JPS5850668A - Lifting device of recording disk - Google Patents

Abstract

PURPOSE:To obtain a titled lifting device of a player of a video disk, etc. for operating without any trouble even if a jacket containing a disk is loaded at any speed. CONSTITUTION:A slider 16 has a hole 61 at its center part through which a rotary shaft 60 of a turn table passes, and a bearing mechanism 62 of the shaft 60 is provided into the hole 61. A pair of L-shaped catches 64 and 64 are set in a body at the outer circumference edge part of a holder plate 63 of the slider 16. The fringe part of a lower ring 58 of a disk stage 13 can be fitted with a slight gap into a groove 65 which is formed by the plate 63 and an L-shaped edge of the catch 64. A pin 67 is provided at the side face of an edge part 66 of the slider 16, and an edge of a lifting lever 17 is fixed rotatably to the pin 67. This lever 17 is coupled to a lift driving mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording disk reproducing device such as a video disk player, and more particularly to a recording disk lifting device for placing a disk on a turntable.

In general, a recording disc playback device has a playback needle facing a recording disc placed on a turntable, and is configured to pick up and reproduce signals recorded on the disc. Recording disks on which video and audio signals are recorded (hereinafter referred to as video disks or simply disks) are recorded at high density, so if foreign matter such as stains or finger marks adheres to these disks, playback may occur. Noise may appear in the image. For this reason, various devices have been developed that allow discs to be placed on or removed from a turntable without touching them directly.

In such a playback device (hereinafter referred to as a player), the disc is stored in a jacket and the opening of the jacket is closed with a lid plate, and the disc is inserted into the player while the disc is stored in the jacket. Then, when the jacket is pulled out, only the disc and lid plate remain in the player, and after playback is complete, the empty jacket can be inserted into the player again and the disc and lid plate can be taken out with the disc and lid plate stored inside the jacket. The structure is as follows.

In the above, when a jacket containing a disc and a lid plate is inserted into a player, the lid plate and disc are locked in the player, and when an empty jacket is inserted after playback, the lid plate and disc are locked. In addition to the need for a means to release the lock (this is called a chucking device), when inserting this jacket, the disc can be ik! Make sure that the disc holder to be placed does not come into contact with the jacket, and after the disc and lid plate are chucked by the chucking device, take out the empty jacket from the player, and then raise the disc holder to a position where the disc can be placed and held. This requires an elevating device configured to lower the disc pedestal to place the disc on the turntable during playback, and to raise the disc pedestal to a predetermined position when playback is complete. The vertical movement of this elevating device operates in response to the insertion and removal of jackets (including empty jackets), so discs can be automatically removed from the jacket, and discs on the turntable surface can be automatically stored in the jacket. At least the periphery of the disc must be in the spatial position where the jacket moves.The disk holder mentioned above holds the disc in this position.This disc holder conventionally does not absorb gravity from itself. When the jacket is inserted, the lifting device descends at the speed of gravity acceleration and velocity.This means that when the jacket accommodates one end of the disk, the disk holder is It is desirable that the disc holder in this state be lowered quickly as it will no longer be needed.At this time, if the disc holder has not been lowered to the specified position, it may collide with the inserted jacket (
In reality, there is an opening means that moves while housing the jacket insertion end, so there is a risk that it will directly collide with this opening means.

For this reason, it was necessary for the lifting device to move more quickly than the insertion speed of the jacket by human operation. (9) The inconvenience of the jacket colliding with the disc holder can also occur if the disc holder does not fall down and stops due to dust or the like.

The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a recording disk elevating and lowering device in which the jacket can be inserted without any problem no matter what speed the jacket is inserted.

Fig. 1 shows the external appearance of a player equipped with a lifting device related to the BAK of the present invention.The player housing 1 is equipped with various operation buttons 2fc- for operating from the outside, and is equipped with a jacket insertion slot 3. There is. Jacket 4 is inserted from this insertion port 3.
The jacket 4 has a box shape as shown in FIG. 2, and a disk 6 is accommodated through the opening 5 of the jacket 4. Furthermore, to prevent the stored disc 6 from falling out of the opening 5, a lid plate CL1d pla is installed.
te) 7 to cover the opening 5.

A pair of slits 8.8 are formed inwardly from both sides of the lid plate T, locking portions 9.9 are formed on the outside of these slits 8, and the tips of these locking portions 9 form an inclined surface. A locking claw 10.1 protrudes from the outer surface of the locking part 9.
0 is set. Also, the mold 10 on the inner surface of the jacket 4
A locking portion 11 into which the claw 10 can fit is provided at a position corresponding to the position. These lock portion a locking claws 10. Locking part 11
etc. constitute the locking means. Therefore, when the disc 6 is stored in the jacket 4 together with the lid plate T, the claw 10 fits into the locking part 11, and the lid plate 7
will close the jacket opening 5. .

Next, the operation of the player 1 will be explained in sequence in relation to the insertion and removal of the jacket 4 with reference to FIGS. 3 to 10. In addition, Figures 3 to 10 show the outline and are for reference only.
It is drawn in a simplified manner.

First, FIG. 3 shows the jacket 4 before it is inserted into the player 1, and the turntable 12. Disc cradle 13. It is provided with a lifting device 14° and an opening means 15, and is further provided with a round lifting device (not shown) for lifting and lowering the disc holder 13.

In the figure, a slider 16 forming part of this elevating device,
One end of the elevating rail 17 is attached so that the movement of the slider 16 can be simplified by rounding it up and down. The disc holder 13 is placed on this slider 16 and is configured to move up and down in the center of the fixed turntable 12.

Needless to say, the turntable 12 is for placing the disk 6 on its upper surface, and the disk holder 13 is for supporting the disk 6 before it is placed on the turntable 12. . The chucking device 14 is for gripping the outer circumferential portion (non-recording portion) of the disk 6 inside the jacket 4 and the lid plate 7, and has two fingers 11ii and 19.
The tip of the lower finger 18 is pulled by a wire 21 such as a piano wire.

The opening means 15 serves to widen the opening 5 when the jacket 4 is inserted into the player to facilitate removal of the disc 6.・：In addition, the opening means 15 has a roller 20 at the bottom.
I would like to add that it has the following. This roller 20
The above-mentioned lifting lever 17 is operated by a lifting drive mechanism (path shown).
The opening means 15 acts directly through the opening means 15.
There are also nine types with the other end of the lifting lever 11 attached to the top.

Now, when the jacket 4 is inserted into the player 1 as shown in FIG. 4, it hits the opening means 15. Then, as it is pushed in, the opening 5 of the jacket 4 is expanded by the opening means 15 as shown in FIG.

If the jacket 4 is further inserted in this state, it will collide with the disc pedestal 13, so the disc pedestal 13 is lowered by the aforementioned elevating device as shown in FIG. 6.

When the jacket 4 is further inserted deeper, the outer periphery of the disk 6 and the lid plate T are gripped by the fingers 18 and 19 of the chucking device 140, as shown in FIG.

After this chucking, when the jacket 4 is pulled out, the disc 6 and the lid plate 7 are left behind in the player 1, and the disc holder is lifted up by the lifting device as shown in FIG.
3 rises. The timing of this rise is determined so that the jacket 4 rises after passing over this pedestal 13. The disk 6 is supported by a pedestal 13. Furthermore, after the jacket 4 has come out of the player 1, the tensile force of the wire 21 is loosened and the lower finger 18 of the chucking device 14 rotates as shown in FIG. 6 is placed on the turntable 12. Note that the lid plate 1 has a lower finger 18.
Even after rotating, it is supported upwardly by another means.

Thus, when the operation button 2 of the player is pressed, the turntable 12 rotates together with the disc holder 13, and a predetermined reproduction operation is performed.

Disc 6 and lid plate 1 after the playback operation is completed.
To pull out the disc holder 13 and lower finger 18 are raised to the state shown in FIG.

When the empty jacket 4t is inserted in this state, Fig.
The state sequentially shifts to the state shown in FIG. 7, and the chuck is released. The chucking device 14 is configured to release the chucking state when an empty jacket 4 is inserted.
If the jacket 4 is pulled out after being untied, the states shown in Fig. 6, Fig. 5, Fig. 4, and Fig. 3 will be sequentially transferred, and the disc 6 and lid plate 7 will be stored in the jacket 4 again and removed. be done.

Therefore, the disc 6 can be played without touching it directly, but the operator can play the disc 6 without touching it.
t- When the disk pedestal 13Fi and the slider 16 are placed on the slider 16 by their own weight, the opening means 15 is interlocked with the opening means 15 via the lifting lever 17 etc. according to the entering speed of the jacket 4. The slider 16 cannot follow the downward speed of the slider 16, and the disc holder 1 moves from the slider 16.
3 separates and the opening means 15 holding the entrance end of the jacket 4 collides within the time required for the opening means 15 holding the entrance end of the jacket 4 to fall to a lower distance of y cm/cm.
Ignoring the frictional resistance between the
Collision occurs when gl million.

Therefore, it is required to ensure that even if the jacket 4 is accidentally inserted, the disc holder 13 will descend with the slider 16 and will not come into contact with the slider 16 during playback.

A specific internal configuration that satisfies the above requirements and performs the operations shown in FIGS. 6 to 10 is shown in FIGS. 11 and below. 11th
1 is a schematic internal perspective view of the player shown in FIG. 1 to which the present invention is preferably installed.

Although the turntable 12 is drawn as a transparent body in FIG. 11 to make the structure easier to understand, it is not actually a transparent body.

In FIG. 11, the opening means 15Fi is located at a height aligned with the jacket insertion port 3 of the player 1, and operates as shown in FIGS. 3 to 10 by the two opening plates 15A and 15BK. opening 5 of jacket 4. The opening means 15 is not limited to the one shown in FIG. 11, but may also have a structure as shown in FIG. 9 of Japanese Patent Application No. 55-480380, which was previously filed by the applicant of this patent Since the structure of this opening means 15 is not the gist of the present invention, a detailed explanation will be omitted.

The chucking device 14 has two fingers 18 and 19, and the lower finger 18 is connected to the wire 2.
The main operation is the rotation by the pulling operation in step 1. This point will be explained later, but the mechanism around this point is explained in the previous Japanese Patent Application No. 180380/1983 or a patent of a separate invention. Since it is described in detail in Japanese Patent Application No. 56-063829, it is omitted here.

A pickup arm 22 is provided at a position higher than the turntable 12 and movable in the radial direction of the turntable 12. This pickup arm 2
2 has a cartridge 23 in which a reproducing needle (not shown) is housed, and when the disc 6 is placed on the turntable 12, the reproducing needle is brought into sliding contact with the disc 6. Let it pick up the signal.

The part indicated by the number 24 in the lower left part of FIG. 11 is an elevating drive mechanism for elevating the disk holder 13. ．． Opening means 15 and the like are attached. An example of this elevating drive mechanism 24 is shown in FIG.
This will be briefly explained using Figure 2.

The lift drive mechanism 24 includes a solenoid 2 having one end of a solenoid lever 25 attached to its movable end on the chassis.
6, which enables the solenoid lever 25 to rotate around the pivot [27]. Furthermore, solenoid lever 2
An intermediate gear 28'ft- is attached to the other end of 5 so that a worm pulley 29 always meshes with it. A belt 30 is connected to one end of the worm pulley 29 for transmitting power to the pulley 29.

Further, one end of the solenoid lever 25 is engaged with one end of a lock lever 33 by pressing a spring 32. A rotating shaft is provided at the center of the lock lever 33, and the pin 34 is inserted into the rotating shaft of the cam lever 35, and further into a hole in the one stop lever 36.

Shikuka is lock lever 33, cam lever 35. The stop lever 36 is rotatable about the bin 34 as a fulcrum. Furthermore, a cam portion 37 is formed at the other end of the lock lever 33, and the roller 20 of the opening means 15 is brought close to this cam portion. This roller 20 moves together with the movement of the opening means 15, and when the opening means 15 is located at the jacket insertion opening 3@ of the player 1, this roller 20 approaches the cam portion 37.

The cam lever 35 is bent into an L-shape as shown in the figure, and one end of the tension spring 38 is engaged with one end of the cam lever 35, and an approximately L-shaped window 39t-
A pin 40 is attached to the side surface of the tip of the other end, and this pin 40 is fixed to the other end of the lifting lever 17. Therefore, the lifting lever 17 is like this. Camreno (moves in the left and right directions in the figure by -350 rotations.

Further, one end of the stop lever 36 #1 is fan-shaped and serves to restrict the movement of the roller 20, and the other end contacts the jetty 41 of the cam lever 35 and rotatably engages with one end of the connecting plate 42. ing.

Further, there is a cam gear 43 adjacent to the intermediate gear 2B, and the other end of the connecting plate 42 is pivotally supported in a loosely fitted state at a position offset from the center of rotation of the cam gear 430. This cam gear 43 meshes with the intermediate gear 28 when the solenoid lever 25 rotates. Also,
The aforementioned chucking device 1 is located at the center of rotation of the cam gear 43.
The wire 21 that pulls the lower finger 18 of 14 is connected to the pulley 4.
It is multiplied by 4. Further, the back side of the cam gear 43 is integrally provided with a small-diameter disk portion 45, and a portion of the disk portion 45 is cut out to form a cam surface 46. A pair of microswitches 4 are arranged opposite to this disc part 45.
7.48 are arranged and these microswitches 47.4
8Fi The force surfaces 46 are turned on and off at opposing positions. This on/off operation is performed when the disk pedestal 13 is in the raised and lowered states.

Further, the other end of the tension spring 38 is attached to another eccentric position of the cam gear 43.

Further, a toggle lever 49 is attached to the lower part of the window 39 of the cam lever 35. This toggle lever 4
9 has a bent shape and is supported at its center to enable simultaneous movement. One end of the toggle lever 49 has two ears 50, 51, and a projection 52 on the top surface.
This protrusion 52 fits into the window 39 of the cam lever 35. Furthermore, one end of a torsion spring 53 is locked to the other end of the toggle lever 49, and the other end of this torsion spring 53 is locked to a raising piece 54.

In this way, the elevating drive mechanism 24 is configured.

Next, FIGS. 13 to 17 show an elevating device that shows how the disk holder 13 moves up and down with respect to the turntable 12. In the center of the turntable 12, there is a center spindle 55. There is this spindle 55
For example, there are multiple concentric circles around 0 (4 in this figure).
A hole 56... is provided.

The supplementary disc holder 13 has two rings 57 and 58 facing each other vertically, and the upper ring 57 is attached to the turntable 12.
The lower ring '58 is arranged on the upper surface side and the lower ring '58 is arranged on the back surface side, and both rings 57 and 58 are connected and fixed by a connecting rod 59.

This connecting rod 59Fi passes through the hole 56, and its diameter is made smaller than the inner diameter of the hole 56, so that it can move smoothly in the vertical direction within this hole 56. In this way, the disc pedestal 13 can be raised or lowered relative to the turntable surface. As the raising and lowering means, a slider 16 is provided on which the disk pedestal 13 is placed by its own weight. A hole 61 is provided in the center of the slider 16 through which the rotating shaft 60 of the turntable 12 passes, and a bearing mechanism 62 for the rotating shaft 60 is located in the hole 61. A pair of inverted-shaped engaging claws 64 and 64 are integrally provided at the outer peripheral end of the receiving plate 63 of the slider 16 having this hole 61.
The peripheral edge of the lower ring 58 of the disk holder 13 can be fitted into the fitting groove 65 formed with one end of the L-shape with a slight gap. Therefore, as the disk holder 13 #'i slider 16 rises, the peripheral edge portion sneaks into the fitting groove 65 of the mating pawl 64 while sliding on the receiving plate. Thereby, the disk pedestal 13 in the raised state is engaged with the slider 16, and the disk pedestal 13 instantly follows the movement of the slider 16.

Further, one end 66 of the slider 16 has a pin 61 on its side surface, to which one end of the lifting lever 17 is rotatably fixed. This lifting lever 17 is connected to the lifting drive mechanism 24 mentioned above, and is indicated by the arrow A in FIG.
It is moved in direction B. Along with this movement, the slider 16 also moves in the same direction, but a cam plate 68 is integrally provided on the lower surface of the slider 16, and an inclined groove 69 is formed in this cam plate 68. This inclined groove 6
A guide bin 70 is loosely fitted into the hole 9. Therefore, when the slider 16 moves in the directions of the arrows A and B, the slider 16 moves up or down along the inclined groove 69. This rising and falling state is shown in Figures 14 to 17.
Shown in the figure.

14 and 35 show the raised state, and FIGS. 16 and 17 show the lowered state. Immediately) When the lifting lever 17 moves in the direction of arrow A, it moves to the left and in the upward direction, and when it moves in the direction of arrow B, it moves to the right and in the downward direction.

Note that the guide bin 70 is attached to the bottom chassis 71 in FIG.
The main chassis T2 is located above the lower chassis 71. In FIGS. 14 and 16, the position of the guide bin 10 is only indicated by a black circle. Further, the hole 61 (FIG. 16) of the slider 16 is formed into an oblong hole so that the movement of the slider 16 in directions A and B is not hindered.

In this way, by raising and lowering the slider 16, the disk holder 1
3 rises and falls.

The elevating device is constructed as described above, and its operation will be explained with reference to the elevating drive mechanism 24'ft mentioned above.

First, when the player is not turned on, open means 1
Since the roller 20 of No. 5 hits one end of the stop lever 36, the opening means 15 cannot move toward the back of the player.
Insertion of the jacket 4 is prevented when the power is not turned on.

) In addition, the lower ring 58 of the disk holder 13 is located toward one end 66 of the receiving plate 63, as shown in FIGS. 16 and 17.

Next, when the power is turned on, power is also supplied to the solenoid 26, the movable end is absorbed, the solenoid lever 25 rotates around the shaft support 2γ, and the intermediate gear 28 meshes with the cam gear 43. At this time, the lock lever 33 also attempts to rotate due to the spring 32, but does not rotate because the cam portion 37 hits the roller 20. When the rotating shaft sne of the motor is energized in this state, the worm pulley 29 rotates through the bell 30, and the cam gear 43 rotates through the intermediate gear 28. Due to this rotation, the connection &T 42 moves in the direction of arrow C, and the stop lever 36 also moves in the direction of arrow D with the bin 34 as a fulcrum.
move to.

Also, one end of the cam lever 35 is pulled by the tension spring 38, and the jetty 41 is pulled by the stop saw 38.
Along with the zero rotation, the cam lever 35 also rotates (arrow E).
direction K). - The tension spring 38 is bent and pulled by the rotation of the cam gear 43.

The rotation of the cam lever 35 causes the lifting lever 17 to be pulled in the direction of arrow A in the figure, and the slider 16 moves a distance L1.
move only. This movement causes the disk holder 13 to rise as explained in FIG. 14.

That is, at this time, the lower ring 58 of the disk holder 13 slides on the receiving plate 63 as the slider 16 rises, and its peripheral portion fits into the fitting groove 65 and engages with the engaging pawl 64. When the disk pedestal 13 has risen to a certain extent,
When the chucking device 14 operates (the lower finger 18 closes), the cam surface 46 of the 1-cam gear 43 comes to the position of the switch 48, and the switch 48 is activated to stop the rotation of the motor. In this state, the jacket 4 can be inserted.

Jacket 4tl - When inserted, roller 20 will be at stroke 7
7'L/bar 3 (cam lever 3 without being restrained by i)
It slides into contact with the curved surface part 5. At this time, lock lever::
Lock the engagement position. Further, the roller 2゛ pushes the curved surface part of the cam lever 56 clockwise against the force of the tension i 38, moves the lifting lever 17't-B direction, and the disk holder 13 reaches the top dead center. (Figure 6). Also, low? -20Fi) Guru Lever 4
9 in the moving direction to rotate the toggle lever 49 so that the window 39 and the bottle 40 come into contact with each other. °This locks the cam lever 35. When the disk pedestal 13 is lowered, the lower ring 58 is not hooked by the engaging pawl 64, but slides down on the receiving plate 63, and is released from the engaging pawl 64 when at a certain position. Furthermore, when the jacket 4 is inserted, the chuck device 14 is activated and the lid plate 7 is chucked by both fingers 18 and 19 (FIG. 7). After this chucking, when the jacket 4 is pulled out, the roller 20
pushes the lug 50 of the toggle lever 49 counterclockwise to restore it. At this ninth stage, the lifting lever 17t is moved in the inward direction again, and the disk holder 13 is raised. This is the situation.

When the jacket 4 is completely pulled out, the disc 6 will be
It is supported by the chucking device 14 and the disk pedestal 13 (FIG. 9). Next, when the motor is rotated in the reverse direction, the cam gear 43 rotates in the reverse direction and the chucking is released.
3 descends and places the disk 6 on the tar/table 12. This state is shown in FIG. At this stage, switch 47 stops the motor via cam surface 46. Thus, player 1 becomes able to play. That is, the turntable 12 and the disc pedestal 13 can rotate together.

After the reproduction is finished, the motor is rotated again to obtain the state shown in FIG. 9. In this state, when an empty jacket 4 is inserted, the disc holder 13 is lowered while the disc 6 is stored.

At any time, the disc holder 13 descends 4 as the lower ring 58 is pulled by the engaging claw 64, so that it does not hit the jacket 4. After that, the chuck is released and the disc 6 can be taken out.

According to this operation, the disc holder 13 is
Measures are taken to ensure that it will always be forcibly lowered when it is inserted. Therefore, when the jacket 4 suddenly becomes too large, the movement of the opening means 15 is linked to the lift drive mechanism 24 and the slider 16 without any time delay, so that the disk holder can be moved regardless of the moving speed of the opening means 15. 13 can be raised and lowered, and collision between the opening means 15 and the disk holder 13 can be avoided. The engaging pawl 64, which performs such a main operation, may be provided at a position where it covers the lower ring 50 of the disk holder 13 only slightly when it is in the raised state, or it may be placed in such a position that it covers the lower ring 50 of the disk holder 13 only slightly when it is in the lowered state. It may be separated while being hung on the lower ring 58. This configuration is adopted when the diameter of the disk holder 13 is larger than that of the receiving plate 63. Further, the selection of the engagement position is determined by selecting the amount of lateral movement of the disk holder 13.

Furthermore, if the slider 16 is configured to move only in the vertical direction and not in the lateral direction, the lower ring 58t - the position where the engaging claw 64 engages - can be adjusted as long as the disc holder 13 is rotatable. There are no restrictions anywhere. 18th
The figure shows the lower ring 58 and slider 1 based on this idea.
Another embodiment is shown in which a permanent magnet 73 is interposed between the receiving plate 63 of No. 6 and the receiving plate 63 of No. 6. The configuration in this figure has a pair of supports 74, 74,
A rotating body 77 separated from the link plate 75 at both ends and connected to a driven plate 76t is rotatably supported at the connecting portion, and each tip 78 of the driven plate 16 is attached to the receiving plate 63 of the slider 16 in a swinging state. This is how it was done. Link board T5
is bent at four predetermined angles, and one end is connected to the lifting lever 17.
Fixed. A long hole 79 is formed in each tip 78 of the driven plate 76, into which a central fulcrum Q projecting pin 80 of the receiving plate 463 is loosely inserted. Furthermore, a guide plate 82 having a through hole through which a guide rod 81 (not shown) that is erected from the lower chassis is inserted is extended at the center fulcrum of the receiving plate 63, and the receiving plate 63 can be moved along the guide rod 81. It is said that Additionally, slider 16tj: upper ring 5 of disk holder 13
Lower ring 5 where T is stopped by turntable 12
The magnet 13 on the receiving plate 63 may be magnetized when the lower surface of the magnet 8 is lowered to a point where the magnet 13 on the receiving plate 63 is separated by a predetermined distance.

In such a configuration, the direction of the movement of the lifting/lowering lever 17 is changed by the link plate T5, and the fulcrum is caused to move along the entire arc of the driven plate 76 along the control center. For this rotation, each tip 78 of the driven plate 76 moves the receiving plate 63 by loosely inserting the projecting pin 80 into the elongated hole 79, and
The fulcrum guide plate 82t of the receiving plate 63 and the guide rod 81 are in sliding contact. Consequently, the receiving plate 63 moves along the guide rod 81.

When the L1 lifting lever 17 is pulled in the A direction by the lifting drive mechanism 24, the receiving plate 63, that is, the slider 16 rises, and when pulled in the B direction, it falls. The disk pedestal 13 moves up and down as the disc holder 13 moves up and down.

By the way, in order to lower the disc pedestal 13t in the raised position, insert the jacket 4tl into the player 1 while it is energized, make it movable in the previous stage, bring the friend roller 20 into sliding contact with the cam lever 35, and lower the lifting lever 11. It was intended to push in direction B. At this time, when the jacket 4 is inserted to a certain extent, the disk holder 13 vertically descends as the slider 16 descends at a speed higher than the falling speed due to its own weight. This effect is achieved by constructing the lower ring 58t of the disk pedestal 13 with a magnetic material.
8 while the magnet 13 on the receiving plate 63 is attracted, pull it down, and only the disc holder 13 will stop at the position where the upper ring 57 hangs on the turntable 12. However, the slider 16 will descend further from this point. , lower ring 58 and magnet 73
The suction force is lowered to a level where the rotation of the turntable 12 is not hindered.

The slider 16 has a disc pedestal 13 whose own weight is W kilograms.
The minimum adsorption force F required to adsorb and pull down the jacket 4 may be set so as to satisfy the following equation with respect to the entrance speed V of the jacket 4.

V < x (g (1+F/W)/2y) 3A The approach speed V that satisfies the above equation is the speed at which the opening means 15 reaches the disk holder 13 within the time it moves X meters from the time it comes to the front of the disk holder 13. The upper end of the pedestal 13 is lowered by a required descending amount of 1 meter, and the opening means 15 and the disk pedestal 13 come into contact with each other.
Collisions can be avoided. The same is true when inserting the jacket (4t) to store the disk 6. In this case, both ends of the disk 6 are connected to the opening means 15.
The disk 6 is supported by the chucking device 14 and the chucking device 14.
There is no risk of the unit tilting.

This is how the invention works.

In addition, in the first embodiment, there are 64 hooking claws, 1 line, and 1 frame-shaped receiving plate 6.
3, however, it may be provided inside the receiving plate 63 only if the vertical movement of the disk pedestal 13 is only in the vertical direction.

As described above, according to the present invention, the slider that raises and lowers the disc cradle that holds the disc in the moving space position of the jacket drives the disc cradle downward when lowering. Therefore, when inserting the jacket, there is an effect that the opening means for transferring the jacket (1) does not collide with the disc holder on which the disc is placed. It also solved the problem of the disc holder getting stuck on the turntable and not letting go.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of a recording disk reproducing device using the present invention, Fig. 2 is a perspective view showing the jacket, disc, and lid playback device, and Figs. 11 is a perspective view showing the internal structure of the device shown in FIG. 1; FIG. 12 is a perspective view showing the lifting drive mechanism that drives the device of the present invention;
Figure 3 is an exploded perspective view of the lifting device according to the present invention;
4 is a side view of the lifting device in the raised position, FIG. 15 is a perspective view of FIG. 14, FIG. 16 is a side view of the lifting device in the lowered position, and FIG. 17 is a perspective view of FIG. FIG. 18 is a perspective view showing another embodiment of the device of the present invention. 1... Player 4... Jacket 6...
Disc 12... Turntable 13...
Disc pedestal 14...Chucking device 15...
・Opening means 16...slider 17...J
I lever 24... Lifting drive mechanism 55...
Center spindle 56...hole 57...upper ring 58...
・Lower ring 59... Connecting rod 60... Rotating shaft 62... Bearing mechanism 63... Back plate
64... Engaging claw 65... Fitting groove 67
...Bin □68...Cam plate 69...
Inclined groove 70... Guide pin 71.72-... Shear 773... Magnet 74... Support column 77
... Rotating plate Fig. 13 Fig. 12 Fig. 14 Fig. 7 Fig. 15 Fig. 16 Fig. 17 Fig. 8 Fig. 18 548

Claims (1)

[Scope of Claims] (1) A recording disk on which signals are recorded is stored in a jacket, and this jacket is inserted into the device, and the recording disk is automatically taken out from the jacket and fixed so as to be rotatable. In a playback device that plays back recorded signals by placing this recording disk on a turntable, it is movable to a raised position and a lowered position with respect to the turntable surface, and in the raised position, the recording disk is placed on the turntable. a pedestal that can be held at a position higher than the surface of the turntable and that allows the recording disc to be placed on the turntable in the lowered position; a slider that can be driven downward and lowered and raised; the slider is raised when the jacket is removed;
The lowering is performed when the jacket is inserted, and the slider is lowered when the outer periphery of the recording disk is supported, and when the support is released, the slider is lowered completely. Features a recording disk lifting device. (2) The slider is in the raised position and engages with the lower pedestal under the turntable of the pedestal, and in the lowered position, the distance from the lower pedestal is set such that the pedestal can rotate. The recording disk lifting device according to claim 1, further comprising an engaging pawl for holding the recording disk. (8) The slider has a suction means on its upper surface that attracts the pedestal when it is in the raised position and separates from the lower pedestal of the pedestal when it is in the lowered position. The recording disk lifting device described in Section 1.