JPS62231451A - Magnetic tape device - Google Patents

Abstract

PURPOSE:To surely prevent the generation of malfunction that a tape cartridge is extracted in error by providing a pushing member and releasing the lock of a housing drive plate by a lock member in interlocking with the reader block pushing operation of the pushing member. CONSTITUTION:A reader block handling mechanism 9 is provided between a housing drive plate 4 and a winding reel 6, which extracts the reader lock 7 fixed to the tip of a magnetic tape in the tape cartridge 2, inserts the block 7 to the insertion groove 8 of the winding reel 6 in starting recording/ reproducing the information to/from the magnetic tape, extracts the reader block 7 from the insertion groove 8 at the end of information recording/ reproduction and restores it into the tape cartridge 2. Further, while the reader block 7 is extracted from the tape cartridge 2, the drawing of the tap cartridge 2 from the housing 3 is prevented and the drawing of the tape cartridge 2 from the housing 3 is allowed when the reader block 7 is restored into the tape cartridge 2 by the lock mechanism 10.

Description

[Detailed Description of the Invention] [Industrial Application Separation] The present invention provides a tape cartridge that is suitable for use in backing up small magnetic disks, is easy to handle as a recording medium, and has a relatively large recording capacity. Regarding the magnetic tape device used, especially in a magnetic tape device of the type that performs recording and playback by pulling out the magnetic tape from the tape cartridge, the magnetic tape is completely inserted into the tape cartridge.
This invention relates to a mechanism that allows a tape cartridge to be taken out only when it is rewound.

(Prior art and its problems) Magnetic tape as a storage medium for storing information has been well known. In particular, as an external main storage device for large-scale, high-speed computers, or as a backup storage device for magnetic disks used in this type of computer, a storage system in which a long multi-track tape with a larger capacity than before is wound around a large-diameter tape reel. The medium is well known and still in use. However, with this kind of magnetic tape wound on a large-diameter tape reel, it is relatively troublesome to install it in a storage device, and the storage device also becomes large.

In addition, the magnetic tape stored in a tape reel case and carried around is relatively expensive and has poor portability.Furthermore, when the tape reel is removed from the case, the tape sometimes comes undone, resulting in poor handling.

On the other hand, tape cartridges and tape cassettes have already been developed to facilitate handling,
It is mainly used in the field of R'9.

The magnetic tape of this tape cartridge has a wider tape width than the magnetic tape of the tape cartridge 1-, so it has a larger storage capacity and is suitable as an information storage medium for computers.

By the way, the mainstream of conventional tape cartridges is the well-known audio cartridge, which has an endless tape inside and runs a magnetic tape inside the cartridge.
Although it is easy to handle, a portion of the magnetic tape is always exposed at the front of the cartridge, which prevents Ia!
Information recording for computers that requires maintenance of highly reliable stored information, as there is a risk of damage to the tape due to carelessness, dirt from fingers, and loss of stored information in early dew areas. It was unsuitable as a medium. In addition, there was a certain limit to increasing the speed due to the fact that the endless tape was run within the cartridge.

Therefore, a tape cartridge described in JP-A-58-171773 was developed as a tape cartridge suitable for recording and reproducing information by pulling out the rightmost magnetic tape in the cartridge from the cartridge. In the tape cartridge of this publication, a leader block is attached to the leading end of the magnetic tape, and by leading out the leader block, the magnetic tape is brought out to the outside and brought into sliding contact with the head. For example, 18 to 2 in the width direction.
It can record information for 4 tracks. The magnetic tape stored in such a tape cartridge has a storage capacity of about 100 to 300 megabytes per cartridge, and the storage medium is easy to handle and portable, and the storage device can be made smaller. It is suitable as a backup file for small hard magnetic disks, floppy disks, etc., and it is desired to make effective use of it.

On the other hand, a magnetic tape device has been developed to perform information storage processing using this tape cartridge. This magnetic tape 5A unit has functions such as storing the tape cartridge, leading the league block into and out of the cartridge, and allowing the magnetic tape to run freely between the take-up reel and the cartridge. It is required to have various functions.

Furthermore, in this type of magnetic tape device, after the work is completed, the tape cartridge must be pulled out of the housing and stored in a predetermined location.

However, if the tape cars 1 to 2 are pulled out from the housing while the league block is pulled out of the housing together with the magnetic tape, the magnetic tape pulled out from the housing will be activated during extrusion. There is a risk that the magnetic tape may be damaged by various structural members, or may be cut if the tape is not sharp. When a magnetic tape is damaged in this way, it becomes impossible to reproduce the information stored on the magnetic tape, reducing reliability.

Furthermore, when the magnetic tape is cut, it is necessary to disassemble the magnetic tape device in order to remove the leader block remaining in the magnetic tape 40 device, which is a cumbersome task. There were inconveniences such as the device itself becoming unusable for a long period of time. Furthermore, if the tape cartridge is forcibly pulled out of the housing, there is a risk that the mechanism holding the leader block will be subjected to excessive stress and become biased.

[Purpose of the invention]

The present invention has been made in view of these points, and detects when the league block is completely retracted (pushed) into the tape cartridge i-ridge, and the magnetic tape cartridge can be taken out from the housing. To provide a magnetic tape device which can reliably prevent the occurrence of malfunctions such as erroneously removing a tape cartridge when a leader block or magnetic tape is being pulled out from the tape cartridge, and which has high operational reliability. With the goal.

(The tape cartridge extrusion device referred to in the magnetic tape loading device d of the detailed description of the invention is a device for pushing out a tape cartridge, which moves a tape cartridge wound around a tape reel disposed inside a tape cartridge together with a leader block attached to the tip of the tape cartridge. In a magnetic tape device that records and reproduces information using a drawer and a magnetic head, the tape cartridge is housed in a raised position where the tape cartridge can be inserted and taken out, and a lowered position where a tape reel in the tape cartridge can be driven. A housing that selectively takes 1 FIe back and forth to raise and lower the housing, and a housing drive plate that moves Ps in one direction to cause the housing to take a lowered position. A locking member that prevents the housing drive plate from sliding in the other direction, and a pushing member that pushes the leader block into the tape cartridge at the end of writing/reading, the pushing member interlocking with the leader block pushing operation of the pushing member. The present invention is characterized in that the housing drive plate is unlocked by the lock member.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 is an exploded perspective view of the entire magnetic tape device of the present invention, and FIG. 3 is a plan view of the assembled state.

In the figure, the symbol @1 is a substantially rectangular board, and near one end of the board 1 there is provided a housing 3 that accommodates a tape cutridge 2, and a housing drive plate 4 that drives the housing 3 up and down. . Also, near the other end of the board 1, there is a tape reel 5 (FIG. 3B) in the tape cutridge 2.
A take-up reel 6 is provided for winding up a magnetic tape (not shown) wound around the magnetic tape. Between the housing drive plate 4 and the take-up reel 6, information is recorded on the magnetic tape.
When starting playback, the leader block 7 fixed to the leading end of the magnetic tape in the tape cartridge 2 is removed from the tape cartridge 2 and inserted into the insertion groove 8 of the take-up reel 6.
A leader block handler IIIO2 is provided for inserting the leader block 7 into the tape cartridge 2, and taking out the leader block 7 from the insertion groove 8 and returning it to the tape cartridge 2 when recording/reproducing information is completed.

Moreover, between the housing drive plate 4 and the take-up reel 6,
When the leader block 7 is taken out from inside the tape cartridge 2, it prevents the tape cartridge 2 from being pulled out from the housing 3, and when the leader block 7 is returned into the tape cartridge 2, the tape cartridge 2 A locking mechanism 10 is provided that allows the device to be pulled out from the housing 3.

To further explain this embodiment, the housing drive plate 4 is disposed on the substrate 1 in a predetermined slidable manner in the direction of the arrow X in FIG. Rising portions 11°11 of the shape are erected in parallel. A pair of guide plates 12.12 of the same shape are provided upright on each rising portion 11 at intervals in the horizontal direction, and kite grooves 13.13 of the same shape are provided in both guide plates 12.12 in the same direction. It is formed. Each kite groove 13 includes an upper horizontal groove 13a with open ends, and an inclined groove 13b communicating with the inner end of the horizontal groove 13a and extending obliquely downward. The housing drive plate 4 is always urged in the direction of protrusion from the substrate 1 (in the direction of arrow X in FIG. 1) by a tension spring 14 stretched between the housing drive plate 4 and the substrate 1.

The housing 3 is provided above the housing drive plate 4, and the housing 3 has a substantially U-shaped cross section that is open downward, and has a frontage 3A at both ends.
It is arranged so as to be located in the longitudinal direction of the 3BS record board 1. A pair of bins 16.16 (only one of the bins 15 on one side wall 15 is shown) protrudes from both side walls 15.15 of the housing 3 at intervals in the horizontal direction. The distance between the two bins 16.16 on one side wall 15 is the same as that of the one side wall 15. ! The distance between the two guide plates 12.12 at 1ls11 is made equal to the distance between the two guide plates 12.12. A bottle 16 of the housing 3 is supported by the guide member 13 of each guide plate 12, and the housing 3 has a guide member 17 protruding from the side wall 15 and a bottle (not shown) provided upright on the base plate 1. 2) to allow only vertical and downward movement.

As a result, as the housing driving plate 4 moves in the longitudinal direction of the substrate 1, the housing 3 is elevated so that each bin 16 follows the guide plate 13 of each guide plate 12. Furthermore, the housing 3 is formed so as not to come into contact with the housing drive plate 4 even at its lowest position. Furthermore, support pieces 18.18 are provided at the lower end of each side wall 15 of the housing 3 to project horizontally inward. It is therefore possible to hold the tape ridge 2 within the housing 3, with both ends of the tape ridge 2 being supported on these support pieces 18,18. Further, an eject lever 19 is mounted in the vicinity of the opening 3B on the upper surface of the housing 3 near the take-up reel 6 with a pivot 20 so as to be able to swing freely in a horizontal plane. A bottle 21 is provided on the bottom surface to protrude downward. Further, an arcuate groove 22 is provided on the upper surface of the housing 3 so as to communicate with the opening 3B for allowing movement of the bin 21 of the lever 19.

The ink lever 19 is biased counterclockwise in FIG. 1 by the elasticity of the tension spring 23 stretched between it and the housing 3, that is, in the direction of pushing out the tape cut ridge 2 from the housing 3. ing.

Further, a tape reel driving motor 24 for driving the tape reel 5 of the tape cut ridge 2 is vertically installed on the substrate 1 below the housing 3 and the housing driving plate 4. A face gear (a crown gear-like end face gear) 25 is fixed to the output shaft facing vertically upward. This front gear 25 has an annular southern portion 26 formed at its upper end, and this mountain portion 26 passes through the center opening 4A of the navigation housing drive plate 4 and is located above the housing drive plate 4. .

Further, the take-up reel 6 is formed to be driven by a take-up reel driving motor 27 vertically disposed on the substrate 1.

The league block handling mechanism 9 is formed as follows. That is, a flat plate-shaped fixed cam 29 is horizontally disposed on the base plate 1 in contact with the housing 3 by means of a support 28 at a position higher than the take-up reel 6. A rotary shaft 30 is rotatably supported on the fixed cam 29 via a bearing (not shown), and an arm 31 is fixed to the rotary shaft 30. As shown in FIG. 2, this arm 31 has a large long groove 33 which is countersunk in the upper part of the elongated groove 32 that extends in the longitudinal direction of the arm 31 through four vertically extending grooves.
is formed. Inside this wide 1llt 33, an elongated plate-shaped slide body 34 is mounted on the wall portion forming the narrow side 32. It is set up so that it can be operated freely. A pivot shaft 35 is vertically provided on the base plate of the slide body 34 and extends downwardly through the taraman 33. A cam member 37 of the fixed cam 29 is attached to a portion of the pivot shaft 35 that protrudes from the lower surface of the arm 31. Cam roller 36 to be transferred is installed rotatably [
is being pulled. Further, a holding bin 38 for holding and moving the league block 7 of the tape cut ridge 2 is vertically provided on the lower surface of the tip end of the slide body 34. This holding bottle 38 has a large diameter holding part 40 that fits into the league block 7 connected to the lower end of a small diameter shaft part 39 that passes through the I long groove 32 of the arm 31. By determining the vertical relative positions of the leader block 7 to have a predetermined positional relationship, the league block 7 can be freely moved toward and away from the holding part 40 of the holding bin 38 in the horizontal direction, or the holding part 40 of the holding bin 38 can be moved freely toward and away from the holding part 40 of the holding bin 38 And the league blocks 7 can be moved integrally in the horizontal direction. Since the structure of such a leader block 7 is well known, detailed illustration thereof will be omitted.

Further, an arm cover 41 is attached to the upper part of the arm 31 to prevent the slide body 34, the cam roller 36, and the holding bottle 38 from moving upward from the Tara groove 33. A tension spring 42 is stretched between the end of the protrusion 418 that protrudes further rearward and the slide body 34, and the elasticity of the tension spring 42 causes the force holder 036 to always come into elastic contact with the cam surface 37. A spur gear 43 is fixed to a portion of the rotating shaft 30 that protrudes downward from the fixed cam 29, and this spur gear 43 is connected to a motor vertically disposed on the base plate 1 on the side of the fixed cam 29. The motor 44 meshes with a spur gear 46 fixed to an output shaft 45 of the motor 44. Therefore, the drive of the motor 44 is transmitted to the motor 31 after being somewhat decelerated.

When this arm 31 rotates around the rotating shaft 30,
The cam roller 36 moves while shifting (to the cam surface 37), and this cam surface 37 moves the league block 7 held by the holding bin 38 via the cam roller 36 and the slide body 34 to a predetermined position in the housing 3. Remove the tape from the fully retracted position in the tape cartridge 2 inserted in the position,
After that, the shaft part passes outside the magnetic head 47 fixed to the substrate 1 and is inserted into the insertion position in the insertion groove 8 of the take-up reel 6 which is waiting at a predetermined rotation stop position. The shape is chosen to draw a particular curve.

Further, the locking mechanism 10 is fixed to the base plate 1 between the take-up reel 6 and the housing drive plate 4 with a fixed base 48. A tenth lever 49 for restraining and releasing the outward protrusion of the housing drive plate 4 is pivotally attached to the fixed base 48 so as to be swingable in a horizontal plane with a pivot 50. A 20th lever 51 that restrains and releases the pushing into the shaft 5
2 so that it can swing freely in a horizontal plane. One of the tenth levers 49 is operated by a tension spring 54 stretched between the vertical piece 53 bent and formed on the fixed base 4B.
A rotational force about the Y direction in FIG. 1 is applied. The other 20th lever 51 is applied with a counterclockwise rotational force in FIG. 1 by a tension spring 56 stretched between it and a vertical piece 55 which is also bent and formed on the fixed base 48. One of the tenth levers 49 includes a low short pin 58 that engages with and disengages from a stepped portion 57 formed on the locking mechanism 10 side of the housing drive plate 4 that restricts the outward protrusion of the housing drive plate 4, and an eject lever 19. A tall elongated bottle 59 that engages with the tip of each is erected. The other 20th lever 51 has a short short pin 61 that engages with and disengages from a stepped portion 60 that is also formed on the locking mechanism 10 side of the housing drive plate 4 and restricts the housing drive plate 4 from being pushed into the inner part.
A tall elongated bottle 62 that engages with the arm 31 is erected.

Further, as shown in FIGS. 3A and 3B, the league block 7 is placed on the substrate 1 near the league block 7 housed in the tape cutridge 2 housed in a predetermined position in the housing 3. A guide 63 is provided to guide the insertion and insertion from the tape cartridge 2.

Next, the operation of the embodiment described above will be explained.

FIG. 3 shows an initial state in which the tape cartridge 2 is not yet inserted into the housing 3 of FIG.
It is pushed to the back (Y direction in Figure 1) against the elasticity of 4.
Short pin 58 of the tenth lever 49 of the locking mechanism 10
is engaged with the stepped portion 57, so that the housing drive plate 4
is restrained from protruding outward. Therefore, each bottle 16 protruding from each side wall 15 of the housing 3 is connected to the guide plate 1.
The housing 3 is held in the floating position by engaging with the horizontal fi 13a of the guide groove 13 of No. 2. Further, the eject lever 19 is moved into the arcuate groove 2 by the elasticity of the tension spring 23.
It is drawn to the deepest part of 2. Further, the arm 31 is stopped by a motor 44 at position n in the figure. Of course, the holding bottle 38 (shaft portion 39 thereof), which is vertically disposed at the tip of the slide body 34 supported by the arm 31, is attached to the housing 3.
The arm 31 is positioned so that it can engage with the league block 7 of the tape cartridge 2 that is being inserted therein. Further, the long bottle 62 of the 20th cut lever 51 is pressed against the long bottle 62 by this arm 31, and is pressed clockwise in the figure against the elasticity of the tension spring 56, and the short bottle 61 of the 20th cut lever 51 is pressed against the long bottle 62 by the arm 31. FB 6
It's off from 0.

In such a situation, this magnetic tape device can
In order to record/reproduce information on the magnetic tape of the tape cartridge 2, the tape cartridge 2 is inserted through the opening 3A with its league block 7 portion facing toward the back of the housing 3.

As the tape cartridge 2 is inserted further, the leading end surface of the tape cartridge 2 is pushed into the bin 21 of the eject lever 19.
comes into contact with. Thereafter, the tape car 1-1] is pushed in while the eject lever 19 is rotated clockwise in FIG. 3A around the pivot 20 against the elasticity of the tension spring 23. As the rotation of the eject lever 19 progresses, the tip of the eject lever 19 comes into contact with the long bottle 59 of the tenth lever 49 of the lock amio. Thereafter, the eject lever 19 is rotated against the elasticity of the tension spring 23 and the tension spring 54, and the tenth lever 49 is rotated clockwise in the figure. When the tenth lever 49 rotates, the short bottle 58 moves in a direction in which it is disengaged from the stepped portion 57 of the housing drive plate 4 . When the tape cartridge 2 is inserted until just before the short bottle 58 escapes from the stepped portion 57, the league block 7 of the tape cartridge 2 is inserted into the arm 3.
111 on the small diameter shaft portion 39 of the holding bottle 38 supported by
Be @ed.

Thereafter, when the tape cartridge 2 is further pushed in and the short bottle 58 of the tenth lever 49 is completely removed from the stepped portion 57 of the housing drive plate 4, the housing drive plate 4 is moved outward as shown in FIG. 3B. The restraint on the protrusion is now released, and the housing drive plate 4 moves outward 1 by the elasticity of the tension spring 14. As the housing driving plate 4 moves outward, each bottle 16 of the housing 3 descends along the inclined groove 13b of each guide plate 12, and together with this, the housing 3 and the tape stored therein are moved downward. Cartridge 2 also descends.

Then, when each bottle 16 reaches a''FG of the inclined groove 13b of each guide plate 12, the lowering operation of the housing 3 is completed. A front gear (not shown) attached to the lower surface of the tape cartridge meshes with the front gear 25 facing inside the housing 3. At the same time, the leader block 7 of the tape cartridge 2 is fitted into the holding part 40 at the lower end of the holding bin 38. Together, they are connected, and the holding bin 38 and leader block 7 can move together in the horizontal direction.

When an appropriate sensor (not shown) detects that the state shown in FIG. It rotates counterclockwise in the figure. As a result, the slide body 34 held by the arm 31 moves while moving the cam roller 36 along the cam surface 37. The holding bin 38 will also move together with this slide body 34,
As a result, as shown in FIG. 4, the leader block 7 moves from the completely retracted position in the tape cartridge 2 to
, D while being guided by the guide 63. Thereafter, as the arm 31 rotates, the leader block 7 held in the holding bin 38 moves the magnetic tape wound around the tape reel 5 in the tape cartridge 2 (not shown) as shown in FIG. 3C. Move while pulling out. At this time, the tape reel 5 is connected to the tape reel via the front gear 25! ! By slowing down the rotation of the A-auxiliary motor 24, a play 4 is applied to the rotation of the tape reel 5, so that the magnetic tape is brought into a tensioned state and pulled out. Further, when the arm 31 starts to rotate counterclockwise in the n1 direction from the state shown in FIG.
Rotate in the anti-n, 1f11 direction around 2, and rotate as shown in Fig. 3C.
As shown in FIG. 1, the short bottle 61 is engaged with a stepped portion 60 formed on the housing drive plate 4 and held in that state.

As a result, when the leader block 7 is pulled out from the tape cartridge 2 by the arm 31, even if an attempt is made to push the housing drive plate 4 inward, the stepped portion 60 of the housing drive plate 4 is pulled out from the 20th lever 51 of the locking mechanism 10. By engaging with the short bottle 61, the pushing is prevented. Therefore, when the magnetic tape of the tape cartridge 2 is being pulled out, an accident may occur, such as accidentally pushing the housing drive plate 4 to the back, causing the tape cartridge 2 to float together with the housing 3, and exposing the magnetic tape to a bright spot. Never.

Then, when the arm 31 is further rotated counterclockwise from the state shown in FIG. As shown, the leader block 7 passes outside the magnetic head 47 and the guide pillow 4, and is inserted into the insertion groove 8 of the take-up roll 6, which is waiting. In order to make the take-up reel 6 wait at a predetermined position n, it is preferable to detect the index display provided on the take-up reel 6 with a suitable sensor, and to stop the take-up reel driving motor 27 and move it away. . When the holding bin 38 coincides with the center of the take-up reel 6, an appropriate sensor (not shown) is activated.
detects this and stops driving the motor 44.

In this state, in order to perform recording/reproduction on the magnetic tape by the magnetic head 47, the take-up reel drive motor 27, which rotates the take-up reel 6, and the tape cartridge 2 are activated by pressing a button (not shown) or the like. The tape reel drive motor 24 that rotationally drives the tape reel 5 is driven at high speed to pull out the magnetic tape wound around the tape reel 5 from the tape cartridge 2 and bring it into contact with the magnetic head 47. and wind it onto the take-up reel 6. At this time, the rotational speed of both motors 24 and 27 is set to f, l1tIl so that the speed of the magnetic tape fed out from the tape reel Sbs is slightly slower than the speed at which the take-up reel 6 winds the magnetic tape. By always running the magnetic tape in a tensioned state, stable running of the magnetic tape and highly accurate recording/reproduction in the magnetic head 47 can be performed. (The leader block 7 rotates around the holding bin 38.)

In this way, when all the magnetic tapes wound on the tape reel 5 are wound onto the take-up reel 6, both motors 24 and 27 are automatically or by pressing the return button.
is reversed, and the magnetic tape wound on the take-up reel 6 is wound onto the tape reel 5. At this time, in order to ensure that the magnetic tape is always running under tension, the number of revolutions of both motors 24 and 27 must be set so that the speed at which the tape reel 5 winds the magnetic tape is higher than the speed at which the magnetic tape is fed out from the take-up reel 6. tJllllI is set so that the speed of Note that it is also possible to perform recording/reproduction on the magnetic tape using the magnetic head 47 when the magnetic tape is running backward from the take-up reel 6 to the tape reel 5.

Then, the magnetic tape wound on the take-up reel 6 is completely unwound, and the number of rotations of the take-up reel 6 at the time of unwinding is counted, and an appropriate tape end sensor, such as the arm 31, is activated. The drive of the take-up reel drive motor 27 is stopped by detecting a slight rotation clockwise due to tension using a mechanical sensor (not shown) or a photo sensor. The take-up reel 6 is stopped at the standby position shown in FIG.

At this time, the tape reel drive motor 24, which rotates the tape reel 5, continues to drive at a reduced speed to apply tension to the magnetic tape, and the motor 44, which rotates the arm 31, rotates in the opposite direction to that described above. Start driving. Then,
The cam roller 36 supported by the arm 31 rolls along the cam surface 37 and moves in the opposite direction to that described above. Along with this movement of the arm 31 and cam roller 36, the holding bin 38 and the leader block 7 held therein are moved completely opposite to the book! II I'll go. That is, the leader block 7 is first led out from the insertion fM 8 of the take-up reel 6, and then the guide bin 64 and the magnetic head 4
7, and when it passes through the state shown in FIG. 3C, it is pulled back into the tape cartridge 2 while being guided by the guide 63 in the order from D to A in FIG. And the third
As shown in FIG. B, the leader block 7 is completely retracted into the tape cartridge 2. This completely retracted state of the leader block 7 into the tape cartridge 2 is detected by an appropriate sensor (
(not shown)
4 is stopped. In addition, before the leader block 7 is completely retracted into the tape cartridge 2, the arm 31 is rotated clockwise as shown in FIG. As the housing drive plate 4 is rotated clockwise against the elasticity of the tension spring 56, it engages with the stepped portion 60 of the housing drive plate 4 and prevents the housing drive plate 4 from being pushed inwards.
The short bottle 61 of the zero lever 51 moves from the stepped portion 60 in the escape direction. Then, at the same time as the lead tab 7 is completely retracted into the deep cartridge 2, the short bottle 61 is completely removed from the stepped portion 60 as shown in FIG. 3B. This allows the housing drive plate 4 to be pushed inward.

In this state, in order to take out the tape cartridge 2 from the housing 3, the housing drive plate 4 is pulled up by the tension spring 14.
push it inwards against the elasticity of the As a result, each bin 16 of the housing 3 rises along the inclined groove 13b of each guide plate 12, and along with this, the housing 3 and the tape cartridge 2 also rise, and the lower surface of the tape reel 5 of the tape cartridge 2 The meshing between the gear and the front gear 25 disposed on the substrate 1 is released. When each bin 16 reaches the top end of the inclined groove 13b, the housing 3 and tape cartridge 2 stop rising, and the league block 7 of the tape cartridge 2 is disengaged from the holding part 40 of the holding bin 38. The tape cartridge 2 is in a TI-fitted state on the small-diameter shaft portion 39, and there is no force restraining the tape cartridge 2 itself within the housing 3. As a result, the ink lever
19 moves in the counterclockwise direction in FIG.
The tape cartridge 2 is pushed by a bottle 21 protruding from the lower surface of the tip of the lever 19, and is pushed out from the opening 3A of the housing 3. Then, when the housing drive plate 4 is further pushed in, the tenth lever 49 of the locking mechanism 10 is pulled by the elasticity of the tension spring 54.
It engages with the stepped portion 57 of the housing drive plate 4, restraining the housing drive plate 4 from protruding outward, and returns to the initial state shown in FIG.

J3, in the above embodiment, in order to prevent the housing drive plate 4 from being pushed into the back when the league block 7 is pulled out from inside the tape cartridge 2, the 20th lever 51 of the locking mechanism 10 is installed. However, the structure for preventing the housing drive plate 4 from being pushed inward may be modified in various ways as necessary.

For example, when the arm 31 returns from the state shown in FIG. 3C to the state shown in FIG. Then, the push-in prevention pin (not shown), which had been engaged with the housing drive plate 4 and was preventing the housing drive plate 4 from being pushed inward, is moved in the direction of disengaging it from the housing drive plate 4. It may be formed so as to

(Effects of the Invention) Since the magnetic tape device of the present invention is constructed and operates as described above, the magnetic tape cartridge can be taken out from the housing only when the league block is completely retracted into the tape cartridge, and the leader block or when the magnetic tape is being pulled out from the tape cartridge.
It is possible to reliably prevent malfunctions such as erroneously pushing out the tape cartridge, and the reliability of the operation is also improved.

[Brief explanation of drawings]

The drawings show an embodiment of the magnetic tape 5A according to the present invention, in which Fig. 1 is an exploded perspective view of the whole, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 A to C. 4 is a plan view of the entire structure showing the state in which each part has moved, FIG. 4 is a plan view showing the leader block being taken out and inserted into the tape cartridge, and FIG. FIG. 3 is a plan view showing the state of the bin and the fixed cam. 1...M board, 2...tape cartridge, 3...
Housing, 4... Housing drive plate, 5... Tape reel, 6... Take-up reel, 7... Leader block, 8... Insertion 1, 9... League block handling mechanism, 10 ...Lock mechanism, 13...Guide full, 1
6... Bottle, 19... Eject lever, 24...
- For tape reel drive: [-ta, 27... Take-up reel drive motor, 29... Fixed cam, 31... Arm, 34... Slide body, 36... Camco 1'', 37
...Cam surface, 38 River holding bottle, 40... Holding part, 4
4... Motor, 47... Magnetic head, 49... 10th lever, 51... 20th lever, 57...
...Stepped portion, 58...Short bottle, 60...Stepped portion, 61
...Short bottle, 63...Guide.

Claims (1)

[Claims] In a magnetic tape device, a tape wound on a tape reel disposed in a tape cartridge is pulled out together with a leader block attached to the leading end of the tape, and information is recorded and reproduced by a magnetic head. a housing that selectively takes a raised position where the tape cartridge can be inserted and removed and a lowered position where the tape reel in the tape cartridge can be driven; and a housing that slides back and forth to raise and lower the housing. a drive plate; a locking member that prevents the housing drive plate from sliding in the other direction when the housing drive plate slides in one direction to cause the housing to take a lowered position; 1. A magnetic tape device comprising: a pushing member for pushing a leader block into a tape cartridge; and a housing drive plate is unlocked by the locking member in conjunction with the leader block pushing operation of the pushing member.