JPH08249845A - Disk device - Google Patents

Abstract

PURPOSE: To prevent damage in a magnetic head and a disk and destruction in the recording information of the disk by engaging or moving an actuator turning the magnetic head of its tip to a stoppage position depending on the detection result of a loading state of a cartridge. CONSTITUTION: When a detection mechanism 34 or 37 detects the insertion or the taking-out of the cartridge 22, a controller 30 releases a lock means 35, or operates a retreat means 31. Thus, the turning actuator 25 is moved to a loading position or a retreat position, and when recording/reproducing state or an ejection button 32 is operated, the actuator 25 is locked to the stoppage position. Simultaneously, an ejection mechanism 33 ejects the cartridge 22 from a main body by signals of the mechanisms 34, 37, and the device returns to an initial state. Thus, the erroneous loading of the actuator 25, the erroneous taking-out of the cartridge, the damage in a tip head slider and the magnetic head, and the destruction in the recording information of the magnetic disk are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a mass storage device for an information processing device, and more particularly to a rotating disk type storage device such as a magnetic disk or an optical disk.

[0002]

2. Description of the Related Art Conventionally, a magnetic disk device is shown in FIG.
It is configured as shown in FIG. In FIG. 6, the magnetic disk device 1 includes a housing 2, a spindle motor 3, a magnetic disk 4 which is rotationally driven by the spindle motor 3, and a rotary actuator 5.

A motor 5e of the rotary actuator 5 is provided with a voice coil 5f. When a driving voltage is supplied to the voice coil 5f from the outside, the arm 5c is provided.
On the basis of the force generated by the magnetic field of the magnet 5g and the current flowing through the voice coil 5f,
Is pivoted around. As a result, the head slider 5a attached to the other end of the arm 5c is moved to the arrow R in FIG.
As indicated by 3, the magnetic disk 4 is moved substantially in the radial direction. Thus, the magnetic head 6 included in the slider 5a makes a seek operation with respect to the magnetic disk 4. As a result, the magnetic head 6 attached to the head slider 5a records / reproduces information on / from a predetermined track on the magnetic disk 4.

In the magnetic disk device 1 having such a structure, the spindle motor 3 starts up at the time of start-up with the head slider 5a being in contact with the innermost circumference of the magnetic disk 4. Therefore, at the time of startup, the head slider 5
After moving while rubbing the surface of the magnetic disk 4 first, “a” is levitated from the surface of the magnetic disk 4. Similarly, when the magnetic disk 4 is stopped, the head slider 5a contacts the innermost circumference of the magnetic disk 4.

Therefore, such a magnetic disk drive 1
Is CSS (Contact Start Stop)
Although called a method, there is a problem that the surface of the magnetic disk 4 may be damaged because the head slider 5a comes into contact with the surface of the magnetic disk 4 at the time of starting and stopping.

Therefore, in recent years, at the time of starting and stopping,
A magnetic disk device is used in which the head slider 5a is supported while being separated from the surface of the magnetic disk 4. Such a magnetic disk device is configured as shown in FIG. 7, for example. In FIG. 7, the magnetic disk device 7 includes a housing 2, a spindle motor 3, a magnetic disk 4, and a rotary actuator 5 as shown in FIG.
The magnetic disk device 1 has the same configuration. The magnetic disk device 7 further includes a lamp 8 on the housing 2 and a hemispherical convex portion 9 near the tip of the rotary actuator 5.

When the rotary actuator 5 is rotated, the ramp 8 is inclined like a slide along the locus of the hemispherical convex portion 9, and in the illustrated case, the right end edge is low, It is formed so that the left side is higher.

The hemispherical convex portion 9 is provided integrally with the arm 5c of the rotary actuator 5. For example, the convex portion 9 is fixed and held to an extension portion (not shown) of the arm 5c.

According to the magnetic disk device 7 having such a structure, when the rotary actuator 5 is not used, as shown in FIG.
At the stop position shown in, the convex portion 9 rests on the outer surface of the magnetic disk 4 and rests on the left surface of the ramp 8. As a result, the head slider 5a of the rotary actuator 5 is separated from the surface of the magnetic disk 1 and held in the air.

When starting from this state, the spindle motor 3 first starts up and reaches a predetermined number of revolutions, and then the rotary actuator 5 moves in the direction R4 in FIG. 7 (the above operations are loaded). That). At this time, the rotary actuator 5 rotates while the convex portion 9 slides along the slope of the lamp 8. And the convex portion 9
Is separated from the ramp 8 and the head slider 5a is pressed against the surface of the magnetic disk 4 by the elasticity of the elastic member 5b. The head slider 5a is pressed by the air flow between the head slider 5a and the surface of the magnetic disk 4. Slider 5a
The levitation force acts on the head slider 5a.
Does not contact the surface of the magnetic disk 4.

When stopped, the rotary actuator 5 rotates toward the stop position shown in FIG. On this occasion,
The head slider 5 a is separated from the surface of the magnetic disk 4 by the convex portion 9 of the rotary actuator 5 rising on the slope of the ramp 8 and sliding along the slope.
When the rotary actuator 5 reaches the stop position, the convex portion 9 moves to the higher side of the slope of the ramp 8 so that the head slider 5a is separated from the surface of the magnetic disk 4 and is held in the air. (The above operation is called unload).

Thus, the head slider 5a of the rotary actuator 5 has the magnetic disk 4 when starting and stopping.
Since it does not contact the surface of N-CSS (Non
It is called the CSS) method or the dynamic load-unload method.

By the way, when such a dynamic load-unload system is adopted, the magnetic head 6 is in a state where the rotary actuator 5 is retracted to the stop position.
The magnetic disk 4 and the magnetic disk 4 are not physically bound to each other.
Therefore, the magnetic disk 4 can be taken out without damaging the magnetic head 6 or the magnetic disk 4.
Utilizing this, a so-called cartridge type magnetic disk device is known in which the magnetic disk 4 is made into a cartridge so as to be detachable.

Such a cartridge type magnetic disk device is constructed, for example, as shown in FIG. In FIG. 8, a cartridge type magnetic disk device 10 includes a main body 11 in which a housing 2, a spindle motor 3, a rotary actuator 5 and a lamp 8 are incorporated, and a cartridge mounting portion 11 a provided in the main body 11. And a removable cartridge 12.

The cartridge 12 accommodates the magnetic disk 4 inside, and when it is inserted into the cartridge mounting portion 11a of the main body 11, the rotary actuator 5 is provided.
The head slider 5a has an opening (not shown) so that the head slider 5a can approach the magnetic disk 4.

According to the cartridge type magnetic disk device 10 having such a structure, the cartridge 12 is attached to the cartridge mounting portion 1 of the main body 11 as shown by an arrow A in FIG.
The magnetic disk 4 in the cartridge 12 is rotationally driven by the spindle motor 3 by being inserted into the cartridge 1a. Then, the rotary actuator 5 rotates, the head slider 5a provided near the tip thereof is moved to a predetermined track on the magnetic disk 4, and the magnetic head 6 is moved.
However, the information signal is recorded / reproduced on / from the track.

Further, a so-called removable magnetic disk device in which the magnetic disk device itself is configured to be removable is also known.

Such a removable magnetic disk device is constructed, for example, as shown in FIG. In FIG.
The removable magnetic disk device 13 includes a main body 14 in which a housing 2, a spindle motor 3, a magnetic disk 4, a rotary actuator 5, and a lamp 8 are incorporated, and a mounting portion 15 into which the main body 14 is detachably inserted. Is included.

The main body 14 is formed, for example, in the shape of a card, and the inside thereof is constructed in substantially the same manner as the magnetic disk device 7 shown in FIG. A connector 16 including contacts for connecting a signal line and a power supply line is provided along the edge.

The mounting portion 15 is built in, for example, a personal computer or the like, or is configured as a single unit connected to the personal computer or the like, and the main body 14 is provided.
15a into which the slot 15a is inserted and the connector 1 of the main body 14
6 is connected to the connector 17 and the main body 14 is slot 1
The eject lever 18 for pushing out from 5a is included. In the illustrated case, the eject lever 18 includes a first lever 18a that extends laterally at the innermost portion of the slot 15a of the mounting portion 15 and is pivotally supported substantially at the center, and a first lever 18a connected to the first lever 18a. The second lever 18b. The first lever 18a has one end (the right end in the case shown) slightly protruding toward the slot inlet, and the other end swingably connected to one end of the second lever 18b. The second lever 18b extends toward the entrance of the slot 15a, and the other end thereof slightly projects from the mounting portion 15.

According to the detachable magnetic disk device 13 having such a structure, the connector of the body 14 is inserted by inserting the body 14 into the slot 15a of the mounting portion 15 as shown by the arrow B in FIG. 16 is a connector 1 of the mounting portion 15
Connected to 7. As a result, the magnetic disk 4 in the main body 14 is rotationally driven by the spindle motor 3, and the rotary actuator 5 rotates, so that the head slider provided near the tip of the rotary actuator 5 moves to a predetermined position on the magnetic disk 4. The magnetic head 6 is moved to the track No. 1 and the magnetic head 6 records / reproduces the information signal on / from the track.

When the main body 14 is taken out from the mounting portion 15, the other end of the second lever 18b of the eject lever 18 projecting from the mounting portion 15 is pushed in as shown by an arrow C, so that the second The lever 18b swings the first lever 18a, and one end of the first lever 18a is
The main body 14 is pushed toward the entrance of the slot 15a.
As a result, the main body 14 has the slot 15 a of the mounting portion 15.
Will be pushed out from.

Further, a detachable cartridge type magnetic disk device in which the above-mentioned cartridge type magnetic disk device 10 and the detachable type magnetic disk device 13 are combined is also known.

Such a detachable cartridge type magnetic disk device is constructed as shown in FIG. 10, for example. In FIG. 10, a removable cartridge type magnetic disk device 19 is a main body 1 in which a housing 2, a spindle motor 3, a rotary actuator 5 and a lamp 8 are incorporated.
1 and a cartridge mounting portion 1 provided on the main body 11
The cartridge 1 includes a cartridge 12 that is attachable to and detachable from the la, and a mounting portion 15 into which the main body 14 is detachably inserted.

The main body 11 has a card-like outer shape as in the case of the main body 14 in FIG. 9, and the inside thereof is constructed in substantially the same manner as the magnetic disk device 10 shown in FIG. A connector 16 including contacts for connecting a signal line and a power supply line is provided along the side edge (the upper edge in the figure).

The cartridge 12 houses the magnetic disk 4 therein, and when it is inserted into the cartridge mounting portion 11a of the main body 11, the rotary actuator 5 is provided.
The head slider 5a has an opening (not shown) so that the head slider 5a can approach the magnetic disk 4.

The mounting portion 15 has the same structure as the mounting portion 15 in FIG. 9, and is built in, for example, a personal computer or the like, or is configured as a single unit connected to the personal computer or the like, and the main body 11 is inserted therein. Slot 15a, a connector 17 to which the connector 16 of the main body 14 is connected, and an eject lever 18 for pushing the main body 14 out of the slot 15a.

According to the cartridge type magnetic disk device 19 having such a structure, the cartridge 12 is inserted into the cartridge mounting portion 11a of the main body 11 as shown by an arrow D in FIG. As shown by the arrow E in FIG. 10, it can be inserted into the slot 15a of the mounting portion 15.

[0029]

However, in any of the magnetic disk devices 10, 13 and 19 configured as described above, the means for detecting the mounting state of the cartridge 12 or the main body 11 is as follows. Not equipped. For this reason, there is a possibility that the rotary actuator 5 may be loaded in the cartridge non-mounted state, or the cartridge 12 or the main body 11 may be taken out during startup in the cartridge mounted state.

The magnetic disk devices 10, 13,
None of 19 has means for restraining / fixing the rotary actuator 5. Therefore, when a strong shock is applied to the magnetic disk device during transportation of the magnetic disk device, the rotary actuator 5 may jump out of the stop position on the ramp due to the shock and hit the surface of the magnetic disk device. There is a problem that there is.

Thus, in such a case, the tip end portion of the elastic member 5b of the rotary actuator 5, the head slider 5a, the magnetic head 6 and the like are damaged, or the cartridge 12 and the main body with respect to the damaged magnetic disk device. When 11 is inserted, there is a problem that the magnetic disk 4 in the cartridge 12 and the main body 11 is damaged and the information recorded on the magnetic disk 4 is destroyed.

In view of the above points, the present invention detects a mounting state of a removable portion such as a cartridge or a main body, and eliminates damage to the removable portion and the disk due to the removal of the removable portion. The purpose is to provide a device.

[0033]

According to the present invention, the above object is to provide a cartridge which is attachable to and detachable from a main body, and a disk which is a recording medium housed in the cartridge.
A drive unit for rotationally driving a disc in a cartridge mounted on the main body, a rotary actuator rotatably supported by the disc rotationally driven by the drive unit, and a tip end side of the rotary actuator. The present invention is achieved by a disk device including a magnetic head for recording / reproducing a recorded disk and a detection means for detecting a mounting state of a cartridge.

Further, according to the present invention, the above object is to provide a main body which is attachable to and detachable from a mounting portion, a cartridge which is attachable to and detachable from the main body, and a disk which is a recording medium accommodated in the cartridge. A drive unit for rotationally driving a disc in a cartridge mounted on the main body, a rotary actuator rotatably supported by the disc rotationally driven by the drive unit, and a tip end side of the rotary actuator. The present invention is achieved by a disk device including a magnetic head for recording / reproducing a recorded disk and a detection means for detecting a mounting state of a cartridge.

Preferably, the disk device is configured to rotate when the detecting means detects the non-mounting of the cartridge, lock means for locking the rotary actuator in the stop position, and when the detecting means detects the cartridge removal. Evacuation means for moving the dynamic actuator to the stop position are provided.

Further, preferably, in the disk device of the present invention, the detecting means detects whether or not the cartridge is mounted on the main body or the mounting portion, and further, a preliminary operation of the operation for taking out the cartridge is performed. It has a control unit that detects whether or not the disk has been broken, and then detects whether or not the magnetic head has unloaded the disk, and if not, unloads the disk. Further, preferably, the disk device of the present invention has a control unit that controls so that the disk can be taken out after confirmation of the unloading or after the unloading is performed.

[0037]

According to the above construction, the detecting means detects the mounting state of the cartridge, so that the non-mounting of the cartridge is detected even when the rotary actuator is loaded in the non-mounting state of the cartridge. Prevents the rotary actuator from being accidentally loaded and prevents the cartridge from being accidentally taken out because the cartridge mounting is detected during recording or playback of the disc in the cartridge mounted state. Will be done.

When the detection means detects the non-mounting of the cartridge, if the locking means for electrically or mechanically locking the rotary actuator at the stop position is provided, in the non-mounting state of the cartridge, Even if the rotary actuator is about to be loaded, the rotary actuator is locked by the locking means, so that the rotary actuator is prevented from being accidentally loaded and, for example, when the disk device is transported. Even if a strong impact or the like is applied, the rotary actuator is locked by the lock means, so that the disk does not jump out from the stop position and damage the disk.

When the detecting means detects the cartridge removal, and if the retracting means for electrically or mechanically moving the rotary actuator to the stop position is provided, the disk recording is performed in the cartridge mounted state. Alternatively, when the cartridge is taken out during reproduction, the rotary actuator is first moved to the stop position by the retracting means, so that the cartridge is prevented from being taken out while the rotary actuator is still loaded.

[0040]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to FIGS. In addition, since the Examples described below are preferred specific examples of the present invention, various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. The embodiment is not limited to these embodiments unless otherwise stated.

1 and 2 show an embodiment of a cartridge type magnetic disk device to which the present invention is applied.

In FIG. 1, the cartridge type magnetic disk device 20 includes a main body 21 and a cartridge 22 which is attachable to and detachable from the main body 21. The main body 21 includes a housing 23, a spindle motor 24 as a driving unit, a rotary actuator 25, and a lamp 26, and a cartridge mounting portion 21a into which the above cartridge is detachably inserted.

The cartridge 22 accommodates a magnetic disk 22a as a recording medium therein and also has a main body 2
An opening (not shown) so that the head slider 25a of the rotary actuator 25 can approach the magnetic disk 22a when the head slider 25a is inserted into the cartridge mounting portion 21a.
It has.

The casing 23 is formed substantially flat, for example, from an aluminum alloy, and the spindle motor 24 is arranged on the flat portion.

The spindle motor 24 is constructed as, for example, a flat brushless motor, and the magnetic disk 22 is controlled by being driven and controlled so that the angular velocity becomes constant.
It is designed to rotate a.

Further, the rotary actuator 25 includes a flying type head slider 25a and the head slider 2a.
Elastic member 25b supporting 5a, and this elastic member 25b
An arm 25c for supporting the arm 25c, a vertical shaft 25d for rotatably supporting one end of the arm 25c, and a motor 25e for rotating the arm 25c around the vertical shaft 25d.

When the head slider 25a is pressed against the surface of the rotating magnetic disk 22a by the elastic member 25b, the head slider 25a is magnetized by the air flow flowing between the lower surface of the head slider 25a and the surface of the magnetic disk 22a. It floats from the surface of the disk 22a at a slight distance.

The elastic member 25b acts as a spring based on its elasticity and presses the head slider 25a against the surface of the magnetic disk 22a with a predetermined load. Arm 2
The reference numeral 5c is made of a material having rigidity, and is rotated around the vertical axis 25d to move the head slider 25a in the radial direction of the magnetic disk 22a to perform a seek operation. As a result, the head slider 25a
The magnetic head 27 attached to the magnetic disk 22.
It allows access to certain tracks on a.

The motor 25e comprises a voice coil 25f attached to the other end of the arm 25c and a magnet 25g fixedly arranged on the housing 23. The polarities of the winding of the voice coil 25f and the magnet 25g are arranged such that the voice coil 25f is driven in the horizontal direction by supplying a driving voltage from the outside to the voice coil 25f.

Therefore, when a driving voltage is externally supplied to the voice coil 25f, the arm 25c rotates around the vertical axis 25d based on the force generated by the magnetic field of the magnet 25g and the current flowing through the voice coil 25f. Is rotated to. As a result, the head slider 25a attached to the other end of the arm 25c is moved substantially in the radial direction of the magnetic disk 22a, as indicated by the arrow R in FIG. Thus, the magnetic head 27 provided on the slider 25a performs a seek operation on the magnetic disk 22a, so that the magnetic head 27 attached to the head slider 25a records information on a predetermined track on the magnetic disk 4. Play back.

FIG. 2 shows the electrical construction of the magnetic disk device 20 shown in FIG. In FIG. 2, the magnetic disk device 20 includes a controller 30 as a control unit.
And an unload mechanism 31 as a retracting means for unloading the rotary actuator 25, an eject button 32, and an eject mechanism 33. The controller 30 drives and controls the voice coil motor 25e of the rotary actuator 25 to move the head slider 25a to the magnetic disk 22 in the cartridge 22.
The predetermined track a is accessed. The unload mechanism 31 has an eject button 32.
Is operated, the rotary actuator 25 is moved to the vertical shaft 2
By swinging around 5d, the convex portion (not shown) provided on the arm 25c is raised on the lamp 26,
The head slider 25a is separated from the surface of the magnetic disk 22a, and the eject mechanism 33 is operated,
The cartridge 22 is attached to the cartridge mounting portion 21
It is discharged from a.

The above structure is the same as that of the conventional cartridge type magnetic disk device 10 shown in FIG.
In the magnetic disk device 10 according to the present embodiment, the insertion detecting mechanism 34 as a detecting means for detecting the insertion of the cartridge 22 and the arm 2 of the rotary actuator 25.
An arm lock mechanism 35 as a lock unit that locks 5c, an eject lock button 36 that locks the eject button 32, and an ejection detection mechanism 37 as a detection unit that detects ejection of the cartridge 22 are provided.

The insertion detecting device 34 is disposed in the cartridge mounting portion 21a of the main body 11 (see FIG. 1),
It is configured as follows. That is, as shown in FIG. 3, the insertion detecting device 34 includes a lever 34a, a switch plate 34b, and a contact 34c. The lever 34a moves in the cartridge mounting portion 21a in the insertion direction of the cartridge 22 so that the lever 34a is pushed by a part of the cartridge 22 when the cartridge 22 is inserted into the cartridge mounting portion 21a of the main body 21. It is arranged as possible.

The switch plate 34b is integrally attached to the lever 34a so as to move together with the lever 34a. The contact 34c has two contact points 34c-
1, 34c-2, which are arranged side by side along the path of movement of the switch plate 34b. When the lever 34a is not pushed by the cartridge 22, the switch plate 34
b contacts only one contact 34c, but lever 34a
When the cartridge is pushed by the cartridge 22, the switch plate 34b comes into contact with both contacts 34c at the same time. Further, of the contacts 34c, one contact 34c-1 is connected to the detection terminal 34d, and
The constant voltage Vcc is supplied via the resistor 34e. The other contact 34c-2 is grounded.

Therefore, when the cartridge is not attached, as shown in FIG.
Not pushed by 2. Therefore, since the two contacts 34c-1 and 34c-2 of the contact 34c are open to each other, the voltage of the detection terminal 34d is substantially equal to the constant voltage Vcc and is at the H level. On the other hand, in the cartridge mounted state, the lever 34a is pushed by the cartridge 22, as shown in FIG. This makes contact 3
The two contacts 34c-1 and 34c-2 of 4c are short-circuited via the switch plate 34b, so that the current from the constant voltage Vcc flows from the resistor 34e to the ground GN via the contact 34c.
Will fall to D. Therefore, the voltage of the detection terminal 34d becomes almost the same voltage as the ground GND, that is, the L level.

Thus, the voltage at the detection terminal 34d is input to the controller 30, and the controller 30 determines whether this voltage is at the H level or the L level,
The mounting state of the cartridge 22 is determined. Then, the controller 30 controls so that the rotary actuator 25 is not loaded when the cartridge 22 is not mounted.

The arm lock mechanism 35, when the voltage from the detection terminal 34d of the insertion detection mechanism 34 is at the H level,
It operates by this H level voltage to lock the arm 25c of the rotary actuator 25, and unlocks the lock when the voltage from the detection terminal 34d of the insertion detection mechanism 34 is at the L level. The eject lock button 36 can be restored to its original position by an elastic member such as a spring. The eject lock button 36 is disposed adjacent to the eject button 32. When the eject button 32 is operated, the eject lock button 36 is The eject button 32 is operated while pressing the eject lock button 36 or after pressing the eject lock button 36.

Here, the take-out detection mechanism 37 is constructed in the same manner as the insertion detection mechanism 34 described above, and when the eject lock button 36 is pushed, its contact point is closed and the detection terminal (not shown) is opened. Voltage is from H level to L
It is configured to flip to a level. Thus, the voltage at the detection terminal of the take-out detection mechanism 37 is input to the controller 30, and the controller 30 outputs this voltage at H level.
The removal state of the cartridge 22 is determined by determining whether it is the level or the L level. Then, when the controller 30 detects that the cartridge 22 is taken out and the rotary actuator 25 is not at the stop position, the controller 30 forcibly moves the rotary actuator 25 to the stop position.

The disk device 20 according to this embodiment is configured as described above, and its operation will be described below with reference to the flowchart of FIG.

First, in the initial state of step S0, the cartridge 22 is not inserted in the cartridge mounting portion 21a of the main body 21. Therefore, since the contacts of the insertion detection mechanism 36 and the extraction detection mechanism 37 are open, the voltage of the detection terminal is at the H level.

At step S1, when the cartridge 22 is inserted into the cartridge mounting portion 21a of the main body 21,
In step S2, the contact 34c of the insertion detection mechanism 34
Is closed by moving the switch plate 34b.

As a result, in step S3, the voltage of the detection terminal 34d is inverted to the L level, so that the controller 30 determines that the cartridge 22 is mounted,
The arm lock mechanism 35 unlocks and puts the eject button 32 in a standby state.

Further, in step S4, the controller 30 receives a recording or reproduction command from an operation unit (not shown), controls the rotary actuator 25, and rotates the arm 25c to load it.

Thus, in step S5, when the eject lock button 36 is not operated, the magnetic head 26 attached to the head slider 25a of the rotary actuator 25 is moved to the predetermined position on the magnetic disk 22a in the cartridge 22. Access to the track and record or reproduce information (read / write) in step S6
Perform

Thereafter, in step S7, if the eject lock button 36 is not operated, in step S8, when the magnetic disk device 20 is in use, the process returns to step S6 to continue recording or reproducing information. To do. When the use of the magnetic disk device 20 is stopped in step S8, the unload mechanism 31 unloads the rotary actuator 25 in step S9, and then the process returns to step 5. In this case, subsequently, as a normal procedure, the eject lock button 36 is operated.

On the other hand, in step S5 or step S7, if the eject lock button 36 is operated by a normal procedure or by mistake, the contact of the take-out detection mechanism 37 is closed, S
At 10, the voltage at the detection terminal is inverted from H level to L level.

As a result, the controller 30 determines that the cartridge is taken out. At this time, if the eject lock button 36 is erroneously operated, the rotary actuator 25 has not been unloaded.
At 11, it is confirmed whether or not the rotary actuator 25 has already been unloaded. If not, then at step S12, the controller 30 actuates the unload mechanism 31 to turn it. The dynamic actuator 25 is unloaded and moved to the stop position.

Thereafter, when the eject button 32 is operated in step S13, the arm lock mechanism 35 operates in step 14 to turn the rotary actuator 25.
The arm 25c is locked at the stop position, and the voltage of the detection terminal of the insertion detection mechanism 34 and the voltage of the detection terminal of the extraction detection mechanism 37 are both reset from the L level to the H level.

Then, in step S15, the eject mechanism 33 operates to eject the cartridge 22 from the cartridge mounting portion 21a of the main body 21 and return to the initial state of step S0.
Control ends.

In the above embodiment, the insertion detecting mechanism 3 is used to detect the mounting state of the cartridge 22.
4 and the take-out detection mechanism 37 are provided, but by the movement of both insertion of the cartridge 22 into the cartridge mounting portion 21a of the main body 21 and pushing of the eject lock button 36, a link or the like is used. By adjusting the timing, it is possible to detect the insertion and removal of the cartridge with only one detection mechanism.

Further, the insertion detection mechanism 34 and the removal detection mechanism 37 are not limited in their configurations and installation locations as long as the insertion and removal of the cartridge 22 can be reliably detected. For example, the insertion detection mechanism 34 is
Although it is provided in the cartridge mounting portion 21a of the main body 21 in FIG. 1, the present invention is not limited to this and may be provided at another position in the main body 21. Further, the insertion detection mechanism 34 is configured such that when the cartridge 22 is inserted, the contact 34c is closed and the voltage of the detection terminal 34d is inverted to the L level, but the invention is not limited to this.
May be configured to invert from the L level to the H level.

In the above embodiment, the insertion detection mechanism 34 and the removal detection mechanism 37 are designed so that their detection is performed by mechanical means such as sliding of the switch plate to the contact. It is possible to use a so-called electrical means for reversing the H level and the L level by attaching and detaching 22 and an optical means such as a photo interrupter.

Further, in the above embodiment, the arm lock mechanism 35, the unload mechanism 31, the eject mechanism 33.
Are configured to operate independently at a predetermined timing, but may be centrally controlled by the controller 30.

Further, although the above embodiment shows the case where the present invention is applied to the conventional cartridge type magnetic disk device 10 shown in FIG. 8, the present invention is not limited to this, for example, the removable magnetic disk device of FIG. It is obvious that the present invention can be applied to 13 and the removable cartridge type magnetic disk device 19 of FIG. Here, in the case of the removable magnetic disk device, a detection means for detecting the mounting state of the main body, not the cartridge, is provided, and in the case of the removable cartridge type magnetic disk device, the mounting state of the cartridge in the main body. And a detection means for detecting the mounting state of the main body on the mounting portion.

Although the above embodiments have been described with respect to the magnetic disk device, the present invention is not limited to this, and the present invention is applied to a disk device for recording or reproducing other kinds of disks such as a magneto-optical disk and an optical disk. It is also possible.

[0076]

As described above, according to the present invention, the detection means detects the mounted state of the cartridge, so that even if the rotary actuator is loaded in the cartridge non-mounted state, Since the non-attachment is detected, the rotary actuator is prevented from being accidentally loaded. Further, in the cartridge mounted state, since the cartridge mounting is detected during the recording or reproducing of the disc, it is possible to prevent the cartridge from being accidentally taken out. Therefore, it is possible to prevent the head slider and the magnetic head of the rotary actuator from being damaged by preventing the rotary actuator from being erroneously loaded when the cartridge is not mounted.
Moreover, the disc is not damaged and the information recorded on the disc is not destroyed.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing the overall configuration of an embodiment of a magnetic disk device according to the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the magnetic disk device of FIG.

3 is a schematic diagram showing a configuration of an insertion detection device in the magnetic disk device of FIG.

4 is a schematic diagram showing an operating state of an insertion detecting device in the magnetic disk device of FIG. 1. FIG.

5 is a flowchart showing a cartridge detecting operation in the magnetic disk device of FIG.

FIG. 6 is a schematic plan view showing an example of a conventional magnetic disk device.

FIG. 7 is a schematic plan view showing an example of a conventional dynamic load-unload type magnetic disk device.

FIG. 8 is a schematic plan view showing an example of a conventional cartridge type magnetic disk device.

FIG. 9 is a schematic plan view showing an example of a conventional removable magnetic disk device.

FIG. 10 is a schematic plan view showing an example of a conventional removable cartridge type magnetic disk device.

[Explanation of symbols]

 20 cartridge type magnetic disk device 21 main body 21a cartridge mounting portion 22 cartridge 22a magnetic disk 23 housing 24 spindle motor 25 rotary actuator 25a head slider 25b elastic member 25c arm 25d vertical axis 25e voice coil motor 25f voice coil 25g magnet 26 lamp 27 Magnetic Head 30 Controller 31 Unload Mechanism 32 Eject Button 33 Eject Mechanism 34 Insertion Detection Mechanism 35 Arm Lock Mechanism 36 Eject Lock Button 37 Ejection Detection Mechanism

Claims (14)

[Claims] 1. A cartridge removable from a main body, a disk serving as a recording medium accommodated in the cartridge, a drive means for rotationally driving the disk in the cartridge attached to the main body, and a rotation by the drive means. A rotary actuator that is swingably supported with respect to the driven disk, a magnetic head that is provided at the tip of the rotary actuator for recording / reproducing the disk, and a detection unit that detects the mounting state of the cartridge. A disk device comprising: 2. The disk device according to claim 1, wherein the detecting means is a detecting means for detecting mounting of a cartridge. 3. The disk device according to claim 2, further comprising a lock unit that locks the rotary actuator at a stop position when the detection unit detects that the cartridge is not mounted. 4. The disk device according to claim 3, wherein the lock means electrically locks the rotary actuator. 5. The disk device according to claim 3, wherein the lock means mechanically locks the rotary actuator. 6. The disk device according to claim 1, wherein the detection unit is a detection unit that detects removal of a cartridge. 7. The disk device according to claim 6, further comprising a retracting unit that moves the rotary actuator to a stop position when the detecting unit detects that the cartridge is taken out. 8. The disk device according to claim 7, wherein the retracting means electrically moves the rotary actuator. 9. The disk device according to claim 7, wherein the retracting means mechanically moves the rotary actuator. 10. The disk device according to claim 1, wherein the detection unit is a detection unit that detects mounting and removal of a cartridge. 11. A lock means for locking the rotary actuator at a stop position when the detecting means detects the cartridge non-mounting, and a stop position for the rotary actuator when the detecting means detects the cartridge removal. 11. The disk device according to claim 10, further comprising: a retracting unit that moves the disk to the disk. 12. A main body that is attachable to and detachable from a mounting portion, a cartridge that is attachable to and detachable from the main body, a disc that is a recording medium accommodated in the cartridge, and a disc in the cartridge that is attached to the main body. Driving means for rotationally driving, rotary actuator swingably supported on the disk rotationally driven by the driving means, and magnetic head for recording / reproducing the disk provided on the tip side of the rotary actuator. And a detection unit that detects a mounting state of the cartridge. 13. The detecting means detects whether or not the cartridge is mounted on the main body or the mounting portion, and further detects whether or not a preliminary operation for taking out the cartridge is performed. 13. A control unit for detecting whether or not unloading of the disk by the magnetic head has been performed, and controlling so as to unload if not performed.
The disk device described in any one of 1. 14. The disk device according to claim 13, further comprising a control unit that controls so that the disk can be taken out after confirming the unloading or after the unloading is performed. .