JPS6182369A - 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).
Remove the disc from the disc case containing the
The present invention relates to a recording disk reproducing device that automatically reproduces data.

Conventional configurations and their problems Traditionally, in playback devices for high-density recording discs, such as video discs, as in Japanese Patent Application Laid-open No. 111158/1983, a player manually plays a disc in a cylindrical disk case. There are many playback devices that use a so-called semi-automatic loading method, in which the player inserts the player deep into the case and manually removes the empty case. However, with this type of semi-automatic loading method, when inserting and removing the case manually, the case must be moved back and forth significantly, and the loading mechanism does not function perfectly to withstand harsh use by the user. There were various problems such as difficulty in configuring the system.

Therefore, we have devised a recording disc playback device that automatically takes out the disc from the disc case by simply inserting the disc case slightly into the playback device, places it on a turntable, and allows playback.

However, if the user operates the expansion mechanism inside the playback device with his or her fingers without inserting the case when inserting the disc, the gripping means is automatically moved and the disc in the disc case is gripped. Make it work like this. However, since there is no disk, it cannot be held, and the transfer means is unable to move.
The accident resulted in him continuing to walk. Also, when collecting the disc, as in the case described above, if the expansion mechanism is operated with a finger or the like without inserting the case, the holding means is automatically transferred and the disc is collected into the case. . However, because there was no case, the disc was accidentally ejected from the playback device. In the market, there is a high possibility that such an erroneous operation will occur, and this has hindered the widespread use of autoloading players in the market.

Purpose of the Invention The present invention provides a system that allows normal disc ejecting and disc recovery operations to be performed even if the user accidentally touches the starting means of the disc transport means with a finger or the like without inserting the disc case into the main body of the playback device. It is an object of the present invention to provide a playback device that can prevent accidents caused by user's erroneous operations by maintaining the disk transport means and the case 1F means in a standby state for inserting the disk case.

Composition of the Invention The recording disk reproducing apparatus of the present invention includes a disk case body having an opening at one end and a storage space inside which can accommodate a disk-shaped recording medium, and a lid that is removably engaged with the opening. A recording disk playback device using a disk case consisting of a detection means for detecting the disk case inserted into a disk case insertion slot of the playback device main body, and a detection means for detecting the disk case inserted into the disk case insertion slot of the playback device main body, and a detection means for detecting the disk case inserted into the disk case insertion slot of the playback device main body, A transfer means for transferring the disk case in the direction of taking it in and out of the case, a locking means for substantially fixing the disk case near the insertion opening, and a locking means for transferring the disk case only when the detection means detects that the disk case is inserted. controlling the transport means to operate the means to take in and take out the disc-shaped recording medium, and release the locking means from substantially fixing the disc case when the detection means does not detect the disc case; and control means for controlling the first stage of locking so as to cause the locking to occur.

With this configuration, even if the user does not insert the case into the main body of the playback device and operates the playback device with his or her fingers, he or she does not have to carry out normal disk ejecting and disk recovery operations, thereby preventing accidents.

The control means not only prevents normal disk ejection and disk recovery operations, but also controls the transfer means and the locking means to return to the case insertion standby state in the event of a malfunction. This is desirable.

Description of examples Embodiments of this invention are shown in FIGS. 1 to 27.

First, the outline will be explained. As shown in FIG. 6, the playback device main body 50 includes a chassis 40, an exterior case 50a, a turntable 130, and an arm housing 120. The arm housing 120 mounts a reproducing head.

A fixed base 80 is fixed to the chassis 40, and a case locking/expanding mechanism 60 serving as a case locking means is provided on the fixed base 80. This mechanism 60 is provided with a locking member 62 that is vertically movable and a member that opens the opening of the case 2. The chassis 40 is further provided with a movable base 91 that is movable in the front and rear directions (X, X2 directions). A disk holding mechanism 90 and a neck hanging member 9 are mounted on a movable base 91.
9.degree. 100 are provided, and these constitute a transfer means for drawing the disc 6 together with the lid 3 from the case 2 onto the turntable 130 and returning it to the case 2. 5
Reference numeral 25 denotes a case detection switch serving as a disk case detection means provided near the insertion opening, and a photo switch is used. 508 is a release mechanism that releases the disk holding mechanism 90 from holding the disk.

Next, the whole will be explained in detail.

FIGS. 1 to 4 respectively show the configurations of a disc and a disc case that can be used in the recording disc reproducing apparatus according to this embodiment. In Figure 1, disk 6
has a center hole 34 and a bank-like outer group guard 33
An inner group guard 32 is provided. L,
If the inner diameter of the disk 6 is [7° (the diameter of the J disk 6, T
1 is the thickness of the group girl L, and T2 is the thickness of the recording surface. In Fig. 2, a rectangular disc case 1 includes a disc case main body 2 (hereinafter referred to as the case) and a case 2.
An opening 7 provided on the front side in the insertion direction X1 into the device.
The lid 3 is detachably connected to the lid 3.

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 X1 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 a protrusion 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.
A retaining 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.

A flange portion 18 is provided at the end of the lid 3 to cool the opening 7 of the case 2 when the lid 3 is fixed to the case 2.
In addition, a notch 19 is provided symmetrically to the center line (n) into which an expanding member, which will be described later, can enter.

A leaf spring 25 is further 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 . The tip of the protrusion 24 is provided with an inclined portion 26 that engages 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 side facing the disk 6 is formed, for example, into a circular arc with a gap at both ends larger than a 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 a playback operation to be described later.

FIGS. 5 and 6 show the recording disk reproducing apparatus of this embodiment. FIG. 5 is an external view of the recording disk reproducing apparatus, and as shown in the figure, a case insertion opening 51 is provided in the outer case 50a of the reproducing apparatus main body 50. A case detection switch 525 is provided in the insertion port 51 and detects the state in which the case 2 is inserted into the insertion port 51.

Figures 6(A) to 6(C) show the basic configuration of a recording disk reproducing apparatus. In FIG. 6(A), 130 is a turntable on which the disc 6 is placed and brought into playback mode. Reference numeral 131 denotes a center boss, which brings the disc 6 placed on the turntable 130 into pressure contact with the turntable 130. 40 is a chassis, and a guide 52 guides the case 2 into the main body 50 of the playback device.
°53 is fixed. The guides 52a and 53a are the guide grooves. 60 is a case locking and expanding mechanism;
It is fixed on the chassis 40 near the case insertion port 51. Reference numeral 66 denotes an expansion member that is supported by the fixed base 80 so as to be movable below -F, and the case 2 is expanded by the support member 61 fixed to the fixed base 80. fixed base 80
is fixed to the 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 case 2 engagement hole 13. 90 is a disk holding mechanism. 95 is an upper clamp arm, which is formed integrally with the movable base 91. 9
A lower clamp arm 6 is rotatably supported by a bearing 97, and the disk 6 is clamped between these arms. 99.100 is lIll stopper member, pin 105
．． 106, it is horizontally rotatably supported with respect to the movable base 91, and engages with the notch 19 of the lid 3 to lock the lid 3. Reference numeral 94 denotes a temporary spring, which is attached to the movable base 91 at a position where it contacts the lid 3.

Reference numerals 107 and 108 are claw-like release members formed integrally with the movable base 91, which function to release the engagement between the lid 3 and the case 2 by engaging with the slope 26 of the protrusion 24 of M3.

The movable base 91 of the disk holding mechanism 90 is connected to the rail 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 attached to the rail 45.4.
It never deviates from 6.47. The movable base 91 is fixed to the belt 111 by a connecting piece. Held 111
is hung between gears 112 and 113, and a motor 114 with a disengagement mechanism drives the disk holding mechanism 90. Ru. Reference numeral 120 denotes an arm housing, and a rail 126 and a shaft 122 allow the turntable 130 to be moved in the left and right directions (Y, Y2
It is movably supported in both directions. Similarly to the disk holding mechanism 90, the arm housing 120 also has a motor 124.
and Held (not shown), the turntable 1301
- The disk 6'' placed on the disk 6'' is transported in parallel, and the signal from the disk 6 is picked up.

In FIG. 6(C), 180 is a sabot I. supporting the disk 6, and a shaft 181. It is supported by a bearing 182 so that it can freely move upward (in the M, M2 directions).

The support 180 is provided in two parts, left and right, as shown in the figure, and supports the group guard 33 of the disk 6 in the y, y2 direction (see FIG. 6(A)) so as to hold the group guard 33 of the disk 6. It is constructed so that it can hold a larger area than the diameter of the gar 133. Also, support 180
is configured to be in a state where it is below the turntable river 30, and a state in which it can protrude from the turntable 130-1 and support the disc 6 held by the disc holding mechanism 90.

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 lower part 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 disk 6 is raised and lowered between a state where it is supported above the turntable 130 and a state where it is placed on the turntable 130.

160 is a cam uni-so 1~, a nii ids sabot [180, a disk elevating mechanism 134. It drives the case locking and expanding mechanism 60. The cam 161 is horizontally rotatably supported by the shaft +76, and the worm 16
6 and is configured to be rotated by the power of a cam drive motor 165. 162 is a lever, and shaft 179. It is supported horizontally rotatably by a bearing 163,
It is urged in the P1 direction by a spring 172. Lever 1
67 and 168 are respectively shafts 178. Bearing 170.
It is rotatably supported by 171. Each lever 1
62, 167, and 168 are respectively linked to the cam 161 so as to operate according to the cam diagram of the cam 161 (FIG. 15). 190 is a reversing lever for switching the operation of the disk holding mechanism 90. The reversing lever 190 is the shaft 1
94 for horizontal rotation, and a spring 192
is urged in the Q direction by the block 191 and positioned by the block 191.

140 is a turntable driving motor. Figure 6 (
In A), 200 to 205 are microsinches. Microsinch 200 has a case locking and expanding mechanism 60
This is an operation detection switch.

The micro switch 201 is a switch for detecting the operation of the disk holding mechanism 90. Microsinch 202-20
5. Photoswitches 513 and 514 are switches for detecting the position of the disk holding mechanism 90.

In FIG. 6(C), reference numeral 508 is a release mechanism that releases the state in which the holding mechanism 90 is holding the disk. The release mechanism 508 has a slope 510. It is composed of a block 509 and a rotating lever 511, and is connected to a pin 520.
It is rotatably supported in the E2 direction. Rotating lever 51
1 is connected to a lever 515 provided on the lifting mechanism 134 via a wire 512, and is configured to rotate in conjunction with the operation of the lifting mechanism. Note that the block 509 ensures that the release mechanism 5 is released even if the position of the roller 103 is slightly shifted.
This is a guide that will lead you to 08.

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. 92ba4
The rollers are rotatably supported by the movable base 91 and engaged with the rails 45 as shown in FIG. 7(C).

On the opposite side of the movable base 91, an Ll-ra 93 is rotatably supported. Reference numeral 94 denotes a leaf spring, which is attached at a position where it comes into contact with the lid 3. Reference numeral 95 designates an l-side clamp arm, which is formed integrally with the movable base 91 and is shown in FIG.
) A claw 95a is formed as shown in FIG. The lower clamp arm 96 is rotatably supported by a bearing 97 and is supported by a spring 98.
is biased in the direction of arrow 98a. 99.1
00 is a lid Jttll two member which engages with the notch 19 of the cover 3 to set the lid 3 111.

The mold setting members 99 and 100 have pins 105° and 106, respectively.
It is supported so as to be horizontally rotatable relative to the movable base 91. In addition, the force J, /#113°1 provided on the sliding portion 4A' +02 is applied to the cover IL member 99°100.
A driven end 115, 116 guided by 14 is provided, respectively. The sliding member 102 is approximately plate-shaped, and the cam groove 1
13 and 114 are guided by pins 105 and 109 and move approximately linearly in the direction of arrow Y1 or Y2. Sliding member 1
02 has a roller 103 rotatably attached to the left side of the center in the figure, a protrusion 102b, and an abutment part 102a and a spring catch 110a on the opposite side. Protrusion 1
02b is configured so that it can come into contact with the contact portion 101b (see FIG. 7(C)) of the rotating member 101 through a square hole 91b drilled in the movable base 91. 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. In addition, the sliding member 102
is provided with a wedge-shaped portion 102c, as shown in Fig. 10 (
As shown in A) and (B), the wedge-shaped portion 102C is configured to come into contact with the abutting end 96a of the lower clamp arm 96. The rotating member 101 is horizontally rotatably supported by the movable base 91 by a fulcrum 101a, and is urged by a spring 104 to rotate in the direction of an arrow 104a (FIG. 7(A)). Further, as described above, the rotating member 101 is formed with an abutting end 101C that can abut the lid 3 in addition to the abutting portion 101b. The contact portion 10111 has a sloped shape as shown in between.

Reference numerals 107 and 108 denote release parts +1 provided at both ends of the movable base 91, which engage with the inclined part 26 of the protrusion 24 of the lid 3 to release the engagement between the lid 3 and the case 2. Reference numeral 109 denotes a contact plate, which is installed at a position where it can come into contact with the microswitches 202-205. A blocking plate 515 is provided to block the photoswitches 513 and 514.

The photoswitch 514 is used to detect the transfer speed switching position, and the photoswitch 513 is used to detect the position where the center of the disk 6 and the center of the turntable 130 substantially coincide. 11O' is a connecting piece that connects the health l-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 the "lid/disc holding state".

This is a state in which the lid 3 is closed and the disc 6 is clamped as shown in FIG. 7(A). In this state, the sliding member 10
2 is the most right side of the figure (direction of arrow Y2) among the three states.
It is located close to. The neck hanging members 99 and 100 are in a position where the lid 3 is restricted as shown in the figure by having driven ends 115 and 116 guided by cam grooves 113 and 114, respectively.

The leaf spring 94 is in contact with the lid 3 as shown in the figure, biasing the lid 3 forward (arrow X, force direction).The rotating member 101 is in contact with the contact end 101C.

The lower clamp arm 96 is attached to the disc 6 as shown in FIG. 7(B).
The group guard 33 is held in between. In this state, the claw 95a of the second clamp arm 95 and the contact end 96a of the lower clamp arm 96 are in a position to contact the group guard 33. In addition, 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 in the figure (in the direction of arrow Y1) by the urging force of the spring 110. As a result, the lower clamp arm 96
It is biased in the direction of arrow 98b in Figure (B) and holds the group guard 33.

The second state is the "lid holding state". This is shown in Figure 8 (
As shown in A), the lid 3 is closed and the disc 6 is not clamped. In this state, the sliding member 102 is at a position halfway between the three states.

The neck hanging members 99, 100, the leaf spring 94, and the rotating member 101 are all in the same state as the "lid/disk holding state", and the lid 3 is fixed at 11 as shown in FIG. . However, in this state, since the sliding member 102 has moved from the "lid/disc holding state" to the left side (Y direction) in the figure, the wedge-shaped portion 102 is no longer attached as shown in FIG. 10(B).
2c and the contact end 96a are not in contact with each other. Therefore, the lower clamp arm 96 is moved by the biasing force of the spring 98 as shown in FIG.
As shown in B), it opens in the direction of arrow 98a and is in a state in which the disc 6 is not clamped.

The third state is [non-holding state j]. This state is the 9th
As shown in the figure, the lid 3 is not latched and the disc 6 is not clamped. The sliding member 102 is located at the position closest to the left side (Y direction) of the three states. The driven ends 115 and 116 of the neck hanging members 99 and 100 are guided by the cam grooves 113 and 114, respectively, and are in an open state as shown in FIG. The lower clamp arm 96 is in the same state as in FIG. 8, and is open and does not clamp the disk 6. The rotating member 101 is in the position shown in the figure, and the contact portion 101b and the protrusion 102b of the sliding member 102 are in contact with each other, and the sliding member 102 is moved to the right side (in the figure) by the biasing force of the spring 110.
It is regulated so that it does not slide in the Y2 direction).

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. That is, by changing the position of the sliding member 102 in the Y and Y2 directions, the "lid/disc holding state" and the "lid holding state" can be achieved.

The disk holding mechanism 90 can be changed into three states including a "non-holding state". However, among the three states below,
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.

Next, the release mechanism will be explained in detail using FIGS. 26 and 27. 26 and 27 show the release mechanism 508
2 shows the operation of the clamping mechanism 90 to release the state in which the disc 6 is clamped. Figure 26 (A) is shown in Figure 27 (B).
). Reference numeral 103 denotes a roller provided on the sliding member 102 mentioned earlier in the description of the clamping mechanism. Figure 27 (
B) is the "lid/disc holding state". Next, when the lever 511 is pulled, the release mechanism rotates in the E1 direction and the 27th
The state shown in Figure (C) is reached. In this state, the clamping mechanism 90
If the roller 103 moves in the direction shown in FIG. This state is the aforementioned "lid holding state". This state is shown in FIG. 26 (r3), and the state in which the disk 6 is held by the holding mechanism 90 is released.

The case locking/expanding mechanism 60 will be explained in detail. 1st
Figure 1 (A) to (C), Figure 12 (A) to (C), Figure 13
Figures (A) to (C) are explanatory diagrams of the structure and operation of the case locking and expanding mechanism 60.

Reference numeral 80 denotes a fixed base of the case locking and expanding mechanism, which is fixed to the chassis 40 of the playback device and is connected to the insertion slot 51 as described above.
It is in the vicinity of The support member 61 is fixedly fixed to the base 80. A retaining member 62 is supported by a bearing 63 and a pin 74 fixed to a fixed base 80 so as to be vertically movable. Further, the retaining member 62 is moved by the spring 72 to the first
It is biased in the direction of arrow W1 in FIG. 1(B). The expansion member 66 is provided at a position corresponding to the support member 61 as shown in the figure, and 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 .

65 is a slider, as shown in FIG. 11(C),
It is slidably attached to the fixed base 80. The slider 65 is provided with elongated holes 65a and 65b, and a bottle 71.70 is fitted into each of the slots 65a and 65b, respectively, so that the arrow Y1 in the figure.
It is configured to slide linearly in the Y2 direction. Furthermore, the slider 65 is restricted at its center by the abutting portion 63a of the bearing 63, as shown in FIG. 11(C), and is configured to flex only slightly downward. Further, the slider 65 is provided with two retaining portions 69, and with this configuration, the expansion member 66 is arranged so that the slider 65 is on the right side of the figure (arrow Y).
By working in two directions), it rotates in the direction of arrow 2 in the figure, and by working in the left side of the figure (in the direction of arrow Y1), it rotates in the direction of arrow 1. Further, a spring 73 is provided 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, and is fixed to the fixed base 80.

The above is the configuration of the case locking and expanding mechanism 60.Next, how does this case locking and expanding mechanism 60 expand the case 2 and engage the case 2 to substantially fix it to the playback device? Explain. When the case 2 is not inserted into the playback device, the case locking wave opening 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 expanding member 66 is restricted to the position shown in FIG. 11(B), CC).

The case 2 is inserted into the case locking/expanding mechanism 60 in this state through the insertion opening 51 of the playback device main body 50 and guided by the case guide 75.

FIGS. 13A to 13C show the process of inserting the case 2 into the case locking and expanding mechanism 60. FIG. 13(A) shows the case locking/expanding mechanism 60 in the same state as FIGS. 11(A) to (C). When the case 2 is guided by the case guide 75 in the direction of the arrow X2 and inserted into the case holder 1 expansion mechanism 60 in this state as shown in the figure,
First, the vicinity of the opening of the case 2 comes into contact with the expanding member 66, and the case 2 is expanded as shown in FIG. 13(B). Then,
When the case 2 is further inserted, the contact end 62a of the engagement member 62 contacts the open end of the case 2, and the engagement member 62 rotates in the W2 direction in the figure, as shown in FIG. 13(C). The engagement end 62b of the engagement member 62 engages with the engagement hole 13 of the case 2 as shown in FIG. When this happens, the notch 65c of the slider 65 and the engaging member 62 are no longer in contact with each other, and the slider 65 is moved by the spring 7.
As shown in Fig. 12 (B), the biasing force of 3 causes the right side (Y2
direction). In the state shown in FIG. 12(B), the expanding member 66 rotates in the V2 direction as shown in the figure, so that it does not interfere with the removal of the disk 6 from the case 2. In FIGS. 12(A) to 12(C), the state of the case 2 at this time, that is, the state of the expanded case 2, is shown by dashed lines. In this state, the retaining member 62 is restricted by the slider 65 so as not to rotate in the W1 direction as shown in FIG. 12(B). Next, for example, the abutment end 76 of the slider 65 is moved to the left side (Y) of the figure by some means.

direction), the slider 65 moves in the direction of arrow Y, and the notch 65c moves into the engagement member 6 as shown in FIG.
When the engagement member 62 reaches the position 2, the engagement member 62 rotates in the direction of the arrow W1 due to the biasing force of the spring 72, and engages the engagement hole 13 of the case 2.
The engagement between the engagement member 62 and the engagement member 62 is released. in this way,
The case locking and expanding mechanism 60 of this embodiment has a means for expanding the case 2 as well as a means for engaging the case 2, and moreover, by moving the slider 65, the engagement with the case 2 can be easily released. It is possible.

In addition, in this embodiment, as shown in FIGS. 11 and 12, a microsinch 200 is placed at a position where it can come into contact with the slider 65.
Therefore, when the case 2 is inserted into the expansion mechanism 60, the case 2 is engaged, and the slider 65 is operated, the microswitch 200 can detect that the case 2 is expanded and engaged. The structure is as follows. Further, when the case 2 is engaged with the engagement member 62, the movement of the retaining member 62 is regulated by the slider 65 as described above, so the case 2 will not easily come off.
It is in a state where it is substantially fixed to the playback device 50.

Further, the microswitch 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 is engaged or not. The lamp 600 is connected such that the engagement member 62 remains engaged. Note that a buzzer may be used as this notification means. In the case of a buzzer, it should sound when the state changes from a bonded state to a non-bounded state.

The cam unit 160 will be explained in detail.

Figure 14, 16-1. FIG. II is an explanatory diagram of the operation, and FIG. 15 is a timing chart diagram explaining the movement of the lever. In FIG. 14, a cam 161 is horizontally rotatably supported by a shaft 176, and the power of a cam drive motor 165 is transmitted through a belt 175° worm 166, so that the cam 161 can rotate in both forward and reverse directions.

The lever 162 is connected to the shaft 179, and the levers 167 and 168
are each rotatably supported on the shaft 17B, and the cam 1
An interlocking member (not shown) that engages with the cam groove 400 of 61 is provided, and when the force l, 161 rotates, the cam groove 40
Each operates in conjunction with 0. 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
It is coupled to a coupling member 184 fixed to the shaft 181 via a coupling member 174 (not shown in FIG. 14,
The support 180 is raised and lowered by rotating the shirt 181 (see FIG. 6(C)). The lever 162 is biased in the P1 direction by a coil spring 163, so the interlocking member 404 provided on the lever 162 is always in the cam groove and biased in the P1 direction. The engagement pin 169 is provided on the lever 162 so as to come into contact with the contact member 76 provided on the slider 65 described above. The lever 162 is rotated by the cam 161, moves the slider 65 in the Y1 direction against the spring 73, and returns the slider 65 to the state shown in FIG. 14(A).

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

It is composed of 405b, 405c, and 405d. The cam groove diameters 11 and 12 are larger. 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, focusing on the operation of the cam 161 and lever 162,
8 and 16 regarding the operation of the cam unit 160
This will be explained using Figures 1 and II. Figure 14 shows case 2.
is not inserted into the playback device, and the corresponding cam 161 and interlocking member 404 are in the state shown in FIG. 16-1(A). When the case 2 is inserted, the slider 65 moves and the abutment member 76 moves the engagement pin 169, resulting in the state shown in FIG. 9. The slider 65 is stopped by a stopper 410 as shown in FIG. 14(B),
It won't move any further. This state is the state shown in FIGS. 16-T (B). The engagement pin 169 is connected to the coil spring 16
3 to abut against the abutting member 76;
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 tx in the timing chart of FIG. 15).

The microswitch 200 detects this state, and the disc clamping mechanism 90 clamps the disc 6 and starts pulling it out from the case 2. The motor 165 is energized and the cam 16
1 is rotated in the A2 direction shown in FIG. 14(B), and the lever 167.
168 is pulled in the B2 direction shown in FIG.
situation). This state is the state shown in FIG. 16-1 (C).

At this time, since the cam groove diameter 12 is smaller than 11, the lever 16
2 moves in the B2 direction. The slider 65 is the stopper 41
0, the samurai does not move, but only the lever 162 moves. When the cam 6 rotates further,
The state is shown in FIG. 16-1 (D). Figure 16-1 (C)
When the cam 161 rotates further, the interlocking member 404 is located at the branch point of the cam paths 405a and 405c, as shown in FIG. In this state, the contact member 76 is separated from the engagement pin 169, and the engagement pin 169 is further rotatable in the B1 direction as shown in FIG. 16(D). be. Therefore, the interlocking member 404 has a coil spring 163 on the inner wall surface of the cam path 405a.
When the cam 161 rotates in the A2 direction in this state, the interlocking member 404 enters the cam path 405a. When the cam 161 further rotates, the lever 162 moves to the first position.
The lever 168 moves in the P direction shown in FIG. 4 and in the B1 direction. By moving the lever 162 in the B1 direction, the slider 65 is moved to the state shown in FIG. 14(A), and the state in which the engagement member 62 engages the case 2 is released (
14 states). At the same time, the lever 168 moves in the B1 direction shown in FIG. 14, and the support 180 descends (
14 condition B). When the cam 161 further rotates, the lever 1
67 moves in direction B1 in FIG. 14, lowers the elevating mechanism 134, and places the disc 6 on the turntable 130 (state 15). When the cam 161 further rotates, t6
The position of the cam 161 is detected by a low-return switch (not shown), and the energization of the motor 165 is cut off, thereby stopping the cam 161 (state t6). This state is the state shown in FIGS. 14(A) and 16(A), and the cam 161 has rotated 360 degrees.

Next, the operation of the cam when the case is not inserted will be explained. Even if the micro-sinch 200 detects that the slider 65 of the case expansion mechanism 60 has operated, if the case detection switch 525 does not detect the case, the 25th
According to the flowchart shown in the figure, the slider 65 is returned to the state shown in FIG. 11, and the case is placed in a standby state.

The operation of the cam unit 160 at this time will be explained.

The cam 161 is rotated in the A1 direction and is in the state shown in Fig. 16-2. This state is the state at t13 in the timing chart shown in FIG. 10, and both the lifting mechanism 134 and the support 180 are not operating. Also, the interlocking member 40
4 is beyond the 4038th branch. From this state, the interlocking member 404 enters the cam path 405a, and FIG.
The state of D) is reached, and the substantially fixed state of the case 2 is released. This state is detected by a rotary switch (not shown) and the cam 161 is stopped, thereby entering the disc case insertion standby state (1o state).

Next, the operation after the disc 6 is inserted will be explained. After this, when the playback switch is turned on, playback starts. After the playback is finished, the turntable 130 stops and becomes ready for removal, and when the case 2 is inserted into the case locking and expanding mechanism 60, the locking state of the slider 65 is released as described above, and the case 2 is removed. is almost fixed to the expansion mechanism (
17 states).

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

The microsinch 200 detects this state, and the cam 16
The motor 165 is energized so that the motor 1 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.
4 rises and supports the disk 6 above the turntable 130. The lever '-168 is pulled and support 1
80 rises and supports the disk 6 (t9 shape B).

When the cam 161 further rotates, the lever 167 moves in the B1 direction, lowering the elevating mechanism 134 (state t10).

Thereafter, the disk 6 is recovered into the case 2 by the disk holding mechanism 90. During this operation, the cam 161 rotates, the lever 168 moves in the B1 direction, and the support 180
falls (t11 state). When the cam 161 further rotates, the interlocking member 404 moves to the branching member 403b as described above.
After facing the cam path 405b, it enters the cam path 405b, as shown in FIG.
The lever 162 moves the slider 65, and the substantially fixed state of the case 2 is released, resulting in the state shown in FIGS. 8 and 16 (A>).

To briefly summarize each state in Fig. 15, 1o is the standby state, Ll is the case inserted state, t2 is the lift raised position, t3 is the support raised position, t3' is the start of slider movement, and t4 is the slider lock (case removed). , t5 is the lift lowered position, t6 is the standby state, t7 is the case inserted state, t8 is the lift 1 - raised position, t9 is the support raised position, 11G is the lift lowered position, tI+ is the support lowered position, t1□ is the slider lock (case detachment) and t13 indicate cam path branch points, respectively.

Operation Next, how the entire reproducing apparatus according to this embodiment operates with the above configuration will be explained step by step. 1st
Figures 7 to 22, and Figure 23 (A).

24(B) and FIGS. 24(A) to 24(C) are all schematic explanatory diagrams showing how the operations of each part of the reproducing apparatus are performed in conjunction with each other.

First, FIG. 17 shows the state before the case 2 is inserted into the main body 50 of the playback device. At this time, the disc holding mechanism 90 is located slightly in front of the center of the turntable 130 as shown in the figure.

The disk holding mechanism 90 is in the aforementioned "non-holding state".

Further, the support 180 is in a downward position as shown in FIG. 23(A).

Next, the case 2 passes through the insertion opening 51 and moves to the guide 52°53.
When the case is guided and inserted into the case locking and expanding mechanism 60,
The opening of the case 2 is expanded by the expanding member 66, and in this state, the retaining hole 13 is engaged by the engaging member 62, and the case 2 is substantially fixed to the playback device main body 50.

This state is detected by the micro-sinch 200 and the case detection switch 525. At this time, if the case detection switch 525 does not detect the case 2, that is, the case 2 is not inserted and the retaining member 62 is rotated with a finger or the like.
When the slider 65 is in the operating state, the cam 161 is operated according to the flowchart in FIG.
5 and returns to the case insertion standby state.

Next, the operation when case 2 is inserted will be explained.

This state is detected by the microswitch 200 shown in FIG. 6, and the motor 114 is operated to drive the belt 111, thereby moving the disk holding mechanism 90 forward (in the X direction) in the figure.

Then, as shown in FIG.
contact, the restriction on the sliding member 102 is released, the sliding member 102 slides to the right (in the direction of arrow X2), and the disc holding mechanism 90 enters the [M-disk holding state] as described above. At this time, the contact portion 102a of the sliding member 102 contacts 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, the roller 103 provided on the sliding member 102 and the slope 190b of the reversing lever 190 come into contact with each other, but since the reversing lever 190 is rotatable in the direction of arrow R2 in FIG. There is no problem in transferring the disk holding mechanism 90 just by doing so.

Next, FIG. 19 shows the state during the transfer.

As shown in the figure, the lid 3 and the disk 6 are held by a disk holding mechanism 90 and pulled out from the case 2. Now, when the disk 6 is pulled out halfway as shown in this figure, the supporter 180 rises to hold the group guard 33 of the disk 6 as shown in FIG. 23(B). At this time, support 1
80 is only in contact with the group guard 33, so it will not damage the signal surface of the disk 6.

When the disk holding mechanism 90 is further moved rearward (X2 direction), the center boss 131 at the center of the turntable 130 and the center hole 34 of the disk 6 are
and come to approximately corresponding positions.

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, the center mounting ring 133 is attached to the cam unit 160.
It rises by the action of , and holds the center of the disk 6.

FIG. 24(A) is a diagram explaining this state from the side. Next, as shown in FIG. 24(B), the support 180 is lowered by the operation of the cam unit 160. Next, when the disk holding mechanism 90 is further moved backward (X2 direction), the roller 103 provided on the sliding member 102 of the disk holding mechanism 90 and the slope 510 of the release mechanism come into contact with each other, and the sliding member 102 comes into contact with the slope 510 of the release mechanism. acts on the left side (Y direction), and the above-mentioned “
The state is "lid held". In other words, the disk 6 is not held by the disk holding mechanism 90, and this is the 21st
This is the state shown in the figure. In this state, the disk 6 is held by the mounting ring 133 in the center as shown in FIG. 24(C) of No. J1.

After that, the mounting ring 13 is moved by the operation of the cam unit 160.
3 is lowered, the disc 6 is placed on the turntable 130. Next, the cam unit 160 operates to release the engagement between the engagement member 62 of the case locking and expanding mechanism 60 and the case 2, and the empty case 2 can be removed from the playback device. .

In this state, the turntable 130 rotates, the arm housing 120'' scans over the disk 6, and reproduction is performed. At this time, since the lid 3 is held from below by the lid holding members 41 and 42 as shown in FIG. 21, it will not hang down and come into contact with, for example, the arm housing 120 while traveling.

The collection operation after the playback is completed will be explained.

At this time, as in the case of insertion, there is a possibility that the case expansion mechanism 60 may be operated with a finger or the like without inserting the case 2. As in the case of insertion, if the case 2 is not detected, the cam unit 160 is operated to return the case locking/expanding mechanism 60 to the case insertion standby state.

Next, the operation when the user inserts case 2 will be explained. When the playback is finished and the user inserts the empty case 2 into the playback device, the case locking/expanding mechanism 60
The engaging member 62 engages with the case 2, and the case 2 becomes substantially fixed to the playback device main body 50. The microsinch 200 detects this state in the same manner as described above, and
This time, the cam unit 160 operates and the mounting ring 13
3 rises to the state shown in FIG. 24(C).

Next, the motor 114 drives the belt 111, and the disk holding mechanism 90 is now moved forward (in the direction of arrow X1), shifting to the state shown in FIG. 24(B). Then, the support 180 is raised by the operation of the cam unit 160,
The state shown in FIG. 24(A) is reached. After this, the mounting ring 133 is placed on the cam unit 160.
The disc holding mechanism 90 moves forward (X) while holding M3 and the disc 6.

motor 114. It is transported by the heald 111. In other words, the state shown in FIG. 20 shifts to the state shown in FIG. 19.

When the disk holding mechanism 90 is further moved forward (in the X direction), the roller 103 provided on the sliding member 102 and the slope 190a of the reversing lever 190 come into contact. 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", and 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 also operates to release the engagement between the case 2 and the engagement member 62 of the case locking/expanding mechanism 60, and the disc 6 is housed in the case 2, and the lid is closed. 3 is engaged with the case 2, the case 2 can be taken out from the playback device main body 50.

In this way, the user attaches the case 2 to the playback device main body 50.
By just slightly inserting the disc 6, the disc 6 is automatically taken out from the case 2 and playback becomes possible, and the disc 6 is also automatically stored in the case 2. Therefore, it is convenient to use since there is no need to manually move the case 2 back and forth significantly, and reliable operation can be expected even under severe use by the user. Further, since only the disc 6 and the lid 3 are pulled in without pulling the entire case 2 into the playback device main body 50, there is an advantage that the playback device main body 50 can be made thinner than when the entire case 2 is pulled in. .

The reproducing apparatus of this embodiment operates in this manner, and these operations can be controlled by, for example, a microcomputer. 1. The disk holding mechanism 90 is controlled by a microcomputer and a normal control circuit.
The above operation can be performed by sequentially operating the motor 114 that drives the arm housing 120, the motor 124 that drives the arm housing 120, and the cam drive motor 165.

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

Note that, instead of relying on the mechanism in which the disk holding mechanism 90 directly holds the disk 6 as in the above embodiment, for example, the structure shown in FIG.
If a case 300 is used in which the lid 302 is formed into a frame shape and surrounds the disk 350 as shown in A) and (B), the lid 302 and the disk 35 can be separated from the case body 301.
In order to pull out the 0, it is sufficient to simply engage the notch 303 as shown in the figure using, for example, a mold retaining means and pull it out. However, in this case, from the state shown in Figure 20 above to the second
There is no need to move to the state shown in FIG. 1, and playback can be performed by lowering the disc in the state shown in FIG. 20. In other words, it is also possible to provide a regeneration device that does not require the upper clamp arm 95 and the lower clamp arm 96. Further, as a method for pulling out the lid 302 from the case 301, for example, the roller 370 in FIG. It is also possible to create a configuration that brings out the following. Note that FIG. 25(A) shows a state in which the case 300 of FIG. 25(B) accommodates the lid 302 and the disk 350.

Effects of the Invention In the recording disc playback device of the present invention, even if the user accidentally touches the starting means of the transfer means within the main body of the playback device without inserting the case, the operation of ejecting and collecting the disc will not be performed. First, it is possible to maintain the case insertion standby state or return to this state, thereby preventing accidents and ensuring that the disc can be taken out and recovered from the disc case.

[Brief explanation of the drawing]

FIGS. 1A and 1B are a plan view and a sectional view of a disk that can be used in an embodiment of the present invention, and FIGS. 2 and 3 are exploded perspective views of a disk case that accommodates the disk, respectively. 4(A) to 4(C) are respectively a front view, a plan view, and a side view of the lid of the disc case. FIG. 5 is an external perspective view of an embodiment of the present invention. FIG. 6(A) is a perspective view of its schematic configuration, FIG. 6(B) is a sectional view of the rail portion of the movable base, and FIG. 6(C) is a perspective view of the cam unit and lifting mechanism. , FIGS. 7(A) to (C) are a plan view, a sectional view, and a front view of the disk holding mechanism in the lid/disc holding state, and FIGS. 8(A) and (B) are respectively the same.
9(A) and 9(B) are a plan view and a sectional view of the disk holding mechanism in the lid-holding state, respectively, FIG. A) and (B) are operation explanatory diagrams showing the relationship between the sliding part +4 of the disc clamping mechanism and the clamp arm, and Figures 11 (A) to (C) are diagrams of the same case locking and expanding mechanism. A plan view, a cross-sectional view, and a front view of the case in the non-inserted state, and FIGS. Figures (A) - (
C) is an explanatory diagram of the operation of the case locking and expanding mechanism, FIGS. 14A and 14B are explanatory diagrams of the operation of the cam unit, and FIG. 15 is a time chart of the cam unit. 1 and 16-T1 are explanatory diagrams of the operation of the cam unit, FIGS. 17 to 22 are explanatory diagrams of the operation of the entire playback device seen from above, and FIG.
A) and (B) are operation explanatory diagrams showing the relationship between the support and the disc, Figures 24 (A) to (C) are operation explanatory diagrams showing the longitudinal side of the playback device, and Figure 25 is the operation. Explanatory flowchart, No. 26. FIG. 27 is an explanatory diagram of the release mechanism, FIG. 28(A) is a perspective view of a disk case of another embodiment, and FIG. 28(B) is a perspective view showing the relationship between the disk case and rollers. l...Disk case, 2...Case body, 3...
- Lid, 6... Disc (recording medium), 13... Retaining hole (retaining part), 40... Chassis, 50... Playback device body, 51... Case insertion slot, 60... ... Case locking and expanding mechanism (locking means), 62 ... Retaining member, 62a
...Abutting end, 65...Slider, 80...Fixed base, 90...Disk clamping mechanism, 91...Movable base, 95...Upper clamp arm, 96...Lower clamp Arm, 99.100... Lid It stop member (mold holding means), 107, 108... Release member, 120... Arm housing, 134... Disc lifting mechanism, 160
...Cam unit, 180...Support, 200~
205...Micro switch, 508...Release mechanism, 510...Slope, 513,514...Photo switch, 525...Case detection switch ψ , 514 513 Procedural amendment (c) February 4, 1985

Claims (3)

[Claims] (1) A recording disk using a disk case consisting of a disk case body that has an opening at one end and has a storage space inside that can accommodate a disk-shaped recording medium, and a lid that removably engages with the opening. The playback device includes a detection means for detecting the disk case inserted into a disk case insertion slot of a main body of the playback device, and a transport for transporting the disc-shaped recording medium in the disk case in a direction into and out of the disk case. means, locking means for substantially fixing the disc case near the insertion opening, and operating the transporting means only when the detecting means detects that the disc case has been inserted, and transporting the disc-shaped recording medium. and controlling the locking means to release the locking means from substantially fixing the disk case when the detection means does not detect the disk case. A recording disk reproducing device having a control means. (2) a clamping means for clamping the disk and a clamping means moving means for moving the clamping means;
The recording disk reproducing apparatus according to claim 1, further comprising a release means for releasing the grip of the gripping means. (3) The control means is configured to cause the transfer means to return to a standby state for inserting the disk case main body when the transfer means malfunctions while the detection means does not detect insertion of the disk case. A recording disk reproducing apparatus according to claim (1) or (2), wherein the recording disk reproducing apparatus is controlled to: