JPS61199282A - Cartridge of light disk - Google Patents

Abstract

PURPOSE:To enable to make a light disk device thin by pressing a clamp adapter formed to specified shape in one direction through a spherical part. CONSTITUTION:An inverted conical center adapter 7 that forms a clamp adapter 6 together with a discoid elastic body 8 and an annular clamp 9 is pressed in one direction by an elastic member provided in the upper case of a cartridge through a spherical member 5. Accordingly, the center position is centered automatically by the adapter 7 that fits to a center hole 11, and a disk 10 is pressed in one direction in the cartridge. The disk 10 is controlled even when the cartridge is in single state, and when the cartridge is mounted, the disk 10 is engaged surely to a turntable and held. Thus, a clamp arm etc. become unnecessary, and the light disk device can be made thin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a cartridge containing an optical disc, and particularly to an optical disc cartridge that allows the optical disc device to be made thinner.

[Background of the invention]

Conventionally, regarding cartridges that store optical discs,
Although it is described in Utility Model Application Publication No. 56-162581, it simply stores an optical disc in a cartridge, and does not take into consideration how to hold the optical disc in the cartridge. The movement may cause damage to the optical disc. Holding the optical disk in combination with a secondary optical disk device (loading operation, etc.) also requires the mechanism described below, and it is difficult to make the optical disk device thinner when using a cartridge containing an optical disk. That is, the conventional method for holding an optical disk in an optical disk device has the configuration shown in FIG. A common method is to place the optical disc 3 on the turntable 4 of the disc drive unit 5. Therefore, when using an IJ (a car containing the optical disk 3), the clamper 1 and clamp arm 2 must be positioned above the top surface of the cartridge, and this space is required for the optical disk device. However, this is a major factor that prevents optical disk devices from becoming thinner. Therefore, in order to make the optical disk device thinner when using a cartridge containing an optical disk, a cartridge that does not require a clamper, a clamp arm, etc. is required.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical disc cartridge that solves the problems of the prior art described above and allows the optical disc device to be made thinner.

[Summary of the invention]

The present invention is a cartridge for reducing the thickness of an optical disk device using a cartridge that stores an optical disk, and a clamper and a clamper for pressing a center adapter that is stored in the cartridge and engaged with a center hole of the next optical disk. A spherical member is held at the center of the center adapter, and an elastic member provided in the upper case presses the clamp adapter in one direction via the spherical member. Therefore, by holding the optical disk in the cartridge in one direction, when the cartridge is installed in the optical disk device, the optical disk in the cartridge is held in a predetermined position by the clamper of the clamp adapter, and the optical disk is held in one direction by the center adapter. By aligning the center of the disc with the rotation center, a clamper or the like of the optical disc device is no longer necessary, making it possible to reduce the thickness of the optical disc device. Since the optical disc in the cartridge is pressed in one direction, a recessed notch is formed in the cartridge so that the information recording range of the optical disc does not come into contact with the information recording range.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view of a cartridge showing an embodiment of the present invention (
α) is a top perspective view, and (b) is a bottom perspective view. FIG. 3 is an exploded perspective view of the cartridge shown in FIG. 2 excluding the shutter part, and FIG. 4 is a sectional view of the cartridge, where (a) shows the cartridge as a single unit, and (b) shows the state after it is installed in an optical disk device. This shows that.

In the figure, 1 is a cartridge, 2 is an upper case 3 is a guide groove, 4 is an elastic member, 5 is a spherical member, 6 is a clamp adapter, 7 is a center adapter, 8 is a disc-shaped elastic body, 9 is a clamper, and 10 is a Optical disc, 11 is the center hole, 12 is the lower case, 13 is the shutter frame guide, 14 is the guide groove,
15 is a guide hole, 16 is an optical disk storage part, 17 is a convex part, 18 is an optical head insertion part, 19 is a spring hole, 20 is a wire guide, 21 is a shutter guide, 22 is a bottle, 2
3 is a shutter frame, 24 is a shutter, 25 is a guide plate,
26 is a shutter holder, and 27 is a recess.

Next, the configuration of the cartridge 1 will be explained.

From Figure 2, car) IJ edge 1 is basically upper case 2.
An optical disk 10 is housed in a space formed by a lower case 12, and an elastic member 4 for pressing the optical disk 10 via a spherical member 5 and a clamp adapter 6 is provided in the upper case 2. 12 is provided with guide grooves 14 on both sides to serve as a guide when inserting into an optical disk device, and a t-th shutter 24 is installed to cover the optical head insertion section 18 into which an optical head or the like is inserted in a single unit state. Re,
The shutter 24 is equipped with a guide plate 25 and a shutter holder 26 for guiding the shutter 24 in the direction of the arrow in the figure.
A shutter frame guide 13 is provided to guide a shutter frame 25 that slides. Further, the lower case 12 is provided with a guide hole 15 for positioning the optical disc device at a predetermined position when the optical disc device is installed. Further, the shutter 24 is held in the recess 27 of the lower case 12, and the shutter 24 and the shutter holder 261ti, including the shutter holder 26, protrude from the surface of the lower case 12.
There is no state. In addition, upper case 2 and lower case 12
is fixed with screws 30 or the like.

This will be explained in detail using FIG. Note that the shutter section is excluded here. An elastic member 4 is provided in the central hole 28 of the upper case 2, and a guide groove 3 is formed on one end surface to guide the shutter 24 in the vertical direction when combined with the lower case 12. There is.

7, a clamper 9, and a full disk-shaped elastic body 8t' are held together, and a hole 29 in which a spherical member 5 (such as a steel ball) is held is provided in the center of the center adapter 7.

Furthermore, there is an optical disc 10 provided with a center hole 11.

The lower case 12 is provided with an optical disk storage section 16 for storing a 10 gold optical disk. Here, the recessed diameter of the optical disk storage portion 16 is slightly larger than the diameter of the optical disk 10 (approximately the optical disk diameter + 2 diameters). Further, convex portions are provided on the inner and outer circumferential portions of the optical disk storage portion 16 so that the portion other than the information recording range of the optical disk 10 comes into contact with the inner and outer circumferential portions.
7, the information recording range of the optical disc 1o is configured to be non-contact, with no recesses.

Further, on the lower surface of the lower case 12, a round optical head insertion portion 18 into which an optical head is inserted is provided.

Furthermore, guide groove 1 determines the insertion direction into the optical disk device.
4 and a guide hole 15 for positioning. Further, in order to constitute the entire shutter section, a spring hole 19 is provided in the same shape as the arc of the optical disk storage section 16 on the opposite side to the sliding position of the shutter section, and a wire guide 20 is further provided on the side surface. Further, a shutter guide 21 is provided, and a shutter frame guide 13 is provided via a wire guide 20i. Here, the shutter frame guide 13 is configured in a U-shape to hold the U-shaped shutter frame 23 as shown in (b) 1.

Note that the guide plate 25 is fixed to the lower case 12 through holes 31 and screw holes 32 with screws, etc.
When the guide plate 25 and the guide plate 25 are fixed, a gap is created by the combination of the guide plate 25 and the shutter guide 21, and the shutter 24 of the shutter section shown in FIG. It is something.

Next, the structure and operation of the cartridge will be explained with reference to FIG.

Figure 4 ia) is a cross-sectional view of the IJ-judge alone;
(Al shows a cross-sectional view of the device installed in an optical disk device.

Here, from FIG. 4 (α), it can be seen that when the cartridge 1 is alone, an elastic member 4 is provided in the recess 37 of the center hole s2B of the upper case 2, held by screws at both ends, adhesive, etc., and presses the spherical member 5. are doing. Here, the spherical member 5 is held and positioned in a hole 29 provided at the center of the center adapter 7 of the clamp adapter 6. Furthermore, since the clamp adapter 1 has a structure in which the center adapter 7 and the clamper 9 that presses the optical disc 10 from above are held together by the disk-shaped elastic body 8, the elastic member 4, the spherical member 5, and the clamp adapter 6 are held together by the disk-shaped elastic body 8. The optical disk 10 is pressed downward through the holder. Note that the center adapter 7 has an inverted cone-shaped tube), and the inverted cone-shaped part is
Insert the optical disc 10 into the center hole 11, and
0 positioning is performed. Further, the optical disc 10 pressed downward by the clamp adapter 6 comes into contact with the lower surface of the optical disc accommodating part 16 of the lower case 12, but due to the shape of the optical disc accommodating part 16, the information recording range 35 of the optical disc 10 The corresponding lower surface is made into a concave part, and the inner and outer circumferential parts other than the information recording range 35 of the optical disc 10 are made into convex parts 17. In this case, the information recording range 65 of the optical disc 10 is in a non-contact state, and there is no damage or damage. It can be prevented. Further, since the optical head insertion part 18 of the lower case 12 is placed, it is in a state where it can come into contact with the surface of the optical disc 10 as it is, but in the cartridge 1 of the present invention, a shutter 24 is provided to cover the optical head insertion part 113i. It is something that exists. Here, the shutter 24 has a substantially U-shape, holds a prismatic guide holder 54, and is held in a predetermined position by the shutter guide 21 of the lower case 12, the guide groove 3 of the upper case 2, and the guy F plate 25. A gap 3B is formed to allow the shutter 24 to slide.

The surface of the shutter 24 that covers the optical head insertion part 1st is attached to the recess 27 of the lower case 12, and the end is held by a shutter holder 26.
The shutter portion including 6 is constructed so as not to protrude beyond the bottom surface of the lower case 120.

That is, even when the optical disk 10 housed in the cartridge 1 is alone, the optical disk 10 is pressed downward by the elastic member 4 provided on the upper case 2 via the spherical member 5 and the clamp adapter 6, and the optical disk 1
The information recording range 35 of the optical disc 10 is in a non-contact state due to the shape of the lower surface of the optical disc storage s16 of the lower case 12 that contacts the optical disc storage part 16 of the lower case 12. Also, the optical disc 10t can be held so that the information recording range 35 of the optical disc 10 is not damaged.

As shown in (j), from the cross-sectional view of the state in which the cartridge 1t is installed in the optical disk device, the optical disk 10 in the cartridge 1 is moved into the space of the optical disk storage section 16 by the turntable or the like of the optical disk device. When the optical disc is held (details will be explained in FIG. 15), there will be a predetermined space from the lower surface of the optical disc storage section 16, and the optical disc 10 can be rotated there.

Note that at this time, the optical disk 10 is pressed and the companion clamp adapter 6 is also pushed upward, and furthermore, the elastic member 4 provided in the upper case 2 is also pushed upward via the spherical member 5. produce an effect. Therefore, elastic members
Since the relationship between the elastic force of the elastic member 40 and the elastic force of the disk-shaped elastic body is made strong, the clamper 9 of the clamp adapter 6 is held on the upper surface of the optical disk 10, but the center adapter 7 (In the state 41, the inverted conical circumferential surface of the center adapter 7 and the center hole 1 of the optical disc 10
The disk-shaped elastic body 8 is deformed within the elastic range by the elastic force of the elastic member 40, and pushes the center adapter 7 downward. When lowered, the clearance between the center hole 11 of the optical disc 10 and the inverted conical circumferential surface of the center adapter 7 becomes zero*g, making it possible to locate the center of the optical disc 10. Therefore, the center hole 11 of the optical disc 10 generally has a tolerance (for compact discs, the diameter is φ15-
o tolerance), if this tolerance is not absorbed, the optical disc 1
When the center hole 11 of the optical disk 10 changes due to tolerances, the information track becomes eccentric, causing problems such as performance deterioration and inoperability. 9 and disk-shaped elastic body 8
Therefore, even if the clamper 9 is in a fixed state, the center adapter 7 can move, and the center hole 1 of the optical disc 10 is held by the elastic member 4 and the spherical member 5.
The inverted conical circumferential surfaces of the center adapter 1 and the center adapter 7 can be configured to always have a clearance ze a, and the center position of the optical disc 10 can be determined. Furthermore, due to the deformation of the disc-shaped elastic body 8), the clamper 9 is subjected to a larger pressing force than in the GL state, so that the optical disc 10 can be held more stably. (In addition, even in the state of (al), the clamper 9
Since a predetermined pressing force is applied to the center adapter 7,
and the center hole 11 of the optical disk 10 are held with zero clearance, and the optical disk 10 can be held without any problem even if the disc-shaped elastic body 8 does not deform when it is mounted in an optical disk device. ) From the above, the optical disc 10 is housed in the cartridge 1, and the clamp adapter 6 is provided inside, and the clamp adapter 6 presses the optical disc 10 in one direction. Even in this state, the movement of the optical disc 10 within the cartridge 1 is restricted, and damage to the surface of the optical disc 10 due to movement due to vibration etc. can be completely prevented. In order to hold the optical disk IQi by the clamper 9 of the companion clamp adapter 6, and to adjust the center position of the optical disk 10 by absorbing variations in the center hole 11 of the optical disk 10 by the center adapter 7, the optical disk device is equipped with a clamper and a center. There is no need for a positioning mechanism, and the device can be made thinner.

Next, we will fully explain each part.

5 is an exploded perspective view of the clamp adapter 6, FIG. 6 is a WG diagram of the clamp adapter 6, and FIGS. 7 to 9 are other configuration diagrams of the disc-shaped elastic body 8 of the clamp adapter 6.

As shown in FIG. 5, the clamp adapter 6 has a disc-shaped elastic body 8, an inverted conical shape, and a hole 29 for holding the spherical member 5 in the center position is formed by a center adapter 7 and a clamper 9. From the configuration diagram shown in FIG. It is fixed to the top surface with a screw 30, etc., and the center.

A spherical member 5 is held in a hole 29 provided at the center of the adapter 7. Note that the inverted conical portion of the center adapter 7 corresponds to the center hole 11 of the optical disc 10 shown by the dotted line.
A mating hole 33 is provided on the bottom surface of the center adapter 7 to align the center of the center adapter 7 with the center of rotation of the disc drive unit when attached to an optical disc device, and the end 34 has a tapered shape. Therefore, even if there is a slight positional deviation, alignment is possible. Further, the clamper 9 is in contact with the upper surface of the optical disk 10.

Note that since the center adapter 7 and the clamper 9 are held by the disc-shaped elastic body 8, even if the fluff 9 position is fixed by applying force to the spherical member 5 from above, the center adapter 7 will not move downward. Even if the hole diameter of the center hole 11 of the optical disc 10 described above varies within the tolerance, it can be constructed with zero clearance from the center adapter 7, and the center position of the optical disk 10 can be determined. It is what it is.

7 to 9 show other configurations 1kk of the disk-shaped elastic body 8 of the clamp adapter 6, and FIG. 7 shows the outer ring portion 37 of the conventional disk-shaped elastic body 8. It is divided. FIG. 8 shows a divided inner ring portion 36 of the disc-shaped elastic body 8 shown in FIG. 7, which is made by using a plurality of ordinary leaf springs. In FIG. 9, the inner ring part 56 and the outer peripheral part 39 of the disc-shaped elastic body 8 shown in FIG. 7 have a wavy shape. Note that the conditions for the disc-shaped elastic body 80 are as follows:
The center adapter 7 and the clamper 9 are held together by seven elastic forceps, and it is also possible to use a torsion spring, a spiral spring, etc.

FIG. 10 is a configuration diagram of the elastic member 4 held in the upper case 2. The curves provided on both end surfaces are the portions where the portion 40 is joined to the upper case 2, and the groove 42t is connected to the bottom end of the elastic member 4. 41 has a structure with a slight bend.

FIG. 11 is a diagram showing the combination of the elastic member 4 shown in FIG. 10 with the upper case 2.
The bent portion 40 is placed in the recess 37 and held by the screw 30 or the like, and the end portion 41 is configured to engage with the end face of the central hole portion 28 for positioning.

FIG. 12 is an sg diagram of the shutter section.

That is, the shutter part is defined by a spring 51 held at one end by a pin 22 in a fixed state, the other end held by a wire 52, and the other end of the wire 52 held entirely by the spring 51. It is inserted into a hole 55 of a guide holder 54 fixed to the shutter 24 and fixed to the guide holder 54 with a set screw 53 . Also, one end of the wire 56 is inserted into the hole 55 of the guide holder 540, and is fixed to the guide holder 54 with a set screw 53.
It is fixed at 6.

Here, the spring 51, the wire 52, the shutter 24,
The guide holder, wire 56, shutter frame 23, etc.
As explained in the drawings and FIG. 4, it is held by each guide portion of the lower case 12 and has a configuration as shown in the drawings. In addition, in the figure, the position indicated by a solid line indicates that the optical head insertion part 18 is covered, and the position indicated by a dotted line indicates that the optical head insertion part 18 is opened. An optical head is inserted into the optical head insertion section 18, and information signals and the like can be recorded and reproduced on the optical disk 10. 'Here, the operation of the shutter part is as follows: one end of the wire 52 is fixed to the spring 51 which holds one end to the bottle 22 fixed to the lower case 12, the other end is fixed to the shutter 24, and the wire 52 is inserted into the hole 55 of the friend guide holder 54. It is fixed with a female locking screw 53. As a result, the shutter 24 is fixed to the shutter 24, and the guide holder 54 receives the tensile force of the spring 51 through the wire 52 in the direction of the arrow shown by the dotted line in the figure. It is held under a predetermined force in a position covering 18 degrees. One end of the wire 56 is inserted into the hole 55 of the guide holder 54 and fixed by the set screw 55, and the other end is inserted into the hole 55 of the guide holder 54.
Fixed. Therefore, by inserting the IJ head into the optical disk device, the shutter 24 is operated by moving the shutter frame 23 using the protrusion provided in the optical disk device. It is liberating.

That is, by moving the shutter frame 231 in the direction of the arrow, the guide holder 54 and the shutter 24 are also moved in the direction of the arrow against the tensile force of the spring 51 via the wire 56t, resulting in the state shown by the dotted line in the figure. It is located in

Figure 13 shows the guide holder 54 and wire 52 of the shutter section.
, 56.

Here, the guide holder 54 is provided with holes 55 passing through it at both ends, a wire 52 is inserted into the hole 55 at one end and fixed with a set screw 53, and a wire 56 is inserted into the hole 55 at the other end. 'Ik is inserted and fixed with a set screw 53. Even if the lengths of the wires 52 and 56 vary slightly due to this, it can be adjusted by changing the insertion length of the wires 52 and 56 inserted into the holes 55 of the guide holder 54. The force and the mounting position &' of the shutter frame 23 can be set to predetermined values.

FIG. 14 is an explanatory diagram showing the operation of the shutter frame 23.

That is, by providing a protrusion 41t on the cartridge holder 40 of the optical disk device at a position corresponding to the position of the shutter frame 23 of the cartridge 1 in the perspective view shown in FIG. The end surface of the shutter frame 25' comes into contact with the protrusion 41, and the shutter frame 25'
(By further inserting the cartridge 1, the shutter frame 23 is held in a position where it contacts the protrusion 41, and the shutter frame guide 13t of the lower case 12 is
- It does not move υ, the shutter 24'l - operates.

-12, from the front view shown in (A), the cartridge holder 40 has a bent portion 42 at the bottom and is positioned to engage with guides #114 provided on both sides of the lower case 12 of the cartridge 1. Therefore, it functions as a guide when inserting the cartridge 1. In addition, since the positional configuration is within the thickness dimension of the cartridge 1, the cartridge holder 40 can be made thinner, and
When the cartridge 1 is reversed υ, as shown in FIG. 2, the guide groove 14 is configured only halfway, so if it is inserted from the opposite direction, the cartridge will not be inserted into the ridge holder 40, and the insertion operation from other than the specified insertion direction will occur. It is completely preventable.

FIG. 15 is a configuration diagram when the cartridge 1 is inserted into the optical disc drive 60 and is in the fc state.

That is, in the configuration diagram of the insertion operation state shown in (a), the optical disc device 60 is inserted into the IJ 1 from the outside.
T-Cartridge holder 40 has lower case 1 in part 42.
2, the guide groove 14 is shown inserted as a guide,
The cartridge 1 can be inserted into the optical disk device 60 at a position slightly above the top surface of the turntable 64 of the optical disk drive section 61. (tfc, car) When the IJ edge 1 is inserted, the protrusion 41 of the cartridge holder 40
Since the shutter frame 23 is held in a predetermined position,
As described above, the shutter 24 is in the position where the optical head insertion portion 18 is opened. Further, when the cartridge 1 is at the predetermined insertion position, the switch 68t is operated, and the cartridge I'1 (not shown) is loaded into the mounting position shown in bl.

According to the configuration diagram of the teN state shown in (hl), the optical head insertion portion 18 provided in the lower case 12 of the cartridge 1 is
The turntable 64 and optical head 66 of the disk drive section 61 are inserted into the disk drive section 61, the optical disk 10 is rotationally driven by the turntable 64 of the disk drive section 61, and the optical head 66 becomes capable of recording and reproducing information signals.

In addition, when the cartridge 1 is in the predetermined mounting position, the optical disc 10 in the cartridge 1 is attached to the menin tape 64 of the disc drive unit 6, as described above.
It is held by the upper surface, which is the lower case 12 of the cartridge 1.
The optical disc 10 is positioned with a predetermined clearance from the bottom surface of the optical disc storage section 16, and the optical disc 10 does not come into contact with anything. (Excluding turntable 6, aH
) Therefore, there is no obstacle in the rotational movement. Further, the optical disk 10t is fixedly held on the turntable 64 and the center of rotation of the disk drive unit 61 is made to coincide with the center of the optical disk 10 by a clamp adapter 6 provided within the cartridge 1.

That is, when the cartridge 1 is installed, the hole portion 33 provided at the lower part of the center adapter 7 of the clamp adapter 6 is connected to the rotation shaft 6 of the Dinuk motor 62 of the disk drive unit 61.
3 and 3 with high precision (even if the hole 33 of the center adapter 7 and the rotating shaft 63 are slightly misaligned, the retaining part 34 provided in the hole 33 has a tapered shape). , the hole 33 is engaged along the rotation axis 63, and the center adapter 7 can be positioned.), the center of the center adapter 7 can coincide with the center of the rotation axis 6 on the center. Further, as described above, the inverted conical circumferential portion of the center adapter 7 and the center hole 11 of the optical disc 10 are connected to the elastic member 4.
Since the optical disc 10 is engaged with the spherical member 5 with zero clearance, the center of the optical disc 10 can be aligned with the rotation center of the rotation shaft 63 of the disc drive section 61 via the center adapter 7.

By pressing the optical disc IQt against the turntable 64 using the clamper 9 of the clamp adapter 6, the optical disc 10t can be securely held. Therefore, in the optical disk device 60, the optical disk 10t
- A center positioning mechanism for aligning the center of rotation of the disk drive unit 61 with the center of the optical disk 10 and a clamp mechanism for securely holding the optical disk 10 are no longer necessary, and the optical disk device can be made thinner.

〔Effect of the invention〕

As described above, according to the optical disc cartridge of the present invention, the optical disc stored in the cartridge can be
It is equipped with a center adapter that engages with the center hole of the optical disk, a clamp adapter that is connected by a full elastic body to a clamper placed on the top surface of the optical disk, and this clamp adapter is installed in the upper case and then held by the elastic member and the clamp adapter. Next, by pressing in one direction via the spherical member,
Since the optical disc gold cartridge is pressed in one direction, even when the cartridge is a single cartridge, it is possible to control the movement of the optical disc after storing it, which prevents damage to the optical disc, and also prevents the cartridge from being inserted into the optical disc device. When inserting and mounting the disc, the clamp adapter engages with the entire optical disc turntable to securely hold it, and the center of the optical disc and the rotation axis can be aligned. Since there is no need for an optical disc holding mechanism or an optical disc center positioning mechanism, and the optical disc device can be made thinner, it is possible to provide a compact optical disc device with a large capacity, and optical discs can be handled using a cartridge method. Therefore, it is possible to provide an optical disc cartridge with excellent operability and reliability.

[Brief explanation of the drawing]

Fig. 1 is a diagram of a conventional optical disk holding structure, and Fig. 2 (al.
, (61 is a perspective view of a cartridge showing one embodiment of the present invention, FIG. 3 is an exploded perspective view, and FIG. 4 (6). (71 is a cross-sectional view of the cartridge structure, and FIG. 5 is an exploded perspective view of the clamp adapter. Figure 6 is a configuration diagram of the clan 1 adapter, Figures 7, 8, and 9 are other configuration diagrams of the disc-shaped elastic body, Figure 10 is the configuration 1g of the elastic member, and Figure 811 is the top Figure 14 ('+ *66: The optical head (A) is a shutter part Diagram explaining the movement of the top, Figure 15 (a)
. (HL is a configuration diagram of an optical disk device and a cartridge. 1: Cartridge 2: Upper case 4: Elastic member 5: Spherical member 6; Clamp adapter 7: Center adapter 8; Disc-shaped elastic body 9: Clamper
10: Optical disc 11: Center hole 12:
Lower case 13: Shutter frame guide 16: Optical disk storage section 17: Convex portion 18: Optical head insertion section 22: Pin 23: Shutter frame 24: Shutter
25 guide plate 35: information recording range 40: cartridge holder 41: protrusion 42: bending portion 51 spring 52.56: wire 54 guide holder 60: optical disk device 61; disk drive section 62; disk motor 63: rotating shaft
64; Turntable Figure 3 Figure 4111 (a) (, b) Figure 6 Figure 7th gear diagram $9 Figure Kay IO 171 Figure 12 Figure 14 Cause (b)

Claims (1)

[Scope of Claims] 1. In a cartridge storing an optical disc in a space constituted by an upper case and a lower case, an inverted conical center adapter that engages with a center hole of the optical disc stored in the cartridge, and the optical disc a clamp adapter that holds a clamper that presses the center adapter with a disc-shaped elastic body, and a spherical member is held at the center of the center adapter;
Pressing the spherical member with an elastic member provided in the upper case of the cartridge, pressing the clamp adapter in one direction via the elastic member and the spherical member, and either a clamper or a center adapter of the clamp adapter. An optical disc cartridge, characterized in that the optical disc is held in one direction by one or both of the cartridges. 2. In the optical disc cartridge according to claim 1, an information recording range of the optical disc is provided on a contact surface of one case of the cartridge that contacts the optical disc pressed in one direction by the clamp adapter. An optical disc cartridge characterized in that a wider area is formed into a concave notch, the information recording range of the optical disc is in a non-contact state, and the area other than the information recording range of the optical disc is held in contact with the cartridge. .