JPS58164060A - Disk player - Google Patents

Abstract

PURPOSE:To secure the safety of a titled disk player at the time of opening of a door, by constituting said disk player in such a way that, when the door opening operation is performed while a piece of music is played, the door is opened after the disk playing means and the disk moving means are returned to their home positions. CONSTITUTION:When a door switch 1 is operated, a pulselike signal passed through a chattering preventing circuit consisting of resistances R111 and R112 and capacitors C111 and C112 becomes a clock input of a T-type flip-flop 111 after it is inverted by an invertor 110. The Q-output of the flip-flop 111 is inputted into an AND gate 113 together with the output of an open limiter switch 31a and the output of a switch 49a which detects the home position of a carrier 40. On the other hand, the Q-output is inputted into an AND gate 114 together with the output of a door close limiter switch 31b and the output of the above- mentioned switch 49a. Each output of the AND gates 113 and 114 is inputted into a driving circuit 112 as a forward rotation signal and reverse rotation signal and drives a door driving motor 26.

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 jukebox is generally known as such a disc playing device. However, the main body of conventional jukeboxes is very large, and it is very troublesome to take the discs in and out of the disc storage compartment, making them unsuitable for use as home jukeboxes.
Most were used for commercial purposes. Also,
The structure required a special key to open and close the door when changing disks, etc., which was very disadvantageous in terms of usability, and if a key was used, the door could be opened at any time even if the mechanism was operating. was not preferred because of the gain.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a disc playing device that is extremely compact and maintains safety when the door is opened.

Recently, several types of means have been proposed to greatly increase the amount of information stored on a disc by digitally inputting a signal, compared to a conventional audio disc in which signals are inputted in an analog manner. In particular, the method of using a disk, generally called a compact disk, which uses laser light to pick up signals, 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, 5
0 discs can store 1,000 songs with a playing time of 3 minutes, and since the thickness of a compact disc is approximately 1.2 mm, 50 discs will be 6 cm thick, and 1,000 songs can be stored on it. You can store many songs. By using a compact disk in this way, it is possible to provide an extremely small gicoke box that can be used in a general household. By using the gicoke box of this invention, there is no need to prepare a separate disc storage box to store many discs, and it is possible to select and play discs without touching the discs at all, so it can be used by women and dwarfs. But it won't damage the disk or damage the device.

A disc playing device according to the present invention includes: a disc storage section capable of arranging and storing a plurality of discs in a predetermined bit; a disc playing means movable in the disc arrangement direction of the disc storage section; and a disc moving means for loading (transporting) discs between the disc storage section and the disc playing means, in which at least one of the disc playing means and the disc moving means is moved to the home in response to an inter-door command. A signal is generated to return the vehicle to its home position, and the door is then opened based on the output of the means for detecting their home position.

Embodiments of the present invention will be described in detail below with reference to the drawings. j FIG. 1 is a perspective view showing the overall structure of a disc playing device according to the present invention. In the figure, 4 indicates multiple discs 2.
The main body of the device is capable of storing the disc and automatically playing the disc, and has a housing structure that allows it to be stacked with other devices of approximately the same size, such as an amplifier, a cicona, etc. A disk insertion opening 3 is formed, for example, in the front of the apparatus main body 4, and a disk storage section (rear) is provided near the insertion opening 3 so that disks can be easily inserted and removed. A door 5 for closing the insertion port 3 is attached to the 4i-mounted main body 4 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 an operation section that sends various commands to the device main body 4, and is separated from the device main body 1 and connected to the device main body 1 by wired or wireless means, for example.

FIG. 2 shows the configuration of the operating unit 6, (ω is a plan view, <h) is a front view including a partial cross section, and <C) is a side sectional view. On the operation panel 6, press the number keys 7 from 0 to 9 to specify the disc number and track number you want to select, and EN to register the specified number in memory.
T key8. 9. ALL key to play sequentially from the first disc 5- or to play all songs on a specified disc.9. 5TART key to start playing after memory registration is complete 10. NEXT key 11. Moves to the next registered disc or song during the performance of a disc or song registered in memory. An AGAIN key 12 is provided to cause the music to be played again according to the contents registered in the memory. Furthermore, a plurality of index plates 13 are provided as storage means on which the titles, track titles, etc. of the stored discs can be written, the contents of which can be changed in conjunction with replacement of discs, and can be easily searched.
．． A plurality of index inches 14 are provided corresponding to the number of index plates 13 in order to detect the index plate being searched in conjunction with this plate 13. Separately from the number key 7, index keys 15 from 1 to 5 are attached for specifying the disc number. The index plate 13 allows the disc title, track list, etc. to be easily changed in connection with disc replacement.

6- Also, both the device main body 4 and the operation section 6 are equipped with the following:
Disc IND16 and PROGRAM I that display the specified or playing disc number and track number
ND 17. Indicates that the play is in progress tPLAY T
ND18. After the carrier assembly stops at the predetermined position, the S T A lights up until it is ready to play.
N D B Y I N F) 19, △CCI 3SS IND20, which lights up while the carrier assembly and the pickup described below are moving to a predetermined position.
Furthermore, there is provided a display section consisting of an ERRORIND 21 that lights up when there is no disc at the specified disc number position or when the disc is stored with the front and back sides erroneously detected during a playing operation.

In the above configuration, the operating section 6, which integrally forms the storage means and various operation keys, is provided separately from the device main body 4. ) may also be provided.

FIG. 3 shows the internal structure of the disc playing device according to the present invention, in which (a) is a plan view, (a) is a front view, and (c) is a front view.
) is a side view. In the figure, the outer periphery of the door 5 described above is hidden by means such as painting, and support bins 23a and 2 fixed to the underbase 22 are fixed to the left and right sides of the door 5.
bearings 248 and 24b that fit with the bearings 248 and 3b, respectively. Bearing 24a.

For example, a fan-shaped gear 25 is attached to one side 24a of 24b. Motor 2 as a drive source for opening and closing door 5
6 and a reduction mechanism 27 are fixed to the underbase 22, and mesh with the sector gear 25 shown in the final stage gear 28'h of the reduction mechanism 27.

A cam 30 having a recess 30a on the peripheral wall is fixed to the shaft 29 of the final gear 28, and by fitting into the recess 30a, the cam 30 detects the opening limit and the closing limit of the door 5. 31a and 31b are cam 3
It is in contact with the peripheral wall of 0.

Disc storage section 3 for storing a plurality of discs 2
As shown in a schematic perspective view in FIG. 4, the underbase 22 has a plurality of grooves 33 formed at a constant pitch.
A support base 34 fixed to the support base 34 and a plurality of partition plates 35 inserted into the grooves 33 of the support base 34 are provided, and a plurality of disks are vertically stored side by side in slots formed between the partition plates 35. The structure is as follows. The support base 34 is formed of a continuous, integral member, and is
In addition to the groove 33, a pair of support members 36 and 37 are integrally provided at the front and rear for supporting the lower end of the inserted disc 2 at, for example, two points and for preventing the disc from moving in the front-rear direction. . A pair of support members 36.3.7 are arranged such that the front (disc insertion) side member 36 is lower than the rear side member 37 in order to restrict the free movement of the attached disk and prevent the disk from falling off due to external disturbances. It is configured to be high, and may be formed separately from the support base 34.

In the disk storage section 32, the disk is stored between two partition plates 35, which reduces friction caused by twisting between the disk and the partition plate when moving the disk, and also prevents damage to the disk. - In order to prevent scratches, the partition plate 35 has a substantially I-shaped shape with a guide wall 38 as shown in FIG. It has been subjected. Further, the partition plate 35 has a tapered or curved shape at the front and rear of the guide wall 38 to facilitate the 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 disc 2 positioned between the parallel portions 39 as shown in Fig. 5+b+. Storage in the storage position 2 can be performed reliably.

In FIG. 3, the carrier 40 has a guide bar 428,
42b and is movably supported. The carrier 40 is provided with a support guide 43 having four parts on each side that conform to and position the disc pulled out from the disc storage section 32 by a slider that is moved back during performance.

10- 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. In addition. By making the opposite side also an inclined surface, even if the disc deviates backward from the performance position when the disc is moved, it can be reliably returned to the normal WA 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 installed over a pulley 47 coupled to a reduction gear Vs11145 and four pulleys 48a to 48d attached to the underbase 22, and is fixed to the carrier 40. Carrier limit switches 49a and 4 detect the limit position of the rear key 40 in the left and right direction.
9b is provided. 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 for detecting the moving position of the carrier 40 is provided. The carrier position detection sensor 50 includes 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 section 32; Attach it on the carrier 40 so as to sandwich the slit part of [
It consists of a pulled foot coupler 52.

A mechanical base 53 attached to the carrier 40 has a disk drive motor 54 for rotating the disk, a disk information reading pickup 55 movably supported on the mechanical base 53, and a pickup drive motor 56 for driving the pickup 55. A deceleration mechanism 57, a slider 58 for pulling out a disk stored in the disk storage section 32, a guide base 59 for guiding and supporting the slider 58, and the like are mounted. Furthermore, de
1. Two guide plates 60a for guiding the disc taken out from the disc storage section 32 to the playing position.
, 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 clamp arm 63 to which a clamper 62 for clamping the disk is attached. etc. are attached to constitute a carrier assembly 64, which serves as a disc playing means.

The pickup 55 is supported movably in the radial direction of the disk by a pair of guide bars 658.65b attached to the mechanical base 53, and is mounted on a boo 966 coupled to the deceleration mechanism 57 and a pulley 67 fixed to the mechanical base 53. The pickup drive motor 56 drives the pickup drive motor 56 . A pickup limiter switch e9a for detecting the limit positions of the pickup 55 on the inner and outer circumferences of the disk, respectively.
, 69b tfia.

The two guide plates 60a and 60b are held at a predetermined distance by a stopper bin 70 (shown in Figure 15) located at the rear end to prevent the disk from deviating backward. , the ends on the disk storage section 32 side are bent outward from each other. As a result, the disk storage section 32 and the carrier assembly 64
The disc can be reliably guided to the performance position by absorbing the positional deviation between the disc and the disc, and the disc can be prevented from tilting at the performance position. Note that in this embodiment, the guide plate 6
As for 08.60b, a thin plate member was used and the other ends were bent outward from each other, but a thick plate member was used and the distance between the ends gradually widened as it approached the tip. It may also be something.

In FIG. 3, a disk wrapper 71 that prevents the disk from escaping from the storage section 32 is provided at the rear of the disk storage section 32, and a stopper arm 72 is rotatably supported on the underbase 22. supported and positionally regulated by

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. When the carrier assembly 64 is at the limit position in the right direction, that is, the home position, as shown in FIG.
As shown in the side view at the top of the top, the disc stopper 71 is engaged with the cam 73 of the carrier 4o to position it at the blocking position where it prevents movement of the disc.

On the other hand, when the carrier assembly 64 moves from the home position, as shown in the plan view in FIG. 7(a) and the side view in FIG. 71 in the counterclockwise direction as shown in the figure, and is retracted from the closed position indicated by -h in order to enable movement of the disk.

The disc stopper 71 is configured to take the above-mentioned blocking position within the limit that allows the disc to return to the support members 36 and 37 of the storage parts 3 and 2 when the disc in the disc storage part 32 is pushed backward, and the disc stops. Support member 3.6.
It may be arranged in a positional relationship such that it contacts the disk when it is on the disk 37.

Well, the disc stopper 71 is located in the disc storage section 3.
A regulating member that engages with the disk as a stopper member to prevent the disk from escaping from the storage section 32 when attached to the device 2, and also prevents movement of the disk from the storage section 32 due to disturbances such as vibration when the device is not in use. It acts as. Note that the regulating member may be provided separately from the disc stopper 71, and various configurations are possible for its configuration.

FIG. 8 shows the configuration of a part of the slider, (al
is a plan view, and (b) is a front view. In the figure, the upper surface of the guide base 59 has, for example, three guide grooves 7'5a to 7'5a.
75o is formed, and the slider 58 can slide linearly with respect to the guide base 59 by engaging with the guide grooves 75a to 75c via guide pins 76a to 76c.

A drum-shaped pull-out roller 78 and a reset roller 79 are attached to the slider 58 via arms 77a and 77b.
On the other hand, the storage section [32] serves as a disk moving member that rolls and moves the disk from the performance position, and is provided at a predetermined distance in the sliding direction of the slider 58.

A drive motor 80 for driving the slider 58 and a worm gear 83 connected to the dryer 80 via a belt 81 and a pulley 82 are attached to the guide base 59 via a chassis 84. A drive pulley 86 is coaxially attached to the main gear 85 meshed with the worm gear 83, and a wire 87 wound around the pulley 86 is connected to the slider 58 via pulleys 88a and 88b provided at both ends of the guide base 59, respectively. The slider 58 is fixed and driven by the driving force of the motor 80. Slider remix 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 disc discrimination position switch that detects the position for determining the presence or absence of a disc and whether it is front or back when the disc is moving. 89b is provided.

Figure 9 shows the configuration of a part of the clamper, (a)
17 is a plan view including some parts, 17- is a front view including some parts, and (C) is a side view. In the figure, the support provided on the carrier 40 (the third figure) has a clamp arm 63 attached to a stand 90 with a shaft 91 as a support point, and is rotated by a spring 92 in the clockwise direction in the figure. The clamp arm 63 is urged in the opening direction.The rotation of the clamp arm 63 is regulated by a pin 93 protruding from the base 90. The clamp arm 63 includes a guide portion 9 having a magnetic material 94 at its tip.
5 and a guide pin 96 that controls the rotation of the clamp arm 63 in the counterclockwise direction, that is, in the closing direction, is attached.

When the guide bin 96 is loaded into the disc playing position, it engages with the guide groove 97a of the engaging member 97 provided on the slider 58 (see FIG. 8), and is inserted into the guide groove 9'''7a. The clamp arm 63 is rotated in the closing direction against the spring 92 by moving along the truncated cone. The clamp arm 62 and the clamp arm 63' are made of a non-magnetic material.

A drive motor 54 for driving the disk 2 is attached to the mechanical base 53 on the side facing the clamper 62, and a turntable 100 as a disk drive means is fixed to the rotating shaft of the motor 54 so that it can rotate freely. There is. The turntable 100 has a ring-shaped magnet 101 and a yoke 102 built therein.

In a part of the clamper having such a configuration, when a disc is loaded into the performance device, the guide groove 978 of the engaging member 97 provided on the slider 58 and the clamp arm 63
The clamp arm 63 is rotated in the closing direction by engagement with the guide pin 96 . As the clamp arm 63 rotates, the head of the clamper 62 is inserted into the return table 100 through the center hole of the disk 3. At the time of insertion, the magnetic body 99 of the clamper head forms a magnetic circuit with the magnet 101 and the yoke 102 in the turntable 100 and is pulled by the yoke 102, so that the clamper 62
A portion of the taper lifts the disc 2 placed on the support guide 43 (see FIG. 3 +01) of the carrier 40, and clamps the disc 2 against the mounting surface 100a of the turntable 100. Further, the clamp arm 63 rotates, and the engaged guide portion 95 is separated from the clamper 62 by the attractive force between the magnetic body 94 and the magnet 98.

Now, the clamping force is the force that the magnetic body 99 is attracted to the yoke 102, and the force that the magnet 98 at the bottom of the clamper is attracted to the magnetic body 99.
It becomes doubly strong with the force attracted by 4.

In the above state, the clamper 62. The disc 2 and the turntable 100 are not in contact with the other members, and the disc 2
It can be rotated stably.

FIG. 10 is a block diagram of the Ili control system of the disc performance device according to the present invention, and the operation unit 6 includes music selection switches for specifying the disc number and track number to be selected, as explained in FIG. 2. A display section 602 for displaying the group 601, disc number, track number, or 1 is provided to display the operating mode of the aircraft. CPU
603, ROM60 in which the operating program is written
4 and a RAM 605 for storing predetermined calculations is connected to the aforementioned operation switch group 601 and display section 602 via an input/output interface 606 and an output interface 607.

An operation switch group 601 consisting of a large number of switches is key 1.
~A corner interface with a large number of people configured in a matrix 6
Operation keys can be inputted through the key scanning operation through 06 with fewer connection lines. Operation switch group 6
The arbitrarily operated switch 01 is read by key scanning, and its contents are displayed on the display section 602 and sequentially written into the RAM 605.

The device main body 4 has a CPLI401 and R similar to the operation section 6.
A control unit composed of AM402 and ROM403,
Input interface 404. Output interface 4
05. 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 21 to a designated disk position. Slider drive motor 80 for loading the disc from the storage position to the playing position. It consists of a pickup drive motor 56 that moves the disk information reading pickup in the disk radial direction, various display elements, and the like.

The input signal source 408 includes a carrier position sensor 50 .
Carrier limit 5W49a provided to prevent the carrier from deviating from within a predetermined movement section.

b. Slider limiter 5W89a that detects whether a disc is in the storage position or playing position; b. Disc presence/front/back detection sensor 61. Disk discrimination position 5W89c indicating the operating position of this sensor 61, big a la primic switch 69a, b detecting the innermost circumferential position and outermost circumferential position of the pickup, disk drive motor 5
Disk motor speed sensor 1.4 detects when motor 4 reaches a predetermined rotation speed. Disk motor 22--Motor speed sensor 2 for detecting stoppage of the motor. It consists of an information detection section that detects information such as a signal indicating the innermost recording circumference, the outermost recording circumference, or the recorded track number from a control signal detected from the disk through a predetermined demodulation circuit.

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. For example, (0, 0) indicates stop, (0, 1) indicates forward direction. ,
(1, 0> is the opposite direction.

In addition, in order to be able to change the speed as necessary, we use 3-bit information as an input source, which is the above control plus 1 bit indicating high speed or low speed, for example, (0, O, O) to stop, <0.0.1) in the positive direction.

Low speed, (0,1,O) in the opposite direction, low speed, (1,0°1)
is forward direction, high speed, (1,1,0) is backward direction.

It is also possible to set it to a low speed. Additionally, multiple output bits and D
It is also possible to use a /Δ converter as a speed control means.

The device main body 4 and the operation unit 6 are connected by a bidirectional data transmission system 460, and both CPUs 401 and 603 receive predetermined encoded parallel data and data transmission via peripheral interface adapters (PIA) 409 and 608. A hunt shake mode signal is transmitted as a timing signal.

The device body 4 drives the mechanism to a mechanical initial position (stopping the disk drive motor, releasing the slider, carrier home position, etc.) when the power is turned on, and after returning to the initial position, sends a message to the operating unit 6 via the bidirectional data transmission system 460. 1st
request to send the disc number. The operation section 6 is a 5TART key 1 which is pressed after the end of the progeramink in the playing order.
0 (shown in the second diagram), the first disc 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 supported disk number matches the carrier position.

The stop position control of the carrier 40 is performed, for example, by comparing a count signal output from a position sensor 9-50 provided on the carrier with a reference count value corresponding to the storage position of the designated disk. During this time, the main body h4 and the operation section 6 display a message indicating that ACCESS is in progress (data for the ACCESS display is sent from the main body 4 to the operation section 6 via the bidirectional data transmission system 460).

When the carrier 40 arrives at the designated position and stops, the slider drive motor 80 is driven and the corresponding disc is loaded to the playing position. At this time, when the disc discrimination position switch 89c provided in the middle of the loading mechanism is activated, a signal from the disc presence/front/back detection sensor 61 is input, and it remains unchanged only when the information side is loaded in the correct direction. Loading continues, and if it is determined that there is no disc to be loaded or in the opposite direction, the loading mechanism reverses and stops loading. At the same time, an error message is displayed on the display section.

The disc loaded in the playing position is the clamper 6.
After the disk drive motor 54 is properly clamped to the main body 4, when it is detected that the disk drive motor 54 starts and reaches a predetermined rotation speed, the main body 4
requests the operating section 6 for the specified song number. A comparison is made between the specified song number and the song number in the disc information, and the vibrator 25-tube 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 pickup 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 pickup 55 arrives at the predetermined song number position,
The pickup 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 next disc to be played is different from the disc currently being played, the above-described process is reversed, the disc is moved to a new disc position, and the disc is O-dinged and played in the same manner as described above. If the discs are the same, the player immediately requests transmission of the program number to be played and starts playing.

=26- FIG. 11 [This shows a circuit block diagram of the control section of the door 5. When the door switch 1 provided on the front side of the device body 4 is operated, the resistors R111, R1j2゜capacitor CII+! A pulse-like signal passed through a chattering prevention circuit composed of C112 is inverted by an inverter 110, and then becomes a clock input to a T-type flip-flop 111. Therefore, each time the door switch 1 is pressed, the flip 70
The Q and o outputs of the knob 111 perform inversion of H and l-. A power reset signal generated when the power is turned on is applied to the clear terminal of the flip-flop 111, and when the power is turned on, the flip-flop 111 is initially set to Q=L and (m=H).The Q output of the flip-flop 111 is closed. The output of the limiter switch 31a and the output of the switch 49a that detects the Baum position of the carrier 4o are input to the AND gate 113.On the other hand, the 0 output is input to the AND gate 113 together with the output of the door close limiter switch 31b and the output of the switch 498. It is input to the product gate 114. Each output of the AND gates 113 and 114 is input to the drive circuit 112 as a forward displacement signal, a reverse rotation signal, etc., and drives the door drive motor 26.

Also, the Q output of the flip-flop 111 is connected to the inverter 1.
15 and Condereza CN3. The signal is input to the input interface 404 of the main control system shown in FIG. 10 as a signal for returning the carrier 40 to the home position via a differentiating circuit composed of a resistor R113.

In such a configuration, when the power is turned on, the T-type flip-flop 111 is set to Q=l−tc+= by the power supply reset signal.
Since it is initially set to H, until the door 5 reaches its closing limit,
That is, until the close limiter switch 31b generates an output at the closing level (closed state), a reverse rotation signal is generated and the door 5 is closed.

When the door switch 1 is pressed, the 7 lip-flop 111 changes to Q,
l-1, 0-1° is applied to the angle 404 (shown in FIG. 10). Therefore, if the carrier 40 is not at the home position, the carrier 40 returns to the home position, and when it returns, the switch 49a, which had been closed until then, opens, so the AND gate 113 A forward rotation signal is generated and heard by door 5 valve.

In this way, even if the door is opened during a performance, for example, the disc playing means including the carrier 40 returns to its home position and then the door 5 is heard, so safety is maintained. Note that a slider home position detection switch 89a is used instead of the carrier home position detection switch 49a, and the disk moving means 4&- including the slider 58 is used.
After the banner returns to the home position, the door 5 can be opened.

Next, the operation of the disk playing device having the above-described configuration will be explained.

First, regarding disc storage, when you press the door switch 1 provided on the front of the device main body 4, the door 5 automatically opens to reveal the disc storage compartment 29 provided immediately behind the door 5. Simply insert the disk 2 into any slot formed by the plate 35. At this point, 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 Fig. 6), so that the stored disk is securely placed in the storage section 32 without deviating backward. It will be installed. At the same time as storing the disc, by recording the title name of the disc in the index section 13a of the corresponding index plate 13 provided in the operation section 6 and the track number etc. in the MEMO section 13b, the "title" and the title of the stored disc can be recorded. This allows you to easily search for song titles, etc. After storing the disc, when the door switch 1 is pressed again, the door 5 is automatically closed and the music selection becomes possible.

There are two ways to select songs: one is to sequentially specify the disc (slot) number and the song number using the number keys 7 of the operation unit 6, and the other is to open and close a plurality of index plates 13 and select the desired disc using the index key 15. (The song designation 30- is carried out using the number key 7).

If you want to specify and register, for example, the 5th track of the 3rd disc and the 10th track of the 23rd disc among the stored discs using the former song selection method, press the number key 7 and other keys according to the operating procedure shown in Figure 12 (ω). 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 select as shown in No. 12) and +C+. Open the index plate 13 of the page on which the disc number corresponding to
This is done by operating each key according to the operating procedure shown in Figure +d+. Note that by opening and closing the index plate 13, an index switch linked thereto is operated, and the contents of the keys are automatically changed. The specified disk (slot) number and song number are registered in the memory 2 in the RAM 402.

After completing the specified registration of the disc number and track number using one of the above song selection methods, press the 5TART key 10.
CCESS 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 5TART key 10, the carrier assembly 64 starts moving to a predetermined disk position. At this time, the disc stopper 71 that prevents the stored disc from rolling backward is the carrier assembly 61! As I moves, the cam 73 protruding from the rear 40 of the main 11 gradually disengages from the cam bin 74 fixed to the stopper arm 72 that supports the disc stopper 71, and due to its own weight, it moves counterclockwise from the state shown in +b+ in Figure 6. The disc is rotated in the direction and retracted to a position where there is no problem in pulling out the stored disc to the performance position (see Fig. 7).

As the carrier assembly 64 moves, the DISKIND
16 counts up and stops at the number corresponding to the disc position, and at the same time 8ccEss, 4ND20
goes out.

After the carrier assembly 64 is stopped in place, a slider 58 loads the storage disc to the playing position.
starts moving. 5TA as the slider 58 moves
ND BY IND19 lights up. This 5TAN
The D 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 a part of the slider will be explained with reference to FIG.
When the carrier 40 stops at the designated disk position,
The pull-out roller 78 and reset roller 79 attached to the slider 58 are in the state shown in FIG. 14 Cal. In this state, the slider drive motor 80 is started and moves the slider 58 backward (in the direction of the arrow in the figure). As a result, as the slider 58 moves, the pull-out roller 78 moves the disc that is in contact with the outside and periphery of the disc to the engagement position with the clamper 62, that is, the playing position (the carrier 40
(FIG. 14)). The disk conveyed by the slider 58 is set on the support guide 43 of the carrier 40. After that, slider 5
8 continues to move further from the disk set position as shown in FIG. 14 fc), thereby providing an extra stroke S between the disk and the outer circumference. During this extra stroke S, a disk clamping operation, which will be described later, is performed.

Slider 58, which exerts its force during loading of the disc.
Turn on the disk discrimination position switch 890 in the λ section 58a
let In response to the ON of this switch 890, as shown in FIG. 15 (a), the disk existence/front/back discrimination sensor 61 provided on the kite plate 60a is activated, and if there is no disk or if the disk is on the back side. in case of,
The slider 58 changes the direction of movement to return the disc to the storage section 32. At the same time, ERRORIND21 lights up. If normal, the loading operation continues and the disc is set in the playing position.

The disc 2- in the playing position is supported by the support guide 43 so that its center is lower than the center of the disc 34-2 in the storage portion 32 by a distance 1111t+, as shown in FIG. After the disc is set in the playing position, the engagement member 97 provided on the slider 58 is moved by the above-mentioned surplus stroke S of the slider 58.
The guide groove 97a and the guide bin 96 fixed to the clamp arm 68 are engaged to rotate the clamp arm 68 in the closing direction. As the clamp arm 68 rotates, the head of the runner 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 lifts up the disk placed on the support guide 43, and the turntable 100 The disk is pressure-clamped to the mounting portion 100a of the disk. At this time, the center of the disk 2'' is at a distance of 1111ftz from the center of the disk 2' on the support guide 43.
(t2<j+) (see Figure 16).

When the mounting of the disc onto the turntable 100 is completed, the slider limiter switch 89b detects the completion of ONL clamping. (The switch 89a detects the home position of the slider 58.) In response to turning on the switch 89b, the disk drive motor 57I starts. 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, the ACCESS IND 20 lights up, the PROGRAM IND 7 counts up, and the pickup 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. ST' while playing
AND BY IND19゜ACCESS IN
D20 goes out and PLAYIND18 lights up.

In the playing state (clamped state), as shown in FIG.
overlaps with the outer periphery of disk 2b located at position 2,
Furthermore, the positional relationship is such that it is located 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 made small and that the amount of the disk to be pulled out during rope inking can be reduced. Furthermore, when the outer periphery of the disc 2a being played is located between the parallel parts 39 of the partition plate 35, it is possible to prevent the disc from being erroneously stored in the storage section 32 after the performance is finished.

Note that the shape of the performance position side of the partition plate 35 is not limited to the shape having the parallel portion 39 shown in FIG. 4, but only a tapered portion 35a is provided as shown in FIG. The outer periphery of the disc being played may be positioned in between.
Alternatively, as shown in FIG. 18 (ω), the outer periphery of the disc being played may be positioned between the ends of the plate-shaped partition plate.

When the performance of the specified music and all the programmed music are completed, the PLAY IND 18 turns off and the pickup 55 returns to its home position. Thereafter, the clamp on the disc is released and the disc is returned to the disc storage section 32.

Then, the carrier assembly 64 returns to the home position and the series of operations ends.

Next, the operation in special cases will be explained. First, if it is determined that the disc is "absent" or the disc is on the back side of the disk by the disk presence/front side discrimination sensor 61 during one-ding of the disk, the moving direction of the slider 58 is reversed and the disk is The disk is returned to the storage unit 32, and the carrier assembly 64 moves to the next designated disk (slot) position, or returns to the home position if there is no designated song.

Furthermore, when the pickup 55 starts moving and searches for a designated song, if the designated song number is greater than the number of songs recorded on the disc, that is, if there is no designated song, the big-a-raprimic switch 69b on the outer periphery is activated. The pickup 55 returns to its home position. After releasing the disk clamp and returning the disk to the storage section 32, the same operation as described above is performed.

When a movement to the next registered disc or song is commanded by operating the N or EXT keys 11 during a performance, if the next specified song is recorded on the disc currently being played, that song will be moved. The knob 55 at the head of the disc moves, and when switching to the next disc, the same operation as when 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 disc performance device with this configuration can accommodate various disc sizes, it can be made ultra-small compared to conventional jukeboxes by adapting to digital audio discs with a particularly small diameter, so-called compact discs. becomes possible. Further, the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways. 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 described above, according to the present invention, when a door opening operation is performed during a performance, for example, the door opens after at least one of the disc playing means and the disc moving means returns to the home position. 1.L: Safety can be maintained when the door is opened.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall structure of a disc playing device according to the present invention, and FIG. 2(a) is a plan view of the operating section. (C) is a front view including a partial cross section, (C) is a side sectional view, and (C) is a side sectional view.
Figure (a) is a plan view of the main body of the device, (b) is a front view, and (C)
is a side view, Figure 4 is a schematic perspective view of the disk storage section, and Figure 5 is a side view.
Figure (a) is a view seen from the direction of the arrow in Figure 4, (b) is a view of the player in the playing state from the direction of arrow B in Figure 4, and Figure 6.
7 and 7 are explanatory diagrams of the operation of the disc stopper, where fa) is a plan view, crest is a side view, FIG. 8 (al is a plan view of a part of the slider, (b) is a front view, and FIG. (a) is a plan view including a partial cross section of a part of the clamper, 〉 is a front view including a partial cross section, (C) is a side view, Figure 10 is a block diagram of the control system, and Figure 11 is a diagram of the door. Circuit block diagram of the control section, Figures 12(a) to 12(a) - (The small figure does not show the operating procedure when selecting music, Figure 1.
Figure 3 is a flowchart diagram for explaining the operation of each mechanism, Figure 14 (al~(C) is an explanatory diagram of the operation of a part of the slider, Figure 15 is the position between each member when determining whether or not a disc is present/front/back). 16 is a diagram showing the relationship between the disc in the storage position and the playing position. (a) is a plan view, the crest is a side view, and FIG. 16 is a diagram showing the relationship between the disc in the storage position and the playing position. A diagram showing the positional relationship, Figure 18 (ω and (l)
)> is a plan view showing another shape of the performance position side end of the partition plate. Explanation of symbols of main parts 2...Disc 4...Device body 5
...Door 6...Operation section 22.
..... Under base 26 ..... Door drive motor 32 ..... Disk storage section 34 ..... Support base 35 ..... Partition plate 36.37..・・・・・・
Support member 40...Carrier 43...Support guide 44...Carrier drive motor 50...Carrier position detection sensor 54...
...Disc drive motor 55...Pickup 56...Pickup drive motor 41-58...Slider 60a, 601)...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 bin □ 97...Engaging member 98.101...Magnet 1-100...
...Turntable applicant Pioneer Co., Ltd. agent Patent attorney Motohiko Fujimura 42- -412 Srr+ ν- Tail 15 (b> 2□ Pakai [Beni #170 416-

Claims (1)

[Claims] A disc storage part that is located in a housing and can accommodate a plurality of discs arranged at a predetermined pitch; a disc playing means that is movable in a direction in which the discs are arranged in the disc storage part; and a space between the disc storage part and the disc playing means. a door provided in the housing; and a detection means for detecting a home position of at least one of the disc playing means and the disc moving means, and responsive to a door opening command. The disc playing device is characterized in that a signal is generated to return at least one of the disc playing means and the disc moving means to a home position, and then the door is opened based on the output of the detecting means.