JPH0221472A - Disk cartridge and device for handling the same - Google Patents

Abstract

PURPOSE:To prevent play in and the movement of a disk in a cartridge from being generated and to prevent the disk from being damaged by providing a presser means to limit the movement of the disk by pressing the outer edge part of the disk and to release the above limiting state. CONSTITUTION:The motion of the position of the disk 5 is limited by a rib 17 and a presser 18 in the disk cartridge. In other words, in a state where no disk cartridge is loaded on a recording and reproducing device (nonuse state), the outer edge part of the disk 5 is pressed with the rib 17 and the presser 18, and the disk 5 is fixed or set in the state where it can be moved slightly. In such a way, the disk can be prevented from shaking or moving in various directions in the cartridge, meanwhile, when the disk cartridge is loaded on the recording and reproducing device, since a parts 19 extruded to the outside of a cover is moved in a direction to separate the presser 18 from the disk, the disk 5 can be rotated.

Description

[Detailed description of the invention] [Subject of invention] The present invention relates to video discs and PCM discs.

The present invention relates to a disk cartridge that stores a disk such as a digital optical disk, and a disk device that handles the cartridge.

[Background of the invention]

In order to protect the surface of a disc as an information recording medium from scratches, dust, etc., it is desirable to use it by storing it in a disc cartridge.

Therefore, when recording or reproducing information on this disc, the entire disc cartridge is installed in the recording/reproducing device, the disc is rotated within the disc cartridge, and the disc is rotated within the disc cartridge.
Recording or reproducing information.

On the other hand, when the disc is not in use, that is, when it is not installed in a recording/reproducing apparatus, it is important to prevent the disc from rattling or moving within the cartridge and being damaged. Further, when a disk cartridge is installed in a recording/reproducing apparatus, the disk must be placed in a free state within the cartridge and then installed on a disk rotation spindle provided on the recording/reproducing apparatus. Of course, when the cartridge is removed from the recording/reproducing apparatus, it is important that the disk is automatically fixed within the cartridge after being removed from the rotating spindle.

[Purpose of the invention]

An object of the present invention is to provide a disc cartridge that prevents the disc from rattling or moving within the cartridge when the disc is not in use. Another object of the present invention is to provide a disk device that allows the disk to be freely rotated within the cartridge when the disk cartridge is installed in the device.

[Summary of the invention]

In order to achieve the two-legged objective, the present invention provides a holding means for restricting the movement of the disc in a cartridge that accommodates the disc as an information recording medium. In a preferred embodiment, this pressing means is provided on a cover member constituting the cartridge.

It includes a presser foot that presses the outer edge of the disk and a rib that presses and abuts the other outer edge of the disk, and when the disk is not in use, the disk is pressed against the ribs and movement of the disk in the surface direction is restricted. Ru.

The cover member constituting the disk cartridge is provided with a hole through which a spindle passes in order to load the disk into a disk device and rotate it, and a hole for recording or recording. Normally, these holes are closed by shutters when the disc is not in use, that is, when it is set in a disc device and information is not being recorded or reproduced. on the other hand.

During recording or reproduction, the shutter moves to open these holes provided in the cartridge.

In the present invention, when a disk is used, that is, when a disk cartridge is set in a disk device, the shutter is opened, and the disk becomes ready to be set on the rotating means, that is, the spindle. At the same time, a releasing means provided on the disk device side releases the disk from being restricted by the pressing means, and the disk becomes free within the cartridge and can be rotated by the spindle.

In a preferred embodiment, the release means is a convex portion provided on the frame of the disk device, and a portion of the pressing means comes into contact with this convex portion, thereby releasing the disk from the pressed state. Further, when the disc cartridge is taken out from the disc device, the pressing state by the release means is released, and the disc is returned to the state in which the disc is restricted by the pressing means again.

In a further preferred embodiment, the disk device is provided with a detection means for detecting whether or not the disk is in a rotating state. This detecting means detects that the pressing means is moved by the releasing means and the disc is in a free state within the cartridge. For example, a hole provided in the cartridge facing the movable portion of the holding means is optically detected when the holding means moves.

[Embodiments of the invention]

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an exploded perspective view of a disk cartridge that is an embodiment of the present invention.

In the figure, an upper cover 1 and a lower cover 1' are provided with holes 3, 3' for disk rotation, and holes 4, 4' for access by a recording/reproducing head, respectively. Reference numeral 5 denotes a disk which comes into contact with the drive shaft and the clamp member at the holes 3 and 3' for one rotation, and is accessed by a recording/reproducing head at the holes 4 and 4' during rotation to record and reproduce signals. 6a and 6b are upper cover 1 and lower cover 2
8 riders 8a, 8b are movably attached to the guide bars 6a, 6b through holes 9a, 9b', respectively. A pair of shutters 10A, IOA' and IOB, 10B' are attached to the sliders 8a and 8b from above and below by pins 12, respectively.
Move left and right along with a and 8b to rotate hole 3 on the cover.
The end portion 13 of each shutter engages with a guide 14 formed on the surface of the cover to prevent it from separating from the cover during opening and closing operations. It has become. Further, the sliders 8a and 8b are urged toward the center by springs lla, llb, so that the shutter normally closes the rotation holes 3 and 3' and the recording and reproducing holes 4 and 4'. When the shutter is in the closed state, the stoppers 15a and L5b provided on the sliders 8a and 8b engage with the recesses 16 of the upper cover 1 and the lower cover 1', so that the closed state of the shutter is maintained.

Within the disk cartridge, the movement of the disk 5 is restricted by a rib 17 and a presser foot 18. That is, when the disc cartridge is not installed in the recording/reproducing apparatus (when not in use), the outer edge of the disc 5 is pressed by the ribs 17 and the presser foot 18, so that the disc 5 is fixed or slightly movable. This prevents the disk from wobbling or moving in the surface direction of the disk within the cartridge.

On the other hand, when the disc cartridge is installed in a recording/reproducing device, the part 19 protruding from the cover moves the presser foot 18 in the direction away from the disc, so that the disc 5
becomes free within the disk cartridge and can rotate without contacting other members. Also, when you remove the disc cartridge from the recording/playback device, part 1
9 becomes free, and the presser foot 18 is returned to its original position by the biasing means or spring 21, thereby restricting the movement of the disk 5.

Reference numeral 23 denotes a hole for detecting the state of the disk, and since this hole is opened and closed by a block 20 that is linked to the movement of the presser foot 18, the open/closed state is detected to detect whether or not the disk 5 is rotatable. As a detection method, a photosensor may be used, or when a pin is passed through the hole 23 to position the disk, it may be detected whether or not a bottle passes through.

2(A) to 2(C) are partial sectional views showing the movement of each part when the disk cartridge 50 of FIG. 1 is installed in a recording/reproducing apparatus.

24 is a recording/reproducing device frame, and this frame 24
A pair of guides 25 and opening members 26a and 26b that slide on each guide 25 are attached to the holder. Springs 27a and 27b are attached to the opening members 26a and 26b, respectively, and are normally located at the positions shown in FIG. 2(A).

When the disk cartridge 50 is inserted into the frame, the opening member 26a opens as shown in FIG. 2(B).

26b engages with sliders 8a, 8b. At this time, the stopper 15 of each slider is the opening member 26a, 26b.
, and released from the four parts 16 of the cover.

When the disk cartridge is further inserted, the release member 26
a, 26b move along guides 25a, 25b,
Since the sliders 8a and 8b follow this, the shutter 1
0A, IOB, 1, OA' and 10)3' are spread out to the left and right, respectively.

When most of the cartridge 50 is inserted into the frame, the parts 19 engage with the protrusions 28 provided at both ends of the frame and move the presser foot 18, as shown in FIG. 2(C). As a result, the disk 5 becomes free and can rotate within the cartridge, and the hole 23 becomes "open", so that completion of loading the cartridge is detected.

〔Effect of the invention〕

According to the present invention, when the disc is not in use, the outer edge of the disc is pressed inside the cartridge and its movement is restricted, so that the disc does not wobble inside the cartridge.
This prevents the disk from moving and damaging the disk.

Further, when the disk is used, the disk becomes free within the cartridge, and rotation of the disk becomes possible.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a disc cartridge that is an embodiment of the present invention, and Figures 2 (A) to (C) are movements of various parts when the disc cartridge shown in Figure 1 is installed in a recording/reproducing device. FIG. 1... Upper cover, 1'... Lower cover 3...
Hole for disk rotation, 4... Hole for recording and playback, 5... Disc. 6... Guide bar 8... Slider, IOA, IO
B... Shutter, 17... Rib, 18... Holder, 23... Disk condition detection hole, 28... Convex portion. Figure 1

Claims (1)

[Claims] 1. A disc cartridge for storing a disc, characterized in that it is provided with a pressing means that presses the outer edge of the disc to restrict the movement of the disc, and is capable of releasing this restricted state. disc cartridge. 2. The pressing means is provided inside the cover member constituting the disk cartridge, and the pressing means includes a presser movably disposed on the outer edge of the disk, and a biasing means for always pressing the presser against the outer edge of the disk. 2. A disk cartridge according to claim 1, wherein when the disk is used, an external force is applied against the pressing force applied to the urging means to release the restricted state of the disk. 3. The disk cartridge according to claim 2, wherein the biasing means is a spring. 4. Loading a disk cartridge provided with at least a hole for rotating the disk and a shutter that can open and close the hole provided in the cover member of the cartridge that stores the disk, and recording or recording information on the disk. In a disc device for playback, the disc cartridge is provided with a holding device that presses the outer edge of the disc to restrict movement of the disc, and the disc device is provided with a holding device that releases the restricting state by the pressing device when loading the disc cartridge. and a rotating means that rotates the disc housed in the cartridge through the hole provided in the cartridge. 5. The disk device according to claim 4, further comprising a detection means for detecting that the disk is in a rotatable state after the disk is no longer restricted by the pressing means. 6. The release means is provided on the frame of the disk device so that the state of restriction by the holding means is released as the disk cartridge is loaded into the frame of the disk device. The disk device according to item 5.