JPS6123599B2 - - 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 a magnetic bubble cassette (hereinafter referred to as This invention relates to a cassette-type magnetic bubble memory device in which a cassette (abbreviated as "cassette") is attached to a cassette holder (hereinafter abbreviated as "holder") via a connector.

(b) Prior art and its problems Recently, it has been proposed to use a cassette configuration for magnetic bubble memory devices, but the cassette cannot be installed and removed smoothly, lacks operability, and the characteristics of the cassette type cannot be fully realized. I was unable to demonstrate my abilities. If attachment and detachment cannot be carried out smoothly, there is a risk that the cassette and the holder may be damaged, and the connector connection between the cassette and the holder cannot be ensured, which has the disadvantage of impairing the reliability of the electrical connection.

(c) Object of the Invention It is an object of the present invention to make it possible to realize the above-mentioned demands by using a cassette-type magnetic bubble memory device with a simple configuration.

(d) Structure of the Invention In order to achieve this object, the present invention provides a magnetic bubble cassette in which a magnetic bubble device consisting of a magnetic bubble chip, a drive coil, a bias magnet, etc. is built into an insulating case, and is equipped with a connector; In a magnetic bubble memory device having a cassette holder that holds the magnetic bubble cassette in a state in which the magnetic bubble cassette is connected to a connector, an eject mechanism using a lever action for ejecting the magnetic bubble cassette from a cassette storage chamber of the cassette holder and the eject mechanism are operated. In addition, a slider is provided in the cassette storage chamber with a stopper member that can place the cassette and slide it back and forth as well as drive the cassette in the ejection direction.
A lever for levering the eject mechanism is interposed between the eject button shaft and the slider, so that the operating force of the eject button is transmitted to the cassette via the slider. It is being harvested.

(e) Embodiments of the Invention Next, examples will explain how the cassette type magnetic bubble memory device according to the present invention is actually implemented. 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 built inside the upper cover 1a and the lower cover 1b, and is equipped with a rotatable cassette lid 2 on the front. When the cassette lid 2 is opened, a connector 3 is opened as shown in FIG. appears. The height _h2 of the lower cover 1b is smaller than the height _h1 of the upper cover 1a, making it vertically asymmetrical. A groove 4 for preventing reverse insertion is formed at the boundary between the upper and lower covers 1a and 1b. A grounding metal piece 5 is embedded in the bottom of this groove 4, and an earthing spring 6 that presses against this metal piece 5 is fixed to the holder. The groove 4 and the grounding metal piece 5 are provided on both side walls of the cassette. A recess 7 for position detection or locking is formed at the corner between the bottom of the cassette and the left and right side walls. Two escape grooves 8 are formed in parallel on the upper wall of the cassette, and two claws 9 of the cassette lid 2 are rotatably inserted and supported at the tips of the grooves, and a torsion spring (not normally shown) is inserted and supported at the tip of the groove. It is closed by the spring force of.

Figure 3 and the following are examples of the holder into which this cassette C is inserted and supported. Figure 3 is a plan view, Figure 4 is a partially cutaway front view, Figure 5 is a left side view, and Figure 6 is a right side view. , Fig. 7 is a front view of the holder with the lid open, Figs. 8 and 9 are partially cutaway right side views, and Fig. 10 is a partially cutaway right side view.
The figure is a bottom view.

The holder is equipped with a holder lid 10 on the front as shown in FIG. 4, and its supporting shaft 11 is as shown in FIG.
It is attached to the upper end as shown in FIGS. 6, 8, and 9. As shown in FIG. 10, a toggle spring 12 for the lid is attached between the lid 10 and the holder.
When the lid 10 is closed, the toggle spring 12 is located closer to the lid than the support shaft 11 and biases the lid 10 in the closing direction. When opening the lid 10 in the direction of arrow _a by hooking your finger on the handle 13, the toggle spring 12
When the cover passes through the support shaft 11 and moves backward, the lid 10
The lid 10 is biased in the opening direction, and the lid 10 can be opened and closed easily and reliably.

When the lid 10 is opened as shown in FIG. 7, a cassette storage chamber 14 is exposed. This storage chamber 14 has a shape as shown in FIG. 8 when viewed from the side, and a connector 16 is fixed to the holder main body 15 at the innermost part. With the lid 10 open, the cassette C is
The cassette is inserted into the storage chamber 14 from the cassette insertion opening 14i in the direction of arrow _a1 , and the internal connector 16 and the cassette side connector 3 are connected. Nano PC is a printed circuit board fixed to the connector 16 and electrically connected to it, on which peripheral circuits such as a control section for the magnetic bubble device inside the cassette are mounted. Storage room 14
Two protrusions 18 are provided on the inner surface of the ceiling plate 17 in the direction of insertion of the cassette, and when the cassette is inserted into the storage chamber 14, the claw 9 of the cassette C is attached to the front end of the protrusion. Claw 9 hits arrow 18a
a It is pushed down by forces in _two directions, and the protruding strip 18 is then pushed down to the lid 10.
The cassette is inserted into the claw 9 and the relief groove 8. Therefore, the lid of the cassette 2
is normally closed, but is opened just before the connectors 16, 3 are mated.

As shown in FIG. 7, horizontal protrusions 19 are formed on the left and right inner walls of the cassette storage chamber 14.
When the cassette is inserted, the protrusions 19 fit into the left and right grooves 4 of the cassette, thereby guiding the cassette and preventing reverse insertion.

Insertion of the cassette is performed by manually pushing the cassette into the storage chamber 14 through the cassette insertion opening 14i, and ejection of the cassette is performed by pushing the eject button 20 in the direction of arrow _a1 . Next, this ejection mechanism will be explained. A slider 22 is stacked on the inner surface of the bottom plate 21 of the storage chamber 14, and a vertically rising upright plate 23 is integrally provided at the end of the slider 22 on the connector side. When the cassette is inserted, it is placed on this slider 22. FIG. 8 is a cross-sectional view taken from FIG. 10, and FIG. 9 is a cross-sectional view taken from FIG. 10. As shown in FIGS. 8 and 10, a slit 24 is formed in the bottom plate 21 in the insertion direction of the cassette, and a slit 24 is formed in the bottom plate 21 in the direction in which the cassette is inserted.
rollers 25, 26 are inserted at intervals.

On the other hand, as shown in FIGS. 9 and 10, a slit 27 parallel to the slit 24 is formed in the bottom plate 21 in the forward and backward movement direction of the eject button 20, and an eject button shaft 28 is inserted into the slit 27. Two rollers 29 and 30 attached to the rollers are inserted. In addition, a lever 32 is attached to the bottom plate 21 with a support shaft 31.
is rotatably attached, and one end 32a of the lever
is sandwiched between rollers 29 and 30 of the eject button shaft, and the other end 32b is located between rollers 25 and 26 on the slider side. The lever 32 has a return spring 33 that urges the rollers 29, 30 and the eject button 20 toward the return side (in the direction opposite to the arrow _a1 ).

A discharge spring 35 made of a torsion spring is attached between a pin 34 implanted in the portion of the slider 22 exposed in the slit 24 and a pin 36 implanted in the bottom plate 21, and the discharge spring 35 is installed to move the slider 22 in the cassette discharge direction. (Arrow A, ₃ directions) can be biased.
That is, in the illustrated state, 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 as follows.
The spring force of the discharge spring 35 causes the discharge spring 35 to retreat by a stroke St to the position indicated by the chain line, and the discharge spring 35 also enters the state indicated 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 backing plate 23 of the slider 22. Since the spring force of the ejection spring 35 acts on the slider 22 in the direction of arrow _a3 , if the cassette is continued to be pushed in against this spring force, the slider 22 will move forward together with the cassette from the position indicated by the chain line in FIG. This results in the state shown by the solid line in FIGS. 8 and 10. At this time, when the pin 34 of the ejection spring 35 passes through the fixing pin 36 of the ejection spring 35 to the bottom plate 21, a snap action is activated and a force (arrow a ₃
This generates a force in the opposite direction to the cassette, making it easy to mount the cassette and connect the connectors 16 and 3. 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.

To take out the cassette mounted in the storage chamber 14 in this way, it is sufficient to push the eject button 20 in the direction of arrow _a1 against the return spring 33. Then, from the state shown in FIG. 10, the right end 32a of the lever moves in the direction of arrow _a , causing the roller 26 to
a Press in _three directions to push the slider 22 back toward the cassette insertion slot 14i. Then slider 22
The cassette is pushed in the direction opposite to the arrow _a1 by the backing plate 23, and the connector 3 is separated from the connector 16 and is ejected into the cassette insertion port 14i. At this time, when the pin 34 of the discharge spring 35 moves in the direction of arrow _a3 from the position indicated by the solid line in FIG. 10 and passes the discharge spring mounting pin 36, the spring force acts in the direction of arrow _a3 , and the Slider 22 with snap action
and the cassette above it is inserted into the cassette insertion slot 14.
ejected to i.

The lever has a smaller dimension from the support shaft 31 to the left end 32b than from the right end 32a, and utilizes the lever principle to easily drive the slider 22 and disconnect the connector with a small force. In order to reduce the operating force of the slider 22 in this way, by shortening the dimension between the support shaft 31 and the left end, the stroke of the left end of the lever 32 becomes smaller, but within the range of the stroke of the left end 32b of the lever, If the direction of action of the spring force of the spring 35 is reversed to generate a toggle force, the slider 22 and the cassette above it will be ejected by the spring force, so the stroke of the slider can be expanded, and the stroke of the left end of the lever can be expanded. can easily compensate for the decrease in

A coil spring is used as the ejection spring, and as shown in FIG.
A similar effect can be obtained by attaching the coil spring 35a between the free end 46 attached to the bottom plate 21 and the bottom plate 21. That is, when the coil spring 35a is located closer to the lever 32 than the fulcrum 47 as shown in A, the slider 22 is biased toward the connector 16. Eject button 20 from this state
When the slider 22 is moved in the direction of arrow _a3 via the lever 32 and the free end 46 passes the fulcrum 47, the spring force acts in the direction of arrow _a3 to move the slider 22 and the cassette in the ejection direction (arrow a (in the opposite direction to ₁ ), and becomes the state shown in (b). Next, when the cassette is inserted and the slider 22 is pushed from the position B to the position A, the spring force of the coil spring 35a is reversed from the direction of arrow _A3 to the opposite direction, and the toggle action at that time causes the connector of the cassette to close. Easy to combine.

Alternatively, the slider 22 may be formed into a box shape, into which the cassette is inserted and moved back and forth within the storage chamber 14.

If cassette C is built into the holder and is inadvertently ejected while it is operating, the information in the magnetic bubble memory may be destroyed, so be sure to remove the magnetic bubble memory before ejecting the cassette. It is necessary to stop reading and writing information. To this end, the present invention takes the following measures. That is, an eject button 20 is disposed adjacent to the cassette insertion opening 14i, a lid 10 of a size that can hide both the cassette insertion opening 14i and the eject button 20 is disposed on the cassette insertion opening 14i, Attaching and detaching cassette C,
When operating the eject button 20, the lid 10 must be opened. This prevents the user from accidentally operating the eject button 20 to eject the cassette or forcibly pulling out the cassette C. Furthermore, when the lid 10 is opened, a signal indicating that the lid 10 has been opened is generated and notified to the control section on the printed circuit board Pc.

For this purpose, as shown in FIG. 6, an operating pin 37 is provided near the support shaft 11 of the lid 10, and a signal generating means such as a micro switch 38 is attached to the holder body 15, and the lever 39 is operated as described above. It is extended to the vicinity of pin 37. When the lid 10 is closed as shown in the figure, the lever 39 is not operated by the operating pin 37, but when the lid 10 is opened in the direction of arrow _a4 to the state shown by the chain line, the lever 39 is pushed down by the operating pin 37. Then, the microswitch 38 is activated to generate a signal indicating that the lid 10 has been opened, and the control circuit on the printed circuit board Pc is notified of this signal.

FIG. 11 is a schematic left side view showing the state in which the cassette C is inserted into the cassette storage chamber, where (a) shows the cassette not fully inserted, and (b) shows the cassette fully inserted. Cassette C like B
When the connector 3 inside the cassette is inserted securely,
is securely connected to the connector 16 on the holder side, and the lever 40 is inserted into the recess 7 provided at the bottom of the cassette.
The roller 41 is inserted. However, if the cassette is not inserted reliably and a gap G is created between the cassette C and the connector 16 as shown in FIG. The lever 40 is attached to the holder main body by a support shaft 42, the roller 41 is attached to one end thereof, and the other end 43 extends near the lower end of the lid 10. and spring 4
4, the roller 41 is biased in the direction of intervening in the recess 7. On the other hand, since the cassette C is not inserted securely into the lid 10 as shown in A, the roller 41
If the lever cannot be inserted into the recess 7, the other end of the lever 43
It is provided with a protrusion 10a that comes into contact with.

Therefore, if the roller 41 cannot fit into the recess 7 due to incomplete insertion of the cassette, the other end 43 of the lever will rise and hit the protrusion 10a of the lid 10, making it impossible to close the lid 10 reliably. However, when the cassette is inserted securely and the roller 41 fits into the recess 7 as shown in FIG. can. If the lid 10 is not reliably closed, the microswitch 38 is operated as described above to output a detection signal to the control section. As a result, the control section can detect that the cassette is not inserted securely and control the magnetic bubble device inside the cassette so as not to drive it, and only when the cassette is securely inserted as shown in (b). A magnetic bubble device is activated. In the illustrated example, the microswitch 38 for generating the signal for opening the lid 10 described in FIG. 6 is also used for generating the signal for incomplete insertion of the cassette, but a separate detection means may be used. The detection means may be an optical means consisting of a light emitting element and a light receiving element instead of the mechanical microswitch.

(f) Effects of the Invention As described above, according to the present invention, in order to eject the magnetic bubble cassette from the cassette storage chamber of the cassette holder, an eject mechanism that exerts a lever action and an eject button that operates the eject mechanism are provided. With this feature, the cassette can be easily ejected by simply pressing the eject button with a small amount of force. A slider is disposed within the cassette storage chamber so that the ejecting force from the ejecting mechanism is transmitted to the cassette via the slider. As a result, the ejecting force is uniformly transmitted to the cassette, and the cassette moves in the attachment/detachment direction while being placed on a slider that can easily move back and forth, so that the cassette can be inserted reliably with little force. Furthermore, since the cassette can be operated independently of the slider in the cassette ejection direction, it is also possible to take out only the cassette by hand, regardless of the slider or eject mechanism. By interposing an ejection spring acting as a toggle spring between the slider and the bottom plate, mounting and ejecting the cassette can be performed more easily and reliably.

[Brief explanation of the drawing]

The drawings show an embodiment of a cassette-type magnetic bubble memory device according to the present invention, and FIGS. 1 and 2 are perspective views of the magnetic bubble cassette. Figure 3 and subsequent figures show the cassette holder. Figure 3 is a plan view, Figure 4 is a partially cutaway front view, Figure 5 is a left side view, Figure 6 is a right side view, and Figure 7 is a view of the holder. A front view with the lid open, Figures 8 and 9 are a partially broken right side view, Figure 10 is a bottom view, Figure 11 is a left side view schematically showing the holder, and Figure 12 is a slider. It is a figure which shows another Example of the ejection spring of. In the figure, C is a cassette, 14 is a cassette storage chamber, 14i is a cassette insertion slot, 20 is an eject button, 22 is a slider, 28 is an eject button shaft, 32 is a lever, and 35 and 35a are ejection springs.

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 built into an insulating case and is equipped with a connector, and the magnetic bubble cassette is connected to the connector. A magnetic bubble memory device having a cassette holder for holding a magnetic bubble cassette, comprising an eject mechanism using a lever action for ejecting a magnetic bubble cassette from a cassette storage chamber of the cassette holder, and an eject button for operating the eject mechanism. A slider equipped with a support member capable of placing a cassette and sliding it back and forth and driving the cassette in the ejection direction is provided in the chamber, and between the eject button shaft and the slider,
A cassette-type magnetic bubble memory device characterized in that a lever acting as a lever of the eject mechanism is interposed so that the operating force of the eject button is transmitted to the cassette via the slider.