JPS63113968A - Disk player - Google Patents

Abstract

PURPOSE:To attain consecutive reproduction of both sides of a disk by connecting a planetary gear device switched to either transmission drive of the drive of a cover or a clamper drive to a drive motor. CONSTITUTION:A disk driver 4 driving a disk such as a laser disk A placed on an opening 3 formed to one side face of a player main body 2 is arranged and a cover 6 opening an opening 3 is supported via the drive motor provided to the player main body 2 freely turnably and a couple of clampers 53, 54 turnable supporting and releasing the circumference of the disk A are provided between the cover 6 and the opening 3 of the player main body 2. The planetary gear device selected to any transmission drive of the cover 6 or the clampers 53, 54 is coupled with the drive motor. Thus, one set of drive motor opens the cover 6 and turns over the disk automatically. Thus, both sides of the disk are reproduced consecutively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a disc player that continuously reproduces, for example, a laser disc on which video signals and audio signals are recorded on both sides.

[Summary of the Invention] The present invention provides a disc player in which a disc drive device for placing and rotating a disc, such as a disc-shaped laser disc, is placed in an opening formed on one side of the player main body, and the disc drive device is configured to open and close the opening. A pair of rotatable lids are rotatably supported via a drive motor provided on the player body, and hold and release the peripheral edge of the disc between the opening of the player body and the lid. By providing a clamper and connecting a planetary gear device to the drive motor that can switch to transmission drive of either the rotation of the lid body or the rotation of the clamper, the disk is automatically turned over and both sides of the disk are rotated. can be played continuously.

[Prior Art] For example, an optical pickup unit irradiates a laser beam onto one side of a disk-shaped laser disk (LD) on which video signals and audio signals are recorded by pits on both sides, and the information on one side of the laser disk is read and reproduced. A small laser disc player is known. This laser disc player generally consists of a player main body in which a disc drive device consisting of a spindle motor, a turntable, etc. is arranged in an opening formed on the top surface (-side surface), and a lid body that opens and closes the opening of the player main body. It is configured. Then, open the lid, place the laser disc on the turntable of the disc drive, and close the lid.
The laser disc is automatically held between a clamp rotatably attached to the lid and a spindle of a spindle motor, and is rotated at high speed for reproduction.

[Problems to be solved by the invention] However, as mentioned above, since information is recorded on both sides of a laser disc, a small laser disc player with a conventional configuration cannot continuously play both sides of the laser disc. When the user attempts to play the laser disc on one side, the user opens the lid, takes out the laser disc installed in the disc drive, turns the laser disc over outside, and reinstalls it in the disc drive. It was necessary, and it was not easy to use.

In addition, there is a cabinet that stores a plurality of optical discs, and a drive device that reads and writes information on the optical discs.

A large disc recording and reproducing apparatus resembling a jukebox is known, which consists of an elevator that takes out an optical disc from the cabinet and automatically inserts it into a drive device, and allows the optical disc to be loaded and turned over without human intervention. This is suitable for storing large amounts of data that are not used very frequently because it takes a long time to load the optical disc in the elevator or turn it over. Therefore, it is desired to develop a compact, easy-to-use disc player that has a built-in disc reversing mechanism that can smoothly flip the disc.

Therefore, it is an object of the present invention to provide a disc player that can automatically turn over a disc smoothly in a short period of time and continuously play back both sides of the disc.

[Means for Solving the Problems] The disc player of the present invention includes a disc drive device for placing and rotating a disc-shaped disc in an opening formed in one side of the player body, and a disc drive device for rotating the disc-shaped disc. A rotatable pair that rotatably supports a lid body to be opened and closed via a drive motor provided on the player body, and holds and releases the peripheral edge of the disc between the opening of the player body and the lid body. A clamper is provided, and a planetary gear device that can be switched to transmit drive for either rotation of the lid or rotation of the clamper is connected to the drive motor.

[Operation] When the playback of one side of the disc loaded in the disc drive device of the player body is completed and the lid is opened via the drive motor, the disc is held by a pair of clampers and lifted upward by a predetermined angle. , is reversed by driving the drive motor by switching the planetary gear system. As a result, the disc is turned over and played continuously.

[Example] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The symbol l in the figure is a small laser disc player,
This is for playing back a disc-shaped laser disc A that has color video signals, stereo second channel audio signals, and control signals recorded on both sides using pits. This laser disc player 1 includes a player main body 2 having an opening 3 formed on the top wall 2a (-side) side and a disc drive device 4 disposed approximately in the center of the opening 3, and a player main body 2 on both sides of the player main body 2. A lid 6 which is rotatably supported via a support shaft 5 at the upper end and opens and closes the opening 3, and a circular opening 7 which holds the laser disc A reversibly at approximately the center are formed. , a disc tray 8 is interposed between the opening 3 of the player body 2 and the footwear 6, and is supported by the support shaft 5 so as to be freely available during the day.

The player main body 2 is formed into a box shape with an opening 3 on the upper wall 2a side by molding of synthetic resin, and the opening 3 is covered with a blind plate 9. This blindfold board 9
A substantially U-shaped notch hole 9a is formed in the rear wall 2b side of the player main body 2 from the center part, and a plurality of rectangular notch holes 9b are formed at diagonal positions spaced a predetermined distance from the center part ( For example, 4 pieces) are formed. The disk drive device 4 is disposed inside the approximately U-shaped cutout hole 9a on the front wall 2C side of the player body 2, and the laser pickup 10 is disposed inside the rear wall 2b side of the player body 2. It is.

The disk drive device 4 includes a spindle motor 11 that rotates the laser disk A at high speed, a spindle 12 that is fixed to a rotating shaft 11a of the spindle motor 11 and protrudes from the upper surface of the blind plate 9, and The turntable 13 is integrally provided on the outer periphery of the upper end and is configured with a turntable 13 on which the laser disc A is placed.

The laser pickup 10 consists of an objective lens 14, a laser diode (not shown), etc., and reads information on the laser disk A in close proximity to one side (lower surface) of the laser disk A, and consists of a rack, a binion, etc. A moving device (not shown) allows the laser disk A to be directly reciprocated in the radial direction.

Further, each of the rectangular notch holes 9b of the blind plate 9 is provided with a disc mounting member 15 that supports and positions the peripheral edge of the laser disc A so as to be freely retractable.

That is, the lid 6 is provided at the bottom of each disk mounting member 15.
An elevating device (not shown) consisting of a cam or the like that moves each disk mounting member 15 up and down in conjunction with the opening and closing of the disk is provided. With this elevating device, the disc mounting member 15 is located above the top surface of the turntable 13 of the spindle 12 when the laser disc A is mounted, and is located below the top surface of the turntable L3 when playing back the laser disc A. It looks like this.

Further, between the upper ends of both side walls 2d and 2e of the player main body 2 near the rear wall 2b, the support shaft 5, which rotatably supports the lid body 6 and the disc tray 8, is pivotally supported. . The right side wall 2e of the player main body 2 in front of this support shaft 5
A gear box 17 containing a planetary gear device 16 is fixed to the adjacent bottom wall 2r with screws 18 or the like.

The planetary gear device 16 includes a first shaft 19 pivotally supported substantially in the center between the left and right side plates 17a and 17h of the gear box 17, and is rotatably supported by the first shaft 19, and has a side surface ( Right side plate 17 b of gear box 17
a large-diameter reduction gear 20 with a small-diameter engagement hole (20a) formed in the side surface of the in++, and a first shaft 19
a sun gear 21 which is rotatably supported by a sun gear 21, whose other end 21a is fitted into and fixed to an engagement hole 20a of the reduction gear 20, and has a toothed portion 21b formed on the outer periphery of one end;
The sun gear 21 is rotatably supported by a midway portion 21c where the tooth portion 21b is not formed, and a tooth-shaped small diameter pulley 22a is integrally molded on the outer periphery of the other end, and a large diameter pulley 22a is integrally formed on the outer periphery of the one end. Internal gear 22 with integrally molded teeth 22b
A pair of planetary gears 23, 23h are rotatably supported on the first shaft 19 and mesh with the sun wheel 21 and the internal gear 22 on the other side. It is composed of a spur gear 24 having a small-diameter outer periphery and a toothed portion 24a integrally formed therein.

A drive motor 25 is fixed to the outer surface of the left side plate 17a of the gear box 17, and is rotatable in forward and reverse directions.

The planetary gear device 16 is attached to the tip of the rotating shaft 25a protruding from the inner surface of the left side plate 17a of the drive motor 25.
A small diameter gear 26 that meshes with the reduction gear 20 is fixed. Further, a double gear 28 is rotatably supported on the upper part of the right side plate 17b of the gear box 17 via a short shaft 27. The large-diameter tooth portion 28a of this double gear 28 meshes with the small-diameter tooth portion 24a of the spur gear 24 that protrudes outward from the right side plate 17b, and the small-diameter tooth portion 28b of the double gear 28 meshes with the small-diameter tooth portion 24a of the spur gear 24, which will be described later. Internal gear part 4 of fan-shaped hinge 42 of body 6
It meshes with 5. Further, a pulley 29 having a tooth-shaped outer periphery is fixed to a position of the support shaft 5 facing the planetary gear device 16. A belt 30 made of rubber or the like is connected between this pulley 29 and the pulley 22a of the internal gear 22.
is being constructed.

Further, the left and right side plates 17a of the gear box 17.

A clutch plate 32 is rotatably supported on a second shaft 31 which is pivotally supported at a position closer to the front of the lower part between 17b. This clutch plate 32 is connected to the outer toothed portion 2 of the internal gear 22.
The first claw part 32a engages and disengages from the spur gear 24, and the second claw part 32b engages and disengages from the spur gear 24. The second claw portion 32b of the clutch plate 32 is connected via the operation bar 33 to the tip end of the piston 35 of the plunger 34 fixed to the bottom wall 2f of the player body 2. A coil spring 36 is interposed between the tip of the piston 35 of the plunger 34 and the connecting bar 17c of the gear box 17.

Therefore, under normal conditions, the piston 3 of the plunger 34
5 has moved backward, and the first claw portion 32a of the clutch plate 32 is engaged with the outer tooth portion 22b of the internal gear 22, thereby fixing the internal gear 22. In this state, when the drive motor 25 is rotated in one direction, the drive motor 25
The rotational force of the reduction gear 20. The signal is transmitted to the double gear 28 via the sun wheel 21, a pair of planetary gears 23 and 23, and a spur gear 24. Also, when turning over the laser disc A, the piston 3 of the plunger 34 is
5 is moving forward, and the second claw portion 32b of the clutch plate 32 is engaged with the spur gear 24, so that the spur gear 24 is fixed. In this state, when the drive motor 25 is rotated in one direction, the rotational force of the drive motor 25 is generated by the reduction gear 20, the sun wheel 21, and the pair of planetary gears 23, 23.
, a belt 30, and a pulley 29 to be transmitted to the support shaft 5.

Note that the front wall 2c of the player main body 2 protrudes forward and is curved in an arc shape. This front wall 2c includes a power switch 37, a device opening switch 38, a disc tray opening switch 39, a lid closing switch 40, a play/pause switch (not shown below), a stop switch, a rewind switch, a fast forward switch, and a display section. (The part that displays the clock, mode, etc.) etc. are provided.

The lid body 6 is integrally molded with a synthetic resin molding or the like so that the planar shape is the same as the shape of the player body 2, and it hangs down from the upper wall 6a and the arcuate edge of the upper wall 6a. It has a front wall 6b, and left and right side walls 6c, 6d hanging down from both side edges of the upper wall 6a. The lower rear ends of both side walls 6c and 6d of the lid body 6 further hang down in a semicircular shape and are rotatably supported on the player body 2 via the support shaft 5.

Left and right side walls 6c at the rear of the lower surface of the upper wall 6a of the lid body 6;

A pair of fan-shaped hinges 4 made of synthetic resin are located near 6d.
1.42 is fixed parallel to both side walls 6c and 6d.

The support shaft 5 passes through the tip ends of the pair of fan-shaped hinges 41 and 42, each having an apex angle of about 60 degrees.

A cam groove 43 is formed on the bottom side of the inner surface of the left fan-shaped hinge 41, and includes a circular arc portion 43a and a straight portion 43b bent from the circular arc portion 43a toward the support shaft 5 side.

In addition, on the bottom side of the outer surface of the right fan-shaped hinge 42,
A cam groove 44 is formed of a circular arc portion 44a and a straight portion 44b bent from the circular arc portion 44a toward the bottom side thereof, and the double gear 28 of the planetary gear set 16 is formed on the bottom side of the inner surface. Internal gear part 45 meshing with small diameter tooth part 28b
It is integrally extruded. In addition, a pair of fan-shaped hinges 41
．． At predetermined positions near the player body 2 on the circumferential surface of the discs 42, there are protruding and fixed disc trays 46 on which a disc tray 8, which will be described later, is placed.

Further, the player body 2 on the lower surface of the upper wall 6a of the lid body 6
A disk clamp 47 is rotatably attached to a position corresponding to the spindle 12.

The disk tray 8 is formed into a frame shape by molding synthetic resin, and is completely accommodated in a recess 9c formed by the upper wall 2a of the plate main body 2 and the blindfold 9 when closed, and its upper surface is It is designed to intersect with the upper wall 2a of the plate main body 2. The support shaft 5 passes through the base end 8a of the disc tray 8 to rotatably support the disc tray 8, and both ends of the base end 8a are cut out to cover the lid. A pair of fan-shaped hinges 41.4 of the body 6
2 can be inserted freely.

Furthermore, an opening 7 having a diameter slightly larger than the outer diameter of the laser disc A is formed approximately in the center of the disc tray 8.

A recess 48 for accommodating the disc mounting member 15 of the player main body 2 is formed in the peripheral wall 8b of the opening 7 at a position corresponding to the disc mounting member 15 of the player main body 2. 2 spindle 12
Both sides corresponding to the left and right side walls 8 of the disk tray 8
Recesses 49, 50 and 51.52 are formed in recesses 49, 50 and 51, 52, respectively. These recesses 49 of the peripheral wall 8b and the left side wall 8
between the recess 51 of c and the recess 50 of the peripheral wall 8b and the right side wall 8
A pair of clampers 53 and 54 are disposed between the recess 52 and the recess 52 of d so as to be rotatable and movable forward and backward.

As shown in the exploded perspective view of FIG. 5, the clamper 53 located on the left side has a curved V-groove 55a formed on its circumferential surface, and is connected to a holding portion 55 accommodated in the recess 49 of the disk tray 8. , is integrally molded at the center of the bottom surface of this holding part 55,
It has a shank portion 56 that is penetrated by the recessed portion 49. This shank portion 56 consists of a large diameter portion 56a and a small diameter portion 56b. A cylindrical bevel gear 57 passing through the recess 51 of the disc tray 8 is loosely inserted into the small diameter portion 56b of the shank portion 56. This bevel gear 57 has a protruding pin 58 on its inner circumferential surface that engages with a long groove 56c formed in the small diameter portion 56b of the shank portion 56, and a screw 59 that is screwed onto the shank portion 56. The biasing force of a compression coil spring 60 interposed between the head and the tip of the bevel gear 57 causes the training shank portion 56 to move toward the large diameter portion 56a side.

Moreover, the small diameter II of the shank portion 56 of the clamper 53
The ring-shaped cam follower 61 is loosely inserted into S6b, and the elongated hole 62a of the cam plate 62 is loosely inserted.

A pair of cam surfaces 62b, 62b are formed on one side of the cam plate 62 on the side of the holding portion 55 of the clamper 53, which are inclined forward so as to sandwich the elongated hole 62a. The base end of the cam plate 62 is supported by a pin on the tip of an elongated link 63 disposed on the lower surface of the disk tray 8 so as to be movable back and forth. A pair of elongated holes 63a, 63a are formed in the center of the link 63. This pair of long holes 6
3a and 63a are inserted into a pair of pins 64 and 64 protruding from the lower surface of the disc tray 8, and are prevented from being removed by a retaining ring 65. Further, a pin 66 that fits into the cam groove 43 of the fan-shaped hinge 41 is provided at the base end of the link 63. Further, a tension spring 67 is interposed between the tip of the link 63 and a predetermined position on the lower surface of the disk tray 8. As a result, when the lid body 6 opens, the pin 66 of the link 63 moves along the straight line i$4 of the cam groove 43 of the fan-shaped hinge 4.
3b pulls the link 63 rearward (in the direction indicated by the arrow in FIG. 3), and each cam surface 62b of the cam plate 62 pushes up the shank portion 56 of the clamper 53, so that the clamper 53 moves forward and releases the laser disc A. It is designed to clamp the periphery of the This clamper 53
The most advanced stop position is set as a reference position for a proper mounting position for clamping the laser disc A to the spindle 12 of the player main body 2.

In addition, a bevel gear 57 that rotates with the Kun rubber 53
is the four part 6 formed on the left side wall 8C of the disk tray 8.
It meshes with a bevel gear 70 provided at the tip of a shaft 69 that is rotatably supported by a shaft 69. A gear 72 that meshes with a worm gear 71 fixed to the support shaft 5 of the player main body 2 is fixed to the base end of the shaft 69, and a bevel gear 70, which rotates A disk-shaped operation plate 74 is fixed to detect the rotation of the clamper 53 and to turn on and off the Mitswitch 73.

The clamper 54 located on the right side has a curved V on its circumferential surface.
A groove 75a is formed in the recess 50 of the disc tray 8.
A holding part 75 accommodated therein, and a recess 50 and a recess 5 of the right side wall 8d integrally molded at the center of the bottom surface of the holding part 75.
2 and is rotatably attached to the shank portion 7.
6. This shank portion 76 has an annular Zllll portion 16a in the middle thereof, and is prevented from coming off from the recess 52 of the right side wall 8d by a stop plate 78 fixed to the base end surface of the shank portion 76 with a screw 77. . Then,
A compression coil spring 79 is interposed between the holding portion 75 of the clamper 54 and the outer surface of the recess 50.

Further, the groove portion 76 of the shank portion 76 of the clar lever 54
One end 80a of an L-shaped link 80, which is pivotally supported by a pin on the lower surface of the disk tray 8, is fixed to the portion a. The other end 80b of this L-shaped link 80 is a long link 8 disposed on the lower surface of the disk tray 8 so as to be movable back and forth.
A pin is pivotally supported at the tip of 1.

A pair of elongated holes 81a, 8 are provided in the center of the link 81.
1a is formed. This pair of long holes 81a, 81a
is inserted through a pair of pins 82, 82 protruding from the lower surface of the disc tray 8, and is prevented from being removed by a retaining ring 83. Further, the fan-shaped hinge 42 is attached to the base end of the link 81.
A pin 84 that fits into the cam groove 44 is provided. As a result, when the lid body 6 opens, the pin 84 of the link 81 pulls the link 8I forward (in the direction indicated by the arrow in FIG. 3) by the linear portion 44b of the fan-shaped hinge 42, and pushes up the shank portion 76 of the clamper 54. By this, the clamper 54
is adapted to move forward against the biasing force of the compression coil spring 79 to clamp the peripheral edge of the laser disc A.

According to the laser disc player 1 of the above embodiment, when the laser disc A is loaded, when the power switch 37 is turned on and the lid opening switch 38 is turned on, the driving motor 25 is driven. gear 26
Then, the predetermined gears of the planetary gear set 16 and the double gear 28 rotate in the directions of the arrows shown by solid lines in FIG. 4, respectively.

Then, the small diameter gear 28b of the double gear 28 and the internal gear part 45 of the sector hinge 42 of the lid body 6 are engaged with each other, so that the sector hinge 42 is lifted upward with the support shaft 5 as a fulcrum. As a result, only the lid 6 opens to a position of about 30 degrees as shown by the two-dot chain line in FIG. At this time, a pair of fan-shaped hinges 4
Since the left and right links 63.81 connected to the respective cam grooves 43.44 of 1.42 do not move, the pair of clampers 53.81 do not move.
54 is stopped. In this state, the laser disc A is placed on the tartable 13 of the spindle 12 of the player body 2.
Put on. Next, when the lid closing switch 40 is turned on and the drive motor 25 is reversely rotated to close the lid 6, the laser disc A is automatically held between the spindle 12 and the disc clamp 47. . Then, when a playback switch (not shown) is turned on, the laser disc A is rotated at high speed by the spindle motor 11 and played back.

Next, when the back side of the laser disk A is to be played continuously after the single side of the laser disk A has been played, the shoe body 6 is further opened from the approximately 30 degree open position shown by the two-dot chain line in FIG. When opened to about 45 degrees by the drive of the drive motor 25, each cam groove 4 of the pair of fan-shaped hinges 41 and 42 opens.
The left and right links 63.81 linked to 3.44 move in respective predetermined directions. As a result, the disk tray 8
Clampers 53 and 54 move toward the peripheral edge of the laser disk A and reliably clamp the laser disk A in a positioned state. After this clamping is completed, when the lid body 6 is further opened, the pair of fan-shaped hinges 41 and 42
The disk tray 8 is placed on each screw 46, 46, and the disk tray 8 is opened in conjunction with the lid 6.

As shown by the two-dot chain line in FIGS. 8 and 9, the lid body 6 is approximately 9
At 0 degrees, the disc tray 8 opens to a position of about 45 degrees and both stop.

Then, when the clutch plate 32 of the plunger 34 is switched to lock the second claw portion 32b of the clutch plate 32 to the spur gear 24 of the planetary gear device 16, and the drive motor 25 is driven,
The gear 26 of the drive motor 25, a predetermined gear of the planetary gear set 16, and the support shaft 5 rotate in the directions of the arrows indicated by the dashed lines in FIG. 4, respectively. As a result, the disk tray 8
The shaft 69 having a bevel gear 70 rotates in the direction of the arrow shown by the solid line in FIG.
Rotate 80 degrees. As a result, the laser disc A
is automatically reversed. The end of this reversal is detected by the limit switch 73, and then the clutch plate 32 of the plunger 34 is switched to the original locking relationship. Then, by turning on the lid closing switch 40 and rotating the drive motor 25 in the reverse direction, the disc tray 8 and the lid 6 are closed, and the laser disc A is moved between the spindle 12 and the disc clamp 47, as described above. It is positioned between and held and played continuously.

In this way, the laser disc A is reliably positioned and easily turned over by the pair of clampers 53, 54 without user intervention. In addition, the player body 2, the lid body 6
Since the disc tray 8 is formed by molding synthetic resin, the overall weight of the player can be further reduced. Furthermore, the lid body 6 and a pair of clampers 53
．． 54 can be rotated by one drive motor 25 by switching the planetary gear device 16, so that the diameter can be reduced.

Although the surface wall 2c of the player main body 2 in this embodiment is formed in a curved manner, it goes without saying that the entire laser disc player l may be made into a square rectangular parallelepiped, and the object is not limited to players for laser discs. Of course, other disks may also be used.

[Effects of the Invention] As described above, according to the present invention, a disk drive device for placing and rotating a disk such as a disc-shaped laser disk is disposed in an opening formed on one side of a player main body, and A rotatable lid body for opening and closing the disc is rotatably supported via a drive motor provided on the player body, and the peripheral edge of the disc is held and released between the opening of the player body and the lid body. A pair of clampers are provided, and a planetary gear device capable of transmitting either rotation of the lid body or rotation of the clamper is connected to the morning shift motor. The lid can be opened by pressing the button, and the disc can be turned over automatically. This allows both sides of the disc to be played continuously.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall perspective view of a laser disc player, FIG. 2 is a perspective view of the drive system, FIG. 3 is a horizontal sectional view of the same, and FIG. 4 is a planetary disk player. Figure 5 is an exploded perspective view of one of the clampers; Figure 6 is a perspective view of the laser disc player with the lid open; Figures 7 and 8 are the right side view of the same. FIG. 9 is a vertical cross-sectional view of the left side of the same. ■... Laser disc player, 2... Player body, 2a... Top wall (-side), 3... Opening,
4... Disc drive device, 6... Lid body, 16... Planetary gear device, 25... Drive motor, 53... Clamper, 54... Clamper, A... Laser disk. Illustration of leftover shells of Mari Genshi

Claims (1)

[Claims] A disk drive device for placing and rotating a disc-shaped disk is placed in an opening formed on one side of the player body, and a lid body for opening and closing the opening is connected via a drive motor provided in the player body. A pair of rotatable clampers are provided that are rotatably supported and hold and release the peripheral edge of the disc between the opening of the player main body and the lid, and A disc player characterized in that a planetary gear device capable of switching to either one of transmission drives is connected to the drive motor.