JPS5931792B2 - Recording disk unloading device in autoplayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an unloading device for a recording disc in an auto player, and more particularly, to a device for unloading a recording disc in an autoplayer, and in particular, a recording disc unloading device for unloading a recording disc in an autoplayer. This relates to a device that is forcibly taken out so that even if the device is pushed into the device, it will not be erroneously guided to the performance position.

An embodiment of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is an overall perspective view of an autoplayer according to the present invention, showing one configured for playing records,
Reference numerals 1 and 2 denote two upper and lower housings that constitute the autoplayer, and these two are always in a sealed state so that the internal structure cannot be directly touched from the outside.

In addition, if the upper housing 1 is made of a transparent material and the lead-in operation can be performed arbitrarily using the manual operation member of the tone arm attached to the housing 1 or 2, the lead-in state can be controlled externally. This makes it easy to check. , 3 is a group of switches for automatically operating the auto player, and display operation modes such as auto repeat and auto eject. 4
is an insertion/ejection opening for the record disc 5 provided in the front of the housing 2, and the upper and lower plates 6, □ and the left and right side plates 8, 9 are provided protruding from the plate body of the housing 2. In particular, the lower plate T is connected to the upper plate 6. As shown in FIG. 2, a relatively deep notch 10 is provided that extends further and protrudes forward, making it easy to insert and remove a record.

In addition, in order to smoothly insert the record 5, the upper and lower plates 6 are
, T are provided with inclined edges 11 and 12 at their tips. On the other hand, in FIG. 2, reference numeral 13 is a board installed in the housing 2, and at the bottom of the board 13 there is an electrical circuit box 14 that performs various controls using the electrical switch group 3.
, 15 are provided. Reference numeral 16 denotes a motor for driving the turntable 17 attached to the lower part of the substrate 13, and no center spindle is provided on the turntable IT.

On the other hand, reference numeral 18 denotes a bracket attached to the lower surface of the housing 1, and a through hole 19 is bored in the horizontal part of the bracket 18, and a lifting rod with a split pin 20 fitted in the upper end thereof is inserted into the through hole 19. 21 is slidably inserted therein, and a coil spring 23 is interposed between the cotter pin 22 fitted into the midsection of the elevating rod 21 and the horizontal portion of the bracket 18. The rod 21 is always urged downward. Reference numeral 24 denotes a pin installed horizontally at the bottom of the split pin 22 on the lifting rod 21;
An end of a link 26 which is rotatable about a shaft 25 is engaged with the pin 4 so as to lift the pin 24.

Further, the other end of the link 26 faces one end of an L-shaped link 28 that is rotatable about a shaft 27, and the other end of the L-shaped link 28 is rotatably connected to an operating rod 30 of the plunger 29. installed. That is, the above-mentioned plunger 2
9, the L-shaped link 28, link 26
The elevating rod 21 is lifted upwards through the . On the other hand, a record presser comprising a protrusion 31 that fits into the center hole of an LP record, a protrusion 32 that is continuous with the protrusion 31 and can fit into the center hole of the donut record, and a ridge 33 that protrudes from the periphery of this protrusion 32. A plate 34 is rotatably attached to the lower end of the lifting rod 21. That is, when the plunger 29 becomes inactive, the record holding plate 34 is lowered by the biasing force of the coil spring 23, and the protrusion 31 or 32 fits into the center hole of the record 5 on the turntable 17. The rotation of the turntable 17 is reliably transmitted to the record 5 by pressing this. Next, 35, 36
As mentioned above, is a roller for pulling the record disc 5 from the outside to the inside of the insertion/ejection opening 4 and from the inside to the outside, and its peripheral surface allows the retracting operation to be performed reliably and safely without damaging the record disc 5. Various processing treatments are carried out, and if necessary, carbon powder-containing rubber or the like is used from the standpoint of preventing static electricity. The roller 35 is attached to a predetermined portion of the casing 1 or 2 so that its circumferential surface faces an area at least as thick as the record disc than the horizontal position of the upper surface of the turntable 17. It is designed to be driven via a belt 39 by a motor 38 supported by a bracket 37 attached to a predetermined location within the housing 1. Note that a configuration in which the motor 38 is directly driven is also optional. On the other hand, the roller 36 is rotatably attached to one end of a link 41 which is rotatably operated around a shaft 40, and an operating rod 43 of a plunger 42 is rotatably connected to the other end of the link 41. There is. The roller 36 is located sufficiently below the horizontal position of the upper surface of the turntable 17, and when the plunger 42 is biased, the link 41 is automatically rotated to press the roller 36 against the roller 35. It works like this. On the other hand, four guide rails 44, 45, 46, 47 are attached to the upper surface of the board 13 radially and at equal intervals, and these guide rails 44, 45, 46, 47 extend from the outer edge of the board 13 to the turntable. 17, and consists of two bent plates facing each other as shown in FIGS. 3 and 4. In addition, these guide rails 44, 45,
Rectangular cylindrical sliding members 48, 49, 50, and 51 are loosely fitted into 46 and 47 and guided along these. Furthermore, inside the sliding members 48, 49, 50, 51, L-shaped plates 53, 5 that can freely rotate around the support shaft 52 are provided.
4, 55, and 56 are attached, and the inside of these upright pieces (the center side of the turntable) is formed into a curved shape, and a claw piece 57 is formed at the upper end thereof. Thus, when the sliding members 48, 49, 50, 51 are guided on the board 13 along the guide rails 44, 45, 46, 47, the L-shaped plates 53, 54, 55,
The lower surfaces of the parallel sides 53a, 54a, 55a, and 56a of 56 also slide on the substrate 13, and the upright pieces are also moved in a straight upright state. Next, 58, 59
, 60, 61 are strings fixed to the rear of the sliding members 48, 49, 50, 51, respectively.
Pulleys 62, 63, 64 rotatably mounted on 3,
65 to one end of springs 66, 67, 68, 69 attached to appropriate positions on the board 13, and constantly biases the sliding members 48, 49, 50, 51 toward the outside of the board 13. It's becoming like that.

On the other hand, other strings 70, 71, 72, 73 are fixed to the front of the sliding members 48, 49, 50, 51, and these are connected to a pulley 74 rotatably mounted on the base plate 13.
, 75, 76, 77 and 78, 79, and another roller 80 that guides the string in the vertical direction in a concentrated manner.
, 81, 82, and 83, and is further inserted into a through hole 84 formed in the substrate 13 at an offset position that does not interfere with the rotation of the turntable, and a pipe 85 provided to communicate with the through hole 84. These are bundled into one in this pipe 85, and one end is fixed to a pulley 88 attached to the rotating shaft of a motor 87 via a pulley 86 rotatably attached to the lower part of the base plate 13. .
, Therefore, due to the driving rotation of the motor 87, the sliding members 48, 49, 50, 51 are moved to the turntable 17, respectively, against the springs 66, 67, 68, 69.
can be concentrated toward the center at a constant velocity. In addition, 8 in Figure 4
Reference numeral 9 denotes a detection switch that is closed when the sliding member reaches the outermost part of the substrate 13. Also, inside the auto player near the insertion/ejection opening 4, there are sensors 90, 9 for detecting insertion of the record 5.
1, 92, and 93 are arranged in an arc shape around the center of the turntable 17, and the sensor 90 from the center
, 91, 92, 93 is the L-shaped plate 53, 5.
4, 55, and 56 (that is, on the center side of the L-shaped plates 53, 54, 55, and 56). 94 is a sensor for detecting the size of the record disc 5. When the record disc 5 placed on the turntable 17 is an LP disc, this is not shielded, and due to electromagnetic or photoelectric changes due to these differences, the size of the record disc 5 is detected. It is designed to detect a size of 5.

Sensors 95 and 96 are arranged near the turntable 17, and when these sensors are shielded by a record being carried in, the concentration device is activated.

Next, FIG. 5 is a block diagram of an electric circuit operated in connection with the above configuration, and 97, 98, 99, 100 are formed by shielding the above sensors 90, 91, 92, 93. The input terminal 101 receives the signals 0R (
The output terminal is connected to one of the input terminals of an AND (logical product) circuit 102.

On the other hand, 103 and 104 are input terminals for signals supplied when the sensors 95 and 96 are shielded, and 0R
The output terminals are connected to the input terminals of the circuit 105, and the output terminals are connected to the AND circuit 1 through the inverter circuit 106.
02, and this AND circuit 102
The output terminal of is connected to the positive input terminal of amplifier 107,
A motor 38 for driving the roller 35 is connected to the output terminal of the amplifier 107. Furthermore, the above AND
The output terminal of the circuit 102 is connected to one input terminal of an 0R circuit 108, and the output terminal of this 0R circuit 108 is connected via an amplifier 109 to the plunger 42 that presses the roller 36 against the roller 35. Furthermore, an inverter 110 is connected to the output terminal of the AND circuit 102.
One input terminal of the AND circuit 111 is connected through the AND circuit 111, and its output terminal is connected to the other input terminal of the 0R circuit 108. Furthermore, the output terminal of the AND circuit 111 is also connected to the negative input terminal of the amplifier 107. On the other hand, the output terminal of the 0R circuit 105 is also connected to one input terminal of an AND circuit 112, and its output terminal is connected to the other input terminal of the AND circuit 111.

Reference numeral 113 is the other input terminal of the AND circuit 112, into which a signal is input depending on a switch that is activated when the tone arm reaches the performance end position. Next, the operations of the autoplayer configured as described above will be sequentially explained.

First, the record disc 5 is inserted into the housings 1 and 2 from the position shown by the solid line in FIG. 1 or the dashed-dotted line in FIG. 2 through the insertion/removal port 4.

By providing a notch 10 in the lower plate 7, this insertion operation can be performed deep as shown by the two-dot chain line. In such a state, the leading edge of the record 5 reaches the lower part of the roller 35. Then, at a predetermined position where the record is inserted, one of the sensors 90, 91, 92, and 93 is shielded, and the output signal of the 0R circuit 101 is "
11, and together with the output signal "1" obtained by converting the output signal "0" of the 0R circuit 105 in the inverter circuit 106, the signal "1" is obtained on the output side of the AND circuit 102, and the signal "1" is outputted via the amplifier. While the motor 38 is driven, an output signal '11'I is also obtained on the output side of the other 0R circuit 108, and the plunger 42 is energized via the amplifier 109. Therefore, the roller 35 rotates due to the rotation of the motor 38, and the roller 36 is pressed against the roller 35 due to the bias of the plunger 42, and these mutually rotate to play the record. It is like guiding it inside the auto player while holding it there. In the middle of this kind of guidance, the above record 5
When the sensor 90, 91, 92, 93 is unshielded, the drive of the motor 38 and the energization of the plunger 42 are released, and the motor 87 constituting the concentration device is driven, and the pulleys 86, 88 Via
The strings 70, 71, 72, 73 are pulled, and the sliding members 48, 49, 50, 51 move along the guide rails 44, 45,
46, 47 toward the center of the turntable 17, and the center of the record 5 pressed by the L-shaped plates 53, 54, 55, 56 is placed above the center of the turntable 17. The record 5 is guided onto the turntable 17 in such a manner that a rough center positioning operation is performed. Once this is completed, the plunger 2
9 is released, the lifting rod 21 immediately descends under the elastic force of the coil spring 23, and the protrusion 31 or 32 of the record holding plate 34 is fitted into the center hole of the record 5, making it possible to adjust the accuracy. Centering is performed. When this is completed, the motor 87 is driven to rotate in the opposite direction to the above, the strings 70, 71, 72, 73 are pulled back, and the sliding members 48, 49, 50, 51 are retracted in the circumferential direction. . When the switch 89 detects the withdrawal, the motor 16 is driven to rotate. The rotation speed of the motor 16 is automatically determined by the sensor 94 detecting whether the record disc 5 on the turntable 17 is an LP disc or an EP disc. A well-known tone arm lead-in mechanism is then activated. When the record 5 is played and the tone arm reaches the playing end position, the record holding plate 34 is raised, the switch is activated, and the signal ``1'' is input to the input terminal 113. , thus the above AN
A signal "1" is obtained at the output of the D circuit 112, and this is supplied to the other input terminal of the other AND circuit 111. Incidentally, since the output signal "0"1 of the AND circuit 102 has been converted to ""1" by the inverter 110, the output signal "1" is obtained at the one input terminal of the AND circuit 111. Therefore, the output signal of the AND circuit 111 becomes 1"1, which is supplied to the negative input terminal of the amplifier 107 to reverse the motor 38, and also outputs the signal 11"1 to the output of the 0R circuit 108. Then, the plunger 42 is energized and the record on the turntable 17 is guided in the opposite direction toward the insertion/ejection opening 4 while being held between the two rollers 35 and 36. When the periphery of the record 5 reaches the notch 10, the record 5 reaches the sensor 9.
When the shielding for 5 and 96 is released, the roller 35
The motor 38 that rotationally drives the motor 38 is stopped, and the roller 36 is pressed against the roller 35, that is, the biasing force of the plunger 42 is released. Then, the ejecting operation is completed by pinching the periphery of the record 5 in the notch 10 and pulling it out. By the way, during the eject operation of the record 5, if the record 5 is pushed backwards toward the turntable 17 from the position indicated by the chain line as shown in FIG. The peripheral portion of the 0R circuit 10 passes between the rollers 35 and 36 and shields the sensors 95 and 96 again.
The signal 11'1 is obtained on the output side of the record disc 5, and as described above, the motor 38 is reversely rotated, the plunger 42 is energized, and the record disc 5 is guided to the insertion/ejection port 4 while being held therebetween. Therefore, unless the record 5 is completely removed from the insertion/ejection opening 4, the shielding of the sensors 90, 91, 92, and 93 is released, and the circuit is reset, the record 5 cannot be placed toward the turntable again. Therefore, even if the record disc 5 that has been taken out so as to face the notch 10 is mistakenly pushed into the interior from that position, it will be immediately pulled back and playback will be started by mistake. , it is possible to eliminate the problem of being unable to take out the record disc 5 or convert the record disc until the end of the performance.As explained above, the present invention provides a turntable and a recording disc exit. A first sensor and a second sensor are disposed in a recording disk guide path connecting the recording disk with the recording disk carrying-out means interposed therebetween, and when the recording disk is in the carrying-out mode, the first sensor and the second Only when the recording disc is evacuated from any of the sensors, the recording disc or another recording disc can be carried into the guide path, thereby ensuring that the recording disc can be carried out reliably and smoothly. As a result, other recording discs can be easily and quickly inserted into the insertion/removal slot.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall perspective view of an autoplayer according to the present invention, FIG. 2 is a front sectional view of the main parts, and FIG. 3 is a schematic plan view of the main parts. FIG. 4 is also an enlarged perspective view of the concentrated member of the record disc. FIG. 5 is a block circuit diagram showing the operation of the main part of the present invention. 4... Insertion/ejection port, 5... Recording disc,
17... Turntable, 35, 36...
... Carrying out means, 90, 91, 92, 93... Second sensor 95, 96... First sensor.

Claims (1)

[Claims] 1. A first sensor and a second sensor are disposed in a recording disc guide path connecting the turntable and a recording disc unloading port so that the recording disc unloading means is interposed therebetween, and when the recording disc is in the recording disc unloading mode, , an auto player capable of transporting the recording disc or another recording disc into the guide path only when the recording disc is evacuated from both the first sensor and the second sensor. Recording disc transport device.