JPS6143785B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a storage container for recording discs,
In particular, it relates to a storage container that can be placed on a turntable 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. As this type of container, the present inventors have previously proposed the one described in Japanese Patent Application No. 53-119586 or Japanese Patent Application No. 53-119587, but in recent years, in addition to the above-mentioned requirements, Depending on the program content of the software, etc., it is necessary to extend the playback time. The present invention relates to this type of storage container, and by storing a plurality of recording disks (hereinafter referred to as disks) in the container and playing them sequentially, it is possible to play for a longer time, which is different from conventional storage containers. There is no need for a complicated mechanism that involves inserting multiple storage containers containing one disk and regenerating them one after another, and the time required to change disks is extremely short for a disk-in-a-container type. , with one storage container with a simple structure,
The present invention provides an easy-to-handle storage container that enables long-term regeneration and reduces the cost of the storage container per unit regeneration time, and will be described below with reference 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.
2 are disks, 3a and 3b are disk-shaped protective plates with a slightly larger diameter than disk 2, and 1 is a quadrilateral base made of, for example, a highly rigid resin.
In the center thereof, the protective plate 3 has a diameter slightly larger than that of the disk 2 and can accommodate the disk 2.
A through hole 4 having a diameter smaller than that of a and 3b is provided.
In the outer peripheries of the front and back sides of the through hole 4, recesses 5 having a diameter slightly larger than that of the protection plates 3a and 3b are provided.
a and 5b are provided.

Further, on the front and back sides of the four corners of the base 1, there are engagement claws 6 having a structure described later and having some flexibility for engaging and fixing the protection plates 3a and 3b to the base 1.
Engagement claws 6a', 6b', 6c', and 6d' having a similar structure are also provided on the rear surfaces of the engagement claws a, 6b, 6c, and 6d, respectively, so as to be slidable.

FIG. 2 is an enlarged configuration diagram of the front and back engaging claws 6a, 6a' provided at one corner.
A guide part 8 bent in an L shape is located in the center of a'.
a, 8a', and the tips have protrusions 9a, 9 for preventing slipping off.
a', and release engagement holes 10a, 10a' are provided at the other end.

Furthermore, tapered surfaces 11a, 11a' are provided at the distal edges of the engagement claws 6a, 6a'.

On the other hand, the engagement claws 6a,
Guide recesses 7a, 7a', . . . to which 6a' is fitted and engaged
(7a' is not shown in FIG. 2).
One end of these guide recesses 7a, 7a' is connected to the recess 5a,
It opens at 5b. A through hole 15 is formed in the guide recesses 7a, 7a', and recessed sliding surfaces 12a, 12 that engage with the guide parts 8a, 8a'
a′ is formed. The recessed sliding surface 12a,
One end edge 13a, 13a' of 12a' is the guide part 8.
a, 8a' are brought into contact with each other to restrict the sliding position of the guide portions 8a, 8a' (engaging claws 6a, 6a'). Also,
The retaining protrusions 9a, 9a' come into contact with one end 14 of the through hole 15, and restrict the sliding position of the engaging claws 6a, 6a'.

FIG. 3 shows the engaging claws 6a, 6a'
The three disks 2 are housed in the through hole 4, and the protection plates 3a and 3b are positioned above and below the disks 4. The outer circumferences of the protective plates 3a and 3b are the recesses 5a and 3b, respectively.
The protective plates 3a and 3b are engaged and fixed to the base plate 1 by the engaging claws 6a and 6a' pressing the tapered surfaces 18a and 18b provided on the outer periphery of the protective plate 5b, respectively. The state of the engagement claws 6a, 6a' in this state will be explained with reference to FIG. 2. The guide portions 8a, 8a' provided on the engagement claws 6a, 6a' are slidable on the sliding surfaces, respectively. The engagement claws 6a, 6a' are prevented from coming off in the thickness direction of the base plate 1.

Also, the edges 17a, 17 of the engaging claws 6a, 6a'
a' are the terminal edges 16 of the guide recesses 7a and 7a', respectively.
The retaining protrusions 9a, 9a' provided at a' come into contact with the end portion 14 of the through hole 15, thereby preventing the engaging claws 6a, 6a' from sliding.

With the above configuration, the three disks 2 are housed and fixed on the base plate 1 in a shape that is sandwiched between the protection plates 3a and 3b. FIG. 4 shows a state in which the disc 2 is placed on the turntable by sliding the engagement claw 6a'. From the state shown in FIG. ) was inserted, and the end of the engaging claw 6a' was bent in the direction of arrow A, thereby releasing the contact relationship between the end edge 17a' of the engaging claw and the terminal edge 16a' of the guide recess 7a'. Later, by moving in the direction of arrow B, the state shown in FIG. 4 is achieved. That is, the engagement claw 6a' and the protection plate 3
b is disengaged, and the disk 2 is separated from the base 1 together with the protection plate 3b.

The sliding movement of the engagement claw 6a' in the direction of arrow B is restricted by the guide portion 8a' coming into contact with the edge 13a' of the sliding surface 12a'. Furthermore, although the above description has been made regarding the engaging claws 6a and 6a', the other engaging claws have a similar structure.

Next, an example of a player using the disk storage container of the present invention having the above structure is shown in FIGS.
Shown in Figure 1. Figure 5 is an external configuration diagram, case 1
9, a chassis 20, a dust cover 21, an operation switch 22, and an indicator 23.

FIG. 6 shows the configuration after removing the dust cover 21 in FIG.
have. The loading base 26 is fixed to the chassis 20 with a desired gap to the turntable 24, and a lifting ring 28 disposed around the turntable 24 is located in the center of the loading base 26.
A through hole 27 with a larger diameter than the aforementioned protection plates 3a and 3b is provided, and guide plates 29 are provided at the four corners to regulate the placement position of the aforementioned storage container.
The storage container locking member 30 and each release engagement hole 10a of the storage container engagement claws 6a to 6d, 6a' to 5d'
~10d, release pin 3 that engages with 10a'~10d'
An elongated hole 34 through which 3 can be moved is provided. The other end of this release pin 33 is connected to the loading base 26.
The cam groove 32 of a disc cam 31 is rotatably supported concentrically with the through hole 27 . Details of this release pin portion will be described later. 36 is a pickup for detecting signals from the aforementioned disk; 35
is the pick-up yard.

FIG. 7 shows a cross section taken along line c-c' in FIG. A gear portion (not shown) that meshes with a gear 39 of a disc cam drive motor 38 is provided, and the disc cam 31 is rotationally driven in forward and reverse directions by this drive motor 38. A vertical screw 40 is attached to the lifting ring 28, and a rotating nut 41 supported by the chassis 20 that fits into the lifting ring 28 is provided with a rotation preventing means (not shown) to correspond to the rotation of the rotating nut 41. The elevating ring 28 is configured to be able to move up and down (the driving source for the rotating nut 41 is not shown). The other end of the umbrella shaft 25 is engaged with a cam groove 43 of a drive cam 42, and has a conventionally known structure for dropping the disks one by one. The pick-up carriage 35 is operated by rotation of a feed motor 47 using guide rods (not shown) fixed to bearings 44 and 45 fixed to the chassis 20 and a feed screw 46 rotatably supported. It has a structure that allows it to be scanned in both directions.

Figures 8 to 10 are detailed operational diagrams of the release pin 33, with Figure 8 showing the standby position, Figure 9 showing the loading intermediate position, and Figure 10 showing the loading completed position. explain.

8A is a perspective view of the standby position, FIG. 8B is a sectional view taken along line D-D', FIG. Figure E is a perspective view showing the support portion of the release pin 33. The release pin 33 has a notch 48 at the top, and a spring 49
The pin 51 is housed and held in a vertically slidable manner by the boss 50 while being biased upward by the pin 50, and a pin 51 is fixed to the lower part of the pin 51, which abuts the disk cam 31 and has a rotation preventing effect with respect to the boss 50. As a result, the structure is such that it can be moved up and down in correspondence with the disc cam 31 and the upper and lower cams 52 and 54 attached to the disc cam 31. Boss 50 is loading base 2
The slide plate 5 is held slidably in the directions of arrows V and W in the figure by a guide portion 56 attached to the slide plate 5.
7, and its lower part engages with the cam groove 32 of the disc cam 31, so that it can move in the directions of arrows V and W in the figure along the cam groove 32 as the disc cam 31 rotates. It's structured. Incidentally, as shown in FIG. 8C, the cam groove 42 is shaped such that it once faces toward the center from the standby position and then toward the outer circumference.
The upper and lower cams 52 and 54 are provided with inclined portions 53 and 55 so that the pin 51 can slide smoothly. In the standby position shown in Figure 8 A and B, pin 5
1 rests on the upper and lower cams 54, and therefore, the release pin 33 resists the spring 49 and is depressed corresponding to the thickness of the upper and lower cams 54. From this state, the disc cam 31 is rotated in the direction of the arrow x in the figure by the disc cam drive motor 38 described above, resulting in the intermediate position shown in FIG.

FIG. 9A is a perspective view of the intermediate position, and FIG. As the slide plate 57 moves in the direction of the arrow V in the figure, the pin 51 descends the inclined portion 55 of the upper and lower cams 54 and comes into contact with the lower surface of the disk cam 31. As a result, the release pin 33 is raised by the spring 49 in accordance with the thickness of the upper and lower cams 54. When the disc cam 31 further rotates in the direction of the arrow x in the figure from this state, it reaches the loading completion position shown in FIG. 10.

Figure 10A is a perspective view of the loading completed position;
FIG. 10B shows a cross section taken along line F-F', and as the disc cam 31 rotates from the state shown in FIG. 9, the boss 50 moves along the cam groove 32, and the slide plate 5
7 further moves in the direction of arrow V in the figure, the pin 51 ascends the inclined portion 53 of the upper and lower cams 52 and comes into contact with the upper and lower cams 52. As a result, the release pin 33 sinks against the spring 49 in accordance with the thickness of the upper and lower cams 52. The above series of operations is performed by the disc cam 31 in synchronization with the four release pins 33. The loading operation is thus completed, and the stroke of the cam groove 32, the thickness of the upper and lower cams 52 and 54, and their timing are configured to be optimal. Further, unloading can be performed by reversing the disc cam 31 from the state shown in FIG.

FIGS. 11A to 11D are operation diagrams in a state where the aforementioned storage container is placed, and below, FIGS.
The explanation will be given one by one with reference to Figure 0.

FIG. 11A shows a state in which the storage container shown in the first embodiment is placed in the standby position shown in FIG. 3a, 3b and the center hole of the recording disk 2 are engaged, and the outer circumference of the base 1 is engaged with the guide plate 29 to define the position, and the position is defined in the vertical direction by the locking member 30. As a result, the release engagement hole 10a' of the engagement claw 6a' is disposed directly above the release pin 33. In this state, the release pin 33 is sunk, so it does not interfere with the loading and unloading of the storage container.From this state, the disc cam 31 moves in the direction of the arrow x in FIG.
When the pin 51 is rotated, the pin 51 descends the inclined part 55 of the upper and lower cams 54, and the release pin 33 is raised by the spring 49 in accordance with the thickness of the upper and lower cams 54, so that the tip of the pin 51 is moved up into the release engagement hole 10a'. As the boss 50 moves along the cam groove 32, the slide plate 5
7 moves in the direction of arrow W in FIG. 8A, that is, moves toward the center of the shape of the cam groove 32 shown in FIG. 8C, resulting in the state shown in FIG. 11B. When the disk cam 31 further rotates from this state, the boss 50 moves along the cam groove 32, and the slide plate 57
is moved in the direction of arrow V shown in FIG. 8A, the notch 48 of the release pin 33 moves to a position where it comes into contact with the release engagement hole 10a', resulting in the state shown in FIG. 11C. During this operation, the release pin 33 is not moved up or down. When the disc cam 31 further rotates from this state, the pin 51 moves to the upper and lower cams 52.
The release pin 33 descends against the spring 49 in accordance with the thickness of the upper and lower cams 52, and the upper part of the notch 48 comes into contact with the engagement claw 6a', and the engagement claw 6a' The terminal edge 16 of the base 1 is
It is pulled down to release the contact with a' (see FIG. 2), resulting in the state shown in FIG. 11D. The cam groove shape is such that the slide plate 57 is not moved during this operation. When the disk cam 31 further rotates from this state, the boss 50 moves along the cam groove 32, and the slide plate 57 moves in the direction of arrow v in FIG. Slide the recessed sliding surface 12a' (see Figure 2) and remove the protective plate 3.
The engagement and fixation of b to the base 1 is released, and the 11th
The state shown in Figure E is reached, and the rotation of the disc cam 31 stops. During this operation, the release pin 33 is not moved up or down. As a result, the protection plate 3b and the disk 2
is placed on an umbrella-type shaft 25. still,
The rotation angle of the disk cam 31 from FIG. 11A to FIG. 11E is determined by, for example, a micro switch (not shown). From the state shown in FIG. 11E, the umbrella type shaft is driven in the same way as the audio autochanger, and the protection plate 3b and the first disk 2 are dropped onto the turntable 24.
The state becomes ready for reproduction as shown in FIG. 11F. In this state, the turntable 24 is driven by the drive motor 58, and as shown in FIG. 7, the pick-up carriage 35 is driven by the feed motor 47 to move in the radial direction of the disk 2, thereby performing a reproducing operation. It can be done. When the reproduction of the first disc is completed, the pick-up cartridge 35 returns to its original position, and the umbrella shaft 25 operates to drop the second disc. The same operation is carried out thereafter, and when the reproduction of the third disc is completed, the pick-up carriage 35 returns to its original position, and the rotating nut 41 shown in FIG. The three disks 2 are placed on the disk 3b and raised, resulting in the state shown in FIG. 11G. From this state, the disc cam 31 is reversely rotated by the disc cam drive motor 38, and eye loading is performed by performing the aforementioned series of reverse operations. The above series of operations from FIG. 11A to FIG. The operation to FIG. 11 and the unloading operation continue to be performed. Incidentally, when regenerating the back side of the disk, it is sufficient to place the storage container upside down and perform the series of operations described above.

In the above embodiment, the number of disks housed in the storage container was three, but it is clear that any number of disks may be used. In addition, protective plates 3a and 3b
By making the center hole of the disk 2 larger than the center hole of the disk 2, it is also possible to configure the protective plate 3b to drop regardless of the umbrella shaft 25 in the state shown in FIG. 11E. As a result, the operation of the umbrella shaft 25 from FIG. 11E to FIG. 11E can be completed in one operation. Alternatively, the protective plates 3a, 3b may be used as disks by recording only on the inner surfaces of the protective plates 3a, 3b when stored in the container.

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

1 The disk is protected, so dust, fingerprints, etc. do not adhere to it.

2. You can play for a long time with one storage container.

3. The playback time can be set by changing the number of discs stored, and can be adjusted according to the program content.

4. Since one storage container is not required for one disk, the cost of the container per playback time can be reduced.

5. Since the protection plate is supported by the concave portion of the base, the disk can be held stably.

6. Since a long program can be played in one storage container, it is easy for the user to handle.

7. Since there is no need to replace the storage container as in the conventional case, the time required for replacement can be shortened and the mechanism of the playback device can also be simplified.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the recording disk storage container of the present invention, FIG. 2 is an exploded perspective view of the main parts, and FIG. 3A is a perspective view of the same main parts in a recording disk holding state. B is a sectional view of the same essential part, Figure 4A is a perspective view of the same essential part with the recording disk released from holding, B is a sectional view of the essential part,
5 to 11 show an embodiment of a reproducing apparatus using the recording disk storage container of the present invention, FIG. 5 is a perspective view of an embodiment of the main body of the reproducing apparatus, and FIG. 6 is a perspective view of an embodiment of the reproducing apparatus main body. A cutaway perspective view of the same part, FIG. 7 is a sectional view of the same side,
Fig. 8 A is a perspective view of the main part, B is a sectional view of the same side, C is a plan view of the main part, D is a side view of the same, E is a partially cutaway perspective view of the main part, and Fig. 9 A is a sectional view of the same main part. Fig. 10 A is a perspective view in another operating state; B is a sectional view of the same side; Fig. 11 A, B, C, D, H, H, T. are side sectional views of main parts in each operating state. 1... Storage container base, 2... Meiroku disk, 3a,
3b...Protection plate, 4...Through hole, 5a, 5b...
Recessed portion, 6a, 6b, 6c, 6d...Engagement claw, 7
a, 7b...Guide recess, 10a, 10a'...Engagement hole.

Claims (1)

[Scope of Claims] 1. Two disk-shaped protection plates having a slightly larger diameter than the plurality of recording disks to be stored, and a through hole having a diameter larger than the plurality of recording disks and smaller in diameter than the protection plates. a base made of a rigid material and having a recess on the outer periphery of the through hole that engages with the outer periphery of the protection plate;
A recording disk comprising a fixing means provided on the base so that the outer periphery of the protection plate disposed on the front and back sides of the plurality of recording disks housed in the through hole can be engaged with and detached from the recess. storage container. 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 is comprised of a plurality of engaging claws slidably provided in a direction capable of approaching and separating from the protection plate. 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 is configured such that its position is regulated and maintained, and the engaging claw has a release provided on the device. The recording disc storage according to claim 2, further comprising an engagement hole that engages with a pin and bends the engagement claw in a direction to release the engagement claw from one end edge of the guide recess. container. 4. 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.