JPS6343823B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording or reproducing device, and more specifically, in a recording or reproducing device having at least two types of running paths for a tape-shaped recording medium, a long one and a short one, the running path of the tape-shaped recording medium is the longer one. This invention relates to an improvement in a mechanism for absorbing the slack in a tape-shaped recording medium that occurs when changing a running route from one running route to a shorter running route.

Conventionally, for example, in a magnetic recording and reproducing device that uses a cassette-type tape to record and reproduce images, a tape extractor pulls out the tape from a loaded tape cassette and transfers it to a rotating magnetic field for recording and reproducing images. Since images are recorded and played back while being loaded onto a guide drum equipped with a head, when removing a cassette, etc., the tape ejecting means must be returned to the direction of the cassette, and the tape running path must be changed at this time. It is necessary to return the tape to the cassette (i.e. unloading) while absorbing the slack of the tape that occurs. Conventionally, for example, an independent rotation means dedicated to absorbing tape slack during tape unloading is provided, and the tape reel is driven by this rotation means to unload the tape. It is possible to absorb the slack of the tape during tape recording, or to use the tape fast forwarding method that most of these types of devices have.
The drive system for high-speed tape running during fast reversal, etc. is operated during tape unloading, and the tape reel is driven by the high-speed tape running drive system, thereby absorbing tape slack during tape unloading. I try to do this. Comparing the two, the latter eliminates the need for additional elements such as an independent rotating means dedicated to absorbing tape slack during tape unloading, as seen in the former. This has the advantage of reducing the number of points and simplifying the configuration of the reel drive system, but on the other hand, when unloading the tape, the tape reel must be moved at high speeds such as fast forwarding and reversing. Since the tape/reel is driven in the same manner as when it is driven, the winding torque of the tape/reel becomes too large.
The winding speed is also considerably higher than the speed at which slack is generated in the tape as the tape pull-out means returns to the tape unloading position, resulting in disadvantages such as great stress being placed on the tape. In order to eliminate this kind of inconvenience, for example, when unloading a tape, there is a method of intervening a deceleration means in the above-mentioned high-speed tape running drive system, or a method of decelerating the drive motor. However, either method is disadvantageous in that it would complicate the configuration of the reel drive mechanism system or the motor control circuit.

The present invention was made in view of such circumstances,
There are at least two types of tape running routes, and tape slack caused by changing the running route from a longer running route to a shorter running route can be avoided, especially by fast forwarding the tape, This is a recording or reproducing device that uses a high-speed tape running drive system for fast rewinding, etc., to absorb the slack in the tape, and has a very simple configuration. This method is more advantageous because it does not cause any unreasonable stress and is completely free from disadvantages such as the above-mentioned complication of the configuration of the reel drive mechanism system or the complication of the configuration of the control circuit for the drive motor. In order to provide an improvement, the recording or reproducing device of the present invention has at least two types of running paths for a tape-shaped recording medium,
Tape-shaped recording is performed by transmitting the rotational torque of a rotating body for high-speed tape running to a rotating body for driving a tape/reel to rotate the rotating body for driving a tape/reel while the tape-shaped recording medium is on one running path. When driving the medium to run at high speed, and also when changing the running path of the tape-shaped recording medium from a longer running route to a shorter running route, the rotation transmission mechanism drives the rotating body for high-speed running of the tape. By transmitting the rotational torque to the tape/reel driving rotating body to rotate the tape/reel driving rotating body, the slack in the tape-shaped recording medium caused by the change in the traveling path at this time can be absorbed. At the same time, the rotational torque applied to the tape reel drive rotating body when changing the running path of the tape-shaped recording medium from a long running path to a short running path is applied to the tape high-speed running drive. The feature is that the rotation torque is lighter than that of the original.

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

First of all, FIG. 1 shows the external appearance of one embodiment of the magnetic recording/reproducing apparatus according to the present invention. With the fast-forward and fast-reverse operation keys, operating to the right in the figure fast-forwards the tape, and operating to the left fast-reverses the tape. 5 is a recording button, 6 is a stop button, and 124 is a power switch operation lever.

Next, to explain the details of the internal structure of the above device, first, FIGS. 2 and 3 show the details of the internal mechanism with the intermediate board and tape guide drum removed (FIG. 3 is particularly In the figure, 8 is a horizontal board of the device, 10 is a tape guide drum support fixed on the board 8, and the support 10
Above is a tape guide drum 9 equipped with rotating magnetic heads for recording and reproducing that are 180 degrees opposed, as will be described later.
is fixed at a predetermined angle (4th and 8th
(see figure). Reference numerals 11 and 12 denote tape unloading rings, which are supported so as to be rotatable around the guide drum by support rollers 13 appropriately placed at three locations on the guide drum support 10. The loading ring 11 has a spring piece 14 that engages with a base of a tape drawer member to be described later.
A fixedly supports the spring support base 14 that supported the spring support base 14, and also has a pinch roller 1 on the tip thereof.
A pinch roller arm 16, which rotatably supports a roller 8, is rotatably supported by a shaft 16a, and the pinch roller arm 16 is urged to rotate clockwise by a spring 17. On the other hand, the loading ring 12 has a spring piece 1 that similarly engages with the base of another tape drawer member to be described later.
A spring support stand 15 that supports 5a is fixedly supported. Furthermore, these loading rings 11,
12 has gear portions 11a and 1 on a part of their outer peripheries, respectively.
2a, and is driven by a loading motor 19 to reduce speed via a worm gear 20, a worm wheel 21, etc. through the gear parts 11a and 12a, and a loading gear 23 connected thereto. They are designed to be rotated in opposite directions. Reference numeral 24 denotes a stopper arm fixed on the board 8, and the stopper arm 24a is connected to a loading regulation pin 11b and an unloading regulation pin 11 planted on the loading ring 11.
The rotation ranges of the loading rings 11 and 12 are restricted by abutting the loading rings 11 at predetermined rotational positions during tape loading and tape unloading, respectively. Reference numeral 25 denotes a switch closing lever rotatably supported by a planted pin 24b of the stopper arm 24, and each of the loading regulation pin 11b and the unloading regulation pin 11c on the loading ring 11 is attached to the stopper arm 24.
When it comes into contact with the stopper part 24a, it is rotated clockwise and counterclockwise through the sector part 25a, and at this time, the switch operating arm 25b
and 25c, the loading completion detection switch 26 is turned on when loading is completed, and the unloading completion detection switch 27 is turned on when unloading is completed. The rotation range of the switch closing lever 25 at this time is limited to a predetermined angle because the pin 25d is located within the opening 24c of the stopper arm 24, and the pins 11b and 11c are 2
In the intermediate state before contacting 4a, switch 2
It is held in the neutral position by the acting force of elastic pieces 6 and 27. 28 is a tape supply reel stand, and 29 is a tape take-up reel stand, both of which are rotatably supported on the substrate 8. 30
is a reel stand brake/slide plate, which is supported so as to be slidable in the vertical direction by a pin 33 implanted in the base plate 8, and is biased downward by a spring 32, so that it can move in both left and right directions at the downward sliding position. The brake pad 30, which is made of an elastic member such as rubber and is attached to the tip of the arm extending from the top, comes into contact with the outer periphery of the two reel stands 28, 29, thereby applying a brake to the two reel stands 28, 29. It is done as if it were applied. Reference numeral 34 denotes a brake control lever, which is rotatably supported by a shaft 36 embedded in the base plate 8 and biased to rotate counterclockwise by a spring 35. The brake pad 31 is moved by sliding the brake slide plate 30 upwardly through the bent portion 30a using the control arm 34a against the spring 32.
The pressure contact between the reel stands 28 and 29 is released, and the brakes on the reel stands 28 and 29 are released, and the loading rings 11 and 1
2. When returning from the loading position to the unloading position, the unloading completion position,
That is, at the position where the unloading regulating pin 11c on the loading ring 11 abuts against the stopper portion 24a of the stopper arm 24, the control pin 12b on the loading ring 12 abuts against the protruding arm 34b, thereby causing the spring to be released. 35 in a clockwise direction to release the locking of the bent portion 30a of the brake/slide plate 30 by the control arm 34a, and the brake/slide plate 30 is When the locking by the brake control lever 34 is released, the spring 32
The brake pad 31 slides downward under the action of
The brakes are applied to both reel stands 28 and 29 by pressing them against the outer peripheries of both reel stands 28 and 29. Reference numeral 37 denotes a control lever for absorbing tape slack during unloading, which is rotatably supported by the shaft 36 and supported by a spring 38.
It is rotated counterclockwise at . When the loading rings 11 and 12 return from the loading position to the unloading position, the tape slack absorption control lever 37 is operated together with the brake control lever 34 by the control pin 12b on the loading ring 12.
By pressing 7b, it is rotated clockwise against the spring 38, and the details of its function will be described later. 39 is a fast-forwarding roller stand that rotatably supports the tape fast-forwarding roller 40; 41 is a fast-returning roller stand that rotatably supports the tape fast-returning roller 42; these roller stands 39 and 41 are attached to a common shaft 43 on the substrate 8; are rotatably supported by springs 44 and 44, respectively.
45 to rotate counterclockwise. The fast feed roller 40 is constantly rotated counterclockwise together with a capstan 116a by a capstan motor 115 through a mechanism to be described later, and when the operation key 4 is operated to the right, the fast feed roller stand 39 is activated by a mechanism to be described later. 44 and the fast-feeding roller 40 is brought into pressure contact with the outer periphery of the take-up reel stand 29, causing the reel stand 29 to rotate at high speed clockwise and fast-forwarding the tape. be exposed. Further, the fast-feeding roller 40 is connected to the take-up reel stand 2.
9 is in the non-contact position shown in the figure, by operating the operation key 4 to the left, the quick return roller stand 41 is rotated clockwise against the spring 45 through a configuration described later, and the quick return roller table 41 is rotated clockwise against the spring 45. The roller 42 is connected to the fast feed roller 40 and the tape supply reel stand 2.
8, the reel stand 28 is rotated counterclockwise at high speed, and the tape is quickly returned. As will be described later, during tape unloading, the quick return roller 42 is operated by the action of the spring 38 applied to the control lever 37 for absorbing tape slack, so that the fast return roller 42 can be moved to the tip of the lever 37 during tape unloading. Bending part 3
7a and its tip 41a, the spring 4
5, the fast feed roller 40 and the supply reel stand 2
The supply reel stand 28 is pressed against the outer periphery of the supply reel stand 8 with a relatively weak pressure force by the spring 38.
A lighter winding torque is applied to the tape than when rewinding the tape, thereby absorbing tape slack during tape unloading. Reference numeral 46 denotes a play lever operated by the play key 3, which is rotatably supported by a shaft 47 and biased to rotate counterclockwise by a spring 48. and recording mode), when the engaging portion 46 is rotated clockwise against the spring 48, the engaging portion 46 engages with the play lever locking portion 57b of the locking lever 57.
a, and furthermore, at this time, the roller stand 41 is rotated clockwise by the spring 38 applied to the control lever 37 by contacting the tip of the arcuate hook portion 41b at the tail end of the quick return roller stand 41. of,
Therefore, it has a bent portion 46b for preventing the fast return roller 42 from coming into pressure contact with the fast forward roller 40 and the supply reel stand 28. Reference numeral 49 is a stopper pin for regulating the position of the play lever 46 when the play lever 46 is rotated in the counterclockwise direction, and 50 is a stopper pin that is inserted through the switch input arm 46c when the play lever 46 is rotated clockwise. It is a play switch. 51 is the above operation key 4
The fast forward and fast reverse levers are rotatably supported by a shaft 52, and can be moved clockwise by operating the operation key 4 to the left, that is, by performing a tape fast reversing operation. When the fast return roller 42 is rotated, the folded portion of the fast return roller stand 41 is pressed and the roller stand 41 is rotated clockwise against the spring 45, thereby moving the fast return roller 42 between the fast forward roller 40 and the supply reel. The spring piece 51a for pressing the roller stand to be brought into pressure contact with the stand 28 is rotated by the shaft 54 when the operation key 4 is rotated counterclockwise by rightward operation of the operation key 4, that is, tape fast forward operation. A rotatably pivoted fast forward lever 53 is rotated clockwise from a neutral position against a neutral retaining spring 55 holding a pin 53b thereof, and is attached to the tip thereof.
By rotating the roller stand 39 clockwise using the roller stand pressing spring piece 53a for pressing the bent portion of the fast forward roller stand 39, the fast forward roller 40 is brought into pressure contact with the take-up reel stand 29. The pin 51b and an engaging portion 51 that engages with the lever locking portion 57c at the tip of the locking lever 57 when rotating clockwise and counterclockwise due to the tape fast-return operation and the tape fast-forward operation.
c and 51d (shown in Figure 3). 56
is the neutral holding spring 5 for the rapid forwarding lever 53.
5, and is configured such that counterclockwise rotation of both the roller stands 39 and 41 is restricted by its bent portion 56a. Here, the lever 51 is further provided with a bent portion 51e at the tip of its rightward extending arm, whereas the play lever 46 has a bent portion 51e when the lever 51 is in the neutral position. A notch 46d is provided for receiving the bent portion 51e when the lever 51 is rotated clockwise, so that when the lever 51 is in the neutral position, as shown in FIG. When the play lever 46 is rotated clockwise, that is, in the play mode or recording mode, the engagement between the notch 46d and the bent portion 51e causes the lever 51 to rotate. , operation of operation key 4 will be prohibited.
Further, the bending portion 46b of the play lever 46 is
When the lever 46 is rotated counterclockwise by the action of the spring 48 until it abuts against the stopper pin 49, as shown in FIG. The roller stand 41 is exactly opposite to the notch, so the roller stand 41 is
Only when the lever 46 is exactly in the position shown in FIG.
The fast return roller 42 can be pressed against the fast forward roller 40 and the supply reel stand 28. As shown in detail in FIG. 3, the locking lever 57 is supported so as to be able to slide left and right in the figure by engaging its elongated hole 57a with the shafts 47 and 54. The armature rod 58 of the shut-off solenoid 58 is located at the bent portion 57d.
is connected to a by a connecting pin 59, and
The armature rod 58a is biased to the left by a spring 60 provided on the armature rod 58a, and when the play lever 46 is rotated clockwise, the engagement portion 46a By locking the lever 46 with its locking portion 57b, the lever 46 is locked in its clockwise rotation position, and the fast forward/return lever 51 is rotated clockwise or counterclockwise. When the engaging part 51c or 51d is
By locking at C, the lever 51 is locked in its clockwise rotation position or counterclockwise rotation position, and the shut-off solenoid 58 is energized by operating the stop button 6. When the armature rod 58a is slid to the right against the spring 60 and is also slid to the right, at that time, the lever 46 or the lever 5 is moved by the locking portion 57b or 57c.
1 is released. Reference numeral 61 indicates a solenoid for pressing the pinch roller, and reference numeral 62 indicates a connecting rod connected to the armature rod 61a. Near the tip of the solenoid is a solenoid that is connected to the armature rod 61a. , pinch roller pressure contact spring 62a
One arm of a bell crank lever 63 is engaged with the bell crank lever 63, which is rotated clockwise about the shaft 64 through the bell crank lever 63. 65 is the lever 6
When rotating the shaft 6 in the clockwise direction, the shaft 6 is pressed by the implanted pin 63a on the other arm.
This is a pinch roller pressing lever that rotates counterclockwise about 6 to press the pinch roller 18 against the capstan 116a, and is equipped with an open-angled introduction part for receiving the shaft of the pinch roller 18. The spring 1 has a slot portion 65a and is hung between one of the sliding guide pins 70 and the idler pressure control slide plate 69.
It is rotated clockwise by a spring 67 whose acting force is much stronger than that of the spring 67. 68 is the lever 6
This is a stopper pin for regulating the clockwise rotation of 5. Reference numeral 72 denotes an idler support lever which rotatably supports a take-up idler 73, which is always rotated counterclockwise by a capstan motor 115 through a mechanism described later, and is rotatably supported by a shaft 74. The idler 73 is rotated clockwise by a spring 75, that is, in a direction that brings the idler 73 into pressure contact with the outer periphery of the take-up reel stand 29. In addition, with respect to the idler support lever 72, the idler pressure contact control slide plate 69 is moved in the clockwise direction of the pinch roller pressure contact lever 65, that is, the pinch roller 1
8 in the direction of separating it from the capstan 116a, the protruding portion 65a of the lever 65 presses the bent portion 69b at the tail end of the lever 65, thereby causing the lever 65 to slide downward against the biasing spring 71. At this time, by pressing the protruding part 72a of the lever 72 with the bent part 69a at the tip thereof, the lever 72 is
is rotated counterclockwise against the spring 75 to separate the idler 73 from the take-up reel stand 29. 76 is a tape tension detection lever with a tension detection pin 76 on its tip.
a, is rotatably supported by a shaft 77, and is biased to rotate counterclockwise by a spring 78. 79 responds to the tension detection operation of the tension detection lever 76 by moving the supply reel stand 28.
back tension to control the back tension of
The tension control lever has an interlocking pin 79a on its tip that abuts a part of the detection lever 76, is rotatably supported by the shaft 77, and has a much weaker spring than the spring 78. 80
A rod 8 is connected to one end of a back tension adjustment belt 81 which has a back tension adjustment member 82 made of felt or the like on its inner surface.
One end of 3 is latched. Reference numeral 84 denotes a support plate that fixedly supports the other end of the belt 81. The support plate 84 is attached to the base plate 8 through a long hole 84a with a screw 85 so that its position can be adjusted. It is possible to make an initial adjustment of the back tension attached to the. Note that 86 is a stopper pin for restricting the counterclockwise rotation of the levers 76 and 79, and 87 is a stopper pin for restricting the clockwise rotation of the lever 79. Reference numeral 88 sets the tension detection lever 76 to the operating position shown in the drawing when loading the tape, and rotates the lever 76 clockwise against the spring 78 when unloading the tape so that the detection pin 76 on the tip thereof is rotated. A control lever for positioning within the tape cassette, which is rotatably supported by a shaft 89 and biased clockwise by a spring 90; Above is the cam part 1 on the outer periphery of the loading ring 12.
2c, the follower roller 88a is in contact with
Further, on the tip of the other arm, there is provided a roller 88b for abutting against the cam portion 76b of the lever 76. Incidentally, reference numeral 91 is a stopper pin for restricting the clockwise rotation of the lever 88.

Next, details of the tape drawing means will be explained with further reference to FIGS. 4 to 8.

In this embodiment, a pair of tape pulling means are provided, each having pins 97R and 67L perpendicular to the substrate 8.
and inclined pins 99R and 99L corresponding to the inclination of the tape guide drum 9, and the base 9
2R and 92L, guide grooves (guide passages) 7a and 7 are bored in the horizontal intermediate substrate 7 parallel to the substrate 8 so as to substantially follow the periphery of the guide drum 9.
b, respectively, and the substrates 92R, 92L.
, respectively, the loading ring 11
The loading rings 11 and 12 are engaged by the spring pieces 14a and 15a attached to the spring supports 14 and 15 on the loading rings 11 and 12.
As the tape T rotates, the tape T stored in the tape cassette C is taken out from the tape cassette C according to the guide grooves 7a and 7b and attached to the outer periphery of the guide drum 9 in a spiral shape by more than 180 degrees. It is configured to be able to move between a loading position where the tape T is wound and an unloading position where the tape T is stored in the opening C' of the cassette C.

That is, the details of the structure of the tape pulling means on the right side will now be explained with particular reference to FIG. As shown in detail, it has a shape in which two cylindrical portions 92Ra and 92Rb are connected at a bridge portion 92Rc, and in this case, these cylindrical portions 92Ra and 92Rb have the same diameter and are connected to the guide groove 7.
It has dimensions that allow it to fit loosely into a. The base 92R
is recessed into the guide groove 7a, and the skate board 93R and the pressing spring piece 94R are inserted from above and below.
However, screws 95Ra, 9 are inserted so as to sandwich the intermediate board 7.
By being attached to the base 92R at 5Rb, it is held slidably along the guide groove 7a.
In this state, both the cylindrical body parts 92Ra and 9
The spring piece 14a supported by the spring support 14 on the loading ring 11 is engaged with the recess 92Rd between 2Rb and the base 92R is guided as the loading ring 11 rotates. It will be slid along the groove 7a. 9
6R is a shaft member having a vertical pin 97R for regulating the tape width direction as a tape pull-out pin at its tip, and after passing through the notch 93Ra of the skate member 93R,
is press-fitted into the Reference numeral 98R denotes a tilt pin support lever having a tilt pin 99R installed at an angle of inclination corresponding to the tilt angle of the tape guide drum 9, which is rotatably supported by the shaft member 96R; 92R and the protrusion 92Rf, the extending arm 98Ra is moved counterclockwise by the spring 100R applied between the protrusion 92Rf and the protrusion 92Rf.
It is rotated and energized so as to collide with Rf. The vertical pin 97R is screwed onto the tip of the shaft member 96R with a screw or the like so that it can be adjusted vertically to adjust the tape width direction. In addition, the tilt pin 99R has its support lever 98
R extends its extending arm 98 under the action of spring 100R.
When Ra is rotated counterclockwise until it abuts against the protrusion 92Rf of the base 92R, the support is positioned approximately along the guide groove 7a relative to the vertical pin 97R as shown in the figure. This is installed on the lever 98R.

The details of the structure of the tape pull-out means on the right side are as described above, but as for the structure of the tape pull-out means on the left side, as shown in FIG.
It is constructed in a symmetrical relation to the tape pulling means on the right side described above, except that the direction of inclination is different, and therefore, the explanation thereof will be omitted here and will only be shown in the drawings. By the way, 4th to 8th
In the figure, the numeral suffix "R" means a component of the tape pull-out means on the right side, and "L" means a component of the tape pull-out means on the left side. .

Returning again to FIG. 4, 101R and 101L are V-shaped blocks for regulating the positions of the vertical pins 97R and 97L, respectively, at the tape loading completion position, and the large diameter portions 9 of the respective shaft members 96R and 96L.
Block bases 102R and 102L on the intermediate board 7 have V-shaped recesses for receiving 6Ra and 96La.
At the top, the screw 103 is attached so as to be adjustable in position at a position corresponding to the loading completion position.
It is fixed by R, 103L. 104R
and 104L each have a tilt pin support lever 98 on its tip in the tape loading completed position.
By contacting the extending arms 98Ra, 98La of R, 98L, each lever 98R, 98L is moved clockwise and counterclockwise about the shaft members 96R, 96L, respectively, against its respective biasing springs 100R, 100L. Pin 1 for rotating and rotating the inclined pins 99R and 99L along the guide drum 9
04Ra, 104La, the eccentric pin 106R is rotatably supported by the implanted shafts 105R, 105L on the intermediate board 7, and is engaged with the slot portions 104Rb, 104Lb. The position of the pins 104Ra and 104La can be adjusted by adjusting the rotation of the pin 106L. 107R and 107L are screws for fixing the levers 104R and 104L after adjusting their positions.

Here, we will particularly explain the guide groove 7a in the intermediate board 7 for the right tape pull-out means.As shown in the figure, the guide groove 7a is located between the tape unloading position and the tape loading position. At an intermediate position, a passage groove 7a' for exclusive use of the tape pull-out means roughly along the circumference of the guide drum 9 and a passage groove 7a for exclusive use of the pinch roller gradually spaced apart from the guide drum 9 toward the capstan 116a. That is, here, the pinch roller support rod portion 16b (shown in FIG. 8) at the tip of the pinch roller arm 16 is connected to the base 92R of the tape drawing means on the right side. At the rear position, the guide groove 7a is inserted from the back side of the intermediate board 7, and the pinch roller 18 is rotatably supported on the front end of the rod part 16 on the front side of the intermediate board 7. In addition, the base 92R has guide grooves 7 in both cylindrical body parts 92Ra and 92Rb as shown in FIG.
a and the tape drawing means dedicated passage groove 7a' is configured such that the engagement length A is larger than the opening width B at the branching point 7a of the pinch roller dedicated passage groove 7a'', and the base 92R The spring piece 14a attached to the support base 14 on the loading ring 11, which engages with the recess 92Rd, has its tip opened outward as shown in FIGS. 2, 5a, and 8. Therefore, when the loading ring 11 is rotated in the counterclockwise direction, the base 92R does not enter the guide groove 7a into the pinch roller dedicated passage groove 7a'', but instead is used as a dedicated tape pulling means. It enters the passage groove 7a' and is eventually guided by the guide groove 7a and the passage groove 7a' dedicated to the tape pulling means from the unloading position shown by the two-dot chain line to the loading position shown by the solid line in FIG. and began to move,
On the other hand, the rod portion 16b of the pinch roller arm 16 is guided at the fork point 7a because the arm 16 is urged to rotate clockwise by the spring 17 as explained in FIG. From the groove 7a, it enters the pinch roller exclusive passage groove 7a'' without entering the tape drawing means exclusive passage groove 7a', and is eventually guided by the guide passage 7a and the pinch roller exclusive passage groove 7a''. This causes the pinch roller 18 to move from the inactive position shown in phantom lines in FIG. 4 to the ready position (capstan 116
A can now be moved to a position where they face each other without contacting each other. At this time, at the loading position, the large diameter portion 96Ra of the shaft member 96R of the tape drawing means is connected to the V-shaped block 1 as described above.
The vertical pin 97R comes into position by coming into contact with the V-shaped recess of 01R, and the extending arm 98Ra of the tilt pin support lever 98R moves to the tilt pin rotation lever 1.
The lever 98 comes into contact with the pin 104Ra of 04R.
By rotating clockwise R against the spring 100R, the inclined pin 99R is rotated along the outer circumference of the guide drum 9, while the rod portion 1 of the pinch roller arm 16
6b is a slotted portion 65 of the pinch roller pressing lever 65 shown in FIG.
It seems to go inside a. Incidentally, with the pinch roller pressure contact lever 65 receiving the rod portion 16b of the pinch roller arm 16 in its slot portion 65a as described above, the armature rod 61a is moved by energizing the pinch roller pressure contact solenoid 61. When the connecting rod 62 connected thereto is slid downward, and thereby the bellcrank lever 63 is rotated clockwise under the pressure of the spring 62a, the spring 67 is rotated through the pin 63a. 2 and 4, the pinch roller arm 16 is rotated counterclockwise against the pinch roller arm 16, thereby pressing the rod portion 16b of the pinch roller arm 16 through its slot portion 65a, thereby causing the pinch roller 18 to move as shown in solid lines in FIGS. 2 and 4. It is brought into pressure contact with the capstan 116a. In this case, the pressing force of the pinch roller 18 against the capstan 116a is obtained by the spring 62a on the connecting rod 62 acting on the bellcrank lever 63 and the spring 17 acting on the pinch roller arm 16. (However,
In this case, the acting force of the spring 17 is so weak that it can be ignored compared to the acting force of the spring 62c).

In FIG. 4, 108 is a magnetic head for full-width erasing, 109 is a magnetic head for erasing audio and control tracks, 110 is a magnetic head for recording and reproducing audio signals and control signals,
111 are all tape guide posts (or rollers) planted on the intermediate substrate 7, GP are tape guide pins (or rollers) in the tape cassette C, and 112 are all intermediate substrates 7. The intermediate substrate 7 is attached parallel to the substrate 8 using screws for attaching the intermediate substrate 7 to the intermediate substrate mounting table 8a (shown in the second and third figures) of the substrate 8. Also, in Fig. 8, the guide drum 9 has a tape attached to its outer circumference.
a fixed lower drum 9a having a lead 9c;
It consists of an upper rotary drum 9b having recording and reproducing magnetic heads 113a and 113b facing each other at 180 degrees and rotationally driven by a rotary head motor 114. Guide drum support stand 1 with a tilted angle
0, and on the other hand, the tape T is drawn out horizontally, that is, parallel to the substrate 8, by the above-mentioned tape drawing means, and extends 180 degrees around the outer periphery of the guide drum 9. The rotating head 113a is wound in a strongly tethered manner, as is well known.
and 113b, the magnetic surface is obliquely scanned.

Here, in particular, a loading motor 1 for driving the loading rings 11 and 12;
The control circuit for 9 will be explained with reference to FIG. Here, the normal rotation of the motor 10 drives the worm wheel 21 shown in FIG. , that is, the worm wheel 21 is driven in the tape loading direction, and the worm wheel 21 is driven clockwise by reversing, so that the loading rings 11 and 12 are respectively driven in the clockwise and counterclockwise directions, that is, the tape unloading direction is driven in the tape unloading direction. It is driven in the direction of deterioration.

In FIG. 10, 26, 27, and 50 are the previously described tape loading completion detection switch, tape unloading completion detection switch, and play switch, each of which is connected to the + side of the power supply. and the other side is grounded via resistors R ₁ , R ₂ and R ₃ , and a high signal is sent to the ground point of each resistor R ₁ , R ₂ , and R ₃ when the switch is on, and a low signal when the switch is off. This is done so that a signal can be obtained. IV ₁ , IV ₂ and IV ₃ are connected to switches 26 and 5 respectively.
An inverter to invert the signal obtained according to the on/off of 0 and 27, NA ₁ is an inverter
A NAND gate, NA ₂ , was made to receive the output of IV ₁ and the signal obtained at the ground point of play switch 50 and resistor R ₂ , and the output of inverters IV ₂ and IV ₃ . Nando Gate, IV ₄
and IV ₅ are inverters for inverting the outputs of the NAND gates NA ₁ and NA _2, respectively, and the outputs of these inverters IV ₄ and IV ₅ are connected via resistors R ₄ and R _5.
It is designed to be attached to each base of the npn switching transistors TR ₁ and TR ₂ . here,
The collector side of the transistor TR ₁ is connected via a resistor R ₆ to the base of a pnp switching transistor TR ₃ , and its emitter side is connected to the base of an npn switching transistor TR ₄ located diagonally with respect to the transistor TR ₃ . It is connected to the base and to its own base via resistor _R7 . On the other hand, the collector side of transistor TR ₂ is a resistor
PNP switching transistor TR ₅ through R ₈
and its emitter side is connected to the base of an npn switching transistor TR ₆ located diagonally to the transistor TR ₅ and to its own base via a resistor R ₉ . There is. Note that the emitter side and base of transistors TR ₃ and TR ₅ (the bases are connected to resistors R ₁₀ and
_R11 ) to the + side of the power supply, and the emitters and bases of transistors _TR4 and _TR6 are grounded (the bases are connected via resistors _R12 and _R13 , respectively), and the loading・Motor 19
is inserted and connected between the collector connection point of the transistors TR ₅ and TR ₄ and the collector connection point of the transistors TR ₃ and TR ₆ .

In such a configuration, with the tape unloading completed, the play operation can be performed.
When the switch 50 is turned on, the NAND gate
The output of NA ₂ is high, therefore the output of inverter IV ₅ remains low, the output of NAND gate NA ₁ is low, therefore the output of inverter IV ₄ is high, which causes transistor TR ₁ to conduct. Therefore, transistors TR ₃ and TR ₄ become conductive, and current flows through the loading motor 19 in the direction of arrow X, causing the motor 19 to rotate in the normal direction. and,
When the tape loading completion detection switch 26 is turned on as described above at the loading completion position, the output of the NAND gate NA ₁ becomes high, and therefore the output of the inverter IV ₄ becomes low, causing the transistor TR ₁ to become disabled. Therefore, both transistors TR ₃ and TR ₄ become non-conductive, and the motor 19 comes to stop. On the other hand, when the play switch 50 is turned off in this tape loading state, since the tape unloading completion detection switch 27 is off at this time, the output of the NAND gate NA ₁ is high, so , the output of inverter IV ₄ remains low, the output of NAND gate NA ₂ remains low,
Therefore, the output of the inverter IN ₅ becomes high, which makes the transistor TR ₂ conductive, so that the transistor TR ₅ becomes conductive, and a current flows through the loading motor 19 in the direction of the arrow Y.
9 becomes reversed. Then, when the tape unloading completion detection switch 27 is turned on as described above at the tape unloading completion position, the output of the NAND gate NA ₂ becomes high, and therefore the output of the inverter IV ₅ becomes low. Then, the transistor TR ₂ becomes non-conductive, and therefore the transistors TR ₅ and TR ₆ become non-conductive, so that the motor 19 comes to stop.

Thus, by rotating the loading motor 19 in the forward direction, the tape T is loaded onto the guide drum 9, and by rotating it in the reverse direction, the tape T is unloaded into the cassette.

In addition, here loading rings 11 and 12
When rotating in the counterclockwise and clockwise directions, that is, in the loading direction, the large diameter portions 96Ra and 9 of the shaft members 96R and 96L in the tape drawing means
6La hits the V-shaped blocks 101R and 101L, respectively, slightly before the loading regulation pin 11b on the loading ring 11 collides with the stopper portion 24a of the stopper arm 24 and the loading ring and 12 are stopped. therefore, the loading ring 1 at this time
Springs 14a and 15 due to excess rotation of 1 and 12
The large diameter portions 96Ra and 96La are respectively bent into the V-shaped block 10 by the pressing force generated by the elastic deformation of a.
1R and 101L, and as a result, the vertical pins 97R and 97L are held stationary without rattling at the loading completion position.

Next, the configuration of the capstan and reel drive system will be explained with further reference to FIG. 9.

In Figure 9, the capstan motor 115
has a flat pulley 115a for driving a flywheel and a V-shaped pulley 115b for driving a reel on the tip of its output shaft extending to the back side of the substrate 8. Reference numeral 116 denotes a flywheel rotatably supported by the base plate 8. Its rotating shaft is formed as a capstan 116a, and its tail end is supported by a leaf spring 117.
Nebelt 118 is hung between the flywheel driving Nepulley 115a on the output shaft of No. 15.
It is designed so that it is rotationally driven by the nap pulley 115a via. 119a is a reel driving V-pulley 11 on the output shaft of the motor 115.
The idler pulley is rotationally driven by the V pulley 115b through the V belt 121 stretched between the pulley 119a and the take-up idler 73 on the support lever 72 described in FIGS. They are connected via a friction clutch 120. 119b is a V-pulley that is integrated with the idler pulley 119a, and 122 is a V-belt 123 that is placed between the idler pulley 119b and the pulley 119.
A V-pulley rotationally driven by b is connected to the fast feed roller 40 explained in FIGS. It can rotate integrally with the rapid feed roller 40.

In Figures 2, 3, 4, and 9, 28a is the supply reel spindle, and 29a is the take-up reel.
When the tape cassette C is lowered to the predetermined horizontal position (parallel position to the substrate) of the cassette stand 2a after the apparatus into the cassette storage part 2,
engages the supply reel and take-up reel, respectively. By the way, cassette storage section 2 of this set C
When the cassette table 2a is lowered to a predetermined horizontal position after the apparatus has been moved, the vertical pins 97R, 97L and the inclined pin 99 of the tape unloading means are in the tape unloading position as shown by the two-dot chain line in FIG.
R, 99L, pinch roller 18 and tape
The detection pin 76a of the tension detection lever 76 is inserted into the back side of the tape T in the cassette C through the opening C' of the cassette C.

Next, the operation of the magnetic recording/reproducing apparatus having the above configuration will be explained.

First, when the equipment is stopped, loading
Rings 11 and 12 are the loading ring 1
Until the unloading regulating pin 11c on the top 1 collides with the stopper portion 24a of the stopper arm 24 and is regulated, the unloading lever 25 remains fully rotated clockwise and counterclockwise, respectively. Since it is rotated clockwise, the unloading completion detection switch 27 is turned on by the extending arm 25, and the vertical pins 97R, 97L, the inclined pins 99R, 99L, and the pinch roller of the tape drawing means are turned on. 18
are located near the ends of the guide grooves 7a and 7b corresponding to the opening C' of the cassette C, respectively, as shown by the two-dot chain lines in FIG. 100R, 100L
As a result, the extending arms 98Ra, 98La of the respective inclined pin support levers 98R, 98L abut against the protruding parts 92Rf, 92Lf of the bases 92R, 92L so as to substantially follow the guide grooves 7a, 7b with respect to the vertical pins 97R, 97L. It is in a state where it is rotated counterclockwise and clockwise until it stops. Also, at this time, since the control lever 88 is rotated counterclockwise against the spring 90 by the action of the cam portion 12c on the outer periphery of the loading ring 12, the tension detection lever 76 is rotated counterclockwise against the spring 78. Therefore, the detection pin 76a on the tip thereof is located at a position corresponding to the opening C' of the cassette C, as shown by the two-dot chain line in FIG. In conjunction with this, the back tension control lever 79 is rotated clockwise by the spring 80 until it collides with the stopper pin 87 and is regulated. The braking force for adjustment is completely relaxed.
At this time, the control pin 12b on the loading ring 12 causes the brake control lever 34 and the tape slack absorption control lever 37 to be activated by the spring 3, respectively.
5, 38 in the clockwise direction, thereby causing the brake slide plate 30 to slide downward under the action of the spring 32 and move the brake pad 31 to the supply reel stand 28 and the winding pad 31. Both reel stands 2 are pressed against the outer periphery of the reel stand 29.
8 and 29, and the quick return roller stand 41 is rotated counterclockwise by the action of the spring 45 until it collides with the bent portion 65a of the spring support stand 56 and is regulated. Therefore, the fast return roller 42 is spaced apart from both the supply reel stand 28 and the fast forward roller 40. At this time, the fast feed roller stand 39 is also rotated counterclockwise under the action of the spring 44 until it collides with the bent portion 56a of the spring support stand 56 and is regulated. 40 is in a state separated from the take-up reel stand 29. Furthermore, in this state, the pinch roller pressure contact lever 65 is not energized because the pinch roller pressure contact solenoid 61 is not energized.
is the bell crank lever 6 due to the action of the spring 67.
3 in the counterclockwise direction, and the idler pressure control slide plate 69 is rotated in the clockwise direction while sliding the slide plate 69 downward. Nearby, the rod portion 16b of the pinch roller arm 16
, pinch roller 18 and capstan 116
a, as shown by the dashed line in FIG. The idler support lever 72 is rotated counterclockwise against its spring 75 by being slid downward by the lever 72, thereby separating the take-up idler 73 from the take-up reel stand 29.

Now, in this stopped state, tape cassette C
is placed in the cassette storage section 2, and in this state, the cassette C is placed on the intermediate board 7 together with the cassette stand 2a.
When the vertical pin 97 of the tape pulling means is lowered to a predetermined position parallel to the
R, 97L, inclined pins 99R, 99L, pinch roller 18 and tension detection lever 7
The tension detection pins 76a of 6 each enter the cassette C through the opening C' of the cassette C, and the tape is tensioned in the opening C' as shown by the two-dot chain line in FIG. It will be located on the back side of the T. In this state, turn the power switch operation lever 1
24 to the right and turn on the power switch (not shown), as is well known, the rotating head motor 11
4 starts rotating, and the rotating heads 113a and 11
3b comes to be rotated together with the guide drum 9 and the rotating drum 9b, and the capstan motor 115 starts rotating to drive the capstan 116 through the power transmission system explained in FIG.
a. Winding idler 73 and fast feed roller 4
0 will now be driven to rotate counterclockwise, and furthermore, power will be supplied to a well-known recording/reproducing circuit (not shown). Next, play key 3
to the left to move the play lever 46 to the spring 48.
When the switch is rotated clockwise against the rotational force, the play lever locking portion 57b of the locking lever 57 is engaged with the engaging portion 46a on the switch closing arm 46c under the action of the spring 60 at the predetermined rotational position. When engaged, it becomes locked at the predetermined rotational position, and at this time, the bent portion 46b at the tip thereof faces the tip of the arcuate hook portion 41b at the tail end of the fast return roller stand 41. This makes it possible to prevent clockwise rotation of the roller stand 41, and the notch 46d forms the bent portion 5 at the tip of the rightwardly extending arm of the fast-forwarding and fast-returning lever 51.
1e, the rotation of the lever 51 and therefore the operation of the fast forward and fast reverse operation keys 4 are disabled, and furthermore, the switch closing arm 46 is disabled.
c will now turn on the play switch 50.
When the play switch 50 is turned on,
The loading motor 19 starts normal rotation by the control circuit explained in FIG. 10. When the loading motor 19 starts normal rotation, the loading ring 11 is rotated as described above.
and 12 are rotated counterclockwise and clockwise, respectively, so that the control pin 12b on the loading ring 12 is moved clockwise, so that the brake control lever 34 and the tape slack absorption control lever 37 are moved by the springs, respectively. 35, 38 and rotates counterclockwise under the action of brake control lever 3.
4 counterclockwise, the brake slide plate 30 is pulled upward against its spring 32, and the pressure contact of the brake pad 31 against the outer periphery of the reel stands 28, 29 is released. The brakes on the reel stands 28 and 29 are then released. In addition, the tape slack absorption control lever 3
7 tries to rotate the quick return roller stand 41 clockwise against the spring 45 when it is rotated counterclockwise by the action of the spring 38, but in this state, the tail end of the roller stand 41 is rotated counterclockwise by the action of the spring 38. The tip of the arcuate hook portion 41b is the bent portion 46b at the tip of the play lever 46.
, the roller stand 41 cannot be rotated clockwise, and therefore the quick return roller 4
2 is maintained apart from the supply reel stand 28 and the fast feed roller 40.

Now, when the loading rings 11 and 12 are rotated counterclockwise and clockwise, respectively, the right side tape pull-out means and the pinch roller 18 are rotated counterclockwise along the guide groove 7a, and the left side The tape pulling means of each of the vertical pins 97 of
The tape T is pulled out and moved by R, 97L, and the tape pulling means on the right side has the above-mentioned structure and is connected to the pinch roller dedicated passage groove from the guide groove 7a at the branching point 7a of the guide groove 7a. 7a'', but enters into the passage groove 7a' exclusively for the tape extracting means and moves further along the passage groove 7a' exclusively for the tape extracting means,
On the other hand, in the pinch roller 18, the pinch roller arm 16 is rotated clockwise by a spring 17, and the rod portion 16b is rotated in the guide groove 7.
In order to enter the pinch roller exclusive passage groove 7a'' without entering the tape pulling means exclusive passage groove 7a' at the branching point 7a of the guide groove 7a, from the branching point 7a onwards, the pinch roller exclusive passage groove is formed. 7a''. Then, a little before the loading regulating pin 11b on the loading ring 11 comes into contact with the stopper portion 24a of the stopper arm 24 and becomes regulated, the inclined pin support lever 98R of each tape drawing means, 98L extension arm 98Ra, 9
8La are tilt pin turning levers 104R and 10, respectively.
The levers 98R and 98L abut against the pins 104Ra and 104La of the spring 100, respectively.
R, 100L are rotated clockwise and counterclockwise, thereby tilting pins 99R, 99
L moves the tape T onto the guide drum 9 while aligning the tape surface with the slope of the guide drum 9 at the tape feeding and feeding parts to the guide drum 9.
The guide drum 9 is rotated clockwise and counterclockwise along the outer periphery of the guide drum 9 in order to wrap the tape over a range of more than 180 degrees, and at the same time, each tape drawer The large diameter portions 96Ra and 96La of the shaft members 96R and 96L of the means abut against the V-shaped recesses of the V blocks 101R and 101L, respectively, thereby regulating the positions of the vertical pins 97R and 97L. As mentioned above, the respective rotational positions of the inclined pins 99R and 99L at this time can be adjusted by adjusting and rotating the inclined pin turning levers 104R and 104L with their eccentric pins 106R and 106L, respectively. Adjustment of the winding angle of the tape T with respect to the guide drum 9 and the tape lead 9 of the lower fixed drum 9a of the tape T
It is possible to accurately and easily make delicate adjustments such as travel adjustment for c, and the vertical pin 97
V-shaped block 1 is also used for the stop position of R and 97L.
01R, 101L to block base 102R, 10
Adjustment can be made by adjusting the position back and forth on 2L. Now, like this, the inclined pin 99
R and 99L are respectively rotated along the guide drum 9, and the shaft members 96R and 96L are
After colliding with the blocks 101R and 101L, and after a slight excess rotation of the loading rings 11 and 12, the loading regulating pin 11b on the loading ring 11 collides with the stopper arm 24 and is regulated. The vertical pins 97R and 97L are held stationary at their respective tape loading completion positions by the pressure contact force caused by the elastic deformation of the spring pieces 14a and 15a due to the excessive rotation at the time. roller 1
8, the rod portion 16b of the pinch roller arm 16 connects from the pinch roller dedicated passage groove 7a'' to the slot portion 65 of the pinch roller pressure contact lever 65.
As shown by the dashed line in FIG. 4, the capstan 116a comes to face the capstan 116a with the tape T sandwiched therebetween, with a slight distance therebetween.

When the loading ring 12 rotates clockwise at this time, the control lever 88 rotates clockwise following the cam portion 12c on the outer periphery of the loading ring 12 under the action of the spring 90. Accordingly, the tension detection lever 76 is activated by the control lever 8.
In order to release the restriction by the roller 88b at the tip of the pin 8, the tape T is rotated counterclockwise by the force of the spring 78 and the tape T is attached to the pin 76a as shown in FIG.
At this time, as the tension detection lever 76 rotates counterclockwise, the tension control lever 79 has its pin 79a pushed by a part of the tension detection lever 76. The tension adjusting belt 81 is rotated counterclockwise against the spring 80, and the tension adjusting member 82 on the inner surface thereof is brought into pressure contact with the outer periphery of the supply reel stand 28. On the other hand, a back tension corresponding to the tape tension at this time is given.

Now, after the above tape loading operation is performed, the loading regulation pin 11b on the loading ring 11 is moved to the stopper arm 2.
When the unloading detection switch 27 is turned off and the unloading detection switch 27 is turned off, the switch closing lever 25 is rotated clockwise by the pin 11b. The loading completion detection switch 26 is turned on by the extending arm 25b, and the 10th
The loading motor 19 is stopped by the control circuit illustrated in the figure. On the other hand, when the loading completion detection switch 26 is turned on, the pinch roller pressure welding solenoid 61 is energized, and the armature rod 61a and the connecting rod 62 connected thereto slide downward.
At this time, the bellcrank lever 63 is rotated clockwise via the spring 62a, and the pinch roller pressing lever 65 is rotated counterclockwise against the spring 67. 18 comes to be pressed against the capstan 116a by pinching the tape T as shown by the solid line in FIG. 4 by the acting force of the spring 62a at this time. Since the downward pressure on the idler pressure control slide plate 69 is released by rotation in the clockwise direction, the idler support lever 72 is moved by the spring 75.
The winding idler 73 is rotated clockwise while sliding the slide plate 69 upward due to the acting force of the winding idler 73.
is brought into pressure contact with the outer periphery of the take-up reel stand 29, and thus tape running by the capstan 116a and pinch roller 18 and tape winding by clockwise rotation of the take-up reel stand 29 are started, and the tape T Recording or reproduction is started by being caused to travel along the recording/reproducing cassette outside traveling path via the guide drum 9. That is, if the recording button 5 is operated at this time, the recording/reproducing circuit (not shown) is placed in the recording mode and recording is performed, and if it is not operated, the recording/reproducing circuit (not shown) is placed in the playback mode and reproduction is performed.

Next, to explain the stopping operation during recording or reproducing operation, if the stop button 6 is operated during recording or reproducing operation, a shut-off switch (not shown) is turned on and the shut-off is started.
Off solenoid 58 is energized and causes its armature rod 58a to disengage spring 60.
Since the locking lever 57 is slid to the right against the
The lever 46 is moved counterclockwise until it is regulated by the spring 48 against the stopper pin 49 in order to release the locking by the play lever locking portion 57b of the locking lever 57 from the locking portion 46a. It will rotate and return to the non-operating position. When the play lever 46 returns to the non-operating position,
Along with this, the play switch 50 is turned off, so that the loading motor 19 is reversed by the control circuit explained in FIG.
This allows the loading rings 11 and 12 to be rotated clockwise and counterclockwise, respectively. First, when the loading ring 11 rotates clockwise at this time, the loading regulating pin 11b separates from the stopper part 24a of the stopper arm 24, and accordingly, the pressure on the switch closing lever 25 is released, so that the loading control pin 11b is released. The completion detection switch 26 is turned off, and as a result, the power to the pinch roller pressure welding solenoid 61 is cut off, so the pinch roller pressure welding lever 65 rotates the bellcrank lever 63 counterclockwise by the action of the spring 67. Therefore, the connecting rod 62 and the armature rod 61a are slid upward, and the idler pressure control slide plate 69 is slid downward and rotated clockwise to separate the pinch roller 18 from the capstan 116a. become,
Also, at this time, the slide plate 69 slides downward to hold the idler support lever 72 against its spring 75.
The take-up idler 73 is moved away from the take-up reel stand 29 by rotating clockwise against the pressure, thereby stopping the running of the tape. On the other hand, when the loading rings 11 and 12 are rotated clockwise and counterclockwise, respectively, the pinch roller 18 moves along the pinch roller dedicated passage groove 7a'' and the guide groove 7a, and also moves toward the tape drawer on the right side. The means is a passage groove 7 dedicated to tape pulling means.
a' and along the guide groove 7a in the clockwise direction, while the left tape pulling means is moved in the counterclockwise direction along the guide groove 7b, and at this time, the loading ring 12
The control lever 88 is moved by the spring 90 by the cam portion 12c.
The tension detection lever 76 is rotated clockwise against its spring 78 through the roller 88b on its tip, which is rotated counterclockwise against the spring 78, and the tension control lever 79 is rotated accordingly. The spring 80 causes the stopper pin 8
It is now possible to rotate clockwise until it collides with 7 and is regulated. Moreover, on the other hand, the play lever 46
When the tape returns to the non-operating position, the bent portion 46b at the tip is removed from the tip of the arcuate hook portion 41b at the tail end of the quick return roller stand 41, so the tape slack absorption control lever 37 is moved by the spring 38. The acting force causes the fast return roller stand 41 to rotate clockwise against its spring 45, and the fast return roller 42 is pressed against the supply reel stand 28 and the fast return roller 40 with a predetermined pressing force by the spring 38. By rotating the supply reel stand 28 in a counterclockwise direction, a lighter winding torque is applied to the supply reel stand 28 than when rewinding the tape. The slack of the tape T is now absorbed, and the running path of the tape T becomes the running path within the cassette.

Tape unloading is performed by the above operations, and both left and right tape pulling means,
Pinch roller 18 and tension detection pin 7
6a reaches the unloading position shown by the two-dot chain line in FIG. , 37b and rotate these levers 34 and 37 together clockwise against their respective springs 35 and 38, whereby the brake slide plate 30 slides downward under the action of the spring 32. Then move the brake pads 31 to both reel stands 28,
By pressing against the outer periphery of reel 29, brakes are applied to both reel stands 28 and 29, and
The fast return roller stand 41 is rotated counterclockwise by the spring 45 to separate the fast return roller 42 from the supply reel stand 28 and the fast forward roller 40, thus completing tape unloading. Become.

Next, operations during tape fast forwarding and fast reversing will be explained. To fast-forward the tape, operate the operation key 4 to the right, and to fast-reverse the tape, operate the operation key 4 to the left. When the operation key 4 is operated to the right to perform
1b, the fast forward lever 53 is activated by the neutral holding spring 55.
At this time, the spring piece 53a at the tip rotates the fast-forwarding roller stand 39 clockwise against the spring 44, thereby winding the fast-forwarding roller 40. The take-up reel base 29 is pressed against the outer periphery of the take-up reel base 29, and the take-up reel base 29 is rotated clockwise at high speed, so that the tape T is rapidly fed along the travel path within the cassette. At this time, the lever 51 is locked at the fast-forward operating position by the engaging portion 51d of the lever 51 engaging with the locking portion 57c of the locking lever 57 at a predetermined rotational position in the counterclockwise direction. Therefore, in order to stop the tape fast forwarding, the stop button 6 is operated to energize the shut-off solenoid 58 and slide the locking lever 57 to the right. What is necessary is to release the lock at the operating position.

On the other hand, if the operation key 4 is operated to the left in order to fast-reverse the tape with the tape unloading completed, the fast-forward/fast-reverse lever 51 is rotated clockwise. The fast return roller stand 41 is rotated clockwise against the spring 45 through the spring piece 51a on the extending arm, and the fast return roller 42 is rotated by the spring 38 which is hooked on the tape slack absorption control lever 37. The supply reel table 28 and the fast-feeding roller 40 are pressed against each other with a force stronger than the acting force, thus providing a stronger winding effect on the supply reel table 28 than when absorbing tape slack during tape unloading. By applying torque and rotating the reel stand counterclockwise at high speed, the tape T is quickly returned along the traveling path within the cassette. In this case as well, the lever 5
1 is locked in the quick return operation position by the engaging portion 51c of the locking lever 57 engaging with the locking portion 57c of the locking lever 57 at a predetermined rotational position in the clockwise direction. To stop the tape fast reversal, operate the stop button 6 to energize the shut-off solenoid 58 and slide the locking lever 57 to the right, thereby locking the lever 51 in the fast reversing operating position. It would be better if the lock was released.

Now, as described in detail above, the recording or reproducing apparatus of the present invention has at least two types of running paths for the tape-shaped recording medium, and when the tape-shaped recording medium is on one of the running paths, the tape reel is rotated. The tape-shaped recording medium is driven to run at high speed by transmitting the rotational torque of the rotating body for high-speed tape running to the body and rotating the rotating body for driving the tape/reel. Even when the route is changed from a longer running route to a shorter running route, the rotational torque of the rotating body for high-speed tape running is transmitted to the rotating body for driving the tape/reel. By rotating the rotating body, the slack of the tape-shaped recording medium caused by changing the running route at this time is absorbed, and the running route of this tape-shaped recording medium is changed from the longer running route to the shorter running route. The rotational torque applied to the tape reel driving rotating body when changing to the running path is made lighter than the rotational torque when driving the tape at high speed. According to this, the running path of the tape-shaped recording medium is changed to the running path. It has at least two types of tape sagging, which occurs when the running route is changed from a longer running route to a shorter running route. As a recording or reproducing device that absorbs slack by using a high-speed tape running drive system, it has a very simple structure and does not cause any strain on the tape when absorbing slack in the tape due to changes in the tape running route. Without a doubt,
Moreover, it is completely free from disadvantages such as the complicated configuration of the reel drive mechanism system or the complicated configuration of the control circuit for the drive motor, and is therefore extremely useful for this type of device. It is something.

As an example, a tape fast return roller, which serves as a rotating body for tape running at high speed, is pressed against a tape supply reel stand with a pressure that is weaker than that used during tape fast return, and the tape is wound with a light torque on the supply reel stand. An example was shown in which tape slack is absorbed during tape unloading by rotating the tape in the direction of the tape winding reel stand. In addition, the slack in the tape during tape unloading is absorbed by pressing the tape with a pressure that is weaker than that used during tape fast forwarding and rotating the take-up reel stand with a light torque in the tape winding direction. Alternatively, the tape can be rolled by pressing the tape fast-forwarding roller and the tape fast-returning roller against the tape take-up reel stand and the tape supply reel stand, respectively, with a weak pressing force and rotating each with a light torque in the tape winding direction. - It goes without saying that it is also possible to change the direction of tape slack during unloading. That is, to explain such a modification based on the configuration of the illustrated embodiment, first,
In the former case, as shown in FIGS. 2 and 3, the fast-forwarding roller stand 39 supporting the fast-forwarding roller 40 is replaced by a fast-returning roller stand 41 shown in the figures, which engages with the control lever 37 for absorbing tape slack. 41a
and a lever means equipped with an engaging part 41b for the play lever 46, while the fast return roller stand 41 is a lever means not equipped with these engaging parts 41a, 41b like the fast forward roller stand 39 shown in the figure. As a result, when unloading the tape, the spring 3 applied to the control lever 37
At 8, the rapid feed roller stand 3 is moved via the lever 37.
9 is rotated clockwise against its spring 44, thereby causing the fast forward roller 40 to rotate against the spring 38.
In the latter case, the fast return roller stand 41 may be configured as shown in the figure. ,
On the other hand, by deforming the fast-forwarding roller stand 39 as described above, and when unloading the tape, the spring 38 applied to the control lever 37 moves the roller stands 39 and 41 through the lever 37.
are both moved clockwise against the respective springs 44 and 45, and as a result, the fast-forwarding roller 40 is brought into pressure contact with the tape take-up reel stand 29 by the spring 38 with a pressure contact force that is weaker than in the tape fast-forwarding mode. In addition, the fast return roller 42 may be brought into pressure contact with the fast forward roller 40 and the tape supply reel stand 28 by the spring 38 with a pressure force that is weaker than that in the tape fast return mode.

As mentioned above, the above-mentioned modifications can be easily made in light of the configuration of the embodiment, and therefore, it goes without saying that the present invention is not limited to the configuration of the embodiment only. Various modifications can be made within the scope of the gist.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall appearance of an embodiment of the present invention, and FIG. 2 is a mechanism showing details of the internal mechanism of the device shown in FIG. 1 with the tape guide drum and intermediate board removed. In the figure, the state corresponds to a state in which a recording or reproducing operation is in progress. Figure 3 is an enlarged view of the main parts of the configuration shown in Figure 2, especially the operating system.
In the figure, this corresponds to a stopped state. FIG. 4 is a diagram showing details of the configuration on the intermediate board with the tape guide drum and intermediate board attached to the configuration shown in FIG. Indicates the condition. FIG. 5 is a perspective view showing the details of the structure of the tape pulling means on the right side, where a shows the assembled state and b shows the disassembled state. FIG. 6 is a schematic diagram for explaining the dimensional relationship between the guide groove for the right tape pull-out means and the pinch roller on the intermediate board, especially the branch point and the base of the tape pull-out means; The figure is a perspective view showing the details of the configuration of the left tape pull-out means.
Similarly, the state after assembly is shown. Figure 8 shows A in Figure 4 in the tape unloading state.
- A view, FIG. 9 is a B-B view in FIG. 4,
FIG. 10 is a circuit connection diagram showing the configuration of the loading motor control circuit. C...Tape cassette, C'...Cassette opening, T...Magnetic tape, 9...Guide drum,
113a, 113b...Rotating magnetic head, 92R
~100R, 92L~100L... Components of a pair of tape pull-out means, 11, 12... Loading ring, 12b... Control pin, 19... Loading motor, 28, 29... Tape reel drive rotation body (tape supply reel stand and tape take-up reel stand), 115... Reel drive motor (capstan motor), 40, 42...
...Rotating body for high-speed tape running (tape fast forward roller and tape fast return roller), 39...Fast forward roller stand, 41...Fast return roller stand, 44,
45...Roller stand return spring, 4...Operation key for tape fast forwarding and quick reversal, 51...Lever for tape fast forwarding and fast reversing, 53...Tape fast forwarding lever, 51a, 53a...Spring pieces for pressing the roller stand, 37...Tape slack absorption control lever, 3
8... Roller pressure spring for absorbing tape slack, 3
...Play key, 46...Play lever.

Claims (1)

[Claims] 1 The running path of the tape-shaped recording medium is set at least 2 times.
transmitting the rotational torque of the rotating body for high-speed tape running to the rotating body for tape reel driving to rotate the rotating body for tape reel driving in a state where the tape-shaped recording medium is on one running path; Therefore, in a recording or reproducing apparatus that drives a tape-shaped recording medium to run at high speed, even when changing the running route of the tape-shaped recording medium from a longer running route to a shorter running route, the rotation for high-speed running is By transmitting the rotational torque of the body to the tape/reel driving rotating body and rotating the tape/reel driving rotating body, the slack of the tape-shaped recording medium caused by the change in the traveling path at this time is absorbed. At the same time, when changing the running path of the tape-shaped recording medium from a longer running route to a shorter running route, the rotational torque applied to the tape/reel driving rotating body is adjusted to the high speed running of the tape. A recording or reproducing device characterized by having a rotational torque lighter than that during driving.