JPH0237627B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION 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. A joke box is generally known as such a disk playing device. However, the main body of the conventional desk box itself was very large, and it was very troublesome to insert and remove the disk from the disk storage compartment, making it unsuitable for home use and not being used for commercial use. was the majority. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a disc playing device which is extremely compact and allows easy attachment and detachment of the disc. Recently, several types of means have been proposed to greatly increase the amount of information that can be accommodated by digitally inputting signals to the disk, compared to conventional audio disks that input analog signals. In particular, the method of using a disk, generally called a compact disk, which picks up signals using laser light, has a small diameter of 12 cm, making it easy to handle, and allows the performance device to be made smaller. The disc has a playing time of one hour on one side, which is approximately 1.5 times the amount of information that can be stored on both sides of a conventional audio disc. Therefore, for example, 50 disks can hold 1,000 songs with a playing time of 3 minutes, and since the thickness of a compact disk is about 1.2 mm, 50 disks can hold about 1,000 songs with a playing time of 3 minutes.
It has a thickness of 1.5 cm and can hold up to 1000 songs. By using a compact disk in this way, it is possible to provide an extremely small-sized joke box that can be used in general households. By using the desk box of this invention, there is no need to prepare a separate disk storage box to accommodate a large number of disks, and it is also possible for women and dwarfs to use the disks to select and play music without touching the disks. This will not damage the disk or damage the device. The disk playing device according to the present invention includes a disk storage section that can accommodate a plurality of disks arranged in a predetermined pitch, and a turntable and a disk clamp mechanism that are movable relative to each other in the disk arrangement direction of the disk storage section. and a disk moving means for moving the disk between a disk storage section and a playing position of the disk playing means, wherein the disk moving means is located at a first position corresponding to the disk storage section. and a second corresponding to the disc playing means.
The movable member is configured to be movable between the first position and the first position, and includes a movable member that engages with the disk to move it, and a driving force applying means that applies a driving force to the movable member. from the first and second
While moving to a third position between the two positions, the disk is moved, and while moving from the third position to the second position, the disk is engaged with a clamp arm, which is a component of the disk clamp mechanism, and is moved to a clamp release position. The feature is that it can be rotated from the position to the clamp position. Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing the overall structure of a multi-disc selective performance device according to the present invention. In the figure, reference numeral 4 denotes the main body of the device that can accommodate a plurality of disks 2 and automatically play the disks, and has a housing structure that allows it to be stacked with other devices of approximately the same size, such as amplifiers and tuners. ing. A disk insertion port 3 is formed, for example, in the front of the device body 4, and a disk storage portion (described later) is provided near the insertion port 3 so that disks can be easily inserted and removed. A door 5 for closing the insertion port 3 is attached to the main body 4 of the apparatus so as to be openable and closable, and the door 5 is opened and closed by a door switch 1 provided on the front surface of the main body. 6 is the device main body 4
This is an operation section that sends various commands to the device, and is, for example, separated from the device main body 1 and connected by wired or wireless means. FIG. 2 shows the configuration of the operating section 6, in which a is a plan view, b is a partially sectional front view, and c is a side sectional view. The operation panel 6 includes number keys 7 from 0 to 9 to specify the number of the disc you want to select and the number of the track, an ENT key 8 to register the specified number in memory, and a key to play the disc in sequence starting from the first disc. ALL key 9 to play all songs on the specified disk, START key 10 to start playing after memory registration is complete, NEXT to move to the next registered disk or song while playing a disk registered in memory or a song.
key 11, and an AGAIN key 12 which causes the player to play again according to the contents registered in the memory. Furthermore, a plurality of index plates 13 serve as storage means on which the titles, track titles, etc. of stored discs can be written, the contents can be changed in connection with replacement of discs, and the plates 13 can be easily searched. A plurality of index switches 14 are provided corresponding to the number of index plates 13 to detect the index plate being searched in conjunction with the number key 7, and a number key from 1 to 5 for specifying the disk number is provided separately from the number key 7. An index key 15 is attached to each. The index plate 13 allows the disc title, track list, etc. to be easily changed in connection with disc replacement. In addition, both the device body 4 and the operation section 6 have a disk IND16 and a PROGRAM IND17 that display the specified or playing disk number and track number, a PLAY IND18 that indicates that the song is being played, and a carrier that will be described later. STAND BY IND19 lights up after the assembly has stopped in a predetermined position until it is ready to play, and ACCESS IND lights up while the carrier assembly and the pickup mentioned below are moving to a predetermined position.
20. Furthermore, it lights up when there is no disc at the specified disc number position, or when it is detected that the front and back sides are incorrectly stored and this is detected during the performance operation.
A display section consisting of ERROR IND21 is provided. In the above-described configuration, the operation section 6 in which the storage means and various operation keys are integrally formed is provided separately from the device main body 4;
It may be provided on both sides or only on the device main body 4 (for example, on the front side). FIG. 3 shows the internal structure of the multi-disk selection performance device according to the present invention, where a is a plan view;
b is a front view, and c is a side view. In the figure, the outer periphery of the door 5 mentioned above is hidden by means such as painting, and there are underbases 22 on the left and right sides of the door 5.
The bearings 24a and 24b are fitted with support pins 23a and 23b fixed to the bearings 24a and 24b, respectively. A fan-shaped gear 25 is attached to, for example, one 24a of the bearings 24a and 24b. A motor 26 and a deceleration mechanism 27 as a drive source for opening and closing the door 5 are fixed to the underbase 22, and the deceleration mechanism 2
The final stage gear 28 of No. 7 meshes with the sector-shaped gear 25. A cam 30 having a recess 30a in the peripheral wall is fixed to the shaft 29 of the final stage gear 28.
Further, limiter switches 31a and 31b, which respectively detect the opening limit and closing limit of the door 5 by fitting into the recess 30a, are in contact with the peripheral wall of the cam 30. The disk storage section 32 for storing a plurality of disks 2 is, as shown in a schematic perspective view in FIG.
A support base 3 fixed to the underbase 22 with a plurality of grooves 33 formed at a constant pitch.
4, and a plurality of partition plates 35 inserted and installed in the groove 33 of the support base 34, the partition plates 35
The structure is such that a plurality of disks are housed vertically side by side in slots formed between the disks. The support base 34 is formed of a continuous integral member, and in addition to the groove portion 33 described above, supports the lower end of the inserted disk 2 at two points, for example, and prevents the disk from moving in the front-rear direction. For example, a pair of support members 36 and 37 are integrally provided at the front and rear.
A pair of support members 36 and 37 are provided at the front (disk insertion) to restrict the free movement of the mounted disk and to prevent the disk from falling off due to external disturbances, etc.
The side member 36 is configured to be higher than the rear side member 37, and may be formed separately from the support base 34. In the disk storage section 32, the disk is stored between two partition plates 25, which reduces friction caused by twisting between the disk and the partition plate when the disk is moved, and prevents damage to the disk. In order to achieve this, the partition plate 35 has a substantially I-shaped shape having a guide wall 38 as shown in FIG. Further, the partition plate 35 has a tapered or curved shape at the front and rear of the guide wall 38 to facilitate mounting of the disc and to serve as a guide when returning the disc from the performance position to the storage position. In particular, by forming a parallel portion 39 at the tip of the tapered portion 38a on the playing position side, it is possible to perform a performance with the disk 2 positioned between the parallel portions 39 as shown in FIG. 5b. It can be reliably stored in the storage position. In FIG. 3, the carrier 40 is movably supported by fitting into guide bars 42a and 42b through a round hole 41a and an oblong hole 41b provided through the side surface. The carrier 40 is provided with a support guide 43 having a recessed portion on its upper surface that conforms to and positions a disc pulled out from the disc storage portion 32 by a slider to be described later during performance.
This support guide 43 supports the lower end of the disk at two points, for example, so that the center position of the disk is slightly lower than the center position of a clamper, which will be described later. The support guide 43 on the disk storage section 32 side is formed with an inclined surface 43a so that the disk can be moved smoothly. By making the opposite side also an inclined surface, even if the disk deviates rearward from the performance position during movement of the disc, it can be reliably returned to the normal performance position. The carrier 40 is driven by a carrier drive motor 44 via a deceleration mechanism 45 and a wire 46 in the left-right direction in the figure. The wire 46 is the speed reduction mechanism 45
pulley 47 and underbase 32 coupled to
Four pulleys 48a to 48d attached to
and is fixed to the carrier 40.
Carrier limiter switches 49a and 49b are provided to detect the limit position of the carrier 40 in the left-right direction. Here, when the retracted position, that is, the home position of the carrier 40 is set to the right limit position in the figure, the switch 49a detects the home position of the carrier 40. Furthermore, a carrier position detection sensor 50 detects the moving position of the carrier 40.
is provided. Carrier position detection sensor 50
A slit plate 51 fixed to the underbase 22 and having a slit formed along the moving direction of the carrier 40 corresponding to the disk storage position of the disk storage portion 32, and a slit portion of the slit plate 51. and a photocoupler 52 mounted on the carrier 40 so as to sandwich the photocoupler 52. Mechanical base 53 attached to carrier 40
includes a disk drive motor 54 for rotating the disk, a disk information reading pick-up 55 movably supported on the mechanical base 53, a pick-up drive motor 56 and a speed reduction mechanism 57 for driving the pick-up 55, and a disk storage section. A slider 58 for pulling out the disk stored in the disk drive 32, a guide base 59 for guiding and supporting the slider 58, and the like are mounted. Furthermore, two guide plates 60 guide the disc taken out from the disc storage section 32 to the playing position.
a, 60b, a disk presence/front/back detection sensor 61 for determining the presence or absence of a disk attached to either one of these two guide plates and whether it is front or back, and a clamper 6 for clamping the disk.
A clamp arm 63 to which 2 is attached constitutes a carrier assembly 64,
It has become a means of playing discs. The pick-up 55 is supported movably in the radial direction of the disk by a pair of guide bars 65a and 65b attached to the mechanical base 53, and is mounted on a pulley 66 connected to the deceleration mechanism 57 and a pulley 67 fixed to the mechanical base 53. The pickup drive motor 56 is connected to the wire 68 and driven by the pickup drive motor 56. pick up 55
A pick-up limiter switch 69 detects the limit positions on the inner and outer peripheries of the disk, respectively.
a and 69b are provided. The two guide plates 60a and 60b are held at a predetermined distance by a stopper pin 70 (shown in FIG. 15) located at the rear end to prevent the disk from deviating rearward.
The ends on the side of the disk storage section 32 are bent outward from each other. As a result, it is possible to absorb misalignment between the disc storage section 32 and the carrier assembly 64, to reliably guide the disc to the performance position, and to prevent the disc from tilting at the performance position. In addition,
In this embodiment, the guide plates 60a, 6
0b is made of a thin plate and the other ends are bent outward, but a thick plate is used and the distance between the ends gradually widens as it approaches the tip. It's okay to be. In FIG. 3, a disk stopper 71 for preventing the disk from escaping from the storage section 32 is provided at the rear of the disk storage section 32, and a stopper arm is rotatably supported on the underbase 22. It is supported and position regulated by 72. A cam pin 74 that can be engaged with a cam 73 protruding from the carrier 40 described above is fixed to the stopper arm 72. The cam pin 74 is located in the rightward limit position or home position in FIG.
The carrier 40 is shown in plan view in , and in side view in b.
The disc stopper 71 is engaged with the cam 73 of the disc stopper 71 to be positioned at a blocking position for inhibiting movement of the disc. On the other hand, when the carrier assembly 64 moves from the home position, the engagement of the carrier 40 with the cam 73 is released, as shown in FIG. is rotated counterclockwise as shown in the figure, and the disk is retracted from the blocking position to enable movement of the disk. The disk stopper 7 is configured to take the above-mentioned blocking position within the limit that allows the disk to return to the support members 36 and 37 of the storage section 32 when the disk in the disk storage section 32 is pushed rearward. They may be arranged in a positional relationship such that when they are on the support members 36, 37, they are in contact with the disk. The disk stopper 71 also prevents the disk from slipping out of the storage section 32 by engaging the disk as a stopper member when the disk is installed in the storage section 32, and when the device is not in use, it prevents the disk from being removed due to disturbances such as vibrations. It acts as a restricting member that prevents the disk from moving from the portion 32. Note that the regulating member may be provided separately from the disk stopper 71, and various configurations are conceivable for its configuration. FIG. 8 shows the structure of the slider section, in which a is a plan view and b is a front view. In the figure, for example, three guide grooves 75a to 75c are formed on the upper surface of the guide base 59, and the slider 58 is guided by engaging with the guide grooves 75a to 75c via guide pins 76a to 76c. It is capable of sliding linearly with respect to the base 59. The slider 58 has arms 77a and 7
A drum-shaped pull-out roller 78 and a reset roller 79 are attached via the roller 7b. corresponding first
and a second position corresponding to the disk playing means, and serves as a disk moving member that rolls and moves the disk between the disk storage section 32 and the disk playing means, and the sliding direction of the slider 58 are provided at a predetermined distance from each other. A drive motor 80 for driving the movable members including the slider 58 and a worm gear 83 connected to the motor 80 via a belt 81 and a pulley 82 are connected to the guide base 5 through a chassis 84.
It is attached to 9. A drive pulley 86 is coaxially connected to the main gear 85 that meshes with the worm gear 83.
A wire 87 wound around the pulley 86 is fixed to the slider 58 via pulleys 88a and 88b provided at both ends of the guide base 59, and the slider 58 is moved by the driving force of the motor 80. Drive. Slider limiter switches 89a and 89b that detect the sliding limit of the slider 58 by engaging with the cam portion 58a of the moving slider 58, and a disk that detects the position of the disk to determine the presence or absence of the disk and whether it is front or back when the disk is moving. A discrimination position switch 89c is provided. FIG. 9 shows the structure of the clamper section, in which a is a plan view partially in section, b is a front view partially in section, and c is a side view. In the figure, a cradle 90 provided on the carrier 40 (third illustration)
A clamp arm 63 is rotatably attached to the clamp arm 63 with a shaft 91 as a support point, and is urged by a spring 92 in the clockwise direction in the figure, that is, in the opening direction. In addition,
The clamp arm 63 is located between a position indicated by a solid line A in FIGS. 9a and 9b, that is, a clamping position close to the turntable, and a position indicated by a broken line B in FIG. 9a, that is, a clamp release position away from the turntable. Can rotate. The amount of rotation of the clamp arm 63 is regulated by a pin 93 protruding from the cradle 90. The clamp arm 63 is attached with a guide portion 95 having a magnetic material 94 at its tip and a guide pin 96 that controls the rotation of the clamp arm 63 in the counterclockwise direction, that is, in the closing direction. The guide pin 96 is connected to the slider 5 mentioned above when the disc is loaded to the playing position.
8 (see FIG. 8), and by moving along the guide groove 97a, the clamp arm 63 is moved in the closing direction against the spring 92. Rotate. The approximately truncated conical clamper 62 is provided with a ring-shaped magnet 98 at the bottom and a magnetic body 99 at the head, and is loosely fitted into the clamp arm 63 at a guide portion 95. Note that the clamper 62 and clamp arm 63 are made of non-magnetic material. Mechanical base 53 on the side facing the clamper 62
includes a drive motor 5 for driving the disk 2.
4 is attached, and a turntable 100 as a disk drive means is fixed to the rotating shaft of the turntable 100 so as to be rotatable. Turntable 1
00 has a ring-shaped magnet 101 and a yoke 102 built therein. In the clamper section having such a configuration, when the disc is loaded to the performance position, the guide groove 97a of the engaging member 97 provided on the slider 58
The clamp arm 63 is rotated in the closing direction by engagement with the guide pin 96 of the clamp arm 63. As the clamp arm 63 rotates, the head of the clamper 62 passes through the center hole of the disk 2 and is inserted into the turntable 100. When inserted, the magnetic body 99 on the clamper head touches the turntable 10.
The tapered part of the clamper 62 forms a magnetic circuit with the magnet 101 and the yoke 102 in the clamper 62 and is pulled by the yoke 102, so that the tapered part of the clamper 62 is attached to the disk 2 placed on the support guide 43 of the carrier 40 (see FIG. 3c). and turntable 1.
The disk 2 is pressure-clamped to the mounting surface 100a of 00. Furthermore, the clamp arm 63 rotates and separates the guide portion 95 from the clamper 62, which was coupled by the attractive force between the magnetic body 94 and the magnet 98. In this way, the clamping force is doubled by the force by which the magnetic body 99 is attracted to the yoke 102 and the force by which the magnet 98 at the bottom of the clamper is attracted by the magnetic body 94. In the above state, the clamper 62, the disk 2, and the turntable 100 are not in contact with other members, and the disk 2 can be rotated stably. FIG. 10 is a block diagram of the control system of the multi-disk selection performance device according to the present invention, and the operation section 6 has a music selection function for specifying the disk number and song number to be selected as explained in FIG. 2. A display section 60 that displays the switch group 601 and the disk number, track number, or operating mode of the aircraft.
2 is provided. A control unit composed of a CPU 603, a ROM 604 in which an operating program is written, and a RAM 605 for storing predetermined calculations is connected to the aforementioned operation switch group 601 and display unit 602 via an input/output interface 606 and an output interface 607. Connected. Operation switch group 601 consisting of a large number of switches
is configured in the form of a key matrix, and input of operation keys is performed through a key scanning operation via an input/output interface 606 using fewer connection lines. Any switch in the operation switch group 601 that is operated is read by the key scan, and its contents are displayed on the display section 602 and sequentially stored in the RAM.
605. The device main body 4 includes a CPU 40 similar to the operation section 6.
1. A control section composed of a RAM 402 and a ROM 403, an input interface 404, an output interface 405, a drive circuit 406, a driven section 407, and an input signal source 408 are provided. The driven unit 407 includes a carrier drive motor 44 that drives the carrier to a designated disk position, a slider drive motor 80 that loads the disk from the storage position to the performance position, a disk drive motor 54 that rotationally drives the disk, and disk information. It consists of a pickup drive motor 56 that moves the reading pickup in the radial direction of the disk, various display elements, and the like. The input signal source 408 includes a carrier position sensor 50 composed of optical means for detecting the carrier movement position, and a carrier limiter SW 49 provided to prevent the carrier from deviating from a predetermined movement section.
a, b, slider limiter SW89a that detects whether the disc is in the storage position or the playing position;
b. Presence or absence of a designated disk during loading, presence or absence of a disk that detects front and back, front and back detection sensor 6
1. Disk discrimination position SW89c that indicates the operating position of this sensor 61, pick-up limiter switches 69a, b that detect the innermost and outermost circumferential positions of the pick-up, and detects when the disk drive motor 54 has reached a predetermined rotation speed. A disc motor speed sensor 1 detects the stop of the motor, a disc motor speed sensor 2 detects the stop of the motor, and a control signal detected from the disc through a predetermined demodulation circuit indicates the innermost recording circumference, the outermost recording circumference, or the recorded song. It consists of an information detection section that detects information such as number. The drive circuit 406 uses 2-bit information as an input source to control driving and stopping of each motor in the forward or reverse direction.
Let (0,1) be the forward direction and (1,0) be the reverse direction.
In addition, in order to be able to change the speed as necessary, the input source is 3-bit information, which is the above-mentioned control plus 1 bit indicating high speed or low speed.
(0,0,0) is stopped, (0,0,1) is forward,
Low speed, (0,1,0) in the opposite direction, low speed, (1,0,
1) is forward direction, high speed, (1, 1, 0) is reverse direction,
It is also possible to set it to a low speed. Furthermore, it is also possible to use a plurality of output bits and a D/A converter as a speed control means. The device main body 4 and the operation unit 6 are connected by a bidirectional data transmission system 406, and both CPUs 401,
603 is peripheral interface adapter (PIA)
409 and 608, a handshake mode signal is transmitted as a timing signal for predetermined encoded parallel data and data transmission. The device body 4 drives the mechanism to a mechanical initial position (disk drive motor stop, slider release, carrier home position, etc.) when the power is turned on, and after returning to the initial position, the bidirectional data transmission system 4
60 to request the operation unit 6 to transmit the first disk number. The operation section 6 is used to press the START key 10 (second
(shown), the first disk number is sent to the main body 4 via the bidirectional transmission system 460. The main body 4 drives the carrier 40 so that the designated disk number and carrier position match. The stop position control of the carrier 40 is performed, for example, by comparing a count signal output from a position sensor 50 provided on the carrier with a reference count value corresponding to the storage position of the designated disk. During this time, the main body 4
And the operating section 6 displays a display indicating that ACCESS is in progress (data for displaying ACCESS is sent from the main body 4 to the operating section 6 via the bidirectional data transmission system 460). When the carrier 40 reaches the specified position and stops,
The slider drive motor 80 is driven, and the corresponding disc is loaded into the performance position. At this time, when the disk discrimination position switch 89c provided in the middle of the loading mechanism is operated, the signal from the disk presence/front/back detection sensor 61 is input, and the loading is continued only when the information side is loaded in the correct direction. continues,
If it is determined that there is no disk in the opposite direction and there is no disk to be loaded, the loading mechanism is reversed and loading is stopped. At the same time, an error message is displayed on the display section. After the disk loaded at the performance position is correctly clamped by the clamper 62, the disk drive motor 54 starts, and when it is detected that the predetermined rotation speed has been reached, the main body 4 selects the specified song number from the operating section 6.
request. A comparison is made between the specified song number and the song number in the disc information, and the pickup 55 is driven at high speed to the beginning of the specified song number. If the designated song number is greater than the number of songs recorded on the disc, the pick up limiter switch 69b on the outer periphery is activated, and it is determined that the specified song cannot be found. At this time, the pickup 55 stops and returns to the inner circumference of the disk at high speed.
Also in this case, an error is displayed. When the pick-up 55 arrives at a predetermined song number position, the pick-up 55 enters the play state and plays the corresponding song. At the same time, the play is displayed on the display section. When the performance of a predetermined song is completed (designated song number +1 is detected), the display indicating that the music is being played is turned off, and the main body 4 requests the number of the next song and moves on to the next performance. If the disk to be played next is different from the disk currently being played, the above-described process is reversed, the disk is moved to a new disk position, and the disk is loaded and played in the same manner as described above. If the discs are the same, the system immediately requests transmission of the program number to be played and starts playing. FIG. 11 shows a circuit block diagram of the control section of the door 5, and the door switch 1 installed on the front of the main body 4 has resistors R ₁₁₁ , R ₁₁₂ and a capacitor.
A pulse signal is generated by a differentiating circuit composed of C ₁₁₁ and C ₁₁₂ and inputted to an AND gate 110 together with a carrier limiter switch 49a that detects the home position of the carrier 40. The output of AND gate 110 becomes the clock input of T-type flip-flop 111. T-type flip-flop 111
The two outputs Q, are input to the door open limiter switch 31a, the door close limiter switch 31b, and the AND gates 113 and 114, respectively, and the outputs of the AND gates 113 and 114 are sent as forward/reverse rotation signals via the drive circuit 112. Door drive motor 2
Rotate 6. A power reset signal is applied to the reset terminal of the T-type flip-flop 111. In such a control section, when the power is turned on, a reset signal is activated regardless of the operation of the door switch 1 or the carrier position, and the T-type flip-flop 11 is activated.
1 is set to Q=L,=H, so the closing limiter switch 31b is driven in the reverse direction until it reaches the L level (closed state) and the door 5 is closed. On the other hand, the operator of the door switch 1 inverts the T-type flip-flop 111, which becomes effective only when the switch 49a that detects the home position of the carrier 40 is at the L level (in the home position), and the open limiter switch 31a is set at the L level (closed). Open the door 1 and close the limiter switch 31.
The door 1 is closed by reversing the rotation until b reaches the L level (closed state). This door control unit is configured such that the door 5 can be opened only when the carrier 40 equipped with the performance system is in the home position, and as a result, a new disc may be erroneously stored in the storage position of the disc being played. Problems can be prevented before they occur. Next, the operation of the multi-disk selection performance apparatus configured as described above will be explained. First, regarding storage of disks,
When the door switch 1 provided on the front of the door is pressed, the door 5 automatically opens to reveal the disk storage section 32 provided immediately behind the door 5.
All you have to do is insert the disk 2 into any slot formed by the . At this time, the disk stopper 71 is in a predetermined blocking position due to engagement with the cam 73 of the carrier 40 in the home position (see Figure 6), so the stored disk can be reliably stored without deviating backward. It is attached to the section 32. The index section 13a of the corresponding index plate 13 provided on the operation section 6 at the same time as the disk is stored.
By recording the disc title name and the track list in the MEMO section 13b, the title, track list, etc. of the stored disc can be easily searched. After storing the disk, press door switch 1 again.
When the button is pressed, the door 5 is automatically closed and the song selection becomes possible. There are two ways to select songs: one is to use the number keys 7 on the operation panel 6 to sequentially specify the disc number and song number, and the other is to use the number keys 7 on the operation panel 6 to sequentially specify the disc number and song number.
3 and specifying the desired disc using the index key 15 (the number key 7 is used to specify the song). If you want to specify and register, for example, the 5th track on the 3rd disc of the storage discs and the 10th track on the 23rd disc using the former song selection method, press the number key 7 and other keys according to the operating procedure shown in Figure 12a. This is done by operating the keys. On the other hand, when using the latter song selection method to specify and register the 3rd song on the 8th disc and the 5th song on the 33rd disc, first enter the corresponding disc number as shown in Figure 12 b and c. Open the page index plate 13, operate the index key 15 (indicated by diagonal lines in the figure) corresponding to the disc number, and then specify the track number using the number key 7.
Thereafter, each key is operated according to the operating procedure shown in FIG. 12d. Note that by opening and closing the index plate 13, an index switch linked thereto is activated, and the contents of the keys are automatically changed. When the specified registration of the disc number and track number using one of the above song selection methods is complete, press the START key 1.
When 0 is pressed, ACCESS IND20 lights up and each mechanism starts operating. The operation of each mechanism will be explained below based on the flowchart shown in FIG. In response to a start command from the START key 10, the carrier assembly 64 starts moving to a predetermined disk position. At this time, the disk stopper 7 prevents the stored disk from falling backwards.
1, as the carrier assembly 64 moves, the cam 73 protruding from the carrier 40 gradually disengages from the cam pin 74 fixed to the stopper arm 72 that supports the disk stopper 71, and due to its own weight, the cam 73 in FIG. From this state, the disc is rotated counterclockwise and retracted to a position where there is no problem in pulling out the stored disc to the playing position (see Fig. 7). DISK due to movement of carrier assembly 64
IND16 stops at the number corresponding to the count-up disk position, and at the same time, ACCESS IND20 turns off. After the carrier assembly 64 is stopped in place, the slider 58, which loads the storage disk to the playing position, begins to move. STAND BY IND19 lights up as the slider 58 moves. This STAND BY IND 19 remains lit until the disc is mounted on the turntable 100 and the disc drive motor 54 rotates to start playing. The operation of the slider section will be explained with reference to FIGS. 8a to 9c and FIG. The reset roller 79 is in the state shown in FIGS. 8a and 8b and FIG. 14a, that is, in the first position corresponding to the disk storage section 32. In this state, the slider drive motor 80 is started to move the slider 58 backward (in the direction of arrow F in the figure), that is, toward the second position corresponding to the disc playing means. As a result, the pull-out roller 78 comes into contact with the outer periphery of the disk and moves the disk to the slider 5.
8 to the engagement position with the clamper 62, that is, the performance position (support guide 43 having an inclined surface 43a provided on the carrier 40) (FIG. 14b). The disk conveyed by the slider 58 is moved between the positions shown by the broken line in FIG. 14c, that is, the first position and the second position.
By reaching the third position between the positions, the support guide 43 of the carrier 40 is set. Thereafter, the slider 58 continues to move further from the disk set position toward the second position, as shown in FIG. 14c, thereby providing an extra stroke S between it and the outer periphery of the disk. During this extra stroke S, a disk clamping operation, which will be described later, is performed. The slider 58 turns on the disk discrimination position switch 89c with its cam portion 58a during loading of the disk. This switch 89c is ON
In response, as shown in FIGS. 15a and 15b, the disk presence/reverse discrimination sensor 61 provided on the guide plate 60a is activated, and if there is no disk or the disk is on the rear side, the slider 58 is activated.
changes the direction of movement to return the disk to the storage section 32. At the same time, ERROR IND21 lights up.
If normal, the loading operation continues and the disc is set in the playing position. The disk 2' in the performance position is supported by the support guide 43 so that its center is a distance t ₁ lower than the center of the disk 2 in the storage section 32, as shown in FIG. As is clear from FIGS. 8a to 9c, after the disc is set at the playing position, the above-mentioned extra stroke S of the slider 58 causes the guide groove 97a of the engaging member 97 provided on the slider 58 to engage the clamp. Arm 6
8 is engaged with the guide pin 96 fixed to the guide pin 96, and the clamp arm 68 is moved in the direction of arrow Q from the clamp release position shown by the broken line in FIG. 9a to the clamp position shown by the solid line in FIGS. 9a and b. Rotate it. As the clamp arm 68 rotates, the head of the clamper 62 passes through the disk center hole and is inserted into the turntable 100. At the time of insertion, the magnetic body 99 of the clamper head is pulled by the yoke 102 in the turntable 100, so that the tapered part 62a of the clamper 62 is attached to the support guide 4.
3, and press-clamp the disc to the mounting surface 100a of the turntable 100. At this time, the center of disk 2'' is at a distance from the center of disk 2' on the support guide 43.
t ₂ (t _{2 1} ) (see Figure 16). When the disk is completely installed on the turntable 100, the slider limiter switch 89b is turned on.
Turns on and detects clamp completion. (The switch 89a detects the home position of the slider 58.) In response to the ON of the switch 89b, the disk drive motor 54 is started. When the disk drive motor 54 reaches a constant speed, the pickup 55 starts moving at high speed to the beginning of the designated song number. At this time, ACCESS IND20 lights up,
Further, the PROGRAMIND 7 counts up, and the pick-up 55 stops at the designated song position, at the same time displaying the song number. The pickup 55 moves from the stop position to constant speed running and starts playing. While playing
STAND BY IND19 and ACCESS IND20 go out, and PLAY IND18 lights up. In the performance state (clamp state), the 17th
As shown in the figure, the outer circumference of the disk 72a being played overlaps with the outer circumference of the disk 2b located in the disk storage section 32, and is further positioned within the outer edge of the partition plate 35. This has the effect that the depth of the main body 4 of the apparatus can be reduced, and that the amount of the disk to be pulled out during loading can be reduced. In addition, disk 2a being played
When the outer periphery of the disc is located between the parallel portions 39 of the partition plate 35, there is also the effect of preventing the disc from being erroneously stored in the storage section 32 after the end of the performance. Note that the shape of the partition plate 35 on the performance position side is the fourth
The tapered portion 35a is not limited to the shape having the parallel portion 39 shown in the figure, but as shown in FIG. 18a.
The outer periphery of the disc being played may be positioned between the tapered parts, or the outer periphery of the disc being played may be positioned between the ends of the plate-shaped partition plate, as shown in FIG. 18b. You can also position it. When the performance of the designated song and all the programmed songs are completed, the PLAY IND 18 goes out and the pickup 55 returns to its home position. The disk is then unclamped and
The disk is returned to the disk storage section 32. The carrier assembly 64 then returns to the home position and the series of operations ends. Next, the operation in special cases will be explained. First, during disk loading, if the disk presence/front/back discrimination sensor 61 determines that the disk is "absent" or the disk is "back", the moving direction of the slider 58 is reversed and the disk storage section 32 is
The carrier assembly 64 moves to the next designated disk position or returns to the home position if there is no designated song. When the pick-up 55 starts moving and searches for a designated song, if the designated song number is greater than the number of songs recorded on the disk, that is, if there is no designated song, the pick-up primitive switch 69 on the outer periphery is activated.
The pickup 55 returns to the home position by the operation b. After the disk clamp is released and the disk is returned to the storage section 32, the same operation as described above is performed. When a command is given to move to the next registered disk or song by operating the NEXT key 11 during a performance, if the next specified song is recorded on the disk that is currently being played, the program moves to the beginning of that song. When the pickup 55 moves and the next disk is to be selected, the same operation as in the case where there is no designated song is performed. Further, the same operation is performed when the AGAIN key 12 is used to command the player to play again according to the contents registered in the memory. Although the multi-disk selection performance device with such a configuration can accommodate various disk sizes, it is particularly suitable for digital audio disks with small diameters, so-called compact disks, which makes it easier to use than conventional desk boxes. This enables ultra-miniaturization. Furthermore, the present invention is not limited to the above embodiments, and various modifications can be made.
For example, a configuration may be adopted in which a disc playing means including a pickup 55 is provided above the disc storage section 32. As is clear from the above, in the multi-disk selective performance device according to the present invention, the disk performance means is provided in the vicinity of the disk storage section and is movable in the disk arrangement direction, and furthermore, the disk movement means has a configuration in which the amount of movement is small. Therefore, it is possible to downsize the main body of the apparatus, and since the disk storage section is provided near the disk insertion opening, it is possible to attach the disk extremely easily. Further, the disc moving means includes a movable member that is provided movably between a first position corresponding to the disc storage section and a second position corresponding to the disc playing means, and that engages with the disc and moves it. , a driving force applying means for applying a driving force to the movable member, and the movable member moves the disk while moving from the first position to a third position between the first and second positions, While moving from the third position to the second position, it engages with a clamp arm, which is a component of the disk clamp mechanism, and rotates it from the clamp release position to the clamp position. That is, the driving force for driving the movable member that is a component of the disk moving means and that engages with and moves the disk is utilized as the driving force for rotating the clamp arm. Therefore, the power dedicated to attaching and detaching the clamper is reduced, and the overall structure of the musical instrument is simplified and the number of parts is reduced.
Furthermore, since the disk is clamped by the rotating movement of the clamp arm, the structure is simple and the number of parts is small.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall configuration of a multi-disk selection performance device according to the present invention, FIG. Figure 3a is a plan view of the main body of the device, b is a front view, c is a side view, Figure 4 is a schematic perspective view of the disk storage section, Figure 5a is a view seen from the direction of arrow A in Figure 4, and b is a view in the playing state as seen from the direction of arrow B in Fig. 4, Figs. 6 and 7 are explanatory diagrams of the operation of the disk stopper, where a is a plan view, b is a side view, and Fig. 8 a is the slider. Fig. 9a is a plan view including a partial cross section of the clamper part, b is a front view including a partial cross section, c is a side view,
Fig. 10 is a block diagram of the control system, Fig. 11 is a circuit block diagram of the door control section, Figs. 12 a to d are diagrams showing the operating procedure when selecting music, and Fig. 13 explains the operation of each mechanism. FIGS. 14a to 14c are flowcharts for explaining the operation of the slider section, and FIG. 15 is a diagram showing the positional relationship between each member when determining the presence or absence of a disk and front and back, where a is a plan view and b is a plan view. A side view, Fig. 16 is a diagram showing the relationship between the discs in the storage position and the playing position, Fig. 17 is a diagram showing the positional relationship of the partition plate, guide plate, and disc in the playing state, and Figs. FIG. 7 is a plan view showing another shape of the position side end portion. Explanation of symbols of main parts 2...Disk, 4...Device body, 5...Door, 6...Operation unit, 22...Underbase, 26...Door drive motor, 32...Disk storage section, 34...Support base, 35...Partition plate ,3
6, 37...Support member, 40...Carrier, 43...Support guide, 4...Carrier drive motor, 50...Carrier position detection sensor, 54...Disk drive motor, 55...Pickup, 56...Pickup drive motor, 58...Slider, 60a ,60b...
Guide plate, 61... Disc presence/front/back detection sensor, 62... Clamper, 63... Clamp arm, 64... Carrier assembly, 71... Disk stopper, 78... Pull-out roller, 79... Reset roller, 80... Slider drive motor, 96...
Guide pin, 97... Engaging member, 98, 101... Magnet, 100... Turntable.

Claims (1)

[Claims] 1. A disk storage section capable of arranging and storing a plurality of disks at a predetermined pitch, a disk playing means movable relative to the disk storage section in the disk arrangement direction, and the disk storage section and the disk playing means. a disk moving means for transporting a disk therebetween; and positioning the disk storage section and the disk playing means relative to each other so as to bring the disk playing means to a storage position corresponding to a designated one of the disks. positioning means, the disc playing means comprising a turntable, a clamp arm whose free end is rotatable between a clamp position in which it is close to the turntable and a clamp release position in which it is separated from the turntable; a clamper provided at the free end of the clamp arm to mount and press a disc on the turntable, and the disc moving means corresponds to a first position corresponding to the disc storage section and a first position corresponding to the disc playing means. The movable member includes a movable member that is movable between a second position and a second position that engages with the disk to move it, and a driving force applying means that applies a driving force to the movable member. moving the disk from the first position to a third position between the first and second positions, and moving the disk from the third position to the second position.
2. A plurality of disc selection performance device, characterized in that the plural-disc selective performance device engages the clamp arm while moving to the clamping position and rotates the clamp arm from the clamp release position to the clamping position.