JPS6182370A - 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 it, and
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 proposed 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 accidentally inserts an empty disc case while the disc is being inserted, even in this case, the clamping means is automatically moved and operated to clamp the disc in the disc case.

However, an accident occurred in which the transfer means continued to operate without being able to nip the disk because there was no disk. Such malfunctions frequently occur in the market, and this has hindered the spread of autoloading type recording disc playback devices in the market.

Purpose of the Invention The present invention aims to provide a playback device that can prevent an accident by not performing a normal disc ejecting operation when a user accidentally inserts an empty disc case into the playback device main body. purpose.

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 holding means for holding the disk-shaped recording medium in the disk case inserted into a disk case insertion slot of a main body of the playback device, and a holding means for moving the holding means. a transport means for positioning the disc-shaped recording medium on a turntable; and an operation for the transport means to position the disc on the turntable only when the disc case is inserted into the recording disc reproducing apparatus. and control means for controlling the transfer means to perform the following.

Because of this configuration, even if the user inserts an empty disc case that does not contain a disc when inserting a disc, the disc will not be ejected and the empty disc case will not be accepted, preventing accidents. can.

Description of examples Examples 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 retaining member 62 serving as a case engaging means is attached to the fixed base 80 so as to be vertically movable. The fixed base 80 is further provided with a case expansion mechanism 60 for opening 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). The movable base 91 is provided with a disc clamping mechanism 90 serving as disc clamping means and neck hanging members 99, 100, and is a transfer means for pulling the disc 6 from the case 2 onto the turntable 130 together with the lid 3 by the movable base 90 and its driving means. is configured. Reference numeral 201 denotes a detection switch consisting of a micro-sinch, which serves as a means for detecting the state in which the disk 6 is being held by the disk holding mechanism 90.

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
and an inner circumference grouper F32. Ll is the inner diameter of the disk 6, L2 is the diameter of the disk 6, T1 is the thickness of the grouper, and T2 is the thickness of the recording surface. In FIG. 2, a rectangular disk case 1 has a disk case main body 2 (hereinafter referred to as the case) and a lid that is removably connected to an opening 7 provided on the front side of the case 2 in the insertion direction X1 into the device. 3. Case 2
The lid 3 is 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 consists of a flat plate part 8 having groove-like recesses 17 on the left and right sides, and protrusions 9°, 10, and 11 along the three sides of the flat plate part 8. A retaining hole 13 is formed in the center near the opening 7, into which a protrusion of the lid 3, which will be described later, engages.On the left and right sides of the opening 7, there are engaging holes 16, into which the protrusion of the lid 3 engages. is formed.

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.
A notch 19 is provided symmetrically about the center line (7) 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 projection 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. Figure 6(A)-(C
) The figure shows the basic configuration of a recording disk reproducing device.

In FIG. 6(A), 130 is a turntable;
The disc 6 is placed thereon and the disc 6 is placed in a playback state. 131
has a center boss, which centers the disc 6 placed on the turntable 130-to.

Reference numeral 132 denotes a clamp, which presses the disc 6 placed on the turntable 130 into contact with the turntable 130. 40 is a chassis to which guides 52 and 53 for guiding the case 2 into the playback device main body 50 are fixed. Guides 52a and 53a are guide grooves.

Reference numeral 60 denotes a case expansion mechanism, which is fixed on the chassis 40 near the case insertion opening 51. Reference numeral 66 is an expansion member that is supported by the fixed base 8o so as to be movable up and down, and the support member 61 fixed to the fixed base 80 allows the case 2
expand. Fixed base 80 is fixed to chassis 4o. The engaging member 62 is attached to a fixed base 8° 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, and a movable base 91
is formed integrally with. A lower clamp arm 96 is supported by a bearing 97 so as to be movable up and down, and the disc 6 is clamped between these arms. Reference numerals 99 and 100 denote neck hanging members, which are supported by pins 105 and 106 so as to be horizontally rotatable with respect to the movable base 91.
9 to lock and lock the lid 3. A leaf spring 94 is attached to the movable base 91 at a position where it comes into contact with the lid 3.

Denoted at 107 and 108 are claw-like release members formed integrally 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 V grooves on both sides as shown in FIG. 6(B), and a roller 92 rotatably mounted on a movable base 91 is fitted into the groove of the rail 45. Therefore, the disk holding mechanism 90 is connected to the rail 45.
It never deviates from 46.47. The movable base 91 is fixed to the connection piece I-111. Held 1
11 is a gear hung between 112 and 113,
The belt 111 is driven by the motor 114 with the speed reducer IM1, and the disk holding mechanism 90 is transferred. 120 is an arm housing, a rail 126, a shaft 12
2, move the top of the turntable 130 in the left and right direction (Y,...
It is supported movably in both directions (Y2 direction). Similarly to the disk clamping mechanism 90, the arm housing 120 also supports the motor 1.
24 and Held (not shown), the turntable 13
The disk 6'' placed on the disk 0 is transported in parallel, and the signal from the disk 6 is picked up.

In FIG. 6(C), 180 is a support that supports the disk 6, and shafts 181. It is supported by a bearing 182 so as to be able to move vertically (in M, M2 directions). The support 180 is provided in two parts, left and right, as shown in the figure, and the support 180 is provided in the Y, Y2 direction (see FIG. 6(A)) so that the group guard 33 of the disk 6 can be held.
It is configured to be able to hold a larger range than the diameter of the group guard 33. Further, the support 180 is configured to be in a state below the turntable 130 and a state in which it can protrude above the turntable 130 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 raises 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 unit, the above-mentioned support 180,
Disc lifting mechanism 134. It drives the case expansion mechanism 60. The cam 161 is horizontally rotatably supported by a shaft 176 and receives forces l,
It is configured to rotate under the power of a drive motor 165. 162 is a lever, and shirt l-1 f9. It is horizontally rotatably supported by a bearing 163 and urged in the P1 direction by a spring 172. Lever 167.168
are respectively shafts 178. It is rotatably supported by bearings 170 and 171. Each lever 162°167
．． 168 are respectively linked to the cam 161 so as to operate according to the cam diagram of the force 161 (FIG. 15).

190 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, biased in the Q direction by a spring 192, and positioned by a block 191.

+40&yo turntable drive motor. In FIG. 6(A), 201 is a detection switch consisting of a microsinch, which detects the clamping state of the disc clamping mechanism 90. Micro switch 202-205
, and 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 is composed of a slope 510, a block 509, and a rotating lever 511, and is operated by a pin 520.
It is instructed to be freely rotatable in the E2 direction. Rotating lever 51
1 is connected to a lever 515 provided on the elevating mechanism 134 via a weight 512, and is configured to rotate in conjunction with the operation of the elevating mechanism. Note that block 509
is a guide that reliably guides the roller 103 to the release mechanism 508 even if the position of the roller 103 is slightly shifted.

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. 92 is 4
The rollers are rotatably supported by the movable base 91 and engaged with the rails 45 as shown in FIG. 7(C).

A roller 93 is rotatably supported on the opposite side of the movable base 91. Reference numeral 94 denotes a leaf spring, which is attached to a position where it comes into contact with the lid 3. Reference numeral 95 denotes an upper clamp arm, which is formed integrally with the movable base 91, and is provided with a claw 95a as shown in FIG. 7(B). The lower clamp arm 96 is rotatably supported by a bearing 97 and biased by a spring 98 in the direction of arrow 98a. Reference numerals 99 and 100 denote locking members that engage with the notches 19 of the lid 3 to lock and lock the lid 3.

The latching 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. Further, the latching member 99° 100 is provided with driven ends 115 and 116, respectively, which are guided by cams 113° 114 provided on the sliding member 102.

The sliding member 102 is approximately plate-shaped, and has cam grooves 113 and 114.
is guided by pins 105 and 109 and moves approximately linearly in the direction of arrow Y1 or Y2. A roller 103 is rotatably attached to the sliding member 102 on the left side of the center in the figure.
Also, a protrusion 102b is provided, and a contact portion 102a is provided on the opposite side.
and a spring hook 110a. The protrusion 102b passes through the square hole 91b made in the movable base 91 and connects the rotating member 1.
01 (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. Furthermore, the sliding member 102 is provided with a wedge-shaped portion 102c, as shown in FIG.
As shown in B), the wedge-shaped portion 102c and the lower clamp arm 96
It is configured so that it can come into contact with the abutting end 96a of. The rotating member 101 is horizontally rotatably supported by a movable base 91 by a fulcrum 101a, and is supported by a spring 104 as indicated by an arrow 101.
a It is urged to rotate in the direction shown in 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 101b has a sloped shape as shown in the figure.

Reference numerals 107 and 108 are release members provided at both ends of the movable base 91, which engage with the inclined portion 26 of the protrusion 24 of the lid 3 to release the lid 3.
This is to release the engagement between the case 2 and the case 2. Reference numeral 109 denotes a contact plate, which is provided at a position where it can come into contact with the microswitches 202-205. 515 is a blocking board,
It is provided so as to block the windows 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. A connecting piece 110' connects the bell 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".

As shown in FIG. 7(A), this is a state in which the lid 3 is hung and the disc 6 is clamped. In this state, the sliding member 1
02 is located closest to the right side of the figure (in the direction of arrow Y2) among the three states. The latching 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 (in the direction of arrow X1). The rotating member 101 is in contact with the contact end 101cT: the lid 3. The lower clamp arm 96 is in a state of clamping the group guard 33 of the disk 6 as shown in FIG. 7(B). In this state, the claw 95a of the upper 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 contacts 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 is as shown in FIG. 7(B).
The group guard 3 is biased in the direction of arrow 9.8 b.
It is holding 3.

The second state is a "differential hold 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 in an intermediate position among 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 in the [lid/disk holding state], and the lid 3 is not hung as shown in FIG. . However, in this state, since the sliding member 102 has moved from the "lid/disk holding state" to the left side (Y direction) in the figure, the wedge-shaped part 102 is no longer attached as shown in FIG. 10(B).
c 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.
), it opens in the direction of arrow 98a, and the disk 6
It is in a state where it is not pinched.

The third state is a "non-retention state". This state is the 9th
As shown in the figure, the lid 3 is not hung and the disc 6 is not clamped. The sliding member 102 is in the position closest to the left side (Y direction) of the three states. The neck hanging members 99 and 100 have driven ends 115 and 116, respectively.
are guided by the cam grooves 113 and 114 and are in an open state as shown in FIG. The lower clamp arm 96 is open, as in the state shown in FIG. 8, and does not clamp the disc 6.
It is in state 1. The rotating member 101 is in the position shown in the figure,
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 restricted from sliding to the right (Y2 direction) in the figure by the biasing force of the spring 110.

In this way, the disc holding mechanism 90 can take three states: "lid/disk holding state", "differential 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 (Yl, Y2 direction) of 02. In other words, by changing the position of the sliding member 102 in the Yl and Y2 directions, an "M-disc holding state" and a "differential 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 above, [
The differential 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. In FIGS. 26 and 27, the release mechanism 508 is
This shows an operation in which the holding mechanism 90 releases the state in which the disc 6 is held. Figure 26 (A) is Figure 27 (B)
It is in a state of 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 lever 5
11 is pulled, the release mechanism rotates in the E1 direction and enters the state shown in FIG. 27(C). If the holding mechanism 90 moves in the X2 direction in this state, the roller 103 will climb up the slope 510 and move to the second position.
The state shown in Fig. 7 (D) is obtained. , this state is the above-mentioned "differential holding state". This state is shown in FIG. 26(B), and the state in which the disk 6 is held by the holding mechanism 90 is released.

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. 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 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, and the bins 71 and 70 are engaged with each other, so that the arrow Y in the figure
, and 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 engaging portions 69, and with this configuration, the expanding member 66 is rotated in the direction of the arrow V2 in the figure by the slider 65 working to the right in the figure (in the direction of the arrow Y2). , and by working to the left in the figure (in the direction of arrow Y1), it will rotate in the direction of arrow ■1. 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, 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 this 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 is not inserted into the playback device, the case expansion mechanism 60 is in the state shown in FIGS. 11(A) to 11(C).

That is, the notch 65 of the slider 65 and the engaging member 62 come into contact with each other, and the slider 65 is regulated in the state shown in the figure against the biasing force of the spring 73. Therefore, the expanding member 66
It will be regulated at the positions shown in Figures (B) and (C). The case 2 is inserted into the case expansion 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 expansion mechanism 60.

FIG. 13(A) shows the case expansion mechanism 60 in the same state as FIGS. 11(A) to (C).

When the case 2 is inserted into the case expansion mechanism 60 in this state while being guided by the case guide 75 in the direction of arrow 2 is expanded as shown in FIG. 13(B). Then, when the case 2 is further inserted, the engaging member 6
The contact end 62a of the engagement member 62 contacts the open end of the case 2, the retaining member 62 rotates in the W2 direction in the figure, and the engagement end 62b of the engagement member 62 contacts the opening end of the case 2, as shown in FIG. 13(C). Engagement hole 1 of case 2
3. In this case, the notch 65 of the slider 65
C and the engaging member 62 are no longer in contact with each other, and the slider 6
5 slides to the right (Y2 direction) as shown in FIG. 12(B) by the biasing force of the spring 73. In the state shown in FIG. 12(B), the expanding member 66 rotates in two directions 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 contact end 76 of the slider 65 is moved to the left side (Y
1 direction), the slider 65 moves in the direction of arrow Y1, and when the notch 65c comes to the position of the engaging member 62 as shown in FIG. Rotate in the direction of arrow W1 to engage the engagement hole 1 of the case 2.
3 and the engagement member 62 is released.

As described above, the case 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 case 2 can be easily engaged with the case 2. can be canceled.

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 microsinch 200 detects whether or not the case 2 is engaged with the engagement member 62, and a lamp 500 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 confirm whether or not the case 2 is engaged. The lamp 500 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 the engaged state to the disengaged state.

The cam unit 160 will be explained in detail.

14 and 16-2 are operation explanatory diagrams, and FIG. 15 is a timing chart diagram illustrating the movement of the lever. 1st
In FIG. 4, the cam 161 is horizontally rotatably supported by the shaft 116, and a bell) 175. 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 groove 400 of 61 is provided, and when the cam 161 rotates, the cam 1li4
Each operates in conjunction with 00. 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 184 fixed to the shaft 181 via a coupling member 174 (not shown in FIG. 14, see FIG. 6(C)), and rotates the shaft 181. The support 180 is raised and lowered by moving the support 180 up and down.

The lever 162 is biased in the B1 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 B1 direction. The retaining pin 169 is provided on the lever 162 so as to come into contact with the abutment 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 diameter 7!1 is larger than 12. The cam grooves 400 for driving the levers 167 and 168 are provided to operate according to the timing chart shown in FIG. 10, respectively.

Next, the operation of the cam unit 160 will be explained with reference to the operations of the cam 161 and the lever 162 in FIGS.
, 11. FIG. 14 shows a state in which the case 2 is not inserted into the reproduction 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 shown in FIG.
), it is stopped by a stopper 410 and will 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 tx in the timing chart of FIG. 15).

The micro-sinch 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 direction A2 (not shown in FIG. 14(B)), and lever 167.1 is rotated in the direction A2, not shown in FIG.
168 is pulled in the B2 direction shown in FIG.
, 18 states). This state is the state shown in FIG. 16-1 (C). At this time, since the cam groove diameter e2 is smaller than β1, the lever 162 moves in the B2 direction. Since the slider 65 is locked by the stopper 410, it does not move, and only the lever 162 moves. When the cam 6 further rotates, the state shown in FIG. 1'61 (D) is achieved. No. 16-1
When the cam 161 rotates further from FIG.
62 is urged to rotate in the direction P by a spring 163, and in this state, the contact member 76 is separated from the engagement pin 169, and as shown in FIG.
9 is in a state where it can further rotate in the P direction. Therefore, the interlocking member 404 is urged into contact with the inner wall surface of the cam path 405a by the coil spring 163, and in this state, the cam 161
When the linking member 404 rotates in the A2 direction, the interlocking member 404 moves to the cam path 40.
Enter 5a.

When the cam 161 further rotates, the lever 162 moves to the 14th position.
The lever 168 is moved in the B1 direction shown in the figure.

move in the 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 (t4 state). At the same time, the lever 168 moves in the B1 direction shown in FIG. 14, and the support 180 descends (state 1).

When the cam 161 further rotates, the lever 167 moves to the 14th position.
It moves in the B1 direction in the figure, lowers the elevating mechanism 134, and places the disc 6 on the turntable 130 (state t5). When the cam 161 further rotates, it enters the state t,
The position of the cam 161 is detected by a rotary switch (not shown) and the power to the motor 165 is cut off.
stops (2 (t6 state B). This state is shown in Fig. 14 (
A) and FIG. 16(A), the cam 161 has rotated 360°.

Next, the operation of the cam when the detection switch 201 does not detect the disk nipping state will be described.

Even if the case 2 is inserted and is in the tl state, and the disc clamping mechanism 90 is moved and comes to the position where it clamps the disc 6, if the detection switch 201 does not detect the clamping state,
The collection operation is performed according to the flowchart shown in FIG. Thereafter, the cam is rotated in the A1 direction, resulting in the state shown in FIG. 16-11. This state is the state tl3 in the timing chart shown in FIG. 10, and both the lifting mechanism 134 and the sabot 1-180 are not operating. Furthermore, the interlocking member 404 extends beyond the branching member 403a. From this state, when the cam is rotated in the A2 direction opposite to the above, the interlocking member 404 enters the cam path 405a in FIG.
The state of 1)) is reached, and the substantially fixed state of the case 2 is released. Rotary switch (not shown)
By detecting this and stopping the cam, the disc case becomes ready for insertion (1o state B).

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 expansion mechanism 60, the locking state of the slider 65 is released and the case 2 is expanded as described above. It is substantially fixed in the open ia groove (t7 state). This is the state shown in FIGS. 9 and 16(B). The micro-sinch 200 detects this state, and the motor 165 is energized so that the cam 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 of FIG.
Support above 30. The lever 168 is pulled, and the support 180 rises to support the disk 6 (state t9). When the cam 161 further rotates, the lever 167 moves in the B1 direction, lowering the 1!1m structure 134 (
tl (l state). 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 sabot 180 descends (tl, state). When the cam 161 further rotates, the interlocking member 404 faces the branching member 403b and then enters the cam path 405b as described above, resulting in the state shown in FIG. 16(A), the lever 162 moves the slider 65, and the case The substantially fixed state of 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, 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 raised position, t9 is the support raised position,
t10 indicates the lift lowering position, tI+ indicates the support lowering position, tl2 indicates the slider lock (case detachment), and '+3 indicates the cam path branching point.

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 2 is guided and inserted into the case expansion mechanism 60, the opening of the case 2 is expanded by the expansion member 66, and in this state, the retention hole 13 is engaged by the retention member 62, and the playback device main body 50 It is approximately fixed at .

Next, in this state, the microsinch 20 shown in FIG.
0 is detected, the motor 114 operates, and the disk holding mechanism 90 is moved forward (in the figure) by driving the heald 111.
X, direction).

Then, as shown in FIG. 18, the disk holding mechanism 90 enters into the expanded case 2. In this state,
In the correct state, that is, in a state in which an unnecessary load is applied to the case 2 or the case is not empty, the holding mechanism 90 is in a state in which it holds the disk 6. First, we will explain the operation in the correct state. The rotating member 101 comes into contact with the lid 3, the restriction of the sliding member 102 is released, and the sliding member 102 slides to the right (in the direction of arrow X2), and as described above, the disc holding mechanism 90 "holding state". At this time, the contact portion 102a of the sliding member 102 contacts the detection switch 201, and the disk holding mechanism 90 is in this position.
It is detected that the device is in the “lid/disc holding state”. 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 reversing lever 19
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, 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 support 180 rises as shown in FIG. 23(B) and holds the group guard 33 of the disk 6. At this time, support 1
80 only touches the group guard 33, so it does not damage the signal surface of the disc 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 are in 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 508 come into contact with each other, and the sliding member 102 acts to the left (Y direction) and enters the above-mentioned "lid holding state". In other words, the disk 6 is not held by the disk holding mechanism 90, 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. 24(C). Thereafter, when the mounting ring 133 is lowered by the operation of the cam unit 160, the disc 6 is mounted on the turntable 130. Next, the cam unit 160 operates to release the engagement between the engaging member 62 of the case 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.

Next, the case where an empty case is inserted and the case where an unnecessary load is applied when inserting the case will be explained. Similarly to the above, the disk holding mechanism 90 enters into the case 2. In the case of an empty case, since there is no lid, the rotating member 101 does not rotate, and the clamping mechanism 90 is not in the "lid/disc holding state".

If a load is applied to the case, the disk holding mechanism 90 is prevented from entering the case 2, and the "lid/disk holding state" is not achieved. Further, it waits for the detection switch 201 to enter. In other words, once the load on the case 2 is removed and the disk 6 is clamped, the device waits for a period of time to resume normal operation. As a result of waiting for a certain period of time, if the detection switch 201 does not detect the disc pinching state, an operation to avoid malfunction is performed according to the flowchart of FIG. 25. The avoidance operation will be explained according to the flowchart in FIG. 25. The state shown in FIG. 18 is the disc clamping state B confirmation position. If the clamping state is not confirmed, the device moves once from this position to the position shown in FIG. 17. After that, it moves again to the position shown in FIG. 18, and then moves again to the position shown in FIG. 22 and stops. This operation is the 1-disc recovery operation in the flowchart of FIG. By performing this operation, it is possible to avoid an accident due to malfunction due to a load being applied to the case 2, and to ensure that the disk 6 is recovered into the case 2. After that, the cam is rotated to the state of t13 (Fig. 16-■, C), and then the case 2 is released from the substantially fixed state by rotating it in the opposite direction, and the case 2 is removed from the playback device main body 50. It can be taken out.

Next, the recovery operation after the disc 6 is correctly inserted and played will be described. When the playback is completed and the user inserts the empty case 2 into the playback device, the engaging member 62 of the case expansion mechanism 60 engages with the case 2, and the case 2 is inserted into the playback device main body 50. It is in a substantially fixed state. The micro-sinch 200 detects this state in the same manner as described above, and the cam unit 160 operates this time to raise the mounting ring 133, resulting in 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, place ring 1
33 is lowered by the operation of the cam unit 160, and the disc holding mechanism 90 moves forward (X) while holding the lid 3 and the disc 6.

motor 114. It is transported by belt 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 in the R direction, the roller 103 climbs the slope 190a and the sliding member 102 moves to the left (Y).

direction) and enters the above-mentioned 1 non-retained 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 is reversely rotated again, and the disk holding mechanism 90 is moved rearward (x2 direction) and returned to the position shown in FIG. 17. After this, the cam unit 160 also operates, and the engagement member 62 of the case 2 and the case expansion mechanism 60
The case 2 is disengaged from the case 2, the disc 6 is stored in the case 2, and the case 2 can be taken out from the playback device main body 50 with M3 engaged with the case 2.

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. Furthermore, even if the user accidentally inserts an empty case when inserting a disc or puts an unnecessary load on the case, accidents caused by such malfunction can be reliably prevented.

The reproducing apparatus of this embodiment operates in this manner, and these operations can be controlled by, for example, a microcomputer. In other words, the disk holding mechanism 9 is controlled by a microcomputer and a normal control circuit.
0 and the arm housing 120.
A motor 124 that drives the force J, a driving motor 165
The above operations can be performed by sequentially operating the following steps.

In addition, the disk holding mechanism 90 may be configured as shown in FIG.
9, FIG. 20, FIG. 21, and FIG. 22, the microswitches 202 to 205 shown in FIG. This is possible by detecting that the abutment plate 109 has come into contact with the contact plate 109 and programming the motor 114 to stop.

Although not included in the present invention, for example, FIG. 25(A) does not depend on the mechanism in which the disk holding mechanism 90 directly holds the disk 6 as in the previous embodiment.

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 FIG. All you have to do is hook the notch 303 as shown in the figure and pull it out. However, in this case, there is no need to move from the state shown in FIG. 20 to the state shown in FIG. 21, and the disc can be lowered and played back in the state shown in FIG. 20. In other words, it is possible to provide a reproducing device that does not require the upper clamp arm 95 and the lower clamp arm 9G. Also, from the case 301 to the lid 3
In order to pull out the 02, for example, the roller 370 in FIG. 25(B) should be in contact with the lid 302 and rotated in the direction of the arrow in the figure by some driving means to pull out the lid 302. is also possible. In addition, Fig. 25 (A
) shows a state in which the case 300 of FIG. 25(B) accommodates M2O3 and the disk 350.

Effects of the Invention The recording disk playback device of the present invention prevents accidents that may occur when a user inserts an empty case due to a malfunction when inserting a disk, and automatically and safely removes and collects disks from the disk case. It has the effect of being able to

[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. Figure 6 (A) is a perspective view of its schematic configuration, Figure 6 (B) is a sectional view of the rail section of the movable base, and Figure 6 (C) is a perspective view of the cam uniso 1- and the lifting mechanism. 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 FIG. 8(A), (B) are respectively the same.
) are a plan view and a sectional view of the disk holding mechanism in the lid holding state, FIGS. 9A and 9B are a plan view and a sectional view of the disk holding mechanism in the non-holding state, respectively, Figures (A) and (B) are operation explanatory diagrams showing the relationship between the sliding member and the clamp arm of the disk holding mechanism, and Figures 11 (A) to (C) are the case of the case expansion mechanism. The plan view, cross-sectional view, and front view of the case expansion mechanism in the non-inserted state, and FIG. (A) to (C) are also explanatory diagrams of the operation of the case expansion mechanism, and Fig. 14 (A
), (B) is an explanatory diagram of the operation of the cam unit, Fig. 15 is a time chart of the cam unit, and Fig. 16 is an explanatory diagram of the operation of the cam unit.
1M and 16-2 are explanatory diagrams of the operation of the cam unit, FIGS. 17 to 22 are explanatory diagrams of the operation of the entire reproducing apparatus as seen from above, and FIG. 23(A). (B) is an explanatory diagram of the operation showing the relationship between the support and the disc, Figs. 24 (A) to (C) are explanatory diagrams of the operation showing a cross section of the playback device, and Fig. 25 is an explanatory diagram of the operation showing the relationship between the support and the disc. Similarly, the flowchart for explaining the operation, No. 26. FIG. 27 is an explanatory diagram of the release mechanism, FIG. 28(A) is a perspective view of a proposed example of the disc case, and FIG. 28(B) is a perspective view showing the relationship between the disc case and the rollers. l...Disk case, 2...Case body, 3...
- Lid, 6... Disc (recording medium), 13... Retaining hole (engaging part), 40... Chassis, 50... Playback device main body, 51... Case insertion slot, 60... ...Case expansion mechanism, 62...Engagement member, 62a...Abutment end, 6
2b...Engaging end, 65...Slider, 80...Fixed base, 90...Disc clamping mechanism, 91...Movable base (transfer means), 95...Upper clamp arm, 9
6... Lower clamp arm, 99° 100... Latching member (mold holding means), 107, 108... Release member, 1
20...Arm housing, 134...Disk lifting mechanism, 160...Cam unit, 180...Zabo 1.200...Micro switch, 2o]...Detection switch (clamping state detection means), 50B...Release mechanism, 510...Slope, 513,514...Photoswitch C) Yabu Figure 26 Procedural Amendment (frame) February 4, 1985 Patent Application No. 205442 2, Invention name recording disk reproducing device 3, relationship with the case of the person making the amendment Applicant 4, attorney 59. Date of amendment order January 9, 1985
Day (1) Specification, page 27, line 9, 1-Figure 16-1”
The text has been corrected to 1, Figure 16A. (2) Specification No. 28, line 17, page 29, line 9,
Page 30, line 10, line 15, line 16, line 18
In the line 1, the text "Figure 16-1" is corrected to read 1-16A, Figure 1. (3) Page 29, line 6 of the specification, “and 16-1,
1. 16A and 16B". (4) Statement box 32 chastity line 13, line 20, line 40
Page 19th line, page 46, line 20, “Figure 16-1”
The text has been corrected to read "Figure 16B." (5) On page 416 of the specification, line 19, the phrase [Figure 16-] is corrected to read ``Figure 16A J.

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 holding means for holding the disk-shaped recording medium in the disk case inserted into a disk case insertion slot of a main body of the playback device, and a holding means is moved to move the recording disk playback device to the disk-shaped recording medium. Detecting the state in which the disc-shaped recording medium in the disc case is being clamped by the transporting means that is transported in the direction of taking it in and out of the disc case, is positioned on the turntable, and is collected into the disc case, and the clamping unit. a nipping state detection means; and a control means for controlling the transporting means to position the disc-shaped recording medium on the turntable only when the nipping state detection means detects the nipping state. Equipped with a recording disc playback device. (2) The control means detects in advance that the disc case is inserted into the disc case insertion slot, and in that state, when the clamping detection unit does not detect the clamping state of the clamping unit, the control unit Claim (1), wherein the transporting means is controlled to perform an operation of collecting the disc-shaped recording medium into the disc case.
Recording disk reproducing device as described in the configuration. (3) The recording disc playback device according to claim 1, wherein the clamping means does not become clamped when the disc case is inserted into the case insertion opening with an excessive pressing force applied.