JP2572834B2 - Disc player clamping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a disc player which enables continuous reproduction of both sides of a laminated information recording disc such as a video disc without inverting the disc. It relates to improvement of a clamping device.

[Conventional technology]

2. Description of the Related Art Conventionally, a disc player for continuously reproducing an information recording disc such as a video disc without inverting the disc is driven alternately by two pickups after holding a disc on a tray by a turntable and a clamper and raising the disc. The pickup was inverted from one side of the disk to the other side for reproduction.

[Problems to be Solved by the Invention] By the way, the information recording disk such as the video disc is 2
Since two disks are bonded together, a hole for positioning and holding by the turntable and the clamper may be displaced between the two disks.

On the other hand, when the disc is held between the turntable and the clamper, first raise the turntable,
After the positioning of the disc with respect to the turntable, the clamper is moved to the turntable side and clamped, so that the disc is clamped with reference to the turntable side.

Therefore, if the holes of the two bonded disks are misaligned, the disk surface on the turntable side can be normally reproduced without eccentricity, but the disk clamper side is eccentric with respect to the clamper. However, there is a problem that it is difficult to perform tracking and cannot be normally reproduced.

[Object of the invention]

An object of the present invention is to solve the above-described problem. An object of the present invention is to clamp a disc by a turntable and a clamper on the basis of the turntable and the clamper for each reproduction surface. Therefore, it is an object of the present invention to provide a disk player clamping device that does not cause eccentricity between the turntable and the clamper when reproducing any surface of the disk, and that can perform good reproduction.

[Summary of the Invention]

The present invention is intended to achieve the above-mentioned object, and the gist of the invention is that when reproducing the disk surface on the turntable side, the disk is clamped on the basis of the turntable side, and the disk surface on the clamper side is held. In the case of reproduction, the disc is sandwiched on the basis of the clamper side.

(Example of the invention)

FIG. 1 is an overall front view and FIG. 2 is a plan view of the above embodiment of the present invention.

In the figure, reference numeral 1 denotes a case to which a front openable door 1a is attached, and 2 denotes a timing pulley 2a attached to two right and left portions of a top plate portion 1b of the case 1 and two right and left portions of a bottom plate portion 1c. The timing belt is wound around the timing pulley 2b, and the timing pulley 2b is connected by a single shaft 2c. The shaft 2c is rotated by a motor (not shown), so that the pair of timing belts 2 Moved synchronously.

3 is the left and right 2 of the top plate 1b and the bottom plate 1c of the case 1, respectively.
A weight 4 is fixed to one end of each of the wires 3 for balancing with a moving base 6 to be described later as an endless wire wound between pulleys 3a attached to the locations. The weight 4 is guided by a guide rail 5 fixed to the case 1, and when the wire 3 moves, the weight 4 is guided by the guide rail 5 and moves.

Reference numeral 6 denotes a moving base to which both ends are guided by guide rails 7 provided in parallel with the guide rails 5 and to which the pair of timing belts 2 and the wires 3 to which the weights 4 are not attached are attached. The guide rail 7 is guided on the guide rail 7 as shown in FIGS. 2 and 3. That is, four guide rollers 6a protruding so as to sandwich the front and rear surfaces of the guide rail 7 and guide rollers 6b abutting on the side surfaces of the guide rail 7 are attached to both ends of the movable base 6. The one guide roller 6b (the left side in FIG. 2) is spring-biased by a spring 6c.
Does not move back and forth. In addition,
Protrusions 6d protruding from both end surfaces of the moving base 6 are for attaching the wires 3, and have recesses at the front surfaces at both ends.
6e is for fixing the timing belt 2.

Next, an operation for vertically moving the movable base 6 based on the above-described configuration will be described.

When a motor (not shown) rotates, the shaft 2c rotates, so that the timing belt 2 moves and the movable base 6 is guided by the guide rails 7 and moves up and down according to the rotation direction of the motor. At this time, since the wire 3 to which the weight 4 is fixed is attached to the moving base 6 and is balanced with the moving base 6, the moving base 6 can be moved up and down even if the rotational force of the motor is not so large. Is performed smoothly.

Reference numerals 8 and 8 'denote a pair of right and left rails for guiding one tray 9, which will be described in detail later. The angle connecting the center lines of the respective tray guides to the left and right of the middle part on the back side of the case 1 is approximately 60 degrees. Each stage is arranged so that And
On the opposing surfaces of the rails in the respective tray guides 8, 8 ', grooves are formed in which the side surfaces of the tray 9 are removably inserted.

Reference numeral 10 denotes a tray transfer means disposed on the upper surface of the moving base 6, which pulls out the tray 9 guided by the tray guides 8, 8 'and discs disposed above and below the case 1 which will be described in detail later. The tray containing the disc D, which has been transferred to one of the players 11 and 11 'and the reproduction of which has been completed by the disc players 11 and 11', is set in a predetermined tray guide.
Transfer to 8,8 '.

Next, the details of the tray 9 will be described with reference to FIG.
The tray 9 is formed, for example, in a size in which a disc D of 30 cm is placed, and is formed of a steel plate in order to obtain rigidity, and is punched by leaving a plurality of bars to reduce the weight. Is formed. Protective portions 9c and 9d made of synthetic resin are integrally formed at desired portions of the center bar 9a and the outer peripheral portion 9b so that the disk D does not directly contact the steel plate and is not damaged. In addition, a rising piece is formed on the protection portion 9d of the outer peripheral portion 9b to guide the disk D.

A protruding piece 9e to be inserted into the tray guides 8, 8 'is formed at an opposing portion of the outer peripheral portion 9b of the tray 9 and a projection 8a formed on the tray guides 8, 8'. An elastic engagement piece 9f to be combined is integrally formed, and further,
A hook 9g that engages with a hook arm 10k of the tray transfer means 10 described later is formed on the protection portion 9d of the outer peripheral portion 9b.

Next, details of a device for pulling out the tray 9 from the tray guide 8 or 8 'and loading it into the disc player 11 or 11', or pulling out the tray 9 from the disc player 11 or 11 'and returning it to the tray guide 8 or 8' will be described in detail. 2
This will be described with reference to FIGS. 3, 3, and 5 to 14.

On the lower surface of the moving base 6, two gears 6f, 6f 'having rotating arms 6g, 6g' fixed to the lower surface are pivotally supported, and the respective gears 6f, 6f 'correspond to the two-stage gear 6h. It is meshed with a small gear. A worm gear rotated by a large gear of the two-stage gear 6h and a motor 6i mounted on the lower surface of the moving base 6.
It is meshed with 6j. Therefore, when the motor 6i rotates, 2
The two gears 6f, 6f 'are rotated in the same direction via the worm gear 6j and the two-stage gear 6h.

A ring-shaped recess 6k is formed on the upper surface of the moving base 6, and a pair of protrusions are arranged so as to sandwich the ring-shaped recess 6k.
6l and 6l 'are formed.

Reference numeral 12 denotes a rotating disk integrated with two disks shifted from each other. On each surface side, a ring-shaped recess 6k of the moving base 6 and a ring formed on the back surface of a rotating plate 13 described later. Ring-shaped recesses 12a and 12b are formed so as to fit into the recess 13a. The back side ring-shaped recess 12a of the rotating disk 12 is fitted into the ring-shaped recess 6k of the moving base 6, and the shaft 14a is inserted into the center hole 6m from the back of the moving base 6. The shaft 14a of the moving member 14 is rotatably mounted on the upper surface of the moving base 6 by screws 14b.

Reference numeral 13 denotes a rotating plate having a ring-shaped recess 13a formed on the back surface, and the upper surface ring-shaped recess 12b of the rotating disk 12 is fitted into the ring-shaped recess 13a and inserted from the upper surface of the rotating plate 13. Screw 13b. Guide grooves 13c, 13c 'for selectively inserting and guiding the protrusions 6l, 6l' of the moving base 6 are formed on both left and right sides of the rear surface of the rotating plate 13, and a pair of guide grooves parallel to the upper surface are formed. Guide bar 13d is formed.

In addition, 12c is a retainer inserted between the ring-shaped concave portions 12a and 16k and between the ring-shaped concave portions 12b and 13a, and 12d is inserted into a hole formed in the retainer 12c. It is a ball.

14 in the rotating member to the shaft portion 14a is screwed to the rotary disc 12, the above-mentioned rotating arm 6 g, 'roller 6 g ₁ provided at the tip of, 6 g _1' 6 g is selectively inserted guide The forked guide grooves 14c and 14c 'are formed except for a cutout 14d formed near the shaft portion 14a. Further, the flange portion 14e is formed over substantially 180 degrees in the outer periphery of the shaft portion 14a, 3 pieces of switches S ₁ to S ₃ are arranged at substantially 90 degree intervals for turning on the contacts the the collar portion 14e ing.

Reference numeral 15 denotes a back-and-forth moving plate which is guided by the guide bar 13d of the rotating plate 13 and moves back and forth. That is, the tray transfer means 10 includes a motor 10a mounted on the above-mentioned front and rear moving plate 15, a worm 10b having two thread grooves rotated by the motor 10a, and a pair of gears 10c meshing on both sides of the worm 10b. And a pulley portion formed on each gear 10c and two pulleys 1
A pair of large pulleys 10f connected by a belt 10e via 0d, a rotating arm 10g integrally attached to the large pulley 10f, and one end pivotally supported by the longitudinal plate 15 and formed in the longitudinal direction. The roller 10 of the rotating arm 10g is inserted into the elongated hole 10h '.
g 'is inserted into each of the pair of control arms 10h, one end of which is integrally rotated with one of the control arms 10h on the back surface of the front and rear moving plate 15, and the other end is formed on the rotating plate 13. The moving arm 10i engaged with the projection 13e,
The movable body 1 is guided by guide bars 15a formed two by two on the left and right sides, and the tip of the control arm 10h is engaged.
0j, a hook arm 10k and a return arm 10l rotatably supported on a pin 10j 'implanted in the moving body 10j.
A winding spring 10m for urging the hook arm 10k and the return arm 10l clockwise on the left side and counterclockwise on the right side, and a spring 10n slidably supported on the moving body 10j. ′ And a shaft 10n that is spring-biased in the forward direction of the moving body 10j. Then, the protrusion 1 formed on the upper surface of the hook arm 10k described above.
0k 'is a projection 1 formed on the lower surface of the return arm 10l.
0l 'and the return arm 10
The projection 10l "formed on the lower surface of the shaft l engages with the rear end of the shaft 10n.
In FIG. 7, the rotation force of the winding spring 10m is restricted to the state shown in FIG.
The rotation force of the winding spring 10m is also restricted to the state shown in FIG. 7 by the projection 10k 'of the hook arm 10k being in contact with the projection 10l' of the return arm 10l. The movable body 10j has a release pin 10o which comes into contact with the elastic engagement piece 9f of the tray 9 engaged with the projection 8a of the tray guides 8, 8 'to release the engagement, from the shaft rod 10n. It is provided to protrude forward.

Further, a guide groove 15b for guiding the tray 9 is formed on both sides of the front and rear moving plate 15, and the tray 9 is formed on the front upper surface of the guide groove 15b with tray guides 8, 8 'formed on the case 1. At the time of returning, a regulating piece 15c is formed so as to freely rotate in the rearward direction engaging with the return arm 10l and not rotate in the forward direction.

Next, an operation for transferring the tray 9 based on the above-described configuration will be described.

First, the state of each member before starting is as shown in FIG. That is, the rotating arm 6 g, 'roller 6 g _1, 6 g _1' 6 g guide grooves 1 of the rotating member 14 in the center position
4c, 14c ', and projections 6l, 6l' formed on the moving base 6 are guide grooves 13c, 1 formed on the lower surface of the rotating plate 13.
Inserted at 3c '. At this time, the switch S ₂ is
Turned on by 14e.

In this state, the motor 6i is energized and the gears 6f, 6f '
Is rotated clockwise as shown in FIG. 6, the rotating arm 6g remains inserted in the guide groove 14c of the rotating member 14, and the other rotating arm 16f 'is moved into the guide groove 16c' of the rotating member.
, The turning member 14 is turned clockwise by the turning arm 6g. On the other hand, the protrusion 6l remains inserted in the guide groove 13c, and the other protrusion 6l '
Leave from 13c '.

Therefore, the rotating plate 13 is rotated counterclockwise with respect to the movable base 6 via the rotating disk 12 with the engaging portion between the projection 61 and the guide groove 13c as a fulcrum. When the switch S ₂ rotating member 14 is rotated approximately 90 degrees is turned on by the flange portion 14e, the rotation of the rotating plate 13 is cut off energization to the motor 6i is stopped at the position shown in Figure 6.

When the motor 6i is rotated in the opposite direction to that described above, the gears 6f, 6f 'rotate in the opposite direction to that in FIG. 6, and therefore, the rotating member 14 is rotated in the counterclockwise direction to form the projection 6l'. The rotating plate 13 is rotated clockwise about the engaging portion with the guide groove 13c '.

When the rotating plate 13 is rotated counterclockwise or clockwise in this way, the rotating plate 13 faces the tray 9 inserted into the tray guides 8, 8 'of the case 1.

When the switch S ₃ as described above is rotated plate 13 turned on is stopped, worm 1 of Article 2 is performed energized motor 10a
0b is rotated. When the worm 10b is rotated, the pair of gears 10c is rotated, and the large pulley 10f is rotated in a direction indicated by an arrow in FIG. 7 via a belt 10e wound around a pulley formed on the pair of gears 10c. Here, the two worms 10b are used because a pair of gears 1 meshed with the worm 10b is used.
This is for rotating 0c in synchronization. When each large pulley 10f is rotated, the rotating arm 10g fixed to each is rotated in the same direction as the large pulley 10f, so that the pair of control arm 10h and the moving arm 10i are rotated.
Here, when the moving arm 10i is rotated counterclockwise,
Since the tip of the moving arm 10i is engaged with the projection 13e of the rotating plate 13, the front and rear moving plate 15 is guided forward by the guide bar 13d and is guided by the tray guide 8 or 8 'of the case 1. Approaching the tray 9.

On the other hand, when each of the pair of control arms 10h is rotated in the same direction as the rotation arm 10g, the moving body 10j engaged with the tip of the control arm 10h is guided by the guide bar 15a and moves forward. Then, the moving body 10j moves forward, and the release pin 10o comes into contact with the elastic engagement piece 9f of the tray 9 immediately before the end of the movement to release the engagement with the projection 8a of the tray guide 8 or 8 '. The shaft rod 10n comes into contact with the protruding piece 9e of the tray 9 and retreats against the spring force of the spring 10n 'to rotate the return arm 10l against the winding spring 10m. After being once contacted with the hook 9g and rotated against the spring force of the winding spring 10m, it is engaged with the hook 9g (9th
Figure).

When a switch (not shown) detects the end of the forward movement, the motor 10a is once stopped and then reversely rotated. Due to this reverse rotation, the front and rear moving plate 15 retreats by the operation reverse to the above, and the moving body 10j also retreats. When the moving body 10j is retracted, the hook arm 10k is engaged with the hook 9g of the tray 9 and the release pin 10o contacts the elastic engaging piece 9f of the tray 9 to move the tray guide 8 or 8 '. Since the engagement with the projection 8a is released, the tray 9 is pulled out from the tray guide 8 or 8 'with the retreat of the moving body 10j, and the guide groove 15b of the front-rear moving plate 15 is drawn.
The front and rear moving plate 15 and the moving body 10j return to the initial positions while being pulled into the robot (FIGS. 10 and 12).

In the returning operation of the moving body 10j, the return arm 10l is moved by the restricting piece 15c on the guide groove 15b of the front and rear moving plate 15.
However, since the regulating piece 15c pivots freely in the rearward direction, the return arm 10l passes while rotating the regulating piece 15c.

In this way, when the front and rear moving plate 15 and the moving body 10j return to their initial positions, a switch (not shown) operates to
on stopping the rotation of a, return the rotating plate 13 by energizing the motor 6i to the position of the neutral shown in Figure 6 by the reverse operation to the above, when the switch S ₂ is turned on, to the motor 6i And shut off the current.

Thus, when the switch S ₂ is turned on, again the motor
10a is energized, the front and rear moving plate 15 moves forward, and the moving body 10j
Also move forward. As the moving body 10j advances, the tray 9 is moved from the guide groove 15b to the disc player 11 or 1 described later.
Is inserted into the guide grooves formed 111k ₃ to 1 'with the tray 9 is advanced. Then, near the end of the forward movement of the moving body 10j, the return arm 10l abuts on the restricting piece 15c, but since the restricting piece 15c cannot rotate in the forward direction, the return arm 10l is subjected to the spring force of the winding spring 10m. It is turned against. When the return arm 10l is rotated, the projection 10 of the return arm 10l
Since the projection 10k 'of the hook arm 10k engaged with l' is pulled, the hook arm 10k is also rotated in the same direction as the return arm 10l against the spring force of the winding spring 10m. The engagement between 10k and the hook 9g of the tray 9 is released. When the engagement between the hook arm 10k and the hook 9g is released, the tray 9 is moved to the disk player 1 or 1 by the shaft 10n spring-biased by the spring 10n '.
When the front and rear moving plate 15 and the moving body 10j move to the end while the guide groove 111k ₃ of 1 'is pushed to the end, the power supply to the motor 10a is cut off and the movement stops as described above (FIG. 11). , FIG. 13).

When the movement stops, the motor 10a starts reverse rotation, so that the front and rear moving plate 15 and the transfer body 10j start retreating. Because away from the resilient locking piece 9f by releasing pin 10o by retraction of the transfer member 10j, the elastic locking pieces 9f is engaged with the hook 111k ₄ formed in the guide groove 111k ₃ of the disc player 11 or 11 ' With the shaft 10n, the spring 10
The tray 9 is kept pressed by the spring force of n '. Therefore,
The tray 9 is set on the disc player 11 or 11 '.

When the reproduction by the disc player 11 or 11 'is completed, the tray 9 is returned to the tray transfer means 10 by the same operation as the above-mentioned operation of taking out from the guide rail 8 or 8' of the case 1, and the tray transfer means 10 The tray 9 returned to the disk player 11 or 1
It is returned to the guide rail 8 or 8 'by the same operation as the transfer to 1'.

FIG. 14 is a plan view showing the transfer state of the tray 9.

Next, the configuration of the disk player 11 or 11 'disposed above and below the case 1 will be described with reference to FIGS. Since the disc players 11 and 11 'have the same configuration, only the upper disc player 11 will be described.

The disc player 11 has a pickup 11 so that information recorded on both sides of a disc D supported by a turntable and a clamper described later can be read.
1e are arranged above and below the disk D. That is,
As shown in FIGS. 15 and 16, they are arranged at desired intervals, and the upper disk player 112 is attached to the lower disk player 111.

Hereinafter, a specific structure of the lower disk player 111 will be described with reference to FIGS.

111a is a box fixed to case 1 and this box 11
Support shafts 111b and 111c are hung from two places 1a. 111
f is a known turntable 111d for holding the disk D with a clamper to be described later, and a pickup 111e that moves horizontally to approach and separate from the turntable 111d to read information of the disk D is attached. was in the pickup base, the fixed roller 111f ₁ to the support shaft 111b and abutting at one end, elastically movable roller 111f ₂ is mounted in contact with me spring 111f _6, also, the support shaft to the other end Two fixed rollers 111f abutting on 111c
And _5, 111f _4, and the movable roller 111f ₃ elastically abuts attached by a spring 111f _6. Therefore, the pickup base 111f becomes to be supported movably only vertical movement by the roller 111f ₁ ~111f ₅ described above.

111g is a roller 111a disposed on the front and rear surfaces of the box 111a.
_A slide plate slidably mounted by ₁ has a guide hole 111g ₁ in the shape of a substantially square in the front slide plate, and two guide holes 111g ₁ in the rear slide plate. A similar guide hole (not shown) is formed. Furthermore a part of the upper edge of the slide plate 111g rack 111g ₂ is formed, the gear 111h ₁ fixed to both ends of the rotating shaft 111h which is rotated by a motor (not shown) in the rack 111g ₂ is engaged. Therefore, when the gear 111h ₁ motor rotates is rotated, the slide plate 111g is moved to the left direction as shown FIG. 15, in FIG. 16.

Movable arm 111i is attached, one end of which is pivotally supported on the pickup base 111f described above, the pin 111i ₁ is inserted into the guide hole g ₁ of the slide plate 111g projecting from a substantially central portion thereof. Then, the spring 111i ₂ is stretched between the front end of the pivot arm 111i and the pickup base 111f. Accordingly, when the slide plate 111g moves as described above, the rotating arm 111i moves upward as shown in FIG.
It is raised by the spring force of 1i ₂ . As a result, the turntable 111d raises the disk D on the tray 9 described later.

A guide bar 111j is arranged on the front and rear upper edges of the box 111a, and the tray moving frame 111k is movably guided by the guide bar 111j. A spring 111k ₁ is stretched between the tray moving frame 111k and the box 111a.
11k is spring-biased leftward in FIGS. 18 and 19. Further, before and after the lower surface of the tray moving frame 111k suspended piece 111k ₂ abutting on the moving plate 111l to be described later is formed. The movement plate 111l is mounted for horizontal movement relative to the slide plate 111g described above, the spring 111l ₁ is stretched between the slide plate 111g, are spring biased to move plate 111l always right. As described above, the pickup base 111f is raised while the slide plate 111g moves from the state of the solid line to the state of the virtual line in FIG.
1d lifts the disk D on the tray 9, and when it reaches the position of the imaginary line, the tip of the moving plate 111l is moved to the tray moving frame.
Abuts against the suspending piece 111k ₂ of 111k. When the slide plate 111g from this state to the position shown in FIG. 16 is moved, the tray moving frame 111k in accordance with this movement is moved against the spring force of the spring 111k _1, moves to the end of the box body 111a Stop (Fig. 19). Incidentally, the extra amount of movement of the slide plate 111g is absorbed by the spring 111l _1. Accordingly, the outer peripheral edge of the tray 9 is no longer located within the movement range of the pickup 111e, so that the size of the tray 9 can be made substantially the same as the size of the disk D.

A case 1 is provided on both left and right sides of the tray moving frame 111k.
Tray guide 11 similar to tray guide 8 attached to
1k ₃ is attached, together with the tray 9 coming transported by the tray transfer means 10 described above is inserted, the tray 9
Elastic engagement piece 9f and engaging projections 111k ₄ to be engaged in are formed. Further, the back sides of the tray moving frame 111k, a pair of L-shaped pivot extrusion plate 111m of each spring 111m ₁ is stretched between the tray moving frame 111k is rotatably mounted on the one end, the other The end is in contact with the tip of the protruding piece 9e of the tray 9, and is constantly biased in the direction in which the tray 9 is pushed out. Furthermore, the tray moving frame 111k, the tray guide 111k is inserted one end into the _3, the spring between the other end and the tray moving frame 111k
An L-shaped pressing plate 111n on which 111n ₁ is stretched is attached,
Pressing the side surface of the protrusion 9e in the tray guide 111k tray 9 inserted into the _3, thereby preventing the lateral direction of Gakutsuki tray 9. Therefore, the tray 9 is inserted into the tray guide 5 and the elastic engagement piece 9f of the tray 9 is
₄ , the pressing plate 111n presses the side surface of the protruding piece 9e of the tray 9 to prevent rattling in the left-right direction.
When 9f and the engagement between the projection 111k ₄ is disengaged, and performs the function of pushing out the rotating extrusion plate 111m ₁ tray 9. Incidentally, rotation pushing plate 111m ₁ is to prevent longitudinal play of the tray 9 at the time of engagement.

Next, the configuration of the upper disk player 112 will be described with reference to FIG.

The upper disc player 112 is also the lower disc player 111
Similarly, a clamper 113 is vertically movably mounted in a box 112a via a motor 112b and a reduction gear 112c, and a pickup 112d is horizontally movably mounted. Therefore, the information of the disk D held between the turntable 111d and the clamper 113 in the lower disk player 111 can be read by the pickup 112d.

By the way, when the disc D is a video disc,
Since the two disks are bonded together, the center hole of the lower disk may be misaligned with the center hole of the upper disk. Therefore, in the disk centered by the turntable 111d and sandwiched by the clamper 113, the turntable 111d does not always coincide with the center hole of the upper disk, and therefore, in this state, information is read by the upper pickup 112d. And if
The disc D may be out of alignment with the pickup 112d, which may make tracking difficult. Therefore, in the present embodiment, when reading the upper disk, the disk D is held between the turntable 111d while being centered by the clamper 113.

Hereinafter, details of the clamper 113 will be described with reference to FIGS. 21 to 26.

113a is a base fixed to the box 112a by appropriate means, and a pipe 113b is fixed at the center,
The final gear 112c ₁ of the reduction gear 112c is pivotally supported, and
A switch 1 that contacts an operation pin 113c ₁ of a gear 113c described later.
13a ₁ is installed. 113c is the gear that is rotatably supported in the pipe 113b of the lower face of the base 113a, are the final gear 112b ₁ and meshes. Also, this gear 113c 180
The circumferential lower surface spaced degree intervals, together with the operation pin 113c ₁ abutting alternately with the switch 113a ₁ is formed, on the inner peripheral side of the operating pin 113c ₁ are formed cam table 113c ₂ .

113d is in the hollow shaft spring engagement flange 113d ₁ is formed on the upper end, the kerf 113d ₂ is formed on the opposing surfaces of the lower end, opposite the該切groove 113d ₂ and 90 degrees out of position pin fitting hole 113d ₃ to is formed. 113e, together with the flat plate portion 113e ₁ which is inserted into the cut grooves 113d ₂ of the hollow shaft 113d on top is formed at shaft rod the lower is formed into a round shaft 113e _2, the said plate 113e ₁ is long hole 113e ₃ are formed. The hollow shaft 113d is inserted from above into the pipe 113b together with the spring 113g with the spring 113f accommodated therein, and the shaft 113e is inserted from below into the pipe 11b.
While it is inserted into the 3b, fitting the flat plate portion 113e ₁ to kerf 113d _2. In this state, one is inserted the pin 113h than the long hole 113b ₁ formed in the opposing surfaces of the pipe 113b, the long hole of the pipe 113b through the long hole 113e ₃ of the hollow shaft 113d ₃ and shaft rod 113e It penetrates 113b ₁ and makes both ends of pin 113h protrude. Thus, the end portion protruding from the pipe 113b is in contact with the cam base 113c ₂ of the gear 113c, the hollow shaft 1
13d and the shaft 113e are connected by a pin 113h,
The shaft 113e is spring-biased in a direction away from the hollow shaft 113d by a spring 113f. Also, hollow shaft 113d
Is biased upward by a spring 113g against the pipe 113b.

The receiving plate 113i is supported by the pipe 113d so as to be vertically movable, and is always urged downward by a spring 113j. 113k is bearing 11 against backing plate 113i
Disk press plate rotatably mounted via 3i ₁ , 1
13l is a mounting plate screwed to the lower surface of the shaft 113e, 113
m is in the position regulating plate for a disc positioning rotatably mounted via a bearing 113l ₁ against the mounting plate 113l, so that the outer peripheral portion 113m ₁ coincides with the center hole of the disk D is formed in a tapered shape It has become. A fixed central axis of the turntable 111d is provided at the center of the position regulating plate 113m.
Shaft tube 113m ₂ protrudes downwardly 111d ₁ is inserted.

Turntable 111d is be one turntable body 111d ₃ by a motor 111d ₂ built rotates,
Spring 1 is attached to the center of this turntable body 111d _3.
Position restricting plate 111d ₅ spring biased upward is attached by 11d _4.

Then, the disk D is inserted into the turntable 111d and the clamper.
The operation of pinching and reproducing by 113a will be described.

In the state in which the tray 9 is guided by the tray guide 111k ₃ of the tray moving frame 111k (Figure 22), the lower surface reproduction instruction of the disk D on the tray 9 is performed, the slide plate 111g described above moves the pickup By raising the base 111f, the turntable 111d is raised.
Position restricting plate 111d ₅ during rise of the turntable 111d performs positioning with respect to the turntable 111d enters from the lower surface of the disc D. Further, when the turntable 111d increases, the turn table body 111d ₃ since pushed up toward the lower surface of the disc D to the disc pressing plate 113k side of the clamper 113a, the disc D is the turntable body 111d ₃ and the disk pressing plate 113k Sandwiched between. Therefore, by driving the motor 111d ₂ of the turntable 111d in this state, since the disk D is rotated, the pickup
Information is read along with the movement of 111e (No.
23).

Next, the reproducing operation of the upper surface of the disk D will be described. In a state where the disc D is placed on the tray 9 (if the disc D is sandwiched between the turntable 111d and the clamper 113a, the disc D is moved to the tray 9 by an operation reverse to the above-described operation. back to the top.) When the upper surface reproduction command is executed, the final gear 112c ₁ is rotated the motor 112b is driven through a reduction gear 112c.
As the final gear 112c ₁ rotates, the gear 113c
Since operating pin 113c ₁ and 13c is rotated until it abuts against the switch 113a _1, pin 113h is lowered by the cam table 113c. Accordingly, the hollow shaft 113d and the shaft 113e are
The shaft tube 11 of the position control plate 111m is lowered against the spring force of 3g.
3m ₂ is in the desired state in the hole of the disk D (FIG. 24).

Next, the slide plate 111g starts to move and the turntable 111d starts to rise by the same operation as the above-described lower surface reproduction operation of the disc D, but the position regulating plate 113m is descending as described above during the ascent. from, the fixed center axis 111d ₁ turntable 111d is inserted into the shaft tube 113m _2, enters the position restricting plate 111d ₅ is the hole of the disk D, and the upper surface of the turntable body 111d ₃ is a disk D It contacts the lower surface (Fig. 25). Further, when the turntable 111d increases, in contact with the lower surface of the shaft tube 113m ₂ position regulating plate 113m center position restricting plate 111d ₅ is in the clamper 113, to stop the position regulating plate 111d ₅ at the contact corresponding position . However, since the turn table body 111d ₃ is further pushed up, the disc D turntable body
Raised by 111d _3, hole of the disk D is position regulating plate 111
It is inserted into the outer peripheral portion 113m ₁ position restricting plate 113m missing from d _5, the disk D is positioning by the position restricting plate 113m is performed. At the point of time when the rise of the turntable 111d is completed, the turntable body 111d ₃ clamper 1
Since the disk D is pressed and clamped against the disk pressing plate 113k of the thirteenth, the motor 111d of the turntable 111d is held.
By driving the disk ₂ , the disk D rotates (FIG. 26).

The configuration of each unit and the operation of each unit are as described above. Next, the overall operation will be described.

First, when a desired program (for example, a song for karaoke) is selected by an operation unit (not shown), the control unit (not shown) determines which disc D stores the selected song, and moves the moving base 6. By moving the tray D, the guide groove 15b of the tray transfer means 10 is aligned with the tray guides 8, 8 'in which the disk D is stored.

Then, the motor 6i is driven to rotate the rotating plate 13 in the left and right directions on the tray guide 8 or 8 'on the side where the desired disc D is stored, and further, the motor 10a is driven to move the front and rear moving plate 15 Forward, the engagement between the projection 8a of the tray guide 8 or 8 'and the elastic engagement piece 9f of the tray 9 is released by the release pin 10o, and the hook arm 10k and the hook 9g of the tray 9 are engaged. Let it. And the motor 10
a is rotated in the reverse direction to pull out the tray 9 from the tray guide 8 or 8 ', drawn into the guide groove 15b, and the motor 6i is rotated in the reverse direction to return the rotating plate 13 to the front position.

Next, the moving base 6 is moved to the position of the disc player 11 or 11 'located above or below (if the upper player 11 is playing back, the lower player 11' and the lower player 11 'are played back). player 11 to 'the case is playing moves above the player 11), a guide groove 15b of the tray transferring means 10 disc player 11 or 11' to match the tray guide 111k ₃ of the lower disc player 111 in. In this state, advancing the longitudinal movement plate 15 by driving the motor 10a for transferring the tray 9 from the guide groove 15b in the tray guide 111k _3. The tray 9 is provided with an elastic engagement piece 9.
with f is engaged with the protrusion 111k _4, the tray 9 by the pressing force of the pressing plate 111n is fixed to the tray guide 111k _3.

Then, after the slide plate 111g is moved by a motor (not shown) to raise the turntable 111d to lift the disk D on the tray 9, hold the disk D with the clamper 113, and perform positioning by the turntable 111d. Further, the movement of the slide plate 111g causes the tray moving frame 111k to move rightward. Therefore, the pickup 111e
Since the tray 9 is retracted from the moving range of the disk D, the lower surface information of the disk D can be read with the movement of the pickup 111e.

When reading the information on the upper surface of the disk D, first, the motor 112b is driven to lower the position regulating plate 113m first, and then the slide plate 111g moves to clamp the disk D, and the positioning is performed on the clamper 113 side. After the operation, the pickup 112d moves to read the information on the upper surface of the disk D.

The disc D from which information has been read is returned to the tray guides 8, 8 'while being placed on the tray 9 by an operation reverse to the operation described above.

〔The invention's effect〕

As described above, in the present invention, when reproducing the turntable side of the disc, the disc is held with reference to the turntable, and when reproducing the clamper side, the disc is held with the clamper as a reference. In the double-sided reproduction, there is no eccentricity, and therefore, there is an effect that a satisfactory reproduction can always be performed without inconveniences such as the inability to perform the reproduction because the tracking cannot be performed.

[Brief description of the drawings]

1 is an overall front view, FIG. 2 is a plan view of the same, FIG. 3 is a partially exploded perspective view of a disk transfer means, FIG. 4 is a plan view of a tray, and FIG. 5 is an assembled state of FIG. 6, FIG. 6 is a plan view showing a moving state of the above, FIG. 7 is a plan view of another portion of the disk transfer means, FIG. 8 is a partially enlarged plan view of the same, FIG. 9 to FIG. FIG. 12 is a plan view showing the moving state in FIG. 7, FIG. 12 to FIG. 14 are plan views showing the state of the disk transferred by the disk transfer means, FIG. 15 is a front view of the lower disk player, and FIG. FIG. 17 is a front view showing a moving state of the above, FIG. 17 is a plan view of FIG. 15, FIG. 18 is a plan view of a state where a tray transfer frame is mounted on the same, and FIG. Fig. 20, Fig. 20 is a bottom view of the upper disk player, Fig. 21 is an exploded perspective view of a part of the clamper in the same, and Figs. The figure is a partial cross-sectional view showing a state where a disk is held between a turntable and a clamper. 111d ...... turntable, 111d ₂ ...... spindle motor, 111d ₃ ...... turntable body, 111d ₅ ...... position regulating plate, 113 ...... clamper, 113a ...... base, 113d ...... shaft rod, 113k ...... disc pressing Plate, 113m ... Position control plate.

Continuing from the front page (72) Inventor Masatoshi Watanabe 4-2610 Hanazono, Tokorozawa-shi, Saitama Prefecture, Pioneer Corporation Tokorozawa Plant (72) Inventor Masaki Iwamoto 4-2610 Hanazono, Tokorozawa-shi, Saitama Prefecture Pioneer Corporation Tokorozawa Plant

Claims (1)

(57) [Claims] 1. A turntable having a turntable body attached to a spindle motor and moving up and down with the spindle motor, and a position regulating plate provided in the turntable body and inserted into a hole of a disk by a spring bias. A table, a base that is lowered when the disk is raised by the turntable, a shaft that is freely supported only in the vertical direction with respect to the base, and that moves up and down by a driving source such as a motor; A position regulating plate rotatably supported and inserted into a hole of the disk, and a disk pressing plate provided on the shaft for pressing a disk surface toward the turntable body by a spring bias. A clamp device for a disc player, comprising: a clamper.