JPH0373463A - Disk device - Google Patents

Abstract

PURPOSE:To prevent a misoperation at the time of inserting a disk cassette by protruding an operation member provided close to an opening part for inserting/ejecting the disk cassette on a front panel from the front panel only at the time of inserting the disk cassette. CONSTITUTION:An ejecting operation member B for ejecting a magnetic disk cassette is disposed close to an opening part 18a for inserting the cassette on the front panel 18. Then, only at the time of inserting the disk, an ejection lever 34 is moved by an elastic means 38 in releasing a locking means 33a from its locking state so that the operation member B coupled with the ejection lever 34 is protruded from the front panel 18. By this method, the operation member B is kept out of the way, and misoperation at the time of inserting the disk can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a disk device, and more specifically to a disk device in which a disk cassette containing a disk as a recording medium is removably inserted to record and reproduce information. The present invention relates to a disk device equipped with a cassette ejection mechanism for ejecting a disk cassette tJF.

[Prior Art 1] As this divine device, there is a magnetic disk device in which a magnetic disk cassette containing a magnetic disk of a magnetic recording medium is removably inserted to record and reproduce information.

In some conventional magnetic disk drives, an eject button for inserting the magnetic disk drive and ejecting the inserted magnetic disk cassette by υ1 is provided on the front panel.

However, such devices have the problem of magnetic disk force.

[Objective] It is an object of the present invention to provide a disk device that can eliminate the above-mentioned conventional drawbacks.

In order to achieve the above object, the present invention provides a disk device that uses a disk cassette that has a shutter that opens and closes a head window that exposes a rotatably housed disk to the outside, in which the disk device can be inserted and removed. a front panel in which an opening for opening the disc and an operating member for ejecting the disc cassette are arranged in parallel; a cassette guide transported between a position and a second position at which recording or reproduction can be performed on a disc in the disc cassette; and a second position corresponding to the first position and second position of the cassette guide, respectively. 17 an eject lever which is movably arranged between the second positions and which regulates the position of the cassette guide and the position of the operating member with respect to the front panel when the moving position LL; an elastic means that constantly biases the eject lever in the direction of a first position close to the front panel; and a second elastic means that moves the eject lever away from the front panel when a disc is not inserted.
and a locking means that locks at the position and releases the locked state when the disk cassette is inserted,
When the locking means is released from the locked state upon insertion of the disk cassette, the ejector lever is moved by the elastic means, thereby causing the operating member connected to the ejector lever 7 to protrude from the front panel and locking the cassette. A configuration is adopted that allows the guide to be returned to the first position.

Embodiment] The present invention will be described in detail below based on the embodiment shown in the drawings.

FIG. 1 shows a magnetic disk cassette installed in the apparatus of the present invention, and a magnetic disk 12 is accommodated in the cassette l. A center hub 2 for clamping is protruded from the center of the magnetic disk 12, and a center hole 3 for removing dust is formed in the center of the center hub 2. A drive hole 4 is provided into which a bottle for rotating is fitted.

Further, a head window 5 is formed at a position closer to the cassette mounting direction shown by arrow B, and a dustproof shutter 6 is provided inside this head window 5.

Small holes 8.8 for positioning the cassette 1 are formed on the left and right sides of the head window 5, and furthermore, write protect holes 9, 9 and a notch 10 for detecting the front and back sides of the cassette are formed.

The reference numeral "it" indicates an index 4, and the reference numeral 7 indicates a slide lever for opening and closing the shutter 6. When the cassette is installed in the device, the slide lever 7 is caught by a claw provided inside the device and moves in the direction to open the shutter 6.

A magnetic disk cassette having such a structure has a second
It is installed in the magnetic disk device shown below.

The magnetic disk drive 15 according to the present invention has a pair of left and right side plates 16 and 17, and a front panel 18 is provided between the tips of both 0111 plates, and this panel 18 has an opening for inserting a cassette. A portion 18a (insertion port) is formed.

Inside the front panel 18, as shown in FIGS. 9 and 1O, a pair of upper and lower dustproof doors 19.20 are rotatably supported at their lower ends via shafts 21.22, respectively. A torsion coil spring 23 wound around the shafts 21 and 22 provides a constant turning force in the closing direction.

Here, in the single-opening method shown in 13th p(a), when the dustproof door 19 is rotated about the shaft 21a, a depth equal to the distance R is required. Therefore, if the double-opening method shown in FIG.
R/2), the depth can be shortened, and the device can be made smaller accordingly. However, if the distance He between the shafts 21.22 and the dimensions of the dustproof door 19.20 do not match, the tips of the door 19.20 may collide with each other, or there may be a gap between the tips of the door 19.20. This may cause the dustproof door to no longer function properly. Moreover, such dimensional mismatches are often caused by variations in component dimensions.

Therefore, the configuration shown in FIGS. 9 and 10 is adopted.

That is, in FIG. 9 and FIG. 1O, the upper dustproof door 19 is located in front of the lower dustproof door 20, and the first
As shown in figure O, at the upper end of the lower dustproof door 20 side,
A bent part 20a is formed which is bent at a constant angle of 0 degrees, and this folded part 20a and the second side dustproof door 1 are formed.
The lower edges of the cassettes 9 are in contact with each other to form a double-folding door, and when the cassette is not installed, the cassettes are closed without leaving any gaps.

In order to maintain such a positional relationship, the 101', A
The codes ff, , I2 . Each door 1 as shown in
It is necessary that the turning radius of 9.20 is approximately equal.

14 Inside the panel 18 and inside the device, as shown in Figure 4.
A flat U-shaped cassette guide 24 with an open bottom is arranged. When no cassette is installed, the cassette guide 24 faces a cassette insertion opening 18a formed in the front panel. Therefore, when the cassette l is installed, it is fitted to the tip of the cassette guide 24 and moves straight while being guided by the cassette guide 24. At this time, a protrusion (not shown) is attached to the slide lever provided on the surface of the cassette. 7, the shutter 6 gradually opens as the cassette moves deeper, and when the cassette reaches the innermost part, the shutter 6 is completely opened and the head and magnetic disk can come into contact.

Above the cassette guide 24 is a cassette ejection lever 25.
is provided. This ejection lever 25 has a long hole 25a,
25b, and guide bins 26 and 27 are slidably fitted into each elongated hole, and a protrusion 24a cut and raised from the cassette guide 24 and one end 2 of the cassette ejection lever 25 are provided.
A spring 28 is stretched between the RtiM panel 18 and the RtiM panel 18, and a spring 28 is stretched between the RtiM panel 18 and the RtiM panel 18 at all times.

At the tip of the cassette ejection lever 25, fold 11 toward the F direction.
The bent portion 25d is inserted downward from the opening 24b formed in the cassette guide 24, and comes into contact with the cassette inserted into the cassette guide.

A projecting piece 25e is provided on the side plate 16I11 at the end of the ejection lever 25, and two lock arms are provided rotatably about a shaft 30 at a position where the projecting piece 25e engages with the projecting piece 25e. The lock arm 29 is
A spring 31 stretched between the protrusion 16a at the end of the side plate 16 provides a constant rotational tendency in the counterclockwise direction in FIG. 5, and the two arms 32.
It has 33. The arm 32 is in a position where it can engage with the protrusion 25e of the ejection lever 25.

On the other hand, an eject lever 34 is arranged on the outside of the side plate 16. The eject lever 34 has elongated holes 34a and 34h in a horizontal state at separate positions in the longitudinal direction, and a bottle 35 protruding from the measuring plate 16 is slidably fitted into these elongated holes. ing.

Further, an elongated open R-1 portion 34c is formed approximately at the center of the eject lever 34 between the elongated holes 34a and 34b. A hole 36 is provided in the mouth/trick arm 29I11 near this opening 34c, and a spring 38 is stretched between this hole 36 and a hole 37 provided in the side plate located on the opposite side. , f-ject lever 34
, the habit of always moving toward the front panel 18 side is given.

Also, the lock arm 29 Il of the eject lever 34
A pin 39 is protruded from the outer surface of the + end, and the pin 39 is in a hanging position where it engages with a hook 33a formed at the tip of the arm 33 of the lock arm 29.

A shaft 40 is horizontally suspended between the side plates 16 and 17 inside the front panel 18, and one end of a rotating plate 41 is rotatably supported on the shaft 40.

On the free end side of the rotary plate 41, a bottle 42 protruding inward is rotatably supported by protrusions 43 protruding from both side edges of the cassette guide 24. 4
1 and the cassette guide 24 are in an interlocking relationship.

Further, a pin 44 is provided in the middle of the rotary plate 4I protruding toward the steel plate 16. It is slidably fitted inside.

Incidentally, a lock lever 46 is rotatably attached to the cassette guide 24L via a pin 47 at a position close to the side plate 16 near the cassette ejection lever 25. The lock lever 46 is located on the bottle 47 side, that is, on the lock arm 29
The projecting piece 46a is in a position where it can engage with the end M34d of the lock arm 29111 of the eject lever 34.

The end edge of the lock lever 46 opposite to the bin 47 is provided with a bin 4.
8 is provided protrudingly, and this bin 48 and the bin 26.2
A spring 49 bent in an rVJ shape is tensioned between 7 and 7, and gives the lock lever 46 the habit of always rotating in the zero direction in FIG. 2 about the pin 47.

The lock lever 46 has a protruding piece 46b protruding from the end of the bin 48Il and the edge of the cassette ejection lever 25011. Part 25d (Fold 1II
1) in the hanging position.

One end of a leaf spring 50 is fixed to the center of the upper surface of the rotating plate 41 by a pin 51.

A hub retainer 53 is attached to the lower surface of the free end side of the leaf spring 50 via a bearing 52.

A spindle 54 is attached below in a state facing the hub curve λ53. The spindle 54 is the eleventh
As shown in the enlarged view, the disk 55 is rotatably supported on the base plate 54a of the device and has a disk 55 fixed to its upper surface. A through hole is formed through which a freely provided spindle shaft 56 projects. The spindle shaft 56 is given the habit of moving in the direction in which it is always projected by a spring 57. Further, a drive pin 58 that fits into a drive hole 4 formed in the hub 2 of the magnetic disk is fitted into a part of the disk 55 so as to be able to move up and down, and is constantly moved upward by a leaf spring 59. It is given.

A pulley 60 is fixed to the lower end of the spindle 54. As shown in FIG. 8, a belt 63 is stretched between this pulley 60 and a pulley 62 fixed to the output shaft of a motor 61, transmitting two rotational forces.

On the other hand, as shown in FIG. 2, projecting pieces 64 and 64 are provided on the upper surface of the cassette guide 24 on the opposite side to the cassette ejection lever 25 and protrude from the front and back in the cassette insertion direction. The shaft 65 is horizontally suspended. A center portion of a herad load arm 66 is rotatably supported on this shaft 65.

A projecting piece 66a that projects toward the outside of the side plate 17 is provided at the outer end of the head load arm 66.
Below the side plate 17, a bottle 67 is placed on the outside of the side plate 17.
The tip of the horizontal part of the first rotating arm 68, on which the bushing arm 68 is pivoted during the first rotation, faces below the protruding piece 66a, and the vertical part of the bushing arm 68 is supported by the pin 6.
It is rotatably connected to one end of the load arm 70 via 9.

The @I end of the load arm 70 is connected to the front panel 18 and the [1 end 71a of a solenoid 71 fixed to the device in a χ4 measurement.

A spring 72 is fitted between the projecting piece 66a of the head load arm 66 and the bottle 67 and the bottle 73 which is provided with a protruding plate. This gives it the habit of turning clockwise.

A head arm 74 faces above the cassette guide 24 in a state corresponding to the leaf spring 50. A screw 77 is attached to a block 76 in which the base end of the head arm 74 is rotatably supported on the seek arm side, which will be described later, via a pin 75.
are connected via. The block 76 is given the ability to rotate counterclockwise in FIG. 6 by a torsion coil spring 78, and a magnetic head 79 on the movable side is fixed to the lower surface of the tip of the head arm 74.

The head arm 74 is formed of, for example, a leaf spring, and has a protruding piece 74a formed at its tip end on the side of the head load arm 66. The inner ends of arms 66 are engaged;
The head arm 74 is constantly pushed up by the inner end of the head load arm 66 pushed up by the force of the spring 72. Open corresponding to the head 79 [1 part 2
4c is formed on the cassette guide 24, and a head 80 on the fixed side is arranged on the lower side of the carriage, which will be described later, in correspondence with the head 79 on the moving side.

On the other hand, Fig. 2 (plan view), Fig. 15 (Ell same figure, 1st
As shown in Figure 6 (side sectional view), the stepper motor 81
is attached, and a lead screw 84 is inserted into the dowel 826 83c of the joint fitting 82 fixed to the output shaft.
One end of is connected. The other end of the lead screw 84 is rotatably supported by a bearing 85.

A gimbal spring 83 shown in FIG. 17 (plan view) is installed between the J-tooth screw 84 and the output shaft of the stepper motor 81.
are connected and pressed in opposite directions by a displacement amount 6 shown in FIG. Therefore, backlash in the thrust direction of the bearing 85 and the output shaft of the stepper motor 81 can be eliminated.

In FIG. 2, one end of a seek arm 86 is screwed into the lead screw 84, and a fixed lead par 87 is moved back and forth via the seek arm 86.

The seek arm 86 is attached to the outside of the carriage 88, and a portion of the carriage 88 on the opposite side to the seek arm 86 is guided by a guide bar 89 parallel to the lead screw 84. A bin 75, which supports the block 76, is horizontally suspended between a pair of protrusions 88a, 88a which are protruded from the carriage 88.

Below the tip y2i of the cassette guide 24, a pair of left and right leaf switches 90, 90 are mounted on the board 54a of the device.
is located. These leaf switches 90 are for detecting the presence or absence of a cassette and the front and back sides of the cassette.
It corresponds to the notch lO formed in the magnetic disk cassette l for detecting the front and back sides, and is mounted at a symmetrical position on the device.

In the method using a photocoupler shown in FIG. 14(a), the light emitting section 90a and the light receiving section 90b need to correspond to the notch lO on both sides of the cassette l, which tends to complicate the mechanism. Since it is necessary to keep current flowing through the portion 90a for light emission at all times, power consumption increases.

Therefore, if the system uses the microswitch shown in FIG. 14(b), the microswitch 90c will be replaced by the bin 90d
Since the presence or absence of the notch 10 can be known through the notch 10, it is only necessary to correspond to the notch 10 on one side of the cassette 1, which simplifies the mechanism. Furthermore, since no light-emitting member is required, power consumption can be reduced.

However, since the length dimension m of the microswitch 90c is large, the thickness dimension of the blue must be increased accordingly. Therefore, as mentioned above, when the switch 90 is used, the dimension m becomes smaller and the device is made into a 4-type device. can do.

Next, the operation of the apparatus of the present invention constructed as above will be explained.

Before installing the magnetic disk cassette L,
The dustproof door 19, 20 of 'F is in a state where the lower end of the upper dustproof door 19 is in contact with the outside of the folded part 20a of the upper end of the lower dustproof door 20 as shown in FIG. 9 due to the force of the torsion coil spring 23. It is closed with no gaps.

When the magnetic disk cassette l is installed in this state, the dustproof door 19, 20 is pushed open vertically.

At this time, the upper and lower dustproof doors 19 and 20 overlap, and the width of the door is correspondingly large.As shown in FIG. Distance between 2. can be made larger.

Therefore, the arm of the moment becomes longer, the door can be opened with less discomfort, and the magnetic disk cassette can be installed extremely easily.

The cassette inserted from the cassette insertion slot 18a is guided by the cassette guide 24 and advances, but at this time, a projection (not shown) hits the slide lever 7 of the cassette l, and as the cassette advances to the back, the shutter gradually lJ 6 will be held.

The magnetic disk cassette l eventually comes into contact with the folded E crest 25d at the inner end of the cassette ejection lever 25, and is moved forward against the tensile force of the coil spring 28.

Eventually, the protruding piece 25e of the cassette ejection lever 25 comes into contact with the arm 32 extending upwardly of the lock arm 29, and rotates the lock arm 29 clockwise in FIG. 5 against the pulling force of the coil spring 31. .

Then, as the lock arm 29 rotates, the front panel 18
The hook 33a of the arm 33 extending to the side is separated from the bottle 39. Therefore, the eject lever 34 is guided to the bin 35 by the tension of the spring 38, and the front panel 1811+
Move to 1.

As the eject lever 34 moves, the bottle 44 is pushed toward the lower nozzle J by a cam hole 45 formed in the shape of a "h". When the bottle 44 is pushed downward, the rotating plate 41 to which it is attached will move accordingly.
It is rotated clockwise in FIG. 6 about the center. As a result, the cassette guide 24 descends together with the cassette l.

The amount of descent of the cassette guide 24 at this time is amplified according to the ratio of the distance fies between the shaft 40 and the bin 44 and the distance e between the shaft 40 and the bin 42, as shown in FIG.

As the cassette guide 24 descends, the leaf spring 50
1, the hub presser 53 lowers and presses the hub 2 of the magnetic disk 12 housed in the magnetic disk cassette between it and the spindle 54. At this time, the end of the hub holder 53 is fitted into the center hole 3, and the spindle shaft 56 of the spindle 54 is also fitted into the center hole 3 from below, thereby centering the magnetic disk. If the drive hole 4 and the drive pin 58 are on the same axis, they are immediately fitted, but normally they are in contact with the lower surface of the hub 2, elastically deforming the leaf spring 59, and moving downward.

At this time, the downward movement of the cassette guide 24 is controlled by the rotating plate 4.
1, the distance e5 and the axis 40
The signal is amplified by an amount corresponding to the ratio from e to the hub suppressor 53.

When the magnetic disk cassette l reaches the loading reference position in this manner, the positioning pin P protruding from the substrate 54 of the apparatus is fitted into the positioning hole 8 of the cassette.

On the other hand, as the cassette ejection lever 25 moves forward during the above operation, the protrusion 46b of the lock lever 46 comes into contact with the end edge 25d of the cassette ejection lever 25, and the lock lever 46 moves forward at the 2 clock position in FIG. This prevents the cassette ejection lever 25 from moving backward, and it becomes locked.

As the cassette guide 24 descends, the head load arm 66 also descends, but the lower *m of the head arm 74 that descends along with this is not so large;
9 is in a state where the magnetic disk is sandwiched between the magnetic head 80 on the fixed side with a slight gap maintained between the magnetic disk 12 in the magnetic disk cassette 1 and the magnetic disk 12 in the magnetic disk cassette 1.

By the above-described operation, the 1M1 disk cassette 1 has been set in the apparatus R.

- Nono, the magnetic disk cassette descends like J double, and is loaded? ! j When the leaf switch 90 is located at the reference plane, the leaf switch 90 detects that the magnetic disk cassette l is installed,
One of the two leaf switches is turned on. At the same time, the front and back sides of the magnetic disk cassette 1 are detected.

When the installed state of the magnetic disk cassette is confirmed, the motor 61 is turned on, the pulley 60 is rotated via the belt 63, and the spindle 54 begins to rotate. As the spindle 54 rotates, the drive pin 58 is fitted into the drive hole 4 of the hub 2 while the spindle makes one rotation at most, and F! n
The air disk 12 starts rotating.

On the other hand, when the leaf switch detects that the magnetic disk cassette is installed, the solenoid 71 is energized and the rod 71a is retracted, so that the load arm 7
0 is pulled to the solenoid 71 (llIl), and as a result, the bushing arm 68 is rotated clockwise in FIG. This head load arm 66 is shown in II in Fig. 4.
The head arm 74 is rotated in the direction of the IF meter, its inner end 66b is lowered, and the head arm 74, which was engaged via the protrusion 74a, is freely lowered to a hanging state, and the head arm 74 is rotated by the force of the torsion coil spring 78. 74, the magnetic head 79 on the moving side descends, leaving a slight gap between the magnetic head 79 and the magnetic disk 1.
The magnetic head 80, which had been facing the magnetic head 2, comes into contact with the magnetic disk 12.

By the way, since the center of the head mead arm roller 6 is rotatably supported by the pin 65, the amount of movement of the head 79 is approximately twice that of the cassette guide 24, ensuring that the magnetic disk 12 comes into contact with.

Further, in parallel with the above-described operation, when the magnetic disk cassette l is set, the stepper motor 81 is rotated.
The lead screw 84 is rotated, the carriage 88 starts moving via the seek arm 86, and target information is written and read.

On the other hand, if you want to eject the disc cassette l, press the button B fixed to the tip of the bending part 34e extending toward the front panel 18 side of the eject lever 34.
The eject lever 34 moves forward against the tensile force of the coil spring 38, and the protrusion 25 of the cassette eject lever 25 in FIG.
The arm 32 of the lock arm 29, which has been rotated clockwise by being pushed by the arm 32, reaches the lower side of the arm 33, and as the arm 33 descends, it is locked again by the hook 33a.

On the other hand, the protruding piece 46a of the lock lever 46 is pushed as the eject lever 34 moves forward, and therefore the lock lever 46 is pushed forward.
6 is rotated counterclockwise around the bin 47 in FIG.
move away from d.

Further, when the eject lever 34 moves forward, the bottle 44, which has been at the lowermost position of the cam hole 45, moves to the uppermost position of the cam hole 45, as shown in FIG. Return to horizontal state.

When the rotary plate 41 becomes horizontal, the cassette guide 24 connected via the pin 42 is also pulled up in the -L direction, and the magnetic disk cassette l reaches the same level as at the start of loading.

In this state, as described above, the lock lever 46a protrusion 4
Since the end edge 25d of the cassette ejection lever 25 is unlatched by the end edge 25d of the cassette ejection lever 25 by the coil spring 28, the cassette ejection lever 25 suddenly moves forward to the front panel 18 (l) due to the tensile force of the coil spring 28.
lII, and the magnetic disk cassette l is pushed forward from the cassette insertion opening 18a by the bending portion 25d. Then, all the movable parts follow the opposite movement to the above-mentioned movement, &! ! The device is now in a standby state waiting for a disk cassette to be installed.

By the way, when the magnetic disk cassette l is removed,
The dustproof doors 19, 20 are brought into a closed state as shown in FIG. 9 by the force of the torsion coil spring 23, and the cassette insertion port 18a is completely closed.

Since the present embodiment is constructed as described below, the upper dustproof doors 19 and 20 partially overlap, so there is no gap between them, and an additional dustproof effect can be achieved.

Furthermore, the mounting state of the magnetic disk cassette is conventionally detected using a photoswitch, a microswitch, or the like, but in the present invention, the detection is performed using a leaf switch, so that the entire device can be made thinner.

In addition, since the magnetic disk center hub is clamped in conjunction with the cassette installation operation, there is no need to provide separate buttons or levers to operate them, making it extremely easy and reliable to operate the lamp. can be done.

Further, the movement of the moving 11M1 head can be amplified by devising the structure of the head rod arm 66, so that the device can be made thinner.

In addition, by using a lead screw as a mechanism for moving the carriage and connecting the lead screw and the stepper motor via a gimbal spring 83, play in the thrust direction is eliminated, achieving reliable operation and making the device more compact. can do.

Further, according to the present embodiment, the eject button B for ejecting the disc cassette is disposed close to the cassette insertion opening 18a of the front panel 18; protrude from Therefore, button B does not get in the way, and erroneous operation when inserting a disc can be prevented.

[Effects] As is clear from the following explanation, according to the disk device of the present invention, the operating member disposed close to the opening of the front panel through which the disk cassette is inserted and removed is activated only when the disk cassette is inserted. Since the operating member is configured to protrude from the front panel, the operating member does not get in the way, and an excellent effect can be obtained in that erroneous operation when inserting a disk cassette can be prevented.

[BRIEF DESCRIPTION OF THE DRAWINGS] The figures are for explaining one embodiment of the present invention, and FIG. 1 is a perspective view of a magnetic disk cassette installed in the device of the present invention, FIG. 2 is a plan view of the device, and FIG. The figure is a front view, Figure 4 is a front view with the front panel removed, Figure 5 is a side view, and Figure 6 is a front view.
The figure is a partially vertical side view, Figure 7 is a left side view, Figure 8 is a bottom view, Figures 9 and 10 are side views explaining the structure of the dust-proof door, and Figure 11 is an explanation of the structure of the spindle. Fig. 12 is a partially enlarged longitudinal sectional side view; Fig. 13 is a partially enlarged plan view;
)(b) is a side view showing a single-opening type dustproof door and a double-opening type dustproof door, respectively; FIGS. 14(a) and 14(b) are side views showing a configuration in which the notch of the cassette is detected by a photocoupler and a microswitch, respectively; 15 and 16 are an exploded perspective view and a side sectional view illustrating the lead screw connection mechanism, and FIG. 17 is a plan view of the gimbal spring. l...Magnetic disk cassette 2...-Hub 3...Center hole 4-...Drive hole 12...Magnetic disk 16.17...Side plate 18...Front panel 18a...Cassette insertion slot 19.20... - Dustproof door 23... Torsion coil spring 24... Cassette guide 25... Cassette ejection lever 29... Lock arm 34... Eject lever 41... Rotating plate 42. 44...Bin 45--Cam hole 46...Lock lever-50
... Leaf spring 53 ... Hub holder 54 - ... Spindle 61 ... Motor 66 ... Head load arm 71 ... Solenoid 79.80 ... Magnetic head 81 ... Stepper motor 83 - ...・Gimbal spring 84-- Lead screw 86... Seek arm 88-- Carriage 90... Leaf switch @
1 Figure 9 Figure 10 Figure 11 Figure 112 Figure 13 (a) Figure 14 (Q) Figure 13 (b) Figure 14 (b) 0c Figure 15 Figure 16 Figure 17

Claims (1)

[Scope of Claims] 1) A disk device using a disk cassette having a shutter for opening and closing a head window that exposes a rotatably stored disk to the outside, comprising an opening into which the disk cassette is inserted and removed, and the disk. a front panel in which an operating member for ejecting the cassette is arranged in parallel; a first position that holds the disc cassette and allows the disc cassette to be inserted and removed through the opening; a cassette guide that is transported between a second position where recording or playback can be performed; and a cassette guide that is moved between first and second positions corresponding to the first position and second position of the cassette guide, respectively. an eject lever that is freely arranged and that regulates the position of the cassette guide according to the movement position thereof and also regulates the position of the operating member relative to the front panel; a lock that locks the eject lever at the second position away from the front panel when a disc is not inserted, and releases this locked state when the disc cassette is inserted; and means for moving the eject lever by an elastic means by releasing the locked state of the locking means upon insertion of the disk cassette, thereby causing the operating member coupled to the eject lever to protrude from the front panel. A disk device characterized in that the cassette guide can be returned to the first position by using the cassette guide.