JPH0550065B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention involves winding and running a magnetic tape around a tape guide drum to which a rotating magnetic head is attached to bring the rotating magnetic head into sliding contact with the magnetic tape. Regarding a magnetic recording and reproducing device that records and reproduces predetermined information signals such as signals, in particular, the tape is wound around a tape guide drum and runs, and is wound on a predetermined tape running path where predetermined operations such as recording and reproducing can be performed. After unwinding the magnetic tape from the tape guide drum, the other tape guide means including the tension regulator are returned to the tape position and the magnetic tape is pulled back toward the tape loading section. It is.

[Background technology and problems]

The magnetic tape used in this type of magnetic recording and reproducing device is wound around a predetermined tape running path by being guided by a tape guide and folded back in a complicated manner. Since the tape is wound over a range of 100 to 100 ft, if the tape is left in the loading state for a long time while being wound on a predetermined tape running path around the tape guiding drum, it easily sticks to the tape guiding drum. This results in a sticky phenomenon.

By the way, in conventional magnetic recording and reproducing apparatuses of this kind, when performing an unloading operation in which the magnetic tape in the loading state is pulled back toward the tape loading section, the magnetic tape is wound around a tape guide drum. It is configured to rotate or move tape guide means such as a loading ring which operates as shown in FIG.

In the case where the tape guide means such as the loading ring and the tension regulator are operated all at once to unload the magnetic tape in the loading state, the magnetic tape is moved to the tape guide drum as described above. If the magnetic tape is stuck, the unloading operation is completed without the magnetic tape remaining on the tape running path and being pulled back into the tape cassette and wound. If the tape cassette is removed from the tape loading section in this state, the magnetic tape may be damaged and accidents such as cutting may occur.

[Purpose of the invention]

Therefore, the present invention provides an unloading operation in which even if a phenomenon such as the magnetic tape sticking to the tape guide drum occurs, the magnetic tape can be reliably peeled off from the tape guide drum without causing damage. This was proposed for the purpose of providing a magnetic recording/reproducing apparatus which can achieve the same advantages as described above and also simplify the loading mechanism.

[Means to achieve the purpose]

In order to achieve the above-mentioned object, the magnetic recording and reproducing apparatus according to the present invention includes a tape guide drum having a rotating magnetic head attached thereto, and a magnetic tape that is rotatably operated by a rotation drive means and is attached to the outer peripheral surface of the tape guide drum. a loading ring for winding the
A tape guide means including a tension regulator that pulls out the magnetic tape from the tape mounting section side to a predetermined tape running path, a loading lever mechanism that moves and operates the tape guide means, and an unloading mechanism that commands unloading. an operating means; and a power switching means for switching and transmitting the power of the rotational drive means to the loading ring and the loading lever, the rotational drive means being driven by the operation of the unloading operation means; The loading ring is rotated by the rotary drive means to unwind the magnetic tape from the tape guide drum, and following the unwinding of the magnetic tape from the tape guide drum, the power switching means The power of the rotational drive means is transmitted to the loading lever mechanism to operate the loading lever mechanism, and the loading lever mechanism moves the tape guide means to the return position, thereby winding the tape onto a predetermined tape running path. The magnetic tape is pulled back toward the tape loading section.

[Effect]

In the magnetic recording and reproducing apparatus according to the present invention, at the time of unloading, the loading ring is first rotated to unload the magnetic tape from the tape guide drum, that is, to unwind the magnetic tape from the tape guide drum. It will be done.
Thereafter, the loading lever mechanism is operated to unload the tape guide means, that is, to move the tape guide means to the return position.

When unloading the magnetic tape to unloading the tape guide means, the power switching means switches and transmits the power of the rotational drive means from the loading ring side to the loading lever mechanism side.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the magnetic recording and reproducing apparatus according to the present invention has a magnetic tape 1 pulled out from a tape cassette 3 mounted in a tape mounting section, and a magnetic tape 1 on the outer peripheral surface of the tape cassette 3.
A tape guide drum 2 is provided which is wound in a U-shape over a range of more than 100 degrees. This tape guide drum 2 consists of an upper drum that is rotationally driven by a drum drive motor and a fixed lower drum. Alternatively, a rotating magnetic head for reproduction is attached. A loading ring 5 is rotatably provided around the outer periphery of the tape guide drum 2. The loading ring 5 guides the magnetic tape 1 pulled out from the tape cassette 3 so that it is wound around the outer circumferential surface of the tape guide drum 2. . This loading ring 5 includes a plurality of guide rollers 4 installed on the upper surface, a guide roller 7 installed at the tip of a rotating arm 6 rotatably supported, and a chassis board 8. A pinch roller 10 is provided which, together with a capstan 9 which is installed in an erect manner, pinches the magnetic tape 1 and causes the magnetic tape 1 to travel at a constant speed. and,
The loading ring 5 is rotatably operated by a planetary gear mechanism 12 driven by a drive motor 11 for loading operation, and the magnetic tape 1 stretched around each of the guide rollers 4 and 7 is guided to the tape guide drum 2. It works like a winding motion.

On the side facing the tape guide drum 2, there is formed a cassette mounting section into which a tape cassette 3 is mounted, and this cassette mounting section holds the mounted tape cassette 3 in a predetermined position, and the mounted tape cassette 3 is held at a predetermined position during ejection. A cassette holder is provided which operates to raise and return the loaded tape cassette 3 to the cassette insertion/ejection opening side of the main body of the apparatus. This cassette loading section is provided with a pair of reel stands 13 and 14, and the tape cassette 3 has a tape supply reel 15 on which the magnetic tape 1 is wound and a tape take-up reel 1.
6 are fitted and mounted on the corresponding reel stands 13 and 14, respectively.

Between the tape guide drum 2 and the cassette mounting section, there is a roller which is operated to reciprocate by a planetary gear mechanism 12 along the front opening side, which is the side from which the magnetic tape 1 of the tape cassette 3 is mounted. A loading lever mechanism including a loading lever 17 is provided. The loading lever 17 that constitutes this loading lever mechanism includes a first lever 18 that is approximately L-shaped and a second lever 19 that is straight rod-shaped.
One end of the second lever 19 is superimposed on the lower surface of the stepped portion 21 which is bulged on one side of the lower surface of the horizontal rod portion 20 of the first lever 18. The levers 18 and 19 are integrally connected by a connecting pin 22 and a fixing screw 23. The loading lever 17 configured in this manner has an elongated hole 25 formed with the longitudinal direction of the vertical rod portion 24 of the first lever 18 as its major axis, and the gear shaft 27 of the planetary gear 26 of the planetary gear mechanism 12 is inserted into the elongated hole 25 and engaged. a support pin planted from the chassis base plate 8, with elongated holes 28 and 29 bored in the longitudinal direction of the horizontal rod portion 20 of the first lever 18 and the longitudinal direction of the second lever 19, respectively; 31,
The support pins 31 and 32 are guided through the elongated holes 28 and 29 by the planetary gear mechanism 12 to reciprocate in the horizontal direction. Further, the second lever 19 constituting the loading lever 17 has a pair of guide shafts 3.
3, 34 are planted, and these guide shafts 33, 34
A folding guide operating lever 35 is attached which is operated to move a folding guide mechanism which will be described later. The folding guide operating lever 35 is slidable within the range of the elongated holes 36, 37 by inserting the guide shafts 33, 34 through elongated holes 36, 37, which are formed with the long axis extending in the longitudinal direction of the lever 35. It is attached so as to overlap the second lever 19, and has a notch hole 39 for inserting a spring into which a coil spring 38 is inserted approximately in the center thereof. A projecting piece 40 into which one end of the coil spring 38 is inserted and engaged is provided in the notched hole 39, and a protruding piece 40 is formed by cutting and bending the middle part of the second lever 19. 41 faces the protruding piece 40, one end of the coil spring 38 is inserted into and engaged with the protruding piece 40, and the other end is pressed and supported by the raised piece 41 and inserted. Therefore, the folding guide operating lever 3
5 is biased toward the distal end of the loading lever 17 under the elastic force of the coil spring 38 .

Further, a sub-loading lever 42 is attached to the folding guide operating lever 35 via a pair of guide shafts 33 and 34 that are installed on the second lever 19 of the loading lever 17 so as to overlap with the folding guide operating lever 35. Similarly to the folding guide operation lever 35, this sub-loading lever 42 also has elongated holes 43, 44 bored in the longitudinal direction of the sub-loading lever 42, with long diameters extending from the guide shaft 33,
34 and is slidably attached within the range of the elongated holes 43 and 44, and approximately in the center thereof is a coil spring 38 for escape, which is inserted into the notch hole 39 of the folding guide operation lever 35. long hole 4
5 is bored, and a locking piece 46 is provided at the end of the loading lever 17 facing the first lever 18.
This locking piece 46 is bent so that it hangs down.
The tension spring 48 is tensioned between the locking pieces 47 that are bent to stand up on the side of the middle part of the second lever 19 on the one end side of the loading lever 17. Deing lever 17
is biased toward the first lever 18 side.

A tension regulator operating lever 49 is slidably attached to the lower surface of the distal end side of the sub-loading lever 42 . This tension regulator operating lever 49 includes a guide pin 51 that is crimped into a through hole bored at the tip of the sub-loading lever 42, and a protrusion 52 that protrudes from the side of the substantially central portion of the sub-loading lever 42.
The guide pin 5 is caulked into the through hole drilled in the
3, the tension regulator operating lever 4
Elongated holes 54, 5 formed with the long axis in the longitudinal direction of 9
5, and the bent piece 56 is formed by bending the tip side of a protruding piece protruding laterally from the tip of the sub-loading lever 42 so as to hang down, and the tension regulator operating lever. The sub-loading lever 49 is attached by being biased toward the distal end side of the sub-loading lever 42 by a spring 58, which is tensioned across a locking hole 57 formed in the middle of the sub-loading lever 49. A stopper 50 is provided at a position facing the tip of the tension regulator operating lever 49 to restrict the movement position of the operating lever 49 during the loading operation. The tension regulator operating lever 49 is attached between the distal end and the side of the sub-loading lever 42, so the distal end thereof is bent into an L-shape. Further, at the midway side of the tension regulator operating lever 49, the magnetic tape 1 is pulled into the tape cassette 3 in response to the reciprocating operation of the tension regulator operating lever 49. a mode selection lever that is rotatably operated from a first position in an unloading state where the tape is pulled out to a second position in a loading state pulled out to the side of a predetermined tape running path and is slidably operated in accordance with the operating mode of the device; an arm shaft 6 on which a tension regulator rotating arm 61 that is rotated by a tension regulator 60 and variably controls the position of the tension regulator 59 is supported;
An arm shaft attachment piece 63 on which the arm 2 is erected is provided in a protruding manner. The arm shaft 62 is mounted on the arm shaft mounting piece 63 by caulking its base end into a mounting hole formed in the arm shaft mounting piece 63. The tension regulator rotation arm 61 attached to this arm shaft 62 is formed in a substantially dogleg shape, and is attached so that a cylindrical boss 64 is crimped through a through hole bored in the approximate center. The boss 64 is inserted into the arm shaft 62 and rotatably attached to the arm shaft 62. A coil spring 65 is wound around the boss 64 . This coil spring 65 has one end 65a locked to one side of the tension regulator operating lever 49, and a U-shaped locking portion 65b provided at the tip of the other end to one side of the tension regulator rotation arm 61. The tension regulator rotating arm 61 is urged to rotate in the clockwise direction in FIG. Note that the arm shaft mounting piece 63 has a locking stand-up formed at the tip thereof with a cutout step portion 67 that engages with a locking step portion 66 provided on one side of the midway portion of the tension regulator rotating arm 61. Tension regulator rotating arm 6 provided with a piece 68 and biased to rotate by a coil spring 65
The rotation biasing position of 1 is regulated.

Further, a rack plate 69 is provided along the guide drum 2 side of the folding guide operating lever 35 and the sub-loading lever 42, and is slidably operated by the folding guide operating lever 35 to move the folding guide mechanism. There is. This rack plate 69 is supported by inserting support pins 73, 74 set in the chassis base plate 8 through long holes 71, 72 whose major diameters are in the longitudinal direction of the rack plate 69. The movement operation is performed within the specified range. On the side of the rack plate 69 facing the folding guide operating lever 35 and the sub-loading lever 42, a pressing piece 75 and the sub-loading lever 42 are formed to rise up on the tip side of the folding guide operating lever 35 during the movement operation. An operating piece 77 is protrudingly provided which selectively abuts a pressing piece 76 which is provided so as to hang down in the middle of the holder, and is pressed by these pressing pieces 75 and 76. That is,
When loading the magnetic tape 1, the operating piece 77 is pressed by the pressing piece 75 of the folding guide operating lever 35, and the rack plate 69 is moved in the direction of arrow A in FIG. , sub loading lever 4
The operating piece 77 is pressed by the second pressing piece 76 and moved in the direction of arrow B in FIG. A rack gear 78 is engraved on the side of the rack plate 69 facing the operation piece 77, and is integrally attached to the base end of a first folding guide lever 79 constituting the folding guide mechanism. The rotary gears 80 are in mesh with each other.

By the way, the folding guide mechanism constituting the device of the present invention is arranged so as to extend on one side of the guide drum 2, and has a first folding guide lever 79 and a second folding guide lever 81. The second folding guide lever 81 has its base end rotatably connected to the distal end of the first folding guide lever 79 via a pivot pin 82, and the first folding guide lever 81 rotates around this pivot pin 82. It can be folded back freely with respect to the folding guide lever 79. The first folding guide lever 79 is pivotally supported by a support pin 83 that is mounted on the chassis base plate 8 integrally with the rotary gear 80.
It is rotated by following the rotation of . Further, a guide pole 84 around which the magnetic tape 1 is wound is installed at the tip of the second folding guide lever 81, and a guide pole 84 around which the magnetic tape 1 is wound is installed at the middle part of the guide pole 84.
A guide pin 86 is provided that engages with a folded guide lever guide groove 85 provided in the chassis base plate 8 that guides the moving position of the lever. Note that this guide pin 86 is movable within the range of the elongated hole 87. Therefore, the second folding guide lever 8
When the first folding guide lever 79 is rotated, the guide pin 86 is guided to the folding guide lever guide groove 85 and moved. The magnetic tape 1 moves from the magnetic tape 1 to one side of the guide drum 2 so as to extend far away from the cassette mounting portion, and operates to guide the magnetic tape 1 onto the circumferential surface of the guide drum 2. Also, at a side position of the guide drum 2, the second folded guide lever 81
A stopper member 88 for regulating the extending position of the second folding guide lever 81 is provided at a position opposite to the tip of the extended position. On one side of this stopper member 88, a guide pole 8 is installed at the tip of the second folding guide lever 81.
When the second folding guide lever 81 is extended along one side of the guide drum 2 so as to load the magnetic tape 1 onto a predetermined tape running path. By engaging one end of the guide pole 84 with the engagement groove 89, the extending position of the second folding guide lever 81 is regulated.

In addition, the tension regulator rotation arm 61
Tension regulator 5 variably operated by
As shown in FIG. 1, reference numeral 9 is disposed on the side of the cassette mounting section on the magnetic tape drawer side, which is the distal end side of the loading lever mechanism, and is constructed as shown in FIG. This tension regulator 59
The tension regulator arm 92 has a base end rotatably supported on a support column 91 that is erected on the chassis base plate 8. This tension regulator arm 92 has a support column 193 planted on the tip side, and a guide pin 95 is attached to the tip of the support column 193, on which the magnetic tape 1 having flanges 194, 194 on both upper and lower sides slides. An elongated hole 96 whose major diameter is in the longitudinal direction is bored in the center. In addition, the tension regulator arm 9
A cam plate 9 with a cam groove 93 is provided on the upper surface side of 2.
4 is attached with screws 195. This cam plate 94 is attached with a cam groove 93 corresponding to the elongated hole 96, and an engaging pin 97 planted on one end of the tension regulator rotation arm 61 is inserted into and engaged with the cam groove 93. Ru. When the tension regulator rotation arm 61 is reciprocated by the tension regulator operation lever 49 operated by the loading lever 17 described above, the engagement pin 97 is moved into the cam groove. 93
The tension regulator arm 92 is rotated about the support column 91 while moving along the axis. In addition, the tension regulator rotation arm 6
An engagement pin 99 that engages with a stepped cam surface 98 formed on one side of the mode selection lever 60 is provided so as to hang down from the other end of the mode selection lever 60, and the tension regulator arm 61 is in the loading state. When the mode selection lever 60 is in the state of being rotated to the second position, the mode selection lever 60 is slid in accordance with the operation mode of the device, so that the cam surface 98 is set to the cam according to any of the operation modes. By engaging the engaging pin 99 at the end, the tension regulator arm 61 is rotated about the arm shaft 62, and the tip of the tension regulator arm 61 is engaged with the engagement pin 99. The engagement position of the dowel pin 97 with the cam groove 93 is moved to rotate the tension regulator arm 92 in accordance with the operation mode. Note that the cam groove 9
3, the base end side of the tension regulator arm 92 is a large diameter part 93a, and the tension regulator rotation arm 61 is formed in this large diameter part 93a.
The engagement pin 97 is loosely fitted.

Further, a locking piece 102 is protruded from one side of the tension regulator arm 92, and the chassis board 8
One end of a connecting member 101 extending from the other end of a tension spring 100 attached to one end is locked, and receives the biasing force of the tension spring 100 as indicated by arrow C in FIG.
It acts to apply a predetermined tape tension to the running magnetic tape 1 in the loading state, and functions as a tension regulator.

The loading lever 17 that drives and operates the loading lever mechanism locks a tape supply reel 15 and a tape take-up reel 16 on which the magnetic tape 1 provided in the tape cassette 3 mounted in the cassette mounting section is wound. A reel lock release lever 106 for releasing the reel lock mechanism 105 is provided in conjunction with the reel lock mechanism 105. This reel lock release lever 106 is formed as a long L-shaped rod, and is provided with elongated holes 109, 110, 111 on the tip side of the horizontal rod 107 and on both upper and lower ends of the vertical rod 108, the long diameter of which is the longitudinal direction of the lever 106. Support pins 112, 113, 114 planted from the chassis board 8
The first lever 18 of the loading lever 17 is fitted with an engaging pin 115 that is inserted into and engaged with the vertical rod 108 and is slidable in the vertical direction in FIG. Cam groove 1
16 is engaged. This cam groove 116 is formed in a stepped shape along the driving direction of the loading lever 17. And loading lever 17
By reciprocating the reel lock release lever 106, the reel lock release lever 106 is moved in the vertical direction in FIG. Further, at the center of the horizontal rod 107 of the reel lock release lever 106, there is a lock pawl mounting piece 12 that supports the reel lock pawls 118, 119 of the reel lock mechanism 105 provided in the tape cassette 3.
An engagement pin 122 is provided which engages with the engagement hole 121 of No. 0, and when the tape cassette 3 is installed, the lock claw attachment piece 120 engages with the engagement pin 122 through the engagement hole 121. When the reel lock release lever 106 is operated to move up and down in FIG. 1, the lock claw attachment piece 120 is also moved up and down accordingly, and the pair of reel lock claws 118 and 119 attached to the tip thereof are operated to open and close. An engaging portion 12 formed on the outer periphery of the flange portions 15a, 16a of the supply reel 15 and tape take-up reel 16
5 into and out of engagement.

By the way, in the device of the present invention, the loading lever 17 and the loading ring 5 are configured so that the planetary gear mechanism 12 driven by one drive motor 11 is configured as described below. Deing Ring 5 is associated. The planetary gear mechanism 12 has a sixth
As shown in FIG. 7 and FIG. 7, a sun gear 126 is inserted through a cylindrical portion 128 of a bracket 127 attached to the chassis base plate 8, and is integrally attached to the tip of a drive shaft 129 that is rotatably supported with respect to the bracket 127. It is arranged to fit properly. This sun gear 12
The driving force transmission gear 1 to which the driving force of the drive motor 11 attached to the chassis board 8 is transmitted is attached to the lower end side of the drive shaft 129 to which the drive shaft 129 is attached.
32 is installed. Therefore, the sun gear 12
6 is rotationally driven in accordance with the drive of the drive motor 11 in the pressure/reverse direction.

Further, the drive shaft 1 to which the sun gear 126 is attached
29, a disk-shaped planet gear mounting plate 133 to which the planet gear 26 is attached is attached to a bulge 134 in the center.
The drive shaft 129 is inserted into the drive shaft 129 through an insertion hole 135 provided in the drive shaft 129 to be rotatably attached. That is, this planetary gear mounting plate 133 has a lower end edge of a bulging portion 134 provided with an insertion hole 135 through which the drive shaft 129 is inserted, and fits into a concave receiving portion provided on the upper end side of the cylindrical portion 128 of the bracket 127. The drive shaft 129 is mounted so as to be slidable and rotatable relative to the drive shaft 129. Furthermore, the above planetary gear mounting plate 1
A ring gear 138 is fitted on the outer circumferential portion of the mounting plate 133 so as to be placed on a flange portion 136 protruding from the lower edge of the outer circumference of the mounting plate 133, and has teeth portions 137 formed on the inner circumferential surface of the upper end thereof. Mounting plate 133
It is rotatably mounted so that it slides against the base. Furthermore, the planetary gear mounting plate 133 includes
A planetary gear 26 is attached to be interposed between the sun gear 126 and the ring gear 138.
This planetary gear 26 is rotatably attached to a gear shaft 27 which is set up by press-fitting a press-fitting part 140 into a fitting hole 139 formed in a planetary gear mounting plate 133, and also connects the sun gear 126 and ring gear 13.
The sun gear 126 is interposed so as to mesh with the teeth 137 of the sun gear 126, respectively, and can revolve around the sun gear 126. Also, a gear shaft 2 that pivotally supports the planetary gear 26 is provided.
On the upper end side of 7, there are two cylindrical rollers 141, 1
42 is rotatably fitted.

In the planetary gear mechanism 12 configured as described above, when the driving force for rotating the sun gear 126 in the clockwise direction (in the direction of arrow P in FIG. 6) is applied from the driving motor 11, the driving force is planetary gear 2
6 as a force that causes the ring gear to revolve in the clockwise direction (direction of arrow Q in FIG. 6).
38 as a rotating force in the counterclockwise direction (direction of arrow R in Fig. 6), and conversely,
Rotate the sun gear 126 in a counterclockwise direction (in Fig. 6,
When a driving force is applied to rotate the planetary gear 26 in a counterclockwise direction (counter-arrow P direction), the driving force is transmitted to the planetary gear 26 as a force that causes it to revolve in a counterclockwise direction (counter-arrow Q direction in FIG. 6). and ring gear 138
is transmitted as a force for rotation in the clockwise direction (in the direction opposite to arrow R in the figure).

The planetary gear 26 of the planetary gear mechanism 12
The loading lever 17 is disposed by fitting the long hole 25 formed in the vertical rod 24 into the roller 141 of the gear shaft 27 . Therefore, as the planetary gear 26 revolves around the sun gear 126, the loading lever 17 is reciprocated over a diameter range around the revolution of the planetary gear 26.

Further, on the upper surface side of the planetary gear mechanism 12,
An operation switching arm 145 is disposed so as to overlap the ring gear 138. The operation switching arm 145 is bent as shown in FIG. 6, and the end of the bent corner is rotatably supported on a support shaft 146 that is set on the chassis base plate 8. A concave-shaped locking portion 147 formed to be open is disposed so as to face the rotation locus of the planetary gear shaft 27 that pivotally supports the planetary gear 26 .
The planetary gear 2 revolving around the locking portion 147
The upper roller 14 fitted to the tip of the gear shaft 27 of No. 6
2 is engaged and locked, the revolution of the planetary gear 26 is restricted. Note that the locking portion 147
The gear shaft 27 of the planetary gear 26 that rotates in the normal direction engages and locks the first locking portion 47a that restricts the normal rotation of the planetary gear 26, and the gear shaft 27 of the planetary gear 26 that rotates in the reverse direction engages. A second locking portion 147b that locks and restricts reverse revolution of the planetary gear 26 is provided. Further, the other end of the operation switching lever 145 has an engagement recess 149 formed on the outer circumferential surface of the ring gear 138, which is constructed by fitting a roller to a support shaft 148 that hangs down here. An engaging member 150 that engages is provided. That is, the operation switching arm 145 is rotatably biased by the spring means 151 in a direction in which the engagement member 150 comes into contact with the outer peripheral surface of the ring gear 138, so that the ring gear 138 rotates and the engagement member 1 is rotated.
When the ring gear 50 reaches a position corresponding to the engagement recess 147 of the ring gear 138, it engages with the ring gear 138, thereby restricting the rotation of the ring gear 138.

Further, the ring gear 13 of the planetary gear mechanism 12
A gear portion 152 is also formed on the lower end side of the outer peripheral surface of 8,
The loading ring 5 is connected to this gear portion 152 via a connecting gear mechanism 153.

By the way, the loading ring 5 is small in size and requires a small installation space, and in order to wind the magnetic tape 1 around the tape guide drum 2 over a range of 180 degrees or more, the loading ring 5 is equipped with a planetary gear mechanism 1.
It is attached at an angle with respect to the chassis base plate 8 on which the parts 2 and the like are attached. In this way, the chassis board 8
The loading ring 5 and the ring gear 138 of the planetary gear 26, which are installed obliquely with respect to the surface, are the eighth
They are connected via a connecting gear mechanism 153 configured as shown in FIGS. That is, as shown in FIGS. 8 and 9, a pair of first and second bevel gears 155 and 156 that mesh with each other are provided. These gears 155 and 156 are connected to the gear shaft 1
The gear shafts 1 are mounted so that the planes formed by the loading rings 57 and 158 are perpendicular to the chassis base plate 8, which is the mounting plane of the loading ring 5.
The loading ring 5 is installed so that a line L ₁ connecting the loading ring 57 and 158 is parallel to a line L ₂ indicating the maximum inclination direction of the loading ring 5 with respect to the chassis base plate 8. The gear shaft 157 of the first domed gear 155 mounted in this manner is perpendicular to the plane of the loading ring 5, and the gear shaft 158 of the second domed gear 156 is perpendicular to the surface of the chassis board 8. That's enough. Therefore, by attaching the first and second spur gears 159 and 160 to each of the gear shafts 157 and 158, respectively, it is possible to connect the loading ring 5 and the ring gear 138 whose attachment planes are inclined to each other. That is, the first spur gear 159 is meshed with the spur tooth gear portion 161 formed on the outer peripheral surface of the loading ring 5, and the spur tooth gear portion 138 of the ring gear 138 is fitted with the first spur gear 159. The loading ring 5 and the planetary gear mechanism 12 are connected to each other by a connecting gear mechanism 153 configured such that a second spur gear 159 meshes with a mating spur tooth intermediate gear 162.

By connecting the loading ring 5 and the planetary gear mechanism 12 with such a connecting gear mechanism 153, even if the loading ring 5 and the planetary gear mechanism 12 are installed at an angle to each other,
It is only necessary to provide spur toothed gear portions 161 and 138 that are easy to form, and the loading ring 5 and planetary gear mechanism 12 can be easily formed with high dimensional accuracy.
Furthermore, the connecting gear mechanism 153 can also be made small and simple in structure.

Furthermore, the planetary gear 26 of the planetary gear mechanism 12
During the orbit of the cassette, as shown in FIG.
An engaging pawl 166 is provided at the tip of a cassette lock release lever 165 that unlocks the cassette holder that holds the tape cassette 3 in a predetermined position in the cassette mounting section.
Then, the cassette lock release lever 165
When the planetary gear 26 revolves to unload the magnetic tape 1 into the tape cassette 3, it is pressed by the gear shaft 27 of the planetary gear 26 to release the lock of the cassette holder. Operate. This cassette holder unlocking operation must be performed after the unloading operation of the magnetic tape 1 is completed, so after the unloading operation is performed, the planetary gear 26 is further driven and the cassette lock release lever 165 is driven. The cassette lock release lever 165 is in such a relationship that it can be pressed and operated.
is placed.

The operations of loading the magnetic tape 1 onto a predetermined tape running path and unloading operation of pulling the magnetic tape 1 loaded onto the predetermined tape running path into the tape cassette 3 in the apparatus of the present invention configured as described above are carried out. This will be explained below.

First, in a starting state in which the tape cassette 3 is installed in the cassette mounting section and the loading operation of the magnetic tape 1 is started, the planetary gear 26 of the planetary gear mechanism 12 is positioned at the rightmost side of the ring gear 138 as shown in FIG. The loading lever 17 is located at such a position that a line connecting the gear shaft 129 of the sun gear 126 and the gear shaft 27 of the planetary gear 26 is parallel to the direction in which the loading lever 17 extends. Further, the engagement member 150 of the operation switching arm 145 that switches the operation of the planetary gear mechanism 12 is connected to the ring gear 138.
The ring gear 13 is engaged with the engagement recess 149 of the ring gear 13.
8 is placed in a state where rotation is restricted. At this time, since the planetary gear 26 that reciprocates the loading lever 17 is located at the rightmost position of the ring gear 138, the loading lever 17 is also located at the rightmost position as shown in FIG. Therefore, the loading lever mechanism, which is reciprocated by the loading lever 17, is also moved to the right in the direction of arrow B, as shown in FIG. That is, the first loading lever 17
The sub-loading lever 42 is in a state of being moved in the direction of arrow B, which is the right side in FIG. The first and second folding guide levers 79 and 81 of the folding guide mechanism, which are moved in the direction of arrow B on the right in FIG. The guide pin 86 is in the folded state.
is located on the base end side of the folding guide lever guide groove 85, and the guide pole 84 provided at the tip of the second folding guide lever 81 is located along the front opening side of the tape cassette 3. It is located so as to face the inner surface side, which is the third side. In addition, the sub loading lever 42
Since the sub-loading lever 42 has been moved to the right in FIG. Similarly, arrow B on the right in Figure 3
The tension regulator rotating arm 61, which is pivoted to the tension regulator operating lever 49 via an arm shaft 62, is moved in the direction of the arrow B on the right in FIG. The tension regulator arm 92 is in the state where it has been moved to the above position, and the engagement pin 97 planted at one end of the tension regulator rotation arm 61 is engaged with the engagement pin 97 via the cam groove 93. By moving the tension regulator operating lever 49, the front opening of the tape cassette 3 is rotated about the support column 91 in the direction of arrow D in FIG. 3, and the tension regulator arm is rotated. The tape cassette 3 of the magnetic tape 1 has a guide pin 95 provided at the tip of the magnetic tape 1 located along the front opening side of the tape cassette 3.
It is located facing the inner side, which is the side. Furthermore, when the loading lever 17 is located at the rightmost side as shown in FIG. When the lever 18 is engaged with the upper cam surface 116b that is continuous with the inclined cam surface 116a on the left side in FIG. It will be destroyed. Since the reel lock release lever 106 is in the state of being pulled up toward the tape guide drum 2 side, the lock pawl attachment piece 120 inside the tape cassette 3 is also pulled up in the same way, and the pair of reel lock pawls 118 and 119 attached to the tip of the lock pawl attachment piece 120 is also pulled up. 1 opens its legs and engages with each engaging portion 125 of the tape supply reel 15 and the tape take-up reel 16, and each of the reels 1
5 and 16 are kept locked. The loading ring 5 is also placed in a rotational position prior to the loading operation such that the pinch roller 10 and guide rollers 4 and 7 are located on the front side of the tape cassette 3, as shown in FIG. When the tape cassette 3 is mounted and held in the cassette mounting section as described above and the loading operation can be started, operate the start switch provided on the device,
When the drive motor 11 is driven in the normal rotation direction, the drive force of the drive motor 11 is transmitted to the drive force transmission gear 132 via the coupling gear mechanism 7, and the drive force is transmitted to the sun gear 12.
6 is driven in the forward direction of arrow P in FIG. At this time, the engagement recess 14 of the ring gear 138
9 is engaged with the engagement member 150 of the operation switching arm 145, the ring gear 138 is kept inactive, and only the planetary gear 26 starts to revolve in the positive revolution direction in the direction of the arrow Q in FIG. do. When the planetary gear 26 revolves in the positive revolution direction, the gear shaft 27 of the planetary gear 26 moves in the vertical direction in FIG. The loading lever 17 is moved in the forward direction of arrow A in FIG. The loading lever 17 is at the arrow A above.
When the reel lock release lever 106 starts to move forward in the above direction, the engagement pin 115 of the reel lock release lever 106, which was engaged with the upper cam surface 116b of the cam groove 116 of the loading lever 17, moves along the inclined cam surface 116a, and the above-mentioned The reel lock release lever 106 is gradually moved in the direction D in FIG. 3, and the lock claw attachment piece 120 in the tape cassette 3 is moved in a direction away from the tape supply reel 15 and tape take-up reel 16, and the lock claw is attached. A pair of reel lock pawls 118 and 119 attached to piece 120 are operated to close. When the engaging pin 115 reaches the lower cam surface 116c of the cam groove 116, the reel lock claws 118, 119 are disengaged from the engaging portions 125 of the respective flanges 15a, 16a, and the reel lock is released, and the tape supply reel 15 is released. And the tape take-up reel 16 can rotate freely. When the reel lock of the tape cassette 3 is released in this way, the sub loading lever 42,
The folding guide operating lever 35 and the tension regulator operating lever 49 are further moved forward in the direction of arrow A in FIG. 3, together with the loading lever 17.

By the way, the reel lock release operation of the tape cassette 3 and the above-mentioned levers 35, 42, 49
The sequential forward movement of the sub loading lever 4
2 is the second lever 19 of the loading lever 17
Elongated holes 43, 44 are formed in the guide shafts 33, 34 planted in the
Since the loading lever 17 is slidably attached to the loading lever 17 through the
The sub-loading lever 4 moves forward until it reaches a position where it no longer receives the biasing force of the tension spring 48.
2 is placed in an inactive state.

Then, when the planetary gear 26 further rotates forward and the loading lever 17 is moved forward until the engagement pin 115 of the reel lock release lever 106 reaches the lower cam surface 116c of the cam groove 116, this first
The guide shafts 33 and 34 installed in the second lever 19 of the loading lever 17 are located at the left side in FIG. It begins to press on both sides. Further, the guide pins 51 and 53 of the sub-loading lever 42 are provided with elongated holes 5.
The tension regulator operating lever 49, which is movably attached to the sub-loading lever 42 via the guide pins 51 and 55 and is attached to the sub-loading lever 42 while being biased by a tension spring 58, is also connected to the elongated hole 54 by the guide pins 51 and 53. , 55 in FIG. 3 is now pressed. Therefore, the sub-loading lever 42, the folding guide operating lever 35, and the tension regulator operating lever 49 move forward together with the loading lever 17. These levers 42, 35, 49 are integrated with the loading lever 17 and are connected to the arrow A in FIG.
When the folding guide operating lever 35 starts to move forward in the direction, the pressing piece 75 of the folding guide operating lever 35 and the operating piece 77 of the rack plate 69 come into contact with each other, and the rack plate 69 is pressed by the folding guide operating lever 35, and the elongated hole 71, Loading lever 1 is guided by support pins 73 and 74 with 72 planted on chassis base plate 8.
The movement operation is performed in the direction of arrow E in FIG. 3, which is the same direction as the forward movement direction of 7. When the rack plate 69 is moved in this way, the rack gear 78 of the rack plate 69
The first portion constituting the folding guide mechanism meshed with the
A rotating gear 80 attached to the base end of the folding guide lever 79 is rotated, and the first folding guide lever 79, which is integral with the rotating gear 80, is rotated in the direction of arrow F in FIG. When this first folding guide lever 79 is rotated, this lever 7
The second folding guide lever 81 rotatably connected to the tip of the folding guide lever 81 has a folding guide lever guide groove 85 in which a guide pin 86 is provided in the chassis base plate 8.
The first folding guide lever 7 is guided by the
Following the rotation of the first folding guide lever 79, the guide lever 79 moves along one side of the guide drum 2 and extends away from the cassette mounting section. In this way, the second folding guide lever 8
When the magnetic tape 1 moves, the magnetic tape 1 wound around the guide pole 84 erected at the tip of the lever 81 is pulled out from the tape cassette 3 and guided so as to come into sliding contact with the circumferential surface of the tape guide drum 2. Then, when the planetary gear 26 further revolves normally and the loading lever 17 is moved forward until the tension regulator operating lever 49 comes into contact with the stopper 50 and its movement is restricted, the second folding guide lever 81 is the guide pole 84 planted at the tip.
The distal end of the stopper member 88 is press-fitted into the engagement groove 89 of the stopper member 88, and reaches the extended second position, where it is locked as shown in FIG. At this time, the folding guide operating lever 35 is biased in the direction of arrow G in FIG. 10 by the coil spring 38.
The rack plate 69 is pressed and biased by the pressing piece 75 of No. 5 in the direction of the arrow E in FIG. be placed in a state of

As described above, the planetary gear 26 rotates normally to move the loading lever 17 forward in the direction of arrow A in FIG. the first and second folding guide levers 79 to a second position in a loading state extended along one side;
At the same time as this operation of moving the tension regulator 81, the tension regulator 59 is also moved to the first tension regulator 59 in the unloading state.
from the position to the second position in the loading state. That is, as described above, the reel lock of the tape cassette 3 is released, and the loading lever 17 is moved in the direction of arrow A in FIG. 49 is moved together with the loading lever 17, the arm shaft 62 is attached to the tension regulator operating lever 49.
The tension regulator rotating arm 61, which is attached via the tension regulator arm 61, is also moved in the direction of arrow A in FIG. Tension regulator rotation arm 62
When the tension regulator arm 9 is moved as described above, the tension regulator arm 9 is erected at one end of the rotation arm 62.
The engaging pin 97 engaged with the cam groove 93 of No. 2 moves from the distal end side of the cam groove 93 to the proximal end side of the unloader with its distal end positioned on the front opening side of the tape cassette 3. The tension regulator arm 92 is rotated from the first position in the loading state to the second position in the loading state where it rises along the side of the device. The magnetic tape 1 is pulled by a guide pin 95 at the tip of the tension regulator arm 92 to a predetermined tape running path.

That is, in the present invention, the loading lever mechanism is operated by the forward movement of the loading lever 17 due to the positive revolution of the planetary gear 26, and the folding guide mechanism and the tension regulator 59 are operated.
are moved from the first position in the unloading state to the second position in the loading state, and the first half of the loading operation in which the magnetic tape 1 is pulled out from the tape cassette 3 to a predetermined tape running path is completed.

When the folding guide mechanism and the tension regulator 59 are moved from the first position to the second position as described above, the planetary gear 26 rotates normally in the direction of the arrow Q in FIG. As shown, the ring gear 138 rotates to the left, and the gear shaft 27 engages with the first locking portion 147a of the locking portions 147 of the operation switching arm 145. Then, although the planetary gear 26 comes to be restricted from normal revolution by the first locking portion 147a, it still tries to continue normal revolution and presses the operation switching arm 145.
is rotated counterclockwise in the direction of arrow S in FIG. 10 about the support shaft 146 against the biasing force of the spring means 151. Then, the engagement member 150 of the operation switching arm 145 is disengaged from the engagement recess 149 of the ring gear 138, the rotation restriction of the ring gear 138 is released, and the ring gear 138 begins to rotate forward in the direction of arrow R in FIG.

Then, when the normal revolution of the planetary gear 26 is restricted and only the ring gear 138 rotates in the normal direction in the direction of arrow R in FIG. The loading ring 5 is rotated forward in the direction of arrow T in FIG. When the ring gear 138 rotates forward in the direction of arrow R in FIG. 11 and the loading ring 5 rotates forward, the guide roller 4 provided on the loading ring 5,
The magnetic tape 1 is wound around the magnetic tape 7 and the pinch roller 10, and is drawn out and wound around the circumferential surface of the tape guide drum 2. Note that during the forward rotation of the loading ring 5, the rotating arm 6 provided with the guide roller 7 is rotated outward from the loading ring 5, and pulls out the magnetic tape 1 to the side of the loading ring 5. . Then, when the ring gear 138 rotates over a range of about 330 degrees in the direction of arrow R in FIG.
As shown in FIG. 1, the loading operation of the magnetic tape 1 onto a predetermined tape running path is completed, and the drive motor 11 is stopped and the drive of the planetary gear mechanism 12 is stopped. However, the ring gear 138 also stops. When this loading operation is completed, the loading ring 5 is locked by the locking means provided on the chassis board 8 side, and the state of loading the magnetic tape 1 on the predetermined tape running path is maintained. Here, by operating operation buttons such as a recording/reproducing operation button provided on the apparatus, recording/reproduction etc. can be performed using the rotating magnetic head attached to the tape guide drum 2.

In addition, in the apparatus of the present invention, as in the conventional magnetic recording and reproducing apparatus, a magnetic head 170 for recording and reproducing audio signals and a magnetic head 170 for recording and reproducing reference signals are placed in sliding contact with the magnetic tape 1 running on a predetermined tape running path. A magnetic head (CTL head) 171 and an erase head 172 are provided.

By the way, the tension regulator 59 used in the device of the present invention can be used with the magnetic tape 1 as described above.
In the loaded state, the device is rotated in accordance with the operation of the mode selection lever 60 as described above, and is moved to a position corresponding to the operation mode of the device.
The apparatus is configured to apply tape tension to the magnetic tape 1 corresponding to each operation mode of the apparatus of the present invention. That is, the mode selection lever 60, which is moved according to the recording/reproducing operation mode, stop mode, fast forward/rewind operation mode, and loading operation mode of the apparatus of the present invention, is connected to the loading lever 17 as shown in FIGS. 1 and 13.
The loading lever 17 is provided along the side of the cassette mounting section and parallel to the loading lever 17, and is planted on the chassis base plate 8 so as to be slidably operated in accordance with the operation of the operating means for selecting each of the operating modes. The thirteenth guide pin is attached to the guide pins 73 and 74 through elongated holes 175 and 176 whose major axis is in the longitudinal direction of the lever 60.
It is installed so that it can slide freely in the horizontal direction in the figure. One side of the mode selection lever 60 has a step-shaped cam surface 98 that engages with the engagement pin 99 provided at the other end of the tension regulator rotating arm 61, as described above.
is formed. This cam surface 98 extends from the tension regulator arm 92 side to the highest first stepped cam portion 17 corresponding to the recording/reproducing operation mode.
7. Consisting of a second stepped cam portion 178 which is the next highest and corresponds to the stop mode, and a third and lowest stepped cam portion 179 which corresponds to the fast forward/rewind operation mode and the loading operation mode, these cam portions 17
7, 178, and 179 are provided so as to be continuous via an inclined surface.

Then, when the loading of the magnetic tape 1 is completed, the tension regulator operating lever 49 is in the inactive state as described above, and the tension regulator rotating arm 61 independently slides the mode selection lever 60. First, when the mode selection lever 60 is not operated when loading is completed, the other end of the tension regulator rotation arm 61 is The engagement pin 99 is located on the right side of the third stepped cam portion 179, and the engagement pin 97 at the tip engages with the narrow diameter portion 93b of the cam groove 93 to move the tension regulator arm 92 to the thirteenth position. It is held at the position shown by the solid line in the figure. Here, when the recording/reproducing mode is selected, the mode operation lever 60 is moved in the direction of arrow H in FIG. The tension regulator rotating arm 61 riding on the shaped cam portion 177 is rotated in the direction of arrow I in FIG. 14 against the biasing force of the coil spring 65, and the engagement pin 97 at the tip thereof is Tension regulator arm 92 as shown in
The tension regulator arm 92 is loosely fitted into the large diameter portion 93a on the base end side of the cam groove 93 of the tension regulator arm 92.
The restricting force exerted by the tension regulator rotation arm 61 is released, and the magnetic tape 1 is rotated about the support column 91 in response to the tension generated in the running magnetic tape 1. The tension regulator arm 92 is urged to rotate as appropriate by the tension spring 100 in accordance with the tension of the running magnetic tape 1, and in response to the rotation of the tension regulator arm 92, the arm 92 A reel stand 13 on the tape supply side with one end locked in the middle
The tension regulator 59 acts to keep the tape tension of the running magnetic tape 1 constant by appropriately adjusting the braking force of the brake belt 181 and controlling the rotational speed of the tape supply reel 15. Function.

Further, when the operating means is operated to enter the stop mode, the engagement pin 99 at the other end of the tension regulator rotation arm 61 is moved to the mode selection lever 6.
0 and is pushed up by the second stepped cam portion 178 of the tension regulator rotating arm 6.
1 is rotated against the coil spring 65 so that the engagement pin 97 at the tip engages with the narrow diameter portion 93b of the cam groove 93 of the tension regulator arm 92. is moved to the position shown by the dashed line in FIG. 13, so that no load is applied to the magnetic tape 1 which is in sliding contact with the guide pin 95 at the tip of the tension regulator arm 92. That is, the tension regulator 59 used in the apparatus of the present invention is rotated by the mode selection lever 60 to relax the magnetic tape 1 in the loading state in the stop mode, thereby protecting the magnetic tape 1. It is configured to achieve the following.

Next, a description will be given of the unloading operation in which the magnetic tape 1 is pulled into the tape cassette 1 from a state where the magnetic tape 1 is loaded on a predetermined tape running path as shown in FIG.

First, in the loading condition shown in FIG. It is driven in reverse in the direction of arrow P in FIG. When the sun gear 126 is driven in reverse, the locking portion 14 of the operation switching arm 145
The planetary gear 26, which was locking the gear shaft 27 to the first locking portion 147a of No. 7, rotates slightly in the reverse direction in the direction of the arrow Q' in FIG. Reverse revolution is regulated and ring gear 138
independently rotates in the opposite direction in the direction of arrow R' in FIG. Then, when the reverse revolution of the planetary gear 26 is restricted and only the ring gear 138 rotates in reverse, the ring gear 138
The reverse rotation of the loading ring 138 is transmitted to the loading ring 5, and the loading ring 5 is rotated in the reverse direction in the direction of arrow T' in FIG. During the reverse rotation of the loading ring 5, the reel stand 14 on the tape winding side is rotated, and the tape winding reel 1 in the tape cassette 3 is rotated.
The magnetic tape 1 is wound onto the magnetic tape 6. Then, the magnetic tape 1 that has been wound around the guide rollers 4 and 7 and the pinch roller 10 provided on the loading ring 5 and wound around the tape guide drum 2 is removed from the outer peripheral surface of the tape guide drum 2. The tape is taken up onto the tape take-up reel 16 while being removed. Then, when the ring gear 138 reversely rotates over a range of approximately 330 degrees contrary to the aforementioned loading operation, only the loading ring 5 is placed in an unloaded state as shown in FIG. 16, and the loading lever 17 is still in the loading state, the folding guide mechanism is in the extended state, and the tension regulator 5 is still in the loading state.
The magnetic tape 9 is also rotated to the second position such that it stands up, and the magnetic tape 1 is pulled out onto a predetermined tape running path.

Then, when the loading ring 5 reaches the unloading state shown in FIG. It will cause it to stop. When the reverse rotation of the ring gear 138 is stopped, the planetary gear 2
6 is the second locking portion 14 of the locking portion 147 of the operation switching arm 145 which receives the reverse driving force of the sun gear 126.
7b, the gear shaft 27 rides on the bulging portion 147c following the second locking portion 147b, and the locking portion 1
Get out of 47. Then, only the planetary gear 26 reversely revolves in the direction of arrow Q' in FIG. planetary gear 26
When the loading lever 17 rotates in reverse, the loading lever 17
0 is moved in the backward movement direction in the direction of arrow B in the figure. When the loading lever 17 is operated to move back, the sub-loading lever 42 is pulled by the tension spring 48 and moves back in the direction of arrow B in FIG. comes into contact with the operation piece 77 of the rack plate 69. Furthermore, when the planetary gear 26 reversely revolves and the sub-loading lever 17 is moved back, the sub-loading lever 42 and the return operation lever 3
5 and tension regulator operating lever 49
is integrally moved with the loading lever 17 in the direction of arrow B in FIG. When these levers 42, 35, 49 are integrated with the loading lever 17 and move back in the direction of arrow B in FIG. The rack plate 69 is moved in the same direction as the backward movement direction of the loading lever 17 by the support pins 73 and 74, which have elongated holes 71 and 72 set in the chassis base plate 8, in the same direction as the arrow E in FIG. ’ direction.
When the rack plate 69 is moved in this manner, the rotating gear 8 attached to the base end of the first folding guide lever 79 constituting the folding guide mechanism meshed with the rack gear 78 of the rack plate 69
0 is rotated clockwise in FIG. 10, and the first folding guide lever 79, which is integral with this rotation gear 80, is rotated in the direction of arrow F' in FIG. When this first folding guide lever 79 is rotated, a second folding guide lever 81 rotatably connected to the tip of this lever 79 moves to a folding guide lever guide having a guide pin 86 provided on the chassis base plate 8. The first folding guide lever 79 is guided by the groove 85 and folded into the first folding guide lever 79 from the extended state.
Following the rotation of the guide drum 2, it moves from one side of the guide drum 2 to the cassette mounting section side. When the second folding guide lever 81 moves in this way, this lever 8
The magnetic tape 1 wound around a guide pole 84 erected at the tip of the magnetic tape 1 is drawn into the take-up reel 16 in the tape cassette 3 while being wound.

Simultaneously with the folding operation of the first and second folding guide levers 79 and 81 of the folding guide mechanism, the tension regulator 59 is also moved from the second position in the loading state to the first position in the unloading state. . That is, by the return movement of the tension regulator operation lever 49 which moves back together with the loading lever 17, the tension regulator rotation arm 61 also moves back to the first position.
0 is moved in the direction of arrow B in the figure. When the tension regulator rotation arm 62 is moved as described above, the engagement pin 97 that is planted at one end of the rotation arm 62 and is engaged with the cam groove 93 of the tension regulator arm 92 is moved. is the narrow diameter portion 9 of the cam groove 93
3b to move the tension regulator arm 92 from the second position in the loading state to the third position.
As shown in the figure, it is rotated to the first position in the unloading state. Then, all of the magnetic tape 1 that has been pulled out to the predetermined tape running path is pulled into the tape cassette 1, and the unloading of the magnetic tape 1 is completed. When the unloading of the magnetic tape 1 is completed, the planetary gear 26 does not return to the starting position as shown in FIG. The raised engagement pin 115 is the loading lever 17
The part from the lower cam surface 116c of the cam groove 116 provided in the first lever 18 of the reel lock release lever 10 to the inclined cam surface 116a.
6 is in an inoperative state and the reel lock claws 118, 119 of the tape cassette 3 are kept unlocked. That is, during the unloading operation of the magnetic tape 1, each reel 1 in the tape cassette 3
5 and 16 are maintained in an unlocked state. Then, the planetary gear 26 further revolves in reverse and the loading lever 17 is moved back, so that the reel lock release lever 10
The engagement pin 115 of No. 6 comes to ride on the upper cam surface 116b from the inclined cam surface 116a of the cam groove 116, and the reel lock release lever 106 is pulled up toward the tape guide drum 2.
Pull up the lock claw attachment piece 120 inside the tape cassette 3, open the reel lock claws 118, 119, and engage with the respective engaging portions 125 of the tape supply reel 15 and tape take-up reel 16.
Lock 6. At this time, the planetary gear 26 is
It returns to the starting position shown in the figure.

Note that when the planetary gear 26 returns to the loading start position shown in FIG. 3, the loading lever 17 is at the rightmost position in FIG. 3, and the sub loading lever 42 is pulled by the tension spring 48. The pressing piece 77 of the rack plate 69 is pressed and supported by the pressing piece 76 of the sub-loading lever 42 to restrict the movement of the rack plate 69 and prevent the folding guide mechanism from operating. Similarly, the tension regulator operating lever 49 is also biased toward the distal end side of the sub-loading lever 42 by the tension spring 58, so as to restrict the movement of the tension regulator 59, thereby preventing the magnetic tape 1 from being easily moved. I try not to operate the drawer.

Furthermore, during the reverse revolution, the planetary gear 26 further reversely revolves by a predetermined angle β as shown in FIG. 17 from the starting position shown in FIG. As a result, the planetary gear 2 is
The cassette lock release lever 165, which is disposed so that the engagement pawl 166 engages with the gear shaft 27 of No. 6, is moved in the direction of arrow Y in FIG. Then, the cassette holder is unlocked and the tape cassette 3 can be removed from the cassette mounting section. Then, when the planetary gear 26 reversely revolves to the above-mentioned predetermined angle β, the drive motor 11 is driven to rotate one step forward, causing the planetary gear 26 to rotate normally via the sun gear 126, and the planetary gear 26 is started as shown in FIG. Upon returning to the starting position, the drive is stopped and all unloading operations are completed.

That is, after the magnetic tape 1 is pulled back from a predetermined tape running path into the tape cassette 3 and wound, the cassette lock of the tape cassette 3 is released so that the tape cassette 3 can be taken out. The present invention is configured to prevent the tape cassette 3 from moving from the cassette holder due to an erroneous operation during the operation of pulling back the magnetic tape 1 from the tape running path, thereby ensuring reliable winding of the magnetic tape 1.

Note that when the planetary gear 26 rotates in reverse, the planetary gear 2
6 is overstroked to release the cassette lock release lever 165, the loading lever 17 slightly moves in the direction A in FIG. 3 during this overstroke. The cam groove 116 prevents the release lever 106 etc. from operating.
It is desirable to form a shape such as the like and attach it to the loading lever 17 so that the sub-loading lever 42 and the like are not operated. Furthermore, the extending direction of the cassette lock release lever 165 is made to extend in a direction perpendicular to the loading lever 17, and in order to move the cassette lock release lever 165, the planet gear 26 is It is desirable to avoid being greatly affected by the movement operation by 26.

By the way, in the device of the present invention, the loading ring 5 is rotated and the loading lever 1 is rotated.
Stopping and switching of the rotational direction of the drive motor 11 that rotationally drives the planetary gear mechanism 12 that reciprocates the planetary gear mechanism 7 are performed by switching a switch mechanism constructed between the planetary gear mechanism 12 and the chassis board 8. This switch mechanism is a planetary gear mechanism 12.
A pair of first contacts 171a formed as shown in FIG.
171b, and a pair of second contacts 172a, 172b, 172c formed as shown in FIG.
The first contacts 171a and 171b are integrally provided so as to face opposite ends of a connecting piece 173 formed in a ring shape from a conductive sheet metal or the like approximately corresponding to the outer diameter of the ring gear 138. , is attached to the lower surface side of the ring gear 138 via the connecting piece 173. In addition, the second contact 172
a, 172b, 172c are planetary gear mounting plates 1
Two contacts 172a, 172c and one contact 17 are attached to both ends of a connecting piece 174 formed in a ring shape from a conductive sheet metal or the like approximately corresponding to the outer diameter of 33.
2b are integrally provided so as to face each other. Note that when the ring gear 138 and the planetary gear mounting plate 133 are made of a conductive member such as metal, an insulating material is interposed between the first contacts 171a, 171b and the second contact 172.
It is necessary to attach a, 172b, and 172c.
As shown in FIG. 19, switch patterns 176a and 176b for detecting the end position of the ring gear 138 are provided on the chassis board 8 by a method such as pattern printing. Furthermore, on the chassis board 8 are switch patterns 177a, 177b, 177c for detecting the start position of the planetary gear 26, which detect the rotation start position of the planetary gear 26 that revolves together with the planetary gear mounting plate 133, and a switch for detecting the reverse rotation position. Patterns 178a, 178
b and 178c are similarly provided by a method such as pattern printing. Then, switch patterns 176a, 1 for detecting the end position of the ring gear 138
76b indicates the first contacts 171a, 171b when the ring gear 138 completes forward rotation and reaches the position where the loading ring 5 completes the winding operation of the magnetic tape 1 onto the tape guide drum 2.
When the ring gear 138 reaches each of the above positions, the switch pattern 1
The conduction between 76a and 176b is the first contact 171
a, 171b.

Further, the switch patterns 176a, 176b, 176c for detecting the start position of the planetary gear 26 are as follows:
The switch pattern 17 for detecting the reverse rotation position is provided at a position in sliding contact with the second contacts 172a, 172b, 172c attached to the planetary gear mounting plate 133.
8a, 178b, 178c, as shown in FIG.
65, when the planetary gear 26 reaches a position overstroked by an angle β from the starting start position, the second contactor 172a, 172
b, 172c, and when the planetary gear 26 reaches each of the above positions, each switch pattern 17
6a, 176b, 176c and 178a, 178
The conduction between the second contacts 172a and 178c is
172b and 172c.

That is, during the loading operation, the drive motor 11 is driven to rotate in the normal direction, the planetary gear 26 rotates in the normal direction and is engaged with the locking portion 147 of the operation switching lever 145, and then the ring gear 138 rotates in the normal direction and the loading ring 5 is rotated in the normal direction. When the magnetic tape 1 reaches the position where the winding on the tape guide drum 2 is completed, the first contacts 171a, 171b and the end position detection switch patterns 176a, 176
When conduction is established between B and B, a stop signal is input to the drive circuit of the drive motor 11, and the drive motor 1
1 is stopped and the loading operation is completed. In addition, during an unloading operation, the drive motor 11 is driven in reverse, and the ring gear 138 is first rotated in the reverse direction, causing the loading ring 5 to rotate in the reverse direction and moving the magnetic tape 1 to the tape guide drum 2.
After the ring gear 138 returns to the starting position by unwinding the ring gear 138 and engaging the engagement member 150 of the operation switching arm 145 in the engagement recess 149 of the ring gear 138, the loading lever 17
When the planetary gear 26 reversely revolves so as to move the cassette lock release lever 165 backward, and further rotates backwardly by an angle β from the start start position so as to release the cassette lock release lever 165, the second contacts 172a, 172
b, 172c and reverse position detection pattern 178
When the patterns 178a, 178b, and 178c are brought into sliding contact and conduction is established between the patterns 178a, 178b, and 178c, a reverse drive signal is input to the drive circuit of the drive motor 11, and the drive motor 11, which was being driven in the reverse direction, is driven in the forward direction. Then, the drive motor 11 is driven to rotate in the normal direction, the planet gear 26 is driven to rotate in the normal direction, and the second contactor 17 is driven to rotate in the normal direction.
2a, 172b, 172c are start position detection switch patterns 176a, 176b, 176c
This pattern 176a, 176b, 1
When electrical continuity is established between 76c and 76c, a stop signal is input to the drive circuit of the drive motor 11, the drive motor 11 is stopped, and the unloading operation is completed with the planetary gear 26 returned to the starting position.

In this way, the planetary gear mechanism 12 and chassis board 8
By providing a switch mechanism between them to control the rotational drive of the drive motor 11, it is possible to detect the position of the micro switch or tension regulator, which is provided in correspondence with the rotational position of the loading ring, unlike conventional ones. This eliminates the need for micro-switches, saves space for installing the switch mechanism, and is effective in downsizing the device.

〔Effect of the invention〕

As described above, in the magnetic recording and reproducing apparatus according to the present invention, by operating the unloading operation means such as an eject button, the loading ring is rotated and the magnetic tape is unloaded from the tape guide drum. A series of unloading operations is performed in such a manner that the loading lever mechanism is then operated to unload tape guide means other than the tape guide drum, such as a tension regulator.
This is carried out in stages, and a means for switching the power of the rotational drive means is provided, so that when the rotational operation of the loading ring is completed, the power to the loading lever side is switched.

With this configuration, even if a so-called sticking phenomenon occurs in which the magnetic tape sticks closely to the tape guide drum, it can be reliably peeled off from the tape guide drum without damaging the magnetic tape. Since it is possible to perform an unloading operation using the magnetic tape, it is possible to realize reliable protection of the magnetic tape and the mechanisms constituting the device. Since a reliable unloading operation of the magnetic tape is realized, it is possible to construct a magnetic recording and reproducing apparatus that prevents erroneous operations caused by poor winding of the magnetic tape and realizes reliable operations.

Furthermore, during unloading, the rotational driving force is switched by the power switching means and transmitted to the loading ring and loading lever, so there is no need to provide multiple rotational driving means, and the mechanism can be simplified. I can do it.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, showing a magnetic tape loading state, FIG. 2 is an exploded perspective view of a loading lever mechanism constituting the present invention, and FIG. 3 is a plan view showing an embodiment of the present invention. FIG. 4 is a side view of the loading lever mechanism in an assembled state, FIG. 5 is an exploded perspective view of a portion including the tension regulator, and FIG. The figure is a plan view of the planetary gear mechanism constituting the present invention, FIG. 7 is a sectional view thereof, FIG. 8 is a plan view showing the loading ring and ring gear portion, and FIG. 9 is a side view thereof. The first
Figure 0 is a plan view showing the state when the loading lever mechanism is moved to the loading position, Figure 11.
12 is a plan view showing the planetary gear mechanism in which the ring gear of the planetary gear mechanism rotates in the normal direction, FIG. 12 is a plan view showing the planetary gear mechanism when the ring gear has completed normal rotation, and FIG. FIG. 14 is a plan view showing the operation state of the tension regulator during loading; FIG. 14 is a plan view showing the state of the tension regulator during recording/reproduction mode; and FIG. 15 is a plan view showing the operation state of the tension regulator during unloading operation. FIG. 16 is a plan view showing the planetary gear mechanism in a state in which the ring gear rotates in reverse; FIG. 16 is a plan view with the loading ring unloaded; FIG. FIG. 6 is a plan view showing the release operation of the cassette lock release lever by the mechanism. FIG. 18 is a plan view showing a contactor of a switch mechanism for controlling the rotation of the drive motor constituting the present invention, and FIG. 19 is a plan view showing a switch pattern of the switch mechanism. 1...Magnetic tape, 2...Tape guide drum,
5... Loading ring, 8... Chassis board, 11... Drive motor, 12... Planetary gear mechanism, 17... Loading lever, 35... Folding guide operation lever, 49... Tension regulator operation Lever, 59... Tension regulator, 61... Tension regulator rotating arm, 69... Rack plate, 79... First folding guide lever, 81... Second folding guide lever, 82 ...Tension regulator arm.

Claims (1)

[Scope of Claims] 1. A tape guide drum to which a rotating magnetic head is attached; a loading ring that is rotated by a rotational drive means and winds a magnetic tape around the outer circumferential surface of the tape guide drum; and a tape mounting section. a tape guide means including a tension regulator that pulls out the magnetic tape from the side to a predetermined tape running path; a loading lever mechanism that moves the tape guide means; and an unloading operation means that commands unloading. , a power switching means for switching and transmitting the power of the rotational drive means to the loading ring and the loading lever, the rotational drive means being driven by the operation of the unloading operation means; rotates the loading ring to unwind the magnetic tape from the tape guide drum, and after unwinding the magnetic tape from the tape guide drum, the power switching means rotates the rotational drive. The power of the means is transmitted to the loading lever mechanism to operate the loading lever mechanism, the loading lever mechanism moves the tape guide means to the return position, and the magnetic tape wound on a predetermined tape running path is moved. A magnetic recording and reproducing device that operates by pulling the tape back toward the tape loading section.