JPH01276460A - Cassette type magnetic tape device - Google Patents

Abstract

PURPOSE:To keep a reel shaft in a hub separating position when a cassette for cleaning is charged and to discriminate whether the reel shaft is in the hub separating position or not according to the angle position of an operating lever by converting an angle change to the lifting operation of a reel width when the operating lever of a magnetic tape device is revolved and causing the reel shaft to be a hub engaging position or the hub separating position. CONSTITUTION:A signal to contact to a magnetic tape 9 of a tape cassette 1 is converted by a magnetic head 23 of the cassette type magnetic tape device. Then, reel motors 27 and 28, which drive reel shafts 29 and 30 to be engaged to a hub 11 of the cassette 1, are arranged in a tape traveling device 25. An operating lever 68 is provided in the outside of a front surface board 33 in a case 21 and a pair of the reel shafts 29 and 30 are moved. At the time of an eject condition, the lever 68 is caused to be a first angle position and when the cassette 1 is charged, the lever is caused to be a second angle position. Then, when the reel shafts 29 and 30 are automatically raised, the lever is caused to be a third angle position and the positions of the reel shafts 29 and 30 are discriminated according to the position of the lever 68.

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 particularly, to a cassette-type 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 a magnetic head and a magnetic tape must be set accurately. −
Numerical magnetic tape devices are configured to move a magnetic head to contact the magnetic tape after carrying a magnetic tape cassette to a predetermined position, and to begin recording or playback. 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, the tape cassette is moved in one plane from this attachment/detachment opening to the position facing the magnetic head (data conversion position), and the reel axis is A magnetic tape device configured to engage with a hub is disclosed in Japanese Patent Laid-Open No. 60-85454.

[Problems to be Solved by the Invention] By the way, in the magnetic tape device disclosed in the above-mentioned 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 by the force of the spring. Move to.

The reel shaft is also configured to automatically engage 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, the reel shaft may be damaged when inserting the magnetic head cleaning cassette. There was a fear that it would happen.

That is, when cleaning the magnetic head,
As disclosed in Japanese Patent No. 4012, in order to prevent the guide pins from being located on both sides of the magnetic head, the magnetic head cleaning cassette is not provided with a reel shaft insertion hole. The reel shaft and the guide pin are prevented from entering the cassette even if the reel shaft and the guide pin enter the cassette, and the magnetic head can be cleaned with a cleaning body such as a cotton swab without being obstructed by the guide pin. 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 Therefore, an object of the present invention is to provide a cassette type magnet that not only can simplify the configuration, but also can prevent damage to the reel shaft during cleaning of the magnetic head, and can easily move the reel shaft. The purpose is to provide tape devices.

[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. A cassette-type magnetic tape device comprising: a magnetic head that contacts the magnetic tape of the tape cassette to convert signals; a pair of reel shafts for engaging with a hub of the tape cassette; and a drive of the pair of reel shafts. a tape running device including a motor for rotating the tape, a rotating operation lever, and rotating the operation lever to linearly move the reel shaft from a hub separation position to a hub engagement position and vice versa; The present invention relates to a cassette type magnetic tape device characterized in that it is equipped with a reel axis moving mechanism formed to move the reel axis.

The reel shaft moving mechanism of the present invention includes, for example, a rotating shaft 69, an arm 70, a connecting rod 71, and an inclined groove 8, as shown in the embodiment.
7, a support substrate 26 for a reel shaft, etc., a pin 75, and the like.

[Function] When the operating lever of the magnetic tape device of the present invention is rotated, the angular displacement is converted into a vertical movement (linear movement) of the reel shaft, and the reel shaft can be placed in the hub engagement position or the hub separation position. can.

When a cleaning cassette without a reel shaft insertion hole is loaded, the reel shaft is maintained at a position away from the hub.

Whether or not the reel shaft is in the hub-separated position can be determined based on the angular position of the operating lever.

When the stopper 97 is provided as shown in claim 2, the spring 9
1 force generates a force in the direction of pressing the pin 73 against the stopper 97, and the reel shaft 29, 30 can be stably maintained in the hub engagement position.

[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;
0.11. Pair of hubs 10.1
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 pin insertion hole 14.15, and a general tape. In a recorder, a capstan is inserted, but in this embodiment, instead of this, a hole 16 is provided into which a light emitting element for detecting the start of tape (BOT) and end of tape (EOT) is inserted. The front side 4 of the cassette half 8 is provided with five openings 17 or windows, and the back side 5 of the cassette half 8 is provided with five openings 17 or windows.
A recess 18 is provided at a position slightly offset from the center of the cassette 1 to distinguish between the A side, that is, the front side 2, and the B side, that is, the back side 3 of the cassette 1.

[Magnetic head] Cassette type magnetic tape mounting! 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 the direction, it is moved in the track width 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 a tape running device 2 shown in FIG.
5. This tape running device 25 includes a support substrate 26
A pair of reel motors 27 and 28 on top, a pair of reel shafts 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 disposed on the case 21, and the reel shafts 29 and 30 are spaced apart from the tape cassette 1 as shown in FIG.
9.30 is configured to move between the position where the tape cassette 1 is inserted and the position where the tape cassette 1 is inserted. The mechanism for moving the tape travel bag 225 will be explained in detail later. Note that this tape running device does not include a capstan and a pinch roller. Therefore, the tape speed detection roller (not shown)
to control the reel motors 27 and 28.

[Case] Front plate 3 of case 21 for housing and attaching each part
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 opening 3 for inserting and removing the cassette is inserted so as to insert the tape cassette 1 along the first virtual 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 the broken line 36 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 a second imaginary line 37 shown in FIG. 2 that is perpendicular to the first imaginary straight line 35 on the - plane.

In FIG. 2, the intersection 38 of the first imaginary straight line 35 and the second imaginary straight line 37 is the substantial center of the tape cassette 1 in the first position (the midpoint of the reel hub 10.11),
The center of the tape cassette 1 at the second position is a point 37 that has been moved to the left along the second imaginary straight line 37 from the intersection 38.
It is a. As is clear from FIG. 3, the second position of the tape cassette 1 is a data conversion position where the magnetic head 23 contacts the magnetic tape 9 of the tape cassette 1.

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
5, and when the side surface 6 of the tape cassette 1 comes close to the stopper protrusion 39, the tape cassette 1 assumes the first position. After that, the cassette moving mechanism moves the second virtual direct! i37, 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
The tape cassette 1 is provided to prevent the tape cassette 1 from being inserted more than necessary along the imaginary straight line 35.

[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.
A cassette loading lever 44 having a pin 43 implanted therein as shown in FIGS. 10 and 11 is connected by a pin 45 to a loading lever 44 having a rotating arm configuration as shown in FIGS. 7 and 8. 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 48 for controlling the operation of the sliding plate 46. include.

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 the direction of the second imaginary straight line 37 in FIG. 2) in FIGS. 1 and 10. 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 bottom 52 extends parallel to the second virtual bottom 1137 in FIG.
is the second virtual bottom! ! Move in the direction of 37.

A loading lever 44 having a cassette pressing pin 43 at one end is attached to the main board 22 by 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 inserted into the hole 46a. Since the pin 45 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. Fixing pins 59a and 59b implanted in are inserted.

Therefore, the sliding plate 46 is the second virtual bottom:! ! It slides only in the direction parallel to 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 pushed 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, it prevents the pin 64 from moving to the right while the pin 64 is in contact with the fan-shaped blocking surface 65.

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 line 35 in the cassette eject state shown in FIGS. Press 61. 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, pin 4 of the loading lever 44
5 is pressed by the sliding plate 46, and the shaft 57 is pressed as shown in FIG.
Rotate clockwise around the cassette pressing pin 4.
3 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, rotave cassette 1 is
It is loaded in the second position shown in the figure, and the magnetic head 23 comes into contact with the magnetic tape 9. Also, the front side 4 of tape cassette 1
The positioning protrusion 40 contacts the second virtual bottom l! 37
positioning in the direction of is achieved. tape cassette 1 is 2
The cassette presser spring 67 fits under the two cassette presser springs 67 and is held on the substrate 22. Note that since the carriage 42 is connected to the low-day lever 44, the second imaginary straight line 37
along with the tape cassette 1.

[Reel axis movement and ejection altll] In this magnetic tape device, even when the tape cassette 1 is moved from the first position shown in FIG. 2 to the second position shown in FIG. 3, the pair of reel shafts 29.3o The reel shaft 29.30 does not rise automatically, so the reel shaft 29.30 must be manually raised to engage the hub 10.11.For this operation, there is an operating lever on the outside of the front plate 33 of the case 21. 68 are provided. The operating lever 68 is in the first angular position in FIG. 4 when in the eject state, and in the fifth angular position in the cassette loading state.
It is in the second angular position shown in the figure and in the third angular position shown in FIG. 6 when the reel shaft 29,30 is raised.

As shown in FIGS. 9 and 11, the connection mechanism between the operating lever 68 and the support substrate 26 of the tape traveling device 25 includes a rotating shaft 69, a pair of link arms 70, and a pair of link connecting rods (connecting plates). ) 71, a slider 72, a pin 73 for rotatably connecting the connecting rod 71 to the arm 70, and a pair of pins for connecting the connecting rod 71 to the slider 72, as shown in FIGS. 74 and three pins 75 for engaging the slider 72 with 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 extends parallel to the first imaginary straight line 35 .

The arm 70 constituting the link is fixed to the rotation @69,
A connecting pin 73 is provided at this 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 plates 78, 79 perpendicular to the substrate 22 and a connecting plate 80 parallel to the substrate 22.
．． 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 a main surface part 81 parallel to the main board 22, and the engagement pins 7
Two pieces 5 are provided on one side surface 82 and one piece 5 is provided on the other side surface 83.

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 imaginary straight line 37 shown in FIG. A pin 90 implanted in the substrate 22 is inserted into the elongated hole 88 . Therefore, the slider 72 is movable only in the direction of the second virtual straight line 1137 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, a pin 94 projecting from the lower surface of the loading lever 44 is configured to engage with a pin 96 of an arm 95 projecting from the rotating shaft 69, 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 is composed of an arcuate portion centered on the rotating shaft 69, and is formed to sandwich the pin 73 between its tip and the stopper 97. The position of the stopper 97 is set to prevent the center of the pin 73 from moving beyond a position slightly beyond the straight line connecting the center of the rotating shaft 69 and the center of the pin 74 from the bottom to the top. ing.

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 the loading lever 44 is rotated clockwise as shown in FIG. 8, the pin 94 protruding downward from the loading lever 44 presses the pin 96 of the arm 95 as shown in FIG. Turn 70 counterclockwise. 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 1 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
Once loaded at the position (data conversion position), turn the operating lever 68 clockwise to move it to the third angular position shown in FIG. Accordingly, the rotation arm 70 rotates counterclockwise as shown in FIG. 14, and the link connecting rod 71 rotates clockwise and is displaced to the right. As a result, the pin 74 of the slider 72 is pressed rightward by the connecting rod 71, the slider 74 moves rightward, and the operating lever 6
The rotational movement (angular displacement) of the slider 72 is converted into the linear movement of the slider 72. As a result, from the horizontal part 85 of the groove 87, the pin 7
5 is pulled out, and the pin 75 is pressed by the inclined portion 84 of the arm 87. Since the inclined portion 84 is formed downward to the right in FIG.
The support substrate 26 integrated into the vertical guide pin 92
be guided by. Pin 7 of link arm 70
Turn the operating lever 68 until 3 hits the stopper 97,
As shown in FIG. 14, the pin 7
5, and the support substrate 26 stops rising. Also,
In the state shown in FIGS. 14 and 15, the pin 73 is pressed in the direction of the stopper 97 at the tip of the elastic protrusion 98 based on the 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 pin 73 can be easily removed from the tip.

When the pin 75 of the support board 26 moves to the height shown in FIG. 14, the motor 27.28, reel shaft 29.30, and guide pin 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. This allows the tape 9 to run.

When ejecting the tape cassette 1, first move the operating lever 68 from the third angular position in FIG. 6 to the second angular position in FIG.
Rotate counterclockwise to the angular position. As a result, the reel shaft 29.30 and the guide pins 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 pin 7 is pushed down by the inclined portion 84 of the arm 87, and the pin 75 and the supporting substrate 26 integrated therewith are returned to the position shown in FIG. 13.

The operating lever 68 is moved 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 rotating shaft 69 presses the pin 94 of the loading lever 44 to the right in Figure 13 (to the left in Figure 8). . As a result, the loading lever 44
rotates counterclockwise in FIG. 8 and returns to the position shown in FIG. 7.

117-When the inverter 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 device 411] In order to prevent the recording on the tape 9 of the tape cassette 1 from being erased by mistake, a mechanism is provided to detect the presence or absence of the file protection (preventing erroneous erasure) 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 that is not rotatably engaged with the pin 104, and a photocoupler 11o.

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 has a portion 103a that has a long hole 106 and extends parallel to the second imaginary straight line 37, and a portion 103b that extends parallel to the first imaginary straight line 35. Although the portion 103b is almost hidden under the reset arm 105 in FIGS. 1 to 3, the portion 103b clearly shown in FIG. It has a tip 103c that protrudes toward the tape cassette 1 for detection.

As shown in FIG. 11, the file protection control arm 105 has a conical side surface and is rotatably supported by a shaft 107 that is not 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 105 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. If there is a claw 102, the tip 103c of the portion 103b
If there is little penetration and there is no claw 102, the part 10
As a result, the position of the file protection sliding plate 103 changes depending on the presence or absence of the claw 102, and the relationship with the photocoupler 110 arranged at the left end of the sliding plate 103 changes. It also changes, and an output corresponding to the presence or absence of the claw 102 can be obtained.

[Cleaning of the magnetic head] When cleaning the magnetic head 23 of this magnetic disk device, use the same cleaning cassette as disclosed in Japanese Utility Model Application Publication No. 174012/1983 to replace the tape cassette 1 with the magnetic disk. Load the device. The cleaning cassette is
Although it has a similar external shape to the tape cassette 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 by a second angular displacement W and ma shown in FIG. When loading the cleaning cassette, the reel shaft 29.30 and guide pin 31.3.2 do not automatically rise, as they do when loading the tape cassette 1. Therefore, the tip of the reel @ 29.30 does not move up for cleaning. Since the guide pins 31 and 32 do not protrude from both sides of the magnetic head 23, the magnetic head 23 can be easily moved with a cleaning cassette without being obstructed by the guide pins 31 and 32.
The gap surface can be cleaned. 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, move the operating lever 68 from the second angular position shown in FIG. 5 to the first angular position shown in FIG.
As a result, the cleaning cassette is ejected in the same way as 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 shaft 29.30 does not rise automatically and the reel l! II 29.30 damage does not occur.

(2) Since it is not necessary to automatically raise the reel shaft 29.30 upon completion of the movement of the tape cassette 1 from the first position to the second position, the structure of the elevating mechanism for the reel shaft 29.30 is changed. It can be simplified. In addition, since the conventional device was configured to raise the reel shaft using the force of a spring, a large operating force was 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 shaft 29, 30 is raised and lowered and the tape cassette 1 is ejected using a single operating lever 68, it is not only easy to operate, but also the operating portion can be simplified. can. Also, 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 operation 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 pin 43, file protection mechanism control pin 1
08. Since the pin 94 for associating with the rotating shaft 69 is provided, a plurality of mechanisms can be associated with a simple configuration.

(8) Since the file protection sliding plate 103 is placed overlapping the loading sliding plate 46, the guide pins 59a and 59b can be shared, and space can be used effectively.

(9) The cassette pressing pin 43 is provided with a pressing part 43a shaped like an inverted truncated cone, and this presses the boundary between the front surface 2 or the back surface 3 and the rear surface 5 of the tape cassette 1, so the tape cassette 1 is pressed against the substrate 22. The component of the force in the direction 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 pin 53 is inserted into the protruding part 51 to linearly guide the carriage 42, so that the structure of the guide part can be simplified and made smaller. has been achieved.

(11) As shown in FIGS. 14 and 15, the arm 70 is rotated to a position where the center of the pin 73 slightly passes the straight line connecting the center of rotation @69 and the center of the pin 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 pin 73 against the stopper 97, so that the position of the arm 70 and its related parts can be stably held.

(12) Since the elastic protrusion 98 is provided as shown in FIG. 15, the pin 73 is inserted between the tip of the elastic protrusion 98 and the stopper 97, and the pin 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, reel 1 NI29.30, and guide pin 31.3
Since the tape running device 25 is constructed integrally with the tape running device 2 mounted thereon, and all of these components are configured to move up and down in the same manner, the configuration of the tape running device 25 can be simplified.

``Modifications'' The present invention is not limited to the above-described embodiments, but can be modified as follows, for example.

(1) It is also applicable to 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, the reel shaft is engaged with the hub of the tape cassette by rotating the operating lever, which simplifies the movement ffi structure of the reel shaft. In addition, it is possible to prevent the movement of the reel shaft from occurring when the cleaning cassette is inserted. Therefore, the reel shaft does not collide with the cleaning cassette and is damaged, and since the reel shaft is moved by rotating the operating lever, the reel shaft can be easily moved with a small operating force.

According to the second aspect, in addition to obtaining the same effects as the first aspect, it is also possible to stably obtain the hub engagement position.

[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 the magnetic tape device loaded with a tape cassette, Fig. 4 is a front view of the magnetic tape device in the state 2 (!l), and the fifth country is the magnetic tape device in the state shown in Fig. A front view of the tape device. Figure 6 is a front view of the magnetic tape device after the reel shaft has been raised. Figure 7 is a state in which the tape cassette and file protector mechanism have been removed from Figure 2 and a portion of the board has been 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 board and this A plan view showing the tape running device on the lower side of the board and its elevating mechanism with the upper part removed; FIG. 10 is a cross-sectional view taken along line X-X in FIG. 1; FIG. 11 is a cross-sectional view of FIG. Fr side view showing a part of XI-XIII, Fig. 12 is a rear view showing the state before loading the cassette, as seen from the line Figure 14 is a rear view showing the same part as Figure 12 with the cassette fully loaded; Figure 14 is a rear view showing the same part as Figure 12 with the reel shaft raised; Figure 15 is the xv- 16 is a plan view of the tape cassette, and FIG. 17 is a front view of the tape cassette.・
Hub, 21... Case, 22... Board, 23...
Magnetic head, 25... Tape running device, 26... Support substrate, 27.28... Reel motor, 29.30.
...Sole axis, 31.32...Guide pin, 33...
・Front plate, 34...Cassette attachment/detachment opening, 35...
First virtual straight line, 37...Second virtual straight line, 42...
・Carriage, 43...Cassette pressing pin, 44・
...Loading lever, 46...Sliding plate, 47...
・Loading coil spring, 48... control rotating plate,
56...Subboard, 68...Operation lever, 69...
Rotation axis, 70...arm, 71...3! ! Box, 7
2...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. a magnetic head that converts a signal that is in contact with the magnetic tape; a pair of reel shafts for engaging with a hub of the tape cassette; and a motor for driving the pair of reel shafts. a rotationally operated operating lever; and a reel shaft moving mechanism formed such that, by rotating the operating lever, the reel shaft linearly moves from a hub separation position to a hub engagement position and vice versa. A cassette type magnetic tape device comprising: [2] The reel shaft moving mechanism includes a rotating shaft (69) to which the operating lever (68) is fixed.
), an arm (70) protruding from the rotating shaft (69), and a connecting rod (71) rotatably connected to the arm (70) and having a long hole (77). , the long hole (
It has a pin (74) inserted in the reel shaft (77), is guided to slide in a direction perpendicular to the extending direction of the reel shafts (29) and (30), and has an inclined groove (87), and has an inclined groove (87). a slider (72) associated with the rotating shaft (69) via the arm (70) and the connecting rod (71) so as to be linearly displaced in accordance with the angular displacement of the shaft (69); , supports the tape running device, is guided so as to be movable in the extending direction of the reel shafts (29) and (30), and has a portion (82) parallel to the slider (72).
), and this portion (82) has a pin (75) that is inserted into the inclined groove (87) of the slider (72), and the displacement of the slider (72) causes the reel shafts (10, 11) to
a support substrate (26) formed to raise and lower the reel shafts (29) and the slider (72) corresponding to the movement of the reel shafts (29) and (30) from the hub engagement position to the hub separation position.
a spring (91) that applies a biasing force in the moving direction to the slider;
), when moving the reel shafts (29, 30) from the hub separation position to the hub engagement position, the rotation shaft (69)
and the center of the pin (74) of the slider (72) is a straight line connecting the center of the pin (73) of the arm (70).
2. The cassette type magnetic tape device according to claim 1, further comprising a stopper (97) that prevents rotation of the arm (70) at a point slightly beyond the center of the cassette type magnetic tape device.