JPH0216459Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a disc case that is attached to a disc playback device together with a disc when playing back a disc stored therein.

[Prior art]

Conventional disk cases of this type include floppy disk cases used in office automation equipment and the like. This case encloses the disc in such a way that it is impossible to remove it, and has a hole for bringing the turntable on the equipment side into contact with the disc, and a hole for inserting a magnetic head to read the signals recorded on the disc. It is formed by forming pores. By the way, in some cases, the magnetic head insertion hole is closed with a shutter plate under normal conditions (when the case is not loaded into the device) to prevent dust from entering the case through this hole and to prevent the disk from entering the case. Provided with protection.

Figure 12 shows an example of such a disk case (3-inch compact floppy disk case).
FIG. The disk case shown in this figure is a case in which the disk 2 is enclosed in a space formed inside the case 1 in such a manner that it cannot be taken out.The case 1 has a shaft portion 3 arranged in the center thereof. A shutter plate 5 is provided which is rotatable at the center and can freely open and close the magnetic head insertion hole 4, and the shutter plate 5 has arrows C, 5 along guide grooves 6 formed in the upper and lower cases 1. One end of a release 7 that is movable in the direction D is fixed, and an operating piece 8 is fixed to the other end of the release 7. Furthermore, the shutter plate 5 is biased in the direction of the arrow E in the case 1 through the release 7. A spring 9 is provided to cause the shutter plate 5 to close the hole 4. In this case, the shutter 5 closes the hole 4 under normal conditions,
When the device is loaded, the operating piece 8 moves to the two-dot chain line position, thereby moving the release 7 in the direction of arrow D, which causes the shutter plate 5 to rotate in the direction of arrow F and opening the hole 4. It is something.

By the way, in the above-mentioned disk case, the internal parts such as the shutter plate 5, the release 7, and the spring 9 are all held in place by the case 1 itself, and the internal disk 2 can be replaced. In other words, in some way case 1
If the device is constructed so that it can be opened, all of these internal parts will slide down or move, rendering it completely useless. This is because this disk case configuration does not consider opening the case at all, that is, it does not consider replacing the disk at all. Therefore, such a disk case cannot be used in a case where a disk needs to be replaced, such as a case that can be applied to a compact disk that has conventionally been loaded into a device in a bare state. Furthermore, even if the shutter plate 5 is configured to open and close in the above case,
Since the release 7 or the like is used, there is a drawback that the configuration is complicated and the assembly is complicated.

[Purpose of invention]

The purpose of this invention is to provide a disk case that can be loaded into a disk playback device, and which also allows the disks stored inside to be played when loaded into the device, and which allows the disks to be replaced and is suitable for use with compact disks, etc. It can be used as a disk case, and is equipped with a shutter plate that opens and closes the opening to prevent dust from entering the case, as well as to prevent the shutter plate from slipping off when replacing the disk. To provide a disk case having a simple overall configuration including a shutter plate opening/closing mechanism.

[Structure of the idea]

This idea allows you to freely load disc playback equipment.
Moreover, in a disk case that allows the disk to be played while stored inside the case when loaded into a device, the case is composed of a pair of half cases that are divided into two in the vertical direction with respect to the disk placement surface. , the half cases are connected to each other so as to be rotatable and openable so that the disks can be exchanged, and one of the half cases is formed with an opening through which the pick up head of the device is exposed when loading the device; a shutter part that allows the opening to be opened and closed; and an engaging part that protrudes to the outside and is operated in conjunction with an operating part on the device side so that the shutter part opens the opening. A shutter plate that integrally has a shutter plate is arranged, and this shutter plate is fixed to the side where the opening is formed by a position regulating member that regulates the position of the disc in a rotatable state when the disc is placed in the case. It is characterized by being rotatably held in a state where it does not fall into the half case.

In order to effectively utilize the space inside the case, it is desirable that the shutter plate be configured to be rotatable concentrically with the disk housed inside the case. In this case, the guide member for transferring the case on the device side can be used as the above-mentioned operating portion.

〔Example〕

The embodiment described here is an embodiment in which this invention is applied to the case of a compact disk.

Figures 1 to 7 are diagrams showing the configuration of a disk case A according to this invention, and Figures 8 to 11 show an example of a device (compact disk player) for playing disks stored in the disk case A. FIG.

First, the configuration of the disk case A shown in FIGS. 1 to 7 will be explained. The disk case A is configured so that a disk (compact disk) 31 can be stored in a replaceable and recyclable state. The upper half case 33 and the lower half case 3 are made of transparent synthetic resin.
4 as the main components.

The upper half case 33 has a front wall portion 43, a side wall portion 44, and
45.

Here, a hole 47 is formed in the center of the plate part 42, and a thrust receiving plate fixing hole 48 is formed around this hole 47, and guide grooves 49 and 50 are formed in the surfaces of the side walls 44 and 45, respectively. formed, guide groove 4
A rack gear 51 is formed in the first half of the bottom surface of 9.
A recess 52 is formed at a predetermined location on the bottom of the guide groove 50, a notch 53 is formed at the center of the lower end of the side wall 44, and a shaft 55 is formed at the inner surface of the rear end of the side wall 44, 45. ing.

A clamper 57 is disposed within the hole 47 as shown in FIGS. 1, 3, and 6. The clamper 57 is an annular body having a protrusion 59 whose lower surface is a tapered surface 58. A thrust spring 60 made of spring steel is fixed to the inner surface of the clamper 57, and a ball support is provided at the center of the thrust spring 60. A member 61 is fixed, and this support member 6
A steel ball 63 is fitted into a substantially hemispherical recess 62 formed in 1. Note that the clamper 57, thrust spring 60, and ball support member 61 are integrally formed by insert molding. The clamper 57 and the above-mentioned members fixed thereto align the tapered surface 58 with the hole 4.
It is disposed in such a manner that it is engaged with a tapered surface 64 formed within 7 and cannot fall downward. The portion of the upper half case 33 where the thrust receiving plate fixing hole 48 is formed is a circular recess 65.
A disk-shaped thrust receiving plate 66 is fitted into the recess 65, and a protrusion 67 is formed on the lower surface of the thrust receiving plate 66.
is inserted into the fixing hole 48 and is welded to the upper half case 33 side. Based on this configuration, the clamper 57 and the members fixed thereto cannot escape upward, and rotate around the steel ball 63 that comes into contact with the bottom surface of the recess 68 formed on the lower surface of the thrust receiving plate 66. It is free.

The lower half case 34 has a rear wall 71 formed at the rear end of a rectangular bottom plate 70 and
Connecting wall portions 72 are formed at the left and right ends of 1. Here, the bottom plate part 70 has a turntable insertion hole 73 formed in its center, a laser beam introduction hole 74 (opening) formed in its front part, and two left and right engagement holes for positioning in its rear part. 75 is formed, and an arcuate groove 76 is further formed on the front upper surface. Further, a hole 78 is formed in the connecting wall portion 72 .

A sub-turntable 79 is disposed within the turntable insertion hole 73 of the bottom plate portion 70.
The sub-turntable 79 is a disc-shaped member that clamps the disc 31 in cooperation with the clamper 57, and has a disc mounting wall 8 at the center of its upper surface.
0 is formed, a disk holding wall portion 81 projecting upward is formed on the upper surface of the outer peripheral portion, and an engaging wall portion 83 having a tapered side surface 82 is formed on the lower portion of the outer peripheral portion. This sub turntable 79
is prevented from slipping out downward by engaging with a tapered surface 84 in the insertion hole 73 formed in the bottom plate portion 70. Insertion hole 73 on the top surface of the bottom plate part 70
A circular recess 85 is formed around the flange 85 of the shutter plate 86.
7 (holding part) is inserted. Shutter board 86
Details are shown in FIGS. 1, 3, and 7. The shutter plate 86 has the laser beam introduction hole 74
A shutter portion 89 that opens and closes and prevents the sub-turntable 79 from coming off upward, extends radially outward on the outer periphery of the flange portion 87 that bulges slightly upward on the center hole 88 side. A side plate portion 9 is connected to the shutter portion 89 and extends laterally to the shutter portion 89.
The outer edge 91 of the side plate portion 90 is formed in an arc shape concentric with the center hole 88, and a hook portion 92 is formed at the outer edge of the shutter portion 89. An engaging portion 93 is formed on the. This shutter plate 86 is disposed such that its shutter portion 89 is positioned above the laser beam introduction hole 74 and the flange portion 87 is positioned within the recess 85. A flange member 94 is fixed to the upper surface of the bottom plate portion 70 to prevent the flange portion 87 from slipping out from the recess 85 .

On the other hand, in the groove 76 of the bottom plate part 70, one end is hooked to the end of the groove 76, and the other end is attached to the shutter plate 86.
The shutter spring 9 is latched onto the latching portion 92 of the
5 (biasing member) is provided. This shutter spring 95 is held so as to expand and contract only within the groove 76 by a holding member 97 having a spring holding portion 96 fixed to the bottom plate portion 70.
Based on this configuration, the shutter plate 86 has a concave portion 85
It is freely rotatable in the directions of arrows J and K concentrically with the sub-turntable 79 around a flange portion 87 held inside, and is normally biased by a shutter spring 95 to prevent the shutter portion 89 from firing the laser beam. The light introduction hole 74 is closed. The above-mentioned engaging portion 93 is connected to the bottom plate portion 70 as shown in FIG.
It is located slightly protruding outward from the side edge. Further, the above sub-turntable 79 has an insertion hole 7
Although it can move slightly up and down within the recess 85, it cannot escape upward due to the flange 87 held in the recess 85 and the flange member 94 that restricts the position of the flange 87.

The upper half case 33 and the lower half case 34 formed as described above and to which each of the above members is attached are aligned front and rear, left and right, and positioned as shown in FIG. The left and right shaft portions 55 of the lower half case 34 are inserted into the left and right holes 7.
8 and are connected to each other. Each half case 33, 34 connected in this way can be opened and closed with respect to the shaft portion 55 as shown in FIGS. 1 and 2, but in this case, when the half cases 33, 34 are closed, A recess and a projection (not shown) formed in each half case engage with each other to prevent the half case from opening accidentally. Here, the engaging portion 93 of the shutter plate 86 is
When the half cases 33 and 34 are closed,
It protrudes to the outside from the notch 53 of the upper half case 33.

To explain how to use disk case A with the above configuration, first,
To store the disc 31 inside, open the upper half case 33 and the lower half case 34, and insert the disc 31 into the center hole of the sub-turntable 7.
The mounting wall portion 80 of No. 9 is relatively moved in and attached to the sub-turntable 79. At this time, the shutter plate 86 can be prevented from sliding down by the flange member 94 provided on the lower half case 34, and the sub-turntable 79 can be prevented from sliding down by the shutter plate 86. In addition, since the clamper 57 and its related members are separately held in the upper half case 33 so that they cannot fall off, there is no possibility of unexpected situations such as internal parts of the case slipping off when the upper half case 33 and the lower half case 34 are expanded. There is no risk that this will occur. Then, the upper half case 33 and the lower half case 34 are closed. In this state, the disk 31 is mounted on the mounting wall 80 of the sub-turntable 79 and is held between the holding wall 81 of the sub-turntable 79 and the clamper 57, as shown in FIG. Ru. Figure 6 shows the sub-turntable 7 with disk case A loaded into the device.
9 is shown being pushed upward by the turntable 103, and when the device is not loaded, the disk 31, clamper 57, and sub-turntable 79 are located lower than in the figure. That is, the clamper 57 is urged downward by the force of the thrust spring 60 and presses the disk 31 against the sub-turntable 79 side. Therefore, the sub-turntable 79 has its tapered surface 8
2 is placed in contact with the tapered surface 84 of the lower half case 34 to close the insertion hole 73. As a result, the disk 31 is held between the clamper 57 and the sub-turntable 79 by the biasing force of the spring 60, so that it does not move inadvertently within the case. Furthermore, when the sub-turntable 79 is pushed upward as shown in FIG. 6, the disk 31, clamper 57, and sub-turntable 79 can be rotated around the steel ball 63. Furthermore, when the disk 31 is housed in the disk case A, that is, when the disk 31 is held between the clamper 57 and the sub-turntable 79, the flange portion 87 of the shutter plate 86 is attached to the flange member 94. Since the position of the sub-turntable 79 is similarly restricted by the flange member 94 via the flange portion 87, as a result, as long as the disc 31 is stored in the case A, the disc 31 is There is no chance of inadvertent movement up, down, left or right within case A.

As shown above, move disk 31 to disk case A.
If the disc 31 is stored inside, it is not necessary to directly hold the disc 31 when handling the disc 31, so that fingerprints can be prevented from being attached to the disc 31. In addition, in this disk case A,
Since the insertion hole 73 is closed by the sub-turntable 79 and the laser beam introduction hole 74 is closed by the shutter plate 86, it is possible to cover almost the entire outside of the disk 31, thereby preventing the disk from external force and dust. etc. can be reliably protected from. moreover,
The flange member 94 that regulates the position of the disk 31 when the disk 31 is stored in the disk case A also serves as a member that prevents the shutter plate 86 from sliding off, simplifying the structure and reducing the number of parts. can be achieved.

To take out the disk 31 from the disk case A, open the upper half case 33 and the lower half case 34 in the reverse order to the above and remove the disk 31 from the sub-turntable 79. Thus, in this case A, the disk can be replaced, and the replacement work is extremely easy, and there is no fear of internal parts of the case slipping off.

In this embodiment, the clamper 57, thrust spring 60, and ball support member 61 are integrally molded by insert molding, which reduces the number of parts, facilitates assembly, and reduces costs. The entire structure can be made thin.

The details of the operation of each part when the above-mentioned disk case A is loaded into a device will be described later, but the guide groove 4
Reference numerals 9 and 50 are used as guides to regulate the direction in which the case is transferred, the rack gear 51 is used as a mechanism for transferring the case in cooperation with a pinion gear on the equipment side, and the recess 52 is used to control the position of the case when controlling the transfer of the case. The engaging hole 75 is used to position the case relative to the device when loading the device, and the engaging portion 93 of the shutter plate 86 is used as an operator for opening and closing the laser beam introduction hole 73. Ru.

Next, a description will be given of a device loaded with the above-mentioned disk case A and used to play the disk 31. 8 to 11 are diagrams showing the configuration of device B into which disk case A is loaded. In FIGS. 8 to 11, reference numeral 100 is an exterior case of the device, and a chassis 101 is disposed inside this exterior case 100. A disk motor 102 is attached to the chassis 101,
A turntable 103 is fixed to the rotating shaft. The turntable 103 is formed into a disk shape, and can be engaged with the sub-turntable 79 through the insertion hole 73 of the disk case A so as to transmit power. Further, a loading motor 104 is attached to the chassis 101, and its rotational force is transmitted to a shaft 104 rotatably supported by the chassis 101 via a driving force transmission mechanism.
5. A pinion gear 106 is attached to the shaft 105 so as to be movable in the vertical direction and capable of transmitting power.

Further, left and right location pins 108 are fixed to the chassis 101, and a housing 109 is further fixed to the chassis 101.
is supported. The location pin 108 is
It engages with the engagement hole 75 of the disk case A to position the disk case A. The housing 109 is supported by the chassis 101 using a link 111 and a pin 112.
1 can be rotated to move toward and away from the chassis 101. This housing 109 has holes formed in the portions where the turntable 103, pinion gear 106, location pin 108, and optical head (not shown) attached to the chassis 101 are located. 10
9 protrudes or is exposed above. Further, on the upper surface of this housing 109, there is a guide member 1 having protrusions 114 on the left and right sides thereof.
15 (actuating part) is attached. The guide member 115 positions the protrusion 114 within the guide grooves 49 to 50 of the disk case A and guides the case in the directions of arrows G and H. Further, a micro switch 116 is attached to the upper surface of the housing 109, as shown in FIG.
This switch 116 connects the actuator 117 to the guide groove 50 and recess 52 of the disk case A.
The loading motor 104 is switched on and off by contacting and engaging with it. The housing 109 is urged downward by a clamp spring 118 stretched between the housing 109 and the chassis 101.

A pin 120 is provided at the rear end of the chassis 101.
A lock plate 122 is provided which is rotatable about the center and biased in the direction of arrow I by a lock spring 121. This lock plate 122
When the housing 109 moves upward, its rear edge is engaged with the engagement recess 123 to lock the housing 109 in that position. Further, an eject lever 124 is provided at the rear end of the chassis 101 and is operated by a drive mechanism (not shown) to push the housing 109 upward.

In this device B, various operation commands are issued by operating operation buttons (not shown).

In order to play a disk using the device B described above, first, as described above, place the disk case A containing the disk 31 in the position shown by the two-dot chain line in FIG. and the end of the rack gear 51 contacts the pinion gear 106. Instrument B is initially in the raised position with housing 109 shown in FIG. 11, with locking plate 122 engaged with housing 109. When inserting the disk case A, the protrusion 114 of the guide member 115 is positioned within the guide grooves 49 and 50 to guide the case A in the direction of arrow G. When the actuator 117 comes into contact with the guide groove 50 and is displaced,
The micro switch 116 is switched, and a control circuit (not shown) switches the loading motor 1.
Turn on 04. When the motor 104 is turned on,
At this time, the pinion gear 106 is rotated clockwise in FIG. 8, whereby the pinion gear 106 meshes with the rack gear 51 and the disk case A is further transferred in the direction of arrow G. here,
When the disk case A is inserted and transported in the direction of arrow G using the guide member 115 as a guide, the engaging portion 93 of the shutter plate 86 engages with the guide member 115 as shown in FIG. The shutter plate 86 is rotated in the direction of arrow J against the biasing force of the shutter spring 95, and the shutter portion 86 is rotated in the direction of arrow J.
The laser beam introduction hole 74, which had been closed, opens. The opening/closing operation of the shutter plate 86 is performed by direct engagement between the engaging portion 93 of the shutter plate and the guide member 115 on the equipment side, so the structure is simple and the operation itself is reliable. Sexuality also improves.

When the disk case A is transferred to the position shown by the solid line in FIGS. 8 and 10, it pushes the upper end of the lock plate 122, causing the lock plate 122 and the housing
Disengage from 9. On the other hand, at this time, the actuator 117 of the micro switch 116 engages with the recess 52 of the disk case A, and the control circuit turns off the loading motor 104. When the lock plate 122 is removed from the housing 109, the housing 109 is moved downward by the biasing force of the clamp spring 118. At this time, the turntable 103 relatively enters into the case through the insertion hole 73 of the disk case A, and engages with the lower surface of the sub-turntable 79 as shown in FIG. In addition, the left and right location pins 108 are connected to the engagement holes 75 of the disk case A.
to hold the case in place.

If the play button is operated here, the disk motor 102 is turned on and the turntable 103 is rotated, and this rotational force is transmitted to the sub-turntable 79 to rotate the disk 31. Here, the optical head irradiates the disk 31 with a laser beam from the chassis 101 side through the laser beam introduction hole 74 of the disk case A, detects the reflected light, and irradiates the disk 31 with a laser beam.
Read the signal recorded in 1. This signal is reproduced as an acoustic signal through a reproduction circuit, an amplifier, etc. (not shown).

Further, in order to take out the disc case A after finishing playing the disc 31, the eject button is operated. This causes the drive mechanism to
24 is driven downward to raise the housing 109, and the lock plate 122 is engaged with the housing 109 by the biasing force of the spring 121 to hold it in the raised position. At this time, the control circuit turns on the loading motor 104, causing the pinion gear 106 to rotate in the opposite direction to the above, thereby moving the disk case A in the H direction. This movement stops when the actuator 117 of the microswitch 116 leaves the guide groove 50. Note that when the disk case A is removed from the device B, the shutter plate 86 is attached to the spring 95.
is urged to rotate in the direction of arrow K shown in Fig. 7,
This shutter plate 86 closes the laser light introduction hole 74.

Thus, the above disk case A can be used as device B.
The disc 31 can be automatically loaded into the disc 31, and the disc 31 can be played while being loaded into the device B.

[Effects of the invention] According to this invention, since the disks are replaceable, it can be used as a case for storing and reproducing disks such as compact disks, which were conventionally used in a bare state. Since a shutter plate is provided to open and close the case, the shutter plate can prevent dust from entering the case, and the disk position regulating member can prevent the shutter plate from falling off when replacing the disk. Effects such as the simplicity of the overall configuration including the opening/closing mechanism of the shutter plate can be obtained.

[Brief explanation of drawings]

1 to 7 are views showing the structure of a disk case A shown as an embodiment of this invention, in which FIG. 1 is a perspective view showing the upper half case and the lower half case in an open state; Fig. 2 is a perspective view showing the closed state, Fig. 3 is an exploded perspective view, Fig. 4 is a sectional view taken from Fig. 3, and Fig. 5 is a sectional view taken from Fig. 3.
6 is an enlarged sectional view of the part that supports the disk, FIG. 7 is an explanatory view explaining the function of the shutter plate, and FIGS. 8 to 11 are views of the disk with disk case A loaded. FIG. 8 is a diagram showing the configuration of device B that performs playback, and FIG.
A plan view of the main parts of device B loaded with
Fig. 10 is a side view taken from the line shown in Fig. 8, and Fig. 11 is a view of equipment B as seen from the line direction shown in Fig. 8, showing the state in which the housing is raised. , FIG. 12 is a plan view of the main parts of a conventional disk case. A...Disk case, B...Equipment, 31...
Disc, 33... Upper half case, 34... Lower half case, 49, 50... Guide groove, 74...
...Opening part (laser light introduction hole), 79...Sub turntable, 86...Shutter plate, 87...Holding part (flange part), 89...Shutter part, 93...
...Engaging portion, 94...Position regulating member (flange member), 95...Biasing member (shutter spring),
103...Turntable, 115... Operating section (guide member).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A disk case that can be freely loaded into a disk playback device and that allows the disk to be played while stored inside the case when loaded into the device. It consists of a pair of half cases that are divided into two in the vertical direction with respect to the arrangement surface, and each half case is connected to each other so that it can be rotated to open and close, so that the disk can be replaced. a shutter portion that is formed with an opening that allows the pick-up head of the device to be viewed when loading the device, and that allows the opening to be opened and closed with respect to the opening;
A shutter plate is disposed that integrally has an externally protruding engagement portion that is operated in conjunction with an operating portion on the device side so that the shutter portion opens the opening, and this shutter plate is connected to the case. With a position regulating member that regulates the position of the disc in a rotatable state when the disc is placed inside,
A disk case characterized in that the disk case is rotatably held in the half case on the side where the opening is formed so as not to fall off. (2) The disk case according to claim 1, wherein the shutter plate is configured to be rotatable concentrically with a disk housed inside the case. (3) Utility model registration claim 1, characterized in that a guide groove is formed on the surface of the case for transporting equipment when loading the case, and the engaging portion is located within the guide groove. Disk case as described.