JPH0259545B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a recording disk reproducing device that can automatically play back a disk by taking out the disk from a disk case containing a disk-shaped recording medium (hereinafter referred to as a disk). It is something.

Prior Art Following the recent popularity of video tape recorders as image and sound playback devices, video signals are recorded on a spiral recording line on a disk, which is placed on a turntable and rotated to produce a pick-up needle. A video disc player has appeared that plays video signals by tracing them. It has functions such as speed search, random access function, clear image, and clear sound, and can be easily used at home using a television, just like a video tape recorder. Among the video disc players currently on the market, the capacitive type uses a front loading system in which the disc is placed in a disc case and the disc is removed from the disc case, leaving only the disc inside the player for playback.

The above-mentioned capacitance type recording disk reproducing apparatus will be briefly described below with reference to the drawings. 27th
The figure shows a perspective view of a conventional recording disk reproducing device with the case removed.

In general, this type of player is roughly divided into an opener mechanism 301 that opens the disc case so that the disc can be taken out, a chucking mechanism 302 that grips the thick part formed on the outer periphery of the disc and takes out the disc, and a turntable 303 that opens the disc. a loading mechanism 304 that is placed on the opener 301 or raised to the same plane as the opener 301;
It consists of an arm housing mechanism 305 incorporating a pickup therein for playing discs, and a circuit group 306 for driving and playing them. The outline of the chucking mechanism in Fig. 27 is as follows:
A finger 307, a clamp stand 308 on it, two clampers 309 that hold the lid, and switch actuators 3 that come into contact with a detection section that displays information on a disk provided in a notch in the lid.
It consists of 10 mag. These series of operations are performed by expanding the disc case with the opener 301 and manually pushing the case into the player.
02 holds the disk, but at this time, by pulling out the empty case, the disk rises and is held near the center of the expanded case, and the loading mechanism 304 automatically loads the disk into the device. The opener 3 is lowered to the top of the turntable 303, and when the disc is retrieved, the opener 3 is moved again.
The structure is such that the disk rises to the position where it is collected into the empty case by movement 01. This has the same structure as, for example, Japanese Patent Application Laid-open No. 111158/1983. These methods involve manually inserting the disc deep into the playback device and manually taking out the empty case.In this case, it is necessary to move the case back and forth a lot, and it does not work perfectly to withstand harsh use by the user. There were a number of problems, including difficulty in configuring the loading mechanism. Therefore, a method of automatically loading the disk case from the front like a VTR has been proposed as in Japanese Patent Laid-Open No. 59-93226. This is equipped with a clamping means for clamping the disc and a transporting means for transporting it within the playback device, and the user can automatically take the disc in and out of the case just by slightly inserting the disc case. . In this configuration, a transfer means holding a disc and a lid is guided by one rail and automatically reciprocates within the playback apparatus to take the disc in and out. In this case, since the lid is provided with a notch for recording information about the disk, it is necessary to provide means for detecting this information on the transport means.

Problems to be Solved by the Invention However, according to the above configuration, even if the transfer means grasps the lid and the disk, it is necessary to attach a detection switch to the transfer means itself.
As a result, it is necessary to move the lead wire inside the player with the lead wire attached to the transport means, making it very difficult to handle the lead wire.There is also the problem of the lead wire getting stuck in the moving part, which is not suitable for mass production. It was completely inappropriate. There is also a method of detecting information on the notch in the vertical direction when the transport means moves to the rearmost position (rest position) inside the player, relative to the movement of the lid (because there is no space to attach switches in the front and rear directions). However, it has been difficult to detect for mass production due to warping of the lid, lifting of the top and bottom of the lid, etc.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a recording disk reproducing apparatus which is a further improvement over the conventional autoloading method and has a structure that allows easy detection of the lid.

Means for Solving the Problems In order to solve the above problems, the recording disk reproducing apparatus of the present invention is provided with a case main body having an opening at one end for storing a disk on which a signal is recorded, and a case body that is removably connected to the opening. A recording disc playback device using a disc case comprising a lid having a plurality of uneven cutouts for transmitting information recorded on the disc, the disc case having a lid having a plurality of concave and convex cutouts for transmitting information recorded on the disc, Case engaging means for releasing the engagement and removably fixing the case body; latching means for latching the lid; and a plurality of latching means for latching the lid and simultaneously abutting the convex portion of the notch. a transmission member; a holding means for holding the disc at a first position, releasing the disc at a second position, which is approximately the center of the playback device, and waiting at a third position; a transport means for reciprocating the latching means, the transmission member, and the clamping means from the second position to the third position; It is equipped with a detection means that indirectly detects information on the lid by being pressed by a contacting transmission member.

Effect The present invention has the above-described configuration to trace the information on the lid using the chucking mechanism for transporting the lid.
This traced object is activated by directly pressing the detection switch, so it has a simple configuration, and there is no need to run lead wires around, making it easy to process the leads at the detection unit, and moreover, it is possible to reliably detect information on the lid. It's summery. Furthermore, since a sufficient clearance can be secured below the rest position of the player, it greatly contributes to making the player thinner.

Embodiment A recording disk reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings. Figure 1A,
B and C show external configuration diagrams of a recording disk reproducing apparatus in one embodiment of the present invention, and FIGS. 2 and 3 show operational diagrams of some of the constituent parts of the present invention. Further, FIGS. 4 to 26 show the constituent elements of the present invention and their peripheral mechanisms. To start with an overview of the playback device, as shown in FIG. 1, the playback device main body 50 is composed of a chassis 40, an exterior case 50a, a turntable 130, and an arm housing 120. The arm housing 120 is equipped with a playback head.
A movable base 91 is installed on the chassis 40 so as to be movable back and forth (in the directions of arrows _X1 and _X2 ).
A claw-shaped release member 10 serving as a lid release means is provided at both ends of 1.
7,108 are provided. release member 107,
Reference numeral 108 releases the engagement between the case 2 (FIG. 5) and the lid 3. The movable base 91 further includes a disk holding mechanism 90 that serves as a means for holding the disk 6.
is provided. The disk clamping mechanism 90 includes an upper clamp arm 95 attached to a movable base 91.
and a lower clamp arm 96. On both sides of the clamp arms 95, 96, lid latching members 99, 100, which serve as lid latching means for latching the lid 3, are attached to the movable base 91 so as to be horizontally rotatable.

Next, the whole will be explained in detail.

FIGS. 4 to 6 show the configurations of a disk and a disk case, respectively, which can be used in the recording disk reproducing apparatus according to this embodiment. Fourth
In the figure, the disk 6 has a center hole 34, and is provided with a bank-shaped outer group guard 33 and an inner group guard 32. In FIG. 5, a rectangular disk case 1 is a disk case main body 2.
(hereinafter referred to as a case) and a lid 3 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.
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,
A disk 6 is housed 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 left and right groove-like recesses 17, and protrusions 9, 10, 11 along the three sides of the flat plate part 8.
It becomes more. An engagement 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, and on the left and right sides of the opening 7, engagement holes 16, into which projections of the lid 3 engage, are formed. is formed.

At the end of the lid 3, there is a flange portion 1 that closes the opening 7 of the case 2 when the lid 3 is engaged and fixed to the case 2.
8 is provided, and a notch 19 is provided symmetrically about the center line l 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 has an inclined portion 26 that engages with the release member of the lid 3.
is provided. FIG. 6 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. Further, since the lid 3 engages with the case 2 to close the opening 7, the disk 6 is housed without falling out of the case 2.

FIG. 5A is a detailed view of the lid 3, in which the shape of the side facing the disk 6 is formed, for example, into an arc with a gap at both ends larger than a gap at the center. This is because the lid 3 and disk 6 are in Z during the playback operation which will be described later.
It is designed to operate stably even if its relative position deviates somewhat in the direction.

The 290 also depends on whether the recording surface of the disc is side 1 or side 2, whether the signal is NTSC or PAL, etc.
These are a plurality of notches in the concave and convex portion that indicate signal information, and the concave portions and convex portions are provided at positions symmetrical to the center line l to distinguish the disc information.

7 and 1 show the recording disk reproducing apparatus of this embodiment, and FIG. 7 shows an external view.

As shown in the figure, a case insertion opening 51 is provided in the outer case 50a of the playback device main body 50. FIG. 1 shows the basic configuration of a recording disk reproducing apparatus. In FIG. 1, reference numeral 130 is a turntable on which the disc 6 is placed and placed in a playback state. Reference numeral 131 denotes a center boss, which centers the disk 6 placed on the turntable 130. 132 is a clamp;
Disc 6 placed on turntable 130
is brought into pressure 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. A case expansion mechanism 60 is fixed on the chassis 40 near the case insertion opening 51. Reference numeral 66 denotes an expansion member supported by the fixed base 80 so as to be movable up and down, and the case 2 is expanded by the support member 61 fixed to the fixed base 80 .
The fixed base 80 is fixed to the chassis 40. The engaging member 62 is rotatably supported on the fixed base 80 by a shaft 74 and a bearing 63, and functions to engage with the case 2 engaging hole 13. 90 is a disk holding mechanism. 95 is an upper clamp arm, which is formed integrally with the movable base 91.
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 indicate lid hooking members, which are connected to the movable base 91 by pins 105 and 106.
It is supported so as to be horizontally rotatable, and engages with the notch 19 of the lid 3 to latch the lid 3. 94
is a leaf spring, which is attached to the movable base 91 at a position where it comes into contact with the lid 3. Claw-shaped release members 107 and 108 are integrally formed with the movable base 91 and 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.

291 is a notch 2 provided on the left and right sides of the lid 3.
The pin holder 292 is a contact pin that works as a transmission member that contacts the pin 90 and transmits signal information, and is inserted into the pin holder 292 and is slidable in the X ₁ and X ₂ directions. This abutment pin 291 is fixed by a spring 293 so that it returns to its original position when it does not abut against the notch 290.
is fixed to the abutment pin 290 with an E ring 294. These plurality of contact pins 291 serve to press a plurality of detection switches provided at the rear of the player as described later (details are shown in Fig. 25).
(described later in FIG. 26).

Furthermore, the movable base 91 of the disk clamping mechanism 90
is caused by the rails 45, 46, 47 in the front and rear direction (X ₁ ,
X ₂ directions) so that it can move freely. The rail 45 has V grooves on both sides as shown in FIG. 1B,
A roller 9 rotatably provided on a movable base 91
2 is fitted into the V-groove of the rail 45. Therefore, the disk holding mechanism 90 is mounted on the rails 45, 46,
It will never deviate from 47. The movable base 91 is fixed to the belt 111 by a connecting piece. A belt 111 is placed between gears 112 and 113, and a motor 114 with a speed reducer drives the belt 111 to transport the disk holding mechanism 90. Reference numeral 120 denotes an arm housing, which is supported by a rail 126 and a shaft 122 so as to be movable on the turntable 130 in the left-right direction (in both directions Y ₁ and Y ₂ ). Arm housing 120
Similarly to the disk holding mechanism 90, the motor 124
A belt (not shown) connects the turntable 1.
It is configured to be transported in parallel over the disk 6 placed on the disk 30 and to pick up the signal from the disk 6. A support 180 supports the disk 6, and is supported by a shaft 181 and a bearing 182 so as to be vertically movable (in the M ₁ and M ₂ directions). The support 180 is provided in two parts, left and right, as shown in the figure, and has a larger area in the Y ₁ and Y ₂ directions than the diameter of the groove guard 33 of the disk 6 so that it can hold the group guard 33 of the disk 6. It is configured so that it can be retained. Also, support 180
is configured so that it can be placed below the turntable 130 or protruded above the turntable 130 to support the disk 6 held by the disk holding mechanism 90.

134 is 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. lift arm 142
By rotating the lift ring 136 supported by the lift arm 142 and located at the lower part of the elevating ring 135, the lift ring 136 is lifted and lowered, and the disk 6 is placed above the turntable 130 by the mounting ring 133 fixed to the elevating ring 135. It is raised and lowered between a supported state and a state placed on the turntable 130.

A cam unit 160 drives the support 180, the disk elevating mechanism 134, and the case expanding mechanism 60 described above. The cam 161 is horizontally rotatably supported by a shaft 176, and is configured to rotate by the power of a cam drive motor 165 via a worm 166. 162
is a lever, supported horizontally by a shaft 179 and a bearing 163, and is supported by a spring 172.
P is biased in _one direction. Lever 167, 16
8 is the shaft 178 and bearings 170 and 17, respectively.
It is rotatably supported by 1. Each lever 162, 167, 168 is 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 horizontally rotatably supported by a shaft 194, biased in the Q direction by a spring 192, and positioned by a block 191. 140 is a turntable driving motor. 200 to 205 are a group of micro switches, and the micro switch 200 is the case expansion mechanism 6.
0 operation detection switch. The micro switch 201 is a switch for detecting the operation of the disk holding mechanism 90. Micro switch 202-205
is a position detection switch for the disk holding mechanism 90. Reference numeral 295 indicates a plurality of lid detection switches, which are fixed in two switch cases 296 on the left and right sides. This lid detection switch 295 is turned on only when the notch 290 of the lid 3 comes into contact with the contact pin 291, and information on the lid 3 is indirectly detected.

Next, the disk holding mechanism 90 will be explained in detail.

8A and 8B, FIGS. 9A and 10B, and FIG. 10 are explanatory views 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. Four rollers 92 are rotatably supported by the movable base 91 and engaged with the rail 45 as shown in FIG. 1B. A roller 93 is rotatably supported on the opposite side of the movable base 91. 94 is a leaf spring;
It is attached at a position where it comes into contact with the lid 3. 95
An upper clamp arm is formed integrally with the movable base 91 and has a claw 95a. Lower clamp arm 96 is rotatably supported by bearing 97 and biased by spring 98 in the direction of arrow 98a. 99,100 is a lid hanging member, which is a lid 3
The lid 3 is latched by engaging with the notch 19 of the lid 3. The lid hanging members 99 and 100 are connected to pins 105 and 1, respectively.
06 so as to be horizontally rotatable relative to the movable base 91. In addition, the lid hanging member 9
9, 100 have driven ends 115, 1 guided by cam grooves 113, 114 provided in the sliding member 102.
16 are provided respectively. Sliding member 102
is approximately plate-shaped, and the cam grooves 113 and 114 are connected to the pin 1.
05,109 guided by arrow Y ₁ or
Moves approximately linearly in _two Y directions. The sliding member 102 has a roller 103 rotatably attached to the left side of the center in the figure, a protrusion 102b, and an abutting portion 102a and a spring catch 110a on the opposite side. The protrusion 102b passes through the square hole 91b drilled in the movable base 91 and connects to the abutting portion 10 of the rotating member 101.
It is configured so that it can come into contact with 1b. Also,
Spring hook 111 and spring hook portion 1 of movable base 91
The sliding member 102 is always biased in the direction of arrow _Y2 by a spring 110 applied between the two ends.
Further, the sliding member 102 is provided with a wedge-shaped portion 102c, and as shown in FIGS. 10A and 10B, the wedge-shaped portion 102c and the contact end 96 of the lower clamp arm
It is configured so that it can come into contact with a. Rotating member 1
01 is horizontally rotatably supported by a movable base 91 by a fulcrum 101a, and urged by a spring 104 to rotate in the direction of an arrow 104a (FIG. 2A). 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. Contact part 101
b 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, and the inclined portion 26 of the protrusion 24 of the lid 3
This is to release the engagement between the lid 3 and the case 2. Reference numeral 109 denotes an abutment plate, which is provided at a position where it can abut against the microswitches 202-205. A connecting piece 110' connects the belt 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 latched and the disc 6 is clamped as shown in FIG. 2A. In this state, the sliding member 102 is located furthest to the right (arrow) in the figure among the three states.
Y ₂ direction). Lid hanging member 9
The driven ends 115 and 116 are guided by cam grooves 113 and 114, respectively, so that the lid 3 is regulated as shown in the figure. 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 lid 3 at the contact end 101c. The lower clamp arm 96 is in a state of clamping the groove guard 33 of the disk 6 as shown in FIG. 2B. In this state, the claw 95 of the upper clamp arm 95
a and the contact end 96a of the lower clamp arm 96 are in a position to contact the groove guard 33. Also, the first
As shown in Figure 0B, the abutting end 96a is wedge-shaped
c, 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 FIG. B and grips the groove guard 33.

The second state is the "lid holding state". this is,
As shown in FIG. 8A, the lid 3 is latched and the disc 6 is not clamped. In this state, the sliding member 1
02 is in the middle position among the three states. The lid hanging members 99, 100, the leaf spring 94, and the rotating member 101 are all in the "lid/disk holding state"
The condition is similar to that shown in FIG. 8, and the lid 3 is latched as shown in FIG. However, in this state, the sliding member 1
02 has moved from the "lid/disk holding state" to the left side of the figure ( _Y1 direction), so as shown in FIG. 10B, the wedge-shaped part 102c and the contact end 96a are no longer
are not in contact. Therefore, the lower clamp arm 9
6 is opened in the direction of an arrow 98a as shown in FIG. 8B by the biasing force of a spring 98, and is in a state in which it does not clamp the disk 6.

At this time, some of the lid detection switches 295 are pressed by the contact pins 291 as described above.
It is in the ON state and detects the recording surface side of the disk 6, the recording method, etc.

The third state is a "non-retention state." In this state, as shown in FIG. 9, the lid 3 is not latched and the disc 6 is not clamped. Sliding member 10
2 is the most left side of the three states (Y ₁ direction)
It is located in the same position as before. The lid hooking members 99 and 100 have driven ends 115 and 116 that are connected to the cam grooves 113 and 116, respectively.
114 and is in the 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 10 of the sliding member 102
2b abut against 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 disk holding mechanism 90 can be operated in "lid/disc holding state", "lid holding state", and "non-holding state".
It can take three states. These three states are all based on the sliding direction of the sliding member 102 (Y ₁ , Y ₂ direction)
It is regulated by the position of In other words, by changing the position of the sliding member 102 in the Y ₁ and Y ₂ directions,
The disk holding mechanism 90 can be changed into three states: "lid/disk holding state", "lid holding state", and "non-holding state". However, among the above three states, in the "lid holding state", the sliding member 102 is held by the spring 1.
It can be held when it is regulated to the state shown in FIG. 8 by some means against a force of 10.

The case expansion mechanism 60 will be explained in detail.
Figure 11 A-C, Figure 12 A-C, Figure 13 A-
C is an explanatory diagram 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. Support member 6
1 is fixed to a fixed base 80. Reference numeral 62 denotes an engaging member, which includes a bearing 63 fixed to the fixed base 80.
It is supported by pins 74 so as to be vertically movable. Also, the spring 72 causes the engagement member 62 to move to the first position.
It is biased in the direction of arrow _W1 in Figure 1B. 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 . A slider 65 is slidably attached to the fixed base 80, as shown in FIG. 11C. The slider 65 has a long hole 65
a, 65b are provided, and pins 70, 7 are provided respectively.
1 engages with each other and slides linearly in the directions of arrows Y ₁ and Y ₂ in the figure. Furthermore, the slider 65 is restricted at its center by the abutting portion 63a of the bearing 63, as shown in FIG. 11C, 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 moves in the direction indicated by the arrow V ₂ in the figure when the slider 65 acts on the right side (arrow Y ₂ direction) in the figure. direction, and also to the left side of the figure (arrow Y ₁
direction), it rotates in the direction of arrow _V1 . Additionally, a spring 73 is applied between the slider 65 and the fixed base 80 as shown in the figure, and the slider 65 is moved to the right side of the figure (in the direction of arrow _Y2 ).
is always encouraged. Further, the slider 65 is provided with an abutting end 76 and a notch 65c. 75
is a case guide which serves to guide the case 2 and is fixed to the fixed base 80.

The above is the configuration of the case expansion mechanism 60. Next, how does this case expansion mechanism 60 work with the case 2?
Explanation will be made on how to expand the case 2 and engage the case 2 so as 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. 11A to 11C.

In other words, the notch 65 of the slider 65 and the engaging member 6
2 are in 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 expansion member 66 is regulated at the position shown in FIGS. 11B and 11C. 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.

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

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

When the case 2 is inserted into the case expansion mechanism 60 in this state as shown in the figure in the direction of _arrow Case 2 is the 13th
It is expanded as shown in Figure B. Then, when the case 2 is further inserted, the abutting end 62a of the engaging member 62
contacts the open end of the case 2, the engaging member 62 rotates in the _W2 direction in the figure, and the engaging end 62b of the engaging member 62 contacts the engaging hole 13 of the case 2, as shown in FIG. 13C.
engage with. When this happens, the notch 65c of the slider 65 and the engaging member 62 are no longer in contact with each other,
The slider 65 is moved to the twelfth position by the biasing force of the spring 73.
Slide to the right ( _Y2 direction) as shown in Figure B.

In the state shown in FIG. 12B, the expansion member 6 is
6 is rotated in the _V2 direction so that taking out the disk 6 from the case 2 is not hindered.

In FIGS. 12A to 12C, the state of the case 2 at this time, that is, the state of the case 2 that is expanded, is shown by a dashed-dotted line. In this state, the engaging member 62 is restricted by the slider 65 so as not to rotate in the _W1 direction as shown in FIG. 12B. Next, for example, if the abutting end 76 of the slider 65 is moved to the left side of the figure ( _Y1 direction) by some means, the slider 65 will move in the direction of arrow _Y1 , resulting in the state shown in FIG. When the notch 65c comes to the position of the engagement member 62, the engagement member 62 rotates in the direction of arrow _W1 due to the urging force of the spring 72, and the engagement hole 13 of the case 2 and the engagement member 62 are rotated. is disengaged.

In this way, the case expansion mechanism 60 of this embodiment
has a means for expanding the case 2 and a means for engaging the case 2, and furthermore, by moving the slider 65, the engagement with the case 2 can be easily released.

Further, in this embodiment, as shown in FIGS. 11 and 12, the micro switch 200 is provided at a position where it can come into contact with the slider 65, so that the case 2 is inserted into the expansion mechanism 60 and the case 2 is engaged. When the slider 65 is engaged and the slider 65 is operated, it is possible to detect that the case 2 is opened and engaged by the microswitch 200. In addition, when the case 2 is engaged with the engagement member 62, the movement of the engagement member 62 is regulated by the slider 65 as described above, so the case 2 does not come off easily and the playback device 50 It is in a substantially fixed state.

Further, the micro switch 200 detects whether or not the case 2 is engaged with the engaging member 62, and a lamp 500 (FIG. 7) serving as a notification means for notifying this detection state is connected to the main body of the playback device. 50. Therefore, the user can easily check whether the case 2 is engaged or not. The lamp 500 includes an engaging member 6
2 is connected so that it continues to light up while it is in the engaged state. 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 are operation explanatory diagrams, and FIG. 15 is a timing chart 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 via a belt 175 and a worm 166, so that the cam 161 can rotate in both forward and reverse directions.
The lever 162 is attached to the shaft 179, and the lever 167,
168 is rotatably supported by the shaft 178, and is provided with an interlocking member (not shown) that engages with the cam groove 400 of the cam 161.
1 rotates, each operates in conjunction with the cam groove 400. The lever 167 is coupled to the lifting mechanism 134 via an interlocking member 173, and the lever 167 is connected to the lifting mechanism 134 via an interlocking member 173.
4. 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. 6C), and by rotating the shaft 181, The support 180 is raised and lowered. The lever 162 is a coil spring 16
Therefore, the interlocking member 404 provided on the lever 162 is always in the cam groove and is urged 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 and moves the slider 65 against the spring 73.
Y ₁ direction and slider 65 in Fig. 14A.
This is to restore the state to.

The cam groove 400 will be explained using FIG. 16A. The cam groove 400 is connected to the cam paths 405a, 40
5b, 405c, and 405d.
The cam groove diameter l ₁ is larger than l ₂ . Lever 1
The cam grooves 400 that drive the cam grooves 67 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 FIGS. 8 and 16, focusing on the operations of the cam 161 and the lever 162. Figure 14 shows
The 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. 16A. 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. 14B, and will not move further. This state is the state shown in FIG. 16B. The engagement pin 169 is biased by the coil spring 163 so as to come into contact with the abutment 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 first
This is the t ₁ state in FIG. 5 (hereinafter, the state will be indicated as a timing chart t _x in FIG. 15).

The micro switch 200 detects this state,
The disk clamping mechanism 90 clamps the disk 6 and starts pulling it out from the case 2, and the motor 165
is energized, and the cam 161 moves to A ₂ as shown in FIG.
15, the levers 167, 168 are pulled in the _B2 direction shown in FIG. 14B, the support 180 and the lifting mechanism 134 rise, and the turntable 13
The disk 6 is supported above 0 (t ₂ , t ₃ states).
This state is the state shown in FIG. 16C. At this time, since the cam groove diameter l ₂ is smaller than l ₁ , the lever 162 moves in the P ₂ 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. 16D is achieved. When the cam 161 rotates further from FIG. 16C, the interlocking member 40
4 is a cam path 405a as shown in FIG. 16D.
and 405c, lever 16
2 is biased to rotate in the _P1 direction by a spring 163,
In this state, the contact member 76 is separated from the engagement pin 169, and the engagement pin 169 is further rotatable in the _P1 direction as shown in FIG. 16D. 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 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 16
2 is the lever 168 again in the _P1 direction shown in FIG.
moves in _B1 direction. By moving the lever 162 in the _P1 direction, the slider 65 is moved to the state shown in FIG.
Release the state of engagement (t ₄ state). At the same time, the lever 168 moves in the _B1 direction shown in FIG. 14, and the support 180 descends ( _t4 state).
When the cam 161 further rotates, the lever 167 moves in the _B1 direction in FIG. 14, lowers the elevating mechanism 134, and places the disk 6 on the turntable 130 (state _t5 ). When the cam 161 further rotates, it enters the t ₆ state, and the position is detected by a rotary switch (not shown) and the motor 165 is de-energized, thereby stopping the cam 161 (t ₆ state). This state is shown in Figures 14A and 16.
In the state shown in Figure A, the cam 161 has rotated 360 degrees. The clamping operation at this time will be described later.

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 engagement state of the slider 65 is released and the case 2 is expanded as described above. It is almost fixed to the opening mechanism ( _t7 state). This is the situation shown in FIGS. 9 and 16B. The micro switch 200 detects this state, and the cam 16
The motor 165 is energized so that the motor 165 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 _B2 direction in FIG. The lever 168 is pulled and the support 180 rises to support the disk 6 (state _t9 ). Furthermore, cam 16
1 rotates, the lever 167 moves in the _B1 direction and lowers the elevating mechanism 134 ( _t10 state). After that, the disk holding mechanism 90 holds the disk 6.
is collected into case 2. During that operation, cam 1
61 rotates, lever 168 moves in direction _B1 ,
Support 180 falls (t ₁₁ state). When the cam 161 further rotates, the interlocking member 4
04 is the rear cam path 4 facing the branching member 403b
05b, the state shown in FIG.
It will be in the state shown in Figure A.

To briefly summarize each state in Fig. 15, t ₀ is the standby state, t ₁ is the cassette insertion state, t ₂ is the lift raised position, t ₃ is the support raised position, t ₃ is the slider movement start, and t ₄ is the slider log. (case departure),
t ₅ is the lift lowered position, t ₆ is the standby state, t ₇ is the case inserted, t 8 is the lift raised position, t ₉ is the support raised position, _{t 10 is} the lift lowered position, t ₁₁ is the support lowered position, t ₁₂ indicate the slider lock (case release).

The recording disk reproducing apparatus constructed as described above will be explained below, focusing on the operation of the clamping means according to the present invention.

17 to 22, FIGS. 23A and 23B, and FIGS. 24A to 24C are all schematic explanatory diagrams showing how the various parts of the reproducing apparatus are operated 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 disk 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 lowered position as shown in FIG. 23A.

Next, the case 2 passes through the insertion port 51 into the guide 5.
2 and 53 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 engagement hole 13 is opened by the engagement member 62. They are engaged and become substantially fixed to the playback device main body 50.

Next, the micro switch 200 shown in FIG. 6 detects this state, and the motor 114 operates to drive the belt 111, thereby moving the disk holding mechanism 90 forward in the figure (in the _X1 direction). Ru.
Then, case 2 is expanded as shown in Figure 18.
The disk holding mechanism 90 enters into the lid 3, the rotating member 101 comes into contact with the lid 3, the regulation of the sliding member 102 is released, and the sliding member 102 moves to the right (arrow Y ₂ direction).
As described above, the disc holding mechanism 90 enters the "lid/disk holding state". At the same time, the contact pin 29 came into contact with the convex part of the notch 290 of the lid 3
1 slides toward the rear of the disk holding mechanism 90. The abutting pin 291 that has entered the notch 290 of the lid 3 maintains its previous state. At this time, the contact portion 102a of the sliding member 102 contacts the micro switch 201, and the disk holding mechanism 90
is detected to be in the "lid/disk holding state" at this position. Then, the motor 114 rotates in reverse, and the disk holding mechanism 90 moves backward in the figure (X ₂ direction).
begins to be transferred to 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 moving the disk holding mechanism 90.

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, as shown in this figure, disk 6 is inserted halfway.
When the support 180 is pulled out, the support 180 rises as shown in FIG. 23B, and the groove guard 3 of the disk 6
Hold 3. At this time, the support 180 only touches the groove guard 33, so the disk 6
will not damage the signal surface.

Furthermore, the disk holding mechanism 90 is located at the rear (X ₂ direction).
20, the center boss 131 at the center of the turntable 130 and the center hole 34 of the disk 6 come to approximately correspond to each other. Even in this state, the support 180 holds the groove guard 33 of the disk 6.
It is configured as shown in the figure.

Next, the central mounting ring 133 is raised by the operation of the cam unit 160 and holds the central portion of the disk 6. FIG. 24A is a diagram explaining this state from the side. Next, as shown in FIG. 24B, the support 180 is lowered by the operation of the cam unit 160. Next, when the disk holding mechanism 90 is further moved backward (in the _X2 direction), the roller 103 provided on the sliding member 102 of the disk holding mechanism 90 and the slope of the contact member 43 come into contact with each other, and the sliding member 102 acts to the left ( _Y1 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. 24C.

At this time, the lid detection switch 295 corresponding to only the abutting pin 291 that protrudes toward the rear surface of the disk holding mechanism 90 (abutting the convex part of the notch 290 of the lid 3) among the abutting pins 291 is turned on. ing.
Figures 25 and 26 are partial cross-sectional views showing this state.
Shown in the figure.

25A shows the state of the contact pin 291 at the position of the concave part of the notch 290, and FIG. 25B shows the state of the contact pin 291 at the position of the convex part. Since the contact pin 291 protrudes, the 26th
The lid detection switch 295 is turned on only in the protruding portion as shown by B in the figure. Thereafter, when the mounting ring 133 is lowered by the operation of the cam unit 160, the disk 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 expansion mechanism 60 and the case 2, allowing the empty case 2 to 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, the lid 3 does not hang down and come into contact with, for example, the arm housing 120 while traveling.

When the playback is finished and the user inserts the empty case 2 into the playback device, the case expansion mechanism 6 opens.
The engagement member 62 of No. 0 engages with the case 2, and the case 2 becomes substantially fixed to the playback device main body 50. The micro switch 200 detects this state in the same manner as described above, and this time the cam unit 160
operates, the mounting ring 133 rises, and the 24th
It will be in the state shown in Figure C.

Next, the motor 114 drives the belt 111, and this time the disk holding mechanism 90 moves forward (arrow
_X1 direction) and transitions to the state shown in FIG. 24B. Next, the support 180 connects to the cam unit 1.
It rises due to the operation 60 and becomes the state shown in FIG. 24A. Thereafter, the mounting ring 133 is lowered by the operation of the cam unit 160, and the disk holding mechanism 9
0 is transported forward (in the _X1 direction) by a motor 114 and a belt 111 while holding the lid 3 and disk 6. In other words, from the state in Figure 20 to the first
This results in a transition to the state shown in Figure 9.

Furthermore, the disk holding mechanism 90 is located at the front ( _X1 direction).
When the roller 103 provided on the sliding member 102 and the slope 190a of the reversing lever 190 come into contact with each other. At this time, since the reversing lever 190 is restricted from rotating to _R1 , the roller 1
03 climbs the slope 190a, and the sliding member 102 moves to the left ( _Y1 direction), resulting in the above-mentioned "non-holding state".
As shown in FIG. 22, the lid 3 is pushed into the case 2 by the biasing force of the leaf spring 94.

Then, the motor 114 is reversed again, and the disk holding mechanism 90 is transferred rearward (in the _X2 direction) to return to the position shown in FIG. After this, the cam unit 160 operates again, and the engagement between the case 2 and the engagement member 62 of the case expansion mechanism 60 is released, the disk 6 is housed in the case 2, and the lid 3 is moved from the case 2. Case 2 is engaged with Case 2.
can be taken out from the playback device main body 50.

In this way, the user only needs to slightly insert the case 2 into the main body 50 of the playback device, and the disc 6
The disc 6 is automatically taken out of the case 2 to enable playback, and the disc 6 is 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. Also, since only the disk 6 and the lid 3 are pulled in without pulling the entire case 2 into the playback device main body 50, the playback device main body 50 is lower than when the entire case 2 is pulled in.
It has the advantage that it can be made thinner.

In particular, since the information detection mechanism of the lid 3 is divided into the clamping means and the detection part, it is possible to eliminate the need to run lead wires around.
Furthermore, by providing it in the transport direction, the main body can be made significantly thinner.

As described above, according to this embodiment, there is a case body having an opening at one end for storing a disc recording a signal, a case body having the opening, and a case body having the opening, which is removably engaged with the opening, and the disc is removably engaged with the opening. A recording disc playback device that uses a disc case comprising a lid having a plurality of uneven notches for transmitting recorded information, the disc case comprising a lid having a plurality of concave and convex notches for transmitting recorded information, wherein the engagement between the opening and the lid is released and the case a case engaging means for removably fixing the main body; a latching means for latching the lid;
A plurality of transmission members abut on the convex portion of the notch at the same time as the lid is latched;
a clamping means that clamps the disk at a position, releases the disc at a second position, which is approximately the center of the playback device, and waits at a third position; A transfer means for reciprocating the latching means, the transmission member, and the clamping means to the third position, and a transmission member that abuts the convex portion at the third position press to transmit information on the lid. By using a detection means that detects indirectly, information on the lid can be detected reliably, and this detection means can make the player thinner and reduce costs by eliminating lead wire routing. Become.

In the embodiment, the abutment pin 291 is always urged to return by the spring 293, but in order to reduce assembly man-hours, the return force of the lid detection switch 295 ( It is also possible to use a structure in which the abutting pins that do not come into contact with each other are returned to their original positions by spring force.

Effects of the Invention As described above, the present invention provides a clamping mechanism for transporting an actuator that comes into contact with the concave and convex portion of the disc that transmits recorded information, uses it as an indirect member, and connects it to the detection switches at the rear of the player. By bringing indirect members into contact, we have created an autoloading type recording disc playback device that can reliably detect information on the lid, make the playback device thinner, and reduce costs by eliminating lead wire routing. can be provided.

[Brief explanation of the drawing]

1A to 1C are perspective views of the mechanical appearance of a recording disk reproducing apparatus according to an embodiment of the present invention; FIGS. 2A to 2C are
Fig. 3 is a front view, plan view, and side view of the clamping means, Fig. 4 A and B are a plan view and a sectional view of the disk, and Figs. 5 and 6 are a cutaway exploded perspective view and an assembled disk case, respectively. Figure 7 is a perspective view of the external appearance of the device, Figures 8A and B are a plan view and cross-sectional view of the disk holding mechanism in the lid holding state, and Figures 9A and B are the disk holding mechanism not held. A plan view and a sectional view of the state; Figures 10A and 10B are operational illustrations showing the relationship between the sliding member of the disk holding mechanism and the clamp arm; Figures 11A to C are when the case expansion mechanism is not inserted; top view, sectional view and front view of the condition;
12A to 12C are a plan view, a sectional view, and a front view of the case expansion mechanism in the case insertion state, and FIGS. 13A to 12C are
C is an explanatory diagram of the operation of the case expansion mechanism, Fig. 14A,
B is an explanatory diagram of the operation of the cam unit, FIG. 15 is a time chart of the cam unit, FIGS. 16A to D are explanatory diagrams of the operation of the cam unit, and FIGS. 17 to 22 are views of the entire reproducing apparatus from above. The operation explanatory diagram, FIGS. 23A and 23B, is an operation explanatory diagram showing the relationship between the support and the disk, and FIG. 24
Figures A to C are explanatory diagrams of the operation shown in a longitudinal side view of the reproduction device, Figures 25A and B are sectional views showing the structure of the transmission member, and Figures 26A and B are the operation of the transmission member and the detection means coming into contact. FIG. 27 is an external view showing the mechanism of a conventional playback device. 3...Lid, 60...Case expansion mechanism, 90...
Disk holding mechanism, 291...Abutment pin (transmission member), 295...Lid detection switch (detection means).

Claims (1)

[Claims] 1. A case body having an opening at one end for storing a disc on which a signal is recorded, and a plurality of uneven cutouts that removably engage with the opening and transmit recorded information on the disc. A recording disc playback device using a disc case comprising a lid, the case engaging means for releasing the engagement between the opening and the lid and removably fixing the case body, and the lid. A latching means for latching, a plurality of transmission members that abut at the convex portion of the notch at the same time as the lid is latched, and a plurality of transmission members that clamp the disc at a first position, and the disc is placed in a playback device. a clamping means that is released at a second position approximately at the center of the interior and waits at a third position; and a latching means from the first position to the third position via the second position. and a transfer means for reciprocating the transmission member and the clamping means, and a detection means for indirectly detecting information about the lid by pushing out the transmission member that abuts the convex portion at the third position. Recording disc playback device.