JP2001143359A - Disk drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk drive which has superior vibration resistance. SOLUTION: The disk drive is equipped with a cartridge holder 3 which holds a disk cartridge 6 detachably and opening and closing arms 4 and 5 which open and close a shutter 11 that the disk cartridge 6 has, and the cartridge holder 3 is provided with a shutter holding member 52 which holds the shutter 11 opened up to its fully-open position by the opening and closing arms 4 and 5.

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 structure of a shutter holding means provided in a disk cartridge.

[0002]

2. Description of the Related Art In recent years, an image file system using an optical disk (including both a write-once type and a rewritable type) as a file memory has attracted attention because its recording density is much higher than other information recording media. Various disk drive devices and disk cartridges suitable for this have been studied.

FIG. 53 is a simplified perspective view showing an example of this type of disk drive device. The disk drive device is formed in a frame shape in which a disk cartridge can be housed, and an opening for inserting the turntable 1 into the bottom surface. One ends of opening and closing arms 4 and 5 are rotatably mounted on side portions of the cartridge holder 3 where the portion 2 is opened near the disk cartridge stopping end, and pins 4a and 5a attached to their distal ends are provided.
Are disposed on the disk cartridge insertion path in the cartridge holder 3. In addition, the opening and closing arms 4 and 5
The disk cartridge 6 is always set by a spring member not shown.
Are ejected from the cartridge holder 3 and are rotated inward (in the directions of arrows A and B) by the insertion force of the disc cartridge 6. It is configured to automatically return to the original position by the elastic force of the member.

On the other hand, as shown in FIGS. 54 and 55, a disk cartridge 6 applied to this disk drive is substantially equivalent to a half 8 in which a double-sided recording type optical disk 7 is rotatably housed. A window 10 for inserting a head and a turntable is provided in a portion extending from the center to the front edge 9.
Along the front edge 9, the window 1
A shutter 11 capable of opening and closing the shutter 0 is slidably mounted. The double-sided recording type optical disk 7 is formed by joining two optical disk single plates each having a recording layer formed on one surface of a transparent substrate with the recording layer inside.

[0005] A sliding portion 12 for sliding the pin 4a or 5a is formed in the front edge 9 of the disk cartridge 6, and the pin 4a or 5a is opened when the shutter 11 is fully opened. A concave portion 13 following the sliding portion 12 is provided at a contact position. Also,
A notch 14 for positioning with respect to the cartridge holder 3 is formed in a side surface portion of the disk cartridge 6, and a rear edge portion 1 of the upper half 8a and the lower half 8b is formed.
At the corner near the fifth, erroneous erasure prevention mechanisms 16 and 17 are provided at symmetrical positions with respect to the center line CC of the window hole 10.

When the disk cartridge 6 is not used, that is, before it is inserted into the cartridge holder 3, the window hole 10 is closed by a shutter 11 as shown in FIG. Intrusion of foreign matter from 10 is prevented, and the optical disk 7 is protected.

When the disc cartridge 6 is inserted into the cartridge holder 3, first, as shown in FIG. 54, one of the pins 4a is inserted into the space 18 formed by the end face of the shutter 11 and the sliding portion 12. Inserted.

When the disc cartridge 6 is further pushed in from this state, the pressing force causes one arm 4 to rotate in the direction of arrow A, and the pin 4a engages with the end face of the shutter 11 to open the shutter 11 in the opening direction D. Press

At this time, the other pin 5a is not engaged with the shutter 11, but rides on the front surface of the shutter 11 and slides on the surface in the direction of arrow B.

When the disc cartridge 6 is inserted to the predetermined position of the cartridge holder 3, the shutter 11 moves in the direction of the arrow D by a predetermined amount as shown in FIG. 55, and the window hole 10 is opened. At this time, the pin 4a falls into the recess 13 formed in the front edge 9 of the disk cartridge 6, and the shutter 11 is fixed at that position.

At the same time, a sensor (not shown) provided on the cartridge holder 3 detects that the disk cartridge 6 has been inserted to a predetermined position, and moves down the cartridge holder 3 to place it on the turntable 1. The optical disk 7 is clamped. Thus, the loading of the disc cartridge 6 is completed.

FIGS. 56 (a) and 56 (b) show another example of a disk cartridge which has been conventionally studied.
As shown in FIG. 2, there is a shutter 11 in which a notch 19 is formed on the front surface of the shutter 11 and the shutter 11 is opened and closed by engaging the pin 5a or 5b with the notch 19.

[0013]

As described above, in the conventional disk drive, when the disk cartridge 6 is inserted into the cartridge holder 3, the disk drive 6 is mounted on the disk holder 6 by the arm 4 provided on the cartridge holder 3. Since the shutter 11 is opened and the arm 11 alone holds the shutter 11 even after the loading of the disk cartridge 6 is completed, the shutter 11 is opened.
When the engagement between the arm 4 and the shutter 11 is released by receiving an external force such as vibration, the shutter automatically moves in the closing direction by the elastic force of the spring member. There is a problem that the used head device is easily broken.

An object of the present invention is to solve the above-mentioned deficiencies of the prior art, and an object of the present invention is to provide a disk drive having excellent earthquake resistance.

[0015]

According to the present invention, there is provided a disk cartridge provided with a shutter which slides in one direction from an open / close position to open a window formed in a cartridge case. A cartridge holder for detachably holding the cartridge; and an opening / closing arm rotatably mounted on the cartridge holder and moving the shutter in an opening direction by an insertion force when the disc cartridge is inserted into the cartridge holder. And a shutter holding member for holding a shutter opened by the opening / closing arm at a predetermined open position when the disk cartridge is inserted to a position where the insertion of the cartridge holder is completed, is provided in the cartridge holder. Was configured.

As described above, if the shutter holding member for holding the shutter opened by the opening / closing arm at the predetermined opening position is provided in the cartridge holder, if the engagement between the shutter and the arm is illegally released, Also, since the shutter and the shutter holding member are engaged with each other to prevent the shutter from moving in the closing direction, the shutter and the head device can be prevented from being destroyed, and the earthquake resistance of the disk drive device can be improved. .

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to description of a disk drive device according to the present invention, an example of a disk cartridge which is mounted on the disk drive and on which information is recorded and reproduced will be described with reference to FIGS. 22 to 31. . In these figures,
Members or portions corresponding to those shown in FIGS. 54 to 56 are denoted by the same reference numerals.

As shown in FIG. 22, the disc cartridge 6 includes a cartridge case 21 mainly made of hard plastic, a double-sided recording type optical disk 7 rotatably housed in the cartridge case 21, and a cartridge case 21. A slider 22 slidably attached to the front edge 9 of the cartridge 21; and a shutter 11 fixed to the slider 22 and sliding in one direction from the closed position to open and close the window 10 formed in the cartridge case 21. And a shutter pressing plate 18 for pressing the tip of the shutter 11.

The cartridge case 21 comprises an upper half 8a and a lower half 8b, as shown in FIG.
These two halves 8a and 8b are connected to a plurality of screws (not shown).
Are used to form a space for accommodating the optical disk 7 and other components.

As shown in FIG. 23, the lower half 8b has a length extending substantially from the center corresponding to the rotation center P of the optical disk 7 toward the front edge 9 (side edge on the side inserted into the disk drive). A hole-like window hole 10 is opened, and openings 16a and 17a for an erroneous erasure prevention mechanism are symmetrically opened on both left and right sides near the rear edge 9a. The width W of the window hole 10 is formed such that a turntable for rotating and driving the optical disk 7 and a head for recording / reproducing information on the optical disk can be inserted.

As shown in FIGS. 23 and 24, a joining wall 23 having a constant height is provided upright on the outer peripheral edge of the lower half 8b except for the front edge portion 9. Also, the optical disk 7
On the circumference centered on the rotation center P of the joint wall 2
A partition wall 24 having the same height as that of the optical disk 7 is provided in a ring shape and forms a storage space 24a for the optical disk 7. Furthermore, on the circumference around the rotation center P around the window hole 10,
A disk receiver 10a, which is lower than the joining wall 23 and the partition wall 24, is erected in a ring shape.

On the front edge 9 of the lower half 8b, a guide rail 25 slightly lower than the joining walls 23 and 24 is formed in a straight line. A step 25a is formed. Inside the guide rail 25, a joining wall 26 having the same height as the joining walls 23 and 24 is provided upright in parallel with the guide rail 25.

As shown in FIG. 25, a portion of the front edge of the lower half 8b facing the window hole 10, as shown in FIG.
A reinforcing portion 27 recessed from the surface b is formed integrally with the tip of the guide rail 24 in the same plane.

Furthermore, the shutter 1 on the outer surface of the lower half 8b
As shown in FIG. 25, a recess 28 is provided in a portion where the shutter 1 slides to accommodate the surface of the shutter 11 in the surface of the lower half 8b.

On the other hand, the upper half 8a is formed in substantially the same shape as that of the lower half 8b except that each member is provided in a symmetrical position with the lower half 8b. Therefore, these two halves 8a, 8
When b is joined, a slider insertion hole 29 is formed in a straight line at the joined portion of the front edge 9 as shown in FIGS. 26 (a) and 26 (b).

Next, the configuration of the shutter 11 will be described.

As shown in FIGS. 27 and 28, the shutter 11 is formed by bending a thin plate made of stainless steel or the like into a U-shape so as to cover the entire window hole 10 at the same time. 11a and lower piece 11b,
A front piece 11c having a width substantially equal to the thickness S of the shutter setting portion of the cartridge case 8 is integrally formed with the front piece 11c of the upper piece 11a and the lower piece 11b.
The engaging claw 30 is bent inward at a portion close to the above.

The slider 22 is, as shown in FIG.
The guide rail 25 comprises a wide front part 31, a narrow rear part 32, and a connecting part 33 for connecting these parts. The guide rail 25 is inserted into concave grooves 34a, 34b formed by these parts.
The interior can be decorated. The front part 32 is the third
As shown in FIG. 0 and FIG. 31, the width W of the
The head insertion portion 35 formed to have a slightly larger length 1 and a width T2 equal to or smaller than the thickness T1 of the reinforcing portion 27, and a width substantially equal to the inner width of the shutter 11. A shutter mounting portion 36, a tapered portion 37 formed at the tip of the shutter mounting portion 36, and a pin engaging portion 37 a formed on the opposite side of the shutter mounting portion 36 through the head insertion portion 35. Become. The pin engaging portion 37a is formed to have substantially the same width as the shutter mounting portion 36.

On the front, upper and lower surfaces of the shutter mounting portion 36, there are formed recesses 38 into which the shutter 11 can be housed. In addition, a concave portion 39 for facilitating engagement of the locking claw 30 formed on the shutter 11 is formed in the upper and lower central portions of the shutter mounting portion 36. Further, the recess 3 for engaging the locking claw of the shutter mounting portion 36 is formed.
9 has a recess 40 for inserting the locking claw 30 therein.
Are formed.

The rear surface portion 32 is formed to have the same width over the entire length when the slider 22 is viewed from the rear surface side.
As shown in FIG. 31, a spring engaging portion 32b is protruded from the end on the taper portion 37 side.

The slider 22 is integrally formed of a synthetic resin having excellent lubricity, such as nylon or polyacetal.

The shutter 11 is provided with a slider 22 by engaging a locking claw 30 with the shutter mounting portion 36.
Attached to The slider 22 has a tapered portion 37.
To the moving side of the shutter 11 when the shutter 11 is opened.
A and 34b are slidably attached to the cartridge case 21 by straddling the guide rail 25.

At this time, the upper piece 11a and the lower piece 11b of the shutter 11 are respectively superposed on the upper and lower surfaces of the cartridge case 21 to close the window holes 10 formed in the upper half 8a and the lower half 8b. The tip of the shutter 11
Slender holding plate 18 adhered to cartridge case 21
Is brought into close contact with the cartridge case 21.

The shutter stop step 25a
Is the shutter 1 when the end face of the slider 22 is contacted.
1 is formed with a positional relationship such that the side portion does not contact the end face of the concave portion 28. Thus, dust generation due to the collision between the shutter 11 and the cartridge case 21 can be reduced.

Hereinafter, a first example of a disk drive according to the present invention will be described with reference to FIGS. 1 to 21.

FIG. 1 is a perspective view of the vicinity of the cartridge holder, FIG. 2 is a plan view of the cartridge holder, FIG. 3 is a side view of the cartridge holder viewed from the direction in which the disk cartridge is inserted, and FIG. It is sectional drawing seen from. In these figures, the fifth
Parts corresponding to those in FIG. 3 are denoted by the same reference numerals.

As shown in these figures, in the disk drive of this embodiment, two open / close arms 4 and 5 are mounted on the top surface of the top plate 3b of the cartridge holder 3. The top plate 3b has an elongated head insertion hole 3d extending from the stop end 3a of the disk cartridge to a portion facing the window hole 10 of the disk cartridge inserted from the stop end 3a.

Each of the opening and closing arms 4 and 5 is shown in FIG.
As shown in the drawing, the head insertion holes 3d are combined so as to intersect symmetrically with respect to the center line XX of the head insertion holes 3d, and the support shafts 4b,
5b is rotatably attached to the insertion opening side of the cartridge holder 3, and its tip is disposed on the disk cartridge stop end 3a side of the cartridge holder 3. Therefore, the first opening / closing arm 4 in which the support shaft 4b is set to the left of the center line XX, the distal end is disposed to the right of the center line XX, and the support shaft 5b is connected to the center line XX. The second opening / closing arm 5 set on the right side has a distal end disposed on the left side of the center line XX.

Each of the opening / closing arms 4, 5 is, as shown by a dashed line in FIG. 2, even when driven to the innermost position, the window holes 10 and 10 of the disc cartridge inserted into the cartridge holder 3. The shape, arrangement, rotation range, and the like are set so as not to block the head insertion hole 3d. In addition, these two opening / closing arms 4 and 5 have their shapes and shapes so that none of them protrudes outside the range of the top plate 3 b of the cartridge holder 3 while moving from the start end to the end of the operation range. The arrangement, the rotation range, and the like are set. Further, in order to prevent the two opening / closing arms 4 and 5 from interfering with each other during operation, as shown in FIGS. 3 and 4, heights are set at set positions with respect to the support shafts 4b and 5b. It is configured to cross three-dimensionally.

Pins 4a and 5a are attached to the ends of the opening and closing arms 4 and 5, respectively.
As shown in FIGS. 1 and 2, 5a is disposed outside the shutter closed position in the cartridge holder 3 through the arc-shaped through holes 41a and 41b formed in the top plate 3b. . Of course, the through holes 41a and 41b are formed on an arc centered on the support shafts 4b and 5b of the arms 4 and 5, respectively.

The open / close arms 4 and 5 include a return spring 42.
a, 42b are always urged outward. Thus, when the disc cartridge 6 is not inserted, one of the pins 4a is engaged with the pin engaging portion 37 of the slider 22 at the closed position.
It is arranged so that it may contact the outer surface of a. The other pin 5a is arranged to be in contact with the outer surface of the pin engaging portion 37a of the slider 22 at the closed position when the disk cartridge 6 is turned upside down and mounted on the cartridge holder 3.

The initial setting angles of the opening and closing arms 4 and 5, ie, the arms 4 when the disc cartridge 6 is not inserted.
The angle θ formed by the line segment EE connecting the support shaft 4b (5b) and the pin 4a (5a) with the insertion direction FF of the disk cartridge 6 in (5) closely affects the loading force of the disk cartridge 1. However, when the angle θ is reduced, the loading force increases and the usability deteriorates.

As schematically shown in FIG. 5, the loading force of the disk cartridge 6 is F1, the closing force of the shutter 11 is Fs, the restoring force of the opening / closing arm 4 (5) is Fp, and the line segment E is shown.
The angle between -E and line segment FF is θ, pin 4a (5a)
Is the friction coefficient when sliding along the front edge of the disk cartridge 6, the loading force F1 is expressed by the following equation.

F1 = {tan θ / (tan θ−μ)} × {(Fs / tan θ) + (Fp / sin θ)} For example, in the case of a small optical disk drive, to ensure that the shutter 11 closes when not in use It is necessary to set the closing force Fs of the shutter 11 to 1.5 N (Newton) or more. In order to ensure that the opening / closing arm 4 (5) returns to the original position, the restoring force Fp of the opening / closing arm 4 (5) is set to 0.2N or more. The friction coefficient μ between the pin 4a (5a) and the disk cartridge 6 is about 0.2.

FIG. 6 shows the relationship between the angle θ and the loading force F1 in the optical disk drive obtained by the above equation. From experience, if the loading force F1 is 5N or more, the usability deteriorates and it becomes unsuitable for practical use. From this graph, the arm angle θ must be used in the range of 29 degrees or more. It is understood that the set angle of the arm when not in use must be 65 degrees or more.

As shown in FIGS. 1 and 2, whether the disk cartridge 6 has been inserted to a predetermined position and whether the shutter 11 has been completely opened are provided on the disk cartridge stop end 3a side of the cartridge holder 3. A sensor 51 for detecting whether the shutter 11 is open or not and a shutter holding member 52 for holding the shutter 11 opened by the opening arm 4 or 5 at a predetermined opening position are set.

The sensor 51 is mounted on the cartridge holder 3
And a switch device for a drive source (not shown) that moves the cartridge holder up and down. When the disk cartridge 6 is inserted to a predetermined position and the shutter 11 is completely opened, the drive source is started to activate the cartridge holder. 3 is lowered to the turntable 1 side.

FIG. 7 is a perspective view showing a first example of the shutter holding member 52, in which the side shape is an upper piece 52a and a lower piece 52b.
The upper piece 52a and the lower piece 52b are formed with a head insertion portion 35 of the slider 22 at the inner surface tips of the upper piece 52a and the lower piece 52b.
A chamfer 53a is provided for facilitating the insertion of the tape. The total height H of the shutter holding member 52 is formed to be equal to or smaller than the thickness S of the cartridge case 21, and the distance w between the inner surfaces of the upper piece 52a and the lower piece 52b is set.
Is formed slightly larger than the thickness of the head insertion portion 35 of the slider 22. When the shutter 11 is opened to the full open position, the shutter 2
It is set at a position where it can engage with an end face formed between the second head insertion portion 35 and the shutter mounting portion 36.

FIG. 8 is a perspective view showing a second example of the shutter holding member 52. In order to facilitate engagement with the slider 22, a chamfer 53b is also provided on the side surfaces of the upper piece 52a and the lower piece 52b. It has been subjected. Others are the same as those of the shutter holding member of the first example.

FIG. 9 is a perspective view showing a third example of the shutter holding member 52. In order to facilitate engagement with the slider 22, chamfers 53c are provided at both ends of the upper piece 52a and the lower piece 52b. It has been subjected. Others are the same as those of the shutter holding member of the first example.

FIG. 10 is a perspective view showing a fourth example of the shutter holding member 52. In order to simplify the structure, the shutter holding member 52 is formed in an L-shape including a horizontal piece 55 and a vertical piece 56. Others are the same as those of the shutter holding member of the first example.

FIG. 11 is a perspective view showing a fifth example of the shutter holding member 52. In order to facilitate engagement with the slider 22, both ends of the horizontal piece 55 are chamfered 53d. . The rest is the same as the shutter holding member of the fourth example.

FIG. 12 is a perspective view showing a sixth example of the shutter holding member 52, which includes a mounting portion 57 for the cartridge holder 3 and a pin-shaped locking portion 58 projecting vertically from the mounting portion 57. It is composed of As shown in FIG. 13, the shutter holding member 52 of this embodiment
Can be set to engage with the end face formed between the head insertion portion 35 of the slider 22 and the shutter mounting portion 36 when the slider is opened to the fully open position.
As shown in FIG. 4, a through hole 5 is formed in the front piece 11c of the shutter 11.
9a, a recess 59b is formed in the shutter mounting portion 36 of the slider 22 at a position corresponding to the through hole 59a, and the locking portion 58 is inserted into the recess 59b. Can also. FIG. 15 is a perspective view showing a seventh example of the shutter holding member 52, and includes a fixing portion 61 fixed to the cartridge holder 3 and a fixing portion 61.
An engaging pin 62 is mounted between the fixing portion 61 and the engaging pin 62 so as to protrude or be inserted into the fixing portion 61 so that the engaging pin 62 always projects from the fixing portion 61. And a biasing spring member 63.

As shown in FIGS. 16 and 17, a hole 64 for slidably receiving the engaging pin 62 is formed in the center of one end of the fixing portion 61. On the peripheral surface, an introduction line 65a communicating with the opening of the hole 64 and extending in the axial direction of the hole 64, a connection groove 65b extending in the circumferential direction of the hole 64 from an end of the introduction groove 65a, and an end of the connection groove 65b A guide groove 65c extending in the axial direction of the hole 64 is formed. A hub 66 projects outward from the other end of the fixing portion 61, and a screw insertion hole 67 is formed in the hub 66.

On the other hand, the eighteenth
As shown in the figure, a projection 68 is provided so as to protrude through each of the grooves 65a, 65b, 65c.

The shutter holding member 52 includes a fixing portion 61
After the spring member 63 is housed in the hole 64 formed in the opening 64, the protrusion 68 protruding from the engaging pin 62 is inserted into the introduction groove 65a.
By being inserted in the order of the connection groove 65b and the guide groove 65c, they are integrally assembled.

FIG. 19 is a perspective view showing an eighth example of the shutter holding member 52. In order to facilitate engagement with the slider 22, a rolling member 69a is provided at the tip of the engaging pin 62. The portion is set to protrude outside. The rest is the same as the shutter holding member of the seventh example.

FIG. 20 is a perspective view showing a ninth example of the shutter holding member 52, which includes a fixing portion 61, an engagement arm 70 rotatably mounted on the fixing portion 61, and the fixing portion 61. A spring member 63a is stretched between the engaging arm 61 and the engaging arm 70 and constantly biases the engaging arm 70 in a direction opposite to the insertion direction of the disk cartridge 6.

FIG. 21 is a sectional view of the shutter holding member 52 of FIG.
FIG. 14 is a perspective view showing an example, in which a rolling member 69b is provided at the tip end of an engagement arm 70 to facilitate engagement with the slider 22;
Is set so that a part thereof protrudes outside. Others are the same as those of the shutter holding member of the ninth example.

When the shutter 11 is opened to the fully open position, the shutter holding members 52 of the seventh to tenth examples
The head insertion portion 35 of the slider 22 and the shutter mounting portion 36
Can be set to engage with an end face formed between the shutter 11 and the front piece 11 c of the shutter 11.
a and the shutter mounting portion 3 of the slider 22
6, a recess 59b may be formed at a position corresponding to the through hole 59a, and the engaging pin 62 or the engaging arm 70 may be inserted into the recess 59b (see FIG. 13 and FIG. 13). (See FIG. 14).

The operation of the disk drive constructed as described above will be described below with reference to FIGS. 32 and 33.

Before the disk cartridge is inserted, as shown in FIG.
Are separated from the turntable 1 and, as shown in FIG. 32, two pins 4a and 5a are respectively arranged on both left and right sides.

When the disk cartridge 6 is inserted into the cartridge holder 3, as shown in FIG. 32, one of the pins 4a comes into contact with the outer surface of the pin engaging portion 37a of the slider 22 in the closed position, and The other pin 5a
Is in contact with the front edge of the disk cartridge on the shutter opening side.

When the disc cartridge is further inserted, the arms 4 and 5 are driven inwardly by the pressing force, and the shutter 1 is driven by the driving force of one arm 4.
1 is driven in the opening direction. In the process of driving the shutter 11 in the opening direction, the other pin 5a is associated with the slider 22, but since the slider 22 has the tapered portion 37,
The pin 5a rides on the front piece 11c of the shutter 11 without colliding with the slider 22.

When the disk cartridge 6 is inserted to the innermost portion 3a of the cartridge holder 3, the shutter 11 is fully opened as shown in FIG.
2, the shutter holding member 52 is engaged. At the same time, the sensor 51 detects that the disk cartridge 6 has been inserted to the predetermined position and that the shutter 11 has been completely opened, and a drive source (not shown) is driven to turn the cartridge holder 3. It is lowered to the table 1 side.

As a result, the optical disk 7 is mounted on the turntable 1, and the recording / reproducing operation can be performed.

In the disk drive of the above embodiment, since the two open / close arms 4 and 5 are mounted on the top plate 3c of the cartridge holder 3, there is no need to provide a special space for setting the open / close arms 4 and 5. The planar size of the disk drive can be reduced as compared with the case where the opening / closing arms 4 and 5 are arranged on the side surface of the cartridge holder 3.

Also, the two open / close arms 4 and 5 are crossed,
The base end of the cartridge holder 3 is rotatably attached to the insertion opening side of the cartridge holder 3, and the front end thereof is attached to the cartridge holder 3.
, The initial setting angles of the open / close arms 4 and 5 can be increased, and therefore, the shutter 11 can be driven with a small force, and the usability can be improved.

Further, since the pins 4a and 5a for driving the shutter provided at the tips of the opening and closing arms 4 and 5 are disposed outside the shutter closing position in the cartridge holder 3, the pins are formed on the slider 22. Pin engagement part 3
7 can be engaged with each other with a sufficient margin, so that the inconvenience that the two are disengaged during the shutter opening / closing operation is less likely to occur.

In addition, since the shutter holding member 52 is set at the innermost portion of the cartridge holder 3 and the shutter 11 (slider 22) opened to the fully open position is engaged, improper vibration may be applied. When the pin 4a or 5a is disengaged from the slider 22, the shutter 11
Is not closed, and damage to the optical head and the like can be prevented.

Since the head insertion hole 3 d and the opening 2 are respectively formed on the upper and lower surfaces of the cartridge holder 3, the optical head and the external magnetic field are applied to the optical disk 7 housed in the disk cartridge 6 from the upper and lower surfaces of the cartridge holder 3. And can be used as a disk drive for a magneto-optical disk.

Hereinafter, a second example of the disk drive device according to the present invention will be described with reference to FIGS. 34 to 40.

FIG. 34 is a perspective view of a disk drive according to the second embodiment, in which 81 is a base, 82 is an outer wall,
Reference numeral 82a denotes a bag portion, 83 denotes a holder driving member, 83a denotes a cut, 84 denotes a guide roller, 86 denotes a tension spring, 87 denotes a sensor, and other portions corresponding to FIG. 1 are denoted by the same reference numerals. . The base 81 is provided with members such as the turntable 1 and the optical head, but they are not shown in order to prevent the drawing from becoming complicated.

In the figure, a holder driving member 83 is provided above the base 81 in the direction of arrow M (disc cartridge 6).
The cartridge holder 3 is positioned so as to be movable in the direction of the arrow M ′ opposite to this direction, and the cartridge drive 3 is positioned above the holder drive member 83. The cartridge holder 3 is movable upward and downward as indicated by arrows N and N ', and is urged in the direction of arrow N' by a tension spring (not shown). Since the guide roller 84 is on the upper surface of the side wall of the holder driving member 83, the movement of the cartridge holder 3 in the direction of the arrow N 'is restricted.
A notch 83a is provided on the upper surface of the side wall of the holder driving member 83 with the disk cartridge insertion opening side of the cartridge holder 3 inclined. When the guide roller 84 enters the notch 83a, the cartridge holder 3 is moved by the tension spring to the arrow N '. Move in the direction (ie, descend).
Further, the guide rollers 84 provided on the side surfaces of the cartridge holder 3 are depressed on the inner side of the outer side wall 82 so that arrows N and N '.
The cartridge holder 3 can move in the directions of arrows N and N ', but cannot move in the directions of arrows M and M'.

On the upper surface of the cartridge holder 3, two support shafts 4b, 5b are provided adjacent to each other and arranged side by side in a direction orthogonal to the directions of the arrows M, M '. The opening / closing arm 4 has a second opening / closing arm 5 attached to the support shaft 5b.
Are rotatably mounted respectively. The first opening / closing arm 4 extends to the inner side of the cartridge holder 3 while turning the support shaft 5b toward the disc cartridge insertion port side, and the second opening / closing arm 5 also moves around the support shaft 4b to the cartridge holder. 3 extends to the back side. For this purpose, these opening and closing arms 4 and 5 are
They intersect so as not to interfere on the disk cartridge insertion opening side than b and 5b. Therefore, the mounting heights of the opening / closing arms 4 and 5 on the support shafts 4b and 5b are different, and a step 8 is provided downward on the higher opening / closing arm 4 so that the tip ends thereof have the same height. ing. Pins 4a and 5a are provided at the tips of the opening and closing arms 4 and 5 at the same height so as to protrude downward at the same length.

The first opening / closing arm 4 is urged clockwise around the support shaft 4b by a tension spring (not shown), and the second opening / closing arm 5 is similarly moved counterclockwise around the support shaft 5b. Energized clockwise. For this reason, when the disk cartridge 6 is not inserted into the cartridge holder 3, the opening / closing arms 4, 5 have the pins 4a,
5a are sufficiently separated. Cartridge holder 3
When the disk cartridge 6 is pushed into the disk cartridge 6, the pins 4 of the open / close arms 4 and 5
When the disc cartridge 6 is further pushed in, the first opening / closing arm 4 rotates counterclockwise around the support shaft 4b, and the second opening / closing arm 5 moves the support shaft 5b. The pin 4a or 5a opens the shutter of the disk cartridge 6 in accordance with whether the disk cartridge 6 has the surface A or the surface B facing upward.

In this way, the shutter can be opened by the pin 4a or 5a, regardless of whether the disk cartridge 6 is inserted into the openable arms 4 and 5 with the disk cartridge 6 being placed on either side A or B.

When the disc cartridge 6 is not inserted into the cartridge holder 3, the holder driving member 8
Reference numeral 3 indicates a state in which the guide roller 84 of the cartridge holder 3 has moved most in the direction of arrow M, and is located at a position off the cutout 83a of the side wall of the holder driving member 83. For this reason, the cartridge holder 3 is in a state of being lifted in the direction of arrow N, and the disk cartridge 6 can be inserted into the cartridge holder 3 in this state.

The disk cartridge 6 is pushed into the cartridge holder 3, and the shutter opening / closing arms 4, 5
When the disk cartridge 6 is pushed into the innermost part of the cartridge holder 3, a sensor (not shown) detects this and a motor (not shown) is started to pull the holder driving member 83 in the direction of arrow M '. To move. When the guide roller 84 enters the cutout 83a with the movement of the holder driving member 83, the cartridge holder 3 descends in the direction of the arrow N ', and the hub portion of the optical disk 7 housed in the disk cartridge 6 is moved downward. It is fixedly mounted on a turntable provided. At this time, the disk cartridge 6 is locked by a lock mechanism (not shown).

As described above, it is detected by the sensor (not shown) that the cartridge holder 3 has dropped to a position sufficient for the hub portion of the optical disk 7 to be fixedly mounted on the turntable. I do.

A sensor 87 is provided on the base 81 of the cartridge holder 3 on the side of the disk cartridge insertion opening. The sensor 87 operates with the lowering of the disk cartridge 6 and determines whether or not the disk cartridge 6 has been lowered to a predetermined position and whether or not the optical disk 7 is prohibited from recording (that is, whether or not the optical disk 7 is in the recording mode). No) is detected. When the sensor 87 detects that the disk cartridge 6 has been lowered to a predetermined position, the drive motor rotates the turntable, and
The optical disk 7 is rotated. When the sensor 87 detects that the optical disk 7 is not in the recordable mode, the recording on the optical disk 7 is prohibited.

When the disk cartridge 6 is ejected, the motor rotates with the user's ejection operation,
The holder driving member 83 moves in the direction of arrow M. At the same time, the guide roller 84 on the side of the cartridge holder 3
Is removed from the cutout 83a in the side wall of the holder driving member 83, and the cartridge holder 3 rises in the direction of arrow N. At the same time, the disk cartridge 6
It is pushed by the opening and closing arms 4 and 5 urged in the directions 1 and 2 and pushed out so as to be able to be ejected from the cartridge holder 3. The shutter of the disc cartridge 6 is urged in the closing direction, and the disc cartridge 6 is pushed out by the opening / closing arms 4 and 5, and the shutter is automatically closed. 35A and 35B are external views of the disc cartridge 6, wherein FIG. 35A shows the B side when the shutter is open, and FIG. 35B shows the A side when the shutter is closed. I have.

In the same figure, window holes 10 are provided on both sides of the disk cartridge 6 so as to overlap each other (the surface B shown in FIG. 35 (b) is hidden by the shutter 11). A slider 22 made of resin is provided on the distal end surface of the disk cartridge 6 so as to be slidable thereon, and the U-shaped shutter 11 is attached so as to sandwich the slider 22 and the main body of the disk cartridge 6. ing. The shutter 11 has a shape and dimensions to cover the window hole 10, and the window hole 10 is normally closed by a spring member (not shown) as shown in FIG. 34 (b).

In such a disk cartridge 7,
Erroneous erasure prevention mechanisms 16 and 17 are provided at the corners of the sides A and B opposite to the shutter 11 side, respectively. The erroneous erasure prevention mechanisms 16 and 17 are positioned symmetrically with respect to the center line of the disk cartridge 6 in a direction orthogonal to the direction in which the shutter 11 moves.

The erroneous erasure prevention mechanisms 16 and 17 are provided with openings 16a and 17a penetrating between the two surfaces, respectively.
Door members 16b and 17b slidable within 6a and 17a. These door members 16b, 17b
It is operated by operating members 16c, 17c provided on the back side, and is set to be switched between two states, that is, fully open or partially open the openings 16a, 17a.

The door members 16b, 17b have the openings 16a, 1
7b is completely closed, the side A of the optical disc 7 and the side B
The surface is recordable, and the door members 16b, 17b
a and 17a are partially opened, the optical disk 7
A and B are prohibited from recording.

The other parts are formed in the same manner as the disk cartridge shown in FIG.

Next, the operation of the open / close arms 4 and 5 when the disk cartridge 6 of this embodiment is loaded on the cartridge holder 3 will be described in more detail.

FIG. 35 is a view showing the structure of the opening / closing arms 4 and 5 and the rotating state at the time of loading, and the portions corresponding to the above-mentioned drawings are denoted by the same reference numerals.

In the figure, reference numeral 6 (a) denotes a pin 4
a, 5a when the disk cartridge 6 starts contacting
6 (b) shows the disk cartridge 6 when the loading into the cartridge holder 3 is completed. The opening / closing arms 4 and 5 are generally shown in contact with the disk cartridge 6 (b), and when in contact with the disk cartridge 6 (a), only their distal ends are shown. .

The open / close arms 4 and 5 are respectively supported by support shafts 4b and 5b.
And a straight portion on the tip side, and these bent portions are respectively supported by the support shafts 4b and 5b.
b is wrapped around the disk cartridge insertion opening side (in the direction of arrow M '). Therefore, the opening and closing arms 4 and 5 intersect so as not to interfere with the support shafts 4b and 5b in the direction of the arrow M ', and therefore have different heights from the cartridge holder 3. Here, the open / close arm 4
Shall be higher. Also, the first opening / closing arm 4
Is always urged clockwise around the support shaft 4b by the tension spring 42a. Similarly, the second opening / closing arm 5 is also counterclockwise rotated around the support shaft 5b by the tension spring 42b. Biased in the direction.

The rotation limit of the first opening / closing arm 4 in the clockwise direction and the rotation limit of the second opening / closing arm 5 in the counterclockwise direction are regulated by stoppers (not shown). When the arm 4 is present, the pin 4 of the opening / closing arm 4 must be attached to the disk cartridge 6 (a).
a contacts the pin engaging portion 37a of the slider 22 and the distal end surface of the disk cartridge 6 (a), and the pin 5b of the second opening / closing arm 5 contacts the opposite edge of the disk cartridge 6. A rotation limit has been set.

FIG. 37 (a) shows the disc cartridge 6
(A) shows a state where the pins 4a and 5a are in contact.

As described above, although the heights of the opening / closing arms 4 and 5 are different, the height of these tip portions is made equal by providing the step portion 88 on the opening / closing arm 4, and then the pins at these tip portions are set. The lengths 4a and 5a are defined such that they are equal in length and abut over a sufficient range in the thickness direction of the disk cartridge 6 (a). Thus, the pins 4a and 5a are
The pin 4a contacts the pin engagement portion 37a of the slider 22 sufficiently over the sufficient thickness range of (a). When the disc cartridge 6a (a) is turned over and inserted into the cartridge holder 3, the pin 5a of the opening / closing arm 5 is connected to the disc cartridge 6 (a) and the slider 2
The pin 4a contacts the second pin engaging portion 37a, and the contact state is the same as that of the pin 4a shown in FIG. 37 (a), as shown in FIG. 37 (b).

Returning to FIG. 36, when the disk cartridge 6 (a) is further inserted in the direction opposite to the arrow M ', the pins 4a, 5a are pushed by the disk cartridge 6 (a), and the opening / closing arm 4 is opened. Rotates counterclockwise about the support shaft 4b, and the opening / closing arm 5 rotates clockwise about the support shaft 5b. As a result, the slider 22 moves leftward due to the push of the pin 4a and the shutter 11 opens, but the pin 5a rides on the slider 22 moving leftward from the tapered portion 37.

In the disk cartridge 6 (b) for which loading has been completed, the shutter 11 is in a fully opened state. At this time, the opening / closing arm 4 is stopped at a position shifted from the window hole 10. The opening / closing arm 5 includes a pin 5
Although the pivot b is larger than the opening / closing arm 4 by the amount of riding on the slider 22, it still stops at a position shifted from the window hole.

In this state, if an improper rotational force is applied to the open / close arms 4 and 5, this may be further rotated. However, the support shaft 5b acts as a stopper for the opening / closing arm 4, and the opening / closing arm 4 abuts on the support shaft 5b so that it cannot rotate any more. The arm 5 comes into contact with the support shaft 4b and cannot rotate any more. The opening / closing arms 4 and 5 can be brought into contact with the support shafts 4b and 5b respectively.
The shapes of the open / close arms 4 and 5 and the positions of the support shafts 4b and 5b are determined so as to be shifted from zero.

As described above, the opening / closing arms 4 and 5 are always at positions shifted from the window holes 10, and dust or the like may enter the disk cartridge 6 from the opening / closing arms 4 and 5 via the window holes 10. Absent.

The support shafts 4b and 5b and the tension spring 42
a and 42b are provided on the cartridge holder 3,
Since the pivoting of the opening / closing arms 5a and 5b is also performed on the cartridge holder 3, the space of the shutter opening / closing mechanism composed of these almost overlaps with the space of the cartridge holder 3 in a plane, and slightly in the vertical direction. 3 only. Therefore, the size of the disk drive device is not increased by the shutter opening / closing mechanism.

FIG. 38 is a view showing a state immediately before the loading of the disk cartridge 6 in the cartridge holder 3 is completed. 91 is a sensor, 91a is an A / B surface discriminating section, and 91b is a cartridge insertion / shutter opening / closing confirmation. Department,
Reference numeral 92 denotes a lock member, and portions corresponding to the above-described drawings are denoted by the same reference numerals.

In the figure, a shutter holding member 52 and a sensor 9 are provided at the back of the cartridge holder 3 (FIG. 34).
1 is provided. When the loading is completed, the shutter 11 is almost fully opened in the disk cartridge 6, and when the disk cartridge 6 is further pushed into the cartridge holder 3, the shutter 11 is fully opened, and the leading end of the disk cartridge 6 is moved to the shutter holding member. At the same time, the lock member 92 engages with the notch 6 a provided on the side surface of the disk cartridge 6. At this time, the shutter holding member 52 regulates the loading position of the disk cartridge 6, and at the same time, holds the shutter 11 in the fully opened state. 36, the slider 22 of the shutter 11 is pushed by the pins 4a and 5a of the opening and closing arms 4 and 5, as described with reference to FIG.
When a and 5a come off the slider 22, the shutter 11
Automatically moves in the closing direction, and damages the optical head. The shutter holding member 52 prevents such an accident.

The sensor 91 includes an A / B surface discriminating portion 91a and a cartridge insertion / shutter open / close confirmation portion 91b. The A / B surface discriminating portion 91a inserts the disk cartridge 6 into the cartridge holder 3 with the A surface as the upper surface, for example. In this case, the shutter 11 has a rod that is pushed by a connecting surface that connects the respective surfaces of the shutter 11 that is fully opened. When the disk cartridge 6 is inserted into the cartridge holder 3 with the surface B facing upward, the moving direction of the shutter 11 is reversed, so that the rod of the A / B surface discriminating section 91a is not pushed. Thus, the A surface and the B surface of the disk cartridge 6 are determined.

Cartridge insertion / shutter open / close confirmation section 9
1b checks with the shutter holding member 52 whether the disk cartridge 6 has been loaded normally and whether the shutter 6 has been fully opened. When the shutter 6 is fully opened, the disc cartridge 6 is correctly positioned on the shutter holding member 52, whereby the rod of the cartridge insertion / shutter open / close confirmation section 91b is pushed,
Although it is confirmed that the disk cartridge 6 has been correctly loaded by fully opening the shutter 11, if the loading is performed without the shutter 11 being fully opened, the portion of the leading end portion of the disk cartridge 6 facing the shutter holding member 52 will be closed by the shutter. 11, the shutter holding member 52 cannot support the distal end member of the disk cartridge 6, and the insertion amount of the disk cartridge 6 is insufficient. For this reason, the rod of the cartridge insertion / shutter open / close confirmation section 91 b is not pushed by the tip end surface of the disc cartridge 6. When the disc cartridge 6 is correctly loaded, the rod of the cartridge insertion / shutter open / close confirmation section 91b is pushed by the tip end face of the disc cartridge 7 'regardless of which of the A and B faces is the upper face. In this way, it is confirmed whether the disc cartridge 6 has been correctly loaded.

Cartridge insertion / shutter release confirmation section 9
If it is confirmed by 1b that the loading of the disk cartridge 6 has been correctly completed, the auto loading function (not shown) starts to operate. The determination result of the A / B surface determination unit 91a is displayed on a display unit or the like.

FIG. 39 shows a state in which the disk cartridge 6 is supported by the shutter holding member 52. FIG. 39 (a) is a plan view, and FIG. 39 (b) is a section line X-
Sectional view as viewed from X ', and portions corresponding to the above-mentioned drawings are denoted by the same reference numerals.

In the figure, the disk cartridge 6 is provided on both sides thereof with a reinforcing portion 27 recessed from the case surface between the window hole 10 and the case front end surface. Are formed to be the same as or slightly thicker than the upper and lower surfaces of the head insertion portion 35 of the slider 22, respectively. Therefore, the thickness of the reinforcing portion 27 and the slider 2
The thickness of the head insertion portion 35 of the disk cartridge 6
Thinner than the body case thickness.

The width of the shutter holding member 52 is formed sufficiently smaller than the width of the window hole 10, and the distance between the upper piece 52 a and the lower piece 52 b of the shutter holding member 52 is such that the head of the slider 22 in the disk cartridge 6 is inserted through the head. The thickness is set to be slightly larger than the thickness of the portion 35 and the reinforcing portion 27.

When the disk cartridge 6 is inserted into the cartridge holder 3 while the shutter 11 is opened,
The head insertion portion and the reinforcing portion 27 of the slider 22 fit into the shutter holding member 52, and the slider 22 comes into contact with the connecting piece 52c. Thus, the loading position of the disk cartridge 6 is set. When the position of the disk cartridge 6 is set in this manner, the upper piece 52a of the shutter holding member 52 comes close to and opposes the upper shutter plate of the shutter 11, and the lower piece 52b comes close to the lower shutter plate of the shutter 11. Face each other. Thus, even if the pins 4a and 4b of the opening / closing arms 4 and 5 are disengaged from the pin engagement portion 37a of the slider 22 in the shutter 11 that is fully open, the shutter 11 can move the upper piece 52 of the shutter holding member 52.
a, it abuts against the lower piece 52b and is held in a fully opened state.

As shown in FIG. 40, during loading,
When the disc cartridge 6 is in the state of 6 (a) to 6 (b)
The shutter 11 opens in the direction of arrow D while moving in the direction of arrow E until the state shown in FIG. 4B. The upper right corner of the shutter 11 moves in the direction of arrow D while moving in the direction of arrow E, and its trajectory is indicated by arrow 94. It becomes as shown by. This trajectory 94 crosses the reinforcing portion 27 of the disk cartridge 6 and the slider 22 of the shutter 11 immediately before the loading of the disk cartridge 6 is completed. At this time, the reinforcing portion 27 and the head insertion portion 35 of the slider 22 are moved by the shutter. It is fitted into the holding member 52.

In FIG. 40, reference numeral 95 denotes the movement locus of the pin 4a of the opening / closing arm.

In the disk drive of the second embodiment, a through hole 3d is opened in the top plate 3c of the cartridge holder 3, and when the disk cartridge 6 is inserted to the position where the insertion of the cartridge holder 3 is completed, the opening / closing arm 4, 5
The opening / closing arms 4 and 5 do not overlap with any portion of the window hole 10 opened in the cartridge case.
Since the shape, arrangement, and rotation range of the disk drive are set, a disk drive of a type in which an external magnetic field or the like is disposed on the upper surface side of the disk cartridge 6 through a through hole, such as a magneto-optical disk drive, is also used. There is no hindrance to the playback operation.

Hereinafter, other examples of the disk drive device according to the present invention will be listed.

In each of the above examples, the opening and closing arms 4 and 5 are set on the upper surface of the top plate 3b of the cartridge holder 3.
As shown in FIG. 41, the shutter opening / closing arms 4 and 5 can be set on the inner surface of the cartridge holder 3. In this case, in order to prevent the disk cartridge 6 from swaying in the cartridge holder 3, it is preferable to provide the guide plate 101 below the arm 4, 5 setting portion.

In each of the above embodiments, no means for preventing vibration and deformation of the open / close arms 4 and 5 is provided. However, as shown in FIG. And the opening and closing arms 4 and 5 can be pressed by the plate 102.

In each of the above examples, as shown in FIG. 37, the distal ends of the open / close arms 4 and 5 are set at the same height with respect to the cartridge holder 3, and the open / close arms 4 and 5 Although the pins 4a and 5a of the same length are provided at the tips, as shown in FIG. 43, the tips of the open / close arms 4 and 5 are set at different heights with respect to the cartridge holder 3, and Pins 4 of different lengths at the tip of 4, 5
a, 5a can also be provided.

In each of the above examples, the 37th
As shown in the figure, pins 4a and 5a are provided at the distal ends of the open / close arms 4 and 5 and extend to the back side of the slider 22,
The pins 4a, 5a are brought into contact with the entire end face of the slider 22, but as shown in FIG. 44, the pins 4a, 5a
And the pins 4a,
5a can also be made to abut. In each of the above embodiments, the wide pin engaging portion 3 is provided on the end face of the slider 22.
7a, the pins 4a, 5a
And the length of engagement between the slider 4 and the slider 22 can be made sufficiently large, and the inconvenience of the pins 4a and 5a detaching from the slider 22 during driving hardly occurs.

Further, the present invention relates to a shutter holding member provided in a disk drive, and the structure of other parts of the disk drive and the structure of the disk cartridge are not limited to those described above. Absent.

For example, in each of the above examples, the slider 2
Although the rear surface portion 32 and the connecting portion 33 are formed over substantially the entire length of the slider 22, the rear surface portion 32 and the connecting portion 33 may be formed only at both ends of the slider 22, as shown in FIG. When the slider of this example is used, as shown in FIG. 46, it is possible to use the cartridge case 21 in which the slider insertion holes 29 are opened only on both side portions of the cartridge via the reinforcing portion 27.

Further, as shown in FIG. 47, the slider 2
A stopper 103 and a guide portion 104 are protruded from both ends of the cartridge 2 in the longitudinal direction thereof, and the front end of the stopper 103 abuts on a joining wall 23 formed in the cartridge case 21 to close the window hole 10. The setting position of the shutter 11 at the time can also be regulated.

Further, as shown in FIG. 48, the slider 2
The position of the shutter 11 when the window hole 10 is closed is regulated by abutting the projection 2 on the inner surface of the cartridge case 21, instead of the projection 2 on the joining wall 23 of the cartridge case 21. You can also do so.

In each of the above embodiments, the shutter 11 is held at the fully open position by the shutter holding member 52. However, as shown in FIG. 49, the shutter 11 of the front edge 9 of the cartridge case 21 When the pin 4a or 5a moves to the fully opened position, the pin fitting recess 106 is recessed at the portion where the pin 4a or 5a moves, and the pin 4a or 5a is dropped into the pin fitting recess 106, whereby the shutter 1 is moved.
1 can be held in the fully open position.

In each of the above embodiments, two opening / closing arms 4 and 5 are provided. However, as shown in FIG. 50, one opening / closing arm can be used to open and close the shutter.

In each of the above examples, the shutter 11
A locking claw 30 is formed on the slider 22
The shutter 11 and the slider 22 are integrated by engaging with a concave portion 40 formed in the shutter mounting portion 36 of the shutter 11, but as shown in FIG.
c, a screw insertion hole 107 is opened.
By screwing the screw inserted into the slider 22 to the slider 22, the shutter and the slider 22 can be integrated.

In each of the above examples, the disk cartridge 6 is inserted to the innermost part of the cartridge holder 3 and the shutter 11 provided on the disk cartridge 6 is inserted.
Is fully opened, both of the two opening / closing arms 4 and 5 have window holes 1 opened in the disc cartridge 6.
The shape of the open / close arms 4, 5 so that they do not overlap with 0,
The arrangement, the rotation range, and the like were set. However, as shown in FIG.
A part of 5 may overlap with a part of window hole 10. The disk drive of the present example can be used as a disk drive for a write-once optical disk or a phase-change optical disk, for example, in which an optical head is set only on the side opposite to the open / close arm setting side via the disk cartridge 6. . If the overlapping portion between the two opening / closing arms 4 and 5 and the window hole 10 is limited to only the insertion portion of the turntable 1, the optical head and the external magnetic field are set on both sides via the disk cartridge 6. And a disk drive for a magneto-optical disk.

In addition, the shape and arrangement of the cartridge holder 3, the arms 4 and 5, the pins 4a and 5a, etc. are not limited to the positions shown in the drawings, and are within the scope that does not change the gist of the present invention. It can be changed as appropriate. Further, the disk drive device described in this specification can be applied to a magnetic disk drive device in addition to an optical disk drive device. That is, when the present invention is applied to a magnetic disk drive, the directionality of the magnetic disk cartridge with respect to the drive is lost, and even if the front or back surface is inserted into the drive with a specific direction, the information can be read. Since recording / reproduction can be performed, the operation of inserting the magnetic disk cartridge can be facilitated, and damage to the head and the magnetic disk due to erroneous insertion can be prevented.

[0126]

As described above, in the disk drive device of the present invention, the shutter holding member for holding the shutter opened by the opening / closing arm at the predetermined opening position is provided in the cartridge holder. Even when the engagement with the arm is illegally released, the shutter and the shutter holding member can be engaged to prevent the shutter from moving in the closing direction, thereby preventing the shutter and the head device from being destroyed. Thus, the earthquake resistance of the disk drive device can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disk drive device to which a disk cartridge according to the present invention is applied.

FIG. 2 is a plan view of the disk drive device.

FIG. 3 is a side view of the disk drive as viewed from a direction in which the disk cartridge is inserted.

FIG. 4 is a side sectional view of the disk drive device.

FIG. 5 is an explanatory diagram showing a force acting on an arm.

FIG. 6 is a graph showing a relationship between an arm angle and a loading force.

FIG. 7 is a perspective view showing a first example of a shutter holding member.

FIG. 8 is a perspective view showing a second example of the shutter holding member.

FIG. 9 is a perspective view showing a third example of the shutter holding member.

FIG. 10 is a perspective view showing a fourth example of the shutter holding member.

FIG. 11 is a perspective view showing a fifth example of the shutter holding member.

FIG. 12 is a perspective view showing a sixth example of the shutter holding member.

FIG. 13 is a main part plan view showing an engagement position of a shutter holding member according to a sixth example.

FIG. 14 is a main part plan view showing an engagement position of a shutter holding member according to a sixth example.

FIG. 15 is a perspective view showing a seventh example of the shutter holding member.

FIG. 16 is a sectional view showing a fixing portion of a shutter holding member according to a seventh example.

17 is a front view of the fixing unit shown in FIG.

FIG. 18 is a perspective view of an engagement pin applied to a shutter holding member according to a seventh example.

FIG. 19 is a perspective view showing an eighth example of the shutter holding member.

FIG. 20 is a perspective view showing a ninth example of the shutter holding member.

FIG. 21 is a perspective view showing a tenth example of a shutter holding member.

FIG. 22 is a perspective view of a disk cartridge according to the present invention.

FIG. 23 is a plan view of a lower half.

FIG. 24 is a sectional view of a lower half.

FIG. 25 is a front view of the lower half.

FIG. 26 is a front view of a cartridge case and a disk cartridge.

FIG. 27 is a perspective view of a shutter.

FIG. 28 is a side view of the shutter.

FIG. 29 is a side view of the slider.

FIG. 30 is a front view of the slider.

FIG. 31 is a plan view of a slider.

FIG. 32 is an explanatory diagram of the operation of the disk drive device according to the first example.

FIG. 33 is an explanatory diagram of the operation of the disk drive device according to the first example.

FIG. 34 is a perspective view of a disk drive device.

FIG. 35 is a plan view of the disk cartridge.

FIG. 36 is an explanatory diagram of the operation of the opening / closing arm.

FIG. 37 is a front view showing an engaged state between a pin and a disk cartridge.

FIG. 38 is a perspective view showing an engagement state between the disk cartridge and related components at the innermost part of the cartridge holder.

FIG. 39 is an explanatory diagram showing an engagement state between a shutter and a shutter holding member.

FIG. 40 is a diagram illustrating the operation of a pin and a shutter.

FIG. 41 is a front view of the cartridge holder.

FIG. 42 is a front view of the cartridge holder.

FIG. 43 is a front view showing the engaged state of the disk cartridge and the pin.

FIG. 44 is a front view showing the engaged state of the disc cartridge and the pin.

FIG. 45 is a plan view of the slider.

FIG. 46 is a front view of the cartridge case.

FIG. 47 is a main part plan view showing an engaged state between the slider and the cartridge case.

FIG. 48 is a main part plan view showing an engaged state between the slider and the cartridge case.

FIG. 49 is a plan view showing an engaged state between the disk cartridge and the arm.

FIG. 50 is a perspective view of a cartridge holder.

FIG. 51 is a perspective view of a shutter.

FIG. 52 is a cross-sectional view showing a positional relationship between an arm and a window hole, as viewed from a plane direction.

FIG. 53 is a perspective view of a cartridge holder.

FIG. 54 is an explanatory diagram of the operation of the opening / closing arm.

FIG. 55 is an explanatory diagram of the operation of the opening / closing arm.

FIG. 56 is a plan view showing another example of the disk cartridge.

[Explanation of symbols]

 Reference Signs List 3 cartridge holder 3a disk cartridge stop end 3b top plate 4,5 opening / closing arm 6 disk cartridge 7 optical disk 9 front edge 10 window hole 11 shutter 18 shutter holding plate 21 cartridge case 22 slider 31 front part 32 rear part 33 connecting part 34a, 34b concave groove 35 head insertion part 36 shutter mounting part 37 taper part 37a pin engaging part 38, 39, 40 concave part 52 shutter holding member

Claims (1)

[Claims] 1. A cartridge holder for detachably holding a disk cartridge provided with a shutter for opening a window hole opened in a cartridge case by sliding in one direction from an opening / closing position, and being rotatable with respect to the cartridge holder. And when the disk cartridge is inserted into the cartridge holder, the opening / closing arm that moves the shutter in the opening direction by the insertion force of the disk cartridge. A disk drive device, wherein a shutter holding member for holding a shutter opened by the opening / closing arm at a predetermined open position when inserted to a position is provided in the cartridge holder.