PAUSE lever 58, there is a PAUSE movement lever 75 that rotates around the shaft 74a as a spindle.
Are abutted.

T ₁ side pinch roller lever 60, T ₂ side FOR pinch roller lever 61, T ₂ side REV pinch roller lever 62 are respectively attached rotatably to the shaft 63 to 65, the spring 66-68
And a pin (not shown). In addition, each pinch roller lever 60-62 has a capstan 69-
Springs 72 to 74 for being crimped to 71 are attached. The T ₂ side pinch roller levers 61, 62 are provided with respective arm portions 61b, 62b for blocking or PAUSE in the T ₁ mode.

The pinch roller levers 60 and 61 and the capstan 6
The numerals 9,70 are actually coaxial, which are indicated by different reference numerals for convenience of description of this embodiment.

The sub-chassis 76 is configured to be slidable in the C and D directions by a long hole 76b provided therein and a pin 76a engaged therewith, and is biased in the C direction by a spring 77.
The sub-chassis 76 has a pinch operation lever 78 on the shaft 76c.
Further, another pinch operation lever 79 is rotatably attached to another shaft 76d. Pinch lever 78,79
The contact pins 78a and 79a are formed on the pin, and are constantly urged by the springs 80 and 81 to the end faces 46h and 46i of the program switching lever 46. The pause back lever 82 configured to be slidable in the C and D directions is biased in the D direction by the spring 83, and is prevented from moving in the D direction by the pin 76c of the sub chassis 76. The pause back lever 82 includes arms 82a and 82b for unlocking the sensor killer 84 and 85, arms 82c and 82d for pushing down the pinch roller levers 61 and 62 at the time of the pause, and D direction. And a convex portion 82f when it is prevented from sliding. The sensor killer 84,85 is rotatably mounted around the shafts 84a, 85a as fulcrums, and the springs 86,87 are used to
The rotational force in the direction is urged to press the arm portions 28c and 28d at both ends of the T ₂ side sensor lever 28, respectively.

The mode select lever 30 has a trapezoidal convex portion 30k formed at a position facing the arm portion 60b of the T ₁ side pinch roller lever 60, and regulates the operation of the pinch roller lever 60 according to each mode. Further, the arm portions 301, 30m, 30n formed on the mode select lever 30 disengage the sensor killer 84, 85. Another sensor killer 88 is rotatably mounted around a shaft 88a as a fulcrum, and a spring 89 applies a rotational force in the E direction to the arm portion 30m of the mode select lever 30.
, But the arm 19c of the T ₁ side sensor lever 19
Is not pressed to. On the other hand, the arm 19 of the sensor lever 19
A sensor killer 90, which is rotatably mounted on a shaft 90a as a fulcrum and is given a rotational force in the E direction by a spring 91, is pressed to d.

A slide lever 92, which is slidable in the A and B directions, is in contact with one end side surface 30o of the mode select lever 30 by a spring (not shown). A blocking lever 93 is rotatably attached to a shaft 92a formed on the slide lever 92. The blocking lever 93 is given a rotational force in the F direction by a spring (not shown), but is locked by the contact pin 92b of the slide lever 92 to block the rotation in the F direction. A coupling lever 94 that is slidable in the A and B directions is attached to a position facing the arm portion 93a of the blocking lever 93, and a pin 94a formed on the coupling lever 94 is an inclination formed on the REC lever 53. It is in contact with the surface 53b. C, D at the tip of REW lever 55 and FF lever 56
F / R interlocking lever 95 that can slide in the direction is spring 96
Is urged in the C direction by. At the time of FF or REW, each pin 95a, 95b formed on the F / R interlocking lever 95 is D
The sensor killer 90 and 85 are slid in the respective directions and pressed.

Next, the operating state of this embodiment will be described for each mode with reference to the drawings.

(1) In edit mode In the tape recorder according to the embodiment of the present invention, two operation states can be selected after the edit mode is selected.
That the reproduction state of the T ₁ side only, are two of the so-called dubbing state recorded in and reproduced by T ₁ side T ₂ side. First, the case of selecting the reproduction state only on the T ₁ side will be described.

1-1) FIG. 11 shows the T ₁ reproduction state in the edit mode. Stop time (Fig. 10) to PLAY lever 54
When only one is pressed in the D direction, the sub chassis 76 is pressed in the same direction. At this time, the pin formed on the PLAY lever 54
54a is locked to the convex portion 59b of the lock plate 59, and the operating state is maintained. At the same time, the pinch operation levers 78 and 79 attached to the sub chassis 76 are also slid in the D direction. The pinch operation lever 78 abuts against and presses the spring 72 attached to the T ₁ side pinch roller lever 60, whereby the pinch roller lever 60 is rotated in the F direction with the shaft 63 as a fulcrum. The arm portion 60b of the pinch roller lever 60 rotates without being restricted by the convex portion 30k of the mode select lever 30, and the roller portion 60a is pressed against the capstan 69. On the other hand, in the pause back lever 82 that is slid in the D direction by the spring 83 as the sub chassis 76 slides in the D direction, the convex portion 82f abuts the blocking lever 93 and the sliding is stopped. Therefore, the arm portion 61b of the pinch roller lever 61 on the T ₂ side of the T ₂ side pinch roller lever 61, which is pressed by the pinch operation lever 78 and rotated about the shaft 64 in the F direction, contacts the arm portion 82c of the pause back lever 82. As a result, the rotation is restricted, and the roller portion 61a is not pressed against the capstan 70. In the REV side pinch roller lever 62, the pinch operation lever 79 comes into contact with the spring 74 but does not press the spring 74, so that the roller portion 62a is not pressed against the capstan 71.
Similarly, a play idler, a circuit, or the like (not shown) operates, and only the T ₁ side is in the reproduction state.

Next, the auto stop sensor in this state will be described.

Killer of tape recorder end detection sensor is T ₁
There are two sensor killer 88 and 90 on the side sensor lever 19 and sensor killer 84 and 85 on the T ₂ sensor lever 28.
The two of the above work respectively.

First, the sensor killer 88 is pressed by the arm portion 30m of the mode select lever 30, and the pressing of the T ₁ side sensor lever 19 by the arm portion 19c is released. Also sensor killer 9
0 is also pressed by the tip portion 76g of the sub chassis 76 during operation, and the pressing of the sensor lever 19 by the arm portion 19c is released. In addition, the sensor killer 90 is also pressed by the tip portion 76g of the sub chassis 76 during operation, and the arm portion 1 of the sensor lever 19 is
The pressure on 9d is released. Therefore, at the end of the tape winding, the sliding protrusion 19b of the sensor lever 19 is pressed to the maximum diameter portion of the swing cam 20a and then temporarily stopped as the winding reel cap and reel base stop rotating. 20c exterior 2
Slide 0b to start the end detection operation. On the other hand, the sensor killer 84 is attached to the arm 28c of the T ₂ side sensor lever 28,
The sensor killer 85 is pressed against 8d, and the sliding protrusion 28b of the sensor lever 28 is always provided around the swing cam 20a. For this reason, even if the take-up reel unit stops rotating, the same sliding as that during operation is performed, and the end detection operation is not performed.

 Next, the selection of the dubbing state will be described.

1-2) FIG. 12 shows a dubbing state in the edit mode. PLAY lever 54 from the stopped state (Fig. 10)
And REC lever 53 in the D direction. Sub chassis 76
Is slid in the D direction as described above, and the roller portion 60a of the T ₁ side pinch roller lever 60 is pressed against the capstan 69.
On the other hand, as the REC lever 53 is pressed, the pin 94a of the connecting lever 94 that was in contact with the inclined surface 53b is pressed, and the connecting lever 9 is pressed.
4 is slid in the B direction to press the arm portion 93a of the blocking lever 93. The blocking lever 93 is rotated in the E direction with the shaft 92b as a fulcrum. As the sub chassis 76 slides in the D direction,
The pause back lever 82 that is slid in the D direction by the spring 83 slides without the convex portion 82f being engaged with the blocking lever 93, and is locked to the pin 76c of the sub chassis 76. The T ₂ side pinch roller lever 61 is rotated in the F direction without the arm portion 61b contacting the arm portion 82c of the pause back lever 82, and the roller portion 61a is pressure-bonded to the capstan 70. However, the pinch roller lever 62 is
Although 79 abuts on the spring 74 but does not press it, the roller portion 62a is not pressed against the capstan 71. Similarly, a play idler circuit (not shown) operates, so T ₁
Playback with and simultaneously record with T ₂ .

Next, the killer of the end detection sensor in this state will be described.

The sensor killer 90 is pressed by the tip portion 76g when the sub chassis 76 slides, and the pressing of the sensor lever 19 on the arm portion 19d is released. As the bose back lever 82 slides in the D direction, the sensor killer 84 is pressed against the arm portion 82a of the pause back lever 82, and the sensor killer 85 is pressed against the arm portion 82b, to the arm portions 28c and 28d of the sensor lever 28. Is released. The sensor killer 88 also has four sensor killer 84,85,8 because the sensor lever 29 is released from pressing the arm portion 19c when the edit mode is selected.
For all 8, 90, the pressure on the sensor levers 19, 28 has been released. Therefore, the winding of the tape ends _first on the T ₁ side or the T ₂ side, and the end detection operation is started when the rotation of the take-up reel cap or the reel base is stopped.

FIG. 4 shows the mechanical structure in the edit mode. As described above, when the tape is wound and the sensor lever 19 or the sensor lever 28 rotates in the E direction about the shafts 18a and 18b as fulcrums, the pin 32c or 32d formed on the end select lever 32 is removed. Press and slide the end select lever 32 in the D direction. Therefore, the convex portion 32b of the end select lever 32 moves the lock plate release lever 33 to D
Slide in the direction. Along with this, the pin 33c of the lock plate release lever 33 presses the inclined surface 59f of the lock plate 59 to slide the lock plate 59 in the A direction, so that the PLAY lever 54
The pin 54a of the REC lever 53 and the pin 53a of the REC lever 53 are released from the engagement with the lock plate 59 and are brought into a stopped state (see FIG. 12).

Next, the killer of the sensor in the paused state will be described. The pause in the tape recorder according to the embodiment of the present invention works only on the T ₂ side. First, in the pause operation, in the operation state shown in FIG. 12, the PAUSE lever 5
Press 8 in the D direction. Since the PAUSE lever 58 pushes the arm portion 75b of the PAUSE operation lever 75, the PAUSE operation lever 75 is an axis.
The end surface 82c of the pause back lever 82, which is rotated in the E direction about the fulcrum 75a and is in contact with the arm portion 75c, is pressed to slide the pause back lever 82 in the C direction. The arm portion 82c of the pause back lever 82 presses the arm portion 61b of the T ₂ side pinch roller lever 61 to release the pressure contact between the roller portion 61a and the capstan 70. Also, since the play idler (not shown) is also released from the pressure contact, only the operation of T ₁ is performed. Further, since the arms 82a and 82b of the pose back lever 82 are released from being pressed against the sensor killers 84 and 85, the respective sensor killers 84 and 85 are rotated by the springs 86 and 87, and the T ₂ side sensor lever 28
It is pressed by the arm portions 28c, 28d. Therefore, the state becomes the same as in the T ₁ playback state, and the T ₂ side sensor lever 28 is killed.

Next, the killer of the sensor during FF or REW will be described. In the tape recorder according to the embodiment of the present invention, FF or REW operates on the T ₁ side when the edit mode is selected. When the FF lever 56 or the REW lever 55 is pressed in the D direction from the stopped state shown in FIG. 10, the F / R interlocking lever 95 is slid in the D direction. F / R interlocking lever 95
Pins 95a and 95b press the sensor killer 90, 85, and the pressing of the sensor lever 29, 28 is released. However, since the sensor killer 84 is pressed against the arm 28c of the T ₂ side sensor lever 28, the sensor lever 28 is killer. On the other hand, the sensor killer 88 is released from pressing the sensor lever 19 when the mode is selected, so when the tape is at the end of FF or REW and the take-up reel cap and reel base stop rotating, the end is the same as during playback. The detection operation will start.

(2) Figure 13 during successive cycles mode in T ₂ are shows FOR operating state of the successive cycles mode in the T _2. The positioning pin 30c of the mode select lever 30 is engaged with the recess 31b of the mode setting plate 31. When the PLAY lever 54 is pressed in the D direction from the stopped state, the sub chassis 76 is pressed in the same direction. The pin 54a formed on the PLAY lever 54 is locked to the convex portion 59b of the lock plate 59 and the operating state is maintained. At the same time, the pinch operation levers 78 and 79 attached to the sub chassis 76 also slide in the D direction. The pinch operation lever 78 abuts against and presses the spring 72 attached to the T ₁ side pinch roller lever 60, whereby the pinch roller lever 60 is rotated in the F direction with the shaft 63 as a fulcrum. However, the arm portion 60b of the pinch roller lever 60 comes into contact with the convex portion 30k of the mode select lever 30, and the rotation in the F direction is restricted, so that the roller portion 60a is capstan 69a.
Do not crimp on. On the other hand, when the continuous cycle mode is selected at T ₂ , the slide lever 92 is the recess of the mode select lever 30.
Since it comes into contact with 30p, it slides in the B direction as compared with the case of the edit mode. Further, since the blocking lever 93 also slides in the B direction as the select lever 30 slides, the pause back lever 82 slides in the D direction without the convex portion 82f being engaged with the blocking lever 93. The pinch operation lever 78 presses the spring 73, and the pinch roller lever 61 rotated in the F direction with the shaft 64 as a fulcrum is provided on the arm portion 61b.
Is rotated without contacting the arm portion 82c of the pose back lever 82, and the roller portion 61a is pressure-bonded to the capstan 70. However, the pinch roller level 62 is the pinch operation lever 79
Comes into contact with the spring 74, but is not pressed so that the roller portion 62a is not pressed against the capstan 71. Similarly, a play idler, circuit, etc. (not shown) operate and the FO on the T ₂ side
R is in operation.

Next, the switching operation from FOR to REW and the operating state of REW will be described. FIG. 5 shows the mechanical structure of the FOR state in the continuous cycle mode at T ₂ . When the tape is wound in this state, the end select lever 28 is rotated by the end cam 20 in the E direction with the shaft 18b as the fulcrum. The pin 32d formed on the sensor lever 32 is pressed in the D direction to slide the end select lever 32 in the same direction. At this time, the convex portion 32b of the end select lever 32 is not in the position to engage with the pin 33a of the lock plate release lever 33, and the lock plate release lever 33 is not operated. On the other hand, since the pin 32e formed on the end select lever 32 presses the arm portion 34a of the trigger lever 34, the trigger lever 34 is rotated in the E direction with the shaft 34b as a fulcrum, and the protrusion formed on the logic cam gear 35. The engagement with the portion 35a is released. The logic cam gear 35 is rotated in the E direction by a starting spring (not shown), meshes with the gear 38, and is rotated in the E direction together with the cam 36. The pin 39a of the program interlocking lever 39 contacts the convex portion 30f of the mode select lever 30, and the pin 39c of the program interlocking lever 39 is positioned so as to slide on the inner side 36a of the cam 36 when the logic cam gear 35 rotates. Therefore, as the logic cam gear 35 rotates, the pin 39c of the program interlocking lever 39 moves to the cam 36
The program interlocking lever 39 is slid in the B direction by being pressed by the inner side 36a. Therefore, the program interlocking lever
The pin 39d formed on the 39 is the arm 4 of the cam lock lever 41.
Since 1a is pressed, the cam lock lever 41 rotates about the shaft 41b in the F direction, and the engagement with the projection 42a formed on the program switching cam gear 42 is released. Therefore, the program switching cam gear 42 is rotated in the F direction by the starting spring (not shown) and meshes with the gear 43.
It is rotated in the F direction together with the program switching cam 45. Accordingly, the program switching lever 46, which is in contact with the program switching cam 45, is slid in the B direction by the spring 47. At this time, the RVS lever 48 attached to the program switching lever 46 does not push the pin 32f formed on the end select lever 32.

FIG. 14 shows the operating state of REV. When the program switching lever 46 slides in the B direction, the contact pin 79a of the pinch operation lever 79, which has been urged by the left inner end surface 46i of the program switching lever 46, is pressed in the same direction, and the shaft 76b is used as a fulcrum in the E direction. To be rotated. The pinch operation lever 79 presses the spring 74 attached to the pinch roller lever 62. The pinch roller lever 62 is rotated in the E direction with the shaft 65 as a fulcrum, and the roller portion 62a is pressed against the capstan 71. On the other hand, the pinch operation lever 78 is the program switching lever.
As the 46 slides in the B direction, the spring 80
The roller portion 61a is rotated about the 76c as a fulcrum in the E direction to release the pressure on the spring 73 attached to the pinch roller lever 61, so that the roller portion 61a is released from the pressure contact with the capstan 70. At the same time, a play idler, a circuit, etc., which are not shown, operate to enter the REV operating state.

FIG. 6 shows the mechanical structure in the REV state. At the end of the tape winding in this state, the end select lever 32 is slid in the D direction as described above, but the convex portion 32b does not operate the lock plate release lever 33. On the other hand, the pin 32e pushes the trigger lever 34 to rotate the logic cam gear 35. The pin 39c of the program interlocking lever 39 is inside 3 of the cam 36.
By sliding and pressing 6a, the program interlocking lever 39 is slid in the B direction, and the engagement between the cam lock lever 41 and the program switching cam gear 42 is released. Therefore, the program switching cam gear 42 is rotated in the F direction, so that the program switching lever 46 is pressed in the A direction. As the program lever 46 slides, the pinch operation levers 78 and 79 are rotated to crimp the roller portion 61a of the FOR side pinch roller lever 61 to the capstan 70 and the roller portion 62a of the REV side pinch roller lever 62 and the capstan 71. Then, the pressure is released and the FOR operation shown in FIG. 13 is switched to.

As described above, in the continuous cycle at T ₂ , FOR, REV
After the operation, the end lever 32 is slid by the rotation of the sensor lever 28, the logic cam gear 35 is rotated, the program switching cam gear 42 is rotated through the program interlocking lever 39, and the program switching lever 46 is slid. Then, by switching the pin operation levers 78 and 79, continuous reproduction of FOR and REV is performed.

Next, the killer of the end detection sensor in this mode will be described.

FIG. 13 shows the operating state in the continuous cycle mode at T ₂ . When this mode is set by the mode select lever 30, the sensor killer 84 is pressed by the arm 30n of the mode select lever 30 and is rotated in the F direction about the shaft 84a as a fulcrum. The pressure on is released. On the other hand, the sensor killer 88 does not press the arms 301 and 30m of the mode select lever 30, and the sensor lever 1
The arm portion 19c of 9 is pressed. During operation, the sensor killer 20 releases the pressure on the sensor levers 19, 28 by the tip portion 76g of the sub-chassis 76 and the sensor killer 85 by the arm portion 82b of the pause back lever 82. Therefore, the T ₁ side sensor lever 19 has been killed, and the T ₂ side sensor lever 28 has been released. Therefore, at the end of the tape winding, the sensor lever 28 is rotated along with the stop of the rotation of the take-up reel base, and the end select lever 32 is slid to start the switching operation. Next, the killer of the sensor in the pause state will be described.
Similarly to the above, the PAUSE lever 58 is pressed in the D direction, and the pause back lever 82 is slid in the C direction to establish the paused state.
Since the arm portion 82b of the pause back lever 82 is released from being pressed against the sensor killer 85, the sensor killer 85 is rotated by the spring 87 about the shaft 85a in the E direction, but the arm portion 28d of the sensor lever 28 is rotated. Is being pressed,
The switching operation is not started during the pause. Also, when operating in FF or REW, the sensor killer 90,85 is F /
The pressure on the sensor levers 19 and 28 is released by the R interlocking lever 95. Also, the sensor killer 84 is a sensor lever
The pressing of the arm 28c of 28 is released, and the sensor killer 88 is pressed by the arm 19c of the sensor lever 19. Hence T
_{The 1} side sensor lever 19 has been killed, and the T ₂ side sensor lever 28 has been released. Therefore, at the end of winding the FF or REW tape, the sensor lever 28 rotates as the rotation of the winding rail base stops, and the end select lever 32 slides in the D direction. Although not shown, when the FF or REW lever is pressed in the T ₂ mode, the end select lever 32 is pressed in the E direction and the convex portion 32b is rotated to a position facing the pin 33a of the lock plate release lever 33. End select lever 32
When sliding, the lock plate release lever 33 is slid to be in a stopped state.

(3) Figure 15 during one cycle mode in T ₂ are shows FOR operating state of the one-cycle mode in the T _2. The positioning pin 30c of the mode select lever 30 is engaged with the recess 31c of the mode setting plate 31. When the PLAY lever 54 is pressed in the D direction from the stopped state, the sub chassis 76 is pressed in the same direction. Pinch movement lever 7 at the same time
8, 79 is also slid in the D direction, and the pinch operation lever 78 is T ₁
Spring 72 attached to side pinch roller lever 60
Is pressed to rotate the pinch roller lever 60 in the F direction. However, the arm portion 60b of the pinch roller lever 60 comes into contact with the convex portion 30k of the mode select lever 30 and the rotation in the F direction is restricted, so that the roller portion 60a is not pressed against the capstan 60. On the other hand, when the 1-cycle mode is selected in T ₂ , the slide lever 92 contacts the recess 30p of the mode select lever 30, so that the slide lever 92 is slid in the B direction as in the continuous cycle mode in T ₂ . Since the blocking lever 93 is also slid in the B direction, the pause back lever 82 is
f is slid in the D direction without being engaged with the blocking lever 93. When the spring 73 is pressed by the pinch operation lever 78 and the pinch roller lever 61 rotated in the F direction is
The arm portion 61b rotates without contacting the arm portion 82c of the pause back lever 82, and the roller portion 61a is pressure-bonded to the capstan 70. However, the pinch roller lever 62 is a pinch operation lever.
Although 79 abuts on the spring 74 but does not press it, the roller portion 62a is not pressed against the capstan 71. Similarly, a play idler, a circuit, and the like (not shown) operate to enter the FOR operation state on the T ₂ side.

Next, the switching operation from FOR to REV and the operating state of REV will be described. FIG. 7 shows the mechanical structure of the FOR state in the one cycle mode at T ₂ . When the tape winding is completed in this state, the end select lever 32 is slid in the D direction to press the trigger lever 34 and the logic cam gear 35, as in the continuous cycle mode at T ₂ .
To rotate. The pin 39c of the program interlocking lever 39 slides on the inner side 36a of the cam 36 and is slid in the B direction to press the cam lock lever 41. Therefore, the program switching cam gear 42 is rotated in the F direction, and the program switching lever 46 is slid in the B direction. At this time, the RVS lever 48 attached to the program switching lever 46 and positioned by the pin 30h of the mode select lever 30 is also slid in the B direction and abuts against the pin 32f formed on the end select lever 32 facing in the sliding direction, The convex portion 32b of the end select lever 32 is pressed to a position where it engages with the pin 33a of the lock plate release lever 33. As in the continuous cycle mode at T ₂ , the pinch operation levers 78 and 79 rotate as the program switching lever 46 slides, and the FOR side pinch roller lever 61
The roller portion 61a is released from the capstan 70 and the roller portion 62a of the REV side pinch roller lever 62 is pressure-bonded to the capstan 71. Play idler and circuits, etc. also switched, the T ₂ side REV operation state.

FIG. 8 shows the mechanical structure in the REV state. At the end of the tape winding in this state, the end select lever 32 is slid in the D direction as described above. Therefore, the convex portion 32b formed on the end select lever 32 presses the pin 33a of the lock plate release lever 33 to cause the lock plate release lever 3 to move.
It slides in the direction D of 3 to release the engagement between the lock plate 59 and the PLAY lever 54 and stop the operation.

As described above, in the one cycle mode at T _2, when switching from FOR to REV, the RVS lever 48 attached to the program switching lever 46 presses the end select lever 32, and after REV operation, the end select lever 32 slides. Along with this, the lock plate release lever 33 slides into a stopped state.

Next, the killer of the end detection sensor in this mode will be described.

FIG. 15 shows the operating state in the 1-cycle mode at T ₂ . When this mode is set with the mode select lever 30, the sensor killer 84 is pressed by the arm 30n of the mode select lever 30 and the pressing of the sensor lever 28 on the arm 28c is released, as in the continuous cycle mode at T ₂ . Has been done. On the other hand, the sensor killer 88 is not pressed by the arms 301 and 30m of the mode select lever 30,
It is pressed by the arm portion 19c of the sensor lever 19. Also during operation, the sensor killer 90, 85 is released from pressing the sensor levers 19, 28, respectively, as described above. Hence T ₁
Side sensor lever 19 is killer, T ₂ side sensor lever
Since the killer of 28 is released, the sensor lever 28 is rotated and the switching operation is started at the end of the tape winding. Further, the killer of the sensor in the pause state, FF or REW state is the same as that in the continuous cycle mode in T ₂ described above, and thus the description thereof will be omitted.

(4) In continuous playback mode FIG. 16 shows the operating state in continuous playback mode.
The positioning pin 30c of the mode select lever 30 is engaged with the recess 31d of the mode setting plate 31. Also slide lever 9
2 is in contact with the end surface 30o of the mode select lever 30. When the PLAY lever 54 is pressed in the D direction from the stopped state,
The sub chassis 76 is slid in the same direction. The pinch operation lever 78 presses the spring 72 attached to the T ₁ side pinch roller lever 60 to rotate the pinch roller lever 60 in the F direction. The arm portion 60b of the pinch roller lever 60 is rotated without being restricted by the convex portion 30k of the mode select lever 30, and the roller portion 60a is pressed against the capstan 69. On the other hand, as the sub chassis 76 slides, the spring
Pause back lever 82 slid in D direction by 83
The projection 82f comes into contact with the blocking lever 93 to stop the sliding. Therefore, the pinch action lever 78
The rotation of the T ₂ side pinch roller lever 61 pressed against 73 and rotated in the F direction is restricted by the arm 61b coming into contact with the arm 82c of the pause back lever 82, and the roller 61a is crimped to the capstan 70. do not do. In the REV side pinch roller lever 62, the pinch operation lever 79 comes into contact with the spring 74 but does not press it, so that the roller portion 62a is not pressed against the capstan 71. At the same time, a play idler, a circuit, etc., which are not shown, operate, and the reproduction state on the T ₁ side is set.

Next, the switching operation from T ₁ to T ₂ will be described. FIG. 9 shows the mechanical structure in the continuous reproduction mode. At the end of the tape winding in this state, the end select lever 32 slides in the D direction as described above, but the convex portion 32b does not press the pin 33a of the lock plate release lever 33. Meanwhile pin 32e
Pushes the trigger lever 34 to rotate the logic cam gear 35. Cam 37 formed on logic cam gear 35
Is, the meat up section 30e of the mode selector lever 30, 1 of T ₂
Press to the position opposite to the cycle mode. That is, the positioning pin 30c of the mode select lever 30 is slid from the convex portion 31d of the mode setting plate 31 to the convex portion 31c. As described above, the convex portion 30k of the slid mode select lever 30 is the arm portion 6 of the T ₁ side pinch roller lever 60.
0b is pressed to release the pressure contact between the roller portion 60a and the capstan 69. On the other hand, the slide lever 92 is the mode select lever.
By contacting the convex portion 30p of the 30, the engagement between the blocking lever 93 and the convex portion 82f of the pause back lever 82 is released.
Therefore, the arm portion 61b of the T ₂ side pinch roller lever 61 is not regulated by the arm portion 82c of the pause back lever 82 and rotates in the F direction, so that the roller portion 61a is pressed onto the capstan 70. When the logic cam gear 35 rotates, the pin 39c of the program interlocking lever 39 passes outside the cam 36,
The program interlocking lever 39 does not slide. In addition, a play idler, circuit, etc., not shown operate, and
It becomes the 1-cycle mode FOR state at T ₂ in Fig. 15). After that, at the end of FOR tape winding, switch to REV and REW
It will be stopped at the end of the volume.

Next, the killer of the end detection sensor in this mode will be described.

FIG. 16 shows an operation state in the continuous reproduction mode. When this mode is set with the mode select lever 30, the sensor killer 88 is the arm of the mode select lever 30.
It is pressed by 301 and the pressing of the sensor lever 19 on the arm portion 19c is released. Further, the sensor killer 90 is also pressed by the tip portion 76g of the sub chassis 76 during operation, and the pressing of the sensor lever 29 on the arm portion 19d is released. Therefore, at the end of the tape winding, the switching operation is started with the rotation of the take-up reel cap and the reel base stopped. Meanwhile, the sensor lever 28
Since the sensor killer 84 is pressed against the arm 28c of the device and the sensor killer 85 is pressed against the arm 28d, the same sliding as during operation is given regardless of the rotation of the take-up reel base. No switching operation is performed.

Next, the killer of the sensor at the time of FF or REW will be described. In the tape recorder according to the embodiment of the present invention, FF or REW operates on the T ₁ side when the continuous reproduction mode is selected. FF lever 56 or RE from the stopped state
When the W lever 55 is pressed in the D direction, the F / R interlocking lever 95 is slid in the same direction, and the pins 95a and 95b press the sensor killer 90 and 85, respectively, and release the pressing to the sensor levers 19 and 28. . However, the arm of the sensor lever 28 on the T ₂ side
Since the sensor killer 84 is pressed against 28c, the sensor lever 28 is killed. Meanwhile sensor killer
88 is released from pressing the sensor lever 19 when the mode is selected. When pressing the FF lever 56 or REW lever 55, press the end select lever 32 in the E direction,
Since the convex portion 32d is rotated to a position facing the pin 33a of the lock plate release lever 33, when the end select lever 32 slides at the end of FF or REW winding, the lock plate release lever 33 slides and stops. It becomes a state.

(G) Effect of the Invention According to the present invention, switching control of the first to third pinch roller means is performed based on the slide position of the mode select lever and the end detection operation of the first or second tape end detection means. Thus, when the tape end of the cassette tape is detected, it is switched to the stop mode according to the set mode, or the reproduction traveling of the first cassette tape is switched to the reproduction traveling of the second cassette tape, or It is possible to provide a dual tape recorder which can automatically perform switching between the forward side and the reverse side of a cassette tape and can execute the 1 cycle mode and the continuous cycle mode in addition to the edit mode and the continuous reproduction mode.

Moreover, after the reproduction of the first cassette tape is completed in the continuous reproduction mode, the mode select lever is slid from the position of the continuous reproduction mode to the position of the one cycle mode when shifting to the reproduction on the forward side of the second cassette tape. Thus, the control mode in the 1-cycle mode can be used thereafter, and the configuration can be simplified.

[Brief description of drawings]

1 to 16 are views showing an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of an essential part showing an arrangement when a cassette tape is mounted, and FIG. 2 is a front view showing an operation button part. FIGS. 3 (a) and 3 (b) are a longitudinal sectional view showing an auto stop sensor section and a plan view of a main part, FIGS. 4 to 9 show a mechanical structure, and FIG. 4 is an edit mode. When, Fig. 5 shows T ₂
FOR state in continuous cycle mode in Fig. 6, T ₂
REV state in continuous cycle mode in Fig. 7, T ₂
Fig. 8 shows the FOR state in the 1-cycle mode, Fig. 8 shows the REV state in the 1-cycle mode at T ₂ , Fig. 9 shows the continuous playback mode, and Figs. 10 to 16 show the switching mechanism of the sensor killer and the pinch roller. Shown, 10th
Figure shows the stopped state in edit mode, Figure 11 shows T ₁ playback state in edit mode, Figure 12 shows dubbing state in edit mode, and Figure 13 shows continuous cycle mode in T ₂ .
FOR playback state, Fig. 14 REV reproduction state of successive cycles mode in the T _2, FIG. 15 FOR reproduction state of one cycle mode in the T _2, FIG. 16 shows a reproducing state in the continuous playback mode It is a thing. 1,2 …… Cassette tape, 3,4 …… Capstan 6,8,9 …… Pinch roller, 15 …… End detection sensor 25 …… Auto stop sensor

Claims (1)

(57) [Claims] 1. The first cassette tape and the second cassette tape are stacked in a single storage portion to be stored, while one forward-side capstan that is commonly used for the forward-side running of both cassette tapes. And first and second pinch roller means capable of individually independently pressure-contacting the forward-side capstan via the first and second cassette tapes, and at least the reverse-side running of the second cassette tapes. And a third pinch roller means that presses against the reverse side capstan via the second cassette tape, and detects the tape ends of the first and second cassette tapes. First and second tape end detection means, and an edit mode in which both of the cassette tapes are run at the same time,
A continuous reproduction mode in which the running of the first cassette tape is automatically switched to the running of the second cassette tape, a continuous cycle mode for repeatedly playing back both the forward side and the reverse side of the second cassette tape, A mode select lever selectively placed by sliding operation at each mode position of a one-cycle mode for continuously reproducing both the forward side and the reverse side of the second cassette tape, and the detection operations of the both tape end detection means. Based on the mode position of the mode select lever, the first and second pinch roller means are simultaneously or selectively provided on the forward side capstan, and the third pinch roller means is selectively provided on the reverse side capstan. And a switching means for press contacting, the switching means When the select lever is in the continuous cycle mode, the 1-cycle mode and the continuous playback mode, it is placed in the stop operation impossible position, and when it is in the edit mode position, it is placed in the stop operation enable position and in the stop operation enable position. When the end select means for switching the operating state to the stop mode in response to the end detection operation of the first or second tape end detection means, and the mode select lever in the continuous reproduction mode position, the first tape In response to the operation of the end select means associated with the end detection operation of the end detection means, the mode select lever is moved from the position of the continuous reproduction mode to 1
When the mode selector lever is in the 1-cycle mode position, the end of the second tape end detecting means is slid to the position of the cycle mode and the tape switching device is switched to the reproduction running on the forward side of the second cassette tape. In response to the operation of the end select means associated with the detection operation, the second
Of the cassette tape is switched from the forward reproduction traveling to the reverse reproduction traveling and the first traveling direction switching means for displacing the end select means from the stop inoperable position to the stop operable position, and the mode select lever are When in the continuous cycle mode, in response to the operation of the end select means associated with the end detection operation of the second tape end detection means, the second tape end detection means operates.
And a second traveling direction switching means for switching the reproducing traveling direction of the cassette tape.