JPS60217576A - Disc case - Google Patents

Abstract

PURPOSE:To set a disc to a reproducing device together with its case to improve the utility by providing a subturntable, a disc clipping plate, and a main turntable insertion hole in the case where the disc is stored. CONSTITUTION:When a disc 31 is arranged on an insertion hole 50 of a lower case 33 through a subturntable 73 and upper and lower cases 32 and 33 are closed, the disc 31 is centered by a clipping plate 55 energized by a spring 65 and the turntable 73 and is held without play. Consequently, the outside of the disc is covered, and it is protected from external force, dust, etc. Next, the case is inserted into the reproducing device; and when the center of its turntable 105 is allowed to coincide with the center of the hole 50 of the lower case to drive the device, each member is rotated smoothly by a steel ball 68 to reprodue the disc. Thus, replacement of the disc 31 is made easy to improve the utility and the convenience for use, and any kind of disc can be loaded.

Description

[Detailed Description of the Invention] [Industrial Application Field] When playing the disc stored inside these four folding screens,
The present invention relates to a disc case that is installed together with a disc in a disc playback device.

[Prior art]

Conventionally, similar disk cases of this type include floppy disk cases (cartridges) used in various office automation equipment, but these cases usually have a bare disk or a hub in the center of the disk. It is constructed of hard plastic so that it can be enclosed in the attached state and always handled with the disc. That is, in these cases, the disk and the case are essentially inseparable, and cannot be used as a general-purpose disk case that is constructed completely independently of the disk.

By the way, in the field of digital audio, which has been making remarkable progress in recent years, compact discs that use a specific signal recording and playback method are being provided, but conventional compact disc players are used by inserting the disc into the device without exposing it. This format was adopted, and there has not yet been anything that allows this disc to be stored in a disc case and used.

This is due to the fact that no disc case has been provided that has sufficiently taken into consideration the conventional disc usage format and has constituent sounds suitable for this type of usage.

One of the reasons for this is that when the disc is attached to the equipment along with the gold disc case, all internal discs are properly fixed to the equipment's turntable.

This is because it is difficult to realize a structure that allows all of these disk cases to freely rotate without any trouble by using only the disk case side.

[Purpose of the invention]

An object of the present invention is to provide a general-purpose disk case that can be used for all types of disks, including compact disks, and that can be used by attaching each disk stored in a replaceable manner to a device. It is in.

[Structure of the invention]

This invention has a disc holding part in the case and a sub-turntable that can be connected to the main turntable on the device side.The sub-turntable allows the disc in the case and the turntable side of the device to be connected to each other. This rationally realizes the connection with

In one aspect of the invention, a clamping plate is disposed within the case to clamp the disc in cooperation with the sub-turntable. Also, in the above case.

A thrust spring is disposed that acts as a clamping force and provides a clamping force for clamping the disc between the clamping plate and the sub-turntable. Also.

Inside the above case is a sub-turntable and a holding plate.

A steel pole is installed to rotatably support the thrust spring.

〔Example〕

This embodiment is an example in which the present invention is applied to a compact disc case.

1 to 6 are diagrams showing the configuration of a disc case A according to the present invention, and FIG. 7 and FIG. - shows an example;

First, to explain the configuration of the disk case A shown in FIGS. 1 to 6, the disk case A has a disk (
A member that stores a compact disc (compact disc) 31, connects an upper case 32 and a lower case 33 so as to be openable and closable, and rotatably supports the disc 31 therein. It is something that is arranged. The upper case 32 has a rectangular top plate portion 34.
Front and rear walls 35-36 and left and right side walls 37 are provided on the lower surface of the periphery of the
．． 38 is made of cedar, and a hole 39 is further formed in the center of the top plate part 34. In this case, the rear wall portion 36 has a front-to-back width that is wider than the other wall, and a downward protrusion dimension that is larger than the other wall I! i5↓ is slightly larger. The details of the portion of the top plate portion 34 where the hole 39 is formed are shown in FIG. 9.

It is shown in FIG. As shown in these figures.

The lower surface of the portion of the top plate s34 where the hole 39 is formed bulges downward, and the hole 39 has a hole 39a that opens upward, and a hole 39b that is slightly smaller in diameter than the hole 39a. This hole 39b is formed by a hole 39c having a slightly smaller diameter and penetrating in the vertical direction. In the following description, the portion where the hole 39b is formed will be referred to as the mounting wall portion 43.
, the portion in which the hole portion 39c is formed is referred to as a retaining wall portion 44. Furthermore, connecting holes 45 are formed in both the left and right side surfaces of the rear wall portion 36, and the side wall portion 37 near the front wall portion 35.
A retaining hole 46 is formed on the side surface of the valley 38.

The lower case 33 has left and right side walls 48 and 49 formed on the upper surfaces of both left and right edges of a rectangular bottom plate 47, and an insertion hole 50 for a turntable of the device in the center of the bottom plate 47. An introduction hole 51 is formed therein.

In this case, the rear end portions of the side wall portions 48 and 49 protrude rearward by a predetermined distance from the rear end surface of the bottom plate portion 47. Here, the dimensions between the left and right side walls 48 and 49 are such that the upper case 32 can be accommodated as shown in FIG.
The length in the front-back direction is equal to the length of the upper case 32 in the front-back direction. The insertion hole 50 of the bottom plate part 47 has a tapered part 50a whose diameter gradually decreases downward from the top surface of the bottom plate part 47, as shown in FIGS. It consists of a diameter portion 50b having the same length.

Furthermore, support shafts 52 projecting inward are formed on the inner surfaces of the rear ends of the side walls 48 and 49, and retaining projections 53 are formed on the inner surfaces of the front ends.

The upper case 32 and the lower case 33 are arranged such that the upper case 32 is located within the left and right side walls 4B-49 of the lower case 33, and the left and right support shafts 52 of the lower case 33 are mounted on the left and right sides of the upper case 32. The cases 32 and 33 are connected to each other by engaging with the connection hole 45, and can be opened and closed about the support shaft 52 mentioned above. Here, when the cases 32 and 33 are closed, the internal space of the upper case 32 is closed by being inserted into the bottom plate portion 47 of the lower case 33, as shown in FIG. Further, at this time, the engagement protrusion 53 of the lower case 33 engages with the engagement hole 46 of the upper case 32, so that these cases 32 and 33 will not be opened inadvertently.

A clamping plate 55, which is one member for clamping the disk 31, is attached to the upper case 32.
The clamping plate 55 is formed into a disk shape, and the center portion of its main wall portion 55a is a retaining portion 56 that bulges downward, as shown in FIGS. Q and J. An annular protruding wall part 57 that protrudes upward and an annular clamping wall part 58 that protrudes downward are formed on the peripheral edge of the main wall part 55.
A protrusion 1flS59 is formed on the upper surface of the central portion of the holding plate 55 (the central portion of the entire holding plate 55), and a retaining wall portion 60 that protrudes outward in the radial direction of the holding plate 55 is formed on the outer periphery of the protruding wall portion 57. is formed, and the outer peripheral portion of the lower surface of the retaining portion 56 is a tapered surface 6e. The holding plate 55 is disposed within the hole 39c of the hole 39, with its engaging wall 60 engaged with the upper surface of the engaging wall 44 of the upper case 32.

A thrust spring 65 is mounted on the upper surface of the clamping plate 55.
is installed. The thrust spring 65 is formed by forming a plate made of spring steel into a cross shape, with the tips of each protrusion 66 bent upward and downward, and a hole 67 formed in the center. The thrust spring 65 is attached to the upper surface of the main wall 55a of the clamping plate 55 with the tip of the protrusion 466 engaged with the inner surface of the protrusion wall 57.

A steel ball 68 is placed in the hole 67 of the thrust spring 65, and the steel ball 68 is pressed downward by a thrust receiving plate 69 fixed to the upper case 32. In this case, a short cylindrical holding recess 70 is formed on the lower surface of the receiving plate 69, and the lower surface of this holding recess 70 is chamfered in the shape of a tenon. held within.

Further, the receiving plate 69 is a circular plate body, and the upper case 32
1 is inserted into the hole 39a of the hole 39, and its peripheral edge is fixed to the upper case 32 using adhesive means.

Based on the above configuration, the clamping plate 55 cannot be pulled out from inside the hole 39. This clamping plate 55 is always biased downward by a thrust spring 65, and in the normal state, the clamping plate 55 is
As shown in the figure, the retaining wall portion 60 is brought into engagement with the upper surface of the engaging wall g44 of the upper case 32. Further, when the disk case A is loaded into the device as described later, the holding plate 55 is relatively pressed upward by the turntable 103 as shown in FIG.
is moved upward while being sandwiched between it and a sub-turntable 73 (to be described later), and the engagement wall portion 60 is placed in a state separated from the engagement wall portion 44. In this state, the clamping plate 55 and the thrust spring 65 can rotate around the steel ball 68 that contacts the lower surface of the holding recess 70 of the receiving plate 69.

Further, a sub-turntable 73 is arranged within the insertion hole 50 of the lower case 33. sub turntable 73
is a disc-shaped member on which the disc 31 is mounted, and also serves as a lid for closing the insertion hole 50 of the lower case 33. The diameter of the main wall 73a of the sub-turntable 73 is approximately the same as the diameter of the main wall 55a of the clamping plate 55. The main wall 73a has an annular disk mounting wall 74 formed at the center of its upper surface that projects upward, a clamping wall 75 that projects upward at the periphery of its upper surface, and a holding wall 75 that extends downward from its lower surface. An annular groove 77 having a tapered surface 76 whose diameter increases is formed. The diameter of the lower part of the outer circumferential surface of the main wall portion 73a decreases downward to form a naltaba 1fr78. The outer diameter of the disk mounting wall portion 74 is such that it can be inserted into the center hole of the disk 31 without any looseness, and the inner surface is designed to allow the tapered direction 61 of the engaging portion 56 of the clamping plate 55 to fit loosely. It has a tapered surface 79.

This disk mounting wall portion 74 and the clamping wall portion 75 constitute a disk holding portion. The sub-turntable 73 having such a shape is normally disposed in the hole 50 of the lower case 33 with the taper direction 78 engaged with the tapered surface 50a as shown in FIG.

Next, the configuration of the device B shown in FIGS. 7 and 8 will be described. In the figures, reference numeral 100 is an exterior case of the device, and a chassis 101 is disposed inside this exterior case 100. A motor 102 is fixed to the chassis 101, and a turntable 10 is attached to the rotating shaft of the motor 102.
3 is fixed. The turntable 103 is formed in the shape of a disk, and has a tapered surface 104 on its upper surface that can engage with a groove 76 formed on the lower surface of the sub-turntable 73 of the disk case A, as shown in FIG. An annular protrusion 105 is formed.

Furthermore, a tray 106 is supported on the upper surface of the chassis 101 for transferring the disk case A from the outside to the inside of the outer case 100 and vice versa, and furthermore, a tray 106 is supported for transferring the disk case A from the outside to the inside of the outer case 100 and vice versa. A clamper 107 is provided for urging the turntable 103 onto the turntable 103. The tray 106 has a disk mounting section 10 on its upper surface.
8, and the outer case 10 shown in solid line in FIG.
The device can be moved in the directions of arrows A and B between the position where it is housed in the case 100 and the position where it is pulled out through the opening st- formed in the exterior case 100 shown by the two-dot chain line in the same figure. ing. The clamper 107 is mounted on a fulcrum 11 between the position where the disc case A is fixed to the turntable 103 as shown by the solid line in FIG.
It is designed to be able to rotate in the directions of arrows C and D centering on 0.

The tray 106 and the clamper 107 are configured to move synchronously between the above positions using a drive mechanism (not shown). Also tray 106
In this case, the folding dimension is raised in the normal state of the disk case A'Th placed on the disk mounting 6108, and only when this disk case A is moved above the turntable 103 is this t placed on the turntable 103. An elevating mechanism (not shown) for lowering is provided. Also,
An optical head 111 for reading signals recorded on the disk is attached to the chassis 101 described above.

Note that commands for operating the tray 106, the clamper 107, the play operation, and other devices are made by operating operation buttons (not shown).

Next, a method of handling the above-mentioned disc case A and a method of playing a disc stored in the disc case A will be explained.

First, to explain how to handle the disk case A, in order to store the disk 31 in the disk case A, hold the upper case 32 and the lower case 33 separately, and then move these cases 3133 around the support shaft 52. It rotates and expands. and.

The disk 31 (1-) is mounted on the upper surface of the sub-turntable 73 disposed in the insertion hole 50 of the lower case 33. That is, the disk mounting wall 74 of the sub-turntable 73 is placed relative to the center hole of the disk 31. Insert directly.

Then, the case 3133 is 1 g around the support shaft 52.
Close these cases 32 and 33 as shown in Figure 1. Here, the cases 32 and 33 are locked in a closed state by the engagement between the engagement protrusion 53 of the case 33 and the engagement hole 46 of the case 32.

The disc 31 stored in the disc case A as described above is placed on the sub-turntable 7 as shown in FIG.
The sub-turntable 73 is clamped between the clamping wall 75 of the sub-turntable 73 and the clamping wall 58 of the clamping plate 55 while being attached to the disc mounting wall 74 of the sub-turntable 73 . In other words, since the clamping plate 55 attached to the upper case 32 is pressed downward by the thrust spring 65, the disc 31 is pressed against the clamping wall 75 of the sub turntable 73 by its clamping wall 58, In this case, the tapered surface 78 of the sub-turntable 73 is connected to the tapered part 5 of the lower case 33.
0a and cooperates with this sub-turntable 73 to clamp the disc 31't at that position. In this case, as the holding plate 255 presses the disk 31 downward, the holding portion 56 is loosely fitted into the inside of the disk mounting wall @74 of the sub-turntable 73. Here, the outer peripheral surface of the retainer s56 and the inner surface of the disk mounting wall portion 74 are tapered surfaces 61
1.79, even if the centers of the holding plate 55 and the sub-turntable 73 are misaligned, the taper surface 6
1.79 guide each other to center the holding plate 55 and the sub-turntable 73.

Disc case A that stores the disc 31 in the above 19
Since each part covers substantially the entire outside of the disk 31, the disk 31 can be protected from external force, temperature, dust, etc. At this time, the sub-turntable 73 in particular acts to close the insertion hole 50 of the lower case 33 to ensure the above protection. Furthermore, since the disk 31t'' is held between the holding plate 55 and the sub-turntable 73, the disk 31 can be held without wobbling.

Also, to take out the disk 31τ from the disk case A in which the disk 31 is stored as described above.

The upper case 32 and the lower case 33 may be opened in the reverse order to the above, and the disc ait- may be removed from the sub-turntable 73.

Next, a method for reproducing the disc 31 will be explained.

First, operate the tray drawer operation button of the first device B to move the tray 106 in the direction of arrow A to expose the disk mounting section 108 of this tray 106 to the outside of the outer case 100. Disk 3 as above
1t- Place the stored disc case A. and,
Operate the operation button for storing the tray and move the tray 106 in the direction of arrow B.
direction and move disc case A to turntable 1.
Reach above 03.

Here, the clamper 107 rotates in the direction of arrow C from the position shown by the two-dot chain line in conjunction with the movement of the tray 106, and when the movement of the tray 106 stops and the disc case A is located above the turntable 103. Then press this disc case A/l onto the turntable 103.

At this time, in the disc case A, as shown in FIG.
The clamper 107
The turntable 103 is relatively inserted into the insertion hole 50 of the workpiece 9 by being pressed downward by. At this time, the turntable 103 comes into contact with the lower surface of the sub-turntable 73 that closes the insertion hole 50, and the thrust spring 6
5, the sub-turntable 73-disk 31 and the clamping plate 55t-are relatively raised by a certain dimension. When the turntable 103 comes into contact with the sub-turntable 73, the annular protrusion 105 of the turntable 103 engages in #77 of the sub-turntable 73, and at this time, the tapered surface 104 guides the tapered surface 76t. The sub-turntable 73 is centered with respect to the turntable 103, that is, the disk 31 is centered.

In this way, the disc case A is in contact with the sub-turntable 73 and the turntable 103 when the clamper 10
7 and the turntable 103. In this state, the engagement wall portion 60 of the clamping plate 55 and the tapered surface 78 of the saptane tape lure 3 are moved upward by a predetermined distance from the engagement wall portion 44 of the upper case 32 and the tapered portion 50a of the lower case 33, respectively. located at a distance. Further, the clamping plate 55 and the sub-turntable 73 clamp the disk with a strong force because the biasing force of the thrust spring 65 is increased.

If the play button is operated after the above-mentioned work disc 31 work disc case A is loaded into the device body B, the motor 102 will start and the turntable 103 will rotate.
As a result, the disc 31 is connected to the sub-turntable 73,
Clamp plate 55, thrust spring 65. Rotating together with the steel ball 68, the optical head 111 irradiates the disk 31 with a laser beam through the laser beam introduction hole 51, detects the reflected light again, and detects the signal 4r distributed on the disk 31.
Reading and reproduction of the disc 31 are performed.

In this way, if you build the above-mentioned take case AK.

When the disk 31 is inserted into the inside and loaded into the device B, the disk 31 is held by the sub-turntable 73 and the holding plate 55, and these are connected to the turntable 103 in a rotatable state as a whole. Therefore, the disk 31 can be reliably fixed to the turntable 1030111, and two rotational forces can be transmitted. Furthermore, since the rotational frictional resistance of the steel ball 68 against the upper case 32 is extremely small, each member holding the disk 31t can be smoothly rotated. Therefore, the disc 31 can be played back smoothly.

In addition to the configuration of the above embodiment, if the laser introduction hole 51 of the Shimonoseki case 33 is configured to be covered with a transparent plate, it is possible to more reliably prevent dust and the like from entering the case. can.

〔Effect of the invention〕

According to this invention VC, a sub-turntable for holding a disc is arranged in one case, and this sub-turntable is configured to be connected to a turntable of a device.
The disk can be accurately fixed to the turntable side by the sub-turntable, and the configuration can be configured such that one rotational force can be transmitted.

Therefore, no matter what kind of disk the target disk is, it is possible to easily realize a disk playback device in which the entire disk case is loaded.

[Brief explanation of drawings]

1 to 6 are diagrams showing the structure of a disc case A shown as an embodiment of the present invention, in which FIG. 1 is a perspective view of the disc case A with its back surface facing up; is an exploded perspective view of disc case A, Figure 3 is a perspective view of disc case A when the back side of the upper case is facing up, and Figure 9 is a main part of disc case A that stores discs (see Figure 1). Fig. 5 is an enlarged cross-sectional view of the disc case containing the disc (the section viewed from the line -■), and the main part (Fig. 1 IV-ft/
Fig. 6 is an enlarged sectional view of the disk case t-
The laser beam introduction hole section when placed in the same state as in Figure S (
FIG. 1 is an enlarged cross-sectional view taken along line Vl-Vl), FIGS. A plan view showing the schematic configuration of the main part of device B, Figure 8 is similar to Figure 7 ■-■
FIG. A: Disk case, B: Equipment,
31... Disc, 32... Upper case, 33... Lower case, 50... Insertion hole, 55... Holding plate, 65... Thrust spring, 68... Steel ball, 7
3...Sub turntable, 74...
Disc mounting wall part (disc holding part), 75...
- Holding wall part (disk holding part). Applicant Nippon Qinki Manufacturing Co., Ltd. Figure 1

Claims (1)

[Claims] (/2 The device comprises a case in which a disc is housed and a sub-turntable disposed within the case, and a main turntable of a device for playing the disc is inserted into the case. A disc case characterized in that the sub-turntable has a disc holding portion and is configured to be connectable to the main turntable. A disc case according to claim 1, characterized in that a clamping plate is disposed that cooperates with a turntable to clamp the disc. The disc case according to claim 2, further comprising a thrust spring that provides a clamping force for clamping the disc between the clamping plate and the sub-turntable. 4t) The disc case according to claim 3, wherein a steel ball for rotatably supporting the sub-turntable, a clamping plate, and a thrust spring is disposed in the case.