JPS6367280B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention provides a magnetic bubble device that stores and transfers information by controlling magnetic bubbles in a removable cassette configuration, and also provides a magnetic bubble cassette (hereinafter referred to as a cassette). This invention relates to a cassette-type magnetic bubble memory device in which a cassette holder (hereinafter abbreviated as holder) is attached to a cassette holder (hereinafter abbreviated as holder) via a connector.

(b) Background of the Technology Recently, magnetic bubble devices have been configured as cassettes, and in such cassette-type magnetic bubble memory devices, it is difficult to ensure that, for example, a signal indicating that preparation for cassette removal is complete or a signal indicating that cassette insertion is complete is received. If the cassette is not released in a timely manner, the information stored in the cassette may be destroyed if the cassette is removed while it is in operation or if electricity is applied with insufficient connection.

To this end, countermeasures have been taken, such as providing a lid large enough to close the cassette insertion opening of the cassette storage chamber and generating an electrical signal by detecting the open/closed state of the lid, but this is not always sufficient.

(c) Prior Art and Problems First, a conventional cassette-type magnetic bubble memory device will be explained. 1 and 2 are perspective views of the cassette, with FIG. 1 showing the lid closed and FIG. 2 showing the lid open. The magnetic bubble device is housed inside an upper cover 1a and a lower cover 1b, and is provided with a rotatable lid 2 on the front, and when the lid 2 is opened, a connector 3 is exposed as shown in FIG. Two relief grooves 8 are formed in parallel on the upper wall of the cassette.
Two claws 9 of the lid 2 are rotatably inserted and supported at the tip thereof, and the lid 2 is normally closed by a torsion spring (not shown).

Figure 3 and the following are examples of the holder, with Figure 3 being a parallel view, Figure 4 being a left side view, Figure 5 being a right side view, and Figure 6 being a right side view.
The figure is a front view of the holder with the lid open, Figure 7.
FIG. 8 is a partially cutaway right side view, and FIG. 9 is a bottom view.

The holder is provided with a lid 10 on the front, and its support shaft 11 is attached to the upper end of the holder as shown in FIGS. 4, 5, and 8. A toggle spring 12 for the lid is attached between the lid 10 and the holder as shown in FIG. 7, and when the lid 10 is closed, the toggle spring 12
is biased in the direction of closing. This toggle spring 1
When the lid 10 is opened by hooking a finger on the handle 13, the numeral 2 moves rearward through the support shaft 11 and biases the lid 10 in the opening direction.

When the lid 10 is opened as shown in FIG. 6, a cassette storage chamber 14 is exposed. This storage chamber 14 has a configuration as shown in FIG. 7 when viewed from the side, and a connector 16 is fixed to the holder main body 15 at the innermost part.
The cassette C is placed in this storage chamber 1 with the lid 10 open.
4, and the internal connector 16 and cassette C
Connector 3 is coupled. The lid 2 of the cassette is normally closed, but two protrusions 18 are provided on the inner surface of the ceiling plate 17 of the storage chamber 14 in the direction in which the cassette is inserted. The claw 9 of the cassette C abuts against the protrusion 18 and is pushed down, opening the cassette C just before the connectors 16 and 3 are connected.

Insertion of the cassette is performed by manually pushing the cassette into the storage chamber 14, and ejection is performed by pressing the eject button 20. A slider 22 is stacked on the inner surface of the bottom plate 21 of the storage chamber 14, and an abutment plate 23 that stands up vertically is integrally provided at the end of the slider 22 on the connector side. When the cassette is inserted, the cassette C is placed on this slider 22. As shown in FIGS. 7 and 9, a slit 24 is formed in the bottom plate 21 in the direction in which the cassette is inserted, into which two rollers 25 and 26 attached to the slider 22 are inserted at intervals. ing.

On the other hand, as shown in FIGS. 8 and 9, the bottom plate 21
is provided with a slit 27 parallel to the slit 24 in the forward and backward movement direction of the eject button 20, and a slit 27 attached to the eject button shaft 28 is provided in the slit 27.
rollers 29 and 30 are inserted. Further, a lever 32 is rotatably attached to the bottom plate 21 with a support shaft 31, one end 32a of the lever is sandwiched between rollers 29 and 30 of the eject button shaft, and the other end 32a is held between rollers 29 and 30 of the eject button shaft.
b is located between the slider side rollers 25 and 26. The lever 32 is biased toward the return side of the rollers 29, 30 and the eject button 20 by a return spring 33. A discharge spring 35 made of a torsion spring is attached between a pin 34 implanted in a portion of the slider 22 exposed in the slit 24 and a pin 36 implanted in the bottom plate 21.
2 in the cassette ejection direction.
That is, the illustrated state is a state in which the slider 22 has moved to the end of the stroke on the inner deep side, and when the eject button 20 is operated, the slider 22 moves toward the ejection spring 3.
Due to the spring force 5, the discharge spring 35 is moved back by the stroke St to the position shown by the chain line, and the discharge spring 35 is also in the state shown by the chain line.

When the cassette is inserted into the storage chamber 14, the front end of the cassette comes into contact with the abutment plate 23 of the slider 22.
The spring force of the ejection spring 35 acts on the slider 22, and when pushed against this spring force, the slider 22 moves forward together with the cassette from the position shown in chain lines in FIG. state. At this time, the pin 34 of the ejection spring 35
When the slider 22 passes through the fixing pin 36 to the bottom 21 of the
A force is generated to urge the cassette to the side, making it easier to insert the cassette. Since the lever 32 is biased by the return spring 33, it is positioned in the direction in which the eject button 20 is returned unless the eject button 20 is pushed in.

In order to take out the cassette mounted in the storage chamber 14 in this way, it is sufficient to push the eject button 20 against the return spring 33. Then, the right end 32a of the lever moves downward from the state shown in FIG. 9, pushes up the roller 26, pushes the slider 22 back toward the cassette insertion opening 14i, and the connector 3 separates from the connector 16. At this time, the discharge spring 35
When the pin 34 moves from the position indicated by the solid line in FIG. 9 and passes the ejection spring attachment pin 36, the slider 22 and the cassette thereon are ejected into the cassette insertion port 14i by the snap action of the ejection spring.

An eject button 20 is provided at a position adjacent to the cassette insertion slot 14i, and
A lid 10 large enough to hide both the cassette C and the eject button 20 is provided in the cassette insertion slot 14i, so that the lid 10 must be opened when inserting or removing the cassette C or when operating the eject button 20. As shown in FIG. 5, an operating pin 37 is provided on the opposite side of the lid 10 by sandwiching the support shaft 11, and the holder body 15 includes a lever 38 having a light shielding plate at one end, a light emitting diode, and a phototransistor. A signal generating means such as a photo sensor 39 is installed, and when the lid 10 is opened, the operation pin 37 pushes the lever 38 and lifts the light shielding plate interposed between the light emitting diode of the photo sensor 39 and the photo transistor, and the lid 10 is opened. A signal indicating this is generated and notified to the control unit.

Figure 10 is a schematic left side view showing the state in which cassette C is inserted into the cassette storage chamber.
Figure a shows a state in which the cassette is not fully inserted, Figure 10b
indicates that the cassette is securely inserted. 1st
When the cassette C is inserted securely as shown in Figure 0b, the connector 3 inside the cassette is securely connected to the connector 16 on the holder side, and the roller 41 of the lever 40 is inserted into the recess 7 provided at the bottom of the cassette. insert. However, if the cassette is not inserted securely and a gap G is created between the cassette C and the connector 16 as shown in FIG.
The roller 41 cannot fit into the recess 7 because it is deviated from the position shown in FIG. The lever 40 is attached to the holder body with a support shaft 42, and the roller 41 is attached to one end of the lever 40.
is attached, and the other end extends near the lower end of the lid 10. Then, the roller 41 is moved into the recess 7 by the torsion spring 44.
It is biased in the direction of insertion. On the other hand, the lid 10 is provided with a protrusion 10a which comes into contact with the other end 43 of the lever when the cassette is not inserted securely and the roller 41 cannot fit into the recess 7, as shown in FIG. 10a. When the cassette is securely inserted and the roller 41 fits into the recess 7 as shown in FIG. can be closed to However, if the roller 41 cannot fit into the recess 7 due to incomplete insertion of the cassette, the other end 43 of the lever rises and the protrusion 10 of the lid 10
a, the lid 10 cannot be closed reliably. However, even if the lid 10 is not closed securely, if the lever 38 pressed by the operating pin 37 is restored and the signal indicating that the lid 10 has been opened stops, the control section will misinterpret this as the completion of the cassette device. and write the information,
There is a risk that reading will start.

(d) Object of the Invention An object of the present invention is to make it possible to prevent the occurrence of erroneous operations due to a cassette-type magnetic bubble memory device with a simple structure.

(e) Structure of the Invention The object is to hold a magnetic bubble cassette in which a magnetic bubble device consisting of a magnetic bubble chip, a drive coil, a bias magnet, etc. is assembled into a case together with a connector, and the magnetic bubble cassette is connected to the connector. It consists of a cassette storage chamber, an eject mechanism for ejecting a magnetic bubble cassette from the cassette storage chamber, and a cassette holder equipped with an eject button to operate the eject mechanism, and a lid that can close the cassette insertion slot on the front of the cassette storage chamber. In a cassette-type magnetic bubble memory device that detects the open/closed state of a lid and generates an electric signal, there is a slider that is held on the side of the holder body and slides back and forth in contact with a projection on the lid, and a slider that slides back and forth from the slider to the top of the holder body. a lever that is rotatably fixed to the upper surface of the holder body and has a light-shielding plate at one end and engages with the pin at the other end; Between the pressing torsion spring and the facing light emitting diode and phototransistor,
This is achieved by the cassette-type magnetic bubble memory device of the present invention, which comprises an electric signal generating means with a photo sensor whose light-shielding plate is inserted and removed by the rotation of a lever.

(f) Embodiment of the Invention If the cassette C is inadvertently ejected while it is in operation, the information in the magnetic bubble memory may be destroyed, so before ejecting the cassette, the information in the magnetic bubble memory is If you do not start reading or writing information from the magnetic bubble memory after cassette C has been inserted to the specified position and the cassette and holder are securely connected via the connector, the magnetic bubble memory The information inside may be destroyed. The present invention provides a malfunction prevention mechanism in the mechanism for detecting the opening/closing state of the lid to prevent information in the magnetic bubble memory from being destroyed due to such malfunction.Embodiments of the present invention will be described below with reference to the accompanying drawings.

11 and 12 show an embodiment of the erroneous operation prevention mechanism according to the present invention. FIG. 11 shows a state in which the lid 10 is closed, and FIG. 12 shows a state in which the lid 10 is open. Left side view, b shows a plan view.

In the figure, a slider 45 is provided with a protrusion 10b on the lid 10 and is slidably held by a holder body 15 at a position opposite to the protrusion 10b;
A lever 48 having a light shielding plate 47 at one end is provided which engages with a pin 46 formed at one end of the slider 45 and rotates about a shaft 50 as a fulcrum. The slider 45 is always connected to the holder body 1 by a torsion spring 49.
The first
As shown in FIG. 1, when the lid 10 is closed, it is pushed by the protrusion 10b and moves backward, and the light shielding plate 47 provided at one end of the lever 48 is inserted between the light emitting diode of the photo sensor 39 and the photo transistor. However, as shown in FIG. 12, when the lid 10 is opened, the slider 45 moves toward the front of the holder body 15, and the pin 46 operates the lever 48, causing the light shielding plate 47 at one end of the lever 48 to become a light emitting diode. Pull it out from between the phototransistors and remove the lid 10.
The control unit is configured to generate a signal indicating that the opening has occurred and notify the control unit.

This erroneous operation prevention mechanism generates a signal indicating that the lid 10 is opened when the lid 10 is opened even slightly, and the first
As shown in Fig. 0b, the cassette is inserted securely and maintained in that state until the roller 41 is fitted into the recess 7, so there is no chance that the cassette C will be accidentally ejected while it is in operation, or that the cassette C It is possible to prevent erroneous operations such as starting read/write operations of information on the magnetic bubble memory before it is inserted to a predetermined position.

(g) Effects of the Invention As described above, the present invention is equipped with a means for detecting the open/closed state of the lid and generating an electric signal, so that when ejecting a cassette, the lid is opened in advance and the detection signal is notified to the control unit, and the operation of the magnetic bubble device is stopped. Furthermore, since the operation of the magnetic bubble device does not start unless the cassette is installed in a predetermined position, it is possible to prevent the contents of the magnetic bubble memory from being destroyed due to an accident when the cassette is installed or removed.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of the cassette;
The following figures are examples of the holder. Figure 3 is a plan view, and Figure 4 is a plan view.
The figure is a left side view, Figure 5 is a right side view, Figure 6 is a front view with the holder lid open, Figures 7 and 8 are a partially cutaway right side view, Figure 9 is a bottom view, Fig. 10 is a schematic diagram showing the state in which cassette C is inserted into the cassette storage chamber, and Fig. 10a shows the state in which the cassette C is not fully inserted.
FIG. 10b shows a state in which the lid is firmly inserted, FIGS. 11 and 12 show an embodiment of the present invention, and FIG. 11 shows a state in which the lid is closed, and FIG. 12 shows a state in which the lid is opened. In the figure, C is a cassette, 7 is a recess in the cassette, 10 is a lid, 10a and 10b are projections provided on the lid, 15 is a holder body, 39 is a photo sensor,
45 is a slider, 46 is a pin formed at one end of the slider, 47 is a light shielding plate, 48 is a lever, 49
indicates a torsion spring, and 50 indicates a shaft.

Claims (1)

[Claims] 1. A magnetic bubble cassette in which a magnetic bubble device consisting of a magnetic bubble chip, a drive coil, a bias magnet, etc. is assembled into a case together with a connector, a cassette storage chamber for holding the magnetic bubble cassette with the connector connected, and the magnetic bubble cassette. The cassette holder includes an eject mechanism for ejecting the cassette from the cassette storage chamber, and an eject button for operating the eject mechanism, and a lid that can close the cassette insertion port is provided on the front surface of the cassette storage chamber, and the lid In a cassette-type magnetic bubble memory device that generates an electric signal by detecting the open/closed state of A protruding pin, a lever rotatably fixed to the upper surface of the holder body, having a light shielding plate at one end and engaging the pin at the other end, and the slider suspended between the holder body and the lever. An electric signal generating means is constituted by a torsion spring that presses the light-shielding plate toward the front side, and a photo sensor in which the light-shielding plate is inserted and removed by rotating the lever between the light-emitting diode and the phototransistor that are opposed to each other. Characteristic cassette type magnetic bubble memory device.