JPS6299949A - Loader for recording disc - Google Patents

Abstract

PURPOSE:To prevent position shift of a disc by providing a relief mechanism to a drive pulley so as not to interlock an elevating/descending mechanism and a carrying mechanism at the loading of a recording disc. CONSTITUTION:In opening a door, a drive motor starts driving, a gear 23 and a large pulley 111 are turned counter clockwise and a carrying roller 83 is driven in disc loading direction by a belt 113 and a small pulley 112. In this case, the meshing of a rack 27 is released from the driven gear 23. A disc 58 is pulled in succeedingly, the drive motor is stopped, the rack 27 meshes with the drive gear 23, the drive motor is reversed by a control circuit to drive the drive gear 23 clockwise. Since the large pulley 111 does not depress a projection 107 in the turning angle range of an oblong hole 108, no power is delivered, then the large pulley is not driven. Thus, the carrying roller 83 is not driven, the rack 27 is moved forward and the disc 58 is descended.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mounting device for recording discs such as compact discs and video discs, and is suitable for mounting onto a turntable reliably even under vibration conditions such as in a vehicle. This invention relates to a recording disc mounting device Et.

[Conventional technology]

Conventionally, a method has been proposed in which a disc is automatically mounted on a turntable for playback under vibration conditions such as when used in a car, as described above.

[Problem that the invention seeks to solve]

However, in the conventional method, when lowering the disk by also using it as a disk transport roller, no consideration is given to stopping the roller to prevent the disk from slipping.
It was.

1] The object of the present invention is to provide a recording disk device which eliminates the disadvantages of conventional liquids and which can be installed and reproduced reliably at low cost.

[Means for solving problems]

The present invention achieves IAE by providing an escape mechanism in the drive boot section so that the elevating mechanism and the transport mechanism are not interlocked when the recording disk is mounted.

[Effect]

Disc position error can be prevented.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained with reference to the 11th sentence of the whistle 11. FIG. 1 is a diagram showing the main parts of the present invention, including a front panel 2 provided at the front of a case 1, an eject button 3. A play button 4, other operation buttons 5, an operation display tube 6, etc. are attached, and a disk insertion hole 7 having a substantially inclined surface is formed in the panel portion. The mechanical parts shown in FIGS. 1 and 3 to 14 are installed in the case 1 described above. The structure of the mechanism will be explained with reference to FIG. 1 and FIGS. 6 to 14. Components with the same reference numerals are the same parts.

A door 9 rotatably supported by the chassis 8 is arranged close to the disk insertion hole 7 so as to close it. chassis 8
A pin 11 portion of a door link 10 pivotally supported is slidably engaged with the right end of the door 9, and a door link pin 12 is fitted into a movable piece 14 of a plunger 13 mounted on the chassis 8, and The clutch slider 16 is slidably attached to the chassis 8 in the front-rear direction and is inserted into a clutch slider 16 that is biased forward by a spring 15. Also door link 1
0 is biased by a close spring 17 in the direction in which the door 9 is closed. One end of the clutch slider 16 is inserted into a pin 31 of a clutch link 30 that is pivotally supported by the chassis 8, and as the clutch slider 16 slides back and forth, the clutch link 50 rotates. On the other hand, the pin 29 at the other end of the clutch link 30 is attached to the chassis 8,
The recess 2 of a rack 27 is attached to the rear part of the right slide arm 24 that is slidable in the front-rear direction, has an elongated hole 25 and an elongated recess 26, and is biased rearward by a spring 28.
It is inserted in 6. The drive gear 23 is connected from a motor gear 20 attached to a motor 19 fixed to the chassis 8 to a reduction gear 21 . Power is transmitted through the worm gear 22, and the rack 27 is arranged so as to be able to engage and separate from the drive gear 23 by rotation of the crack link 30.

Further, the rack stopper 32 is fixed to the chassis 8, and is at a position where the rack 27 engages with the drive gear 23 and restricts the rack 27 from escaping downward when the rack 27 starts to move forward, and the right slide arm 24 is in the rearward direction. When the movement is complete, rack 27
The front end 33 is lowered downward and is located in a position where it does not come into contact with the rack 27 when the mesh is out of the drive gear 23.

Further, the front end 34 of the right slide arm 24 is slanted, and is pivotally supported by the chassis 8 and is attached to be able to rotate in the vertical direction, and prevents the door 9 from rotating inward when the right slide arm 24 rotates downward. It fits into the right bent portion 36 of the door stopper 65 placed in the blocking position, comes into contact with the lower surface of the stopper link 37 that is pivotally supported by the chassis 8, and the right sliding arm 24
When the door moves forward, the stopper link 37 is pushed up and the door stopper 35 is lowered. Further, the stopper link 57 is always urged downward by the spring 68.

Further, the right slide arm 24 is provided with a vertically elongated hole 39, and a rotating plate 41 fitted with a bottle 40 that fits into the elongated hole 39 is connected to a rotating shaft 42 whose both ends are supported by the chassis 8. A rotating plate 44 having a bin 46 is screwed to the left end.

Further, a left slide arm 46 having 45 elongated holes that fits into the bin 43 is attached to the chassis 8 so as to be slidable in the front-rear direction, and is arranged so as to slide in the same direction as the right slide arm 24. The uniformly arranged end portions 4 press the amplifier switch 47 when the
8 and the end 50 that presses the chuck switch 49 when moving forward? , provided on the left slide arm 46, and in an L-shaped elongated hole 51 is a lifting lever 5 pivotally supported on the side surface of the chassis 8.
Two bins 53 are fitted. Similarly, a pin 55 of a lift lever 54 pivotally supported on the side of the chassis 8 is fitted to the right slide arm 24, and the lift levers 52 and 54
Arc portions 56 and 57 are provided respectively. Further, a turntable 59 supports and rotates the disk 58, a disk motor 61 holds a tapered ring 60 at its tip for positioning the disk, which is attached to the turntable 59 so as to be slidable in the vertical direction, and a disk motor 61 for reading. A damper holder 65, 64, 65, which is equipped with a pickup section 62 and a feeding mechanism g (not shown since it is not directly related to the present invention) for moving the pickup section 62 in the front-rear direction, is fixed to the chassis 8. A unit plate 75 having pins 71, 72, 73, and 74 is attached so as to be vibration insulated from the chassis 8 by dampers 67, 68, 69, and 70 which are fitted and bonded to the chassis 8.

Furthermore, the line connecting the centers of damper 67.69 and 6870
The intersection point 76 of the line connecting the centers of is the center of the turntable 59 and the reading pickup 62? Dampers 67, 68, 69, and 70 are appropriately arranged so as to be located approximately on the connecting line, and dampers 67, 68, 69, and 70 are appropriately arranged at the rear of the unit plate 75 supported by the chassis 8 so that vibrations of the chassis 8 are difficult to be transmitted to the unit plate 75. A clamper 80 is supported by shafts 77 and 78 and has a magnet 79 mounted thereon facing the turntable 59, and an arm 81 for holding the clamper 80. When the clamper 80 comes into contact with the inner surface 8' of the chassis 8, The arm portion 81 is the clamper 8
08 Clamper holder 82'f made of a leaf spring configured to push up: Attached to the clamper holder 82'f, a pressure roller 84 is pivotally supported at the front to press the disk 58 against a transfer roller 86 whose both ends are pivotally supported by the chassis 8 during transportation. A retaining pin is fixed to both sides of the clamper arm 90, which has shaft portions 88 and 89 having a disk outer diameter 87, which are supported by links 85 and 86 that are supported at one end by a unit plate 75. 9
1.92 is provided to protrude from the hole 93.94 of the chassis 8 so as to be able to come into contact with the aforementioned lifting lever 52.54.

Further, the unit plate 75 is attached to the chassis 8 by means of a spring 95.
When the clamper arm 90 is raised, the vertical direction regulating bin 96. of the unit plate 75 is suspended on both sides.
97.98 is tightened, and the left and right slide arms 24
, 46 move forward, the lower surface portion 99 of the right slide arm 24 and the lower surface portion 100.10 of the left slide arm 46, respectively.
1. Furthermore, a holder 103' is attached which pivotally supports a positioning lever 103 having a positioning pin 102 placed slightly away from the outer diameter of the disk to prevent the disk from shifting in the forward direction when the disk is raised or lowered. are doing. Further, the positioning lever 103 is placed below a bushing cam 104 that is pivotally supported by the chassis 8, and a cam surface 105 of the bushing cam 104 is fitted into a pin of the left slide arm 46 to restrict its rotation. Further, the disk receiver 87 is always urged toward the unit plate 75 by two springs 106. It is also rotatable within a certain angle range with respect to the convex portion 107 of the drive gear ←−
The large pulley 11 has an elongated hole 108 so that
1 and a small pulley 112 that rotates the transfer roller 83 by friction transmission. Further, the transfer roller 85 and the pressure roller 84 are made of rubber or the like, and the core shaft 114. Between 115 and 115, rotation is transmitted by friction, and there are scratches when the disc is fixed? It is designed to prevent

The unit plate 75 also has a bin 116 at a position n concentrically above the center of the turntable 59 and slightly larger than the outer diameter of the disk. 117 is attached to the chassis 8, and a photoelectronic sensor 118 is also provided on the chassis 8 at a similar distance to detect the presence or absence of light interruption directly below. Sensor 1 detects when the disk is inserted approximately halfway through door 9.
A sensor 121 for sensing the position of the door link 1o is also provided at the end 120 of the door link 1 described above, and a sensor 121 for sensing the position of the door link 1o is provided. UP switch 47. Together with the chuck switch 49, it is connected to a signal determination circuit (not shown) made up of a microcomputer. Also, a disk motor 61, a drive motor 19. Pickup 62. Plunger 13 is connected to a drive circuit (not shown) and is connected to eject button 5. Play button 4. The other buttons 5 are connected to a signal determination circuit, and the display tube is connected to a display circuit (not shown), both of which are controlled by a microcomputer (not swollen).

Next, the operation will be explained. When playing disc 58'e, press door 9? with the disc in the state shown in Figure 3. When pressed, the door link end 120 turns on the sensor 121. As a result, the plunger 13 is sucked by the control circuit, the drive motor 19 starts rotating at the same time as the door 9 is opened, and the drive gear 25
and the dog pulley 111 rotates counterclockwise, and the bell) 1
13, the small pulley 112 rotates the transfer roller 83 in the disk retraction direction. At this time, the rack 27 includes the plunger 13, clutch slider 16, and clutch link 5.
0, the engagement gear is disengaged from the drive gear 23 (eighth state). Subsequently, the disk 58 is retracted, and the sensor 11
8, the drive motor 19 stops and the plunger 13 is turned off. As a result, the door 9 is closed by the force of the spring 17. In addition, the clutch link 50 rotates and rises due to the force of the spring 15, and the rack 27 is connected to the drive gear 23.
(state in Figure 9). Next, the control circuit (the +p
+ road) causes the drive motor 19 to reverse rotation, and the drive gear 2
5 rotates clockwise. Furthermore, this extra large boo 9111
[Even if the moving gear 123 is reversed, the rotation angle range of the elongated hole 108 is the convex portion 107? Since it is not pushed, there is no power transmission, so the large boob does not rotate. Therefore, the transfer roller 83 does not rotate. The rack 27 moves forward to a position where it overcomes the rack stopper 32. After that, the elongated hole 25 pushes the right slide arm 24. As a result, the right slide arm 24 starts moving forward, and the rotating plate 41 also rotates, so that the left slide arm 46 also moves forward at the same time. Subsequently, the bushing cam 104 rises and the positioning lever 103 rises (
(Situation shown in Figure 9).

As the lifting levers 52 and 54 rotate, the clamp arm 90 is lowered, and the disk receiver 87 is also lowered by the force of the spring 106. At the same time, since the pressure roller 84 descends,
The disk 58 is lowered, and the front side positioning bin 102, the side wall of the disk receiver 87 in the left and right direction, and the bin 11 in the rear direction.
6. 117, it is lowered in a substantially positioned state and placed on the turntable 59. Also, the front end 64 of this unique slide arm pushes up the stopper link 37, making it a door stopper! Lower +51 and lock door 9- from opening. At the same time, the clamper 80 presses down the disk 58, and the lower surfaces 99 of the left and right slide arms 24, 46. 1
00. 101 separates from the bins 98, 97, and 96, the unit plate 75 is released from its fixation and becomes free. Next, the end 50 of the left slide arm 46 presses the chuck switch 49 (FIG. 11), so the drive motor 19
stops, disk loading is completed, and then the control circuit puts the turntable 60° pickup 62 into operation and starts playing (the state shown in FIG. 11).

Next, a description will be given of the first time when the performance is stopped and the disc 58 is removed. When the eject button 5 is pressed, the turntable 60 is stopped by the control circuit, the drive motor 19 is rotated,
Rotate the drive gear 23 counterclockwise. The rack 27 begins to move rearward, and the left and right slide arms 24, 46 begin to move rearward. Next, the lower surface part 99. 100
, 101 is a bottle? 8.97.96 and Ninia)
The plate 75 is horizontally fixed so that it does not move upward.

Furthermore, the raising levers 52 and 54 are connected to the left and right slide arms 2.
When rotating with the movement of 4 and 46, the clamp arm 9
0 is pushed up, the clamper 80 is moved away from the disk 58, and at the same time, the door stopper 35 is raised by the cover spring 38. Subsequently, as the clamp arm 90 rises, the disk receiver 87 brings the tip of the clamper holder 82 into contact with the chassis 8, the clamper 80 is lifted, the disk 58 is lifted from the turntable 60, and the pressure roller 84 moves the disk 58 by the spring 106. Press it against the roller (as shown in Figure 13).

Subsequently, the bushing cam 104 is pushed down by the left slide arm 46, and the positioning lever 103 is lowered.

Furthermore, the rack 27 moves rearward to a position away from the rank holder 32. This rear end 48 is the up switch 47
Press. The drive motor 19 is stopped by the control circuit, and at the same time, the plunger 13 is turned on. As a result, the door 9 opens, the clutch slider 16 moves rearward against the springs 15 and 17, rotates the clutch link 60, rotates the rack 27 downward, and disconnects it from the drive gear 26. Subsequently, the drive motor 19 reverses, the drive gear 23 rotates clockwise, and a large boom occurs.
, the transfer roller 83 rotates in the disc ejection direction via the small pulley 112, and the disc 58 is ejected.

When the disk 58 passes the sensor 119, the control circuit stops the drive motor 19. At this time, the plunger becomes 1320 FF and the door closes.

Further, in this embodiment, the plunger 16 is turned OFF at this time, but the plunger 13 is left ON, and when the disk moves away from the sensor 118, the plunger 16 is turned OFF.
It is obvious that it is easy to configure the disc to be 3'EOFF and close the door, and in this way the door can be prevented from hitting the disc during ejection.

〔Effect of the invention〕

According to the present invention, by simply drilling a long hole in the drive pulley, the interlock between the disk transfer mechanism and the lifting mechanism during lifting can be released, the rotation of the transfer roller can be stopped, and the disk can be prevented from moving in unnecessary directions. This has the effect of ensuring reliable installation without malfunction.

In addition, since it has a simple structure, it has a large economical advantage. Furthermore, since the transfer roller does not rotate during the ascent and descent, there is an effect of preventing damage to the disk.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the main parts of the present invention, Fig. 2 is an external view accommodating the device mechanism of an embodiment of the present invention, Fig. 3 is a perspective view of the internal machine list of Fig. 2, and Fig. 4 is a diagram showing the main parts of the present invention. 3 is a left side perspective view, FIG. 5 is a plan view of FIG. 6, FIG. 6 is a view taken along the line A-A in FIG. 5,
Fig. 7 is a left side view of Fig. 3, Fig. 8 is a right side view of Fig. 6 during operation, Fig. 9 is a right side view of Fig. 3 during operation, Fig. 10
The figure is a left side view of the state shown in FIG. 5 during operation, FIG. 11 is a left side view of the state shown in FIG. FIG. 12 is an operating time, and FIG. 14 is an exploded perspective view of the vibration isolation section of FIG. 6. 19...Motor 23...Drive gear 27...Rack 107...Protrusion 108...Long size 111...Large pulley 113...Belt 85...
・Transfer roller

Claims (1)

[Claims] 1. In a recording disc playback device comprising a recording disc transport mechanism, a recording disc lifting mechanism, a recording disc clamping mechanism, and a recording disc reading mechanism, the driving unit of the transporting mechanism and the driving unit of the lifting mechanism are common, and A recording disc mounting device characterized by having play in a power transmission part.