JPH01292662A - Loading mechanism for magnetic tape device - Google Patents

Abstract

PURPOSE:To realize the miniaturization of a loading mechanism by constituting the shape of a guide on which a guide piece provided on a rotary arm is moved as being in contact with it so that a pin engaged with a leader block moves as drawing nearly a circular arc shape. CONSTITUTION:When a cartridge 23 is set, the leader block 21 is engaged with the pin 29 provided on the rotary arm 30 of a plate 26, and the plate 26 is driven to rotate counterclockwise by a motor 25, and the pin 29 engaged with the leader block 21 moves between the cartridge 23 and a machine reel 24 as drawing nearly the circular arc shape by the guide piece 28 moving as being in contact with the guide 27, and the leader block 21 is set in the machine reel 24. Thus, by constituting the shape of the guide 27 so that the pin 29 moves between the cartridge 23 and the machine reel 24 as drawing nearly the circular arc shape, the miniaturization of the loading mechanism is realized.

Description

[Detailed Description of the Invention] [Summary] Regarding a magnetic tape loading mechanism used in a magnetic tape device of a computer, the purpose of the present invention is to provide a loading mechanism for a magnetic tape device that can reduce the size of the device, and has a leader block at the tip. A cartridge containing a magnetic tape attached thereto, a plate rotatably disposed near a machine reel for winding the magnetic tape in the cartridge and rotationally driven by a motor, and a plate disposed outside the plate. The guide includes a guide, a guide rotatably mounted on the plate and moving while abutting the guide, and a rotating arm provided with a pin that can be engaged with the leader block, and the guide has a shape. The rotation of the plate causes the pin to move between the cartridge and the machine reel in a substantially circular arc shape.

[Industrial Field of Application] The present invention relates to a magnetic tape loading mechanism used in a computer magnetic tape device.

Some computer magnetic tape devices use a cartridge containing a magnetic tape with a double lock attached to the tip. This device is provided with a loading mechanism that pulls out the leader block to the machine reel and locks it to the machine reel when the cartridge is released.There is a demand for downsizing of this loading mechanism.

[Prior Art] Next, a conventional magnetic tape loading mechanism will be described with reference to the drawings. FIG. 5 is a block diagram showing a conventional magnetic tape loading mechanism, and FIG. 6 is a perspective view of the cartridge shown in FIG.

In the figure, 1 is a cartridge containing a magnetic tape 2, and 3 is a leader block attached to the leading end of the magnetic tape 2. Reference numeral 4 denotes a machine reel that winds up the magnetic tape 2 inside the cartridge 1. Reference numeral 5 denotes a guide plate provided on the opposite side of the machine reel 4 to the cartridge 1, and has a guide groove 5a carved therein as shown in the figure. 6 is rotatably arranged on the guide plate 5, and connected to a motor (not shown).
A first arm 7 that is rotationally driven is pin-coupled to the rotating end of the first arm, and a leader block 3 is attached to the rotating end.
The second arm is provided with a pin 8 that can be engaged with the second arm.

Further, a third arm 9 is attached to the intermediate portion of the first arm 6, and a fourth arm 10 is attached to the intermediate portion of the second arm 7 using pins. 9 and the fourth arm 10 are connected with a pin, and the first arm 6
, second arm 7, third arm 9 and fourth arm 1
A four-node rotation chain is formed with 0. 4th arm 1
A guide pin 11 that engages with the guide groove 5a is provided on the lower surface of the guide pin 11 in a protruding manner. 12 is a tape guide; 13 is a magnetic head disposed between the two tape guides 12 to read and write data on the magnetic tape 2; and 14 is a tension roller that applies tension to the magnetic tape 2.

Next, the operation of the above configuration will be explained. First, cartridge 1
into the magnetic tape device. When the cartridge 1 is set, the pin 8 provided at the tip of the second arm 7 engages with the leader block 3. And the first
The arm 6 rotates counterclockwise in the figure. Then, the pin 8 moves while drawing a trajectory T by the pin 11 that engages with the guide groove 5a, and guides the leader block 3 to the leader block engagement groove 4a of the machine reel 4. Then, the leader block 3 engages with the machine reel engaging groove 4a of the machine reel 4. Next, when the machine reel 4 rotates a predetermined amount clockwise in the figure, the magnetic tape 2 becomes as shown by the two-dot chain line in the figure, a predetermined tension is applied, and the loading of the magnetic tape is completed.

[Problem to be solved by the invention] In the conventional example with the above configuration, the arm is 6.7° 9.10°
．． Since the magnetic tape 2 is loaded by rotating approximately once, there is a problem in that the device becomes large.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to improve the loadability of a magnetic tape device that can reduce the size of the device.
The aim is to provide 1m.

[Means for Solving the Problems] FIG. 1 is a diagram showing the principle configuration of the present invention. In the figure, 21 is a leader block, 22 is a magnetic tape having the leader block 21 attached to its tip, and 23 is a cartridge containing the magnetic tape 22. 24 is a machine reel for winding the magnetic tape 22 in the cartridge 23; 26 is a plate rotatably disposed near the machine reel 24 and rotationally driven by a motor 25; 27 is a guide disposed outside the plate 26; 28 is a guide 28 rotatably mounted on the plate 26 and moves while abutting the guide 27; and a pin 29 that can be engaged with the leader block 21.
It is a rotating arm provided with. And guide 27
The shape of the pin 29 is selected so that the rotation of the plate 26 causes the pin 29 to move between the cartridge 23 and the machine reel 24 while drawing a substantially circular arc shape.

[Operation] In FIG. 1, which is a diagram showing the basic structure of the present invention, first, the cartridge 23 is set in a magnetic tape device. Then,
The leader block 21 engages with a pin 29 provided on the rotating arm 30 of the plate 26.
6 is rotationally driven by a motor 25 in a counterclockwise direction in the figure. Then, the pin 29 engaged with the leader block 21 moves in a substantially arc shape between the cartridge 23 and the machine reel 24 due to the guide element 28 moving while contacting the guide 27 (indicated by a chain line in the figure). , the leader block 21 is set on the machine reel 24.

[Example] Next, an example of the present invention will be described using the drawings. Second
The figure shows one embodiment of the present invention.
The side configuration diagram in the figure, and FIG. 4 is a diagram explaining the operation in FIG. 2.

First, the configuration of this embodiment will be explained using FIGS. 2 and 3. 41 is a leader block, 42 is a magnetic tape having the leader block 41 attached to its tip, and 43 is a cartridge in which the magnetic tape 42 is placed. As shown in FIG. 3, this cartridge 43 is rotatably driven by a cartridge drive motor 44 provided below the cartridge 43. 45 is cartridge 4
The machine reel 45 is a machine reel for winding the magnetic tape 42 in the machine reel 45, and as shown in FIG.
6 to rotate. A plate 47 is rotatably disposed near the machine reel 45 and has teeth 47a carved on its side surface. 48 is a plate driving motor provided on the side of the machine reel 45. 49 is a small gear meshing with the ta 47a of the plate 47, 50 is a large gear coaxially arranged with the small gear 49,
51 is an idle gear meshing with the large gear 50, and 52 is a pinion gear attached to the output shaft of the plate drive motor 48. So, these gears 49. '50.5
1.52 constitutes a gear train, and plate drive motor 4
The rotational output of 8 is transmitted to the plate 47, and the plate 47
is designed to be rotationally driven.

The following guide is arranged on the outside of the plate 47. First, the leader block 41 of the car and torridge 43
A first guide 53 having an inclined guide portion 53a and a stopper portion 53b is disposed in the vicinity, and a second guide 54 having a linear guide portion 54a is disposed on the side of the first guide 53. There is. Further, a third guide 55 having an arcuate guide portion 55a is arranged near the machine reel 44. Note that 56 and 57 are cooling fans.

Below the plate 47 are tape guides 58 and 59 that abut against the magnetic tape 42 and guide the magnetic tape 42 between the two tape guides 58.
．． 59 is in contact with the magnetic tape 42, and the magnetic tape 4
2 is provided with a head 60 for reading and writing data. Further, in front of the tape guide 58, a guide [1-
A tension roller 62 is provided behind the tape guide 59.

A substantially fan-shaped rotating arm 63 is rotatably provided on the plate 47 . An engagement groove 418 provided in the leader block 41 is provided at one rotating end of the rotating arm 63.
a pin 64 engageable with the 1.2.3 guide 53.
A roller 65 as a guide that can come into contact with 54 and 55 is provided.

Further, a pin 66 is provided at the other rotating end portion to protrude in the direction of the plate 47. This pin 66 is connected to the plate 47
The guide groove 47b is engaged with an arc-shaped guide groove 47b formed in the guide groove 47b.

The rotating arm 63 is rotatable within the range where the pin 66 contacts the starting and ending ends of the guide groove 47 . 6
7 is a protrusion 47c protruding from the center of rotation of the plate 47;
One end is locked to the plate 47, the other end is loosely fitted into a hole drilled in a protrusion 63a on a rotating arm 63, and a guide 54.5 is attached to the rotating arm 63 and a roller 65.
5.56 is a spring that applies a biasing force in the direction of contact.

Next, the operation of the above configuration will be explained. First, the cartridge 43 is set in the magnetic tape device. At this time, the plate 47 is rotated so that the roller 63 is connected to the stopper portion 5 of the first guide 53.
3b.

Therefore, when the cartridge 43 is set, the pin 62 of the rotating arm 63 engages with the engagement groove 41a of the leader block 41 attached to the tip of the magnetic tape 42.

Next, when the plate drive motor 48 is driven, the plate 47 rotates counterclockwise in FIG. 2. At this time, the leader block 41 with which the pin 64 is engaged is pulled out from the cartridge 43 and moves together with the plate 47. This axis of movement of the pin 64 is moved by the roller 65 that comes into contact with the guide 54, 55, 56 of No. 1.2.3.
A trajectory T that draws a substantially arc shape between the curve and the curve I is formed. The leader block 41 then engages with the machine reel engagement groove 44a of the machine reel 44.

Next, when the machine reel 44 is rotated by a predetermined amount clockwise in FIG. 2 by the machine reel drive motor 46, the magnetic arm 742 becomes as shown in FIG. 4, and a predetermined tension is applied to the magnetic tape. 42 is a guide roller 61. Tape guide 58, head 60. tape guide 5
9. The magnetic tape 42 comes into contact with the tension roller 62, and loading of the magnetic tape 42 is completed.

When loading is completed, the machine reel 44 is rotated clockwise in FIG. 2 by the machine reel drive motor 46 while a constant tension is applied to the magnetic tape 42 by the tension roller 62, and the magnetic tape 42 is rotated clockwise in FIG. 44, and data is read and written by a head 60.

According to such a configuration, the pin 64 that engages with the leader block 41 moves while drawing a substantially arcuate trajectory T between the cartridge 43 and the machine reel 44 in FIG. It is smaller than the mechanism.

Note that the present invention is not limited to the above embodiments.

For example, in the above embodiment, the plate 47 is rotationally driven by the plate drive motor 48 via a gear, but it may also be driven via a timing belt. Further, although the roller 65 is provided as a guide, a slider may be used instead.

[Effect of Gyomei] As explained above, according to the present invention, the shape of the guide is
The pin is selected so that it moves in an approximately arc shape between the cartridge and the machine reel as the plate rotates, thereby realizing a magnetic tape drive mechanism that allows the device to be made more compact. be able to.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle configuration of the present invention, Fig. 2 is a plan configuration diagram showing an embodiment of the invention, Fig. 3 is a side configuration diagram similar to Fig. 2, and Fig. 4 is a diagram similar to Fig. 2. 5 is a configuration diagram showing a conventional magnetic tape loading mechanism, and FIG. 6 is a perspective view of the cartridge in FIG. 5. In Figures i1 to 4, 21.41 is the leader block, 22.42 is the magnetic tape, 23.43 is the cartridge 24.44 is the machine reel, 25.48 is the motor, 26.47 is the plate, 27.53.54 .55 is a guide, 28.65 is a guide, 29.64 is a pin, and 30.47 is a rotating arm.

Claims (1)

[Claims] A cartridge (23) containing a magnetic tape (22) with a leader block (21) attached to the tip thereof, and a machine reel (24) for winding the magnetic tape (22) inside the cartridge (23). a plate (26) rotatably disposed near the plate (26) and rotationally driven by a motor (25); and a guide (27) disposed outside the plate (26).
and a guide (28) which is rotatably mounted on the plate (26) and moves while abutting the guide (27).
and a pin (2) that can be engaged with the leader block (21).
and a rotary arm (30) provided with a rotating arm (30), and the guide (27) has a shape such that when the plate (26) rotates, the pin (29) rotates in the cartridge (2).
3) and the machine reel (24), the loading mechanism of the magnetic tape device is selected to move in a substantially circular arc shape.