JPH08249851A - Disk device and its inside stopper - Google Patents

Abstract

PURPOSE: To prevent damage in an attaching/detaching part and a disk by providing a stopper movable to each position restricting a turning actuator to a stop position when not using, releasing the restriction when using and limiting the turning to the inside. CONSTITUTION: The turning actuator (Ac) 24 is provided with an arm 24c turning around a vertical axis 24d by a voice coil motor 24e and an elastic member 24b connected to it. A head slider 24a supported on the tip of the member 24b is pressed on the magnetic disk 23 surface rotating by a spindle motor 22 by the member 24b, and is floated by an air flow flowing into the bottom surface. Then, a magnetic head 28 records/reproduces on/from the disk 23, and though an inside stopper 26 exists in a second position in the direction of P, it moves to a first position when not using. Accordingly, the Ac 24 runs onto a ramp 25 having a slope, and is fixed by the inside, an outside stoppers 26, 27. Thus, the damage in the attaching/detaching part and the disk due to the attaching/detaching of a cartridge of the attaching/detaching part of a main body 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.

The motor 5e of the rotary actuator 5 is provided with a voice coil 5f, and when a driving voltage is supplied to the voice coil 5f from the outside, the arm 5 is moved.
c is the magnetic field of the magnet 5g and this voice coil 5f
The vertical axis 5 based on the force generated by the current flowing in
It is rotated around d. As a result, the head slider 5a attached to the other end of the arm 5c is moved substantially in the radial direction of the magnetic disk 4, as indicated by the arrow R1 in FIG. 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.

Further, the housing 2 is provided with an inner stopper 2a and an outer stopper 2b for limiting the rotation of the rotary actuator 5. This inner stopper 2a
As a result, the inward rotation of the rotary actuator 5 is restricted. As a result, the rotary actuator 5 is prevented from coming into contact with the rotary shaft of the spindle motor 3 that rotates at high speed. The outer stopper 2b limits the outward rotation of the rotary actuator 5. As a result, the rotary actuator 5 is prevented from jumping out of the magnetic disk 4.

As a result, the rotary actuator 5 is
As shown in FIG. 7, the voice coil 5f has the inner stopper 2
It is possible to rotate the voice coil 5f over the range of the angle θ3 from the position where the voice coil 5f contacts the outer stopper 2b. Thus, in the rotary actuator 5, runaway during rotation is prevented by the two stoppers 2a and 2a.
It is prevented by b and the impact resistance is enhanced.

In the magnetic disk device 1 having such a structure, the spindle motor 3 is started up at the time of startup 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, for example, as shown in FIG. In FIG. 8, the magnetic disk device 7 is the same as that of the housing 2, the spindle motor 3, the magnetic disk 4, and the rotary actuator 5 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
Are 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 4 and held in the air.

When starting from this state, the spindle motor 3 first rises and reaches a predetermined number of revolutions, and then the rotary actuator 5 moves in the direction R4 in FIG. At this time, the rotary actuator 5 has the protrusion 9
Will rotate while sliding along the slope of the lamp 8. Then, the convex portion 9 separates from the ramp 8 and the head slider 5a is pressed against the surface of the magnetic disk 4 based on the elasticity of the elastic member 5b. However, between the head slider 5a and the surface of the magnetic disk 4. Due to the levitation force acting on the head slider 5a by the air flow, the head slider 5a floats without contacting the surface of the magnetic disk 4 (the above operation is called loading, and the head slider 5a causes the magnetic disk 4 to move). Floating on the surface of the) is called landing).

At the time of stop, 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). Then, the spindle motor 3 is stopped.

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.

Also in this case, as in the CSS type magnetic disk device 1 shown in FIG. 6, the housing 2 (in the case of the drawing,
The inner stopper 2a and the outer stopper 2b are provided on the magnet 5f). Therefore, as shown in FIG. 9, the rotary actuator 5 rotates from the position where the voice coil 5f contacts the inner stopper 2a to the position where the voice coil 5f contacts the outer stopper 2b over the range of the angle θ4. It will be possible to move. Thus, the rotary actuator 5 is prevented from running away at the time of rotation by the two stoppers 2a and 2b, and has improved shock resistance.

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. FIG.
0, the cartridge type magnetic disk device 10 is
Case 2, spindle motor 3, rotary actuator 5
The main body 11 in which the lamp 8 is incorporated, and the main body 1
1 and a cartridge 12 that is attachable to and detachable from the cartridge mounting portion 11a provided in the first embodiment.

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.

According to the cartridge type magnetic disk device 10 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 A in FIG. The magnetic disk 4 is mechanically chucked with respect to the spindle motor 3.

This chucking is performed as shown in FIGS. 11 and 12. That is, the center core 4a made of a ferromagnetic material attached to the center of the magnetic disk 4 moves toward the magnet 3a provided at the end of the rotary shaft of the spindle motor 3, as shown by the arrow in FIG. . As a result, the center core 4a is attracted by the magnet 3a, and the chucking of the magnetic disk 4 with respect to the spindle motor 3 is completed.

The magnetic disk 4 chucked by the spindle motor 3 in this way is
Is driven to rotate by the rotary actuator 5
Is rotated, 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 records and reproduces an information signal on 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. 13, the removable magnetic disk device 13 includes a housing 2, a spindle motor 3, a magnetic disk 4, and a rotary actuator 5.
The main body 14 in which the lamp 8 is incorporated, and the main body 1
4 includes a mounting portion 15 in which the mounting portion 15 is detachably inserted.

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

The mounting portion 15 is built in, for example, a personal computer or the like, or is configured as a single unit to be 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 main body 14 is inserted into the slot 15a of the mounting portion 15 as shown by an arrow B in FIG. 16 is connected to the connector 17 of the mounting portion 15. 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 magnetic disk device 13 are combined is also known.

Such a removable cartridge type magnetic disk device is constructed as shown in FIG. 14, for example. In FIG. 14, a removable cartridge type magnetic disk device 19 includes 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 is formed in the same manner as the main body 14 in FIG. 13, and the inside thereof is constructed in substantially the same manner as the magnetic disk device 10 shown in FIG. In this case, the connector 16 is provided with contacts for connecting the signal line and the power supply line along the upper edge).

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 is the mounting portion 15 in FIG.
It has the same configuration as. According to the cartridge type magnetic disk device 19 having such a configuration, the cartridge 12 is
As shown by an arrow D in FIG. 14, the main body 11 is inserted into the cartridge mounting portion 11a of the main body 11, and
As indicated by arrow E in FIG.
Insert into a. As a result, the connector 16 of the main body 11
Is connected to the connector 17 of the mounting portion 15.

[0032]

However, in any of the magnetic disk devices 10, 13 and 19 configured as described above, means for restraining and fixing the rotary actuator 5 at the stop position in any case. Is not provided. 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. Further, the rotary actuator may be erroneously loaded when the cartridge is not mounted or the cartridge is not mounted correctly.

Thus, in such a case, the tip 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, the damaged magnetic disk device is damaged. Body 1
When 1 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 eliminates the damage to the detachable portion and the disk due to the detachment of the detachable portion such as the cartridge or the main body by fixing the rotary actuator at the stop position with a simple structure. It is an object of the present invention to provide an inner stopper and a disk device which are made to be made.

[0035]

According to the present invention, the above object is to provide a magnetic head which is swingably supported with respect to a disk which is a rotationally driven recording medium and which records and reproduces the disk on the tip side. This is achieved by an inner stopper provided for limiting the rotation of the rotation type actuator provided therein, the inner stopper of the disk device being movable.

Further, according to the present invention, the above object is to provide a disk as a recording medium, a drive means for rotating the disk, and a swingable support for the disk rotationally driven by the drive means. A dynamic actuator, a magnetic head for recording / reproducing a disk provided on the tip side of the rotary actuator, and a magnetic head provided outside the disk,
The inner stopper is provided with a ramp having a slope where the rotary actuator rides up at a stop position when not in use, and an inner stopper and an outer stopper fixedly arranged so as to limit the rotation of the rotary actuator. Is a first position for restraining the rotary actuator to a stop position when not in use, and a second position for releasing the restraint of the rotary actuator and restricting the rotation to the inner side of the disc when in use. This is accomplished by a disk drive configured to move between.

In the disk device, the inner stopper is preferably moved in association with the chucking mechanism.

[0038]

According to the above construction, since the inner stopper is movable, it acts as a fixing means for restraining the rotary actuator to the stop position at the first position when not in use, and at the time of use, for example. , In the second position, the constraint of the rotary actuator is released to limit the rotation of the rotary actuator to the inside of the disk to prevent the spindle motor from coming into contact with the rotary shaft. Acts as a stopper.

When the inner stopper is moved in conjunction with the chucking mechanism, the inner stopper moves from the first position to the second position only when the disc is chucked correctly. The rotary actuator will load. Therefore, when the cartridge is not installed or is not installed correctly, or when the disc is not chucked correctly, the inner stopper does not move and the constraint of the rotary actuator by the inner stopper is not released. The dynamic actuator is prevented from loading.

[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 a first embodiment of a magnetic disk device according to the present invention. In FIG. 1, a magnetic disk device 20 includes a housing 21, a spindle motor 22, a magnetic disk 23 rotatably driven by the spindle motor 22, and a rotary actuator 24.
And a lamp 25 and an inner stopper 26 and an outer stopper 27.

The housing 21 is formed substantially flat, for example, from an aluminum alloy, and the spindle motor 22 is arranged on the flat surface thereof. The spindle motor 22 is configured as, for example, a flat brushless motor, and is driven and controlled so that the angular velocity is constant, so that the magnetic disk 23 is rotated.

Further, the rotary actuator 24 includes a flying head slider 24a and the head slider 2
4a for supporting the elastic member 4a, and this elastic member 24b
An arm 24c for supporting the arm 24c, a vertical shaft 24d for rotatably supporting one end of the arm 24c, and a motor 24e for rotating the arm 24c around the vertical shaft 24d.

The head slider 24a is pressed against the surface of the rotating magnetic disk 23 by the elastic member 24b, so that the air flow between the lower surface of the head slider 24a and the surface of the magnetic disk 23 causes a magnetic field. It floats above the surface of the disk 23 at a slight distance. The elastic member 24b acts as a spring based on its elasticity,
The head slider 24a is pressed against the surface of the magnetic disk 23 with a predetermined load.

The arm 24c is made of a rigid material, and is rotated about the vertical axis 24d to move the head slider 24a in the radial direction R1 of the magnetic disk 23 to perform a seek operation. As a result, the magnetic head 28 attached to the head slider 24a can access a predetermined track on the magnetic disk 23.

The motor 24e is composed of a voice coil 24f attached to the other end of the arm 24c and a magnet (not shown) fixedly arranged on the housing 21. The polarity of the winding of the voice coil 24f and the magnet is
The voice coil 24f is arranged so that the arm 24c is rotated around the vertical axis 24d by supplying a driving voltage from the outside.

Therefore, when a driving voltage is externally supplied to the voice coil 24f, the arm 24c rotates around the vertical axis 24d based on the force generated by the magnetic field of the magnet and the current flowing through the voice coil 24f. Be moved. As a result, the head slider 24a attached to the other end of the arm 24c is moved substantially in the radial direction of the magnetic disk 23, as shown by the arrow R1 in FIG. Thus, the magnetic head 28 provided on the slider 24a makes a seek operation with respect to the magnetic disk 23. As a result, the magnetic head 28 records / reproduces information on / from a predetermined track on the magnetic disk 23.

The lamp 25 is fixedly arranged with respect to the housing 21, and when the rotary actuator 24 is rotated,
Along the trajectory of the downwardly projecting convex portion 29 provided at the tip of the rotary actuator 24, it is inclined like a slide,
In the case of the drawing, the right edge is low and the left edge is high.

The hemispherical convex portion 29 is provided integrally with the arm 24c of the rotary actuator 24. For example, the convex portion 29 is fixedly held to an extension portion (not shown) of the arm 24c.

The inner stopper 26 is provided on the housing 21, is formed in a substantially cylindrical shape, and is shown in FIG. 1 from the first position shown in FIG. 1 to the second position shown in FIG. As indicated by an arrow P, it is movably supported. In this case, as the moving means of the inner stopper 26, for example, an electromagnetic actuator such as a plunger, diverting the driving force of the rotary actuator 24 or the spindle motor 22, or a mechanical means such as a manual lever is used. ,
Any moving means can be used as long as the inner stopper 26 moves between the first position and the second position. Then, as shown in FIG. 1, when the inner stopper 26 is in the first position, the inner stopper 26 comes into contact with the side edge of the voice coil 24f of the rotary actuator 24, so that the rotary actuator 24 is locked in the rest position of FIG.

On the other hand, as shown in FIG. 2, when the inner stopper 26 is in the second position, the rotary actuator 24 is arranged so that the head slider 24a at the tip of the rotary actuator 24 faces the center of the magnetic disk 23. , The voice coil 24f of the rotary actuator 24 when rotating inward
When the outer edge of the rotary actuator abuts on the inner stopper 26, the rotation of the rotary actuator 24 inward is restricted.
This prevents the rotary actuator 24 from coming into contact with the rotary shaft of the spindle motor 22 that rotates at high speed. Therefore, the rotary actuator 24 can rotate within the range of the angle θ1.

The disk device 20 according to this embodiment is configured as described above and operates as follows. When not in use, the inner stopper 26 is at the first position shown in FIG. 1, and the rotary actuator 24 is at the stop position shown in FIG. A part 29 rests on the left surface of the lamp 25. As a result, the head slider 24a of the rotary actuator 24 is separated from the surface of the magnetic disk 23 and held in the air. In this case, the rotary actuator 24 is fixed and held by the voice coil 24f being sandwiched by the inner stopper 26 and the outer stopper 27, and is restrained at the stop position. As a result, the rotary actuator 24 does not jump out of the stop position when a strong impact or the like is applied. Therefore, due to impact or the like, the rotary actuator 2
The head slider 24a, the elastic member 24b, the magnetic head 28, and the magnetic disk 23 of No. 4 are not damaged.

When starting from this state, the inner stopper 26 is first moved to the second position shown in FIG. 2 to release the restraint of the rotary actuator 24 and the spindle motor 3 rises. After reaching the predetermined number of rotations, the rotary actuator 24 rotates inward. At this time, the rotary actuator 24 has the protrusion 2
9 rotates while sliding along the slope of the ramp 25. Then, the convex portion 29 separates from the ramp 25, and the head slider 24a is pressed against the surface of the magnetic disk 23 based on the elasticity of the elastic member 24b.
The air flow between the head slider 24a and the surface of the magnetic disk 23 causes a levitation force to act on the head slider 24a, so that the head slider 24a floats without contacting the surface of the magnetic disk 23. As a result, the magnetic head 28 provided in the head slider 24a performs a seek operation with respect to the magnetic disk 23. As a result, the magnetic head 28 records / reproduces information on / from a predetermined track on the magnetic disk 23. In this case, when the rotary actuator 24 rotates inward, the outer edge of the voice coil 24f of the rotary actuator 24 abuts the inner stopper 26 located at the second position, so that the rotary actuator 24 The inward rotation of the is restricted. Thereby, the rotary actuator 24
Is prevented from coming into contact with the rotating shaft of the spindle motor 22 that rotates at high speed.

When stopped, the rotary actuator 24 rotates toward the stop position shown in FIG. At this time, the convex portion 29 of the rotary actuator 24 is fixed to the lamp 25.
The head slider 24a is separated from the surface of the magnetic disk 23 by being lifted up on the slope and sliding along the slope. Then, when the rotary actuator 24 reaches the stop position, the convex portion 29 moves to the higher side of the slope of the ramp 25, so that the head slider 24a moves.
The magnetic disk 23 is separated from the surface and is held in the air. Then, the spindle motor 22 is stopped.

When an emergency occurs in the magnetic disk device 20 and it is necessary to quickly retract the rotary actuator 24 to the stop position, the inner stopper 26 moves to the first position in FIG. As a result, the rotary actuator 24 is forcibly moved to the stop position and unloaded.

As described above, in the magnetic disk device 20 of this embodiment, the inner stopper 26 has an arm lock function at the stop position of the rotary actuator 24 and a forced unload function in an emergency. However, a configuration having only one of the functions is also possible.

3 to 5 show a second embodiment of the magnetic disk device according to the present invention, and in this case, it is constructed as a cartridge type magnetic disk device.

In FIG. 3, the cartridge type magnetic disk device 30 is schematically shown for easy understanding, and includes a housing 31, a spindle motor 32, and a magnetic disk 3 which is rotationally driven by the spindle motor 32.
3, a rotary actuator 34, a ramp 35, an inner stopper 36 and an outer stopper 37, a lever 38 that supports the inner stopper 36, and a cam 39 that moves the lever 38.

In this embodiment, the rotary actuator 34 is used.
Is a flying head slider 34a, an elastic member 34b that supports the head slider 34a, an arm 34c that supports the elastic member 34b, and a vertical shaft 34d that rotatably supports one end of the arm 34c. Arm 34
a motor 34e for rotating c about a vertical axis 34d.

Further, in this embodiment, the inner stopper 36
Is provided on the lever 38 and is formed in a substantially cylindrical shape, and from the first position shown in FIG. 3 to the second position shown in FIG. 4 as shown by an arrow Q in FIG. , Is movably supported on the lever 38.

The lever 38 is slidably supported in the left-right direction in FIG. 3 with respect to the housing 31, and a spring 42 imparts a leftward movement habit as shown by an arrow in FIG. ing. Further, the lever 38 is provided with a cutout portion 38a, and the end edge 38 of the cutout portion 38a facing leftward.
b is a stopper pin 43 fixedly arranged in the housing 31.
The leftward movement is restricted by abutting against.

The cam 39 is supported by the housing 31 so as to be slidable in the left-right direction in FIG.
An engaging portion 39a that engages with the notch portion 38a is provided.
Further, the cam 39 is provided with a slot 39b that engages with a pin 32a provided on the side surface of the spindle motor 32. When the cam 39 moves to the left as shown in FIG. 3, the slot 39b pushes down the pin 32a of the spindle motor 32 to hold the spindle motor 32 at a relatively low position hu, and a portion 39b-1. The cam 39 is shown in FIG.
When moving to the right as shown in, spindle motor 3
A portion 39b that pushes up the second pin 32a to hold the spindle motor 32 at a relatively high chucking position hc.
-2 and a portion 39b-3 that obliquely connects these two portions 39b-1 and 39b-2 with each other.

The magnetic disk drive 30 according to this embodiment is
It is configured as described above and operates as follows.
First, when the magnetic disk 33 is not chucked with respect to the spindle motor 32, the cam 39 has moved to the left as shown in FIG. 1, so the pin 32a of the spindle motor 32 is The lever 38 is at a relatively low position hu, and the lever 38 is pulled to the left by the spring 41, and the end edge 38b of the cutout portion 38a is in contact with the stopper pin 42. Therefore, the inner stopper 36 is in the first position shown in FIG. For this reason, the rotary actuator 34 is retracted to the outside of the magnetic disk 33 at the stop position shown in FIG. 1, and the convex portion 43 is mounted on the left surface of the ramp 35. As a result, the head slider 34a of the rotary actuator 34 is separated from the surface of the magnetic disk 33 and held in the air. In this case, the rotary actuator 34 is constrained to the stop position by the inner stopper 36 and the outer stopper 37. As a result, the rotary actuator 34 does not jump out of the stop position when a strong impact or the like is applied. Therefore, due to impact or the like, the head slider 34 of the rotary actuator 34
A, the elastic member 34b, the magnetic head 38, and the magnetic disk 33 are not damaged.

From this state, when the magnetic disk 33 is chucked with respect to the spindle motor 32,
First, the cam 39 is moved to the right. Then, when the cam 39 moves by the distance L1 in FIG. 1, the pin 32a of the spindle motor 32 relatively slides along the oblique portion 39b-3 of the slot 39b of the cam 39.
Move to a relatively high position hc. Therefore, the spindle motor 32 comes into contact with the magnetic disk 33, and the magnet 32b provided at the end of the rotating shaft of the spindle motor 32 causes the magnetic disk 3
Chucking is performed by adsorbing the center core 33 a made of a ferromagnetic material attached to the center of 3. At this time, the engaging portion 39a of the cam 39 moves within the cutout portion 38a of the lever 38 to move the cutout portion 38a.
The lever 38 is not moved, only reaching the end edge 38b of the.

Then, as the cam 39 moves by the distance L2, the engaging portion 39a of the cam 39 pushes the end edge 38b of the cutout portion 38a of the lever 38 to the right against the tension of the spring 41. Move. As a result, the inner stopper 36 supported by the lever 38 moves rightward and moves to the second position shown in FIG. Therefore, the rotation type actuator 34 is released from the constraint and the spindle motor 32 is
Rises and reaches a predetermined number of rotations, the rotary actuator 34 rotates inward. At this time, the rotary actuator 34 rotates while the convex portion 43 slides along the slope of the ramp 35. Then, the convex portion 43 separates from the ramp 35, and the head slider 34a is pressed against the surface of the magnetic disk 33 based on the elasticity of the elastic member 34b.
The levitation force acts on the head slider 34a by the air flow between the head slider 34a and the surface of the magnetic disk 33, so that the head slider 34a floats without contacting the surface of the magnetic disk 33.

As a result, the magnetic head 38 provided on the head slider 34a operates to seek the magnetic disk 33. As a result, the magnetic head 38 records / reproduces information on / from a predetermined track on the magnetic disk 33.

When stopped, the cam 39 moves to the left as shown in FIG. 5, so that the lever 38 moves to the left based on the tension of the spring 41. As a result, the inner stopper 36 moves from the second position toward the first position. Accordingly, the rotary actuator 34 is
The arm 34c is rotated outward by the inner stopper 36 to the stop position shown in FIG. At this time, the convex portion 43 of the rotary actuator 34 is raised on the slope of the ramp 35 and slides along the slope,
The head slider 34a separates from the surface of the magnetic disk 33. When the rotary actuator 34 reaches the stop position, the convex portion 43 moves to the higher side of the slope of the ramp 35, so that the head slider 34a is separated from the surface of the magnetic disk 33 and is held in the air. It Then, the cam 39 moves leftward from the position of FIG. 5 to the position of FIG.
, But slides along the slot 39b of the cam 39, the spindle motor 32 moves downward, and the chucking is released. Then, the spindle motor 32 is stopped.

As described above, in the magnetic disk device 30 of this embodiment, the inner stopper 36 has an arm lock function at the stop position of the rotary actuator 34 and a forced unload function at the time of stop. However, a configuration having only one of the functions is also possible. Further, in this embodiment, the inner stopper 26 is configured to be moved from the first position to the second position by the lever 38 interlocking with the cam 39 for chucking, but the invention is not limited to this. As long as the inner stopper 26 moves between the first position and the second position in association with chucking, for example, an electromagnetic actuator such as a plunger, a rotary actuator 24, or a spindle motor 22 is driven. Any moving means may be used, such as diversion of force or mechanical means such as a manual lever.

In the above embodiment, the arm stoppers of the rotary actuators 24, 34 are locked by the inner stoppers 26, 36 at the first position, and the inner stopper 26 moving from the second position to the first position. , 36, the procedure of forced unloading is described, but these timings are not limited to the timings described in the embodiment.

Further, the above embodiment shows the case where the present invention is applied to the conventional magnetic disk devices 1 and 10 shown in FIGS. 8 and 10, but the present invention is not limited to this, and for example, FIG.
It is obvious that the present invention can be applied to the removable magnetic disk device 13 and the removable cartridge magnetic disk device 19 of FIG.

Further, 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.

[0072]

As described above, according to the present invention, by fixing the rotary actuator to the stop position with a simple structure, the detachable portion and the disk accompanying the detachment and attachment of the detachable portion such as the cartridge or the main body. A very good inner stopper and disk device is provided in which damage to the disk is eliminated.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a first embodiment of a magnetic disk device according to the present invention when not in use.

FIG. 2 is a schematic plan view showing when the magnetic disk device of FIG. 1 is used.

FIG. 3 is a schematic plan view showing a non-chucking state of the second embodiment of the magnetic disk device according to the present invention.

FIG. 4 is a schematic plan view showing a state of chucking in the magnetic disk device of FIG.

5 is a schematic plan view showing when chucking is released in the magnetic disk device of FIG.

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

7 is a schematic plan view showing a movable range of a rotary actuator in the magnetic disk device of FIG.

FIG. 8 is a schematic plan view showing an example of a conventional dynamic load-unload type magnetic disk device.

9 is a schematic plan view showing a movable range of a rotary actuator in the magnetic disk device of FIG.

10 is a schematic sectional view showing a chucking mechanism in the magnetic disk device of FIG. 8 when not chucked.

11 is a schematic sectional view showing a chucking mechanism at the time of chucking in the magnetic disk device of FIG.

FIG. 12 is a schematic plan view showing an example of a conventional cartridge-type magnetic disk device.

FIG. 13 is a schematic plan view showing an example of a conventional removable magnetic disk device.

FIG. 14 is a schematic plan view showing an example of a conventional removable cartridge type magnetic disk device.

[Explanation of symbols]

 20 Magnetic Disk Device 21 Housing 22 Spindle Motor 23 Magnetic Disk 24 Rotating Actuator 24a Head Slider 24b Elastic Member 24c Arm 24d Vertical Axis 24e Voice Coil Motor 24f Voice Coil 25 Lamp 26 Inner Stopper 27 Outer Stopper 28 Magnetic Head 29 Convex Part 30 cartridge type magnetic disk device 31 housing 32 spindle motor 32a pin 33 magnetic disk 34 rotary actuator 34a head slider 34b elastic member 34c arm 34d vertical axis 34e voice coil motor 34f voice coil 35 lamp 36 inner stopper 37 outer stopper 38 lever 38a Cutout 38b End edge 39 Cam 39a Engaging portion 39b Slot 40 Magnetic head 41 Spring 42 Stopper pin 4 Convex portion

Claims (5)

[Claims] 1. To limit the rotation of a rotary actuator having a magnetic head, which is swingably supported with respect to a disk which is a rotationally driven recording medium and which records and reproduces the disk on the tip side. An inner stopper for a disk device, wherein the inner stopper is provided so as to be movable. 2. The inner stopper restrains the rotary actuator to a stop position when not in use, and releases the restraint of the rotary actuator and restricts rotation of the rotary actuator inside the disk when not in use. The inner stopper according to claim 1, wherein the inner stopper is configured to move between the second position and the second position. 3. A disk as a recording medium, a drive means for rotationally driving the disk, a rotary actuator swingably supported with respect to the disk rotationally driven by the drive means, and a rotary actuator. A magnetic head for recording / reproducing a disk provided on the tip side, a ramp provided on the outer side of the disk and having a slope on which the rotary actuator rides at a stop position when not in use, and the rotation of the rotary actuator. An inner stopper and an outer stopper fixedly arranged so as to limit the rotation of the rotary actuator when not in use, and the inner stopper and the outer stopper when not in use. The structure is such that the constraint of the dynamic actuator is released and the movable actuator moves between a second position that limits the inward rotation of the disk. Disk device characterized by. 4. A cartridge which is detachable from the main body, a disk which is a recording medium accommodated in the cartridge, a drive means which rotationally drives the disk inside the cartridge which is attached to the main body, and a drive means which drives the disk. A chucking mechanism that is fixed to the rotary actuator, a rotary actuator that is swingably supported with respect to the disk that is rotationally driven by the drive means, and a magnetic disk that is provided at the tip of the rotary actuator and that records and reproduces the disk. The head includes an inner stopper and an outer stopper that are fixedly arranged so as to limit the rotation of the rotary actuator. The inner stopper restrains the rotary actuator at a stop position when not in use. At the first position and in use, the constraint of the rotary actuator is released and the rotation inside the disc is restricted. Disk device is characterized in that a structure to move between a second position. 5. The disk device according to claim 3, wherein the inner stopper is moved in association with a chucking mechanism.