JPS5953628B2 - Recording disk loading method in autoplayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording disk loading method in an auto player, and in particular, a recording disk inserted from outside the auto player is transported into the auto player. The present invention relates to a recording disk in which the center holes thereof are concentrated so as to reach the center of the turntable.

Embodiments 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 changed. This makes it easy to check from the outside. 3 is a group of switches for automatically operating the auto player; auto repeat 1.
Operation modes such as auto-eject are displayed.

Reference numeral 4 denotes an insertion/ejection opening for a record disc 5 provided at the front of the housing 2, and upper and lower plates 6, 7 and left and right side plates 8, 9 are provided protruding from the plate body of the housing 2. In particular, the lower plate 7 A relatively deep notch 10 is provided extending from the plate 6 and protruding forward as shown in FIG. 2, so that a record can be easily inserted and removed.

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 electric circuit box that performs various controls by the above-mentioned electric switch group 3. 1
4 and 15 are provided. 16 is the turntable 1 attached to the bottom of the board 13? This is a driving motor, and no center spindle is provided on the turntable 17.

On the other hand, 918 is a bracket attached to the lower surface of the housing 1, and the horizontal part of this bracket 18 has a through hole 19.
A lifting rod 21 having a split pin 20 fitted to its upper end is slidably inserted into the through hole 19.
A coil spring 23 is interposed between the cotter pin '522 fitted into the midsection of the bracket 18 and the horizontal portion of the bracket 18, and this coil spring 23 always urges the lifting rod 21 downward. .

Reference numeral 24 denotes a pin installed horizontally below the split pin 22 on the lifting rod 21, and one end of a link 26 that is rotatable around a shaft 25 holds the pin 24. It is engaged in such a way as to raise it up.

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 L-shaped link 28. The other end is rotatably attached to the operating rod 30 of the plunger 29. That is, by the urging of the plunger 29, the L-shaped link 28 and the link 2
6, the lifting rod 21 is lifted upward. On the other hand, a protrusion 31 that fits into the center hole of an LP record, a protrusion 32 that is continuous with the protrusion 32 that can fit into the center hole of a donut record, and a protrusion 33 that protrudes from the periphery of this protrusion 32.
A record holding plate 34 consisting of the following is rotatably attached to the lower end of the lifting rod 21. That is, when the plunger 29 becomes inactive, the record pressing plate 34 moves downward under the biasing force of the coil spring 23, and the protrusion 31 or 32 presses 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 being pressed against the turntable 17. Next, 35,3
6 is a roller for drawing the record 5 from the outside to the inside of the insertion/ejection opening 4 and from the inside to the outside as described above;
The peripheral surface is processed so that the retracting operation can be performed reliably and safely without damaging the record 5, and if necessary, carbon powder-containing rubber or the like is used to prevent static electricity. The roller 35 is connected to the turntable 17.
It is attached to a predetermined part of the casing 1 or 2 so that its circumferential surface faces at least the thickness of the record than the horizontal position of the top surface, and It is designed to be driven via a belt 39 by a motor 38 supported by a bracket 37 attached thereto. 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 that is rotatably operated around a shaft 40, and an operating rod 43 of a plunger 42 is rotatably associated with the other end of the link 41. There is. In addition,
The roller 36 is located sufficiently below the horizontal position of the upper surface of the turntable 17, and when the plunger 42 is energized, the link 41 is automatically rotated to press the roller 36 against the roller 35. do. 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. It extends to the bottom of 17,
As shown in FIGS. 3 and 4, each of the two bending plates faces each other. In addition, these guide rails 44, 45
, 46, 47, rectangular cylindrical sliding members 48, 49, 50, 51 are loosely fitted and guided along these.
Furthermore, inside these sliding members 48, 49, 50, 51,
an L-shaped plate 53 that can freely rotate around the support shaft 52;
The inner sides of these upright pieces (on the center side of the turntable) to which 54, 55, and 56 are attached are 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 strings are attached to the pulley 7 rotatably mounted on the base plate 13.
4, 75, 76, 77 and 78, 79, and another roller 8 that guides the string in the vertical direction in a concentrated manner.
0, 81, 82, 83, and further the substrate 13
The above-mentioned turntable is inserted into a through-hole 84 bored in 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, and the above-mentioned 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 substrate 13. Therefore, one drive rotation of the motor 87 causes the sliding members 48, 49, 50, 51 to move on the turntable 1, respectively, against the springs 66, 67, 68, 69.
7 can be concentrated at a constant speed toward the center. Note that 89 in FIG. 4 is a detection switch that is closed when the sliding member reaches the outermost side of the substrate 13. Furthermore, a sensor 90 for detecting the insertion of the record 5 inside the auto player near the insertion/ejection opening 4;
91, 92, and 93 are arranged in an arc shape around the center of the turntable 17, and the sensor 9 from the center
The distance to 0, 91, 92, 93 is the L-shaped plate 53,
54, 55, 56 (i.e., the center side of the L-shaped plates 53, 54, 55, 56)
It is located in Reference numeral 94 is a sensor for detecting the size of the record disc 5, and when the record disc 5 placed on the turntable 17 is an LP disc, this is shielded, but when it is an EP disc, it is not shielded. The size of the record disc 5 is detected by electromagnetic or photoelectric changes caused by the disc.

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.

FIG. 5 shows the motor 38 controlled by the sensors 90, 91, 92, 93 and the sensors 95, 96;
9 is a drive circuit for the plunger 42 and motor 87;
7, 98, 99, 100 are the above sensors 90, 91, 9
It is an input terminal that receives a signal supplied depending on the operation of 2 and 93, and is connected to the input side of the 0R (logical sum) circuit 101,
Its output side is connected to one input side of an AND (logical product) circuit 102. Further, 103 and 104 are input terminals that receive signals supplied according to the operation of the sensors 95 and 96, and are connected to the 0R circuit 105, whose output side is connected to the other input side of the AND circuit 102 via the inverter 106. connected to. Further, the output side of this AND circuit 102 is connected to the motor 38 and plunger 42 via an amplifier 107. On the other hand, 108 is an AND circuit,
One input side is connected to the output side of the AND circuit 102 via an inverter 109, and the other input side is connected to the output side of the 0R circuit 105. Furthermore,
The output side of this AND circuit 108 is connected to the set input terminal of the set/set flip-flop circuit 110.
The output terminal Q is connected to the motor 87 of the concentration mechanism. 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. Furthermore, at the predetermined position where the record disc 5 is inserted, the entry of the record disc 5 is detected by the sensors 90 and 91.
. , 96 has not yet detected the entry of the record disc 5, so the 0R circuit 105
The signal on the output side of is! IOl is converted into a signal Vll by the inverter 106 and becomes a signal 111 on the output side of the AND circuit 102. In response to this signal, the amplifier 107 drives the motor 38 and plunger 42. A current is supplied. That is, in this case, the roller 35 is rotationally driven, and the plunger 42 is operated so that the roller 36 is brought into pressure contact with the roller 35, and the record disc 5 guided so as to be bitten between them. will be transported toward the turntable 17 side. Subsequently, the record disc 5 is carried deep into the autoplayer, and reaches a position where the sensors 90, 91, 92, and 93 are unshielded, and the sensors 95 and 96 are shielded. When such a state is reached, the output signal of the AND circuit 102 becomes 1?01f, the urging of the plunger 42 is released, the rotation of the motor 38 is also stopped, and the rotation of the rollers 35 and 36 is stopped. Carrying in the record disc 5 is stopped. On the other hand, due to the shielding of one of the sensors 95 and 96, the signal on the output side of the 0R circuit 105 is 1T! Then, this signal and the above AND circuit 1
The signal Q5Oll on the output side of 02 is converted by the inverter 109 into the signal 1P1, and the AND circuit 108
and obtains a signal 1WP1 at its output side, which inverts the set flip-flop circuit 110, and
Output signal 1 to Q terminal! l is obtained, and the motor 87 of the concentration mechanism is thereby driven. Accordingly, the strings 70, 71, 72,
73 is towed, and the sliding members 48, 49, 50, 51
is slid toward the center of the turntable 17 along the guide rails 44, 45, 46, 47, and the L-shaped plate 5
The record disc 5 is guided onto the turntable 17 so that the center of the record disc 5 pressed by the record discs 3, 54, 55, and 56 is over the center of the turntable 17,
In this way, a rough center positioning operation is performed. When this is completed, the biasing force of the plunger 29 is released, and the elevating rod 21 receives the elastic force of the coil spring 23 and descends straight down, pushing the protrusion 31 or 32 of the record holding plate 34 to the center of the record 5. Accurate centering is achieved by fitting the hole. When it is detected that the center positioning is completed, the motor 87 is driven to rotate in the opposite direction, and the strings 70, 71, 72, 73 are elasticized by the springs 66, 67, 68, 69. It is pulled back in response to the force, 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 then driven to rotate. The rotation speed of this 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. The well-known tone arm lead-in mechanism then operates. In addition, in the playing state, the peripheral part of the record 5 is not connected to the roller 3.
It is facing the bottom of 5. When the performance is finished, the tone arm is returned, and the record 5 is ejected (this operation can be arbitrarily selected by the switch group 3), first the plunger 29 is energized. Then, the elevating rod 21 is lifted, the protrusions 31 and 32 are disengaged from the record 5, the motor 16 is stopped, and the other motor 38 is controlled to rotate in a predetermined manner. At the same time, the plunger 42 is urged and the roller 36 is pressed against the roller 35 through the peripheral portion of the record 5. In this way, the record 5 is held between these two rollers 35 and 36 and moved toward the insertion/ejection port 4 in the opposite direction to the above, and at the point when the peripheral part of the record 5 reaches the notch 10. When the record disc 5 releases the shielding of the sensors 95 and 96, the motor 38 that rotationally drives the roller 35 is stopped and the roller 36 is pressed against the roller 35, that is, the plunger 42 is attached. release the force. Then, by pinching the periphery of the record in the notch 10 and pulling it out, the ejecting operation described above is completed. As explained above, when a recording disk is inserted into an autoplayer, the present invention operates a conveyance means to carry the recording disk into the autoplayer, and following the loading of the recording disk, the recording disk is transferred into the autoplayer. By activating the disk concentration means and loading the loaded recording disk onto the turntable so that its center hole coincides with the center of the turntable, the plurality of recording disks arranged in the recording disk guide path are loaded. The sensor can easily configure the loading of the recording disc onto the turntable, and the loading operation is performed smoothly and reliably, contributing to the smooth operation of the entire autoplaying system.

[Brief explanation of drawings]

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 an enlarged perspective view of the concentrated member of the record, and FIG. 5 is a circuit block diagram of the main part. 5... Recording disc, 17... Turntable, 35, 36... Roller (carrying means), 5
3, 54, 55, 56... Concentration means, 90, 9
1,92,93...Sensor, 95,96...
····sensor.

Claims (1)

[Claims] 1. When a recording disk is inserted into the autoplayer, the conveying means is activated to carry the recording disk into the autoplayer, and following the loading of the recording disk, the recording disk concentrating means is activated. A method for loading a recording disc in an auto player, characterized in that the loaded recording disc is loaded onto the turntable so that its center hole coincides with the center of the turntable.