JPS60256959A - Disc playing device - Google Patents

Abstract

PURPOSE:To grip surely a disc by storing discs with a lot of stacked units and forming incorporatedly a lot of slit groups provided corresponding to the stored position with the units to reduce the cost and to increase the storage amount. CONSTITUTION:The disc carrying units 17 storing discs are fitted to shafts 20, 21, 22 and a lot of them are stacked, and since the device shaping the units is made small in size, the cost is reduced, the number of units is increased to increase the number of storage amounts. A slit group corresponding to the disc storage position and a means for detecting it are provided and since the slit group 102 is provided integrally with the units 17, even when the storage section 16 is expanded due to thermal expansion, the slit is made coincident with the disc storage position. Thus, the disc grip means is gripped to stop the base 40 moved vertically to the storage position and the disc is gripped surely.

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.

Blue Technology Various disc playing devices that can play a plurality of discs in succession have already been proposed and used, but basically they include a disc storage unit that stores and arranges a plurality of discs in sequence at a predetermined pitch; It is equipped with a disc playing means including a turntable, a pickup, etc., and a disc ejecting and transporting mechanism that sequentially selects and grasps 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 accommodating portion is entirely integrally molded from 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 V-disks that can be accommodated in the integrally molded disk storage section is limited.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and its purpose is to provide a disc that is inexpensive, can appropriately increase the amount of discs stored, and can be gripped reliably by a disc gripping means. It is to acquire and provide musical performance equipment.

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 ejecting and conveying mechanism includes a base movable along the disk arrangement direction of the disk storage section, and a base movable in a direction substantially perpendicular to the disk arrangement direction to grip the selected disk. and a position detection means for detecting that the base has reached a position where the disc gripping means can grip the arbitrary disk and stopping the base, the position detection means includes a plurality of slit groups provided along the moving direction of the base in correspondence with the disk storage positions of the disk storage section, and a detection means that moves together with the base to detect the slit groups,
The disk storage unit includes a large number of disk holding units stacked on each other in the disk arrangement direction, and a pressing means for pressing the disk holding units in the stacking direction, and the slit group is integrally provided in the disk holding unit. It is characterized by

Embodiments Hereinafter, a disc playing device as an embodiment of the present invention will be described 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 a window is provided on the front side of the housing, which is biased to the left side, for inserting and removing a disk into a disk storage section, which will be described later. ing. 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 unit 5 includes an adjustment unit 6 for adjusting the volume, etc.
and a music selection section 7 including a keyboard 7a for selecting music.
A coin receiving section 8 for receiving coins is arranged on the left side of the adjustment section and music selection section.

Furthermore, casters 10 are provided on the bottom surface of the housing 2 to facilitate 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, behind the disk loading/unloading window, that is, on the rear left side of the housing, a disk storage section 16 is provided in which a plurality of disks 15 can be sequentially arranged and stored at a predetermined pitch. In this case, the plurality of disks 15 are arranged and housed in the vertical direction (in the direction of arrow Zh and in 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.
The plate member 1 has two sides 18a and 1811 that are perpendicular to each other and has a semicircular disk storage portion 18C on its main surface.
8, and each disk 15 is positioned and housed by fitting a disk center hole into a positioning protrusion 18d protruding from the main surface of the plate-like member. In order to reduce the weight of this plate member 18, the vertex portions 18e of the two sides 18a and 18b are 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. Each disk carrying unit 17
A single shaft 20 is fitted in the vicinity of the vertices of the two sides 18a, 18b. Further, a pair of shafts 21 and 22 are fitted into each disk carrying unit 17 near the ends of two sides 18a and 18b, respectively.

As shown in FIG.
2 is fixed to the underbase 11 at its lower end. By each of these shifts 20.21 and 22,
A slip preventing means is configured to prevent each disk carrying unit 17 from slipping.

As shown in FIG. 4, each disk carrying unit 17
are stacked on a receiving plate 24 provided near the lower ends of the shafts 20, 21 and 22. This receiving plate 24 is fitted onto each shaft 20, 21, 22, and its downward movement is restricted by three retaining rings 24a. As shown in FIG. 3, a retaining plate 25 is provided on top of each stacked disk carrying unit 17, which fits over the shafts 20, 21, 22. For example, the upper end first threaded portion 20 of the shaft 20
A nut 26 is screwed into a.

Nuts 26 are similarly screwed into the upper ends of the shafts 21 and 22. Nut 26 and presser plate 2
A coil spring 27 is compressed between the coil spring 5 and the coil spring 27 via a washer 27a.

The plate 24, the presser plate 25, the nut 26, the coil spring 27, and peripheral small members related thereto constitute a pressing means for pressing each disk carrying unit 17 in the stacking direction. It should be noted that this suppressing means and the above-mentioned anti-slip 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 further above the presser plate 25 provided above each stacked disk carrying unit 17, and an upper base 29 is provided, for example, at the uppermost end of the shaft 20. Formed7.
; It is fixed to the second threaded portion 20b (shown in the third figure) with a nut 30.

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-leading disc player 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 any disk from among the plurality of disks 15 arranged and stored in the disk storage section 16 and conveys it to the performance position, that is, onto the turntable 31.

As shown in FIG. 2, a pair of guide shafts 36 and 37 are provided as guide members that extend along the disk arrangement direction of the disk storage section 16, that is, in the vertical direction, and have an underside at the lower end. It is fixed to the base 17. Also, both guide shafts 11 feet 36, 37
The upper end portion of is fixed to an upper base 29. A base 40 is movably attached to both guide shafts 36 and 37. Both guide shafts 36 and 37 extend 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 loading and unloading discs is provided. Fifth
As is clear from the figure, the base 40 is formed as a single straight bar as a whole. To describe in detail how the base 40 is attached to each of the guide shafts 36 and 37, the base is slidably and closely fitted onto the guide shaft 37 at a cylindrical portion 140a provided approximately at the center in the longitudinal direction of the base. and a pair of rollers 41a made of ball bearings etc. at the left end.
It is slidably engaged with the guide shaft 36 via 41b. [Of the pulled rollers, the front roller 41a is attached to the base 40 so as to be swingable in a plane perpendicular to the moving direction of the base (provided at the swinging end of the pulled lever 41C). This lever 41c is biased in a direction in which the roller 41a approaches the guide shaft 36 by a coil spring 41d.

As is particularly clear in Figure 6, underbase 1
A small spindle 43b is placed on the racket 43a via the racket 43a.
is rotatably provided, and a pair of toothed belt pulleys 43C and 3d are fitted to both ends of the small spindle, respectively. A fixing plate 4 is installed near the bracket 43a.
A motor 44 is fixedly installed via a motor 4a, and a toothed belt 4d is installed between a toothed belt pulley 44b fitted to the output shaft of the motor and a toothed belt pulley 43d.

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

As shown in FIGS. 2 and 6, a rail 49 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
pulleys 51 (one pair each installed 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 engagement with the rail 49, that is, the right end, and are spaced apart from each other in the direction of movement of the counterweight, and are swingable in the direction of movement of the counterweight. It is attached via a bracket 55a. A pair of rollers 56 that come into contact with the inner surface of the rail 49 are provided at the swinging end of each swinging member 55 . Further, a single coil spring 57 is provided between the pair of swinging members 55, and both swinging members 55 are biased toward each other by the coil spring. A roller 59 that contacts the inner surface of the rail 4Q is rotatably attached to the other end of the counterweight 50 that engages with the rail 49, that is, the left end via a bracket 59a.

The pair of swinging members 55 described above and -! The counterweight 50 is made up of the L roller 56, the coil spring 57, the opening 759, and the surrounding small members related thereto.
A close contact means is configured to bring the guide member into close contact with the rail 49, which is a guide member.

Here, the counterweight 50 is disposed biased to the right side of the front surface of the housing 2, and is configured to move near the front surface of the housing. By arranging the counterweight 50 in this way, the combined center of gravity of the counterweight and the base 40 can be brought to the front right part of the housing 2. Due to the interaction with the center of gravity position of the storage section 16, the overall weight balance of the disc 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, this guide shaft 61 has two split chassis 6.
A movable chassis 64 formed by connecting 2.63 to each other is slidably attached.

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 40, and a toothed belt 67 is provided on both toothed belt wheels.
has been erected. A motor 68 is fixed near the toothed belt wheel 66b on the right side via a bracket 68a, and a worm 68b fitted to the output shaft of the motor is formed integrally with the toothed belt wheel 66b. - is meshed with the wheel 66C. In other words, the movable chassis 64 is reciprocated 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 slider Shiro 4, which is made up of two divided Shirasu 1/- Shiro 2.63, so as to be rotatable about the shaft center. It is being A frame 72 bent into a substantially C-shape is fixed to the left end of the spindle 71 . The frame 72 is provided with a pair of gripping arms 73 and 74. These frames 7
2 and a pair of gripping arms 73, 74, the disc 15
A gripping arm mechanism is configured to grip the outer periphery of. Note that the pair of gripping arms 73 and 74 have respective tip portions 73a,
It engages with the outer periphery of the disk 15 at 7/4a. 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 that forms a part of the spindle is provided at the left end of the spindle 71.
engages with the outer periphery of the disk 15 at 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 movable in two mutually non-parallel directions (directions indicated by arrows A and B in FIG. 5).

A gripping block 71 provided at the left end of the spindle 71
A has rack parts 7 on both sides in the direction of movement thereof.
1a is formed. On the other hand, gripping arm pair 73.74
Also, rack portions 73b and 74b are formed, respectively. A gear 75a is provided so as to mesh with the rack portion 71b and the rack portion 73b, and a gear 75b is provided so as to mesh with the rack portion 71b and the rack portion 74b. These rack parts 71b, 73b, 74b and gears 75a and 75b' constitute a drive mechanism that moves the spindle 71 as a gripping rod and the gripping arm pair 73°74 in opposite directions and synchronously. has been done. Spindle 71 and gripping arm pair 73.7
Various other configurations are conceivable as the drive mechanism for moving the 4 and 4 in synchronization, but by making the drive 8Jt mechanism simple as described above, such as a gear and a rack part, It has become easier to reduce costs.

Here, the tip of the spindle 71 serving as the gripping rod 11, that is, the point of engagement with the disk 15 of the gripping block 71a 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. Second
Distance between disc engagement points: La is the first. The distance between the third disc engagement points is equal to 2Lb, and the distance between the third disc engagement points is equal to 2Lb. A straight line connecting the second and third disc engagement points forms an acute isosceles triangle. Gripping arm pair 73°7
4 (directions indicated by arrows A and B in FIG. 5) is between the center of this acute isosceles triangle and the second. Third
It is arranged to be approximately parallel to the straight line connecting the disk 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 provided between and the motor 77, and a gear 78a fitted to the tip of the screw shaft is fitted to the output shaft of the motor 77. The gear 778 is meshed with the gear 778. 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 this projecting portion 79'a. A slider 81 is attached to the screw portion 78b of the screw shaft 78.
are screwed together, and are 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, when the motor 77 rotates in the forward and reverse directions, the spindle 71 rotates between the gears 77a, 78a, the screw shaft 78, the 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 shaft 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 motor 77 is generated from the photosensor.

By the screw shaft 78, slider 81, coil spring 82a, and photosensor 84,
Stopping means is configured to stop the drive source including the motor 77 when the gripping arm mechanism grips the disk 15. Note that, apart from the photosensor 84, this stopping means is configured as a part of the drive source, but
The stopping means may be provided separately from the drive source. However, in this case, it is necessary for the above-mentioned grip arm mechanism to be provided with a driving force from the above-mentioned drive source via the slider 81 and the coil swing tongue 82a serving as a bias applying means.

The story goes back and forth, but for example, as shown in FIG. 8, the pair of gripping arms 73 and 74 have elongated holes 73d and 74d formed in the pair of gripping arms, respectively, and slide into a bin 72a protruding from the frame 72. When the pair of gripping arms 73 and 74 grips the disk 15, the outer edges of the long holes 73d and 74d abut against the bottle 72a, and the gripping arms are moved. The pair's gripping motions are regulated. That is, the long holes 73d and 74d and the pin 7
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 FIGS. 7 and 8, the split chassis 62
．． A holding member 87 holding a motor 86 is provided on the movable chassis 64 made up of the motor 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. The spindle 7 is attached to the holding member 87.
A small spindle 88 extending parallel to 1 is rotatably attached. A worm wheel 88a is fitted to one end of the small spindle 88, in this case the right end, and the worm wheel meshes with a worm 86b fixed to the output shaft of the motor 86 via a coupler 86a. . Further, 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 motor 86, coupler 86a, and worm 86
b, the small spindle 88, the worm wheel 88a, and the gears 88b and 71b constitute a drive source that applies rotational driving force to the spindle 71 and, therefore, to the gripping arm mechanism.

On the other hand, a projecting portion 72C (shown in the eighth figure) is provided at the fourth right end of the frame 72, which is a part of the gripping arm mechanism. On the other hand, as shown in FIG. 7, the split chassis 63 is provided with a stopper 90 corresponding to the overhang 72C. Also, this stopper 90 has an overhanging portion 7.
A coil spring 91 that engages with 2C is fitted onto the outside. These overhang portion 72C1 stopper 90 and coil spring 91 constitute a regulating means for regulating the rotation of the gripping arm mechanism when the gripping arm mechanism is rotated by the drive source and reaches a predetermined rotational position. There is.

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, a photosensor 93 serving as a detection means for detecting that the holding member 87 has oscillated is provided near the swinging end of the holding member 87. The above-mentioned detection is performed by moving the light shielding plate 87a fixed to the swinging end of the holding member 87 within the detection gap formed in the photo sensor 93, and a signal to stop the motor 86 is sent to the photo sensor. emanates from. This light shielding plate 87a includes a bottle 87.
A movable piece 95 is fixed to the bottle. The movable piece 95 is inserted into a guide portion 3a formed in the divided chassis 63 that forms a part of the movable chassis 64, and reciprocates within this guide portion 3a as the holding member 87 swings. .

A pair of coil springs 96a are provided at both ends of the movable piece 95.
, 96b are provided. These coil springs 9
6a and 96b act as a bias scar applying means for applying a bias scar to the holding member 87 when the holding member 87 swings.

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

In addition, the above-mentioned movable chassis 64 and spindle 71
and a gripping arm mechanism including a gripping arm pair 73.74;
a drive mechanism that includes gears 75a and 75b and synchronizes the operations 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; A regulating means (gripping arm pair 7
Consisting of elongated holes 73d, 74d, etc. provided at 3°74)
and stop means, which includes a photosensor 84 serving as a detection means, and stops the drive source including the motor 77 when the gripping arm mechanism grips a disk; A drive source that applies rotational driving force, and a regulating means (stopper 9
0 and a coil spring 91), and a motor 8
a holding member 87 that holds a holding member 87 that holds a photo sensor 93, and a stopping means that stops the drive source that includes a motor 86 when the disk gripped by the gripping arm mechanism rotates and the disk gripped by the gripping arm mechanism is reversed. This constitutes a disk gripping means that is movably provided on the base 40 in a direction perpendicular to the disk arrangement direction of the disk storage section 16 and that grips and inverts a selected disk.

Here, as is clear from FIG. 8, the pair of gripping arms 73
．． 74, that is, the axial center of the spindle 71, is in the moving direction of the disk gripping means, in this case the left-right direction (
It forms an acute angle θa with respect to the arrow X direction and the opposite direction). 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 carrying unit 17 in the above-described shape, it is easy to take in and take out the disk through the window provided on the front left side of the housing 2 for taking in and out the disk.

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

Next, the disc gripping means holds the disc storage part 16.
The base 40 is placed in a position where it can grip any disc in the
The position detecting means for detecting that the base has been reached and stopping the base will be explained.

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 photosensor 101 is provided at the right end of the base 40 in correspondence with the address plate 100. Further, as shown in FIG. 4, a group of 4-bit slits 102 arranged along the moving direction of the base 40, that is, the vertical direction, is integrally formed at the front end of each disk carrying unit 17. It is set up as follows. 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 plate 100, photosensor 101, slit group 102, and photosensor 103 detect that the base 40 has reached a position where the disk gripping means can grip any disk pulled into the disk storage section 16. A position detecting means for stopping the base is constructed.

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. 7, a photosensor 106 is provided on the movable chassis 64. The address plate 1'05 and the photosensor 106 constitute a position detection means for detecting that the movable chassis 64, and thus the disc gripping means, has reached a predetermined position and stopping the disc gripping means. There is.

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 described.

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 part 108a is provided approximately at the center of the moving member 108, and when the bin part engages with a support protrusion 17a formed on the disk carrying unit 17, the moving member moves in the disk arrangement direction (vertical direction). It can be swung 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 108b of the moving member 108, thereby causing the front end 108C of the moving member 108 to move upward. It is designed to oscillate. Furthermore, the front end of the moving member 108 is heavier than the rear end with the bin portion 108a as the center, so that when the disk 15 is removed from the disk carrying unit 17, the front end 108C of the moving member 108
is made to swing downward. This front end i'
The state in which o and sc swing downward is referred to as the first position of the movable member 108, and the state in which the front end portion 108C swings upward is referred to as the second position of the movable member. That is, the moving unit 1, 110.8 moves between the first position and the second position depending on the presence or absence of a disc.

Aluminum foil is pasted on the surface of the front end 108c of the moving member 108 to reflect light. As shown in FIG. 5, the base 40 is provided with a pair of small photosensors 109a and 109b near the photosensor 103. These photosensors 109a and 109b are 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 unit 0108 and photosensors 109a, 1
09b 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 detection means, the base 40, the disk gripping means including the movable chassis 64, the position detection means including the slit group 1'02, the counterweight 50, the rail 49, and the counterweight By means of the above-mentioned close contact means for bringing the discs into close contact with the four rails, the guide shafts 36' and 37, and surrounding small members related to these, any discs to be pulled into the disc storage section 16 are sequentially selected and placed in the playing position, That is, a disk ejecting and conveying mechanism for conveying the disk onto the turntable 31 is configured.

Here, the pair of seven sensors 109a and 109b
I will explain in detail.

First, the photosensor 109a as a first detection sensor detects whether the moving member 108 is in the first position or the second position when the base 40 reaches a position where the disc gripping means can grip the disc. It is for detection. On the other hand, the photo sensor 109b is activated by the moving member 109b when the base 40 moves upward by a predetermined distance from the position where the disc gripping means can grip the disc.
This is for detecting whether the A sensor 109a is at the first position or the second position, and is provided upwardly shifted by, for example, 3 mm or more with respect to the A sensor 109a.

As shown in FIG. 6, a bracket 110 is screwed to the left side surface of the upper end of the rail 49. As shown in FIG. Figure 10 (
As is particularly clear from b), the bracket 110 is fitted with a locking screw 110a and a retaining ring 110b.
The removal is stopped by. lock screw 110a
is for locking the base 40 to the housing 2 by tightening it and screwing it into a female screw portion 40b protruding from the base 40. It should be noted that a coil spring 110c is fitted into the lock screw 110a to provide a bias spacing to the lock screw 110a. A detection switch 111 is also fixed to the bracket 110 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 and all operations of the disc playing apparatus are disabled.

Next, the turntable is removed by the disk ejecting and conveying mechanism.
A clamping mechanism for clamping the disk conveyed onto the bull 31 will be explained.

As shown in FIG. 2, a bracket 112 is fixed on the underbase 11 and behind the turntable 31. As shown in FIG. As shown in FIG. 9 (ω and (b)), a support member 113 is swingably attached to the upper end of the bracket 112 via a pin 113a. A pressing member 114 is rotatably provided which performs a disc clamping action in cooperation with the turntable 31. Note that the disc clamping is performed by the suppression member 114 being attracted to the turntable 31 by magnetic force. The position indicated by the two-dot chain line in FIG. 9 (ω) is referred to as the non-clamp position of the support member 113, and the position indicated by the solid line in FIG. 9(a) is referred to as the clamp position of the support member. 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 disposed at one end of the rotating end portion of the first lever member 116 via a pin 117a.

The other end of this second lever member 117 is a support portion vJ113.
is pivotally connected to the other swinging end of the pin 117b via a pin 117b.

Note that the bracket 112 is provided with an auxiliary lever member 118 that rotates together with the first lever member 116, and further includes a detection unit that detects completion of disk clamping by detecting the rotation angle of the auxiliary lever member. 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(a) 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. Four photocouplers 103a, 103b, 103C and 103d are provided in a straight line on the photosensor 103.
base 4 for each disk carrying unit 17 by
The position of 0 is detected.

Here, the address board 100, the 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 7-photo sensor 103 is checked, and the 6-bit photosensor 101 is adjusted horizontally. Next, the central axis of the photosensor 103 (indicated by 103e in FIG. 10 (ω)) and the center of the slit 10211 formed in the 300th disk holding unit 17
2e (shown in FIG. 10(a)), and in this state, move the address plate 100 up and down to align the center axis of the 6-bit photosensor 101 with the center axis of the slit of the lower bit of the address plate. . Further, 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 central axis 103e of the photosensor 103 and the second and 60
The center axis 102e of the slit 102b of the 0th disc holding unit 17 is aligned with the center axis 102e of the slit 102b of the 0th disk holding unit 17, and at this time, it is confirmed whether the center axis of the 6-bit photosensor 101 is aligned with the slit center axis of the lower bit of the address plate 100. . Thereafter, the horizontal position of the 4-bit 7-point sensor 103 is aligned with the slit of the disk holding unit 17. The adjustment is thus completed.

Next, the operation of the disk playing device having the above-mentioned configuration will be explained as follows.
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 (described above), 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. Therefore, the 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 disk onto the turntable and the pair of gripping arms 73.7
4 refers to a state in which the disk is gripped, 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 base 40 as the photosensor 103 reads the slit group 102 will be described in detail.

FIG. 10 (Assuming that the disk carrying unit 17 that carries the designated disk is the one in the center among the disk carrying units 17 drawn in three stages in ω) Photocoupler 103a of the A sensor 103 ,1
03b coincides with the slits 102a and 102b, respectively, and an ON signal is obtained from the photocouplers 103a and 103b, the drive voltage supply to the motor 44 is cut off and the base 40 is stopped.

When the base 4.0 is stopped at a position where the disk gripping means can grip the disk, the control circuit 1'20 drives the motor 68, and the disk gripping means including the movable chassis 64 moves toward the disk. The sensor 10 detects that the disk and the gripping means have moved and reached the disk gripping position.
6, the motor 68 and therefore the disk gripping means are stopped. Next, the presence or absence of a disc is detected by the photosensor 109a (shown in FIG. 5). When the presence of the disk is confirmed, the motor 77 is driven, and the disk is moved between the spindle 71, which is a gripping rod, and the gripping arm pair 7.
It is gripped at three points by 3.74. The sensor 84 and the detection switch 99 detect that the disc has been gripped.
When detected, the motor 44 is rotated again until an ON signal is obtained from the photocouplers 103b and 103C, and the base 40 is moved upward, for example, by about 3 mm. By this movement of 3III11, the positioning protrusion 1 that fits into the disk center hole and positions the disk.
The fitted state between 8d and the disk center hole is released. Next, the motor 68 is rotated in the reverse direction, 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 motors 6 and 8 are stopped.

After that, the base 40 is moved downward and the disc is placed on the turntable. If the selected song is recorded on the B side of the disc, that is, the top surface when the disc is stored, 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 B side of the disc, the control circuit 12
0 first confirms whether the base 40 is above or below the position corresponding to the 50th disk from the top.

When 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. The motor 86 is driven to reverse the disk and simultaneously lower the base. Note that the photosensor 93 detects that the disk reversal is completed.

When the disc is placed on the turntable, the geared motor 115 rotates to clamp the disc.

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, optical pickup 33, etc. are activated to start playing.

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 unit (16) that sequentially arranges and stores a plurality of discs is connected to a large number of disc carrying units (17) stacked one on top of the other in the disc arrangement direction. ). By doing so, the molding of the disc storage section is simplified, and the equipment for molding the disc carrying unit can also be small, resulting in lower costs. Furthermore, by appropriately adding a disk carrying unit, the amount of disks stored can be increased.

Further, in the disc playing device according to the present invention, the disc ejecting and transporting mechanism that sequentially selects arbitrary discs in the disc storage section and transports them to the playing position is movable along the disk arrangement direction of the disc storage section (16). a base (40); a disk gripping means provided movably on the base in a direction substantially perpendicular to the disk arrangement direction and gripping a selected disk; and a position detecting means for detecting that the base has reached and stopping the base, the position detecting means detecting the position of the base along the moving direction of the base corresponding to the disc storage position of the disc storage section. a plurality of slit groups (102) provided respectively;
a detection means (photo sensor 10.3.) that moves together with the base and detects the slit group;
- groups are integrally provided in the disk carrying unit.

As described above, since the slit group (102) is integrally provided in the disk holding unit, the disk housing section (16) made up of a large number of disk holding units can expand or contract in the disk arrangement direction due to thermal expansion or the like. However, since the slit always coincides with the disc storage position, the base (40) carrying the disc gripping means stops accurately with respect to the disc storage position, and the disc can be reliably gripped by the disc gripping means. It is.

[Brief explanation of the drawing]

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 gripping means;
FIG. 9 (ω and peaks) are side and rear views of the clamp mechanism, respectively, and FIG. Fig. 10) is a partial detailed view 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 is a diagram for explaining the operation of the disc playing device. It is a flowchart. 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 section 18d...
...Positioning protrusion 18e...Vertex portion 20.21.2.2...Shaft 20a...
...First threaded part 20b...Second threaded part 24...Plate 24a...Retaining ring 25...Press plate 26... ... Nut 26a ... Washer 27
．． 41cl, 57.82a, 82b, 91°96
a, 96b... Coil spring 29...
... Upper bases 29a, 43a, 55a, 59a, 68a. 110.112...Bracket 29b, 43
b, 88...Small spindle 29c, 43c
, 43d , 44b , 66a . 66b...Toothed belt wheel 31...Turntable 32...Spindle motor 33...Optical pickup 36.37.61... Guide Shileft 40...
...Base 40a...Cylindrical portions 41a, 41b, 56.59---Port-74LC・
...Lever 44.68, 77.86 ...Motor 44a...
... Fixed plate 46.47.67 ... Toothed belt 49 ...
...Rail 50...Counterweight 51.52...Pulley 53...Wire 55...Swinging member 6
2.63...Divided chassis 63a...Guide portion 64...Movable chassis 66C, ssa...Worm wheel 68b
, 861)... Worm 71... Spindle 71a... Gripping block 71b, No5a, 75b, 77a, 78a
. 88b... Gear 72... Frame 72a, 87b, 113a, 117a -
...Bin 72c, 79'a... Overhanging portion 73.74... Gripping arm 73a, 74. a...Tip portions 73b, 74b...Rack portions 73d', 74d...Long hole 78...Screw shaft 78b...Screw one Part 79...Movable bracket 81...Slider 81a, 87a...Light shielding plate 84.93, 101, 103, 106°109a, 1
09b...Photo sensor 86a,...
Coupler 87... Holding member 90... Stop collar 95... Movable piece 99.111.119... Detection switch 100
．． 105...Address plate 102...Slit groups 102a, 102b, 102c, 102d. 105a, 105b...Slit 103a,
103b, 103c, 103d...Photocoupler 103e...Central axis 108...Moving member 108'a...Bin portion 108b...Back End portion 108C...Front end portion 110a...Lock screw 113...Support member 114...Press member 115...Geared motor 115a... ...Output shaft 116...First lever member 117...Second lever member 118...Auxiliary lever member 120...Control circuit applicant Pioneer Co., Ltd. Agent Patent Attorney Motohiko Fujimura Figure 1 Figure 2 Figure q (a) (b) 70 faces (θ less than 1270 times (b) Blind/10b

Claims (1)

[Claims] The disc ejecting and transporting mechanism 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 and transports arbitrary discs in the disc storage unit to a playing position. a base movable along the disk arrangement direction of the disk storage section; a disk gripping means provided on the base so as to be movable in a direction substantially perpendicular to the disk arrangement direction for grasping a selected disk; and the disk a position detecting means for detecting that the base has reached a position where the gripping means can grip the arbitrary disk and stopping the base; The disk storage section includes a plurality of slit groups provided along the moving direction of the base in accordance with the positions thereof, and a detection means that moves together with the base to detect the slit groups, and the disk storage section is arranged in the disk arrangement direction. It is characterized by comprising a large number of disc carrying units stacked on top of each other, and a pressing means for pressing the disc carrying units in the stacking direction, and the slit group is integrally provided in the disc carrying unit. A disc playing device.