JPS6299969A - Reproducing device for recording disk - Google Patents

Abstract

PURPOSE:To minimize the vibration of a signal reading section so that excellent reproduction can be carried out, by bringing the intersection of lines, each of which connects the diagonal supporting points of an oscillation isolating section, to almost the center of the working range of a signal reading section. CONSTITUTION:A turntable 59 which supports and rotates a disk 58, disk motor 61 which holds a taper ring 60 which positions the disk at its end, and reading pickup section 62 are provided. A unit plate 75 is hung from a chassis 8 by means of a spring 95 and isolated in oscillation from the chassis 8 by means of dampers 67-70 which are fitted and stuck to a damper holder. The dampers 67-70 are arranged in such a way that the intersection 76 of the line connecting the centers of the dampers 67 and 69 and line connecting the centers of the dampers 69 and 70 can almost be positioned on the line connecting the centers of the turntable 59 and reading pickup 62.

Description

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

[Conventional technology]

Conventionally, this type of mounting device for mounting a disc on a turntable under vibration conditions such as in a car - on the playback turret - automatically mounts the disc as described in the document Nikkei Mechanical (No. 13 April 1985). A method has been proposed.

[Problems to be Solved by the Invention] Depending on the supporting position of the vibration insulating section, vibrations may be amplified, leading to a problem of deteriorating signal reading performance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording disk reproducing apparatus which eliminates the drawbacks of the prior art and can reliably reproduce data under vibration conditions.

[Failure to solve the problem]

According to the present invention, in a vibration insulating section of a recording disk reproducing device, the intersection point connecting diagonal support points is aligned with approximately the center of the operating range of the signal reading section, so that the signal reading section is supported so that the vibration of the signal reading section is minimized.

[Effect]

With such a configuration, the vibration of the signal reading section is minimized and good reproduction can be performed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 14. FIG. 1A1y (Al is a diagram showing the main parts of the present invention, FIG. 2 is an external view of a recording disk device 7II to which the present invention is applied, in which a front panel 2 is provided at the front of the 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 with a substantially sloped surface is formed in the panel part. A mechanical section shown in FIGS. 1 to 14 is installed in the case 1 described above. The structure of this mechanical section will be explained with reference to FIGS. 1 and 3 to 14. are the same part.

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 It is inserted into a clutch slider 16 that is slidably attached to the chassis 80 in the front-rear direction and is biased forward by a spring 15. Also door link 1
The door 9 is biased in the closing direction by the zero beam a-z spring 17. One end of the clutch slider 16 is inserted into a pin 51 of the clutch link 30 that is pivotally supported by the shear 8, and the clutch link 30 rotates as the clutch slider 160 slides back and forth. On the other hand, the clutch link 50 and the other pin 29 are attached to the chassis 8,
The rack 27 is attached to the rear part of the right slide arm 24 which is slidable in the front-rear direction, has an elongated hole 25 and an elongated recess 26, and is biased backward by a spring 28.
It is inserted in 6. The drive gear 23 is connected to the chassis 81C.
From a motor gear 20 attached to a fixed motor 19, 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 gear 23 by rotation of the crack link 500.

Also, the rack stopper 32 is fixed to 7 palms 8&C.

When the rack 27 is engaged with the drive gear 25K and begins to move forward, the front end 35 of the rack 27 is at the position where the rack 27 is restricted from escaping downward, and when the right slide arm 24 has fully moved backward. It is arranged at a position where it does not come into contact with the rack 27 when it is lowered and disengaged from the drive gear 23.

Further, the front 4 portion 34 of the right slide arm 24 is slanted, and is pivoted on the chassis 8 and is attached to be rotatable in the vertical direction, so that when the right slide arm 24 rotates downward, the door 9 rotates inward. The door stopper 35 is fitted into the right bent portion 36 of the door stopper 35, which is placed in a position to prevent
When the door moves forward, the stopper link 37 is pushed up and the door stopper 55 is lowered. The stopper link 37 is always urged downward by a spring ``!'' 58. Also, the right slide arm 24 is provided with a vertical elongated hole 39, and the pin 4 fits into the elongated hole 39.
A rotating plate 41 on which a screwdriver 0 is attached is connected to a rotating shaft 42 whose both ends are supported by the chassis 8, and a rotating plate 44 having a bottle 43 is screwed to the left side.

Further, a left slide arm 46 having an elongated hole 45 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 to slide in the same direction as the right slide arm 24. The end portion 4 is arranged so that the up switch 47 is pressed when the .6 is fully moved backwards.
8 and an end 50 that pushes the chuck switch 49 when moving forward are provided on the left slide arm 46, and an L-shaped elongated hole 51 is provided with a lifting lever 5 that is pivotally supported on the side surface of the chassis 8.
Two bins 55 are fitted. Similarly, a pin 55 of a lift lever 54 pivotally supported on the surface of the chassis 8 is fitted into the right slide arm 24, and the lift levers 52 and 54 are provided with elliptic arc portions 56 and 57, respectively.

Also, a turntable 59 supports and rotates the disk 58.
and the positioning of the disc that is attached to the turntable 59&C so that it can be slid in the vertical direction? A disk motor 61 holding a taber ring 60 at its tip, a reading pickup s62, and a feeding mechanism (not shown since it is not directly related to the present invention) for moving the pickup section 62 in the front and rear directions are installed, and the chassis is mounted. The dampers 67 , 68 , 69 , 70 are fitted and bonded to the damper holders 65 , 64 , 65 , 66 fixed to the damper holders 65 , 66 fixed to the damper holders 8 .
, 74 are attached.

Furthermore, the line connecting the damper 67.690 center and 68°7
The intersection point 76 of the line connecting the 00 centers is the turntable 59 and the reading picker? Dampers 67, 68, 69, and 70 are appropriately positioned so as to be located approximately on the edge connecting the centers of the Pro 2, and the vibrations of the chassis 8 are transferred to the unit plate 75.
A clamper 80 is supported by shafts 77 and 78 at the rear of a unit plate 75 supported by the chassis 8, and is equipped with a magnet 79 facing the turntable 59, so that the clamper 80 holds it. A clamper holder 82, which is made of a plate spring and has an arm part 81 and is configured such that the arm part 81 pushes up the clamper 80 when the button contacts the inner surface 8' of the chassis 8, is attached, and the disc 58 is further mounted on the chassis 8 during transfer. A pressure roller 84 is pivoted at the front to be pressed against a transfer roller 85 that is pivoted at both ends, and a disk is pivoted at the rear by links 85 and 86 that are pivoted on a unit plate 75. A clamper arm 900 is formed by supporting shaft portions 88 and 89 of 87. Engagement pins 91 and 92 fixed on both sides of the clamper arm 900 are connected to holes 95 and 94 of the lever 8 so that engagement pins 91 and 92 can come into contact with the aforementioned lifting levers 52 and 54. It is set more prominently.

Further, the unit plate 75 is attached to the shear 78 by a spring 95.
When the clamper arm 90 rises, the vertical direction regulating bin 96 of the unit plate 75 is suspended on both sides.
, 97.98 are 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, 1 of the left slide arm 46, respectively.
01K is in contact with dFurthermore, when the disk is raised and lowered, a positioning pin 10 is placed slightly away from the outer diameter of the disk to prevent the disk from shifting in the forward direction.
A holder 105' is arranged in which a positioning device having a positioning ratio of 2/<-1 is supported on a shaft so as to be movable up and down. Further, the positioning lever 105 is connected to the pusher cam 1 which is pivotally supported on the chassis 8.
04, and the cam surface 10 of the cam 104 for brushing.
5 is fitted into the pin of the left slide arm 46 and its rotation is restricted. Further, the disk receiver 87 is always urged against the reunit plate 75@ by two springs 106.

It also has a large pulley 111 attached by an E IJ ring 110 to a machine shaft 109 that is connected in the rotational direction, and a large pulley 111 that is rotatable within a certain angular range with respect to the protrusion 107 of the drive gear. A belt 113 is placed between small pulleys 1120 that rotate the roller 83 by friction transmission. Further, the transfer α-roller 83 and the pressure roller 84 are made of rubber or the like, and rotation is transmitted between the core shafts 114 and 115 by friction to prevent scratches when the disk is fixed.

In addition, the unit plate 75 has bins 16 and 117 located concentrically with the center of the turntable 59 and slightly larger than the outer diameter of the disk, and the chassis 8 also has the bins 16 and 117 located directly below it at a similar distance. A photoelectronic sensor 118 is provided for sensing. Also, a sensor 11 detects when the disk is inserted from the door 9.
9 is provided, and a sensor 121 that detects the position of the door link 1o is also provided at the end 120 of the door link described above, the sensor 11B described above, the UP switch 47. Together with the chuck switch 49, a signal determination circuit (not shown) made up of a microcomputer is connected to a VC. Also disc motor 61! IK dynamic motor 1? , Bitsquag 62
The sylanger 13 is connected to a drive circuit (not shown),
Eject button 5. Play button 4. Other button 5
is 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 micro combinator (not shown).

Next, the operation will be explained. When playing the disc 5th, when the door 9 is pressed with the disc in the state shown in FIG. 5, the door link end 120 turns on the sensor 121. As a result, the plunger 15 is attracted by the control circuit, the drive motor 19 starts rotating at the same time as the door 9 is opened, the drive gear 23 and the large pulley 111 rotate counterclockwise, and the belt 115
, the small pulley 112 rotates the transfer α-ra 85 in the disk retraction direction. At this time, is rack 27 plunged? 1
3 and clutch slider 16. The drive gear 25 is out of engagement with the clutch link 50 (the eighth figure is bad). Subsequently, the disk 58 is retracted to block light from the sensor 18 (then the drive motor 19 stops and the plunger 15 is turned OFF. As a result, the door 9 is closed by the force of the spring 17. The force causes the clutch link 30 to rotate and rise and engage the drive gear 23 (state in Figure 9).Next, the control circuit (all the circuits described above) causes the drive motor 19 to reverse rotation and the drive gear 25 to rotate clockwise. At this time, even if the drive gear 23 is reversed, the rotation angle range of the elongated hole 108 of the large pulley 111 is within the convex portion 10.
Since 7 is not pressed, power is not transmitted and the large boob does not rotate. Therefore, the transfer Q-ra 83 does not rotate. The rack 27 moves forward to a position where it passes over the 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. Next, Putssiekam 1
04 rises, and the positioning lever 103 rises (the state shown in FIG. 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, pressure yII+:! - Since the roller 84 is lowered, the disk 58 is lowered, and the front positioning bin 102 and the side wall of the disk receiver 87 in the left and right direction, and the bin 116 in the rear direction. It is lowered in a substantially positioned state by the IB and placed on the turntable 59. Also, the front end portion 54 of this unique slide arm pushes up the stopper link 37,
Lower the door stopper 35 and cock the door 9 so that it does not open. At the same time, the clamper 80 presses down the disk 58, and the lower surface portions 99 of the left and right slide arms 24, 46,
Since 100 and 101 are separated from the bins 98 and 97 and 96, the unit plate 75 is released from its fixation and becomes free. Subsequently, the end 50 of the left slide arm 46 presses the chuck switch 49 (FIG. 11), so the drive motor 19 stops, the disk iron layer is completed, and then the control circuit causes the turntable 60. The big-up 62 becomes operational and starts playing (the state shown in FIG. 11).

Next, it is revealed when to stop the performance and take out disk 5El. When the eject button 3 is pressed, the control circuit stops the turntable 60, rotates the drive motor 19, and rotates the drive gear 23 counterclockwise. The rack 27 begins to move backward, and the left and right slide arms 24 and 46 begin to move backward. Next, the lower surface parts 99 and 100
, 101 are in contact with the bins 9B, 97.96, and the unit plate 75 is fixed so that it cannot move upward. Further, the raising levers 52 and 54 are connected to the left and right slide arms 24 and 46.
When the clamp arm 90 rotates as the disc 58 moves, the clamp arm 90 is pushed up and the crank 80 is separated from the disc 58.

At the same time, the door stop horn s5 is raised by the force of the spring 58. As the clamp arm 90 continues to rise, the disk receiver 87 moves the tip of the clamper holder 82 to the chassis 8.
, the cupper lever 80 is lifted, and the disc 5
8 is lifted from the turntable 60 and the pressure is 1 la-
A spring 106 forces the disc 58 against the transfer a-ra. (Situation shown in Figure 13).

Subsequently, the pusher 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 rack holder 32. This rear end portion 48 presses the up switch 47. The drive motor 19 is stopped by the control circuit, and the plunger 13 is turned on at the same time, which opens the door 9.
The clutch slider 16 moves rearward against the springs 15 and 17, rotates the clutch link 30, and moves the rack 27
Rotate it downward and release it from the drive gear 23. Subsequently, the drive motor 19 reverses, the drive gear 23 rotates clockwise, and the large pulley 111. Belt 113. Small pulley 11
2, the transfer a-roller 85 rotates in the disk ejecting direction and ejects the disk 58.

When the disk 58 passes the sensor 119, the control circuit stops the drive motor 19. At this time, the plunger 13 is turned off and the door is closed.

Further, in this embodiment, the plunger 15 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 15 is turned OFF.
It is obvious that it is easy to configure the disc so that the disc 5 is turned off and the door is closed, and in this way the door can be prevented from hitting the disc during ejection.

〔Effect of the invention〕

According to the present invention, no matter how each anti-silkworm supporting point vibrates, the amplitude of the signal reading section is minimized, so that the relative acceleration and displacement of the recording disk response reading section can be kept small. This has the effect of always providing stable and good playback.

[Brief explanation of drawings]

Figures 1A) and 1B are views showing the main parts of the present invention, Figure 2 is an external view of housing the device mechanism of an embodiment of the present invention, Figure 5 is a perspective view of the internal mechanism of Figure 2, Figure 4 is a left side perspective view of Figure 3, Figure 5 is a plan view of Figure 5, and Figure 1 is A-A in Figure 5.
1g arrow view, Figure 7 is the left side view of Figure 3, Figure 8 is the view from Figure 5.
Figure 9 is a right side view of the operation shown in Figure 6. Figure 10 is a left side view of the operation shown in Figure 3. Figure 11 is a left side view of the operation shown in Figure 3. 12 is a view taken along arrow B-BlfM in FIG. 5, FIG. 15 is a view during operation in FIG. 12, and FIG. 14 is an exploded perspective view of the vibration insulating section in FIG. 5. 59...Turntable 61...Disk motor 62...Reading pickup 67-70...Damper 75...Unit plate 71-74...Bin 7
6...Intersection Agent Patent Attorney Katsuo Ogawa Figure 1 2- Times 1 3 Shame 1 F;尤 10 Block l

Claims (1)

[Claims] 1. In a recording disc playback device consisting of a recording disc transport mechanism, a recording disc lifting mechanism, a recording disc clamping mechanism, and a recording disc signal reading unit provided in a vibration insulating part, the diagonal support points of the vibration insulating part are connected. 1. A recording disk reproducing device characterized in that a signal reading section is supported so that the intersection point of the signal reading section is approximately at the center of the operating range of the signal reading section.