JP2650621B2 - Disk unit - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device such as a compact disk or a video disk, and more particularly to a disk clamp for saving space, reducing vibration and reducing noise. Related to the structure of the mechanism. 2. Description of the Related Art A conventional apparatus of this type is described in Nikkei Mechanical (1985-4-8). [0003] However, in the conventional method, consideration is given to space saving of the clamper portion (clamp member) and reduction of unnecessary noise caused by vibration when the clamper is raised (when not clamped). Did not. [0004] It is an object of the present invention to provide a mechanism which eliminates the disadvantages of the prior art and saves space. [0005] The present invention provides a rotary drive unit.
(One embodiment code 59, 60) Turntable (one embodiment)
A clamper for clamping the disc to the example code 59),
A first base unit provided with the rotation drive unit (reference numeral 7 in one embodiment)
5) When the disk is clamped, vibration
A second base portion supporting the first base portion through an impinging means
(8, 8 'of the embodiment), the outer periphery of the structure is separated by a predetermined distance in the rotation axis direction.
In which the first and second flange portions are formed at different positions.
Damper (one embodiment code 80) and the elastic
Leaf spring supporting the unclamped state with original force (one embodiment
82), one end of which is substantially line-symmetric.
A first pair of arm portions projecting inward in a plane, and a flat
A leaf spring having a second pair of arm portions projecting in a planar shape;
The second pair of arms fixed to the second pair of arms of the leaf spring
And the outer periphery of the clamper together with the first and second flanges.
A first base having a configuration surrounding the flanges
Movement of the lock member for locking the portion to the second base portion
The movable arm part which is displaced in conjunction with the work (one embodiment code 9)
0), and in the unclamped state,
The leaf spring has the other end side facing the second base portion.
(Example code 8, 8 ') and the first
The pair of arm portions abuts on the first flange portion and
The movable arm portion elastically supports the
The spring comes into contact with the flange and resists the elastic restoring force of the leaf spring.
The disk clamp surface to the turntable surface
A clamper support that is configured to lock so that it is almost parallel
Holding means (one embodiment reference numerals 82 and 90) . When the clamp is not clamped , the other end of the leaf spring is
The first paired arm is raised while being supported by the second base.
The clamper is elastically supported by contacting the first flange.
The movable arm portion abuts on the second flange portion, and
The clamper against its elastic restoring force
The pump surface is almost parallel to the turntable surface.
Stop. Thus, suppressing an increase in height, etc. dimensions of the device in together when securing the disc insertion space and reduce vibration of the clamping mechanism. An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a main part of the present invention, and FIG. 2 is an external view of a recording disk mounting apparatus to which the present invention is applied. A front panel 2 is provided at the front of a case 1 and an eject button 3 is provided. A play button 4 and other operation buttons 5 and an operation display tube 6 are attached, and a disc insertion hole 7 having a substantially inclined surface is formed in the panel portion. The mechanism shown in FIGS. 1 and 3 to 14 is mounted in the case 1 described above. The structure of the mechanism will be described with reference to FIG. 1 and FIGS. Here, the parts having the same reference numerals are the same parts. A door 9 pivotally supported by a chassis 8
Are disposed close to each other so as to cover the disc insertion hole 7. Pin 11 of door link 10 pivotally supported by chassis 8
The door link pin 12 is slidably engaged with the right end of the door 9, and the door link pin 12 is fitted to the movable piece 14 of the plunger 13 mounted on the chassis 8 and is slidably attached to the chassis 8 in the front-rear direction. And is inserted into a clutch slider 16 urged forward by a spring 15. The door link 10 is urged by a close spring 17 in a direction in which the door 9 closes. Clutch slider 1
One end of the clutch link 3 is pivotally supported by the chassis 8.
0 of the clutch slider 16
, The clutch link 30 rotates.
On the other hand, the pin 29 at the other end of the clutch link 30 is
, Which is attached to the rear of a right slide arm 24 slidable in the front-rear direction, has a slot 25 and a slot 26, and is urged rearward by a spring 28.
7 is inserted into the depression 26. The drive gear 23 is
Power is transmitted from a motor gear 20 attached to a motor 19 fixed to the chassis 8 via a reduction gear 21 and a worm gear 22.
Are arranged so as to be able to mesh with and separate from the drive gear 23 by the rotation of. The rack stopper 32 is fixed to the chassis 8 so that the rack 27 engages with the drive gear 23 and regulates the rack 27 so that it does not escape downward when it starts moving forward. When the rack 27 has completely moved backward, the front end 33 of the rack 27 is lowered downward, and the drive gear 2
It is arranged at a position where it does not come into contact with the rack 27 when it is disengaged from 3. The front end 34 of the right slide arm 24
Is oblique, is pivotally supported by the chassis 8, is mounted to be rotatable in the vertical direction, and is disposed at a position where the door 9 is prevented from turning inward when turned downward. The right slide arm 24 moves forward and pushes up the stopper link 37 and lowers the door stopper 35 when the right slide arm 24 moves forward. Have been. Further, the stopper link 37 is constantly urged downward by the spring 38. The right slide arm 24 is provided with a vertically elongated hole 39, and a rotating plate 41 having a pin 40 fitted in the elongated hole 39 is connected to a rotating shaft 42 whose both ends are supported by the chassis 8 at both ends. A rotating plate 44 having a pin 43 is screwed to the left end. Further, a left slide arm 46 having an elongated hole 45 fitted to the pin 43 is attached to the chassis 8 so as to be slidable in the front-rear direction, and is disposed so as to slide in the same direction as the right slide arm 24. The left slide arm 46 is provided with an end 48 arranged to press the up switch 47 when the slide arm 46 has completely moved rearward, and an end 50 for pushing the chuck switch 49 when moving forward.
A pin 53 of a lifting lever 52 pivotally supported on the side surface of the chassis 8 is fitted into the L-shaped elongated hole 51. Similarly, the right slide arm 24 is fitted with a pin 55 of a lift lever 54 pivotally supported on the side surface of the chassis 8, and the lift lever 52
And 54 are provided with arc portions 56 and 57, respectively. A disc motor 61 having a turntable 59 for supporting and rotating the disc 58 and a taper ring 60 for positioning a disc mounted and slidably mounted on the turntable 59 in a vertical direction at the tip thereof.
, A read pickup unit 62, and the pickup unit 62
Are attached to a damper holder 63, 64, 65, 66 fixed to the chassis 8 with a feed mechanism (not shown because it is not directly related to the present invention) for moving the damper 67, 68, 66 in the front-rear direction. At 69 and 70, a unit plate 75 having pins 71, 72, 73 and 74 is attached so as to be isolated from the chassis 8 by vibration. Further, the intersections 76 of the lines connecting the centers of the dampers 67 and 69 and the lines connecting the centers of the dampers 67 and 69 are substantially located on the line connecting the center of the turntable 59 and the center of the reading pickup 62. , 69 and 70 are appropriately arranged, and are supported by shaft portions 77 and 78 at the rear of the unit plate 75 supported by the chassis 8 so that vibration of the chassis 8 is hardly transmitted to the unit plate 75. Magnet 7 arranged opposite table 59
And the arm 8 holding it.
1 and abuts against the inner surface 8 ′ of the chassis 8 when the arm 81
Mounts a clamper holder 82 composed of a leaf spring configured to push up the clamper 80,
Rollers 84, 86 for pressing the transfer rollers 83, which are supported on both ends of the chassis 8 at the time of transfer, are supported at the front part, and one ends of the links 85, 86 are supported at one end by the unit plate 75.
The engagement pins 91, 92 fixed to both side surfaces of the clamper arm 90, which supports the shaft portions 88, 89 of the disc holder 87, which are supported by the shaft, can contact the above-mentioned lifting levers 52, 54. 8 protruding from the holes 93, 94. The unit plate 75 is hung on the chassis 8 by a spring 95, and the vertical regulating pins 96, 97, 98 of the unit plate 75 are scissored on both sides when the clamper arm 90 is raised. When the slide arms 24 and 46 move forward, the lower surface 99 of the right slide arm 24 and the lower surface 10 of the left slide arm 46 respectively.
0,101. In addition, a holder 103 ′ is provided which supports a positioning lever 103 having a positioning pin 102 which is slightly separated from the outer diameter of the disk when the disk is moved up and down to prevent the disk from being displaced in the forward direction. ing. The positioning lever 103 is a push cam 1 supported by the chassis 8.
04, the cam surface 10 of the push cam 104.
Reference numeral 5 is fitted to a pin 46 of the left slide arm 46 to restrict rotation. The disk receiver 87 has two springs 1
06 is constantly urged toward the unit plate 75 side. A large pulley 111 mounted on an E-ring 110 is attached to a shaft 109 which is rotatably coupled to the shaft 107 by a long hole 108 so as to be rotatable within a certain angle range with respect to the convex portion 107 of the drive gear. A belt 113 is hung between the small pulleys 112 for rotating the rollers 83 by friction transmission. The transfer roller 83 and the pressure roller 84 are made of rubber or the like, and rotate between the core shafts 114 and 115 by friction so as to prevent scratches when the disk is fixed. Further, pins 116 and 117 are mounted on the unit plate 75 at positions that are concentric with the center of the turntable 59 and slightly larger than the outer diameter of the disk.
Further, the chassis 8 is also provided with an optoelectronic sensor 118 for detecting the presence or absence of light blocking immediately below at the same distance. Further, a sensor 119 for detecting when the disk is almost half inserted from the door 9 is provided, and the sensor 1 for detecting the position of the door link 10 at the end 120 of the door link.
21 are provided, and the sensor 118 and the UP switch 4 described above are provided.
7, together with the chuck switch 49, are connected to a signal determination circuit (not shown) composed of a microcomputer. The disk motor 61, the drive motor 19, the pickup 6
2, a plunger 13 is connected to a drive circuit (not shown), an eject button 3, a play button 4, and other buttons 5 are connected to a signal determination circuit, and a display tube is connected to a display circuit (not shown). (Not shown). Next, the operation will be described. Disk 58
When the player presses the door 9 with the disk in the state of FIG. 3, the door link end 120 turns on the sensor 121. Thereby, the plunger 13 is sucked by the control circuit, and the drive motor 19 starts rotating at the same time when the door 9 is opened,
The driving gear 23 and the large pulley 111 rotate counterclockwise, and the belt 113 and the small pulley 112 rotate the transfer roller 8.
3 is rotated in the disk retracting direction. At this time, the rack 27 is disengaged from the drive gear 23 by the plunger 13, the clutch slider 16, and the clutch link 30 (the state shown in FIG. 8). Subsequently, when the disk 58 is pulled in and the sensor 118 is no longer interrupted, the drive motor 19 is stopped and the plunger 13 is turned off. This allows the spring 1
The door 9 is closed by the force of 7. And the rack 27 is a spring 1
The force of 5 causes the clutch link 30 to rotate, rise, and mesh with the drive gear 23 (FIG. 9). Next, the drive motor 19 is rotated in reverse by the control circuit (all the above-described circuits), and the drive gear 23 is rotated.
Rotates clockwise. At this time, even if the driving gear 23 rotates in the reverse direction, the large pulley 111 does not rotate because the rotation angle range of the elongated hole 108 does not push the convex portion 107 and power is not transmitted. Therefore, the transfer roller 83 does not rotate. The rack 27 moves forward and moves to a position over the rack stopper 32. Thereafter, the elongated hole 25 pushes the right slide arm 24. Accordingly, the right slide arm 24 starts to move forward, and the rotating plate 41 also rotates, so that the left slide arm 46 also moves forward at the same time. Subsequently, the push cam 104 is raised and the positioning lever 103 is raised (the state of FIG. 9). As the lifting levers 52 and 54 rotate, the clamp arm 90 moves down, and the disc receiver 87 is
It descends by the force of 06. At the same time, since the pressure roller 84 is lowered, the disk 58 is lowered, and the disk 58 is lowered with the front-side positioning pins 102 and the side walls of the disk receiver 87 in the left-right direction and the pins 116 and 117 in the rear direction. It is put on 59. At this time, the front end 34 of the right slide arm pushes up the stopper link 37, lowers the door stopper 35, and locks the door 9 so as not to open. At the same time, the clamper 80 presses the disk 58, and the lower surface portions 9 of the left and right slide arms 24 and 46.
Since the units 9, 100 and 101 are separated from the pins 98, 97 and 96, the unit plate 75 is released and becomes free. Subsequently, since the end 50 of the left slide arm 46 presses the chuck switch 49 (FIG. 11), the drive motor 1
9 stops, the loading of the disc is completed, and then the control circuit activates the turntable 60 and the pickup 62 to start playing (the state of FIG. 11). Next, a case where the performance is stopped and the disk 58 is removed will be described. When the eject button 3 is pressed, the control circuit stops the turntable 60 and the drive motor 19
Rotates the drive gear 23 counterclockwise. The rack 27 starts moving backward, and the left and right slide arms 2
4, 46 begin to move backwards. Then, the lower surface 9
9, 100, 101 contact the pins 98, 97, 96,
The unit plate 75 is fixed so as not to move upward. Further, the lifting levers 52 and 54 are connected to the left and right slide arms 2.
When the clamp arm 9 rotates when it rotates with the movement of the
0 is pushed up, and the clamper 80 is separated from the disk 58. At the same time, the door stopper 35 is raised by the force of the spring 38. Subsequently, as the clamp arm 90 rises, the tip of the clamper holder 82 comes into contact with the chassis 8, the clamper 80 is lifted, the disc 58 is lifted from the turntable 60, and the pressure roller 84 transports the disc 58 by the spring 106. It is pressed against the roller (state of FIG. 13). Subsequently, the push cam 104 is pushed down by the left slide arm 46, and the positioning lever 103 is pressed.
Lower. Further, the rack 27 moves backward to a position away from the rack holder 32. The rear end 48 pushes 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. As a result, the door 9 opens, and the clutch slider 16 is disengaged from the springs 15 and 1.
7, the clutch link 30 is rotated, the rack 27 is rotated downward, and the drive gear 23 is disconnected. Subsequently, the drive motor 19 rotates in the reverse direction and the drive gear 2
3 rotates clockwise, and the large pulley 111 and the belt 11
3. The transfer roller 83 rotates in the direction of discharging the disk via the small pulley 112, and discharges the disk 58. When the disk 58 passes by the sensor 119, the drive motor 19 is stopped by the control circuit. At this time, the plunger 13 is turned off and the door is closed. In this embodiment, at this time, the plunger 13
It is obvious that it is easy to turn off the plunger 13 and to turn off the plunger 13 when the disk is separated from the sensor 118 to close the door. This prevents the door from hitting the disc during ejection. According to the present invention, the mechanism of the clamp section is simplified.
Easy and thin structure saves space in the entire device
In addition, a thin structure can be achieved. Also, a plate that supports the clamper
In order to make the spring fixed integrally with the movable arm,
In combination with the damping means, the vibration of the leaf spring is reduced even when disturbance is applied.
Noise can be reduced.
To prevent damage to parts and extend the life of the equipment.
You .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a main part of the present invention. FIG. 2 is an external view of the apparatus according to the embodiment of the present invention in which an apparatus mechanism is housed. FIG. 3 is a perspective view of an internal mechanism of FIG. 2; FIG. 4 is a left side perspective view of FIG. 3; FIG. 5 is a plan view of FIG. 3; FIG. 6 is a view taken along the line AA of FIG. 5; FIG. 7 is a left side view of FIG. 3; FIG. 8 is a right side view at the time of operation of FIG. 3; FIG. 9 is a right side view at the time of operation of FIG. 3; FIG. 10 is a left side view at the time of operation in FIG. 3; FIG. 11 is a left side view during the operation of FIG. 3; FIG. 12 is a view taken along line BB of FIG. 3; 13 is a diagram illustrating the operation of FIG. FIG. 14 is an exploded perspective view of the vibration insulating unit of FIG. [Description of Signs] 8 ... Chassis, 80 ... Clamper, 81 ... Arm, 82 ... Clamper holder, 90 ... Clamper arm.

Claims (1)

(57) [Claims] Clamp the disc on the turntable of the rotary drive
And a first base portion provided with the rotation drive portion
And the vibration damping hand in the clamped state of the disc
A second base supporting the first base via a step;
In a disk device provided with a predetermined distance in the rotation axis direction at the outer periphery of the structure
Clamper having first and second flange portions formed thereon
And the clamper is supported in an unclamped state by an elastic restoring force.
A leaf spring, one end of which is substantially line-symmetric
A first pair of arms protruding planarly on the side and planar on the outside
A leaf spring having a second pair of arm portions projecting from the plate spring;
And the second paired arm fixed to the second paired arm of
In both cases, the outer periphery of the clamper is connected to the first and second francs.
Having a configuration surrounding the first base portion and the first base portion.
For the movement of the lock member that locks to the second base,
A movable arm portion that is displaced in conjunction with
In the unclamped state, the leaf spring is
The side is supported by the second base, and the first
The paired arms contact the first flange and the clamp
The movable arm section supports the second frame.
The leaf spring contacts the surface of the flange portion on the side of the first flange portion.
Against the elastic restoring force of the disk clamp
Lock the lock surface so that it is almost parallel to the turntable surface
Disk and wherein the configuration as to the clamper support means has a configuration including a.