JP3002465B2 - Disc cartridge - 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 cartridge in which a disk-shaped recording medium is rotatably stored, and more particularly, to a slider which slides in a direction in which a shutter is mounted to open and close a window hole formed in a cartridge case. Related to the configuration.

[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. 52 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. The open / close arms 4 and 5 are rotatably attached to the side of the cartridge holder 3 where the disk cartridge 2 is opened near the disk cartridge stop end, and the pins 4a and 5a attached to the tips of the arms 4 and 5 3 is provided on the disk cartridge insertion path. The opening / closing arms 4 and 5 are constantly urged by a spring member (not shown) in a direction of ejecting the disk cartridge 6 from the cartridge holder 3, and are turned inward (indicated by arrows A and B) by the insertion force of the disk cartridge 6. When the disc cartridge 6 is ejected from the cartridge holder 3 and the disc cartridge 6 is ejected from the cartridge holder 3, the disc cartridge 6 is automatically returned to the original position by the elastic force of the spring member.

On the other hand, as shown in FIGS. 53 and 54, a disk cartridge 6 applied to this optical disk drive has a substantially central portion of 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 formed in a portion extending from the front edge 9 to the front edge 9. A shutter 11 capable of opening and closing the window 10 is slidably provided along the front edge 9. Is being worn.
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. The entry of foreign matter from the optical disk 7 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. 53, 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. Is done.

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 a 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. 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.

As another example of a disk cartridge which has been conventionally studied, as shown in FIGS. 55 (a) and 55 (b), a notch 19 is formed on the front surface of the shutter 11, and In some cases, the shutter 11 is opened and closed by engaging the pin 5 a or 5 b with the notch 19.

[0013]

By the way, in a disk cartridge for an optical disk, the width W of the window hole 10 is formed larger than that of a disk cartridge for a magnetic disk (floppy disk) of the same size.
The operation amount of the shutter 11 that opens and closes 0 also increases.

In order to increase the operation amount of the shutter 11, the length L of the arms 4 and 5 is increased, and a line EE connecting the fulcrums 4b and 5b of the arms 4 and 5 and the pins 4a and 5a. It is necessary to reduce the angle θ (hereinafter, this angle is referred to as an initial setting angle) between the angle θ and the insertion direction FF of the disk cartridge.

However, if the length L of the arms 4 and 5 is increased, a disadvantage arises when the disk drive becomes large. When the initial setting angle θ is reduced, the impact force when the front edge 9 of the disk cartridge 6 abuts against the pins 4a, 5a increases, and the opening / closing operation of the shutter 11 becomes heavy, which deteriorates usability. Such inconveniences occur.

If the initial setting angle θ is increased, the inconvenience as described above can be avoided or alleviated.
Accordingly, inconveniences such as an increase in the size of the disk drive device and a decrease in the operation amount of the shutter 11 occur, so that it is difficult to apply to a small optical disk drive device.

In the magnetic disk drive,
An apparatus has been proposed in which an arm is set on the upper surface of the cartridge holder 3 to reduce the size of the apparatus (for example, Japanese Patent Laid-Open No. 59-2269). There is no such device that can be used and cannot be diverted to an optical disk drive that drives a double-sided recording type optical disk.

In FIGS. 55 (a) and 55 (b), the opening and closing arms 4 and 5 have to intersect during the opening and closing operation of the shutter. It is difficult to increase the size, and there is a disadvantage that the engagement between the notch 19 and the pins 4a and 5a becomes insufficient and the engagement between the notches 19 and the pins 4a and 5a is easily released during the shutter opening / closing operation. In particular,
In the case of a small-sized disk cartridge in which the size of the notch 19 is limited, such inconvenience is remarkable.
It is hard to adopt practically.

In order to solve such inconveniences, the inventors of the present invention disclose a disk cartridge provided with a shutter which slides in one direction from a closed position to open window holes respectively opened on an upper surface and a lower surface on a cartridge case. A cartridge holder for detachably holding the disk cartridge, and rotatably attached to the cartridge holder, when the disc cartridge is inserted into the cartridge holder,
A disk drive device having an opening / closing arm for moving the shutter in the opening direction by the insertion force, wherein a base end of the opening / closing arm is attached to a disk cartridge insertion opening side of a top plate constituting the cartridge holder; The tip of the opening / closing arm is disposed in the depth direction of the cartridge holder, and the pin for driving the shutter provided at the tip of the opening / closing arm is located outside the pin engagement portion of the disk cartridge when the shutter is closed. Invented a disk drive device characterized by being arranged in a disk drive.

According to the disk drive device having such a configuration,
Since the opening and closing arm is mounted on the cartridge holder,
The planar size of the disk drive device can be reduced. Further, since the base end of the opening / closing arm is provided on the side of the disk cartridge insertion opening of the cartridge holder and the front end thereof is arranged in the depth direction of the cartridge holder, the shutter driving force can be reduced.

An object of the present invention is to provide a structure of a disk cartridge suitable for a disk drive device having such a structure, particularly, a structure of a slider.

[0022]

According to the present invention, in order to achieve the above object, a window hole for inserting a head and a spindle is opened, and a predetermined step is formed in a portion facing the front end of the window hole. A disc cartridge comprising: a cartridge case having a reinforcing portion formed thereon; a slider slidably mounted on a front edge portion of the cartridge case; and a shutter attached to the slider and opening and closing the window. The slider includes a front portion formed with a head insertion portion that is moved to the front of the reinforcing portion when the shutter is opened, a shutter mounting portion, and a pin engaging portion, and a narrow connecting portion extending from the front portion to the rear side. And a rear surface portion provided therebetween, and the rear surface portion is separately installed on both ends of the front surface portion, and opposed inner ends of these two rear surface portions are Head insertion portion position or corresponding to both ends of, or characterized in that arranged outside the opposite ends of the head insertion portion.

According to the above construction, a reinforcing portion having a predetermined step is formed at a portion facing the window hole of the cartridge case, and a head insertion portion narrower than the shutter mounting portion and the pin engaging portion is formed on the front surface of the slider. The head device can be introduced into the head insertion window hole from the front of the disk cartridge through the step of the head insertion portion and the reinforcing portion, and the head insertion window hole can be inserted vertically from the disk cartridge. As compared with the case where a head device is introduced in the first embodiment, the structure of the head drive mechanism can be simplified and the disk drive device can be made thinner. In addition, the rear surface of the slider is separately installed at both ends of the front surface, and the opposing inner ends of the two rear surfaces are located at positions corresponding to both ends of the head insertion portion, or of the head insertion portion. Since it is located outside of both ends, a wider rear surface is not formed on the back side of the narrow head insertion part,
Since the set interval between the upper and lower head devices can be made smaller, it is possible to further reduce the thickness of the disk drive device.

In the disk cartridge of the present invention, since the slider has the above-mentioned structure, as shown in FIG.
Is inserted, one of the pins 4a contacts the outer surface of the pin engaging portion 37a of the slider 22 at the closed position, and the other pin 5a contacts the front edge of the disk cartridge on the shutter opening side. You.

When the disc cartridge is further inserted, the arms 4 and 5 are driven inward 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 up to the innermost portion 3a of the cartridge holder 3, the shutter 11 is fully opened as shown in FIG.
, The shutter holding member 52 is engaged. At the same time, the disk cartridge 6 is detected by the sensor 51.
Is detected to the predetermined position and the shutter 11 is completely opened, and a drive source (not shown) is driven to lower the cartridge holder 3 toward the turntable 1. As a result, the optical disk 7 is mounted on the turntable 1, and the recording / reproducing operation becomes possible.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a disk cartridge according to the present invention will be described with reference to FIGS. In these figures, members or portions corresponding to the members or portions shown in FIGS. 51 to 53 are denoted by the same reference numerals.

As shown in FIG. 22, the disk cartridge 6 is mainly composed of a hard plastic cartridge case 21, 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, 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.

In the lower half 8b, as shown in FIG.
An elongated window hole 10 is opened from a substantially central portion corresponding to the rotation center P of the optical disk 7 toward the front edge 9 (side edge on the side of insertion into the disk drive), and left and right near the rear edge 9a. Openings 16a and 17a for the erroneous erasure prevention mechanism are formed symmetrically on both sides. 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 on the outer peripheral edge of the lower half 8b except for the front edge portion 9. A partition 24 having the same height as the joining wall 23 is provided in a ring shape on a circumference centered on the rotation center P of the optical disk 7, thereby forming a storage space 24 a for the optical disk 7. Further, the window hole 10
And a disk receiver 1 lower than the joining wall 23 and the partition 24 on the circumference around the rotation center P
0a is set up 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, 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.
The reinforcing portion 27 recessed from the surface of the guide rail 2
4 and is integrally formed in the same plane as the tip portion.

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
b, as shown in FIGS. 26A and 26B,
A slider insertion hole 29 is formed in a straight line at the joint of the front edge 9.

Next, the structure 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 to form an upper piece 11a having a length capable of simultaneously covering the entire window hole 10. The thickness S of the lower piece 11b and the shutter setting portion of the cartridge case 8
And a front piece 11c having a width substantially equal to that of the upper piece 11a and the lower piece 11b, and a locking claw 30 is formed to be bent inward at a portion close to the front piece 11c.

As shown in FIG. 29, the slider 22 is composed of a wide front portion 31, a narrow rear surface portion 32, and a connecting portion 33 for connecting the front portion 31 and the concave portion 34a, formed by these portions. The guide rail 25 can be provided inside 34b. As shown in FIGS. 30 and 31, the front portion 31 has a length 1 slightly larger than the width W of the window hole 10 and a width T ₂ which is the same as or smaller than the thickness T ₁ of the reinforcing portion 27. , A shutter mounting portion 36 having a width substantially equal to the inner width of the shutter 11, a taper portion 37 formed at a tip end of the shutter mounting portion 36, And a pin engaging portion 37a formed on the opposite side to the shutter mounting portion 36 via the portion 35. Pin engaging portion 37a
Are formed to have substantially the same width as the shutter mounting portion 36.

[0039] Thus, the slider 22, to form the upper half 8a and the head insertion portion 35 of the thickness T ₁ equal to or or than this narrow width T ₂ of the lower half 8b reinforcing portion 27 formed in the When the shutter 11 is opened,
The reinforcing portion 27 and the head insertion portion 35 coincide with each other, and a window hole 10 for inserting a head from the front of the disk cartridge 6 through a step between the head insertion portion 35 and the reinforcing portion 27.
A head device (not shown) can be introduced into the disk cartridge 6, and the configuration of the head drive mechanism (not shown) can be simplified compared to the case where the head device is introduced into a window hole for inserting the head from above and below the disk cartridge 6. The drive device can be made thinner.

On the front, upper, and lower surfaces of the shutter mounting portion 36, recesses 38 in which the shutter 11 can be housed are formed. 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.

As shown in FIG. 31, the rear portion 32 is provided separately on both ends of the front portion 31. The rear portion provided at the end of the front portion 31 on the taper portion 37 side has a rear portion. , A spring locking portion 32b is protruded. in this way,
If the rear surface portion 32 is separately installed on both end sides of the front surface portion 31, no wider rear surface portion is formed on the rear side of the narrow head insertion portion 35, or if the narrow head insertion portion 35 is Even if a wider rear surface portion is formed on the back side, the range can be limited, so that the set interval between the upper and lower head devices can be made smaller,
It is possible to further reduce the thickness of the disk drive device.

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. In addition, the slider 22 has the tapered portion 3
7 toward the opening movable side of the shutter 11,
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 superposed on the upper and lower surfaces of the cartridge case 21, respectively, and close the window holes 10 opened in the upper half 8a and the lower half 8b. The leading end of the shutter 11 is brought into close contact with the cartridge case 21 by an elongated pressing plate 18 attached to the cartridge case 21.

Step 25 for stopping shutter shown in FIG.
“a” is formed in such a positional relationship that when the end face of the slider 22 abuts, the side of the shutter 11 does not abut the end face of the recess 28. Thereby, the shutter 11
Dust due to collision between the cartridge case 21 and the cartridge case 21 can be reduced.

In the above-described embodiment, as shown in FIG. 26, a series of slider insertion holes 29 covering almost the entire width of the disk cartridge 6 are formed at the joint between the upper half 8a and the lower half 8b. Rear part 32
45 are formed separately on both ends of the front surface portion 31, and as shown in FIG.
7, the slider insertion holes 29 are provided only on both side portions thereof.
Can also be established.

In the above embodiment, as shown in FIG. 31, the inner end of the rear surface portion 32 formed on the pin engaging portion 37a side of the slider 22 has the head insertion portion 35 formed on the front surface portion 31. Although the rear surface portion 32 is formed so as to be inside the outer end, the gist of the present invention is not limited to this. As shown in FIGS. 46 and 47, the inner end of the rear surface portion 32 is The rear surface portion 32 can be formed so as to be outside the outer end of the head insertion portion 35 formed on the front portion 31, or the inner end of the rear surface portion 32 can be formed on the head insertion portion 35 formed on the front surface portion 31. It is also possible to form the rear surface portion 32 so as to coincide with the outer end of the rear surface. In this case, the wide rear surface portion 32 does not overlap the narrow head insertion portion 35, so that the head device can be more easily introduced.

Further, in the above-described embodiment, as shown in FIG. 31, the outer end of the rear surface portion 32 of the slider 22 is set at the same position as the end portion of the front surface portion 31 or is located inside the end portion of the front surface portion 31. , But as shown in FIGS. 46 and 47,
The outer end of the rear surface part 32 can also be made to protrude more outward than the end part of the front surface part 31. In the example of FIG.
47 protrudes outward from both ends of the front part 31, and in the example of FIG.
Only the outer end 2 protrudes outward from the end of the front part 31. The slider 22 shown in FIG. 46 is configured such that the front end of the rear surface portion 32 formed on the pin engagement portion 37a side abuts on the joining wall 23 formed on the cartridge case 21 so that the shutter 11 is closed when the window hole 10 is closed. The setting position can be regulated. In addition, the slider 22 shown in FIG. 47 is configured such that the front end of the rear surface 32 formed on the pin engagement portion 37a side is brought into contact with the protrusion 105 formed on the inner surface of the cartridge case 21 so that the window hole 10 is closed. Shutter 11
Can be restricted. In addition, when one or both of the rear surfaces of the slider protrude outward from the longitudinal end of the front surface, the length of contact between the guide rail 25 and the slider 22 can be increased. Can also improve the sliding stability.

Next, a first embodiment of a disk drive device for recording and reproducing information by mounting the disk cartridge of the present invention.
An example will be described with reference to FIGS.

FIG. 1 is a perspective view showing the vicinity of a cartridge holder.
FIG. 2 is a plan view of the cartridge holder, FIG. 3 is a side view of the cartridge holder as viewed from a disk cartridge insertion direction, and FIG. 4 is a cross-sectional view of the cartridge holder as viewed from a side direction. In these figures, parts corresponding to those in FIG. 52 described above 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.

As shown in FIGS. 1 and 2, the open / close arms 4 and 5 are combined so as to intersect symmetrically with respect to the center line XX of the head insertion hole 3d, and connect the support shafts 4b and 5b. The cartridge holder 3 is rotatably mounted on the insertion opening side, and the tip end 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.

When each of the open / close arms 4 and 5 is driven to the innermost position, as shown by a dashed line in FIG. 2, the window holes 10 of the disk cartridge inserted into the cartridge holder 3 and the aforementioned 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 FIG. 3 and FIG. Are configured to cross each other.

Pins 4a and 5a are attached to the distal 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 F ₁ , 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−
When the angle between E and the line segment FF is θ, and the friction coefficient when the pin 4a (5a) slides along the front edge of the disk cartridge 6 is μ, the loading force F ₁ is given by the following equation. It is represented by

F 1 = {tan θ / (tan θ−μ)} × {(Fs / tan θ) + (Fp / sin θ)} For example, in the case of a small optical disk drive, it is necessary 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 F ₁ in the optical disk drive obtained by the above equation. Experience, since the loading force F ₁ is not suitable for practical use becomes poor and feeling becomes more 5N, from this graph, the angle θ of the arm not have to use a range of more than 29 degrees, in order that It can be seen that the set angle of the arm when not used 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 located on the disk cartridge stop end 3a side of the cartridge holder 3. And a shutter holding member 52 for holding the shutter 11 opened by the opening arm 4 or 5 at a predetermined opening position.

The sensor 51 is provided in 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. The side surface of the shutter holding member 52 is formed in a substantially U-shape including an upper piece 52a, a lower piece 52b and a connecting piece 52c for connecting these. A chamfer 53a for facilitating the insertion of the head insertion portion 35 of the slider 22 is provided at the tip of the inner surface of the upper piece 52a and the lower piece 52b.
The overall height H of the shutter holding member 52 is equal to or smaller than the thickness S of the cartridge case 21.
The interval W between the inner surfaces of the upper piece 52a and the lower piece 52b is
The slider 22 is formed to be slightly larger than the thickness of the head insertion portion 35. When the shutter 11 is opened to the fully open position, the shutter holding member 52 of this example is set at a position where it can engage with an end face formed between the head insertion portion 35 of the slider 22 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 formed on the side portions of the upper piece 52a and the lower piece 52b. Have been. 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, the upper piece 52a and the lower piece 52b are provided with chamfers 53c at both ends thereof. Have been. 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.
5 and an upright piece 56 are formed in an L-shape. 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 vertically protruding from the mounting portion 57. It is configured. As shown in FIG. 13, the shutter holding member 52 of this example engages with an end face formed between the head insertion portion 35 of the slider 22 and the shutter mounting portion 36 when the shutter 11 is opened to the fully open position. 14 and, as shown in FIG. 14, a through hole 59a is formed in the front piece 11c of the shutter 11, and the shutter mounting portion 36 of the slider 22 is located at a position corresponding to the through hole 59a. The recess 59b may be recessed, and the locking portion 58 may be inserted into the recess 59b. FIG. 15 shows the shutter holding member 5.
FIG. 14 is a perspective view showing a seventh example of the second embodiment, and includes a fixing portion 61 fixed to the cartridge holder 3, an engagement pin 62 attached to the fixing portion 61 so as to project or be inserted therein.
A spring member 63 is provided between the fixing portion 61 and the engaging pin 62, and constantly biases the engaging pin 62 in a direction protruding from the fixing portion 61. 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, and a hole is formed in a peripheral surface of the hole 64. An introduction line 65a communicating with the opening of the hole 64 and extending in the axial direction of the hole 64, and a connection groove 65 extending in the circumferential direction of the hole 64 from the end of the introduction groove 65a.
b, and a guide groove 65c extending in the axial direction of the hole 64 from the end of the connection groove 65b. 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 base end of the engaging pin 62 is
As shown in FIG. 7, 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 partially provided at the tip of the engaging pin 62. 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 attached to the fixing portion 61, and the fixing portion 61. And a spring member 63a which is stretched between the engaging arm 70 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 perspective view showing a tenth example of the shutter holding member 52. In order to facilitate engagement with the slider 22, a rolling member 69b is provided at the tip of the engagement arm 70. Is set to protrude 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 concave portion 59b may be provided at a position corresponding to the through hole 59a, and the engaging pin 62 or the engaging arm 70 may be inserted into the concave portion 59b (see FIGS. 13 and 13). 14).

Hereinafter, the operation of the disk drive device configured as described above will be described with reference to FIGS. 32 and 33.

Before the disk cartridge is inserted, the cartridge holder 3 is separated from the turntable 1 as shown in FIG. 4, and the two pins 4a and 5a are They are spaced apart on both sides. When the disc cartridge 6 is inserted into the cartridge holder 3, first, as shown in FIG.
And the other pin 5a contacts 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 part 3a of the cartridge holder 3, the shutter 11 is fully opened as shown in FIG.
, 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 becomes possible.

In the disk drive of the above construction, 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 plane size of the disk drive can be reduced as compared with the case where the arms 4 and 5 are arranged on the side surface of the cartridge holder 3.

Further, two open / close arms 4 and 5 are crossed,
The base end of the cartridge holder 3 is rotatably attached to the insertion port side of the cartridge holder 3, and the tip end 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 part of the cartridge holder 3 and the shutter 11 (slider 22) opened to the fully open position is engaged, an improper vibration is 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 3d and the opening 2 are formed on the upper and lower surfaces of the cartridge holder 3, respectively, the optical head and the external magnetic field are applied to the optical disk 7 accommodated 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 embodiment of a disk drive apparatus for recording and reproducing information by mounting a disk cartridge according to the present invention will be described.
Examples will be described with reference to FIGS.

FIG. 34 is a perspective view of a disk drive according to the second example, in which 81 is a base, 82 is an outer wall, and 82a
Is a bag portion, 83 is a holder driving member, 83a is a cut, 84
Denotes a guide roller, 86 denotes a tension spring, 87 denotes a sensor, and other portions corresponding to those in 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 perpendicular 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 manner, the shutters can be opened by the pins 4a or 5a, regardless of whether the disk cartridge 6 is inserted into the openable arms 4 and 5 with the disk cartridge 6 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 disc 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).

Thus, the sensor (not shown) detects that the cartridge holder 3 has been lowered 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 disc cartridge 6 is ejected, the motor rotates with the user's eject 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. FIGS. 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. .

In the figure, window holes 10 are provided on both sides of the disk cartridge 6 so as to overlap each other (the B surface shown in FIG. 35B 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 that cover the window hole 10, and is normally formed by a spring member (not shown) in FIG.
As shown in (b), the window 10 is closed.

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 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 similarly to the disk cartridge shown in FIG.

Next, with respect to the disk drive of this embodiment,
The operation of the opening and closing arms 4 and 5 when the disk cartridge 6 according to the embodiment is loaded on the cartridge holder 3 will be described in further detail. FIG. 35 is a view showing the structure of the open / close arms 4 and 5 and the rotating state at the time of loading, and the portions corresponding to those in the preceding drawings are denoted by the same reference numerals.

In the figure, 6 (a) is 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 provided, 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. 37A shows the disk 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 heights of these tip portions are 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, the disk cartridge 6
When (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 rotates counterclockwise about the support shaft 4b. The opening / closing arm 5 rotates clockwise around 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 unreasonable rotational force is applied to the opening / closing arms 4 and 5, this may further rotate. 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 displaced from the window hole 10, and dust or the like may enter the disk cartridge 6 from the opening / closing arms 4 and 5 via the window hole 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 disc 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 open / close confirming section. ,
Reference numeral 92 denotes a lock member, and portions corresponding to the above-described drawings are denoted by the same reference numerals.

In the same drawing, a shutter holding member 52 and a sensor 91 are provided at the back of the cartridge holder 3 (FIG. 34).
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. 52 and the disk cartridge 6
The lock member 92 is engaged with the notch 6a provided on the side surface of the lock member 92. 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. Even in the fully opened state, as described with reference to FIG.
5 pin 4a, 5a, the slider 2 of the shutter 11
2 is pressed, but for some reason the pins 4a,
If the slider 5a comes off the slider 22, the shutter 11 moves in a direction to close automatically, and damages the optical head. The shutter holding member 52 prevents such an accident.

The sensor 91 includes an A / B side discriminating section 91a and a cartridge insertion / shutter open / close confirming section 91b. The A / B side discriminating section 91a inserts the disc cartridge 6 into the cartridge holder 3 with the A side 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 disc cartridge 6 has been correctly loaded by fully opening the shutter 11, if loading is performed without the shutter 11 being fully opened, a portion of the leading end of the disc cartridge 6 facing the shutter holding member 52 will be closed. 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 has a reinforcing portion 27 recessed from the case surface between the window hole 10 and the case front end surface on both sides thereof.
The reinforcing portion 27 is formed so that both surfaces thereof are 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 thickness of the head insertion portion 35 of the slider 22 are smaller than the thickness of the main body case of the disk cartridge 6.

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 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, while the disk cartridge 6 moves in the direction of arrow E from the state of 6 (a) to the state of 6 (b) during loading, the shutter 11 opens in the direction of arrow D. The upper right corner of the shutter 11
It moves in the direction of arrow D while moving in the direction of arrow E, and its trajectory becomes as shown by arrow 94. This trajectory 94 indicates the reinforcing portion 27 of the disk cartridge 6 and the slider 2 of the shutter 11 immediately before the loading of the disk cartridge 6 is completed.
2, but at this time, these reinforcing portions 27
And the head insertion portion 35 of the slider 22 are fitted into the shutter holding member 52.

In FIG. 40, reference numeral 95 indicates 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 formed 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 that records and reproduces information by mounting the disk cartridge of the present invention will be listed.

In each of the above examples, the opening / 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, the disk cartridge 6 is attached to the cartridge holder 3.
It is preferable to provide a guide plate 101 below the setting portions of the arms 4 and 5 in order to prevent rocking inside.

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

In each of the above examples, as shown in FIG. 37, the end portions 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 are set.
Although the pins 4a and 5a of the same length are provided at the tip of the cartridge 5, the tips of the opening and closing arms 4 and 5 are set at different heights with respect to the cartridge holder 3 as shown in FIG. Pins 4a and 5a having different lengths can be provided at the distal ends of the arms 4 and 5.

In each of the above examples, FIG.
As shown in (1), pins 4a and 5a extending to the back side of the slider 22 are provided at the distal ends of the open / close arms 4 and 5, and the pins 4a and 5a are brought into contact with the entire end surface of the slider 22. As shown in FIG. 44, the pins 4a and 5a are further shortened so that the pins 4a and 5a
Can be brought into contact with each other. In each of the above embodiments, the wide pin engaging portion 37a is provided on the end surface of the slider 22.
Is formed, the engagement length between the pins 4a and 5a and the slider 22 can be made sufficiently large, and the disadvantage that the pins 4a and 5a are detached from the slider 22 during driving is less likely to occur. .

Further, the present invention relates to the configuration of the slider provided in the disk cartridge, and the configuration of the other parts of the disk cartridge and the disk drive are not limited to those described above.

For example, in each of the above embodiments, the shutter 11 is held at the fully opened position by the shutter holding member 52. However, as shown in FIG. 48, the shutter 11 at the front edge 9 of the cartridge case 21 is fully opened. When the pin 4a or 5a is moved to the position, the pin fitting recess 106 is recessed in a 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.

Further, in each of the above examples, two opening / closing arms 4 and 5 are provided. However, as shown in FIG. 49, the shutter can be opened / closed by one opening / closing arm.

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.
The shutter and the slider 22 can be integrated by screwing a screw inserted into the screw insertion hole 107 into the slider 22.

In each of the above examples, the disc cartridge 6 is inserted to the innermost part of the cartridge holder 3 and the shutter 11 provided on the disc 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,
Although the arrangement, the rotation range, and the like were set, as shown in FIG.
In the fully opened state of the shutter, a part of the two opening / closing arms 4 and 5 may overlap with a part of the window hole 10. The disk drive device of this example can be used as a disk drive device for a write-once optical disk or a phase-change optical disk in which an optical head is set only on the side opposite to the opening / closing arm setting side via the disk cartridge 6. . In addition, two opening / closing arms 4 and 5 and a window hole 10 are provided.
If the overlapping portion is limited only to the insertion portion of the turntable 1, it can be used as a disk drive device for a magneto-optical disk in which an optical head and an external magnetic field are set on both sides via the disk cartridge 6. .

In addition, the shape and arrangement of the cartridge holder 3, the arms 4, 5 and the pins 4a, 5a can be changed as appropriate. Further, the disk drive described in this specification can be applied to a magnetic disk drive in addition to an optical disk drive. 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 / playback can be performed,
The work of inserting the magnetic disk cartridge is facilitated, and damage to the head and the magnetic disk due to incorrect insertion can be prevented.

[0131]

According to the disk cartridge of the present invention, a reinforcing portion having a predetermined step is formed at a portion facing the window hole of the cartridge case, and the shutter mounting portion and the pin engaging portion are formed on the front surface of the slider. Also formed a narrow head insertion portion, the head device can be introduced into the head insertion window hole from the front of the disk cartridge through the step of the head insertion portion and the reinforcing portion, and from the vertical direction of the disk cartridge. Compared with the case where the head device is introduced into the window hole for inserting the head, the configuration of the head drive mechanism can be simplified and the disk drive device can be made thinner. Also, the rear surface of the slider is separately installed on both ends of the front surface, and the opposing inner ends of the two rear surfaces are located at positions corresponding to both ends of the head insertion portion, or of the head insertion portion. Since it is arranged outside the both ends, a wider rear surface portion is not formed on the back side of the narrow head insertion portion, and the set interval between the upper and lower head devices can be further reduced, so that it is further improved. The disk drive can be made thinner.

[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 a 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 front view of the cartridge case.

FIG. 46 is a main part plan view showing an engagement state between the slider and 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 plan view showing an engagement state between a disk cartridge and an arm.

FIG. 49 is a perspective view of a cartridge holder.

FIG. 50 is a perspective view of a shutter.

FIG. 51 is a cross-sectional view showing a positional relationship between an arm and a window hole as viewed from a plane direction.

FIG. 52 is a perspective view of a cartridge holder.

FIG. 53 is an explanatory diagram of the operation of the opening / closing arm.

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

FIG. 55 is a plan view showing another example of the disk cartridge.

[Explanation of symbols]

 Reference Signs List 6 Disc cartridge 7 Optical disc 9 Front edge 10 Window hole 11 Shutter 18 Shutter holding plate 21 Cartridge case 22 Slider 31 Front face 32 Rear face 33 Connecting part 34a, 34b Groove 35 Head insertion part 36 Shutter mounting part 37 Taper part 37a Pin Engaging part 38, 39, 40 recess

Continuation of the front page (31) Priority claim number Japanese Patent Application No. 1-338166 (32) Priority date December 28, 2001 (1989.28.28) (33) Priority claim country Japan (JP) (31) Priority claim number 1-150155 (32) Priority date December 28, 2001 (1989.28.28) (33) Priority claiming country Japan (JP) (56) References JP-A-63- 103482 (JP, A) Hikaru 1-71366 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 23/03 G11B 23/033

Claims (1)

(57) [Claims] 1. A cartridge case in which a window hole for inserting a head and a spindle is opened, and a reinforcing portion having a predetermined step is formed in a portion facing a front end of the window hole, and a front edge of the cartridge case. A disk cartridge comprising a slider slidably mounted on the slider and a shutter mounted on the slider and opening and closing the window hole, wherein the slider is moved to the front of the reinforcing portion when the shutter is opened. A front portion in which an insertion portion, a shutter mounting portion, and a pin engaging portion are formed, and a rear surface portion provided through a narrow connecting portion extending from the front portion to the rear surface side, wherein the rear surface portion is formed. Separately installed at both ends of the front part, the opposed inner ends of these two rear parts are located at positions corresponding to both ends of the head insertion part or the head insertion part. A disc cartridge characterized by being arranged outside both ends of a passage portion.