JPH01276413A - Cassette type magnetic tape device - Google Patents

Abstract

PURPOSE:To prevent a magnetic tape device from being operated when a cassette for cleaning is inserted and to prevent the damage of a shaft by operating a member for the engaging of a reel shaft and a cassette hub after a tape cassette is inserted to the magnetic tape device and automatically positioned. CONSTITUTION:When a tape cassette 1 is inserted up to a first position of a magnetic tape device 20, a pin 43 for cassette pressing automatically moves the cassette 1 to a second position through a moving mechanism. When an operating member 68 is revolved and operated in a clockwise direction, the reel shaft rises up and engages to hubs 10 and 11 of the cassette through a reel shaft move and inject mechanism and a tape travelable condition can be obtained. Even when the cassette for cleaning, which does not have a reel shaft inserting hole, is inserted, the cassette for cleaning is automatically charged to a second position. However, since the operating member 68 is not operated, the reel shaft does not rise up. Then, the reel shaft does not collide with the bottom surface of the cassette and the cassette can be prevented from being damaged.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a cassette-type magnetic tape device for recording and/or reproducing information, and more specifically, a magnetic tape device suitable for recording and/or reproducing digital signals. This invention relates to a magnetic tape device.

[Prior Art] In a magnetic tape device, the relative positional relationship between the magnetic head and the magnetic tape must be accurately set. It is configured to move the head and bring it into contact with the magnetic tape to start recording or reproducing. In other words, conventional magnetic tape devices are configured to move both the tape cassette and the magnetic head.

Therefore, there is a drawback that it is difficult to accurately set the relative positional relationship between the magnetic head and the magnetic tape.

In order to solve this kind of drawback, the magnetic head is substantially fixed, and the tape cassette is moved in a plane from this attachment/detachment opening to a position opposite to the magnetic head (data conversion position).
JP-A-60-85454 discloses a magnetic tape device in which a reel shaft is engaged with a hub of a tape cassette.

[The problem that the invention seeks to solve! ! ] By the way, in the magnetic tape device disclosed in the above publication,
When the tape cassette is inserted into the opening of the magnetic tape device,
The tape cassette is automatically moved to the data conversion position f by the force of the spring, and the reel shaft is automatically engaged with the hub of the tape cassette. Therefore, it is excellent in terms of usability. However, in addition to the problem of complicating the mechanism for automatically engaging the reel shaft with the hub after loading the tape cassette into the data conversion position,
There was a risk that the reel shaft would be damaged when inserting the magnetic head cleaning cassette.

That is, when cleaning the magnetic head,
As disclosed in Japanese Patent No. 4012, in order to prevent the guide bins from being located on both sides of the magnetic head, the magnetic head cleaning cassette is not provided with a reel shaft insertion hole.This allows the cleaning cassette to be inserted. Even if the reel shaft and guide bin are prevented from entering the cassette, the magnetic head can be cleaned with a cleaning body such as an m-rod without being obstructed by the guide bin. However, since the conventional apparatus is configured such that the reel shaft automatically rises in conjunction with loading of the tape cassette, there is a risk that the reel shaft will collide with the bottom surface of the cleaning cassette, causing damage to the reel shaft.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cassette-type magnetic tape device that not only has a simplified configuration but also can prevent damage to the reel shaft during cleaning of the magnetic head.

[Means for Solving the Problems] The present invention for achieving the above object comprises a magnetic tape, a pair of hubs around which the tape is wound, and a cassette half that accommodates the tape and the pair of hubs, The cassette half converts signals using a magnetic tape cassette, which has a pair of main surfaces, a front surface having a head insertion opening for exposing the magnetic tape, a back surface opposite to the front surface, and a pair of side surfaces. In a cassette type magnetic tape device, the tape cassette is arranged on a first plane on one plane.
and a second position, and has an opening for attaching and removing a tape cassette on the plane, and centers of the first position are perpendicular to each other on the plane. The center of the second position is set on the intersection of the first and second virtual straight lines, and the center of the second position is located slightly away from the intersection, and the tape cassette is located on the second case.
a signal converting magnetic head attached to the case so as to come into contact with the magnetic tape through the head insertion opening when the head is placed in the position; a cassette moving mechanism for moving the tape cassette from the first position to the second position W in response to insertion of the tape cassette to the first position;
a tape running device including a pair of reel shafts for engaging the hub of the tape cassette placed at the position;
moving the reel shaft from the hub-separated position to a hub-engaging position where it engages the hub of the tape cassette placed at the second position, and from the hub-engaging position to the hub-separated position; The present invention relates to a cassette-type magnetic tape device characterized by comprising a reel axis moving mechanism, and a manipulation member for manually operating the reel axis moving mechanism.

The cassette moving mechanism in the above invention includes, for example, the loading lever 44, the bin 43, and the sliding plate 4 in the embodiment.
6, a spring 47, a control rotation plate 48, a carriage 42, a protrusion 51 having a guide arm 52, a guide bin 53, and the like. As shown in the embodiment, it is preferable that the cassette moving mechanism is configured to automatically move the tape cassette 1 from the first position to the second position by the force of the spring 47. It is also possible to configure the device to be moved from the first position to the second position.

For example, as shown in the embodiment, the reel shaft moving mechanism of the present invention includes a rotating shaft 69, an arm 70 . Connecting rod 71, nodding slope 8
7, a support substrate 26 for a reel shaft, etc., a bin 75, etc. As shown in the example, a reel shaft 29.30, a reel motor 27.2
8. Although it is desirable to move the tape traveling device 25 including the guide bins 31, 32 at the same time, in some cases it is also possible to configure only the reel shaft 29, 30 to move relative to the hub.

The operating member of the present invention is preferably a rotary operating lever 68 as shown in the embodiment, but it may also be a push button type operating member that moves linearly.

[Function] When a tape cassette is inserted into the first position of the magnetic tape device of the present invention, the tape cassette is automatically moved from the first position to the second position by the action of the tape cassette moving mechanism. Thereafter, when the operating member is operated, the reel shaft engages with the hub of the tape cassette, and the tape becomes ready for running. When a cleaning cassette without a reel shaft insertion hole is inserted, this cleaning cassette is also loaded in the second position.

In this case, the operating member is not operated to raise the reel shaft, but the reel shaft is maintained at the hub-separated position.

Thereby, damage to the reel shaft can be prevented.

[Embodiment] Next, a cassette type magnetic tape device according to an embodiment of the present invention will be described with reference to the drawings.

[Tape cassette] The tape cassette 1 used in this magnetic tape device has one main surface (front surface) 2 as shown in FIGS. 16 and 17.
, the inside of a cassette half (case) 8 having the other main surface (back surface) 3 opposite to this, a front surface 4, a back surface 5 opposite to this, a first side surface 6, and a second side surface 7 opposite to this. , a magnetic tape 9 and first and second reels or hubs 1;
o, 11. A pair of hubs 1o, 1
1 is rotatably arranged between the front surface 2 and the back surface 3 of the half 8, and the front surface 2 and the back surface 3 have a reel shaft insertion hole 12.13, a guide bin insertion hole 14.15, and a general tape. A capstan is inserted in the recorder, but the actual
In Example II, instead of this, there is a hole 16 into which a light emitting element for detecting the beginning of the tape (BOT) and the end of the tape (EOT) is inserted. On the front side 4 of the cassette half 8, there are 5
Two openings 17 or windows are provided, and a recess 18 is provided at a position slightly offset from the center of the back surface 5 of the cassette half 8 to distinguish between the A side or front side 2 and the B side or back side 3 of the cassette half 8.
is provided.

[Magnetic Head] The cassette-type magnetic tape device 20 has a magnetic head 23 mounted on a substrate 22 of a case (container) 21, as shown in FIG. This magnetic head 23 contacts the magnetic tape 9 of the tape cassette 1 to record and reproduce data.

Note that the magnetic head 23 operates on this signal conversion gap surface 24.
Although it cannot be moved in the direction perpendicular to , it is moved in the track forward direction by a head moving mechanism (track switching mechanism) not shown.

The track switching mechanism of the magnetic head 23 is based on Japanese Patent Application Laid-Open No. 60-85.
It is constructed on the same principle as that disclosed in Japanese Patent No. 454.

[Tape running device] The magnetic tape device 20 is the tape running device 2 shown in FIG.
5. This tape running device 25 includes a support substrate 26
A pair of reel motors 27.28 on top, a pair of reels @2
9.30 and a pair of guide pins 31.32.

A pair of reel shafts 29.30 are connected to a pair of reel motors 27.
28 and extends in a direction perpendicular to the support substrate 26. A pair of guide pins 31 and 32 are also attached to the support substrate 2.
It extends in a direction perpendicular to 6. The tape running device 25 is not fixedly arranged on the case 21, and is located at a position where the reel lF1 [129, 30 is spaced apart from the tape cassette 1 as shown in FIG. The shafts 29,30 are configured to move between positions in which they are inserted into the tape cassette 1. The moving mechanism of the tape running device 2 will be explained in detail later. Note that this tape running device does not include a capstan and a pinch roller, so a tape speed detection roller (not shown) detects the speed of the tape 9 and controls the reel motors 27 and 28.

[Case] Front plate 3 of case 21 for housing and storing various parts
3 is provided with an opening 34 for attaching and detaching a cassette, as shown in FIGS. 4, 5, and 6.

As is clear from FIG. 2, this cassette attachment/detachment opening 34 is formed so that the tape cassette 1 can be inserted therein with a directionality that corresponds to a straight line connecting the pair of hubs 10, 11. That is, the cassette attachment/detachment opening 3 is opened so that the tape cassette 1 is inserted along a first imaginary straight line 35 drawn on one plane on the substrate 22 of the case 21 as shown in FIG.
4 is provided. Note that the tape cassette 1 is inserted so that the front surface 2 and the back surface 3 are parallel to the substrate 22, and the tape cassette 1 is placed in the first position shown by a break 836 in FIG. 2 and in the second position shown in FIG. 3. Take position. The second position is a position where the tape cassette 1 is moved along the second imaginary straight line 37 shown in FIG. 2, which is orthogonal to the first imaginary straight line s13 on the - plane.

In FIG. 2, the first virtual straight line 35 and the second virtual straight line! ! Tape cassette 1 whose intersection point 38 with 37 is the first position
(the midpoint of the reel hub 10.11), and the center of the tape cassette 1 in the second position is a point 37a slightly shifted to the left along the second virtual straight line 1137 from the intersection point 38. The second position of the tape cassette 1 is the third
As is clear from the figure, the position where the magnetic head 23 contacts the magnetic tape 9 of the tape cassette 1 is the data conversion position.

In order to enable the tape cassette 1 to assume a first position and a second position, a case 21 is installed as shown in FIG.
A stopper protrusion 39, a front positioning protrusion 40, and a rear guide protrusion 41 are provided on the substrate 22 of the tape cassette 1 by hand. !
35, and when the side surface 6 of the tape cassette 1 comes close to the stopper protrusion 39, the tape cassette 1
takes the first position. Thereafter, the cassette is moved along the second imaginary straight line 37 by the cassette moving mechanism, and the front surface 4 abuts the front positioning protrusion 40 as shown in FIG.
Take the second position. Note that the stopper protrusion 39 is
This is provided to prevent the tape cassette 1 from being inserted along the virtual straight line 35 more than necessary.

[Cassette Moving Mechanism] The cassette moving mechanism includes a cassette carriage 42, which can also be called a cassette guide or a cassette holder, shown in FIGS. 1, 10, and 11, and a cassette carriage 42 shown in FIGS.
As shown in the figure, a cassette pressing pin 43 rotatably connected to one end of the carriage 42, FIGS.
As shown in FIGS. 10 and 11, a force set loading lever 44 is provided with a pin 43, and as shown in FIGS. A sliding plate 46 connected to the sliding plate 46, a loading coil spring 47 that applies a biasing force to the right in FIG. 7 to the sliding plate 46, and a control rotation plate for controlling the operation of the sliding plate 46. 48.

To explain each part of the cassette moving mechanism in more detail, the cassette pressing pin 43 is provided with an inverted truncated conical pressing part 43a and a connecting shaft part 43b, as shown in FIG.
The connecting shaft portion 43 is inserted into the through hole 49 provided in the carriage 42.
b is rotatably inserted. A screw 50 is screwed into the screw hole of the connecting shaft portion 43b, and the head of the screw 50 prevents the carriage 42 from being removed.

The carriage 42 moves only in the left-right direction in FIGS. 1 and 10 (in the direction of the second imaginary straight line 37 in FIG. 2). In order to achieve stable movement in this direction, two protrusions 51 are provided on the left end side of the carriage 42 in FIG. It has been inserted. Pin 53 is
Pin support 5 fixed to substrate 22 as shown in FIG.
It is supported by 4. Since the guide groove 52 extends parallel to the second imaginary straight line 37 in FIG. 2, the carriage 42 moves in the direction of the second imaginary straight line 37.

A loader lever 44 having a cassette pressing bottle 43 at one end is attached to the main board 22 with a screw 55 as shown in FIG.
It is rotatably supported by a shaft 57 implanted in a sub-board 56 which is fixed at. A pin 45 is installed at the other end of the loading lever 44, and this pin 45 is connected to the sliding plate 4.
6 is pushed into the hole 46a. Since the pin 4 is inserted into the hole 46a with a margin, the loading lever 44 can be freely rotated.

As shown in FIG. 7, the sliding plate 46 that slides on the main board 22 is formed with two long guide holes 58a and 58b extending parallel to the second imaginary straight line 37. Fixed bins 59a and 59b are pushed in.

Therefore, the sliding plate 46 slides only in the direction parallel to the second imaginary straight line 37.

One end of the cassette loading coil spring 47 is locked to the sliding plate 46, and the other end is locked to a spring locking protrusion 60 provided on the board 22. Therefore, the sliding plate 46 is urged rightward in FIG. 7 by the spring 47.

The control rotation plate 48 is rotatably supported by a fixed pin 59a. A cassette engaging portion 61 is provided at one end of the control rotating plate 48, and a coil spring 62 is provided between the other end and the locking protrusion 60. bias is always given. Control rotating plate 48
A pin 64 implanted in the sliding plate 46 is inserted into a hole 63 having a cam surface. The hole 63 has a surface 65 that prevents the pin 64 from moving to the right and a linear portion 6 that allows the pin 64 to move to the right.
6. Since the fan-shaped blocking surface 65 is an arcuate surface centered on the pin 59a, the area in which the pin 64 is in contact prevents the pin 64 from moving to the right.

Next, the operation of the cassette moving mechanism will be explained. First, the first
When the tape cassette 1 is inserted along the first imaginary straight line 35 in the cassette eject state shown in FIGS. Press. When the tape cassette 1 is further inserted, the control rotating plate 48 rotates counterclockwise in FIGS. 2 and 7 against the ejecting coil spring 62. When the rotation of the control rotation plate 48 progresses due to the insertion of the tape cassette 1, the pin 64 passes the end of the blocking surface 65, the pin 64 is no longer blocked by the control rotation plate 48, and the pin 64 can freely move to the right. , and the sliding plate 46 moves to the right as shown in FIG. 8 by the force of the loading coil spring 47. As a result, the pin 45 of the loading lever 44 is pressed by the sliding plate 46, and as shown in FIG.
57 in the clockwise direction, the pressing part 43a of the cassette pressing bin 43 presses the back surface 5 of the tape cassette 1, and moves the tape cassette 1 to the left along the second imaginary straight line 37. . As a result, the rotary tape cassette +-1
is loaded in the second position shown in FIG. 3, and the magnetic head 23 contacts the magnetic tape 9. Further, the positioning protrusion 40 comes into contact with the front surface 4 of the tape cassette 1, and positioning in the direction of the second imaginary straight line 37 is achieved. tape cassette 1
enters under the two cassette retaining springs 67, and presses the board 2.
2. Note that since the carriage 42 is connected to the loading lever 44, the second virtual straight line 3
7 along with the tape cassette 1.

[Reel Axis Movement and Ejection Mechanism] This magnetic tape device has a pair of reels @29.30 even when the tape cassette 1 is moved from the first position shown in FIG. 2 to the second position shown in FIG. does not raise automatically, so manually raise the reel @29.30
For this operation, an operating lever 68 is provided on the outside of the front plate 33 of the case 21. The operating lever 68 is in the first angular position shown in FIG. 4 when in the eject state, is in the second angular position shown in FIG.
30 is in the third angular position of FIG. 6 when raised.

The connection mechanism between the operating lever 68 and the support substrate 26 of the tape traveling device 25 rotates as shown in FIGS. 9 and 11.
69, a pair of link arms 70, a pair of link connecting rods (connecting plates) 71, a slider 72, and the connecting rod 71 is rotatably connected to the arm 70 as shown in FIGS. 12 to 14. a pair of pins 74 for connecting the connecting rod 71 to the slider 72, and three pins 75 for engaging the slider 72 to the support substrate 26.

The rotating shaft 69 to which the operating lever 68 is fixed at one end is
It is rotatably supported by a pair of bearings 76 attached to the sub board 56, and the first virtual straight! 135.

The arm 70 constituting the link is fixed to the rotating *1II 69, and has a connecting pin 73 at its tip.

The connecting rod 71 rotatably connected to the arm 70 by a pin 73 has a long hole 77 as shown in FIG. 12, and a pin 74 implanted in the slider 72 is inserted into the long hole 77. .

As shown in FIG. 9, the slider 72 consists of a pair of side plate parts 78, 79 perpendicular to the board 22 and a connecting plate part 80 parallel to the board 22.
8.79 and extends in the same direction as the rotating shaft 69.

The support board 26 also has side parts 82 and 83 perpendicular to the main board 22 in addition to the main face part 8. Part 83 to 1
Books provided.

The side plate portions 78 and 79 of the slider 72 have a slope 87 having an inclined portion 84 and upper and lower horizontal portions 85 and 86 continuous thereto.
is provided. Further, as shown in FIG. 9, the slider 72 includes a pair of guide portions 89 each having a long hole 88 extending parallel to the second virtual straight line 1137 shown in FIG. A pin 90 embedded in the substrate 22 is located in the long hole 88.
is inserted. Therefore, the slider 72 is movable only in the direction of the second imaginary straight line 37 shown in FIG.

Note that a spring 92 is provided to help the slider 72 slide.
is provided, and the slider 72 is biased to the right in FIG.

A pair of pins 92 extending perpendicularly to the main board 22 are provided to move the support board 26 of the tape traveling device 25 only in the direction perpendicular to the main board 22.
2 is inserted into the through hole 93 of the support substrate 26.

In order to relate the rotating shaft 69 to the loading lever 44, as shown in FIG. has been done.

In order to stably maintain the third angular position of the operating lever 68 shown in FIG. 6, a stopper 97 is provided, as shown in FIG. Elastic protrusion 98 for pressing against 97
is provided.

The stopper 97 and the elastic protrusion 98 are formed by processing a part of the sub-board 56. The elastic protrusion 98 consists of an arcuate portion centered on the rotating shaft 69, and there is It is formed so that the bottle 73 can be held between the two. The position of the stopper 97 is set so that the center of the bin 73 moves from the lower side to the upper side slightly beyond the straight line connecting the center of the rotating shaft 69 and the center of the bin 74 or more. has been done.

Next, the reel axis movement and the operation of the eject mechanism will be explained. The tape cassette 1 is inserted to the first position along the first imaginary straight line 35 in FIG. 2, and then the loading lever 44 is moved to the second position as shown in FIG. When rotated clockwise as shown in FIG. 8, the bin 94 protruding downward from the loading lever 44 presses the bin 96 of the arm 95 as shown in FIG. 70 in a slightly counterclockwise direction. This causes the operating lever 68 to rotate from the first angular position shown in FIG. 4 to the second angular position shown in FIG.

If for some reason it is desired to eject the loaded tape cassette l in the state shown in FIG. 5, ejection is accomplished by rotating the operating lever 68 counterclockwise.

As shown in FIGS. 3 and 5, the tape cassette 1
When the control lever 68 is loaded in the third angular position shown in FIG. As a result, the rotating shaft 69 and the link arm 70 rotate counterclockwise as shown in FIG. 14, and the link connecting rod 71 rotates clockwise and is displaced to the right. As a result, the bin 74 of the slider 72 is pressed rightward by the connecting rod 71, the slider 74 moves rightward, and the operating lever 68
The rotational movement (angular displacement) of the slider 72 is converted into linear movement of the slider 72. As a result, from the horizontal part 85 of the groove 87 to the bin 75
is pulled out, and the bottle 7 is pressed by the inclined portion 84 of the groove 87. Since the sloped part 84 is formed downward to the right in FIG. 13, when the bottle 75 is pressed by the sloped part 84, a component that pushes the bottle 75 upward is given, and the support integrated with the bottle 75 is The substrate 26 is guided by the vertical guide pins 92 and raised. Bin 73 of link arm 70
When the operating lever 68 is turned until it touches the stopper 97, the bottle 75 is placed on the horizontal portion 86 above the armature 87 as shown in FIG.
The support substrate 26 stops rising. Further, in the state shown in FIGS. 14 and 15, the bottle 73 is pressed toward the stopper 97 by the tip of the elastic protrusion 98 based on the slight elastic deformation of the elastic protrusion 98, and is stably held.

The tip of the elastic protrusion 98 is formed into a curved surface so that the bottle 73 can be easily removed from the tip.

When the bin 75 of the support board 26 moves to the height shown in FIG. 14, the motor 27.28, reel shaft 29.30, and guide bin 31.32 supported by the support board 26 also rise, and the reel shaft 29.30 engages with the hub 10.11 of the tape cassette 1 through the through hole 99 formed in the substrate 22, and the guide pin 31.32 engages with the through hole 14.15 of the tape cassette through the through hole 100 of the substrate 22. Get into it. This allows the tape 9 to run.

When ejecting the tape cassette 1, first move the operating lever 68 from the third angular position shown in FIG. 6 to the second angular position shown in FIG.
Rotate counterclockwise to the angular position. As a result, the reel shaft 29.3o and the guide bin 31.32 are removed from the tape cassette 1 and lowered to their original positions in an operation opposite to when the reel shaft 29.30 was raised. That is, the link arm 70 rotates clockwise, and the link connecting rod 7
1 rotates counterclockwise. As a result, the slider 72 becomes freely movable, and the slider 72 is moved to the right in FIG. 9 and to the left in FIG. 14 by the force of the return spring 91 shown in FIG. As a result, the bottle 75 is pushed down by the inclined portion 84 of the arm 87, and the bottle 75 and the support substrate 26 integrated therewith are returned to the position shown in FIG. 13.

Move the operating lever 68 from the second angular position shown in FIG.
When turned to the first angular position shown in the figure, the pin 96 of the arm 95 attached to the rotation @69 moves the pin 94 of the loader lever 44 to the right in Figure 13 (to the left in Figure 8). Press. As a result, the loading lever 44
rotates counterclockwise in FIG. 8 and returns to the position shown in FIG. 7.

When the loading lever 44 is in the position shown in FIG. 7, the cassette pressing pin 43 is displaced rightward, releasing the leftward pressing of the tape cassette 1. Further, the carriage 42 connected to the loading lever 44 via the cassette pressing pin 43 is also displaced to the right along with the cassette pressing pin 43, and as shown in FIG. The tape cassette 1 is conveyed from the second position in FIG. 3 to the first position indicated by the broken line in FIG.

The sliding movement follows the rotation of the loading lever 44 in the counterclockwise direction in FIG. 8 as the operating lever 68 is rotated from the second angular position in FIG. 5 to the first angular position in FIG. 4. When the sliding plate 46 moves to the left in FIG. 8 and the tape cassette 1 returns to the first position shown by the broken line in FIG.
The pin 64 of 6 is connected to the straight portion 6 of the hole 63 of the control rotation plate 48.
There will be a withdrawal from 6. This causes the pin 6 of the control rotation plate 48 to
4 is released, and the control rotation plate 48 is rotated by the spring 6.
2, and the tape cassette 1 is ejected by the cassette engaging portion 61 to the position indicated by the solid line in FIG. The sliding plate 46 is biased to the right in FIG.
Therefore, even if the operation lever 68 is released at the position shown in FIG. 4, the sliding plate 46 will not move to the right.

[File Protection Mechanism] In order to prevent the recording on the tape 9 of the tape cassette 1 from being erroneously erased, a mechanism is provided to detect the presence or absence of the file protection (erroneous erasure prevention) pawl 102 on the tape cassette 1. This file protection mechanism is configured to operate in conjunction with the loading of the tape cassette 1, and includes a file protection sliding plate 103 shown in FIG. The sliding plate 103 includes a reset rotating arm 105 rotatably engaged with a pin 104 and a photocoupler 110.

The file protection sliding plate 103 has a long hole 106 into which fixed pins 59a and 59b are inserted and move only in the direction of the second imaginary straight line 37 in FIG. Sliding plate 1
03 is formed in an L-shape as a whole, and the 0 part 103b has a long hole 106 and a part 103a extending parallel to the second imaginary straight line 8137 and a part 103b extending parallel to the first imaginary straight line 35. Although it is almost hidden under the reset arm 105 in FIGS. 1 to 3, the 0 portion 103b clearly shown in FIG.
The tape cassette 1 has a tip 103c that protrudes toward the tape cassette 1 to detect the presence or absence of the file protection claw 102.

As shown in FIG. 11, the file protection control arm 105 has a U-shaped side surface and is rotatably supported by a shaft 107 embedded in the substrate 22. This arm 1
One end of the upper arm 105a of 05 has a U-shaped notch and engages with the pin 104 of the sliding plate 103.
The end of 5b is engaged with a pin 108 implanted in the loading lever 44. Note that the sliding plate 103 is the spring 10
9 to the left in FIG.

Next, the operation of the file protection mechanism will be explained. When the tape cassette 1 is loaded into the data conversion position (second position) shown in FIG.
In order to rotate clockwise in FIG. 7 about , the pin 108 installed here is displaced to the left as shown in FIG. This allows the arm 105 to rotate counterclockwise. The blocking of the sliding plate 103 by the arm 10 is released, the sliding plate 103 moves to the left by the biasing force of the spring 109, and the tip 103C of the portion 103b touches the back surface 5 of the tape cassette 1 as shown in FIG. The file protection claw 102 enters the hole and detects the presence or absence of the file protection claw 102.

When the claw 102 is present, the tip 103c of the portion 103b penetrates less, and when the claw 102 is not present, the tip 103c of the portion 103b penetrates less.
The tip 103c of b becomes more intrusive. As a result, the file protection sliding plate 1 is
03 changes, the relationship with the photocoupler 110 arranged at the left end of the sliding plate 103 also changes, and an output corresponding to the presence or absence of the claw 102 can be obtained.

[Cleaning the magnetic head] This magnetic disk unit! When cleaning the magnetic head 23, a cleaning cassette similar to that disclosed in Japanese Utility Model Application Publication No. Sho 61-174012 is loaded into the magnetic disk device instead of the tape cassette 1. The cleaning cassette is
Although it has a similar external shape to the tape cassette 1-1, it does not have a hole corresponding to the reel shaft insertion hole 12, 13 of the tape cassette 1.

When the cleaning cassette is loaded in the same manner as the tape cassette 1, the operating lever 68 is rotated to the second angular position shown in FIG. When loading the cleaning cassette, the reel shaft 29.30 and the guide bin 31.32 do not automatically rise, as they do when loading the tape cassette 1. Therefore, the tip of the reel shaft 29.30 does not touch the cleaning cassette. There is no problem of collision and damage. Since the guide bins 31 and 32 do not protrude on both sides of the magnetic head 23, the gap surface of the magnetic head 23 can be cleaned with a cleaning rod without being hindered by the guide bins 31 and 32. Note that the cleaning cassette is provided with a passageway for guiding the cleaning rod to the magnetic head 23. After cleaning the magnetic head, the operating lever 68 is returned from the second angular position shown in FIG. 5 to the first angular position shown in FIG. 4. As a result, the cleaning cassette is ejected as in the case of the tape cassette 1.

The magnetic tape device of this embodiment has the following advantages.

(1) The reel shaft 29, 30 is configured not to automatically rise in response to completion of movement of the tape cassette 1 from the first position (cassette insertion position) to the second position (data conversion position). Therefore, even when the cleaning tape cassette is loaded, the reel @29.30 does not rise automatically, and the reel shaft 29.30 is not damaged.

(2) Since it is not necessary to automatically raise the reel @ 29.30 upon completion of the movement of the tape cassette 1 from the first position to the second position, the structure of the lifting mechanism of the reel @ 29.30 is changed. It can be simplified. In addition, since the conventional device is configured to raise the reel shaft using the force of a spring, a large operating force is required to lower the reel shaft and eject the tape cassette. The force becomes smaller.

(3) Since the eject operation button is configured with the operation lever 68 instead of a push silver type, not only can the amount of protrusion of the operation part from the front plate 33 be reduced, but also the eject and reel shaft can be operated with a small operation force. 29.30 etc. can be raised and lowered.

(4) Since the reel f#29.30 is raised and lowered and the tape cassette 1 is ejected using a single operating lever 68, the operation is not only easy but also simplified. I can do it. In addition, the reel shaft 29
．． There is no need to adjust the timing between raising and lowering the tape cassette 30 and ejecting the tape cassette 1.

(5) An operating lever 68 whose operating member changes its angular position
Therefore, the operating state can be clearly known from the angular position of the operating lever 68.

(6) Since the operating lever 68 rotates across the insertion opening 34 of the tape cassette 1, the tape cassette 1
When the tape cassette 1 is incompletely inserted, the operation lever 68 hits the tape cassette 1 and becomes unable to rotate. Therefore, it is possible to prevent the reel shafts 29 and 30 from rising when the tape cassette 1 is incompletely inserted. In addition, incomplete insertion of the tape cassette 1 can be easily detected.

(7) Single loading lever 44, cassette pressing bin 43, file protection @ treetop control bin 1
08, since the bin 94 for associating with the rotation axis 69 is provided, a plurality of m ellipses can be associated with a simple configuration.

(8) Since the file protection sliding plate 10B is placed overlapping the loading sliding plate 46, the guide bins 59a and 59b can be shared, and space can be used effectively.

(9) The cassette pressing bin 43 is provided with a pressing portion 43a shaped like an inverted truncated cone, and this presses the boundary between the front surface 2 or back surface 3 and the back surface of the tape cassette 1, so the direction in which the tape cassette 1 is pressed against the substrate 22 The force component of is obtained,
The tape cassette 1 can be held with good stability.

(10) The protruding part 51 having the edge 52 is provided at the end of the carriage 42, and the bottle 53 is inserted into the protruding part 51 to linearly guide the carriage 42, so that the configuration of the guide part can be simplified and the size can be reduced. has been achieved.

(11) As shown in FIGS. 14 and 15, the arm 70 is rotated to a position where the center of the bin 73 slightly passes the straight line connecting the center of the rotating shaft 69 and the center of the bin 74 of the slider 72. Since the stopper 97 is provided at
The force of the spring 91 shown in FIG. 9 acts in the direction of pressing the bottle 73 against the stopper 97, so that the position of the arm 70 and its related parts can be stably held.

(12) As shown in FIG. 15, since the elastic protrusion 98 is provided, the bottle 73 is inserted between the tip of the elastic protrusion 98 and the stopper 97, and the bottle 73 is stably held, and the operation of the operating lever 68 is completed. You can definitely know by the feel and sound of your hands.

(13) Reel motor 27.2 is mounted on the support board 26.
8. The tape running device 25 is integrally constructed by mounting the reel shaft 29, 30 and the guide pin 31, 32, and all of these components are configured to move up and down in the same way, so the configuration of the tape running bag rl 25 is It can be done easily.

[Modifications] The present invention is not limited to the above-described embodiments; for example, the following modifications are possible.

(1) It is also possible to use a system in which the magnetic tape 9 is run using a capstan and a pinch roller.

(2) To reduce the amount of protrusion of the operating lever 68,
A recess may be provided in the front plate 33, and part or all of the operating lever 68 may be embedded therein.

(3) The carriage 42 may be formed into a box shape that accommodates the tape cassette 1, or the carriage 42 may be arranged below the tape cassette 1.

[Effects of the Invention] As is clear from the above, according to the present invention, since the reel shaft is engaged with the hub of the tape cassette by operating the operating member, the movement mechanism of the reel shaft can be simplified. At the same time, it is possible to prevent the movement of the reel shaft when the cleaning cassette is inserted. Therefore,
The reel shaft does not collide with the cleaning cassette and be damaged.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the main parts of a magnetic tape device according to an embodiment of the present invention. FIG. 2 is a plan view showing a state in which the carriage is removed from the magnetic tape device of FIG. 1 and insertion of a tape cassette is started. , Fig. 3 is a plan view showing a magnetic tape device loaded with a tape cassette, Fig. 4 is a front view of the magnetic tape device in the state shown in Fig. 2, and Fig. 5 is a plan view of the magnetic tape device in the state shown in Fig. 3. Figure 6 is a front view of the magnetic tape device after the reel shaft has been raised; Figure 7 shows Figure 2 with the tape cassette and file protector mechanism removed and with the board partially cut away. 8 is a plan view showing a state in which the tape cassette and file protector mechanism are removed from FIG. 3 and the board is partially cut away; FIG. 9 is a plan view showing the magnetic tape device in FIG. FIG. 10 is a cross-sectional view taken along line X-X in FIG. 1, and FIG. 12 is a cross-sectional view showing a part of line XI, FIG. 12 is a rear view of the lifting mechanism of the tape transport device seen from XI [-XIII in FIG. Figure 14 is a rear view showing the same part as in Figure 12 with the reel shaft raised; Figure 15 is a rear view showing the same part as Figure 12 with the reel shaft raised; 16 is a plan view of the tape cassette, and FIG. 17 is a front view of the tape cassette. DESCRIPTION OF SYMBOLS 1... Tape cassette, 9... Magnetic tape, 10°11... Hub, 21... Case, 22... Board,
23... Magnetic head, 25... Tape running device, 2
6...Support board, 27.28...Reel motor, 2
9.30...Reel shaft, 31.32...Guide bin, 33...Front plate, 34...Cassette attachment/detachment opening,
35... First imaginary straight line, 37... Second imaginary straight line, 42... Carriage, 43... Cassette pressing pin, 44... Loading lever, 46... Sliding plate, 47... Loading coil spring, 48... Control rotating plate, 56... Sub board, 68... Operation lever,
69... Rotating shaft, 70... Arm, 71... Connecting rod, 72... Slider.

Claims (1)

[Scope of Claims] [1] Consisting of a magnetic tape, a pair of hubs around which the tape is wound, and a cassette half that accommodates the tape and the pair of hubs, the cassette half has a pair of main surfaces and a magnetic field. In a cassette-type magnetic tape device that converts signals using a magnetic tape cassette, the tape cassette has a front surface having a head insertion opening for exposing the tape, a back surface opposite to the front surface, and a pair of side surfaces. is the first position on one plane and the second
, and has an opening for attaching and removing a tape cassette on the plane, and the center of the first position is located at first and second positions perpendicular to each other on the plane. The center of the second position is set on the second imaginary straight line slightly apart from the intersection, and the tape cassette attachment/detachment opening is located on the first imaginary straight line. a signal converting magnetic head attached to the case so as to contact the magnetic tape through the head insertion opening when the tape cassette is placed in the second position; In response to the tape cassette being inserted to the first position along the first imaginary straight line through the tape cassette attachment/detachment opening, the tape cassette is moved from the first position to the second position. a tape traveling device including a pair of reel shafts for engaging the hub of the tape cassette placed at the second position; a reel axis moving mechanism for moving the tape cassette placed at the second position to a hub engaging position where it engages with the hub, and from the hub engaging position to the hub separating position; A cassette-type magnetic tape device comprising: an operating member for manually operating a reel axis moving mechanism.