JPS60256958A - Disc playing device - Google Patents

Abstract

PURPOSE:To reduce the cost and to increase the number of stored discs by providing a lot of disc carrying units stacked together and a means for pressing them to a disc storage section. CONSTITUTION:The disc carrying units 17 stacked together are provided to the storage section storing a lot of discs and the discs are aligned by fitting the disc center hole to a projection 18d on a plate member 18. The units 17 are stacked on a receiving plate 24 and the upper face of the units is pressed by a retaining plate 25 fitted to shafts 20, 21, 22. Since the size of the device shaping the disc carrying units 17 is small, the cost is reduced and the number of stored discs is increased by adding properly the units 17. Since the units are pressed by the retaining plate 25, the storage section is not deformed in the disc arranging direction due to thermal expansion.

Description

TECHNICAL FIELD The present invention relates to a disc playing device, and more particularly to a disc playing device that can accommodate a plurality of discs and can sequentially select any of the stored discs for continuous performance.

Precursor technology Various disc playing devices that can play multiple discs in succession have already been proposed and used, but basically there is a disc storage unit that arranges and stores multiple discs in order with a predetermined pinch, and a turntable. The apparatus includes a disc playing means including a table, a pickup, etc., and a disc ejecting and transporting mechanism that sequentially selects and grips arbitrary discs in the disc storage section and transports them to a playing position, that is, onto the turntable. In disc playing devices that have already been developed, the disc storage section is integrally formed of resin or the like.

However, it is difficult to integrally mold the entire product in this way, and the equipment for molding is also large-sized, resulting in high costs. Furthermore, there is a problem in that the number of discs that can be stored in the integrally molded disc storage section is limited.

1"column" The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a disc playing device that is inexpensive and can appropriately increase the storage capacity of discs.

A disc playing device according to the present invention includes: a disc storage unit that can sequentially arrange and store a plurality of discs; a disc playing unit; and a disc ejecting and transporting mechanism that sequentially selects and transports arbitrary discs in the disc storage unit to a playing position. The disk storage section is characterized by having a large number of disk holding units stacked on top of each other in the disk arrangement direction, and a suppressing means for pressing the disk holding units i- in the stacking direction.

Embodiments Hereinafter, a disc playing device as an embodiment of the present invention will be explained with reference to the accompanying drawings.

In the figure, reference numeral 1 designates the entire disc playing device which prepares a plurality of information recording discs such as video discs and plays the discs selectively.

As shown in FIG. 1, the housing 2 as a whole is formed, for example, in the shape of a rectangular parallelepiped, and on the front side of the housing there is a window, which is offset to the side, through which a disk can be taken in and taken out of a disk storage section, which will be described later. It is provided. However, the left side referred to here means, for example, the direction toward the front indicated by the arrow Y in FIG. 2, which is indicated by the arrow X. Further, the direction of arrow Z is upward. The window for loading and unloading the disc is formed over substantially the entire length of the housing 2 in the vertical direction, and a door 3 is provided to close the window. Almost the entire surface of the door 3 is made of a transparent glass plate 38, etc., so that the mechanism inside the housing 2 can be seen from the outside of the housing. Note that an operating section 5 for operating the disc playing device is placed on the housing 2. The operation section 5 has an adjustment section 6 for adjusting the volume, etc., and a music selection section 7 including a keyboard 7a for selecting songs, and a coin is placed on the left side of the adjustment section and the music selection section. A coin receiving section 8 for receiving coins is arranged.

Further, on the bottom surface of the housing 2, there is provided a starter 10 that facilitates the transportation of the disc playing device.

As shown in FIG. 2, the housing 2 has an underbase 11 forming the bottom of the housing and a frame 12 as a pivot. This frame 12 is made of lightweight angle iron or the like. Inside the housing 2, a disk storage section 16 is arranged behind the disk loading/unloading window, that is, on the rear left side of the housing, in which a plurality of disks 15 can be sequentially arranged and stored in a predetermined width. In this case, the plurality of disks 15 are arranged and housed in the vertical direction (in the direction of the arrow 27j and the opposite direction). Note that these disks 15 are called optical disks that record and read signals using, for example, laser light. As is clear from FIGS. 3 and 4, the disk storage section 16 has a large number of disk carrying units 17 stacked on top of each other in the disk arrangement direction. 3 shows the uppermost layer of the disk storage section 16, and FIG. 4 shows the lowermost layer of the disk storage section 16.

As shown in FIG.
is a plate-like member 18 which has two sides 18a and 18b that are perpendicular to each other and has a semicircular disk storage portion 18C on its main surface.
Each disk 15 is positioned and housed by fitting the center hole of the disk and the disk into a positioning projection 18d protruding from the main surface of the plate-like member. This plate-like member 1
8 is the dotted part 1 on the two sides 18a and 18b to reduce weight.
8e is cut into a substantially triangular shape. As is clear from the figure, the respective extensions of the two sides 18a and 18b and the extension of the diameter of the semicircular disk storage portion 18c form a right triangle. A single shaft 20 is fitted into each disk carrying unit 17 near the vertices of the two sides 18a and 18b indicated by -L. Furthermore, a pair of shafts 21 and 22 are fitted into each disk carrying unit 17 near the ends of the two sides 18a and 18b, respectively. Second
As shown, each shaft 20, 21 and 22 is fixed to the underbase 11 at its lower end.

Each of these 1! The feet 20, 21, and 22 constitute slip prevention means for preventing each disk carrying unit 17 from slipping.

As shown in FIG. 4, each disk carrying unit 17
are stacked on a receiving plate 24 located near the lower end of the shafts 20, 21 and 22. These receiving plates 1 to 2/l fit into each shaft 20, 21, 22, and are restricted from moving downward by three retaining rings 24a. As shown in FIG. 3, on top of each stacked disk supporting unit 17 is a presser plate 2 that fits into the shifter 20, 21, 22.
5 is provided. For example, a nut 26 is screwed into the first threaded portion 20a at the upper end of the shaft 20.

Nuts 26 are similarly screwed into the -1 ends of the other shafts 21 and 22. A coil spring 27 is installed between the rat 26 and the presser plate 25, and a washer 27a
It is condensed through.

The plate 24, the holding plate 25, the nut 26, the coil spring 27, and small peripheral members related to these constitute a suppressing means for pressing each disk carrying unit 17 in the stacking direction. There is. It should be noted that this suppressing means and the above-mentioned anti-skid means consisting of the shaft 20 and the like are included in the disk storage section 16.

As is clear in FIG. 2, an upper base 29 is provided at the further end of the presser plate h 25 provided above the stacked disc 10 holder 17, and an upper base 29 is provided on the bottom of the presser plate h 25, which is placed above the stacked disc 10 holder 17. It is fixed by a nut 30 to a second threaded portion 20b (shown in the third diagram) formed at the uppermost end of the screws 20 to 20.

As shown in FIG. 2, a disc playing means for playing a disc, including a turntable 31, a spindle motor 32, an optical pickup 33, etc., is arranged approximately at the center of the underbase 11. This disk playing means was developed by the applicant, for example, in U.S. Pat. No. 58-169560.
It has substantially the same configuration as the disc playing means included in the front-loading disc player that was filed in 1999, and its specific configuration will not be described in detail here.

Next, a description will be given of a disk ejecting and conveying mechanism that sequentially selects an arbitrary disk from among the plurality of disks 155 arranged and stored in the disk storage section 16 and conveys it to the performance position δ, that is, onto the turntable 31.

As shown in FIG. 2, guide shafts 36 and 37 are provided as a pair of guide members that extend along the disk arrangement direction of the disk storage section 16, that is, in the downward direction. Underbase 11
Fixed. Also, both guides 1 shift 36.3
The upper end portion of 7 is fixed to an upper base 29. A base 40 is slidably attached to both guide shafts 36, 37. Both guide shafts 11 feet 36 and 37
extends along the front surface of the housing 2, so that the base 40 moves near the front surface of the housing where the window for inserting and removing discs is provided.

As is clear from FIG. 5, the base 40 is formed as a single straight bar as a whole. Describing in detail the state in which the base 40 is attached to each of the guide shafts 36 and 37, the base is movable around the guide shaft 37 at a cylindrical portion 40a provided approximately at the center in the longitudinal direction of the base. A pair of rollers 41 made of ball bearings or the like are fitted closely together at the left end.
It is slidably engaged with the guide shaft 36 via a and 41b. Of the pair of rollers installed, the front [
The lever 41a is provided on the base 40 so as to be swingable in a plane perpendicular to the direction of movement of the base.
The roller 41a is biased toward the guide shaft 36 by a coil spring 41d.

As is particularly clear in Figure 6, underbase 1
1, a small spindle 43b is attached via a bracket 43a.
is rotatably installed, and a pair of toothed belt wheels 43C and 43d are fitted to both ends of the small spindle, respectively.A fixed plate i is installed near the bracket 43a.
A motor 44 is fixedly installed via a motor 44a, and a toothed belt 46 is installed between a toothed belt pulley 44 fitted to the output shaft of the motor and a toothed belt pulley 436.

On the other hand, a toothed belt pulley 29C is also rotatably attached to the upper base 29 via a bracket 29a and a small spindle 29b, and a toothed belt 47 is installed between the toothed belt pulley 29c and the toothed belt pulley 43C. has been done. A portion of the toothed belt 47 is fixed to the base 40. That is, by rotating the motor 44 in the forward and reverse directions, the base 40 is reciprocated up and down.

As shown in FIGS. 2 and 6, a rail 49 serving as a guide member is provided in front of the base 40 in parallel with the guide shaft 37. As shown in FIGS. The rail 49 has a substantially C-shaped cross section perpendicular to its longitudinal direction, and a counterweight 50 is fitted into the internal space of the rail so as to be movable in the vertical direction. As is clear in FIG. 6, the counterweight 50 is connected to the rail 49
A pair of pulleys 51 are provided at the upper end and the lower end.
It is connected to the base 40 by a wire 53 installed between the wires 52 . That is, the counterweight 50 is guided by the rails 49 and moves relative to the base 40.

As shown in FIG.
A pair of swinging members 55 are provided at one end of the engagement with the four rails, that is, the right end, and are spaced apart in the direction of movement of the counterweight, and are swingable in the direction of movement of the counterweight. No. 1 is attached to the bracket 55a through the bracket 55a. A pair of rollers 56 that come into contact with the inner surface of the rail 49 are provided at one end of each swing member 55 . Further, a single coil spring 57 is provided between the pair of swinging members 55, and both swinging members 55
5 are moved toward each other by the coil spring (
= I have been attacked. Rail 49 with counterweight 50
A roller 59 that comes into contact with the inner surfaces of the four rails is rotatably attached to the other end, that is, the left end, via a bracket 59a.

A pair of swinging members 55 described above, a pair of rollers 56,
The coil spring 57, the roller 59, and peripheral small members related thereto constitute a contact means for bringing the counterweight 50 into close contact with the rail 49, which is a guide member.

Here, the counterweight 50 is installed on the right side of the front surface of the housing 2, and is configured to move near the front surface of the housing 2. By arranging the counterweight 50 in this manner, the combined center of gravity of the counterweight and the base 40 can be brought to the right front part of the housing 2. 16 and the center of gravity 4, the overall weight balance of the disk playing device in the front, rear, left and right directions is good.

As shown in FIGS. 2 and 5, the base 40 is provided with a guide shaft 61 that extends in a direction perpendicular to the direction in which the disks are arranged in the disk storage section 16, in this case in the left-right direction. As is particularly clear in FIGS. 7 and 8, a movable sill 4 formed by connecting two divided sills 17 and 62 and 63 to each other is slidably attached to the guide shaft 61. It's being done.

As shown in FIG. 5, a pair of toothed belt wheels 66a and 66b are rotatably provided at the right and left ends of the base 71IO, and both toothed belt wheels have teeth. A belt 67 is installed. Right toothed belt wheel 6
A motor 68 is fixed near the motor 6b via a bracket 68a, and an A-
A where the unevenness 8b is integrally formed with the toothed belt wheel 66b.
- is meshed with the wheel 66C. That is, the movable chassis 64 is made to reciprocate from side to side by the forward and reverse rotation of the motor 68.

A spindle 71 extending in a direction perpendicular to the disk arrangement direction (vertical direction) of the disk storage section 16 is attached to the movable chassis A7-shall 64, which is composed of two divided chassis 62 and 63, and is rotatable about an axis ( A frame 72 bent into a substantially C-shape is fixed to the left end of the spindle 71. A pair of gripping arms 73 and 74 are provided on the frame 72. The frame 72 and the pair of gripping arms 73 and 74 constitute a gripping arm mechanism that grips the outer periphery of the disk 15.The pair of gripping arms 73 and 74 each have their respective tip ends 73a.
, 74a engage with the outer periphery of the disk 15. The spindle 71 is also movable in its axial or longitudinal direction and acts as a gripping rod for gripping the outer periphery of the disk in cooperation with a pair of gripping arms 73, 74. A gripping block 71a forming a part of the spindle is provided at the left end of the spindle 71, and the spindle 71 engages with the outer periphery of the disk 15 with this gripping block 71a. The pair of gripping arms 73 and 74 are symmetrical with respect to the longitudinal direction of the spindle 71, which acts as a gripping rod, and are arranged in two non-parallel directions (arrow A in FIG.
It is movable in the direction indicated by B).

A gripping block 71 provided on the left M portion of the spindle 71
a has rack portions 71a on both sides in the direction of movement.
is formed. On the other hand, the pair of gripping arms 73 and 74 are also formed with rack portions 73b and 74b, respectively, and a gear 75a is provided to mesh with the rack portions 71b and 73b. A gear 75b is provided so as to mesh with the rack portion 74b of each of these rack portions 71b, 73b, 74.
b and the gears 75a and 75b constitute a drive mechanism that moves the spindle 71 as a gripping rod and the pair of gripping arms 73 and 74 in opposite directions and synchronously. Spindle 71 and gripping arm pair 73.7
Although various other configurations are conceivable as the drive mechanism for moving the 4 and 4 in synchronization, by making the drive mechanism a simple configuration such as a gear and a rack part as described above, It has become easier to reduce costs.

Here, the tip of the spindle 71 serving as the gripping rod, that is, the engagement point of the gripping block 71a with the disk 15 is defined as the first disk engagement point, and the engagement of the tip portions 73a and 74a of the pair of gripping arms 73 and 74 with the disk 15 is defined as the first disk engagement point. If the engagement points are the second and third disk engagement points, respectively, then the first. The distance between the second disc engagement points (La) is equal to the distance 2 lb between the 12th and third disc engagement points, and the distance between the 1st and 3rd disc engagement points = La is equal to the distance between the 12th and 3rd disc engagement points.
A straight line connecting the second and third disc engagement points forms an acute isosceles triangle. The direction of movement of the pair of gripping arms 73 and 74 (directions indicated by arrows A and B in FIG. 5) is between the center of this acute isosceles triangle and the second. It is arranged to be substantially parallel to a straight line connecting the third disc engagement point. That is, the above 1. The second and third disc engagement points are configured to move toward the center of the disc 15 being gripped.

A driving source for applying a driving force for gripping the disk to the gripping arm mechanism including the gripping arm pair 73 and 74 will be described.

As shown in FIGS. 7 and 8, a motor 77 is fixed to the movable chassis 64 in front of a spindle 71. As shown in FIGS. The output shaft of the motor 77 is the spindle 7.
It is arranged parallel to 1. spindle 71
A screw shaft 78 extending parallel to the spindle is rotatably mounted between the motor 77 and the spindle, and a gear 78a fitted to the tip of the screw shaft is connected to the output shaft of the motor 77. It meshes with the fitted gear 77a. Note that the screw shaft 78 is provided with a screw portion 78b only in its central portion. A movable bracket 79 is slidably attached to a smooth portion of the screw shaft 78 other than the screw portion 78b. A projecting portion 79a is formed on the movable bracket 79, and the movable bracket 79 is connected to the right end of the spindle 71 at the projecting portion 79a. A slider 81 is screwed into the screw portion 78b of the screw shaft 78, and is movable only in the axial direction of the screw shaft. A pair of coil springs 82a and 82b are provided between the movable bracket 79 and the slider 81, and each is fitted onto the screw shaft 78. In this configuration, the spindle 7 is rotated by rotating the motor 77 in the forward and reverse directions.
1 is gears 77a, 78a, screw shaft 78,
Slider 81. Coil spring 82a.

82b and movable bracket 79 in order to reciprocate in the axial direction. Therefore gripping arm pair 73.7
The disk 15 is gripped and released by the gripping arm mechanism including the gripping arm mechanism 4. Note that the coil spring 82a acts as a bias scar applying means for applying a bias scar to the slider according to the movement of the slider 81 after the gripping arm mechanism grips the disk 15.

The above-described motor 77, gear 77a, screw shaft 78, gear 78a, movable bracket 79, slider 81, and coil springs 82a, 82b drive the gripping arm mechanism including the gripping arm pair 73° 74. A driving source for applying force is configured.

On the other hand, a photosensor 84 is provided near the screw 1 shift 78 as a detection means for detecting movement of the slider 81 after the gripping arm mechanism grips the disk 15. The above detection is performed by moving the light shielding plate 81a formed on the slider 81 within the detection gap provided on the photosensor 84, and a signal for stopping the 7'7 is emitted from the photosensor. .

The screw 1 shift 78, slider 81, coil spring 82a, and photosensor 84 constitute a stopping means that stops the drive source including the motor 77 when the gripping arm mechanism grips the disk 15. ing. Note that, apart from the photosensor 84, this stopping means is configured as a part of the driving source, but the stopping means may be provided separately from the driving source. however,
In this case, the gripping arm lJ! The structure includes a slider 81 and a coil spring 82a as a pie spacing member.
It is necessary to be able to apply driving force to the drive source via the drive source.

The story goes back and forth, but for example, as shown in FIG. When the pair of gripping arms 73 and 74 grip the disk 15, the outer edges of the long holes 73d and 74 (I abut against the bottle 72a). The gripping operation of the pair of gripping arms is regulated.
2a serves as a guide for the pair of gripping arms 73, 74, and
It acts as a regulating means for regulating the grasping operation of the grasping arm mechanism including the grasping arm pair 73, 74 in the disk grasping state.

Next, a drive source that applies rotational driving force to the spindle 71 and, therefore, to the above-mentioned gripping arm mechanism will be explained.

As shown in Fig. 7 and Fig. 8, the split shield 2
．． A holding member 87 that holds a motor 86 is provided on the movable shaft 11-shallow 4 consisting of 63. The holding member 87 is swingable around the spindle 71. The motor 86 is arranged such that its output shaft intersects the spindle 71. A small spindle 88 extending parallel to the spindle 71 is rotatably provided on the holding member 87. An A-11 wheel 8F3a is fitted to one end of the small spindle 88, in this case the right end, and the A-11 wheel 8F3a is a worm fixed to the output shaft of the motor 86 via a coupler 86a. A gear 88b is fixed to the other end of the small spindle 88, and this gear meshes with a gear 71b fitted near the tip of the spindle 71.

The above-mentioned t-tai 86, Kabra 86a, and Warm 8
6b, small spindle 88, and worm wheel 88a
and gears 88b and 71b, the spindle 7
Accordingly, 1 comprises a drive source that applies rotational driving force to the gripping arm mechanism. .

On the other hand, a projecting portion 72C (shown in the eighth figure) is provided at the right end portion of the frame 72, which is a part of the gripping arm m structure. On the other hand, as shown in FIG.
- The top 3 has a stopper 90 corresponding to the projecting portion 7'2c.
is provided. Further, a coil spring 91 that engages with the protruding portion 72G is fitted onto the stopper 90. When the gripping arm mechanism is rotated by the drive source and reaches a predetermined rotational position U, the overhanging portion 72C, the stopper 90, and the coil spring 1 act as regulating means for restricting the rotation of the gripping arm mechanism. It is configured.

The holding member 87 holding the motor 86 is caused to swing by the reaction force of the rotational driving force generated when the rotation of the gripping arm mechanism is restricted by the restriction means.

On the other hand, near the swinging end of the holding member 87, a photosensor 93 is provided as a detection means for detecting that the holding member swings. The above detection is performed by the light shielding plate 87a fixed to the swinging end of the holding member 87 moving within the detection gap formed in the photosensor 93, and a signal for stopping the motor 86 is sent to the photosensor. emanates from. A pin 87b is protruded from the light shielding plate 87a, and a rotatable member 95 is fixed to the pin. Rotatable 95 is movable 1? - It is inserted into a guide portion 3a formed in the divided chassis 63 that forms a part of the white 4, and reciprocates within this guide portion 3a as the holding member 87 swings.

A pair of springs 96a are provided at both ends of the rotatable member 95.
, 9.6b are provided. 3. These coil springs 96a and 96b act as a bias squirting means for imparting a bias spacing to the holding member 87 when it swings.

When the spindle 71 and therefore the first gripping arm mechanism are rotated by the photosensor 93 and the coil springs 96a and 96b serving as the bias applying means, the data sheet 15 gripped by the gripping arm mechanism is reversed. A stopping means is configured to stop the drive source including the motor 86.

In addition, the above-mentioned movable seat plate 4, etc., the spindle 71, and the gripping arm llll including the gripping arm 3 = t73, 74.
1IIJ, a drive mechanism that includes gears 75a and 75b and synchronizes the operation of the spindle and the pair of gripping arms, a drive source that includes a motor 77 that applies driving force to the gripping arm mechanism for gripping the disk, and A regulating means for regulating the gripping operation of the arm mechanism in the disc gripping state (elongated holes 73d and 746 provided in the gripping arm pair 73°74)
etc.), a stopping means for stopping the driving source including the motor 77 when the gripping arm mechanism grips the disk, which is comprised of a photosensor 84 etc. as a detection means, and a stop means for stopping the drive source including the motor 77, which includes a motor 86 and the spindle 71, and therefore the a drive source that applies rotational driving force to the gripping arm mechanism; and a regulating means that restricts rotation of the gripping arm mechanism when the gripping arm mechanism is rotated by the drive source and reaches a predetermined rotational position. (consisting of a stopper 90 and a coil spring 91), a holding member 87 holding a motor 86, and a flap 2I]
A disk storage section is installed in the base 40 by a stopping means that includes a sensor 93 and stops the drive source that includes the motor 86 when the disk gripped by the gripping arm mechanism is reversed due to the rotation of the gripping arm mbM. A disk gripping means is configured to be movable in a direction perpendicular to the direction in which the 16 disks are arranged, and to grip and invert a selected disk.

Here, as is clear from FIG. 8, the pair of gripping arms 73
．． The central axis of rotation of the spindle 74, ie, the center of the axis of the spindle 71, forms an acute angle θa with respect to the moving direction of the disk holding means, in this case the left-right direction, the direction of the arrow X, and the opposite direction thereof. This tilting of the center axis of rotation of the pair of gripping arms 73, 74 with respect to the direction of movement of the disk gripping means is related to the fact that the disk carrying unit 17 is formed as described above. By forming the disk holding plate 17 in the above-described shape, it is easy to take the disc in and out through the window provided on the front left side of the housing 2 for taking in and taking out the disc.

Further, as is clear from FIG. 8, a detection switch 99 is provided at the tip 73a of the gripping arm 73, which acts as a detection means for detecting that the disc gripping means has gripped the selected disc. The detection switch 99 engages with the outer periphery of the disk when the disk is gripped.

Next, a position detection means for detecting that the base 40 has reached a position where the disk gripping means can grip any disk in the disk storage portion 16 and stopping the base will be described.

As shown in FIGS. 2 and 6, a plurality of slits are formed at the right end of the rail 49 that guides the counterweight 50, and an address plate 100 is attached that indicates the absolute address of the base 40 relative to the housing 2 in 6 bits. It is being On the other hand, as shown in FIG. 5, a 6-bit 7-bit sensor 101 is provided at the right end of the base 4'0 in correspondence with the address plate 100. Also, the fourth
As shown in the figure, at the front end of each disk holding unit 17, 4-bit slits L! are arranged along the moving direction of the base 40, that is, the vertical direction. ? ! 102 is provided integrally with each disk carrying unit 17. At the left end of the base 40, a 4-bit photosensor 103 serving as a detection means is provided corresponding to the slit group 102. These address plates 1001 fx'l-sensor 101
, by the slit group 102 and the photosensor 103,
A position detecting means is provided for detecting that the base 40 has reached a position where the disc gripping means can grip any disc in the disc storage section 16 and stopping the base.

As shown in FIGS. 2 and 5, the base 40 extends parallel to the guide shaft 61 and has slits 1 at both ends.
An address plate 105 on which numbers 05a and 105b are formed is attached. On the other hand, as is particularly clear in FIG.
6 is provided. The address plate 105 and the photosensor 106 constitute a position detecting means for detecting that the movable chassis 64, and therefore the disc gripping means, have reached a predetermined position and stopping the disc gripping means.

A disk presence/absence detection means for detecting the presence or absence of a disk at each disk storage position of the disk storage section 16 will be explained.

As shown in FIG. 4, each disk carrying unit 17
A moving member 108 is provided at the front end of the upper surface. A bin portion 108a is provided approximately at the center of the movable member 108, and when the bin portion engages with a support protrusion 1.7a formed on the disk carrying unit 17, the movable member moves in the disk arrangement direction (vertical direction). ) can swing freely.

When the disk 15 is positioned and supported on the disk carrying unit 17, a portion of the lower surface of the disk engages with the rear end portion 108b of the moving member 108, thereby causing the @@ portion 108C of the moving member 108 to move upward. It is designed to oscillate. In addition, the movable member 108 is a bottle portion 108.
The front end is formed to be heavier than the rear end with respect to center a, so that the disc 1 is
5 is removed, the front end 10 of the moving member 108
8C is configured to swing downward. The state in which the front end 108C swings downward is referred to as a first position of the moving member 108, and the state in which the front end 108C swings upward is referred to as a second position of the moving member. 11゛That is, the moving member 108 moves according to the presence or absence of the first disk.
It moves between the first position and the i2 position.

Aluminum foil for reflecting light is pasted on the surface of the front end 108C of the moving member 108. As shown in FIG. 5, the base 40 is provided with two pairs of small photosensors 109a and 109b near the photosensor 103. These photosensors 109a and 109b
is for detecting whether the moving member 108 is in the first position or the second position. Note that the detection by the photosensors 109a and 109b is performed through a small window 17c formed in each disk carrying unit 17. The photosensor 109a will be referred to as a first detection sensor, and the photosensor 109b will be referred to as a second detection sensor.

The above-mentioned moving member 108 and photosensors 109a, 1
09h constitutes a disk presence/absence detection means for detecting the presence or absence of a disk at each disk storage position of the disk storage section 16.

Further, the disk presence/absence detecting means, the base 40, the disk gripping means described in -1- including the movable chassis 64, the position detecting means including the slit group 102, the counterweight 50, the rail 49, and the counter The above-mentioned close fitting means for tightly tightening the weight to the rail 49 and the guide 1/
The shafts 36 and 37 and related peripheral small members constitute a disc ejecting and transporting mechanism that sequentially selects any disc in the disc storage section 16 and transports it to the performance position, that is, onto the turntable 31. ing.

Here, the pair of photosens '+109a and 109
b will be explained in detail.

First, the first detection sensor is the photosensor 109a of -C.
In this case, when the base 40 reaches a position where the disc gripping means can grip the disc, the moving member 108 moves to the first position.
This is for detecting whether it is in the first position or the second position. On the other hand, the photosensor 109b is connected to the base 40
is a predetermined distance from the position where the disc gripping means can grip the disc.
This is for detecting whether the head 08 is in the first position or the second position, and is provided shifted to one side by, for example, 3 mm or more with respect to the foot 11-sensor 109a.

As shown in FIG. 6, a placket 110 is screwed to the left side surface of the upper end of the rail 49. As shown in FIG. As is particularly clear from FIG. 10(b), the lock screw 110a is fitted into the bracket 110, and the retaining ring 110 is fitted into the bracket 110.
Removal is prevented by b. lock screw 110
a is for locking the base 40 to the housing 2 by tightening it and screwing it into the threaded part 40b protruding from the base 40. A coil spring 110C is inserted into the bracket 110 for applying a bias tension to the bracket 110.A detection switch 111
is fixed with a screw. This detection switch 111 is arranged so that when the lock screw 110a is tightened and the base 40 is locked, a part of the lock screw engages with the armature 111a of the detection switch.

When the lock screw 110a is tightened and the base 40 is locked, the detection switch 111 is activated to prevent any operation of the disc playing device.

Next, a description will be given of the clamping mechanism that clamps the disk conveyed onto the turntable 31 by the disk ejecting and conveying mechanism.

As shown in FIG. 2, a placket 112 is located on the underbase 11 and behind the turntable 31.
is fixed. As shown in FIG. 9(a), a support member 113 is swingably attached to the upper end of the bracket 112 via a pin 113a.

A pressing member 114 that cooperates with the turntable 31 to perform a disk clamping action is rotatably provided at one swinging end of the support member 113. Incidentally, the disk is clamped by the suppressing member 1171 being attracted to the turntable 31 by magnetic force. Further, the position (2) indicated by the two-dot chain line in FIG. 9(a) is referred to as the non-clamping position of the support member 113, and the position indicated by the solid line in FIG. 9(a) is the clamping position of the support member 113. It is called position. The swing angle θb of the support member 113 is, for example, 110°. .

A geared motor 115 is fixed to the right end of the bracket 112. Output shaft 115a of geared motor 115
A first louver member 116 is fitted into the holder. A second lever member 117 is rotatably attached to one end of the rotating end of the first lever member 116 via a pin 117a.

The sacrum end of the second lever member 117 is pivotally connected to the other swinging end of the support member 113 via a pin 117b. The bracket 112 is provided with an auxiliary lever member 118 that rotates together with the first lever member 116, and furthermore, completion of disk clamping can be detected by detecting the rotation angle of the auxiliary lever member. Know Detection Switch 11
9 is provided.

The above geared motor 115 and the first lever member 116
and the second lever member 117, the support member 113
A driving means for driving is configured. Furthermore, by the driving means, the supporting member 113, and the pressing member 114,
A clamp mechanism forming a disk clamp is configured.

FIG. 10 (ω shows details of the slit group 102 formed in each disk carrying unit 17).

As shown in FIG. 10(a), each disk carrying unit 17 has four slits 102a.

102b, 102c and 102d are formed. The position of the base 40 with respect to each disk carrying unit 17 is detected by four 7i couplers 103a, 103b, 103C and 103d installed in a straight line on the photo sensor 103.

Here, the address board 100. Photosensors 101 and 1
The adjustment method of 03 will be explained below.

It should be noted that each disk carrying unit 17 that stores and carries disks has a total of 60 disks.

First, the horizontality of the 4-bit photosensor 103 is checked, and the 6-bit photosensor 101 is adjusted horizontally. Next, the center @ of the photosensor 103 (indicated by 1030 in FIG. 10 fa) and the center Ij 11102e of the slit 102b formed in the 30th disk holding unit 17 (shown in FIG. 10 (a)). In this state, the address plate 100 is moved up and down to align the center axis of the 6-bit address plate 101 with the center axis of the lower bit slit of the address plate. At this time, the address plate 100 is appropriately tilted to adjust the horizontal position of the address plate and the photosensor 101. Next, the center axis 103e of the photosensor 103 is aligned with the center 111102e of the slit 102b of the second and 60th disk holding unit 17, and at this time, the center axis of the 6-pit photosensor 101 is aligned Check whether it matches the slit center axis of the lower bit of the plate 100. After this, 4-bit photosensor 1
03 to match the slit of the disk carrying unit 17. The adjustment is thus completed.

Next, the operation of the disc performance with the above-mentioned configuration will be explained in the 11th section.
The performance procedure will be briefly explained with reference to the figures and FIG. 12.

Immediately after power is applied to the device, the control circuit 120 (shown in Figure 11)
determines that the mechanical section is not in the transportation preparation state or the locked state (as described in @), and when the keyboard 7a of the music selection section 7 is operated to specify the disc to be played,
A driving voltage is supplied to the motor 44, and the motor starts rotating. J. The hand base 40 moves to a position where the disc gripping means can grip the designated disc. At this time, the control circuit 120 uses the photosensor 101 to read the absolute address on the address plate 100, and also uses the photosensor 103 to read the slit group 102 of the disk carrying unit 17. Note that the transportation preparation state means that the clamper consisting of the pressing member 114 and the supporting member 113 presses the disc onto the turntable and the pair of gripping arms 73
．． 74 grips the disk, that is, a state in which ON signals are obtained from the photosensor 84 and the detection switches 99 and 119.

The operation of the slot 40 accompanying the reading of the slit group 102 by the photosensor 103 will be described in detail.

FIG. 10 (assuming that among the disk carrying units 17 drawn in three stages in al, the disk carrying unit 17 that carries the designated disk is the one in the center) 7Il~Photocoupler of sensor 103 103a
, 103b coincide with the slits 102a, 102b and an ON signal is obtained from the photocouplers 103a, 1031), the drive voltage supply to the motor 44 is cut off and the base 40 is stopped.

When the base 40 stops at a position where the disc gripping means can grip the disc, the control circuit 120 drives the motor 68, and the disc gripping means including the movable shutter 4 moves toward the disc! ! 71. (1-1) that the disk gripping means has moved and reached the disk gripping position? Once confirmed by the sensor 106, the motor 68, and therefore the disk gripping means, is stopped. Next, the photo sensor 109a
(shown in FIG. 5), the presence or absence of a disc is detected. When the presence of the disk is confirmed, the motor 77 is driven,
The disk is gripped at three points by a spindle 71, which is a gripping rod, and a pair of gripping arms 73, 74. When it is detected by the Fu Ah lens 84 and the nine detection switches that the disk has been gripped, the motor 44 is rotated again until an ON signal is obtained from the photocazola 103b, 103G, and the base 40 is moved upward by about 3 mm, for example. Move. By this 3mm movement, the positioning protrusion 1 fits into the disc center hole and positions the disc.
The fitted state between 8d and the disk center hole is released. Next, the motor 68 is reversely rotated, and the disc gripping means moves to the right while gripping the disc.

When the photo sensor 106 confirms that the disc gripping means has moved a predetermined distance to the right and the gripped disc has reached directly above the turntable, the motor 68 is stopped.

After that, the base 40 is moved downward and the disc is placed on the turnday blue. If so, the motor 86 is driven and the disk is reversed.

Here, the disc reversing operation will be described in detail.

If the selected song is on the 8th side of the disc, the control circuit 12
First, check whether the base 40 is on one side or below the position corresponding to the 50th disk from the top.
Ru. If the base 40 is located below the position corresponding to the 50th disc from the top, the base 40 is raised to the position of the 49th disc from the top. after that. motor 86
is driven, the disc is reversed, and at the same time the base is lowered. Note that the completion of the disk reversal is A.
is detected by the sensor 93.

When the disc is placed on the turntable, the geared motor 115 rotates and clamps the disc h''.
be done. When the detection switch 119 detects that the disc is clamped, the disc gripping state by the disc gripping means is released. In this way, it becomes possible to play, and the spindle motor 32 and optical pickup 33
etc., and the performance begins.

When the performance is finished, the disc is stored in its original storage position by following the above process in reverse.

Thereafter, the above operation is repeated according to the designated number of songs.

Effects As described in detail above, in the disc playing device according to the present invention, the disc storage section (16) that sequentially arranges and stores a plurality of discs is separated from a large number of disc carrying units (17) stacked on top of each other in the disc arrangement direction. 1. By doing so, the molding of the disc storage section becomes simple, and the equipment for molding the disc carrying unit can also be made small, resulting in lower costs. Further, by appropriately adding a disk 1u holding unit, the disk storage capacity m can be increased.

Further, since the disc playing device according to the present invention is provided with a suppressing means for pressing the above-mentioned discs 1 to 1 in the stacking direction, the disc storage section is deformed and shaped in the disc arrangement direction due to thermal expansion or the like. There is no such thing.

[Brief explanation of drawings]

FIG. 1 is a front view of a disc playing device according to the present invention, and FIG.
The figure is an overall perspective view of the internal structure of the disc playing device.
5 and 6 are perspective views showing the base and its peripheral members, and FIG. 7 is a detailed perspective view of the disk gripping means for gripping the disk.
FIG. 8 is a plan view including a partial cross section of the disk clamping means, FIG. FIG. 10 is a diagram for explaining the slits and detection sensors formed in the disk carriers 1 to 1 which are the constituent members of the disk storage section.
b) is a partial hI detailed diagram of the internal structure, FIG. 11 is a diagram showing the configuration of the drive control system in the disc playing device, and FIG. 12 explains the operation of the disc playing device. Flowch I to help you! -1-. Explanation of symbols of main parts 1... Disc playing device 2... Housing 3... Door 3a.
...Glass plate 5...Operation unit 6...
...Adjustment section 7..Track selection section 8..Coin receiving section 10.....Casters 11.....Under base 12.....Frame 15. ... Disk 16 ... Disk storage section 17 ... Disc carrying unit 17a ...
...Support protrusion 17c...Small window 18...
・Plate member 18c...Semicircular disk storage portion 18d...
...Positioning protrusion 18e...Vertex portion 20.21.22...Shaft 20a...
...First threaded part 20b...Second threaded part 24...Plate 24a...Retaining ring 25...To presser play 1 26... ...nut 26a ... washer 27
．． 416. 57.82a, 82b, 91°, 95
a, 96t)...Two coil springs...
...Upper base 29a, 43a, 55a, 59a, 68a. 110.112...Bracket 29b, 43
b, 8B...Small spindle 29c, 4.
3c, 43d, 4. /1. b, 66a. 66 b...Toothed belt wheel 31...Turntable 32...Spindle motor 33...Optical pickup 36.37.61...・Gaidon Yaft 40・・
...Base 40a...Cylindrical portions 41a, 41b, '56.59----0-ra 41c...Lever 44.68, 77.86... ...Motor 44a...
...Fixing plate 46.47.67...4 toothed belts...
...Rail 50...Counterweight 51.52...Pulley 53...Wire 55...Swinging member 6
2.63... Division C17-C63a...
・Guide part 64...Movable chassis 66C, 88a...Worm wheel 68b
, 86b... Worm 71...°... Spindle 71a... Gripping block 71b, 75a, 75b, 7.7a, 78a
. 88b... Gear 72... Frame 72a, 8.7b, 113a, 117a
----Bin 72C, 79a... Overhanging part 73.74... Gripping arm 73a, 74a... Tip part 73b, 74b... Rack parts 7'3d, 74. (1... Long hole 78...
・Slurry 1-Shut 78b... Screw part 79... Movable bracket 81... Slider 81a, 87a... Light shielding plate 84, 93, 101, 103,106°109a, 1
09b...Photo sensor 86a,..."...
・Cobra 87...Holding member 90...Stopper 95...Movable piece 99.111,119...Detection switch ioo
, 105...Address plate 102...Slit groups 102a, 102b, 102c, 102d. 105a, 105b...Slit 103a,
103b, 103C, 103d...) A to coupler 103 e... Central axis 108... Moving part 4A 108a... Bin part i 08b...・1 and end 108G...Front end 81 (110a...Lock screw 113...Support part 114...Press member 115...Geared 115a...Output shaft 116...First lever member 117...Second lever member 118...Auxiliary lever member 120... ...One person for control circuit output Pioneer Co., Ltd. agent Patent attorney Motohiko Fujimura Figure 1 tu /() Bottom 10 Father C (1) Soldier 10 [2J (b) Blind/no 0b

Claims (1)

[Claims] The disc storage unit includes a disc storage unit capable of sequentially arranging and storing a plurality of discs, a disc playing means, and a disc ejecting and transporting mechanism that sequentially selects arbitrary discs in the disc storage unit and transports them to a playing position. A large number of discs stacked on top of each other in the disc arrangement direction]! A disc playing device comprising a holding unit and a pressing means for pressing the disc holding unit in a stacking direction.