JPS5822282Y2 - Concentrating device for recording disks in autoplayer - Google Patents

Description

[Detailed description of the invention] The present invention relates to a recording disk concentrating device in an auto player, and in particular, a concentrating member that locks onto the recording disk and centrally guides it onto a turntable. This device is made to stand up so as to hold the periphery of the disk, and is retracted and tilted when not in intensive guidance, thereby smoothing the loading and unloading of the recording disk.

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 easily controlled from the outside. It is now possible to check.

Reference numeral 3 denotes a group of switches for automatically operating the auto player, and display operation modes such as auto repeat and auto eject.

Reference numeral 4 indicates insertion and dislocation of the record disc 5 provided at the front of the housing 2. 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, and in particular, the lower plate 7 is inserted into and dislocated from the upper plate. As shown in FIG. 2, a relatively deep cutout 10 is provided extending forward from the cutout 6 so that a record can be easily inserted and removed.

In addition, in order to smoothly insert the record board 5, the upper and lower boards 6 are
, 7 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 is an electrical circuit box 1 that performs various controls using the electrical switch group 3.
4.15 is provided.

16 is a turntable 1T attached to the bottom of the board 13
This is a driving motor, and no center spindle is provided on the turntable 1T.

On the other hand, 18 is a bracket attached to the lower surface of the casing 1, and a through hole 19 is bored in the horizontal part of this bracket 18, and a split bottle 20 is fitted in the upper end of this through hole 19. The rod 21 is slidably inserted, and this elevating rod 21
A coil spring 23 is interposed between a locking ring 22 such as an E-ring fitted to the midsection and the horizontal portion of the bracket 18, and this coil spring 23 constantly controls the lifting rod 21. It is biased downward.

Reference numeral 24 denotes a pin installed horizontally in the lower part of the ring 22 on the lifting rod 21, and one end of a link 26 rotatable around a shaft 25 is attached to the pin 24 so as to lift the pin 24. is engaged in.

Further, the other end of the link 26 faces one end of a single-shaped link 28 that is rotatable about a shaft 27, and the other end of the single-shaped link 28 is rotatably attached to an operating rod 30 of the plunger 29. installed.

That is, by the urging of the plunger 29, the elevating rod 21 is lifted upward via the cross-shaped link 28 and the link 26.

On the other hand, a protrusion 31 that fits into the center hole of the LP record;
A protrusion 32 that is continuous with this and can fit into the center hole of the donut disk
A record presser plate 34, which includes a protrusion 33 projecting from the periphery of the protrusion 32, is rotatably attached to the lower end of the elevating 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 is fitted into the center hole of the record 5 on the turntable 17,
By pressing this, the rotation of the turntable 1T is reliably transmitted to the record disc 5.

Next, 35 and 36 insert the record 5 into the insertion/ejection opening 4 as described above.
It is a roller for pulling the record 5 from the outside to the inside and from the inside to the outside, and its surfaces are processed so that the pull-in operation can be performed reliably and safely without damaging the record 5. From the standpoint of preventing static electricity, carbon powder mixed rubber or the like is used.

The roller 35 is attached to a predetermined portion of the casing 1 or 2 so that its circumferential surface faces at least the thickness of the record disc beyond the horizontal position of the upper surface of the turntable 17. It is driven via a belt 39 by a motor 38 supported by a bracket 37 attached to a predetermined location within the body 1.

However, it is also optional to adopt a configuration in which the motor 38 directly drives the motor 38.

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.

Note that the roller 36 is located sufficiently below the horizontal position of the upper surface of the turntable 11, and when the plunger 42 is energized, the link 41 is automatically rotated to move the roller 3
6 is pressed against the roller 35.

On the other hand, on the upper surface of the substrate 13, four
Book guide rails 44, 45, 46, 47 are attached, and these guide rails 44, 45, 46, 47 extend from the outer edge of the board 13 to the bottom of the turntable 17, as shown in FIGS. As shown in Fig. 4, each of the two bending plates faces each other.

Also, this guide rail 44.45. 46. Inside 47, there is a rectangular cylindrical sliding member 48 guided along these.
49, 50, and 51 are loosely fitted.

Further, inside the sliding members 48, 49, 50° 51, there are L-shaped plates 53, 5 that can freely rotate around the support shaft 52.
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.

In this way, the sliding members 48, 49, 50, 51 move on the board 13 along the guide rails 44, 45, 46, 47.
When guided along the above-mentioned cross-shaped plates 53,54°5
5.56 parallel sides 53a, 54a, 55a.

The lower surface of 56a also slides on the substrate 13,
In addition, the upright piece is also moved in a straight upright state.

On the other hand, among the L-shaped plates 53, 54, 55° 56, the L-shaped plate 53, 54 located on the side of the insertion/ejection port 4 is connected to the sliding member 48.
, 49, 50, 51 are springs 66, 67, which will be described later.
When the parallel sides 53a and 54a are retracted most outwardly due to the forces of 68 and 69, the parallel sides 53a and 54a are located near the insertion/removal port 4 due to their own weight and correspond to the ends of the guide rails 44 and 45. A through hole 1 bored in the substrate 13 at a position where
3a, and from the state shown in Fig. 5 to the 6th
It is rotated clockwise about the support shaft 52 to the state shown in the figure.

That is, in such a state, the above-mentioned cross-shaped plates 53, 54,
55 and 56 maintain a position and a tilted state that do not prevent the insertion of the record 5 from the insertion/ejection opening 4.

Next, 58, 59, 60, 61 are the sliding members 48.4
9, 50, and 51, and these strings are connected to the pulley 6 rotatably attached to the base plate 13.
2, 63, 64, 65 to one end of the springs 66, 67, 68, 69 attached to the appropriate positions of the board 13, and the sliding members 4B, 49, 50, 51 are always connected to the turntable 17. The substrate 13 is biased outward in the direction of separation.

On the other hand, in front of the sliding members 48, 49, 50, 51, there is a spring 66. 67. A string 70 constituting a means for pulling the turntable 17 toward the center of the turntable 17 against 68 and 69;
71, 72, 73 are fixed to pulleys 74, 75, 76, 77 rotatably mounted on the base plate 13.
and other rollers 80, 81, 82, 83 that guide the edges in the vertical direction so as to concentrate them through 78° and 79, respectively.
and is further inserted into a through hole 84 bored in the substrate 13 and a pipe 85 provided so as to communicate with the hole 84, and in this pipe 85, these are converged into a single piece, and are placed under the substrate 13. One end is fixed to a pulley 88 attached to the rotating shaft of the motor 8T via a rotatably attached pulley 86.

Therefore, due to the driving rotation of the motor 87, the sliding member 4 is moved against the spring 66, 67, 68° 69.
8, 49, and 50 degrees 51 can be concentrated toward the center of the turntable 17 at a uniform speed.

In FIG. 4, 89 is a detection switch that is closed when the sliding member reaches the outermost part of the substrate 13.

Further, inside the vicinity of the insertion/ejection opening 4 of the auto player, there are sensors 90, 91, 92, 93 for detecting the insertion of the record 5 in a circle centered around the center of the turntable 17. The sensors 90, 91, 92, and 93 are arranged in an arc shape, and the distance from the center to the sensors 90, 91, 92, and 93 is sufficiently shorter than the distance to the cross-shaped plates 53, 54, 55, and 56 (i.e., 53, 54, 55, 5
6).

94 is a sensor for detecting the size of the record 5, and the record 5 placed on the turntable 17 is an LP.
This is shielded when it is a record disc, while it is not shielded when it is an EP disc, and the size of the record disc 5 is detected by electromagnetic or photoelectric changes due to these differences.

Sensors 95 and 96 are placed near the turntable 17, and are used to prevent another record from being erroneously inserted while the record 5 on the turntable 11 is being played.

Next, in the auto player configured as above,
The operation will be explained in order.

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.

At the predetermined position where the record 5 is inserted, the entry of the record 5 is detected by the sensors 90, 91, 92, 93.
is detected, the motor 38 is driven and the roller 35 is rotated, and the plunger 42 is actuated so that the roller 36 contacts the upper roller 35 via the link 41 and is driven to rotate.

In this way, the record 5 with its tip reaching the lower part of the roller 35 is held between these two rollers 35 and 36 and drawn toward the turntable 17. .

During this retraction, when the record 5 releases the shielding from the sensors 90, 91, 92, 93, the drive of the motor 38 and the biasing of the plunger 42 are released, and the A motor 87 is driven to drive the edge 70 via the pulleys 88 and 86.
, 71, 72, 73 are towed, and the sliding members 48, 4
9, 50, 51 are guide rails 44, 45, 46, 47
is slid toward the center of the turntable 17 along
The center of the record 5 that is engaged and pressed by the claw piece 51 provided at the tip of the upright piece, which is one piece of the L-shaped plate 53, 54, 55, 56, comes to be over the center of the turntable 17. The record 5 is guided onto the turntable 17 in this manner, and a rough center positioning operation is performed.

In addition, at the beginning of pulling the edge 70° 71, 72, 73, the parallel sides 53a, 54a of the L-shaped plate 53, 54 float so as to be gradually lifted at the opening edge of the through hole 13a. Therefore, the upright piece rises, scoops up the periphery of the record 5 that has been guided to a predetermined position from the outside along the curved portion following the claw piece 57, and is operated to further restrain it downward.

Therefore, in order to further facilitate the concentrated movement of the record disc 5 and to securely clamp the record disc 5 from the outside, the above-mentioned cross-shaped plates 53 and 54 must be provided sufficiently outwardly. It can be installed somewhat closer to the turntable 17, and the installation space for these L-shaped plates 53, 54 can be made narrower.

That is, the length of the guide rails 44, 45 can be increased.

When this is completed, the biasing force of the plunger 29 is released, the elevating rod 21 immediately descends under the elastic force of the coil spring 23, and the protrusion 3 of the record holding plate 34
1 or 32 to the center hole of the record 5, and very accurate center positioning is achieved.

When it is detected that this centering has been completed, the motor 8T is driven to rotate in the opposite direction to the above, and the strings 7G, 71, 72.73 are moved around the springs 66°, 67.
68 and 69, the sliding members 48, 49, 50, and 51 are retracted in the circumferential direction.

At this time, the parallel sides 53a and 54 of the above-mentioned cross-shaped plates 53 and 54
a sinks into the through hole 13a as described above.

When the switch 89 detects the withdrawal, the motor 16 is then driven to rotate.

The rotational speed layer of this motor 16 is the same as that of the turntable 1.
When the sensor detects whether the record 5 on the top of the record 7 is an LP or an EP, its rotational speed is automatically determined, and then the well-known lead-in mechanism of the tone arm is activated. Operate.

In the listening and playing state, the peripheral portion of the record 5 faces the lower part of the roller 35.

When the performance is finished, the tone arm is returned, and the record 5 is ejected (this operation can be arbitrarily selected using the switch group 3), first the plunger 29 is energized. Then, the elevating rod 21 is lifted and the protrusion 31.3 is moved against the record 5.
2 is disengaged, the drive of the motor 16 is stopped, and the other motor 38 is driven to rotate in the opposite direction to the above, and the plunger 42 is energized so that the roller 36 is rotated. The peripheral portion of the record 5 is pressed by the roller 35 .

The record 5 is thus moved between these two rollers 35.3.
6 and moved toward the insertion/ejection port 4, when the peripheral part of the record 50 reaches the notch 10, and when the record 5 releases the shielding for the sensors 95 and 96, Locking of the motor 38 that rotationally drives the roller 35 and the roller 3 relative to the roller 35
6, that is, the biasing of the plunger 42 is released.

Then, the ejecting operation described above is completed by pinching the periphery of the record in the notch 10 and pulling it out.

By the way, in the present invention, the above-mentioned cross-shaped plates 53, 54
, 55, 56 are the previously described sensors 90, 91, 92, 9
3, the distance from the center of the turntable 17 is selected to be relatively far.

This means that the record 5 is connected to these sensors 90, 91, 9.
2,93, the insertion was detected, and the above-mentioned Lonilla 35
is driven, and the record 5 is placed between the roller 36 and the roller 36.
is pulled toward the turntable 17 while being held, and during this pulling process, when the shielding of the sensors 9G and 91.92° 93 by the record 5 is completely released, that is, when the record 5 When the record 5 is brought to a convenient position for holding and concentrating on the turntable 17, the above-mentioned cross-shaped plate 5
3°54, 55, and 56 can perform concentrated movements.

In this way, the above-mentioned cross-shaped plates 53, 54, 55.degree. 56 allow smooth concentrated movement of the record 5 on the turntable.

Next, FIG. 7 shows another embodiment of the concentration member 54,
This is bent in a step-like manner as a whole, so that when the parallel side 54a faces the through hole 13a, it is reliably depressed into the through hole 13a by the weight of the concentrated member. A large rotational moment is applied clockwise about the support shaft 52.

Although the above description has been made regarding a device for playing a record disc, the present invention can be similarly applied to a device for playing a recording disc such as a video disc on which predetermined video signals and audio signals are recorded.

As mentioned above, the present invention provides an autoplayer that automatically guides a recording disk inserted laterally from an insertion/ejection opening onto a turntable. a guide rail, a sliding member disposed on each of the guide rails guided by these guide rails and slidable on a board supporting these guide rails, and a sliding member rotatably disposed within the sliding member. an L-shaped plate, a biasing means that constantly biases the sliding member in a direction to pull it away from the turntable, and the recording disk is engaged with a piece of the L-shaped plate against the biasing means. means for pulling the sliding member toward the center of the turntable after the sliding members are aligned; When the above-mentioned cross-shaped plate is positioned in the hole, it rotates due to its own weight,
At least a portion of this L-shaped plate is sunk into the through hole, so that the L-shaped plate for centrally operating the recording disk can be used to concentrate operations on the turntable following insertion of the recording disk into the insertion/ejection opening. In addition to being easy to operate, it remains in a predetermined position and tilts except during concentrated operation, and does not interfere with the loading and unloading of the recording disc, making it possible to ensure various operations during automatic performance of the recording disc. There are various effects such as.

[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. Figure 4 is an enlarged perspective view of the installation of the L-shaped plate for centrally operating the record disc, and Figures 5 and 6 are enlarged cross-sectional views of the main parts showing changes in the operation of the L-shaped plate. . Moreover, FIG. 7 is an enlarged sectional view of another embodiment of the same doglegged plate. 4... Insertion/removal port, 5... Record disc, 13... Board, 17... Turntable, 13a... Through hole provided in board 13, 44, 45, 46, 47... Guide Rail, 48.49,50,51...Sliding member, 53,5
4゜55.56...L-shaped plate, 66.67.68,6
9... Spring, 70, 71. 72, 73... Strap for pulling the sliding member.

Claims (1)

[Scope of utility model registration request] In an autoplayer that automatically guides a recording disk inserted laterally through insertion and dislocation onto a turntable, a plurality of guide rails arranged in the radial direction of the turntable and these guide rails are provided. a sliding member disposed on each of the guide rails guided by the guide rails and slidable on the substrate supported by the guide rails; an L-shaped plate rotatably disposed within the sliding member; a biasing means for constantly biasing the sliding member in a direction to pull it away from the turntable; A through hole is provided in the board located near the insertion/ejection opening and corresponds to the end of the guide rail, and the cross-shaped plate is inserted into the through hole. A recording disk concentrating device in an auto player, which rotates by its own weight when positioned so that at least a part of the L-shaped plate is sunk into the through hole.