JPS6143787B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a storage container for recording disks, and particularly to a storage container that can be placed on a turntable and played back without directly touching a high-density recording disk.

Generally, video discs have very high density recording (for example, the groove pitch is 4.5 μm and the groove depth is also very shallow).
Therefore, care must be taken when handling it. In particular, dust, scratches, fingerprints, etc. on the surface may cause dropouts or locked grooves, making stable playback impossible. Therefore, there is a need for a container that can be placed on a turntable and played back without touching the video disc directly during handling. In recent years, in addition to the above-mentioned requirements, longer playback times are required due to the program content of software. The present invention stores a plurality of discs with recordings on one side in a storage container having a bottomed recess and plays them sequentially, thereby making it possible to play the discs for a longer time than was previously possible. It is a simple method that does not require a complicated mechanism such as inserting multiple containers containing a single disk and regenerating them one after another, and the time required to change the disks is extremely short for a disk-in-a-container type. To provide an easy-to-handle and highly rigid recording disc storage container that enables long-time playback with a single storage container and thereby reduces the price of the storage device per unit playback time. Hereinafter, examples thereof will be given and explained according to the drawings.

FIG. 1 is a schematic diagram of the structure of a first embodiment of a storage container according to the present invention, in which 2 is a disk having a recording surface 2a on one side, 3 is a disc-shaped protection plate slightly larger in diameter than the disk 2, and 1 is, for example, It is a rectangular base made of highly rigid resin, and has a bottomed recess 4 in its center that is slightly larger in diameter than the disk 2 and smaller in diameter than the protection plate 3, which can accommodate the disk 2. A through hole 7 of the same size as the center hole of the disk 2 is provided in the center of the bottom surface. A recessed step 5 having a slightly larger diameter than the protection plate 3 is provided on the outer periphery of the recess 4 on the opening side. Further, the four corners of the surface of the base 1 having the recess 4 have a configuration described below,
Slightly flexible engagement claws 6a, 6b, 6c, and 6d for engaging and fixing the protection plate 3 to the base 1 are provided so as to be slidable.

FIG. 2 shows a section taken along the line A-A' in FIG. 1 with the protection plate 3 and disk 2 housed, and the disk 2 is housed with the recording surface 2a facing the bottom of the recess 4.

Fig. 3 is an enlarged configuration diagram of the engaging claw 6a provided at one corner.The engaging claw 6a has a guide portion 9a bent in an L-shape in the center, and a guide portion 9a at the tip to prevent it from coming off. The projection 10a has a release engagement hole 11 at the other end.
A is provided. Further, a tapered surface 12a is provided at the tip end edge of the engagement claw 6a. On the other hand, the surface of the base 1 having the recess 4 is provided with a guide recess 8a into which the engaging claw 6a is engaged. One end of this guide recess 8a is connected to the recess step 5.
It is open to A through hole 16 is formed in this guide portion 8a, and a recessed sliding surface 13a that engages with the guide portion 9a is formed. One end edge 14a of the recessed sliding surface 13a is in contact with the guide portion 9a, and the guide portion 9a (engaging claw 6a)
Regulates the sliding position of the Furthermore, the retaining protrusion 10a abuts on one end 15 of the through hole 16 to restrict the sliding position of the engaging claw 6a.

FIG. 4 shows a state in which the engaging claw 6a is attached to the guide recess 8a, and the disk 2 is housed in the recess 4, with the protection plate 3 positioned above it. The outer periphery of the protective plate 3 is located on the recessed step 5, and when the engaging claw 6a presses the tapered surface 19 provided on the outer periphery, the protective plate 3
is engaged and fixed to the base 1. The state of the engagement claw 6a in this state will be explained with reference to FIG. 3. The guide portion 9a provided on the engagement claw 6a
is slidably engaged with the sliding surface portion 13a, and prevents the engaging claw 6a from coming off in the thickness direction of the base plate 1. Further, the end edges 18a of the engaging claws 6a abut on the terminal edges 17a of the guide recesses 8a, and the retaining protrusions 10a provided on the engaging claws 6a abut on the ends 15 of the through holes 16. This prevents the engaging claw 6a from sliding. With the above configuration, the disk 2 is supported by the protection plate 3 and the base 1
Storage is fixed.

Fig. 5 shows the state in which the disc 2 is placed on the turntable by sliding the engagement claw 6a, and the engagement for release is shown in a state in which the upper and lower sides are reversed from the state shown in Fig. 4. A release pin (not shown) is inserted into the hole 11a, and the end of the engagement claw 6a is bent in the direction of arrow B, thereby forming an abutting relationship between the edge 18a of the engagement claw 6a and the terminal edge 17a of the guide recess 8a. After releasing , by moving in the direction of arrow C, the state shown in FIG. 5 is achieved. That is, the engaging claw 6a
The engagement between the disk 2 and the protection plate 3 is released, and the disk 2 and the protection plate 3 are separated from the base 1. The sliding movement of the engagement claw 6a in the direction of arrow C is restricted by the guide portion 9a coming into contact with the edge 14a of the sliding surface portion 13a. Furthermore, although the above explanation has been made only regarding the engaging claw 6a, the other engaging claws 6b, 6c, and 6d have a similar configuration.

FIG. 6 is a schematic diagram of a second embodiment of the storage container according to the present invention, in which the through hole 7 in the bottom of the recess 4 in the first embodiment is omitted. FIG. 7 is a cross section taken along the line DD', and since it is the same as the first embodiment, the explanation will be omitted hereafter.

FIG. 8 is a schematic diagram of the structure of the third embodiment of the storage container according to the present invention, in which the recessed step 5 in the first embodiment is shown.
And, the protective plate 3 is eliminated, and the outer periphery of the disk 2 recorded on one side is engaged and fixed to the base 1 by engaging the engaging claws 6a to 6d. 9th
The figure shows the E-E' cross section. Since the other configurations are the same as those in the first embodiment, their explanation will be omitted.

Next, an example of a player using the disc storage container of the present invention having the above structure is shown in FIGS.
It is shown in FIG. 16 and will be explained sequentially.

FIG. 10 is an external configuration diagram, which includes a case 20, a chassis 21, a dust cover 22, an operation switch 23, and an indicator 24.

Figure 11 shows the dust cover 22 in Figure 10.
The turntable 25 has an umbrella-type shaft 26 in the center thereof, which is used in a conventional audio autochanger. The loading base 27 is fixed to the chassis 21 with a desired gap from the turntable 25, and has a lifting ring 29 disposed around the turntable 25 and a lower diameter than the aforementioned protection plate 3 at its center. large through hole 28
are provided at the four corners, and a guide plate 30 for regulating the placement position of the storage container, a storage container locking member 31, and a storage container engaging claw 6a.
A long hole 35 is provided in which a release pin 34 that engages with each of the release engagement holes 11a to 11d of 6d to 6d can move. The other end of this release pin 34 engages with a cam groove 33 of a disc cam 32 that is rotatably supported on the loading base 27 coaxially with the through hole 28 (see details of this release pin section). (described later). 37 is a pickup for detecting signals from the aforementioned disk, and 36 is its pickup cartridge.

FIG. 12 shows a cross section taken along line F-F' in FIG.
A part of it is provided with a gear part (not shown) that meshes with a gear 40 of a disc cam drive motor 39 attached to the loading board 27, and the disc cam 32 is rotated in forward and reverse directions by this drive motor 39. Driven. A vertical screw 41 is attached to the elevating ring 29, and the chassis 2 that fits into the vertical screw 41
A rotating nut 42 supported by the rotating nut 42 is provided with a rotation prevention means (not shown), and the elevating ring 29 is configured to move up and down in response to the rotation of the rotating nut 42. The other end of the umbrella shaft 26 is engaged with a cam groove 44 of a drive cam 43, and has a conventional structure for dropping the disks one by one. The pick-up carriage 36 rotates the turntable 25 as the feed motor 48 rotates by a guide rod (not shown) fixed to bearings 45 and 46 fixed to the chassis 21 and a feed screw 47 rotatably supported. It has a structure that allows scanning in the radial direction.

13 to 15 are detailed operation diagrams of the release pin 34 portion, with FIG. 13 showing the standby position, FIG. 14 showing the intermediate position, and FIG. 15 showing the loading completion position. do.

13A is a perspective view of the standby position, FIG. 13B is a sectional view taken along line G-G', and FIG.
13D is a side view of the same, and FIG. 13E is a perspective view showing a support portion of the release pin 34. The release pin 34 has a notch 49 in its upper part, and is housed and held in a boss 51 so as to be slidable up and down while being biased upward by a spring 50.
The lower part is in contact with the disk cam 32 and has a boss 51.
A pin 52 having a rotation-preventing effect is fixed to the disc cam 32, thereby making it possible to move up and down in correspondence with the disc cam 32 and upper and lower cams 53 and 55 attached to the disc cam 32. The boss 51 is a guide portion 57 attached to the loading base 27.
It is fixed to a slide plate 58 that is slidably held in the directions of arrows V and W in the figure, and the lower part of the slide plate 58 engages with the cam groove 33 of the disc cam 32, so that the disc cam 32
Along the cam groove 32 as the arrow V in the figure rotates,
It has a structure that allows it to move in the W direction. Incidentally, as shown in FIG. 13C, the cam groove 33 is shaped so that it once faces toward the center from the standby position, and then toward the outer circumference. Pins 52 are attached to the upper and lower cams 53 and 55.
Slanted portions 54, 5 are provided so that sliding can be performed smoothly.
6 is provided. In the standby position shown in FIGS. 13A and 13B, the pin 52 rides on the upper and lower cams 55, and therefore the release pin 34 resists the spring 50 and sinks corresponding to the thickness of the upper and lower cams 55. ing. From this state, the disc cam 32 is rotated by the disc cam drive motor 39 in the direction of the arrow X in the figure, resulting in the intermediate position shown in FIG.

FIG. 14A is a perspective view of the intermediate position, and FIG. 14B is a cross section taken along line H-H'.
1 moves along the cam groove 33, the slide plate 58 moves in the direction of arrow V in the figure, and the pin 52 descends the inclined portion 56 of the upper and lower cams 55 and comes into contact with the lower surface of the disc cam 32. This causes the release pin 32 to release the spring 5.
0, it rises in accordance with the thickness of the upper and lower cams 55. When the disk cam 32 further rotates in the direction of the arrow X in the figure from this state, it reaches the loading completion position shown in FIG. 15.

Figure 15A is a perspective view of the loading completed position;
Figure 15 (b) shows the I-I' cross section.
As the disk cam 32 rotates from the state shown in FIG. 54 and comes into contact with the upper and lower cams 53. This allows release pin 3
4 sinks against the spring 50 in accordance with the thickness of the upper and lower cams 53. The above series of operations is caused by the disc cam 32 in synchronization with the four release pins 34. This completes the loading operation, but the stroke of the cam groove 33 and the upper and lower cams 5
The thicknesses of 3 and 55 and their timing are optimized. Further, unloading can be performed by rotating the disc cam 32 in the reverse direction from the state shown in FIG.

FIGS. 16A to 16D are operation diagrams in which the first embodiment of the storage container described above is placed. We will explain the details one by one.

FIG. 16A shows a state in which the storage container shown in the first embodiment is placed in the standby position shown in FIG. , center hole of disk 2,
The through holes of the base 1 are engaged with each other, and the outer peripheral portion of the base 1 is engaged with the guide plate 30 to define the position, and the position is defined in the vertical direction by the locking member 31. As a result, the release engagement hole 11a of the engagement claw 6a is provided directly above the release pin 34. In this state, the release pin 34 is sunk, so it does not interfere with the placement and removal of the storage container. From this state, the disc cam 32 moves to the first position.
When the disc cam drive motor 39 rotates in the direction of arrow X in Figure 3A, the pin 52 descends the slope of the upper and lower cams 55, and the release pin 34 is raised by the spring 50 in accordance with the thickness of the upper and lower cams 55. Then, as the tip enters the release engagement hole 11a, the boss 51 moves along the cam groove 32, and the slide plate 58 moves into the first position.
It moves in the direction of arrow W in FIG. 3A, that is, moves toward the center of the shape of the cam groove 33 shown in FIG. 13C, resulting in the state shown in FIG. 16B. When the disc cam 32 further rotates from this state, the boss 51 moves along the cam groove 33, and the slide plate 58 moves to the thirteenth position.
By moving in the direction of arrow V in FIG. 16A, the notch 49 of the release pin 34 moves to a position where it comes into contact with the release engagement hole 11a, resulting in the state shown in FIG. 16C. During this operation, the release pin 34 is not moved up or down. When the disc cam 32 further rotates from this state, the pin 52 ascends the inclined part 54 of the upper and lower cams 53, and the release pin 33 descends against the spring 50 in accordance with the thickness of the upper and lower cams 53, and the notch part The upper part of 49 comes into contact with the engagement claw 6a, and using the flexibility of the engagement claw 6a, it is pulled down to release the contact with the base 1 (see FIG. 3), resulting in the state shown in FIG. 16D. The cam groove shape is such that the slide plate 58 is not moved during this operation. From this state, the disc cam 32
When the boss 51 rotates, the boss 51 moves along the cam groove 33, and the slide plate 58 moves in the direction of the arrow V in FIG.
slides on the recessed sliding surface 13a (Figs. 3 to 5)
(see figure), the engagement and fixation of the protection plate 3 to the base plate 1 is released, and the disc cam 3 becomes in the state shown in Fig. 16E.
2 stops rotating. During this operation, release pin 34
No vertical movement is performed. As a result, the protective plate 3
And the disk 2 is placed on an umbrella type shaft 26. The rotation angle of the disk cam 32 from FIG. 16A to FIG. 16E is determined by, for example, a micro switch (not shown). From the state shown in FIG. 16E, the umbrella shaft 26 is driven in the same way as an audio autochanger, causing the protection plate 3 and the first disk 2 to fall onto the turntable 25, resulting in the playable state shown in FIG. 16F. . In this state, the turntable 25 is driven by the drive motor 59, and as shown in FIG. 12, the pick-up carriage 36 is driven by the feed motor 48 and moves in the radial direction of the disk 2 to perform a reproducing operation. It can be done. When the first disc has finished playing, pick up the disk 3.
6 returns to its original position, and the umbrella type shaft 26
operates and drops the second disk. The same operation is carried out thereafter, and when the reproduction of the third disc is completed, the pick-up carriage 36 returns to its original position, the rotating nut 42 shown in FIG. 12 is rotated, and the elevating ring 29 is protected. Three disks 2 are placed on the plate 3 and the disk rises to the 16th disk.
The state shown in the figure is reached. From this state, disc cam 3
2 is reversely rotated by the disk cam drive motor 39, and eye loading is performed by performing the aforementioned series of reverse operations. Above, Figure 16 A to 1
The series of operations shown in FIG.
The operation to FIG. 16 and the unloading operation continue to be performed continuously.

Although an example of the storage container and its player according to the present invention has been described above, the number of discs stored in the storage container is not limited to three and may be any number. The configuration of the third embodiment has the advantage that the number of disks increases by one, and the playback time becomes longer. In addition, in the first and second embodiments, by making the diameter of the center hole of the protection plate larger than that of the disk, the protection plate can be prevented from falling regardless of the umbrella type shaft in the state shown in FIG. 16E. A configuration is also possible. As a result, the operation of the umbrella shaft from FIG. 16E to FIG. 16E can be completed in one operation.

As described above, if the storage container according to the present invention is used, the following effects will be obtained.

1 The recording surface of the disc is protected, so dust, fingerprints, etc. do not adhere to it.

2 The base is strong because it has a bottom.
Therefore, there is little deformation of the disc 3. The base has only one opening, so it has excellent sealing performance 4. A single storage container can be used for long periods of playback 5. The playback time can be set by changing the number of discs stored. 6. Since one container is not required for one disk, the price of the container per playback time can be reduced.

7 Since there is no need to replace the conventional storage container, the mechanism of the playback device can be simplified and the disk change time can be extremely shortened.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2 is a sectional view of the same when the recording disk is stored, Fig. 3 is an exploded perspective view of the main parts, and Fig. 4 is the same main part when not in use. Figure 5 shows the same essential parts during use, Figure 6 shows another embodiment of the present invention. FIG. 7 is an exploded perspective view showing an example; FIG. 7 is a sectional view of the recording disk when it is stored; FIG. 8 is an exploded perspective view of still another embodiment of the present invention; FIG. 9 is a sectional view of the recording disk when it is stored; FIG. 10 is a perspective view showing an example of a player using the storage container of the present invention, FIG. 11 is a partially cutaway perspective view of the same, FIG. 12 is a side sectional view of the same, and FIG.
The figures show the same main parts, A is a perspective view, B is a side sectional view, C is a plan view of the same main parts, D is a side cross section, E is a partially cutaway perspective view, and Fig. 14 shows different operating conditions. The main parts are shown, A is a perspective view, B is a sectional view,
Fig. 15 shows the same essential parts in further different operating states, with A being a perspective view, B being a sectional view, and Figs.
B, C, D, H, H, and G are cross-sectional views showing different operating states, respectively. 1...Base, 2...Disk, 3...Protection plate,
4...Through hole, 5...Recess, 6a, 6b, 6c, 6
d...Engaging claw, 8a...Guiding recess, 11a...
Engagement hole.

Claims (1)

[Scope of Claims] 1. A base having a bottomed storage recess slightly larger in diameter than a plurality of recording disks recorded on one side to be stored; A recording disc storage container comprising a fixing means provided on the base so as to be engageable and detachable. 2. The fixing means is placed in the guide recess provided in the base.
2. The recording disc storage container according to claim 1, wherein the distal end thereof comprises a plurality of engaging claws slidably provided in a direction capable of approaching and separating from the outer peripheral edge of the recording disc. 3. The engaging claw is made of a flexible material, one end of which comes into contact with one end edge of the guide recess, and its position is regulated and maintained. The recording disk storage according to claim 2, further comprising an engagement hole that engages with a release pin and curves the engagement claw in a direction to release the engagement claw from one end edge of the guide recess. container. 4. A disc-shaped protection plate is disposed opposite to the recording disc located on the opening side of the storage recess in the recording disc, and the protection plate is removable by the fixing means. A recording disc storage container according to claim 1, wherein the recording disc storage container is held by a base. 5. The base is provided with a recess having a diameter slightly larger than the storage recess on the opening side, and a disc-shaped protection plate having a diameter larger than the diameter of the recording disc that protects the stored recording disc is disposed in the recess. 2. A recording disc storage container according to claim 1, characterized in that: 6. The recording disc storage container according to claim 1, wherein the base has a substantially quadrilateral shape, and fixing means are provided at each of its four corners.