JP3087613B2 - Disk unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive, and more particularly, to a disk drive configured to mount a disk cartridge together with a holder at a predetermined mounting position by inserting the disk cartridge into the holder.

[0002]

2. Description of the Related Art For example, in a magnetic disk drive for performing magnetic recording and reproduction by mounting a disk cartridge containing a flexible magnetic disk, the thickness and size of the device have been reduced. The spacing between the members has also become smaller, and more precise processing is required.

However, as the thickness of the magnetic disk drive is reduced, the gap between the height of the disk cartridge inserted into the holder and the height of the lower magnetic head of the head carriage is reduced. Therefore, when the disk cartridge is warped so as to protrude downward, the front end of the disk cartridge inserted into the holder may abut on the lower magnetic head.

In order to prevent the front end of the disk cartridge from contacting the lower magnetic head when the disk cartridge is inserted into the holder, for example, the applicant of the present invention disclosed in Japanese Patent Laid-Open No. 4-167264. A configuration having an abutment prevention mechanism is proposed.

The structure of the disk cartridge contact prevention mechanism is such that when the disk cartridge is inserted into the holder and the disk cartridge is inserted into the holder, the disk cartridge rides on the projection on the upper surface of the chassis and the end of the disk cartridge is lowered. It comprises a contact preventing member that slides to a contact preventing position that regulates the insertion position of the disk cartridge so as not to contact the side magnetic head, and a rotating lever having one end connected to the contact preventing member. The other end of the rotating lever is connected to a slider (sliding member) having an eject button.

When the disc cartridge is inserted into the holder, the guide pins provided on both sides of the holder are engaged with the guide grooves provided on both sides of the slider. The user inserts the inserted disk cartridge by descending from the insertion / ejection position to the disk mounting position. further,
The slider slides and the rotating lever is rotated. The pivot lever pivots as the slider slides to slide the contact prevention member to the contact prevention position, or to the regulation release position separated from the mounted disk cartridge. It is provided as follows.

[0007]

[0008]

[0009]

However, in the above disk device, since the sliding operation of the slider is transmitted to the contact preventing member via the rotating lever, the contact preventing member is prevented from contacting. A space for sliding to the position or the restriction release position is required, and an installation space for a mechanism for sliding the contact prevention member on the upper surface of the chassis between the slider and the head carriage to the contact prevention position or the restriction release position. However, there is a problem that it is not possible to cope with space saving and downsizing of the device.

[0010]

[0011]

[0012]

[0013]

[0014]

Accordingly, an object of the present invention is to provide a disk device which solves the above problem.

[0016]

According to the first aspect of the present invention,
A holder that moves to a predetermined mounting position upon insertion of the disk cartridge and moves from the mounting position to the cartridge insertion / ejection position by an eject operation, and an end of the disk cartridge when the disk cartridge is inserted into the holder. And a contact preventing member that regulates the insertion position of the disk cartridge so that the holder does not contact the magnetic head, the contact preventing member moves the holder to a mounting position or a cartridge insertion / ejection position. In this process, the disk cartridge is directly pressed by the holder and is displaced to a contact prevention position for restricting the insertion position of the disk cartridge or a restriction release position for releasing the restriction on the disk cartridge.

[0017]

[0018]

According to the first aspect of the present invention, the contact preventing member is pressed directly by the holder during the movement of the holder to the mounting position or the cartridge insertion / ejection position, thereby restricting the insertion position of the disk cartridge. It can be displaced to the prevention position or the restriction release position for releasing the restriction on the disk cartridge. Therefore, the mechanism for displacing the contact preventing member can be simplified as compared with the conventional configuration in which the operation of the sliding member is transmitted to the contact preventing member and the contact preventing member is displaced. The space can be reduced by displacing the prevention member to save space.

[0019]

[0020]

1 to 3 show an embodiment of a disk drive according to the present invention. 1 is a perspective view showing the disk device 1, FIG. 2 is an exploded perspective view showing a schematic configuration of the disk device 1, and FIG. 3 is a perspective view showing a state where a holder 2 and a slider (sliding member) 3 are combined. is there.

The disk device 1 includes a holder 2 on which a disk cartridge (not shown) is inserted on a chassis 4,
The slider 3 that slides in the front-rear direction to move the holder 2 up and down is mounted in a combined state. On the flat surface 4a of the chassis 4, a turntable 5 driven by a disk rotation motor and a head carriage 8 supporting the magnetic heads 6, 7 are provided.

The head carriage 8 includes a carriage main body 9 supporting the lower magnetic head 6 on the upper end of the head, a head arm 10 supporting the upper magnetic head 7 on the lower end of the tip and rotatably mounted on the carriage main body 9. Having. The head carriage 8 is attached so as to be slidable in the front-rear direction (A and B directions) in a direction extending in the left-right direction.

The head carriage 8 is provided so as to engage with a lead screw 11 extending in the front-rear direction. One end of the lead screw 11 is supported by a bearing 12 on the chassis 4, and the other end of the lead screw 11 is connected to a spindle shaft of a stepping motor 13 mounted on the rear side of the chassis 4. In this embodiment, since the head carriage 8 is provided so as to extend in the left-right direction orthogonal to the disk cartridge insertion / ejection directions (A and B directions), the depth dimension of the disk device 1 is small.

Further, since the lead screw 11 and the stepping motor 13 for driving the head carriage 8 are provided on the left side of the chassis 4, the width of the disk device 1 is increased accordingly. When the lead screw 11 is rotated by a predetermined angle by the stepping motor 13, the head carriage 8 is driven in the directions A and B by a distance corresponding to the rotation angle to slide the magnetic heads 6, 7 to a desired track. Magnetic recording / reproduction can be performed by contact.

Further, on the flat surface 4a of the chassis 4 located at the rear part of the turntable 5, when the disk cartridge is inserted into the holder 2, the lower magnetic head 6 provided on the tip of the carriage body 9 A protector (contact prevention member) 14 for preventing collision is provided.

A control circuit 1 is provided on the lower surface of the chassis 4.
5 is mounted. This substrate 1
On the disk 6, the magnetic heads 6, 7 in addition to the control circuit 15 for controlling the disk drive 1, the outermost track "0" of the disk.
Track position detecting sensor 17 for detecting that it is in a position where it slides on "0", and a connecting portion 1 provided at the tips of flexible wiring boards 18 and 19 connected to magnetic heads 6 and 7.
A connector 20 into which 8a and 19a are inserted and connected is provided.

The board 16 is provided on the flat surface 4a of the chassis 4.
Through holes 4c to 4e each having a shape corresponding to the contour shape of each component are provided so that the control circuit 15, the track position detection sensor 17, and the connector 20 provided thereon are inserted. Then, the substrate 16 is fixed to the lower surface side of the chassis 4 by inserting screws from below into the mounting holes 16a. After the board is mounted, the control circuit 15 is inserted into the through-hole 4c, and the track position detection sensor 17 and the connector 20 are inserted through the through-holes 4d and 4e to protrude above the plane 4a of the chassis 4. Become.

A front bezel 22 having a disk insertion slot 21 is attached to a front end of the chassis 4. A flap 23 for closing the disc insertion opening 21 from the inside is provided on the back side of the front bezel 22 so as to be rotatable in the opening and closing direction. Next, the configuration of each main part configured as described above will be individually described. First, the holder 2 and the slider 3 will be described, and then the head carriage 8 will be described.

FIG. 4 shows the structure of the holder 2. Holder 2
Are a top plate 2a and a cartridge holder 2 bent to hold a disk cartridge from both sides of the top plate 2a.
b, 2c. Therefore, a space surrounded by the top plate 2a and the cartridge holding portions 2b and 2c on both sides is a cartridge insertion portion.

The top plate 2a of the holder 2 has A, B contact portions 2a ₁ which contact the lower surface 10a of the head arm 10.
It is formed to extend in the direction. This contact part 2a
₁ has a triangular cross-sectional shape, and is provided so that the apex portion thereof contacts the lower surface 10a of the head arm 10 during the eject operation to rotate the head arm 10 upward.

An opening 2d is provided in the top plate 2a of the holder 2 so as to allow the movement of the head carriage 8, and an opening 2e is also provided in the left side surface. A pair of guide pins 2f which are engaged with and guided by the slider 3 are provided on the side surfaces 2b ₁ and 2c ₁ of the cartridge holding portions 2b and 2c.
Is protruding.

[0032] On the left side of the holder 2, since the opening 2e is provided, the side surface 2b ₁ of the left is shorter than the right side surface 2c _1. Therefore, in the right side 2c _1, although the gap between the pair of guide pins 2f is a normal size, in the side surface 2b ₁ of the left, the distance between the pair of guide pins 2f is narrower.

Further, at the rear of the top plate 2a of the holder 2,
A latch lever 24 is rotatably supported by a shaft 25. The latch lever 24 is urged to rotate counterclockwise by a spring member (not shown), and has rotated to the position shown by the broken line in FIG. 3 before the cartridge is inserted. After the cartridge is inserted, the latch lever 24 is rotated to the position shown by the solid line in FIG.

The latch lever 24 is inserted through a locking cam 24a for locking the slider 3 and a fan-shaped hole 2g formed in the top plate 2a and extends into the holder 2, and the disk cartridge is inserted. And a shutter opening / closing section 24b for pressing a shutter (not shown) for closing the head sliding contact opening of the disk cartridge in the opening direction.

FIG. 5 shows the structure of the slider 3. The slider 3 is slidably mounted on the holder 2 and has a top plate 3a facing the top plate 2a of the holder 2, side plates 3b and 3c bent on both sides of the top plate 3a, and side plates 3b and 3b. 3c, which slides on the side walls 4e and 4f on both sides of the chassis 4 to guide the sliding direction. Sliding part 3e
Are protrusions 4b provided on the side walls 4e and 4f of the chassis 4.
And an engagement hole 3e1 whose sliding range is regulated by engaging with the _first hole. In order to allow the head carriage 8 provided on the left side to move on the top plate 3a of the slider 3,
An escape portion 3f is provided so that a portion of the holder 2 facing the openings 2d and 2e has a shape removed.

Further, the slider 3 has a projecting piece 3g projecting to the front right side, and the eject button 2 is attached to the projecting piece 3g.
6 is fixed. And, at the rear end of the top plate 3a,
The locking portion 3h locked by the locking cam 24a of the latch lever 24 is bent downward.

Outside the side plate 3b provided on the left side of the slider 3, there is provided a sliding portion 3e which slides on the outside of the side wall 4e of the chassis 4 to guide the sliding direction.
The side plate 3b is provided so as to slide inside the side wall 4e of the chassis 4. Therefore, the side wall 4e of the chassis 4 is attached so as to fit into a gap formed between the side plate 3b and the sliding portion 3e.

A pair of cut-and-raised portions (plate portions) 3i are provided inside the side plate 3b, and the cut-and-raised portions 3i extend in parallel with the side plate 3b and the sliding portion 3e. Is provided. Guide groove 3d which guides pins 2f provided on the side face 2b ₁ of the left holder 2 is engaged is provided in the cut-and-raised portion 3i. in this way,
Since the cut-and-raised portion 3i and the sliding portion 3e are provided in parallel, the escape portion 3f that enables the head carriage 8 to move.
, And a pair of guide grooves 3d can be provided even though there is only a narrow space.

The structure in which the sliding portion 3e is provided outside the cut-and-raised portion 3i as described above is because the lead screw 11 and the stepping motor 13 are
This is because the width of the disk device 1 is correspondingly increased and the side wall 4e of the chassis 4 is provided at a position shifted leftward.

Further, the side plate 3c provided on the right side of the slider 3, and the sliding portion 3e, a pair of guide grooves 3d which a pair of guide pins 2f provided on the side surface 2c ₁ of the holder 2 is engaged Is provided. Since the guide groove 3d is inclined, the slider 3 slides in the front-rear direction (A and B directions), the guide pin 2f moves in the guide groove 3d, and the holder 2 moves up and down. The side plate 3c provided on the right side of the slider 3 is provided so as to slide inside the side wall 4f of the chassis 4, and the sliding portion 3e provided so as to be located outside the side plate 3c is a chassis. 4 is provided so as to slide on the outside of the side wall 4f.

FIGS. 6 and 7 are a plan view and a side view showing the holder 2 and the slider 3 when the disc cartridge is inserted and ejected, respectively. FIGS. 8 and 9 show the holder 2 when the disc cartridge is mounted. FIG. 3 is a plan view and a side view showing the slider 3. The holder 2 and the slider 3
As shown in FIGS. 6 and 7, a state in which the guide pin 2f of the holder 2 is fitted into the guide groove 3d of the slider 3 in a state where the top plate 3a of the slider 3 is overlaid on the upper surface of the top plate 2a of the holder 2. Installed with. When the disk cartridge is inserted into the holder 2, the above-described latch lever 24 is pressed by the disk cartridge and rotates clockwise.

As a result, the shutter of the disk cartridge is pressed in the opening direction by the shutter opening / closing portion 24b of the latch lever 24, and the latching of the slider 3 by the latching portion 3h by the latch lever 24 is released. Therefore, the slider 3 slides in the B direction by the spring force.

As the slider 3 slides in the B direction,
As shown in FIG. 8 and FIG.
f moves downward along the guide groove 3d of the slider 3,
The holder 2 descends to the mounting position. The slider 3 has a projection 4 b having engagement holes 3 e ₁ on both sides projecting from both sides of the chassis 4.
, So that only the sliding operation can be performed in the A and B directions without going up and down.

When the eject button 26 is pressed after the disk cartridge is mounted by the lowering operation of the holder 2, the slider 3 slides in the direction A. The disk cartridge rises to the disk cartridge insertion / ejection position shown in FIG. Then, the rotation restriction by the locking portion 3h of the slider 3 with respect to the latch lever 24 is released, and the latch lever 24 rotates counterclockwise. Therefore, the disk cartridge in the holder 2 is ejected by being pressed by the shutter opening / closing portion 24b of the latch lever 24.

FIG. 10 is a front view showing a state where the holder 2 and the slider 3 are attached to the chassis 4. The left side wall 4e of the chassis 4 is fitted between the side plate 3b of the slider 3 and the sliding portion 3e, and the right side wall 4f of the chassis 4 is
The slider 3 is assembled so as to be fitted between the side plate 3c and the sliding portion 3e. Also, the side walls 4e and 4 of the chassis 4
f, a groove (not shown) for guiding the holder 2 in the vertical direction is provided, and pins protruding from both sides of the holder 2 together with the sliding operation of the slider 3
Guided along grooves formed in the inner walls of e and 4f.

When the slider 3 slides in the front-rear direction (A and B directions) by the insertion / ejection operation of the disk cartridge, the sliding portions 3e on both sides slide outside the side walls 4e and 4f of the chassis 4. To guide the sliding direction of the slider 3. Therefore, the slider 3 can stably slide in the extending direction of the side walls 4e and 4f of the chassis 4.

Further, since a pair of guide grooves 3d are provided on both sides of the slider 3, respectively, the slider 3 slides as described above, and the four guides provided on both sides of the holder 2 are provided. The pin 2f moves up and down along the guide groove 3d. The holder 2 can move up and down smoothly in a stable state without rattling by moving two guide pins 2 f provided on both sides along the guide groove 3 d of the slider 3. Insertion / ejection operations can be performed reliably.

Next, the head carriage 8 will be described with reference to FIGS. FIG. 11 is a side view of the head carriage 8, FIG. 12 is a plan view of the head carriage 8, and FIG. 13 is a rear view of the head carriage 8. FIG. 14 is a diagram for explaining the carriage body 9.

The head carriage 8 includes a carriage main body 9 in which a synthetic resin and a sheet metal are integrally formed, and a head arm 1 provided on the carriage main body 9 so as to be vertically rotatable.
0. As shown in FIG. 14, the carriage main body 9 is provided with a gimbal mounting portion 9a for supporting the magnetic head 6 at a distal end portion, and a lead screw 11 at a proximal end portion.
Is provided with a lead screw supporting portion 9b for supporting the lead screw.

A guide shaft 27 penetrates at an intermediate position on both sides of the carriage body 9, and a through hole 9c which slides along the guide shaft 27 when the head is moved and is guided in the A and B directions is provided. Have been. Reference numeral 30 denotes a detection piece for detecting the track position, which protrudes from the side surface of the carriage body 9 in the moving directions A and B, and extends in a direction parallel to the plane of the substrate 16. Also, the detection piece 30
Indicates that the magnetic heads 6 and 7 have the outermost track "0
When it is at the position where it slides on "0", it reaches the mounting position of the track position detection sensor 17. Therefore, the track position detection sensor 17 outputs the outermost track “00” detection signal when detecting the detection piece 30.

Reference numeral 31 denotes a support for supporting the head arm 10, which protrudes above the lead screw support 9b. Reference numeral 32 denotes a leaf spring, one end of which is fixed on the support portion 31 by a screw 33, and the other end of which is connected to the lower surface of the head arm 10. The head arm 10 can rotate so that the magnetic head 7 provided at the tip moves up and down when the leaf spring 32 bends. In addition, on the upper part of the support part 31,
A torsion spring support portion 35 is provided to be inserted into and support the coil portion 34a of the torsion spring 34.

One end 34 b of the torsion spring 34 presses the upper surface of the head arm 10 downward, and the other end 43 c is locked to the support portion 31. Therefore, the head arm 10
Is biased downward by the torsion spring 34 and presses the upper magnetic head 7 downward. Then, the urging force of the torsion spring 34 becomes the head pressure of the magnetic heads 6 and 7 against the disk surface.

Numeral 36 designates an engagement projection which engages with the spiral groove of the lead screw 11 from below.
b is provided on the upper surface. The engagement protrusion 36 is integrally formed with the carriage body 9 made of synthetic resin, and is provided so as to be inclined at an angle corresponding to the spiral groove of the lead screw 11.

When the lead screw 11 is driven to rotate by the stepping motor 13, the engaging protrusion 36 moves in the directions A and B by a distance corresponding to the rotation angle. Therefore, the head carriage 8 moves in the A and B directions by a distance proportional to the rotation amount of the lead screw 11 on condition that the engaging protrusion 36 is held in a state of being engaged with the lead screw 11. be able to.

Reference numeral 37 designates the lead screw 11 as the engagement projection 3
A torsion spring for pressing the supporting portion 31 is supported by a spring supporting portion 38 projecting to the rear of the supporting portion 31 with the coil portion 37a fitted. One end 37 b of the torsion spring 37 extends across the upper side of the lead screw 11, and its tip is inserted into the locking hole 31 a of the support portion 31.

Therefore, one end 37 of the torsion spring 37
Since b can be displaced vertically in the locking hole 31a, it is movably provided so as to allow relative displacement with respect to the lead screw 11 in that range. Further, the other end 37c of the torsion spring 37 is locked to the support portion 31.

Next, when the disk cartridge is inserted into the holder 2, the head contact for regulating the insertion height position of the disk cartridge so that the front end of the disk cartridge does not contact the lower magnetic head 6 of the head carriage 8. The contact prevention mechanism will be described with reference to FIGS. FIG. 15 is a perspective view showing the head carriage 8 and the protector 14, and FIG. 16 is a plan view showing the protector 14 before the disk cartridge is inserted.
7 is a side view showing the protector 14 before the disk cartridge is inserted, and FIG. 18 is a rear view showing the positional relationship between the protector 14 and the lower magnetic head 6 before the disk cartridge is inserted.

The protector 14 of this embodiment is provided so as to be located in the vicinity of the magnetic heads 6 and 7 supported by the head carriage 8, and A and B are provided so as to cover the moving range of the head carriage 8. It is attached in the direction extending in the direction. The protector 14 is integrally formed of a synthetic resin, and has a first restricting portion 14a for restricting an insertion height position of a front end of the disk cartridge inserted into the holder 2, and a protector 14 provided behind the first restricting portion 14a. The second restricting portion 14b that extends, the shaft 14c that is the center of rotation of the first restricting portion 14a, the shaft 14d that is the center of rotation of the second restricting portion 14b, and the first restricting portion 14a Second regulating unit 14
b, and an engaging portion 14f extending from an end of the shaft 14d in a direction inclined by a predetermined angle α with respect to the first regulating portion 14a and the second regulating portion 14b.

The protector 14 is provided on the chassis 4 so as to rotate about the shafts 14c to 14e as the holder 4 moves up and down. Bosses 41 a to 41 c for rotatably supporting the shafts 14 c to 14 e of the protector 14 protrude from the plane 4 a of the chassis 4.

The shafts 14c to 14e are provided so as to be coaxial, and are pressed against the side surfaces of the bosses 41a to 41c by pressing portions 42a to 42c of a leaf spring 42 fixed on the plane 4a of the chassis 4. Is held. The leaf spring 42 is attached to the shaft 14c so that the protector 14 does not fall off.
To 14e, but does not rotate the protector 14 itself.

As shown in FIG. 9, a lever 43 is provided at the rear of the holder 2 so as to be bent in a U-shape and extend below the holder 2 in the A and B directions. In addition, lever part 4
3 is a first contact portion 43a with which the engaging portion 14f of the protector 14 contacts, and a second regulating portion 14b of the protector 14.
And a second abutting portion 43b that abuts on the second abutting portion. The second contact portion 43b is configured to be supported via a step portion at the tip of the first contact portion 43a according to the shape of the protector 14.

When the holder 2 rises from the mounting position to the disk insertion / ejection position, the second contact portion 43b lifts the second restricting portion 14b to elevate the protector 14 and raise the protector 14. The first contact portion 43a presses the engaging portion 14f downward in the process of lowering the disc from the disc insertion / ejection position to the mounting position, and the protector 1
4 is rotated to the regulation release position.

As described above, in the present embodiment, the lever 43 provided on the holder 2 can directly press the protector 14 to rotate the protector 14 to the contact preventing position or the restriction releasing position. The sliding operation of the slider 3 is performed by a rotating operation of a rotating lever, and a contact preventing member (corresponding to the protector 14 of the present embodiment) is slid to a contact preventing position or a restriction release position. The configuration can be simplified and the number of parts can be reduced.

As a result, there is no need to secure a space for installing the rotating lever or a sliding range of the contact prevention member, and it is sufficient if there is space for the protector 14 to rotate. Can respond. Next, the operation of the head contact prevention mechanism configured as described above will be described.

Before inserting the disc cartridge, FIG.
As shown in FIG. 5, a lever 43 provided on the holder 2 is provided.
Makes the second contact portion 43b contact the side surface of the second regulating portion 14b on the bottom surface side of the protector 14, and lifts this. Therefore, the first restricting portion 14a and the second restricting portion 14b stand on the plane 4a of the chassis 4, and the end surface 14g of the first restricting portion 14a and the end surface 14h of the second restricting portion 14b are 2 is formed at a height position that regulates the insertion height of the disc cartridge inserted into the disc cartridge 2.

Therefore, the front end of the disk cartridge inserted into the holder 2 slides on the end surfaces 14g and 14h of the protector 14 to slide the head surface 6 of the lower magnetic head 6.
It will pass above dimension a by dimension a. Therefore, when the disk cartridge is inserted into the holder 2, the front end of the disk cartridge is prevented from colliding with the lower magnetic head 6.

FIG. 19 is a plan view showing the protector 14 when a disk cartridge is mounted, FIG. 20 is a side view showing the protector 14 when a disk cartridge is mounted, and FIG. FIG. 4 is a rear view showing the positional relationship of the magnetic head 6.

Then, the holder 2 is lowered to the mounting position by the sliding operation of the slider 3 in the direction B to mount the disk cartridge at the predetermined mounting position. When the holder 2 is lowered to the mounting position in this manner, the first contact portion 43a of the lever 43 provided on the holder 2 presses the engaging portion 14f of the protector 14 downward.

The protector 14 has a contact portion 4 of the lever portion 43.
Since the engaging portion 14f is pressed downward by 3a, the holder 2 rotates from the contact prevention position standing on the chassis 4 to the restriction release position as the holder 2 descends. Therefore, when the holder 2 is lowered to the mounting position, the protector 14
As shown in (1), the magnetic head 6 is rotationally displaced to a position lower by the dimension b than the head surface 6a.

As a result, the protector 14 is configured such that the first restricting portion 14a and the second restricting portion 14b
, And is held in that position.
In this manner, by rotating the protector 14 to the restriction release position in conjunction with the lowering operation of the holder 2, the disk in the mounted disk cartridge can come into contact with the magnetic head 6 without being disturbed by the protector 14. it can.

When the magnetic recording / reproduction is completed by the magnetic heads 6 and 7 and the eject operation is performed, as described above, the slider 3 slides in the direction A and the holder 2 moves up to the cartridge insertion / ejection position. For this reason, as shown in FIG. 18, the second contact portion 43b of the lever portion 43 provided on the holder 2 with the rising operation of the holder 2
Lifts the side surface of the second restricting portion 14b on the bottom surface side of the protector 14 and rotates the first restricting portion 14a and the second restricting portion 14b to the contact preventing position where the first restricting portion 14a and the second restricting portion 14b stand on the flat surface 4a of the chassis 4. Let it. The protector 14 is now in the holder 2
It is held at a contact prevention position for preventing the head of the disk cartridge inserted into the disk cartridge from colliding.

In the above embodiment, the magnetic disk device has been described as an example. However, the present invention is not limited to this, and it is needless to say that the present invention can be applied to other optical disk devices or magneto-optical disk devices. Further, in the above embodiment, the protector 14 is provided in the direction extending in the A and B directions and is configured to be rotated in the lateral direction. However, the present invention is not limited to this, and the protector 14 is rotated in the A and B directions. You may make it provide in the direction which makes it. In this case, the insertion height of the disk cartridge cannot be restricted over the entire moving range of the head carriage 8, but the insertion height of the disk cartridge can be restricted at least near the position where the magnetic head 6 slides on the innermost track. What should I do?

[0073]

As described above, according to the first aspect of the present invention, the contact preventing member is provided with the holder in the mounting position or in the cartridge insertion position.
By being directly pressed by the holder in the process of moving to the eject position, the holder can be displaced to a contact prevention position for restricting the insertion position of the disk cartridge or a restriction release position for releasing the restriction on the disk cartridge. Therefore, a mechanism for displacing the contact preventing member by displacing the contact preventing member by transmitting the operation of the slider to the contact preventing member as in the related art can be simplified. , The space can be reduced to save space.

[0074]

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a disk drive according to the present invention.

FIG. 2 is an exploded perspective view of the disk device.

FIG. 3 is a perspective view showing a mounting state of a holder and a slider.

FIG. 4 is a diagram showing a configuration of a holder.

FIG. 5 is a diagram showing a configuration of a slider.

FIG. 6 is a plan view showing a mounting state of a holder and a slider when a disk cartridge is inserted and ejected.

FIG. 7 is a side view showing a mounting state of the holder and the slider when the disk cartridge is inserted and ejected.

FIG. 8 is a plan view showing a mounting state of the holder and the slider when the disk cartridge is mounted.

FIG. 9 is a side view showing a mounting state of the holder and the slider when the disk cartridge is mounted.

FIG. 10 is a front view showing a state where the holder and the slider are attached to the chassis.

FIG. 11 is a side view of the head carriage.

FIG. 12 is a plan view of a head carriage.

FIG. 13 is a rear view of the head carriage.

FIG. 14 is a diagram illustrating a configuration of a carriage body.

FIG. 15 is a perspective view showing a head carriage and a protector.

FIG. 16 is a plan view showing the protector before a disk cartridge is inserted.

FIG. 17 is a side view showing the protector before a disk cartridge is inserted.

FIG. 18 is a rear view showing the positional relationship between the protector and the lower magnetic head before inserting the disk cartridge.

FIG. 19 is a plan view showing the protector when a disk cartridge is mounted.

FIG. 20 is a side view showing the protector when a disk cartridge is mounted.

FIG. 21 is a rear view showing the positional relationship between the protector and the lower magnetic head when a disk cartridge is mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk device 2 Holder 2d, 2e opening 2f Guide pin 3 Slider 3b, 3c Side plate 3d Guide groove 3e Sliding part 3f Escape part 3i Cut-and-raised part 4 Chassis 6,7 Magnetic head 8 Head carriage 9 Carriage body 10 Head arm 11 Lead Screw 13 Stepper motor 14 Protector 42 Leaf spring 43 Lever

Claims (1)

(57) [Claims] A holder that moves to a predetermined mounting position upon insertion of the disk cartridge and moves from the mounting position to a cartridge insertion / ejection position by an eject operation; and a holder for inserting the disk cartridge into the holder. A contact preventing member that regulates the insertion position of the disk cartridge so that the end of the disk cartridge does not contact the magnetic head. A disk device which is directly pressed by the holder in a process of moving to an eject position, and is displaced to a contact prevention position for restricting an insertion position of the disk cartridge or a restriction release position for releasing restriction on the disk cartridge; .