JPH02187973A - Disk cartridge driving device - Google Patents

Abstract

PURPOSE:To read and write information in using a driving device main body for a large size by making an external form of an adapter of a cartridge to house a small-sized optical disk the same as a cartridge to house a large-sized optical disk. CONSTITUTION:For example, the driving device main body 3 capable of storing a 3.5 inch optical disk cartridge 1 and loading an adapter having the same external form with a 5.25 inch optical disk cartridge in size as well as external form is produced, whereas the cartridge 1 is composed of a cartridge case 4 molded of a hard synthetic resin, a metallic shutter 6 with its U-shaped side shape for opening and closing a head window 5 provided to this case 4 and the optical disk 7 housed rotatively in the case 4. Now, the shutter 6 is always energized in the direction of the window closing by a spring member, which is not shown in the figure, provided in the case 4. The adapter 2 is constitutive of an upper case 8, a lower case 9, a lid body 10, loader rail 11 and a shutter 17, corresponding to the two kinds of large and small cartridges to be loaded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a disk cartridge drive device in which, for example, a 3.5-inch optical disk cartridge can be attached to a device for a 5.25-inch optical disk cartridge. In particular, it relates to the cartridge adapter structure thereof.

[Conventional technology]

In recent years, the amount of information has increased enormously in many fields, and there is an increasing need to efficiently and centrally manage this information. For example, in a hospital, the contents (information) of each patient's medical record are recorded on separate recording media such as optical disk cartridges.
It is owned by an individual. A system is being studied and developed in which information is read from the recording medium in a hospital's centralized management system and is utilized for diagnosis, treatment, etc. of the patient.

In such a management system, the recording medium owned by an individual (patient) is a small optical disk cartridge, such as a 3.5-inch one, which is more convenient to carry and store. On the other hand, for hospitals, in order to record and process huge amounts of information from each patient, it is better to use large optical disc cartridges, such as 5.25 inches or even larger, 12 inches. be.

[Problem to be solved by the invention]

However, as mentioned above, the size of the optical disc cartridge is different between the one owned by an individual (patient) and the one used at the hospital. cannot be read by any recording/playback device. Therefore, there is a strong demand for the development of an adapter that allows a large-sized optical disc recording/playback device to read or write information even when a small-sized optical disc cartridge owned by an individual is installed.

The present invention has been made in view of these points, and an object of the present invention is to provide a disk cartridge drive device that can read information recorded on or write information to disk cartridges even if the disk cartridges have different sizes. purpose. Another object of the present invention is to provide a highly reliable positioning of a small-sized disk cartridge within a cartridge adapter.

[Means to solve the problem]

In order to achieve the above object, the present invention provides.

For example, a small-sized disk cartridge such as a 3.5-inch optical disk drive, and the small-sized disk cartridge are housed in a predetermined position.
．． A cartridge adapter that is the same size and has the same external shape as a large-sized disk cartridge such as a 25-inch optical disk cartridge, and a cartridge adapter that accommodates the small-sized disk cartridge are attached to the small-sized disk cartridge. The device is characterized by having a main body of the drive device configured so that only information can be written and read.

Further, in the present invention, preferably, the cartridge adapter includes an opening for inserting and removing a small-sized disk cartridge, and a positioning mechanism for positioning the small-sized disk cartridge inserted into the cartridge adapter at a predetermined position. This positioning mechanism has a spring member that presses the side end surface of the small-sized disk cartridge, and a pair of leaf springs that press portions near both sides of the flat portion of the small-sized disk cartridge.

[Effect]

As described above, the present invention uses a cartridge adapter that accommodates a small-sized disk cartridge and has the same size and external shape as a large-sized disk cartridge that can be attached to the main body of the drive device. Therefore, even if a small-sized disk cartridge is used, which is convenient for carrying and storing, it is very convenient to handle because it can be attached to the main body of a large-sized drive device to write and read information.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a perspective view of an optical disk cartridge drive device.

Figures 2 and 3 are diagrams for explaining the shutter opening operation of the optical disc cartridge within the adapter;
The figure and No. 5N are a partially enlarged plan view and a partially enlarged sectional view for explaining a state in which the optical disc cartridge is attached to a predetermined position of the adapter.

In FIG. 1, 1 is a 3.5-inch optical disc cartridge with a recording capacity of about 100 megabytes, and 2 is a 3.5-inch optical disc cartridge that can accommodate this 3.5-inch optical disc cartridge 1, and the size and external shape are 5.25-inch optical discs. Cartridge adapter identical to the cartridge (
Hereinafter, it will simply be abbreviated as adapter 2. ), 3 is a drive device main body to which this adapter 2 can be attached.

The optical disc cartridge 1 includes a cartridge case 4 made of hard synthetic resin, a metal shutter 6 with a U-shaped side surface for opening and closing a head window 5 of the cartridge case 4, and a rotatable metal shutter 6 inside the cartridge case 4. It mainly consists of a stored optical disc 7 (see FIG. 2).

Note that the shutter 6 is elastically biased in a direction to always close the head window 5 by a spring member (not shown) built into the cartridge case 4. In addition, in this embodiment, since a single-plate type optical disc is used, the opening 12 of the shutter 6 is provided only on the top surface. However, when a double-sided type optical disc is used, the shutter 6 is Openings 12 are provided in the upper and lower surfaces thereof.

The adapter 2 includes an upper case 8, a lower case 9, a lid 10 adhesively fixed to the upper case 8, a loader rail 11 adhesively fixed to the lower case 9, and a shutter 17.
It is mainly composed of.

The lid 10 and the loader rail 11 are made of metal such as aluminum, and as shown in FIG.
A space 13 for accommodating the optical disc cartridge 1 is formed between the first loader rail 11 and the first loader rail 11.
As shown in the figure, a cartridge insertion opening 14 is formed in the front flange of the adapter 2. Further, a notch 15 for inserting a finger is provided approximately at the center of the front side of the lid 10 and the loader rail 11, so that the optical disc cartridge 1 can be easily inserted into and removed from the adapter 2. There is. The shutter 17 is elastically biased by a spring member (not shown) in a direction that always closes the head window 18 formed on the adapter 2.

An opening 16 into which a 5.25-inch optical disc cartridge (not shown) or an adapter 2 can be inserted is formed on the front surface of the drive main body 3.

Note that this opening 16 is normally closed by a door (not shown) that is elastically biased in the closing direction, and is configured such that the door opens when the optical disc cartridge or adapter 2 is inserted.

Next, the operation of this disk cartridge drive device will be explained using FIGS. 2 to 5.

2 and 3 are diagrams for explaining the opening operation of the shutter 6 of the optical disc cartridge 1 within the adapter 2. FIG.

Inside the adapter 2 is an arm 1 that opens to face the space 13.
9 is rotatably supported around a support shaft 20,
This opening arm 19 is elastically biased toward the standby position by a tension spring 21.

22 is a stopper of the opening arm 19.

FIG. 2 shows the state before the shutter 6 is opened. The optical disc cartridge 1 is inserted into the adapter 2 with the shutter 6 side facing forward. As shown in the figure, one side wall of the loader rail 11 has a presser spring 2 made of a plate spring.
3 is provided, and the side wall opposite to this side wall is the reference wall 2.
4. Therefore, when the optical disc cartridge 1 is inserted into the adapter 2, it is pushed toward the reference wall 24 by the presser spring 23, and is positioned in the left-right direction.

A recess 2 is provided on the front surface of the cartridge case 4 of the optical disc cartridge 1 and at a position adjacent to the edge of the shutter 6.
5 is formed. The recess 25 is designed to face the tip of the opening arm 19 when the optical disc cartridge 1 is inserted with the optical disc cartridge 1 positioned in the left-right direction as described above. By pushing the optical disc cartridge 1, the tip of the opening arm 19 is inserted into the recess 25 and locked therein, and by pushing the optical disc cartridge 1 further, the opening arm 1
9 opens the shutter 6 while rotating clockwise against the elasticity of the tension spring 21.

FIG. 3 shows a state in which the shutter 6 is completely opened. The opening arm 19 is not straight, but is bent in the middle toward the optical disc cartridge 1 in an "r" shape, so that the shutter 6 is fully opened as shown in FIG. Also, the opening arm 19 comes into contact with a part of the optical disc cartridge 1, and the opening arm 1
There is no need to worry about shutter 9 coming off the shutter 6.

4 and 5 are a partially enlarged plan view and a partially enlarged sectional view showing the optical disc cartridge 1 housed in a predetermined position of the adapter 2. FIG.

As shown in FIG. 2, the optical disc cartridge 1 includes:
A position holding recess 26 is formed on the side surface near the front of the cartridge case 4. - On the other hand, as shown in FIG. 4, a position holding pin 27 is retractably provided on the same side wall as that on which the presser spring 23 is provided, and the pin 27 is elastically biased in the projecting direction by a coil spring 28. There is. Of course, this pin 27 is designed to be prevented from being removed by appropriate means.

As shown in the figure, when the optical disc cartridge 1 is inserted into the predetermined position, the pin 27 is inserted into the optical disc cartridge 1.
The presser spring 2 is inserted into the position holding recess 26 of the
3 and the coil spring 28, the optical disc cartridge 1 is pressed against the reference wall 24, and positioning in the left and right direction is reliably performed.

Further, as shown in the figure, a recessed portion 29 is formed on the front surface of the optical disc cartridge 1, which is exposed when the shutter 6 is completely opened. - side, loader rail 11
A protrusion 30 is provided protruding from the bottom surface. Note that the height of this protrusion 30 is limited so as not to interfere with the rotational movement of the opening arm 19. Optical disc cartridge 1
When the shutter 6 is inserted into a predetermined position, the shutter 6 is already completely opened, the recess 29 is exposed, and the protrusion 30 is inserted therein.

When writing or reading information, if the opening arm 19 is detached from the shutter 6 due to vibration from the outside for some reason, the shutter 6 is pulled back to its original position by the tensile force of the spring member. Therefore, if the projection 30 were inserted into the recess 29 as in this embodiment, the opening arm 1 would collide with the optical head inserted into the head window 18 of the optical disc cartridge 1.
Even if the optical head 9 comes off the shutter 6, the protrusion 30 functions as a stopper for the shutter 6, so that damage to the optical head and other problems can be prevented.

As shown in FIG. 5, a contact portion 31 is also provided upright on the side surface of the loader rail 11. A cartridge receiving portion 32 is provided at the base of the abutting portion 31, while the abutting portion 31
A lid receiving portion 33 is formed at the upper end. An end portion of the lid body 10 is adhesively fixed to the lid receiving portion 33, and a corrugated leaf spring 34, for example, is secured to the inner surface of the lid body IO facing the cartridge receiving portion 32 by an appropriate means such as adhesive. has been done.

The optical disc cartridge 1 is pressed onto the cartridge receiving portion 32 by the pressing force of the leaf spring 34 .

As mentioned above, since the inner surface of the loader rail 11 is polished with high precision, the optical disk cartridge 1 can be accurately positioned in the vertical direction by pressing against that surface. Further, as shown in FIG. 4, when the front surface of the optical disc cartridge 1 comes into contact with the front surface of the contact portion 40 of the adapter 2,
The contact portion 40 functions as a stopper, and the position of the optical disc cartridge 1 in the insertion direction is regulated.

In this way, the optical disc cartridge 1 is accurately positioned at a predetermined position within the adapter 2.

As shown in the figure, a convex portion 35 is formed at the bottom of the loader rail 11 at a position r11 corresponding to the positioning pin 36 (two places on the left and right when viewed from the bottom of the adapter 2), and the convex portion 35 holds the lower case 9. It passes through and is flush with the lower surface of the lower case 9, and a pin hole 37 is formed in the lower surface of this convex portion 35.

As shown in FIG. 1, a detection hole 38 is formed in a predetermined position of the lid 10. As shown in FIG. This is so that when the optical disc cartridge 1 is housed in the adapter 2, the state of the write protector 39 attached to the optical disc cartridge 1 can be optically detected from the drive unit body 3 from outside the adapter 2. be.

When the adapter 2 containing the optical disk cartridge 1 is inserted through the opening 16 of the drive unit body 3 with the shutter 17 first as shown in FIG. 1, the mechanism is the same as that described using FIGS. 2 and 3. As shown in FIG.
The shutter 17 is opened in accordance with the insertion of the shutter.

Although not shown, when the optical disc cartridge 1 is inserted into the adapter 2 to a predetermined position, the head window 5 of the optical disc cartridge 1 is designed to be directly below the head window 18 of the adapter 2. Therefore, when the shutter 17 of the adapter 2 opens, the optical head can be inserted into the head window 5 of the optical disc cartridge 1 because the shutter 6 has already been opened.

Further, when the adapter 2 is inserted to a predetermined position in the drive device main body 3, the entire adapter 2 is pressed downward by a pressing spring (not shown). Then, the pointed end of the positioning pin 36 provided in the drive device main body 3 is inserted into the pin hole 37 of the loader rail 11 as shown in FIG. 5, and the adapter 2 is positioned within the drive device main body 3. It will be done.

In this state, the optical head of the drive device main body 3 is connected to the adapter 2.
is inserted into the head window 5 of the optical disc cartridge 1 through the head window 18 of the optical disc cartridge 1, and information is written to or read from the optical disc cartridge 1 in the same way as a 5.25-inch optical disc cartridge. .

Ejection of the adapter 2 from the drive device main body 3 is performed by an auto-eject mechanism (not shown) provided within the drive device main body 3. Simultaneously with this ejection, the shutter 17 is automatically returned to the closed position. Also, the first step is to take out the optical disc cartridge 1 from the adapter 2.
Simply insert your fingers through the upper and lower notches 15 shown in the figure, grip the rear part of the optical disc cartridge 1, and pull out the optical disc cartridge 1 against the elasticity of the presser spring 23 and the coil spring 28. Along with this withdrawal, the shutter 6 is returned to the closed position.

In this embodiment, the case has been described in which the shutter 6 of the optical disc cartridge 1 and the shutter 17 of the adapter 2 are opened and closed separately, but when the optical disc cartridge 1 is inserted into the adapter 2.

It is also possible to configure the shutter 17 of the adapter 2 to open in conjunction with this. Further, when the optical disc cartridge 1 is inserted into the adapter 2, the shutter 6 is closed, and when the adapter 2 is inserted into the drive device main body 3, the shutter 6 of the optical disc cartridge 1 is also closed in conjunction with the shutter 17 of the adapter 2. It can also be configured to open. Furthermore, when closing the shutter 6.17, both can be similarly linked.

Further, in this embodiment, as shown in FIG.
The shutter 6 of the optical disc cartridge 1
Although it is arranged parallel to the insertion direction of the optical disc cartridge 1 in an area that does not interfere with opening and closing, it can also be arranged in a direction perpendicular to the insertion direction of the optical disc cartridge 1.

Furthermore, in this embodiment, the optical disc cartridge 1 is pulled out from the adapter 2 by hand;
Equipped with an eject mechanism inside, the optical disc cartridge 1
It can also be configured to be automatically ejected. On this occasion,
The opening arm 19 can also be used as an eject arm.

Furthermore, in this embodiment, a 5- and 25-inch compatible adapter that can accommodate a 3.5-inch disc cartridge has been described, but other sizes, such as a 12-inch compatible adapter that can accommodate a 5.25-inch disc cartridge, or a 3.5-inch disc cartridge can also be used. It can also be applied to a 12-inch adapter that can accommodate a .5-inch disk cartridge 1.

6 to 11 relate to a second embodiment of the present invention, in which FIG. 6 is a perspective view of an optical disc cartridge device, and FIGS. 7 and 8 show the shutter opening operation of the optical disc cartridge in the cartridge adapter, etc. FIG. 9 is an enlarged plan view of the main part for explaining the state in which the optical disc cartridge is installed in the predetermined position of the adapter.
Figure 0 is a sectional view taken along the line A-A in Figure 9, and Figure 11 is a cross-sectional view taken along line A-A in Figure 9.
-B sectional view.

In FIG. 6, 1 is a 3.5-inch optical disc cartridge containing a 3.5-inch optical disc, and 2 is a
An optical disc cartridge adapter (hereinafter simply referred to as adapter 2) that can accommodate this optical disc cartridge 1 and has the same size and external shape as a 5.25-inch optical disc cartridge.

Reference numeral 3 denotes a drive device main body to which this adapter 2 can be attached.

The optical disc cartridge 1 in this embodiment also includes a cartridge case 4 molded from hard synthetic resin, and a metal shutter 6 with a flat U-shaped side surface for opening and closing the head window 5 of the cartridge case 4, as in the previous embodiment. and an optical disc 7 (see FIG. 7) rotatably housed in the cartridge case 4. The shutter 6 is operated by a spring member (not shown) built into the cartridge case 4. , is elastically biased in a direction that always closes the head window 5.

Further, in this embodiment, when a single-sided type optical disc is used, the opening 12 of the shutter 6 is provided on the upper and lower surfaces thereof. When using a single-plate optical disc, the opening 12 of the shutter 6 may be provided only on the lower surface thereof.

The adapter 2 mainly includes an upper case 8, a lower case 9, a loader rail IIA adhesively fixed to the lower case 9, a lid body 10 adhesively fixed to the loader rail IIA, and a shutter 17. ing. The lid body 10 and the loader rail 11A are made of metal such as aluminum, and as shown in FIGS. As shown in the figure, a cartridge insertion opening 14 is formed on the front side of the adapter 2. Furthermore, a notch 15 for inserting a finger is provided approximately at the center of the front side of the adapter 2.

Note that the shutter 17 is elastically biased by a spring member (not shown) in a direction that always closes the head window 18 formed on the adapter 2.

A 5.25-inch optical disc cartridge (not shown) or an adapter 2 is mounted on the front of the drive unit main body 3.
An opening 16 is formed into which the optical disc cartridge 1 and adapter 2 can be inserted, and this opening 16 is normally closed by a door (not shown) that is elastically biased in the closing direction. The relationship will be explained using FIGS. 7 to 11.

FIGS. 7 and 8 are diagrams for explaining the opening operation of the shutter 6 of the optical disc cartridge 1 in the adapter 2, and the positioning mechanism of the cartridge 1 in the horizontal and vertical directions.

An opening arm 19 is rotatably supported in the adapter 2 so as to face the space 13 about a support shaft 20, and this opening arm 19 is elastically biased toward the standby position by a tension spring 21. There is.

22 is a stopper of the opening arm 19. FIG. 7 shows the state before the shutter 6 is opened, and the optical disc cartridge 1 is inserted into the adapter 2 with the flange of the shutter 6 at the tip. Loader rail 1 as shown in the figure
A presser spring 23 made of a plate spring is provided on one side wall of 1, and the side wall opposite to this side wall serves as a reference wall 24.

Therefore, when inserting cartridge 1 into adapter 2,
It is pushed toward the reference wall 24 by the presser spring 23, and is positioned in the left-right direction.

34A, 34A are a pair of leaf springs provided on the lower surface (inner surface) of the lid body 10, and are made of elongated spring members extending along the insertion direction of the optical disc cartridge 1. In this embodiment, the leaf springs shown in FIG. It is formed into a wave shape as shown in the figure.

The leaf springs 34A, 34A symmetrically press the upper surface of the optical disc cartridge 1 inserted into the adapter 2 near the left and right sides as shown in FIGS. 7 and 8, so that the lower surface of the optical disc cartridge 1 Press it against the cartridge receiving part 32 (see Fig. 10), which is a reference plane in the vertical direction,
The optical disc cartridge 1 is positioned in the vertical direction.

The leaf springs 34A, 34A are disposed outside the movement area of the shutter 6 of the optical disc cartridge 1, and
In this embodiment, as shown in FIG. 8, when the optical disc cartridge 1 is completely installed in the adapter 2, the cartridge 1 is pressed downward with the head window 5 of the cartridge 1 sandwiched therebetween. Therefore, the optical disc cartridge 1 is arranged evenly on the left and right sides, and the head window 5, which requires positioning accuracy when reading and writing information,
Since the peripheral portion is sandwiched and pressed, the positioning reliability and accuracy are good.

In the above-described embodiment, the loader rail IIA is provided with a stepped portion on its upper surface, but the upper case 8
When the thickness of the loader rail II and the cover body 10 are made the same, as in the third embodiment shown in FIGS. 12 and 13, the loader rail II
The upper surface of B can also be a flat surface.

Furthermore, when using a leaf spring wider than the leaf spring 34A of the second embodiment, as shown in FIGS. All you have to do is place it so that it presses against the left and right center parts of the top surface.

In this case, it becomes possible to increase the pressing force of the leaf spring 34B.

Here, since the opening operation of the shutter 6 of the optical disc cartridge l in the above-mentioned 2.3.4 embodiment is completely the same as in the above-mentioned first embodiment, the explanation thereof will be omitted.

〔Effect of the invention〕

As described above, the present invention uses a cartridge adapter that accommodates a small-sized disk cartridge and has the same size and the same external shape as a large-sized disk cartridge that can be attached to the main body of the drive device.
Even if a small-sized disk cartridge is used, which is convenient for carrying and storing, it is very convenient because it can be attached to the main body of a large-sized drive device to write and read information.

In addition, the positioning accuracy of small-sized disk cartridges within the cartridge adapter is high.

Therefore, the accuracy of positioning the small-sized disk to the main body of the drive device is improved. Furthermore, as in the illustrated embodiment, if a pair of leaf springs is used to symmetrically press both sides of the flat part of a small-sized optical disc cartridge,
The vicinity of the side of the cartridge case, which is relatively strong, is pressed and the position is regulated, so that the cartridge case can be positioned within the cartridge adapter in a well-balanced manner and with extremely high accuracy in the vertical direction.

[Brief explanation of the drawing]

1 to 5 relate to a first embodiment of the present invention, in which FIG. 1 is a perspective view of a disk cartridge drive device, and FIGS. 2 and 3 show that the optical disk cartridge is in a predetermined position in the adapter. A partially enlarged plan view and a partially enlarged sectional view for explaining the installed state, FIGS. 6 to 11 relate to the second embodiment of the present invention, and FIG. 6 is a perspective view of the disk cartridge drive device. , FIG. 7 and FIG. 8 are explanatory diagrams showing the shutter opening operation and positioning mechanism of the optical disc cartridge within the adapter, and FIG. 9 is for explaining the state in which the optical disc cartridge is installed at a predetermined position within the adapter. Figure 10 is an enlarged plan view of the main parts of Figure 9.
Line sectional view, Fig. 11 is a BB sectional view of Fig. 9, Fig. 12
The figure and FIG. 13 relate to the third embodiment of the present invention, and the twelfth embodiment
The figure is a sectional view of the main part corresponding to Fig. 10, and Fig. 13 is a sectional view of the main part corresponding to Fig. 11.
14 and 15 are cross-sectional views of main parts corresponding to the figures, and FIGS.
FIG. 8 is an explanatory diagram corresponding to FIG. 1... Optical disc cartridge, 2...
・Cartridge adapter (adapter), 3...
Drive unit body, 4... Cartridge case, 5
...Head window, 6...Shutter, 7...Optical disc, 8...Upper case, 9...Lower case, 10... ...Lid body, 1
1, IIA, IIB... Loader rail, 13.
... Space, 14 ... Cartridge insertion slot, 17 ... Shutter, 18 ... Head window, 19 ... Opening arm, 23 ...・・・
... Presser spring, 24 ... Reference wall, 26 ...
...Position holding recess, 27...Position holding pin,
28... Coil spring, 32... Cartridge receiving part, 34.34A, 34B... Leaf spring, 40... Contact part. Figure 2 Figure 3 5β4 Figure 5 Figure 7 Figure 81 Figure 12 Figure 13? Figure 1O Figure 11 j Figure 14 Figure 15

Claims (6)

[Claims] (1) a small-sized disk cartridge; a cartridge adapter in which the small-sized disk cartridge is housed in a predetermined position; and a cartridge adapter having the same size and the same external shape as the large-sized disk cartridge; 1. A disk cartridge drive device comprising a drive device main body configured such that a cartridge adapter accommodating a disk cartridge is attached to the drive device body so that information can be written to and read from the small-sized disk cartridge. (2) The disk cartridge drive device according to claim 1, wherein the small-sized disk cartridge and the large-sized disk cartridge are optical disk cartridges. (3) In claim 2, the cartridge adapter includes an opening for taking in and taking out the small-sized disk cartridge, and a positioning mechanism for positioning the small-sized disk cartridge inserted into the cartridge adapter at a predetermined position. A disk cartridge drive device comprising: (4) In claim 3, the positioning mechanism may position one side end surface of the small-sized disk cartridge.
In order to press the cartridge adapter against the position regulating section, a spring member that presses the other side end surface of the small-sized disk cartridge and one flat surface of the small-sized disk cartridge are pressed against the position regulating section of the cartridge adapter. 1. A disk cartridge drive device comprising: a spring member that presses the other flat surface of a small-sized disk cartridge. (5) In claim 4, the spring member that presses the flat part of the small-sized disk cartridge is a pair of leaf springs that press parts near both sides of the flat part of the cartridge. disk cartridge drive device. (6) In claim 5, the pair of leaf springs are arranged to sandwich the shutter window of the small-sized disk cartridge and on both sides of the sliding area of the shutter. disk cartridge drive device.