JPS6143786B2 - - 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 and Japanese Patent Application No. 53-119587, but in recent years, in addition to the above-mentioned requirements, soft Depending on the content of the program, etc., longer playback times are required. 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 to insert multiple storage containers containing one disk and play them one after another, and the disk change time is extremely short for a disk-in-a-container type. The purpose of the present invention is to provide an easy-to-handle storage container that enables long-term regeneration using a single storage container with a simple structure and reduces the cost of the storage container per unit of regeneration time. , will be 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 plurality of disks (3 disks), and 3a and 3b are disk-shaped protective plates having a diameter larger than the diameter of the disk 2. , 1 is, for example, a quadrilateral base made of high-rigidity resin, and in the center thereof,
A through hole 4 having a diameter slightly larger than that of the protection plates 3a, 3b is provided in which the disk 2 and the protection plates 3a, 3b can be accommodated. Further, on the front and back sides of the four corners of the base 1, there are engaging claws 5a, 5b, 5c, 5d having a structure described later and having some flexibility for engaging and fixing the protection plates 3a, 3b to the base plate 1. Engagement claws 5a', 5 having a similar configuration are also provided on the back side.
b', 5c', and 5d' are each slidably provided.

FIG. 2 shows a cross section taken along line A-A' in FIG. 1 with the disk 2 and protection plates 3a and 3b housed.

FIG. 3 is an enlarged configuration diagram of the front and back engaging claws 5a, 5a' provided at one corner.
A guide part 7 bent in an L shape is located in the center of a'.
a, 7a', and the tips have protrusions 8a, 8 for preventing slipping off.
a', and release engagement holes 9a, 9a' are provided at the other end. Furthermore, tapered surfaces 10a, 10a' are provided at the distal edges of the engaging claws 5a, 5a'. On the other hand, the engaging claws 5 are provided on the front and back sides of the base 1.
Guide recesses 6a, 6 where a, 5a' are engaged and installed
a'(6a' is not shown in FIG. 3). One end of the guide recesses 6a, 6a' opens into the through hole 4. A through hole 14 is formed in the guide recesses 6a, 6a', and the guide portion 7
Concave sliding surfaces 11a, 11 that engage with a, 7a'
a′ is formed. The recessed sliding surface 11a,
One end edge 12a, 12a' of 11a' is the guide part 7.
a, 7a' are brought into contact with each other to restrict the sliding position of the guide portions 7a, 7a' (engaging claws 5a, 5a'). Also,
The one end portion 13 of the through hole 14 is brought into contact with the stop projections 8a, 8a' to restrict the sliding position of the engaging claws 5a, 5a'.

FIG. 4 shows the engaging claws 5a, 5a'
The disk 2 is housed in the through hole 4, and the protection plates 3a and 3b are positioned above and below it. Tapered surfaces 1 provided on the outer peripheries of the protective plates 3a and 3b
7a, 17b are pressed by the engaging claws 5a, 5a', respectively, through the protective plates 3a, 3b,
The disk 2 is fixed to the base 1. The state of the engagement claws 5a, 5a' in this state will be explained with reference to FIG.
a, 11a', and the engaging claws 5a,
5a' is prevented from coming off in the thickness direction of the substrate 1. Also, the edges 16a, 1 of the engaging claws 5a, 5a'
6a' are the terminal edges 15 of the guide recesses 6a and 6a', respectively.
a, 15a' and the engaging claws 5a, 5
The retaining protrusions 8a, 8a' provided at a' contact the end 13 of the through hole 14, thereby preventing the engaging claws 5a, 5a' from sliding. With the above configuration, the disk 2 is housed and fixed on the substrate 1 in a shape that is sandwiched between the protection plates 3a and 3b.

FIG. 5 shows a state in which the disc 2 is placed on the turntable by sliding the engagement claw 5a'.
Insert a release lever (not shown) into a' and bend the end of the engagement claw 6a' in the direction of arrow B, so that the end edge 16a' of the engagement claw and the terminal edge 15a' of the guide recess 6a' After releasing the contact relationship, the state shown in FIG. 5 is achieved by moving in the direction of arrow C. That is, the engagement between the engagement claw 5a' and the protection plate 3b is released, and the disk 2 is separated from the substrate 1 together with the protection plate 3b. In addition, when the engaging claw 5a' is slid in the direction of arrow C, the guide portion 7a' is
Its movement position is regulated by contacting the end edge 12a' of 1a'. Further, although the above explanation has been made only regarding the engaging claws 5a and 5a', the other engaging claws have a similar structure.

FIG. 6 is a schematic diagram of the configuration of a second embodiment of the present invention, in which the protective plate 3a,
Recording surface 18a, 18b only on one side instead of 3b
This embodiment uses single-sided recording disks 2a and 2b having the same structure as that of the first embodiment, and the other configurations are the same as those of the first embodiment, so a description thereof will be omitted. FIG. 7 shows a cross section taken along line DD' in FIG. 6 with the single-sided recording disks 2a, 2b and the disk 2 housed.

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 4. Note that the explanation will be made using the storage container according to the first embodiment. FIG. 8 is an external configuration diagram showing the case 19, chassis 20, dust cover 21, operation switch 22, and indicator 23.
It is made up of.

FIG. 9 shows the configuration after removing the dust cover 21 in FIG.
5. The loading base 26 is fixed to the chassis 20 with a desired gap from the turntable 24, and a lifting ring 28 disposed around the turntable 24 is provided at 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.
and the storage container locking member 30 and each release engagement hole 1 of the storage container's engagement claws 6a to 6d, 6a' to 6d'.
A long hole 34 is provided in which the release pin 23 that engages with 0a to 10d and 10a' to 10d' can move.
The other end of this release pin 33 engages with a cam groove 32 of a disc cam 31 rotatably supported on the loading base 26 coaxially with the through hole 27 (see details of this release pin section). (described later) 36 is a pickup for detecting signals from the disk mentioned above;
35 is its pick-up carriage.

FIG. 10 shows a cross section taken along the line E-E' in FIG.
A gear portion (not shown) that meshes with a gear 39 of a disc cam drive motor 38 attached to the loading board 26 is provided in a part of the loading board 26, and the disc cam 31 is rotated in forward and reverse directions by this drive motor 38. Driven. A vertical screw 40 is attached to the elevating ring 28, and the chassis 20 fits into this.
A rotation preventing means (not shown) is provided for the rotary nut 41 supported by the rotary nut 41, and the elevating ring 28 can be moved up and down in response to the rotation of the rotary nut 41 (the driving source of the rotary nut 41 is (not shown). The other end of the umbrella shaft 25 engages with a cam groove 43 of a drive cam 42, and has a conventional 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.

11 to 13 are detailed operational diagrams of the release pin 33 portion, with FIG. 11 showing the standby position, FIG. 12 showing the intermediate position, and FIG. 13 showing the loading completion position, which will be explained in sequence below.

FIG. 11A is a perspective view of the standby position, FIG. 11B is a sectional view taken along line F-F', and FIG.
11D is a side view of the same, and FIG. 11E is a perspective view showing a support portion of the release pin 33. The release pin 33 has a notch 48 in its upper part, and is housed and held in a boss 50 so as to be able to slide vertically while being biased upward by a spring 49, and is in contact with the disk cam 31 in its lower part. , and a pin 51 having a rotation preventing effect is fixed to the boss 50, thereby preventing the disc cam 31 and the disc cam 3 from rotating.
It has a structure that allows it to be moved up and down in response to upper and lower cams 52 and 54 attached to 1. The boss 50 is fixed to a slide plate 57 that is slidably held in the directions of arrows V and W in the figure by a guide part 56 attached to the loading base 26, and its lower part is fitted into the cam groove 32 of the disc cam 31. When engaged, the disc cam 3
1 is movable along the cam groove 32 in the directions of arrows V and W in the figure. still,
As shown in FIG. 11C, the cam groove 42 is shaped so that it once faces toward the center from the standby position and then toward the outer circumference. Pin 5 is attached to the upper and lower cams 52 and 54.
The inclined part 5 is designed to allow smooth sliding of the
3,55 are provided. In the standby position shown in FIGS. 11A and 11B, the pin 51 rides on the upper and lower cams 54, and therefore the release pin 33 resists the spring 49 and sinks corresponding to the thickness of the upper and lower cams 54. ing. From this state, the disc cam 31 is rotated by the disc cam drive motor 38 in the direction of the arrow x in the figure, resulting in the intermediate position shown in FIG.

FIG. 12A is a perspective view of the intermediate position, and FIG. 12B is a cross section taken along line G-G'.
0 moves along the cam groove 32, the slide plate 57 moves in the direction of arrow V in the figure, and 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 disc 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. 13.

Figure 13A is a perspective view of the loading completed position;
Figure 13B shows the H-H' cross section, and the 12th
As the disc cam 31 rotates from the state shown in the figure, the boss 50 moves along the cam groove 32, the slide plate 57 further moves in the direction of arrow V in the figure, and the pin 51 moves the inclined part 53 of the upper and lower cams 52. It comes into contact with the rising and lowering 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. 14A to 14D are operation diagrams in a state in which the storage container is placed in the first embodiment described above, and the explanation will be given below in sequence with reference to FIGS. 3 to 13.

FIG. 14A 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. be done. As a result, the release engagement hole 9a' of the engagement claw 5a' is disposed directly above the release pin 33. In this state, the release pin 33 is sunk, so it does not interfere with placing and taking out the storage container.From this state, the disc cam 31
is rotated by the disc cam drive motor 38 in the direction of the arrow x in FIG.
4, the release pin 33 is raised by the spring 49 in accordance with the thickness of the upper and lower cams 54, and its tip enters the release engagement hole 9a'.
The boss 50 moves along the cam groove 32, and the slide plate 57 moves in the direction of the arrow w in FIG. 11A. That is, the state shown in FIG. 14B is obtained by moving toward the center of the shape of the cam groove 32 shown in FIG. 11C. 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 shown in FIG. Move to the position where it abuts the release engagement hole 9a' and press the 14th
The state shown in Figure C is reached. During this operation, the release pin 33 is not moved up or down. When the disk cam 31 further rotates from this state, the pin 51 ascends the inclined part 53 of the upper and lower cams 52, and the release pin 33 descends against the spring 49 in accordance with the thickness of the upper and lower cams 52, and the notch is removed. 48 is brought into contact with the engagement claw 5a', and using the flexibility of the engagement claw 5a', the upper part of the 14 The state shown in Figure D is reached. The cam groove shape is such that the slide plate 57 is not moved during this operation. From this state, the disc cam 31
When the boss 50 rotates, the boss 50 moves along the cam groove 32, and the slide plate 57 moves in the direction of the arrow v in FIG.
a' slides on the recessed sliding surface 11a' (see FIG. 3), and the protective plate 3b is released from its engagement with the base plate 1, resulting in the state shown in FIG.
rotation stops. During this operation, the release pin 33 is not moved up or down. As a result, the protective plate 3b
The disk 2 is placed on an umbrella shaft 25. Incidentally, the rotation angle of the disk cam 31 from FIG. 14A to FIG. 14E is determined by, for example, a micro switch (not shown). From the state shown in FIG.
4, and the state becomes ready for playback as shown in FIG. 14F. In this state, the turntable 24 is driven by the drive motor 58, and the pick-up carriage 35 is driven by the feed motor 47 and moved in the radial direction of the disk 2, as shown in FIG. It is 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. Three disks 2 are placed thereon via 3b, and the tray rises to the state shown in FIG. 14G. From this state, the disc cam 31 is reversed by the disc cam drive motor 38, and by performing the above-mentioned series of reverse operations,
Unloading is performed. The above series of operations from FIG. 14A to FIG.
The operations shown in FIGS.
If the back side of the disk is to be recycled, the storage container may be placed upside down and the above-described series of operations may be performed.

Although the first embodiment of the storage container has been described above, regeneration is similarly performed in the second embodiment by performing the above-described series of operations.
However, in the operation from FIG. It has the advantage of being longer.

Although the storage containers in the first and second embodiments described above have each housed three disks, it is clear that any number of disks can be accommodated. In addition, in the first embodiment, the center holes of the protection plates 3a and 3b are connected to the disk 2.
By making the protective plate 3b larger than the center hole, it is possible to have a configuration in which the protective plate 3b is dropped regardless of the umbrella type shaft 25 in the state shown in FIG. 14E.
As a result, the operation of the umbrella shaft 25 from FIG. 14E to FIG. 14E can be completed in one operation.

As described above, by using the storage container according to the present invention, the following effects can be obtained.

Since the disk is protected, dust, fingerprints, etc. will not stick to it.

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

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

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

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

Since there is no need to replace the conventional storage container, the mechanism of the playback device can 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 a sectional view taken along line A-A' in FIG. 1, and FIG. 4
Figure 5A is a perspective view of the same essential part when the recording disc is held, Figure 5B is a sectional view of the same essential part, Figure 5A is a perspective view of the same essential part when the recording disc is released from holding, and Figure 5B is a sectional view of the same essential part. , FIG. 6 is a perspective view showing another embodiment of the recording disk storage container of the present invention, FIG. 7 is a sectional view taken along line D-D' in FIG. 6, and FIGS. This figure shows an embodiment of a playback device using a disk storage container. FIG. 8 is a perspective view showing an embodiment of the playback device main body, FIG. 9 is a partially cutaway perspective view of the same, and FIG. 11A is a perspective view of the main part, B is a side sectional view taken along the F-F' line, C is a plan view of the main part, D is a side view, and H is a side sectional view taken along the E-E' line. A partially cutaway perspective view of the same main part, FIG. 12A is a perspective view in another operating state, B is a side sectional view taken along the line G-G', FIG. 13A is a perspective view in yet another operating state, B is a side sectional view taken along the line H-H', the first
Figures A, B, C, D, E, H, and G are side sectional views of main parts in respective operating states. 1...Storage container base, 2...Record disc, 3a,
3b...Protective plate, 4...Through hole, 6a, 6b, 6
c, 6d...Engagement claws, 7a, 7b...Guide recesses, 10a, 10b...Engagement holes.

Claims (1)

[Scope of Claims] 1. A plurality of recording disks to be stored, two disk-shaped protective plates having a diameter larger than the diameter of the recording disks and having an unrecorded surface on at least one side, and a base made of a rigid material having a through hole larger in diameter than the protective plate; and a base having an unrecorded surface facing each of the uppermost and lowermost recording disks of the plurality of recording disks housed in the through hole. and a fixing means provided on the substrate so as to removably hold the protection plate facing outward on the substrate. 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 its position is regulated and maintained. The recording disk according to claim 2, further comprising an engagement hole that engages with a release pin and bends the engagement claw in a direction to release the engagement claw from one end edge of the guide recess. storage container. 4. The recording disk storage container according to claim 1, wherein the protection plate is made of a recording disk with signals recorded on only one side, with signals recorded on the surface facing the recording disk. 5. The recording disc storage container according to claim 1, wherein the base is substantially quadrilateral, and fixing means are provided at each of its four corners.