JPS6182368A - Recording disc playback device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a disk-shaped recording medium (hereinafter referred to as a disk).
This invention relates to a recording disc 1η playback device that automatically plays a disc by taking out the disc from a disc case containing the disc.

Conventional configuration and its problems Conventionally, take out the disk case and V-redisc,
Video disc playback devices can only play back discs of a certain size, and cannot play back two types of discs, such as audio discs, for example. For this reason, even short-time recordings are recorded on disks with a diameter larger than necessary, resulting in high costs and hindering the widespread use of video disks in the market.

Therefore, we have proposed a recording disk reproducing device as shown below, which is the basis of this invention. An example of this proposal is shown in Figure 1 (1-2).
It is shown in FIG. First, the outline will be explained. 1. The playback device main body 50 shown in the figure is composed of a shell 40, an exterior case 50a, a turntable 130, and an arm housing 120. The arm housing 120 is equipped with a 1lff raw head. A fixed base 80 is fixed to the chassis 40.
Case 0.

An engaging portion (AC3) serving as an engaging means is movably mounted on the fixed base 80.A case expander side 60 for opening a portion of the case 2 is further provided on the fixed base 80. The chassis 40 further includes a longitudinal direction (Xl).

A movable base 91 is provided which can move freely in the X2 direction). The movable base 91 is provided with a disc clamping mechanism 90 and lid parts 99, 100, which allow the discs 6° 500, which have different diameters from the cases 2 and 5, to be pulled onto the turntable 130 along with the discs 3,502. , and one stage for transporting the case 2 and collecting it from the turntable 130. The release mechanism 508 is supported by a pin 520 provided on the chassis 40 so as to be rotatable in directions E and E2.

Next, the whole will be explained in detail.

FIGS. 1 to 4 respectively show the configurations of two types of diameter disks and disk cases that can be used in the recording disk reproducing apparatus according to this proposed example. Figure 1,
(A, r3) and (C, I')) are each the diameter L2. L
3 shows two types of discs. Inner diameter l, 1,
Thickness]'l+T2 is common and outer diameter L2. Only L3 is different, L2>L, 3.

Next, I will explain the disc case and lid. Figure 4 (A
) and (B) are disk 2. disk 500
Shown is the stored state. Comparing both cases, the widths of disc entrances I and L are the same, but the depth is different (L).
Dl>LD2.

In FIG. 4(A), reference numeral 15 denotes a rib, which restricts the play of the disk 6 in the vertical direction within the case 2. In FIG. 4(B), 503a.

Reference numerals 503b each indicate a rib, which restricts the lateral play of the disk 500 housed in the case 501. The protruding portion 530 indicates the difference in the disk diameter, and by detecting this protruding portion 530, the first toss isochi 525 (FIG. 6(A)) installed in the regeneration device main body 50, It is identified that the disc 500 is a small diameter disc. Therefore, number 11 is not provided in case 2. The lids 3 and 502 have different curvatures in the portion facing the disk (i, 500). Also, the i-sound 502 has a disk 6.
A cutout 605 is provided to distinguish between the diameters of 500 and 605, but their functions are the same.

Additionally, the protruding portion 530 described by +jif is such that the small i¥ disc case 501 cannot be inserted into a conventional playback device (the disc was pulled out semi-automatically each time the case was inserted deep into the playback device). Role of regulatory measures to enable 1-1
There is also. I have compared both cases above, and the lid and case function are the same.

Therefore, here, case 2. Only the lid 3 will be explained.

The disk 6 has a center hole 34, and is provided with a ten-shaped peripheral group guard 33 and an inner peripheral group guard 32. In FIG. 2, a rectangular disk case 1 is removably connected to a disk case body 2 (hereinafter referred to as the case) and an opening 7 provided on the front side of the case 2 in the insertion direction X into the device. Lid 3
It is composed of.

The case 2 and the lid 3 are made of styrene resin, for example. The interior of the case 2 is a flat disk storage space 5 over its entire width and length, and a disk 6 is stored within this space 5. This space 5 has the opening 7 on the insertion direction Xl side, and is closed on the remaining three sides. As shown in the figure, the case 2 includes a flat plate part 8 having groove-like recesses 17 on the left and right sides, and protrusions 9, 10.1 along the three sides of the flat plate part 8.
1 and more. At the center near the opening 7 is a lid 3 which will be described later.
An engagement hole 13 is formed in which the convex portion of the opening 7 engages.
Engagement holes 16 are formed on the left and right sides of the lid 3, into which the protrusions of the lid 3 engage.

The end of the lid 3 is provided with a flange portion 18 that closes the opening 7 of the case 2 when the lid 3 is engaged and fixed to the case 2.
and the expansion member described below enters symmetrically to the center line (1).
A notch 19 is provided that allows the user to move freely.

A leaf spring 25 is provided at the end of the lid 3 and has a protrusion 24 at its tip that engages with the aforementioned engagement hole 16 and fixes the lid 3 to the case 2 . At the tip of the protrusion 24, a slanted portion 26 is provided around 1 to engage with the release member of the lid 3. FIG. 3 shows a state in which the disc 6 and the lid 3 are assembled into the case 2, and the disc 6 is locked in the depth and width directions. Furthermore, since the lid 3 engages with the case 2 to close the opening 7, the disc 6 is housed without falling out of the case 2.

FIG. 4 is a detailed view of the lid 3, in which the shape of the lid 3 facing the disk 6 is, for example, a circular arc in which the gaps at both ends are larger than the gap a in the center. This is to ensure stable operation even if the relative positions of the lid 3 and the disk 6 are slightly shifted in the Z direction during endogenous operation, which will be described later.

FIGS. 5 and 6 show a recording disk reproducing apparatus of this proposed example. FIG. 5 shows the external appearance of the recording disk reproducing apparatus. As shown in the figure, a case insertion opening 51 is provided in the outer case 50a of the reproducing apparatus main body 50. Reference numeral 525 is a photoswitch that detects a protrusion 530 provided on the case 501 that indicates the difference in the diameter of the disc, and detects that the small diameter disc 500 has been inserted. Figure 6 (A) ~
The figure (C) shows the basic configuration of a recording disc reproducing apparatus, in which a disc 6 or 500 is placed and brought into a reproducing state. 610 is a microsinch for disc diameter identification. When the large diameter disc 6 is inserted, the microswitch 610 is turned on by the lid 3, but when the small diameter disc 500 is inserted, the microswitch The disc 10 is in a cut state, so that the difference in disc diameter can be identified.

Reference numeral 131 has a center boss, which centers the disk 6 or 500 placed on the turntable 130. Reference numeral 132 denotes a clamp, which presses the disk 6 or 500 placed on the turntable 130 against the turntable 130. 40 is a chassis, to which 52 and 53 for guiding the case 2 into the playback device main body 50 are fixed. Guides 52a and 53a are guide grooves. The guide 53 has a photo switch 5
25 is provided outside 153a. Reference numeral 60 denotes a case expansion mechanism, which opens the chassis 4 near the case insertion opening 51.
Fixed above 0. Reference numeral 66 denotes an expansion member that is supported by the fixed base 80 so as to be able to move up and down.
Expand 1. Fixed base 80 is fixed to chassis 40. The engaging member 62 is attached to a fixed base 80 with a shaft 74 . It is rotatably supported by a bearing 63 and functions to engage with the engagement hole 13 of the case 2 or 501. 90 is a disk holding mechanism. 95 is a two-side clamp arm, which is formed integrally with the movable base 91. A lower clamp arm 96 is rotatably supported by a bearing 97, and the disk 6 is clamped between these arms. 99
, 100 is a lid fixing member, which is supported by pins 105 and 106 so as to be horizontally rotatable with respect to the movable base 91, and engages with the notch 19 of the lid 3 to lock the lid 3. . A leaf spring 94 is attached to the movable base 91 at a position where it contacts the lid 3.

Reference numerals 107 and 108 designate claw-shaped release members integrally formed with the movable base 91, which function to engage with the slope 26 of the protrusion 24 of the lid 3 to release the engagement between the lid 3 and the case 2.

The movable base 91 of the disk clamping mechanism 90 has rails 45,
46 and 47 so as to be movable in the front and rear directions (x, x2 directions). The rail 45 has grooves on both sides as shown in FIG. 6(B), and a roller 92 rotatably provided on a movable base 91 fits into the groove of the rail 45. Therefore, the disk holding mechanism 90 is
6. It will never deviate from /17. The movable base 91 is fixed to the belt III by a connecting piece. Held 11
1 is hung between gears 112 and 113, and drives the heald 111 by a motor 114 with a reduction gear.
The disk holding mechanism 90 is transferred. The movable base 91 is provided with a switch plate 515 (illustrated at 1°4 in the figure, see FIG. 7) for switching the claws 1 to 513 and 514 fixed to the sawmill 40. Board 51
5 is blocking 11, +1111 J base 9
1 is configured to detect the position of 1.

In the 61st section I(C)l, 50B is a release mechanism for releasing the state in which the holding mechanism 90 is holding the disk. Release mechanism 508 and slope 510. It is composed of a lever 509 and a rotating lever 511, and is supported by a pin 520 so as to be rotatable in the l':I and E2 force directions.

The rotation lever 511 is connected via a wire 512 to a lever 515 provided on the elevating mechanism 134, and is configured to rotate in conjunction with the operation of the elevating mechanism.

j2.0 is an arm housing, rail]26, shaft +22, turntable]30, -1=
is supported so as to be movable in the left and right directions (Yl, Y2 bidirectionally). Similarly to the disk holding mechanism 90, the arm housing 120 also has a turn tape/l/] 30-
It is configured to be transported in parallel over the disks 6 placed on the disks 6 and 6, and to pick up the signals from the disks 6.

In FIG. 6(C), 180 is a boat that supports the disk 6, and a shaft 181. By bearing 182"
It is supported for uni-rotation (M1, M2 directions). As shown in the figure, the sabot 1-180 is separated into left and right halves, and the disk 6 is placed in the Y, Y2 directions (see FIG. 6(A)) so as to hold the group guard 33 of the disk 6. It is configured to be able to hold a larger range than the direct i\ of the group guard 33 of. In addition, the boat 180 can be placed below the turntable 130, and the disc holding mechanism 9 can be placed above the turntable 130.
The disk 6 is configured to be able to support the disk 6 held between the two.

Reference numeral 134 denotes a disk elevating mechanism, which is constructed as follows. The lift arm 142 is supported by a shaft 141 and a bearing 138 so as to be vertically movable. By rotating the lift arm 142, the lift ring 136 (see FIG. 24) supported by the lift arm 142 and located at the bottom of the elevating ring 135 is raised and lowered, and the mounting ring 133 fixed to the elevating ring 135 lifts and lowers the lift ring 136 (see FIG. 24). , the disc 6 is raised and lowered between a state in which it is supported above the turntable 130 and a state in which it is placed on the turntable 130.

1 [i 1) is a cam unit, which includes the above-mentioned Zabot 18 Fl, disk lifting mechanism 134. This is what drives the case expansion mechanism (0). The cam 161 is supported by the shaft +76 so as to be movable under water, and is connected to the worm 16 (U of the cam drive motor 165 via j).
Power 6. Z j, is configured to rotate. 162
Chopsticks/bar included, shaft 179. Bearing +63, ■
, water 1111111 is movably supported, and is biased by a spring 172 in the + direction. Lever 16
7.168 are respectively shafts 178. Bearing 170,1
1111iJ+ is freely supported by 71. Each lever 162.1ri7. ] fi8 and l are respectively linked to the force A161 so as to move ijL-C according to the cam diagram of the cam 161 (FIG. 15). 110 is a reversing lever for switching the operation of the disk holding mechanism 90. The reversing lever 190 is horizontally rotatably supported by a shaft 194, and is supported by a spring 192 in the Q direction. =j force and is positioned by block 191.

140 is a turntable driving motor. Figure 6 (
In A), 200 to 205 are microswitches, and 513.514 are photoswitches. The microswitch 200 is a switch for detecting the operation of the case expansion mechanism 60. The microswitch 201 is a switch for detecting the operation of the disk holding mechanism 90. The micro switches 202 to 205 and the F1 switches 513 and 514 are switches for detecting the position of the disk holding mechanism 90.

The disc holding mechanism 90 will be explained in detail.

7(A) to (C), FIGS. 8(A) and 8(B), FIG. 9, and FIG. 10 are explanatory diagrams of the structure and operation of the disk holding mechanism 90. The movable base 91 is provided with contact portions 91a on the left and right sides that contact the lid 3 or 502. Movable base 91 with cb rollers of 92 and 411M
It is rotatably supported by the rail 45 and engaged with the rail 45 as shown in FIG. 7(C). On the opposite side of the movable base 91, there is a ladder 1-
93 is rotatably supported. Reference numeral 94 denotes a leaf spring, which is set at a position where it comes into contact with the lid 3 or 502 and is shaped like fH. Reference numeral 95 denotes a lamp arm on the negative side, which is formed integrally with the movement base 91, and has a claw 95a as shown in FIG. 7(R).
is formed. The lower clamp arm 96 is rotatably supported by a bearing 97 and is supported by a spring 98 in the direction of arrow 98a.
is biased in the direction of Reference numerals 99 and 100 denote mold retaining members that engage with the glue notches 19 of the lid 3 to hang the lid 3 or 502.
j Stop. The mold placement members 99 and 100 are each supported by pins 105 and 106 so as to be horizontally rotatable relative to the movable base 91. In addition, the mold retaining member 99
, 100 includes a cam groove 11 provided in the sliding member 102.
A driven end 115,116 is provided, which is guided by 3.114 respectively. The sliding portion +4'+02 is substantially shaped, and the cam grooves 113 and 114 are guided by pins 105 and 109 and move substantially linearly in the direction of arrow Y1 or Y2. A roller 1 is placed on the left side of the center of the sliding member 102 in Figure 1.
03 is attached to the rotation mechanism, and is provided with a protrusion 102h, and has an abutting portion 102a and a spring catch 110a on the opposite side. The protrusion 102b passes through the square hole 91b drilled in the movable base 91 and connects to the abutting portion 10]b of the rotating member 101.
(See FIG. 7(C)). Further, the sliding member 102 is always biased in the direction of arrow Y2 by the spring 110 applied between the spring hook 111b and the spring hook portion 112 of the movable base 91. Further, the sliding member 102 is provided with a wedge-shaped portion 102c, as shown in FIG. 10(A).

As shown in (B), the wedge-shaped portion 102c and the lower clamp arm 9
It is configured so that it can abut with the abutting end 96a of No. 6. The rotating member 101 is horizontally rotatably supported by the movable base 91 by the fulcrum 101a, and is supported by the arrow 10 by the spring 104.
4a (FIG. 7(A)). Further, as described above, the rotating member 101 is formed with an abutting end 101c that can abut against the lid 3 or 502 in addition to the abutting portion 101b.

The contact portion 101h has a sloped shape as shown in the figure.

Reference numerals 107 and 108 indicate release parts provided at both ends of the movable base 91, which engage with the inclined part 26 of the protrusion 24 of the lid 3 or 502 to close the engagement between the lid 3 or 502 and the case 2! It is to be removed. Reference numeral 109 denotes a contact plate, which is provided LJ at a position where it can come into contact with the microswitches 202-205. A connecting piece 110' connects the heald 111 and the disk holding mechanism 90.

The operation of the disk holding mechanism 90 will be explained. The disk holding mechanism can take the following three states.

The first state is [lid/disc holding state-1].

This is done by hanging the lid 3 or 502 as shown in Figure 7 (A).
This is a state in which a disk 6 or 500 is sandwiched between two rice balls. In this state, the sliding member 102 is in the device closest to the right side in the figure (in the direction of arrow Y2) among the three states. The lid stopper 99, 100 is in a position where the lid 3 or 502 is restricted as shown in the figure by the driven bodies 115, 116 being guided by the cam grooves 113, 114, respectively.

The leaf spring 94 is in a state in which the lid 502 is biased forward (in the direction of arrow X). The rotating member 101 is in contact with the lid 3 at the contact end 101c. The lower clamp arm 96 is in a state of clamping the group guard 33 of the disk 6 or 500 as shown in FIG. 7(B). In this state, the claw 95a of the upper clamp arm 95 and the contact end 96 of the lower clamp arm 96
a is in a position where it contacts the group guard 33 or 505. Further, as shown in FIG. 10(B), the contact end 96a is in contact with the wedge-shaped portion 102c, and the sliding member 102 is urged to the right side (direction of arrow Y) in the figure by the urging force of the spring 110. Therefore, as a result, the lower clamp arm 96 is as shown in Fig. 7 (
B) is biased in the direction of arrow 98b and the group girl l5
33 or 500 is being held.

The second state is the "mold holding state." This is shown in Figure 8 (
As shown in A), the lid 3 or 502 is closed for one trigram, and the disc 6 is not clamped. In this state, the sliding member 10
2 is in the middle position among the three states. Mold retaining member 9
9, 100, the leaf spring 94, and the rotating member 101 are all in the same state as the [lid/disc holding state],
The lid 3 or 502 is secured as shown in FIG. However, in this state, since the sliding ffB shrine 102 has moved from the 1-lid/disc holding state 1 to the left +ull (Y direction) in the figure, it is no longer a wedge-shaped part as shown in FIG. 10 (13)] 02c and the contact portion 19fia are not in contact with each other.

Therefore, the lower clamp 1IilI! 96 is opened in the direction of arrow 98a as shown in FIG. 8 (13) due to the biasing force of the bones 98, and is in a state in which it does not clamp the disk [j.

The third state is a "non-retention state." This state is the 9th
As shown in the figure, the lid 3 is not hooked, and the disc 6 or 4
; l: 500 is also in a state where no clamping is performed. Sliding member 102
is at the position closest to the left side of the figure ('+'+ direction) among the three states. The driven ends 115 and 116 of the lid stop members 99 and 100 are inserted into the cam grooves 113 and 114, respectively, and are in an open state as shown in FIG. The lower clamp arm 96 is open and does not clamp the disk 6 or 500, as in FIG. Rotating member 1
01 is in the position as shown in the figure, the contact part 101b and the protrusion 102b of the sliding member 102 are in contact with each other, and the sliding part +J102 is pushed to the right side of the IUI (Y2 direction) by the biasing force of the spring 110.
It is regulated to prevent it from sliding.

In this way, the disc holding mechanism 90 can take three states: "lid/disk holding state", "lid holding state", and "non-holding state". In all these three states, the sliding member 1
It is regulated at the position in the sliding direction (Y, Y2 direction) of 02. In other words, by changing the position of the sliding member 102 in the Y, , Y2 directions, the "lid/disc holding state J, FM"
“Holding state”.

The disk holding mechanism 90 can be changed into three states including a "non-holding state". However, among the three states above, "
The "lid holding state" can be held when the sliding member 102 is regulated to the state shown in FIG. 8 by some means against the force of the spring 110.

The case expansion mechanism 60 will be explained in detail.

11(A)-(C), FIG. 12(A)-(C), and FIG. 13(A)-(C) are explanatory diagrams of the structure and operation of the case expansion mechanism 60. Reference numeral 80 denotes a fixed base of the case expansion mechanism, which is fixed to the chassis 40 of the playback device and is located near the insertion opening 51 as described above. The support member 61 is fixed to a fixed base 80. Reference numeral 62 denotes an engaging member, which is supported by a bearing 63 and a pin 74 fixed to a fixed base 80 so as to be vertically movable. Further, the engagement member 62 is biased by the spring 72 in the direction of the arrow W1 in FIG. 11(B). The expansion member 66 is attached to the support member 61 as shown in the figure.
It is supported by a bearing 67 fixed to a fixed base 80 so as to be vertically movable. The expanding member 66 is formed with an arm 64 and an abutment end 68 . A slider 65 is slidably attached to the fixed base 80, as shown in FIG. 11(C). The slider 65 is provided with elongated holes 65a and 65b, into which pins 71 and 70 are engaged, so that the arrow Y in the figure
, and is configured to slide linearly in the Y2 direction. In addition, the contact portion 63a of the bearing 63 causes the “11th [1(C)
), the slider 65 is restricted at the center and is configured to bend only slightly downward. Also,
The slider 65 is provided with two engaging portions 69, and with this configuration, the expanding member 66 has the slider 65 on the right side (in the figure).
By acting in the direction of arrow Y2), it rotates in the direction of arrow V2 in the figure, and by acting in the left side of the figure (in the direction of arrow Y), it rotates in the direction of arrow V.

Further, a spring 73 is applied between the slider 65 and the fixed base 80 as shown in the figure, and always urges the slider 65 to the right side (in the direction of arrow Y2) in the figure. Further, the slider 65 is provided with an abutting end 76 and a notch 65c. A case guide 75 serves to guide the case 2 or 501, and is fixed to the fixed base 80.

The above is the configuration of the case expanding mechanism 60. Next, it will be explained how the case expanding mechanism 60 expands the case 2 and engages the case 2 to substantially fix it to the playback device. When the case 2 or 501 is not inserted into the playback device, the case expansion mechanism 60 operates as shown in FIGS.
It is in the state shown in C). In other words, the notch 65 of the slider 65 and the engaging member 62 come into contact with each other, and the slider 65
It is regulated to the state shown in the figure against the urging force of. Therefore, the expanded portion +466 is restricted to the position shown in FIGS. 11(B) and 11(C).

Case 2 or 501 is attached to the case expansion mechanism 60 in this state.
is inserted into the case guide 75 through the insertion opening 51 of the main body 50 of the playback device.

FIGS. 13A to 13C show the process of inserting the case 2 into the case expansion mechanism 60.

FIG. 13(A) No. 81 ``0'' is shown for the case expansion mechanism in the same state as in FIGS. 1J(A) to (C).

When the case 2 or 501 is inserted into the case expansion mechanism 60 in this state as shown in the figure while being guided by the case guide 75 in the direction of arrow 4 is in contact, case 2 is shown in Fig. 13 (T3
). Then, when the case 2 is further inserted, the contact end 62a of the engagement member 62 comes into contact with the open end of the case 2, and the engagement member 62 rotates in the W2 direction in the figure, as shown in FIG. ) The engagement 162 of the engagement member 62
b engages with the engagement hole 13 of the second case 2. This happens when,
The notch 65c of the slider 65 and the engaging member 62 are no longer in contact with each other, and the slider 65 slides to the right (Y2 direction) by the urging force of the spring 73 as shown in FIG. 12(B). In the state shown in FIG. 12 CB), the expansion member 66 is
is rotated in the v2 direction so that it does not hinder the removal of the disk 6 or 500 from the case 2 or 501. In FIGS. 12(A) to 12(C), the state of the case 2 or 501 at this time, that is, the state of the case 2 or 501 that has been expanded, is shown by dashed lines. In this state, the engaging member 62 is moved by the slider 65 as shown in FIG.
), it is restricted from rotating in the W1 direction. Next, for example, if the abutting end 76 of the slider 65 is moved to the left side (Y direction) in the figure by some means, the slider 65 moves in the direction of arrow Y1, and the notch 65c is moved as shown in FIG. comes to the position of the engaging member 62, the spring 72
The urging force causes the engaging member 62 to rotate in the direction of arrow W1, and the engagement between the engaging hole 13 of the case 2 and the engaging member 62 is released.

In this way, the case expanding mechanism 60 of this proposed example has a means for expanding the case 2 as well as a stage for engaging the case 2, and moreover, by not moving the slider 65, the case 2 or 501 can be easily opened. It is possible to release the engagement with the

In addition, in this proposed example, as shown in FIGS. 11 and 12, a microswitch 200 is placed at a position where it can come into contact with the slider 65.
Since the case 2 is inserted into the expansion mechanism 60, the case 2 or 501 is engaged, and the slider 65 is operated, so that the case 2 or 501 is expanded and engaged by the microswitch 200. The structure is such that it can be detected. In addition, the case 2 is connected to the engaging member 62.
In the engaged state, since the movement of the engaging member 62 is regulated by the slider 65 as described above, the case 2 or 501 will not easily come off and will remain substantially fixed to the playback device 50. becomes.

Further, the micro-sinch 200 detects whether or not the case 2 is engaged with the engagement member 62, and a lamp 600 serves as a notification means to notify this detection state.
(FIG. 5) is provided on the front of the playback device main body 50.

Therefore, the user can easily check whether the case 2 or 501 is engaged. The lamp 600 is connected such that the engagement member 62 remains engaged. Note that a buzzer may be used as this notification means. Further, a disc diameter display lamp 601 connected to a photo switch 525 is provided on the front surface of the playback device main body 50, so that the user can easily know the diameter of the disc being played.

Regarding the cam unit 160, n'P L < 1ll-
J-ru.

14 and 16 are operation explanatory diagrams, and FIG. 15 is a timing chart diagram illustrating the movement of the lever. In FIG. 14, the cam 161 is horizontally rotatably supported by a shaft 176, and the cam 161 is horizontally rotatable. The power of the cam drive motor 165 is transmitted through the worm 166, and the cam drive motor 165 can rotate in both forward and reverse directions.

The lever 162 is connected to the shaft 179, and the levers 167 and 168
are rotatably supported on shafts 178, and cams 1
An interlocking member (not shown) that engages with the cam a400 of 61 is provided, and when the cam 161 rotates, the cam groove 400
They operate in conjunction with each other. The lever 167 is connected to the elevating mechanism 134 via a connecting member 173, and operates the elevating mechanism 134. The lever 168 is coupled to a coupling member 84 fixed to the shaft 181 via a coupling member 174 (not shown in FIG. 14, see FIG. 6(0)), and rotates the shaft 181. By moving the support 180, the support 180 can be raised and lowered.

The lever 162 is biased in one direction (=J) by the coil spring 163, so the interlocking member 404 installed in the reno ＼-l fi 2 is located in the cam groove. It is energized by H. The retaining pin 169 is provided on the lever 162 so as to come into contact with the contact portion +476 provided on the slider 65 described above. The lever 162 is rotated by the cam 161, and the slider 65 is moved in the Y1 direction against the spring 73, and the slider 65 is returned to the state shown in FIG. 14(A). It is something that

The cam groove 400 will be explained using FIG. 16-1 (Δ). The cam groove 400 is a cam path 405a.

It is composed of 405b, 405c, and 405d. The cam groove diameter 11 is larger than ρ2. Lever 1
The cam grooves 400 that drive the 67° 168
It is provided to operate according to the timing chart shown in FIG.

Next, the operation of the cam unit 160 will be explained with reference to FIGS. 8 and 16, focusing on the operations of the cam 161 and the lever 162. Figure 14 shows case 2 or 501
is not inserted into the playback device, and the corresponding cam 161 and interlocking member 404 are in the state shown in FIG. 16(A). When the case 2 or 501 is inserted, the slider 65 moves and the abutment member 76 moves the engagement pin 169 to the 1
By doing so, the state shown in FIG. 9 is obtained. slider 65
As shown in FIG. 14(B), it is stopped by the su buckle 410 and does not move beyond that point. This state is the state shown in FIG. 16(B). The engagement pin 169 is urged by the coil spring 163 to contact the contact member 76, and the interlocking member 404 is in a neutral state without contacting the inner wall surface of the cam groove 400. This state is the t1 state in FIG. 15 (hereinafter, the state will be indicated as tχ in the timing chart of FIG. 15). The microswitch 200 detects this state, and the disc clamping mechanism 90 clamps the disc 6 or 500 and starts operating without pulling it out from the case 2 or 501. The motor 165 is energized and the cam 161 is rotated as shown in FIG. ) is rotated in the A2 direction,
According to the timing chart in Fig. 15 mentioned above, lever 1
67 and 168 are pulled in the direction B2, not shown in FIG. ). This state is shown in Figure 16 (C
). At this time, since the cam groove diameter 12 is smaller than 11, the lever 162 moves in the B2 direction.

Since the slider 65 is locked by the collar 410, it cannot move (only the lever 162 moves without the slider 65). When the cam 6 further rotates, the state shown in FIG. 16(D) is reached. When the cam 161 rotates further than in FIG. The contact member 76 is urged to rotate in the B1 direction by the spring 163, and in this state, the contact member 76 is separated from the engagement pin 169, and the engagement pin 169 is further rotated in the B1 direction as shown in FIG. 16(D). It is in a state where it can be rotated. Therefore, the interlocking member 404 is connected to the cam path 405a.
When the cam 161 rotates in the A2 direction in this state, the interlocking member 40
4 enters the cam path 405a. When the cam 161 further rotates, the lever 162 moves in the B1 direction shown in FIG. 14, and the lever 168 moves in the B1 direction. The lever 162 is
By moving the slider 65 in the B1 direction, the slider 65 is brought into the state shown in FIG.
Alternatively, the state in which 501 is engaged is released (ta state).

At the same time, the lever 168 moves in the B1 direction shown in FIG. 14, and the support 180 descends (state t4). When the cam 161 further rotates, the lever 167 moves in the B1 direction in FIG. 14, lowers the elevating mechanism 134, and places the disk 6 or 500 on the turntable 130'' (t6 state). When the cam 161 further rotates, t6
When the rotary switch (not shown) detects the 1-reel device and de-energizes the motor 165, the cam 16+ stops (1- state). In this state G:1, if+, the cam 161 has rotated 360'' in the states shown in FIG. 8(A) and FIG. 16-1(A).

After this, when the playback switch is turned on, playback starts.

After the playback is finished, the turntable 130 is in a state where it stops and takes out 1M. Case 2 is the case expansion mechanism 60
When the case 2 or 500 is inserted into the expansion mechanism, the engaged state of the slider 65 is removed by 16'' as described above, and the case 2 or 500 is substantially fixed to the expansion mechanism (1? state).

This is the state shown in FIGS. 9 and 16(B).

The microswitch 200 detects this state, and the force A
The motor 165 is energized so that the motor 161 rotates in the A1 direction, which is the opposite direction to that described above. When the cam 161 rotates, the lever 167 is first pulled in the direction B2 in FIG. The lever 168 is pulled and the boat 180 rises to support the disk 6 or 500 (t9 situation)
. When the cam 161 further rotates, the l/bar 167 moves to B
Move in one direction and lower the lifting mechanism 134 (LID
situation). Thereafter, the disk 6 or 500 is recovered into the case 2 or 501 by the disk holding mechanism 90. During this operation, the cam 161 rotates, the lever 168 moves in the B1 direction, and the boat 180 descends (t11
situation). When the cam 161 further rotates, as described above,
After the interlocking portion 4'A 404 faces the branching member 403b, it enters the cam path 4051), resulting in the state shown in FIG. The state is released and the state shown in FIG. 8 and FIG. 16(A) is achieved.

To briefly summarize each state in Fig. 15, to is the standby state, tl is the case inserted state, L2 is the lift '1 raised position, t3 is the pressure point -1 to raised position, t3' is the start of slider movement, t4 is the slider Lock (case detached), t5 is lift lowered position, L6 is stand high state, L7 is case insertion muscle, L8 is lift raised position, L9 is lower 1/raised position, too is rift I/10 lowered position, Reference numeral 111 indicates the lowering position of the boat, and tl2 indicates the slider lock (separation from the base).

Next, the release mechanism will be explained in detail using FIGS. 27 to 29. 27(A) and 28 show the operation of the release mechanism 508 to release the state in which the holding mechanism 90 holds the disk 6 when the disk 6 is used. 27th
FIG. 29 shows the operation of the clamping mechanism 90 to release the clamping state of the disc 500 when the disc 500 is used. Figure 27 1'3 is shown in Figure 28 (
B) is the state. Reference numeral 103 denotes the sliding portion 4 whose holding mechanism was explained earlier. t l It is a roller that has been added 4J to O2. - Figure 28 (B) shows [Lid/disc holding state-1]
It is. Next, when the lever 511 is pulled, the release mechanism B1
It rotates in the direction shown in FIG. 28(C). If the clamping mechanism 90 moves in the X2 direction in this state, the roller 103 climbs the slope 510 and reaches the state shown in FIG. 28(D). This state is the above-mentioned "differential holding state." This state is shown in FIG. 27 1'3, and the state in which the disk 6 is held by the holding mechanism 90 is released. FIG. 27 (+-3) shows an operation in which the disk 500 is released from being held by the holding mechanism 90. Figure 27 1'3-] is the second
The state is shown in Figure 9 (B). Next, when the lever 511 is pulled, the release mechanism rotates in the El direction, and the roller 103
is moved in the Y1 direction. As a result, the state shown in section 29(C) is obtained, which is the aforementioned "differential holding state", and means that the state in which the disc 500 is held by the holding mechanism is released. After that, if the holding mechanism 90 moves in the X2 direction, the 29th
This state shown in FIG. 27 (D) is shown in FIG. 1'3.

Next, how the entire reproducing apparatus according to the proposed example operates with the above configuration will be explained step by step. 1st
Figure 7 to Figure 25 (A) to (C), Figure 26 (A) to
(C) and FIG. 30 are both schematic explanatory diagrams showing how the operations of each part of the reproduction device are performed in conjunction with each other.

First, the case 2 or 501 is attached to the main body 50 of the playback device.
FIG. 17 shows the situation +'+ii in which 11 people are defeated. At this time, the disc clamping mechanism 90 is located at the lower front of the center of the turntable 130 in the figure. The disc clamping mechanism 90 is in the non-holding state 1 described above. is in a downward position as shown in Figure 30(A).

Next, the case 2 or 501 is guided through the insertion port 51 to the case expansion mechanism fiO.
When inserted into the
Jj, it is expanded by the opening 4A66, and in this state, the engagement hole 13 is engaged by the retaining member 62, and it is approximately fixed to the playback device main body 50. In this state, the switch 525 is connected to the base of the protrusion provided on the case.
4-i'Qj is detected and the disk diameter is identified.

Next, this state is changed to [the microswitch 2 shown in Fig. 1].
00 is detected and the motor 114 is operated to drive the heald 111, thereby moving the disk holding mechanism 90 forward in the figure (in the X+ force direction).

Then, as shown in FIG. 18, the disk holding mechanism 90 enters the expanded case 2 or 501, the rotating member 101 comes into contact with the lid 3 or 502, and the sliding member 102
The restriction is released and the sliding member 102 slides to the right (in the direction of arrow Y2), and the disc holding mechanism 90 moves as described in O11.
is in the [lid/disk holding state]. At this time, the contact portion 102a of the sliding member 102 is connected to the microswitch 201.
, and it is detected that the disc holding mechanism 90 is in the "lid/disk holding state" at this position. Then, the motor 114 rotates in reverse, and the disk holding mechanism 90 begins to be moved backward in the figure (in the X2 direction). At this time, li! ? A roller 103 and a reversing lever 19 provided on the moving member 102
However, since the reversing lever 190 is rotatable in the direction of arrow R2 in FIG. 18, there is no problem in transferring the disk holding mechanism 90 just by rotating the reversing lever 190.

Next, the state during transfer is shown. 19 to 22 show the state in which the disk 6 is transferred, and FIGS. 23 and 24 show the state in which the disk 500 is transferred.

The operation of transferring the disk 6 will be explained. As shown in FIG. 19, the lid 3 and the disk 6 are connected to a disk holding mechanism 90
It is held in - pulled out from -2. Now, when the disk 6 is pulled out halfway as shown in this figure, the third
0(B) As shown in the figure, the support 180 goes to - and holds the grouper 133 of the disk 6. At this time, since the sabot 1-180 only touches the grouper 133, there is no need to tint the surface 11J of the disk [j.

Further, the disk holding mechanism 90 is moved rearward (in the X2 direction), and the disk holding mechanism 90 is transferred (Ii11) to a position where the plate 515 blocks the front islet 5+4 as shown in FIG. 27(A)-1. In the figure, a turntable 130
The center boss 131 located at the center of the disk 6 and the center hole 34 of the disk 6 come to approximately correspond to each other. Even in this state, the support 180 is configured as shown in the figure so as to hold the group guard 33 of the disk 6.

Next, Gt W in the center, ring 133 is Cam Uni.

By the operation of 1.160, the disk 6 is raised by 1 and the center portion of the disk 6 is held. FIG. 25(A) shows a concavity that illustrates this state from the side. Next, as shown in FIG. 25(B), the support 180 is lowered by the operation of the cam unit 160. Next, when the disk holding mechanism 90 is further moved rearward (X2 direction), the sliding portion of the disk holding mechanism 90 +
The roller 103 provided on the AlO2 and the slope 510 of the release mechanism 508 come into contact, and the sliding member 102 moves to the left (acting in the Y+ force direction and becomes the aforementioned one-lid holding state).In other words, the disc 6 is moved to the disc clamping mechanism. 90 is in a non-clamped state, which is the state shown in FIG.

In this state, the disk 6 is held by the mounting ring 133 in the center as shown in FIG. 25(C). After this, the mounting ring 133 is moved by the operation of Cam Unisol l-160.
When the disc 6 is lowered, the disc 6 is placed on the turntable 130. Next, CamUni 7) 160 operates,
The engagement between the engagement member 62 of the case expansion mechanism 60 and the case 2 is released, and the empty case 2 can be removed from the playback device.

Similarly, the small diameter disk 500 is transferred and the turntable +
The operation of placing it on 30-L will be explained.

The photo switch 525 identifies the disk as a small-diameter disk 500, and the control is automatically switched.

As shown in FIG. 23, the lid 502 and the disk 500 are held by the disk holding mechanism 90 and pulled out from the case 501. If it is pulled out halfway, the boat will drop as mentioned above]
80 has risen by 1 and supports Group Girth '505.

Further, the disk holding mechanism 90 is moved rearward ('X2 direction), and the transfer is stopped at a position where the plate 515 blocks the photoswitch 513, as shown in FIG. 27B-1. This placement is such that the center boss 131 of the turn tape monthly rate 30, which has a diameter of r'l-1, and the center hole 507 of the disk 500 almost correspond to each other. In this state A and A, the boat 180 is configured to hold the group guard 505 of the disk 500, as described above.

Next, the center mounting ring 133 is attached to the Cam Unino 1-160
When the disc 500 is lifted up and held at the center of the disk 500, the release mechanism 508 operates in conjunction with this operation, and by moving the roller 103 in the Y1 direction, the clamping mechanism 90 returns to the above-mentioned "lid holding state". "become. In other words, the disc 500 is not clamped by the clamping mechanism 90, and in this state, the disc 500 is not clamped by the central mounting ring 13.
It is held by 3. Thereafter, the holding mechanism 90 is moved rearward (in the X2 direction) again and stops at the position where the plate 515 has passed the photoswitch 514.

This state is shown in FIG. 24. Thereafter, the mounting ring 133 is lowered by the operation of the Cam Uniso I-160 as described above, and the disc 500 is mounted on the turntable 130.

Thereafter, the cam unisol l-160 operates to release the engagement between the engagement member 62 of the case expansion mechanism 60 and the case 501, allowing the empty case 501 to be removed from the rIf generator. FIG. 26 is a diagram explaining this operation from the side.

Above disk 6 and disk 500 are respectively case 2,
The operation of the saw from pulling it out of the case 501 to placing it on the turntable 130 will be explained.

Next, the regeneration state and recovery operation will be explained.

In this state, the turntable 130 rotates, the arm housing 120 scans over the disk 6 or 500, and reproduction is performed. At this time, the lid 3 or 502 is
As shown in the figure and Fig. 24, the lid holding part +4'41.4
2, the arm housing 120 will not hang down and come into contact with the arm housing 120 while driving.

When the playback is finished and the user inserts the empty case 2 or 501 into the playback device, the case expansion mechanism 60
The engaging portion +A62 engages with the case 2 or 501,
The case 2 or 501 is in a substantially fixed state with respect to the playback device main body 50. In this state, my cross switch 2
00 is detected in the same way as above. Furthermore, the case is identified and operated according to the flowchart shown in FIG. When it is determined that the correct case has been inserted, a recovery operation begins, the cam unit 160 operates, and the mounting ring 133 rises. In this state, microsinch 200
is detected in the same manner as described above, and this time the cam unit 160 operates and the mounting ring 133 rises.

Next, the retrieval operation will be explained, but it differs between the disk 2 and the disk 500 as in the case of insertion. First, the collection operation for the disk 6 will be explained.

When the mounting ring rises to support the disc 6 above the turntable, the motor 144 then moves the belt 1
11, the disk holding mechanism 90 moves forward (arrow
, direction) and stops at the position where the plate 515 passes the photoswitch 514. This state is shown in FIG. 25(B). This state is the aforementioned "lid/disc holding state". Next, the boat 180 is raised by the operation of the cam unit 160, and becomes the state shown in FIG. 25(A). Thereafter, the mounting ring 133 is lowered by the operation of the cam unit 160, and the disc holding mechanism 90 is moved forward (in the X+ direction) by the motor 114 and the belt 111 while holding the lid 3 and the disc 6. In other words, the state shown in Fig. 20 shifts to the state shown in Fig. 19.
The collection operation in the case of 00 will be explained. As described above, when the mounting ring is raised by -1 and the disc 500 is supported on one side by the turntable 130J, the clamping mechanism 90 is moved and stops at the position where the plate 515 has passed the photoswitch 513. Then, the report 180 is raised by the operation of the cam unit ]60. After this, place ring 1
33 begins to descend into force J Uniso 1160 action.

In conjunction with this, the )η removing mechanism operates, and the clamping mechanism enters the aforementioned "lid/disc holding state".

Thereafter, when the mounting ring 133 completes its descent, the clamping mechanism 90 is transferred forward (in the X1 direction) while holding the lid 502 and the disk 500 (FIG. 23). - The recovery operation for each disk has been explained below, but the final operation of recovery will now be described. This operation is common to both disks.

Further, when the disk support mechanism 90 is moved forward (in the X+ force direction, the opening 10 provided on the sliding member 102
3 and the slope 190a of the reversing lever 190 come into contact with each other. At this time, since the reversing lever 190 is restricted from rotating to R1, the roller 103 climbs the slope 190a and the sliding member 102 moves to the left (Y).

direction) and enters the above-mentioned non-holding state 1, in which the lid 3 is pushed into the case 2 by the biasing force of the leaf spring 94 as shown in FIG.

Then, the motor 114 rotates in reverse again, and the disk holding mechanism 90 is moved rearward (X2 direction) and returns to the position shown in FIG. 17. After this, the cam unit 160 operates again, and the engagement between the case 2 or 501 and the engagement part 62 of the case expansion mechanism 60 is released, and the disc 2 or 501 is disengaged from the case 2 or 501. is stored, and the case 2 or 501 can be taken out from the playback device main body 50 with the lid 3 or 501 engaged with the case 2.

Next, the operation when an incorrect case is inserted will be explained. If the micro-sinch detects that the case is inserted and it is determined that the case is incorrect, the motor 114 will not operate and only the power units 1 to 160 will follow the flowchart 1 shown in FIG. Operate. In other words, the engaging portion between the case 2 or the case 501 and the case expanding mechanism 60 is removed without the disk holding mechanism 90 moving.
Only engagement with A62 is released, case 2 or 501
can be started from the playback device main body 50 with an empty downhole.

In this way, when the user slightly inserts a space for storing a disc of a different diameter into the IIM into the playback device 50,
The disc i\ is identified, and the disc is automatically ejected, allowing playback. Another advantage is that disk collection 1) can be carried out automatically in response to disk i yen.

Although this proposed example of the production device operates, these operations can be controlled by, for example, a microcomputer. In other words, the motor 114 that drives the disk clamps 1 and +1 mechanism 90 and the -J'
- a motor 124 that drives the system housing 120 and a force J;
- By sequentially operating the upper drive motor 65, the above operations can be performed.

In addition, the disk holding mechanism 90 may be configured as shown in FIG.
In order to stop at each position shown in FIGS. 9, 20, 21, and 22, the microsinches 202 to 205 shown in FIG. It is detected that the contact plate 109 has abutted, and the motor 11
This is possible by programming to stop 4.

However, in the above proposed example, the case 2 of the large-diameter disk 6 and the case 501 of the small-diameter disk 500 have the same opening. In reality, it is sufficient for the entrance or opening of the case 501 that accommodates the small-diameter disk 500 to be slightly larger than the outer diameter L3 of the disk 500. In other words,
The case 501 of this proposed example is wasteful in size, especially in terms of the distance 1. This has been an obstacle to further reducing the cost of the disk case.

Purpose of the Invention The present invention provides a self-DIS system for discs from respective disc cases housing two or more types of discs with different diameters.
l'l! ] and put it on the turntable.
To provide a recording disk reproducing device which enables 1° recording and has no waste in the size of the case used.

Composition of the Invention The recording disk reproducing apparatus of the present invention includes a case main body which has a storage space inside which can accommodate disk-shaped recording media of different diameters, and has an opening at one end for taking out the recording medium; A recording disc playback device using a disc case comprising a lid removably engaged with an open part,
Insertion of a disk case into the playback device main body [-1] Transfer means for transporting the disk-shaped recording medium in the disk case inserted into the playback device main body; Small room l-1 that houses the medium
When using the disc case, the disc case is provided with a guide means for guiding the disc case approximately in the center of the disc case insertion opening.

With such a configuration, simply by placing the disc case on the playback device, discs with different diameters can be pulled out from the disc case and mounted on the turntable to perform playback. Moreover,
There is no need to use a case with an unnecessarily large frontage as in the proposed example.

Description of examples Next, one embodiment of the present invention will be described.

The reproducing apparatus of this embodiment shown below is obtained by adding a case guide means to be described later to the reproducing apparatus of the above-mentioned proposed example. This embodiment is shown in FIGS. 31 to 33.

FIG. 31 is a schematic explanatory diagram of a narrow disk case that can be used in an embodiment of the present invention. This disc case 70
0 has a disk entrance/exit compared to the small-diameter disk case 501 of the above-mentioned proposed example.

The width of the disk is small, and it is just large enough to insert and remove the small-diameter disk 500. In other words, unlike the disk case 501, there are no wasted parts on the left and right sides. Also,
The lid 702 does not have left and right engaging parts, such as the leaf springs 25 in the lid 3, for example. However, for compatibility, the shape of the central part, for example, the engagement hole 13, the engagement hole 706, the notch 19 and the notch 703, and the convex part 21 of the lid 3 and the convex part 704 of the lid 702 are approximately the same. The shape is as follows.

FIGS. 32 and 33 are schematic illustrations of the guide means of this embodiment. The case guide member 752 has left and right case guide parts 753 as shown in the figure, and is attached to a support member 750 fixed to the playback device main body 50 by a fulcrum 751 in the direction of the arrow α in the figure.
, and is supported so as to be rotatable in the directions of β. Also,
A shielding plate 75 is provided on the outer surface of one case guide portion 753.
5 is formed, and by operating the photoswitch 525 of the playback device of the proposed example, it is possible to detect differences in cases.

Here, the state shown in FIG. 32 shows a state in which the case 2 of the large-diameter disc can be inserted into the main body 50 of the playback device. FIG. 33 shows the case guide member 752 in a state where the narrow disc case 700 shown in FIG. 31 can be inserted into the playback device main body 50.
indicates a certain state.

Next, the operation will be explained.

First, when inserting the case 2 containing the large-diameter disk 6, it is inserted into the playback device main body 50 in the state shown in FIG. 32, and the operation is exactly the same as in the proposed example described above.

Next, when inserting the narrow small-diameter disc case 700 into the playback device main body 50, first from the state shown in FIG. 32 to the state shown in FIG.
When the state shown in the figure is reached, the case guide member 752 is rotated in the direction of the arrow α. At this time, the rotating means may be manual or may be powered by a motor, for example. 33rd
In the state shown in the figure, since the shielding plate 755 shields the photoswitch 525 as shown in the figure, it operates to draw the small-diameter disc 500 into the main body 50 of the playback device, similar to the playback device of the proposed example described above.

At this time, since the lid 702 of the small-diameter case 700 does not have the left and right engaging parts such as the leaf springs 25 as in the case of the above-mentioned proposed example, the release member 107.1 of the disk holding mechanism 90
Heart disengaged by 08, BHc,r not. Moreover, the width rs of the small-diameter disc case 700 is the width 1-s of the 1Jl example of the gauge 2.501. The second person smaller than E, Agebe! 1107 and 108 will not come into contact with the case 700.

Therefore, when the case 700 is inserted into the playback device of this embodiment, which can be guided to the approximate center of the disk case insertion [151] in the state shown in FIG. It is expanded by the mechanism 60, and the disk 500 is loaded into the device in the same manner as in the proposed example.

The following operation is exactly the same as the above-mentioned proposed example.

In the manner described above, the small-diameter disk 500 housed in the case 700, which has a smaller size than the proposed example, can be automatically loaded into the apparatus.

Effects of the Invention In the recording disc playback device of this invention, the user slightly inserts each case containing various discs into the playback device, and the discs are automatically removed from the case. This has the advantage that the size of the case can be kept to the minimum required size.

[Brief explanation of the drawing]

Figures 1 (A), (B) and (C), (r)) are a plan view and a sectional view of a disk that can be used in the proposed example recording disk reproducing device, respectively, and Figures 2 (A) and (B) are FIGS. 3(A) to 3(C) are a cutaway exploded perspective view and an assembled perspective view of the disk case housing the disk, respectively.
) are respectively a front view, a top view, and a side view of the lid of the disk case, and FIGS. 4(A) and 4(B) are partially cutaway plan views of the case that accommodates disks of different diameters, respectively.
FIG. 5 is an external perspective view of a proposed example of a recording disc playback device that is the basis of this invention, FIG. 6(A) is a perspective view of its schematic configuration, and FIG. 6(B) is a rail of the movable base. FIG. 6(C) is a perspective view of the cam unit and elevating mechanism, and FIGS. 7(A) to (C) are plan views of the disk holding mechanism in the lid/disk holding state. 2 sectional view and front view, FIGS. 8(A) and (B) are respectively a plan view and sectional view of the disk holding mechanism in the lid holding state, and FIGS. 9(A) and (B) are respectively the same disk holding mechanism. A plan view and a sectional view of the clamping mechanism in the non-holding state, FIGS. ) to (C) are a plan view, a cross-sectional view, and a front view of the case-less case of the case expansion mechanism, and Figures 12 (A) to (C) are the case of the same case expansion mechanism. 13A to 13C are a plan view, a sectional view, and a front view of the inserted state, and FIG. 14A is an explanatory diagram of the operation of the case expansion mechanism. (13) is also an explanatory diagram of the operation of the cam unit, the first
Figure 5 is a time chart of the same cam unit, 161m (
A) to (D) are explanatory diagrams of the operation of the same cam unit, FIGS. 17 to 24 are explanatory diagrams of the operation of the entire playback device seen from above, and FIGS. 25 (A), (B), (C
) and FIG. 26(A). (B) and (C) are side views of the same side, FIGS. 27 to 29 are explanatory diagrams of the operation of the release mechanism, and FIGS. FIG. 31 is an explanatory diagram of a narrow disc case that can be used in an embodiment of the present invention, and FIGS. 32 and 33 are perspective views of the outer appearance of the case guide member in different operating states in an embodiment of the present invention. It is. 1... Disc case, 2... Case body, 3...
- Lid, 6... Disc (recording medium), 13... Engagement hole (engaging portion), 40... Chassis, 50... Playback device main body, 52... Case insertion slot, 60... ...Case expansion mechanism, 62...Engagement member (case engagement means), 62
a... Contact end, 62b... Engagement end, 65... Slider, 80... Fixed base, 90... Disk clamping mechanism (retracting means), 91... Movable base, 95...・・・
Upper clamp arm, 96...lower clamp arm, 99,1
00...Device holding member (mold holding means), 10.7,10
8...Release member, 120...Arm housing, 1
34...Disk lifting mechanism, 160...Cam unit, 180...Support, 200-205...Micro switch, 500...Small diameter disc, 501...
・Case for small diameter disc, 502... Lid for small diameter disc, 508... Release mechanism, 513° 514... Photo switch, 700... Small disc case, 702
...Lid for small disk case, 752...Case guide mechanism Fig. 4 (B) Fig. 5 6'0 IX B et al. Fig. 30 n Fig. 31

Claims (1)

[Scope of Claims] A disc case is used that includes a disc case main body that has an opening at one end and has a storage space inside that can store a disc-shaped recording medium, and a lid that removably engages with the opening. A recording disc reproducing device comprising: a wide disc case for storing a first recording disc having a first diameter; and a second recording disc having a smaller diameter than the first recording disc.
A playback device main body has a disc case insertion slot that can be inserted into either a narrow disc case that stores a recording disc and has a smaller opening than the wide disc case, and a playback device that can be inserted into the disc case insertion slot. a transport means for transporting the disc-shaped recording medium in the disc case within the playback device main body; A recording disc playback device comprising: guiding means for guiding the narrow disc case inserted into the disc case insertion slot to approximately the center of the disc case insertion slot.