JP2574758B2 - Disk unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for mounting a recording disk such as a compact disk, a video disk, etc., and is suitable for being securely mounted on a turntable even under vibration conditions such as in a vehicle. The present invention relates to a recording disk mounting device.

[Conventional technology]

A mounting device that mounts and reproduces a disk on a turntable under vibration conditions, such as this type of vehicle-mounted type, automatically mounts the disk as described in the document Nikkei Mechanical (1985-4-8). A way to do that has been proposed.

[Problems to be solved by the invention]

However, in the conventional method, no consideration has been given to space saving in the clamper portion and reduction of unnecessary noise when the clamper is raised.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording disk mounting apparatus which can eliminate the drawbacks of the prior art and save space.

[Means for solving the problem]

According to the present invention, a clamper (one embodiment reference numeral 80) for clamping a disk (one embodiment reference numeral 58) to a turntable (one embodiment reference numeral 59) of a rotary drive unit (one embodiment reference numeral 59, 60) is provided. The first base portion (75 in one embodiment) provided with a driving portion and the first base member via a vibration damping buffer (67, 68, 69, 70, 95 in one embodiment) in a disk clamped state. A second base portion (one embodiment code 8) for supporting the base portion, wherein the engaging portion corresponds to the non-engaged state or the engaged state corresponding to the clamped state or the unclamped state. Then, the first base portion is unlocked or locked with respect to the second base portion by lock means (one of reference numerals 96, 9).
7,98,100,101) and a leaf spring (82 in one embodiment) for supporting the clamper in the non-clamped state by elastic restoring force, and having one end side substantially in line symmetry and a flat inside and outside. A leaf spring having a configuration in which a first pair of arm portions protruding and supporting the clamper and a second pair of arm portions are formed, and coupled to the second pair of arm portions of the leaf spring. In the non-clamped state, the leaf spring has an end opposite to the first and second paired arms in the non-clamped state. The arm portion is supported by a second base portion (8, 8 'in one embodiment), and the clamper, together with the leaf spring, is provided at a position away from the rotary drive portion (59, 60 in one embodiment). And a clamper supporting means (82, 90 in one embodiment) configured to support in the unclamped state.

[Action]

 Suppresses unnecessary noise when the clamp mechanism rises.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a view 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, wherein a front panel 2 is provided at the front of a case 1 and an eject button is provided.
3, a play button 4, other operation buttons 5, an operation display tube 6, and the like are mounted, 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 is shown in FIGS. 1 and 3 to 14.
This will be described with reference to the drawings. Here, the parts having the same reference numerals are the same parts.

A door 9 rotatably supported by the chassis 8 is disposed close to the disk insertion hole 7. The pin 11 of the door link 10 pivotally supported by the chassis 8 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, Further, it is slidably mounted in the front-rear direction of the chassis 8 and is inserted into a clutch slider 16 urged forward by a spring 15. The door link 10 is urged by a closing spring 17 in a 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 pivotally supported by the chassis 8.
30 rotates. On the other hand, a pin 29 at the other end of the clutch link 30 is attached to the chassis 8 and attached to the rear of the right slide arm 24 which can slide in the front-rear direction.
Rack having a 26 and biased rearward by a spring 28
27 is inserted into the depression 26. The drive gear 23 is a motor gear attached to a motor 19 fixed to the chassis 8.
Power is transmitted from the gear 20 through a reduction gear 21 and a worm gear 22, and the rack 27 is arranged so as to mesh with and separate from the drive gear 23 by the rotation of the clutch link 30.

The rack stopper 32 is fixed to the chassis 8, and when the rack 27 meshes with the drive gear 23 and starts moving forward,
When the right slide arm 24 has completely moved rearward at a position where the right slide arm 24 has
Is lowered so as to be out of mesh with the drive gear 23, and is arranged at a position where it does not come into contact with the rack 27.

The front end 34 of the right slide arm 24 is oblique, is pivotally supported by the chassis 8 and is mounted so as to be rotatable in the vertical direction, so that the door 9 can be turned inward when turned downward. The right end bent portion 36 of the door stopper 35 arranged at the position to be blocked is fitted to the lower end of the stopper link 37 pivotally supported by the chassis 8, and the stopper link 37 is moved when the right slide arm 24 moves forward. Push up, door stopper
It is arranged to lower 35. Further, the stopper link 37 is constantly urged downward by the spring 38. The right slide arm 24 is provided with a vertically long hole 39, and a rotating plate 41 with a pin 40 fitted in the long hole 39 is mounted on the chassis 8
Is connected to a rotating shaft 42 whose both ends are pivotally supported.
A turning plate 44 having 43 is screwed.

Further, a left slide arm 46 having a long 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. Has moved all the way back,
An end 48 arranged to press the up switch 47 and an end 50 pushing the chuck switch 49 when moved forward are provided on the left slide arm 46, and the L-shaped elongated hole 51 has a chassis 8.
A pin 53 of an ascending lever 52 pivotally supported on the side surface is fitted. 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 is provided with arc portions 56 and 57 formed on the lift levers 52 and 54, respectively. Further, a turntable 59 for supporting and rotating the disk 58, a disk motor 61 having a tapered ring 60 mounted on the turntable 59 slidably in the vertical direction for positioning the disk at its tip, and a reading motor 61. A pickup unit 62 and a feed mechanism unit (not shown because it is not directly related to the present invention) for moving the pickup unit 62 in the front-rear direction are mounted thereon, and are fitted to damper holders 63, 64, 65, and 66 fixed to the chassis 8. Bonded dampers 67,68,69,
Pins 71,72,73,7 so that they are vibration-isolated from chassis 8 at 70
A unit plate 75 having 4 is mounted.

Further, the damper 6 is arranged such that the intersection 76 of the line connecting the centers of the dampers 67 and 69 and the line connecting the centers of 68 and 70 is almost on the line connecting the center of the turntable 59 and the center of the reading pickup 62.
7,68,69,70 are properly arranged, and the shafts 77 and 78 are provided at the rear of the unit plate 75 supported by the chassis 8 so that the vibration of the chassis 8 is hardly transmitted to the unit plate 75. And a clamper 80 equipped with a magnet 79 facing the turntable 59 and an arm 81 holding the clamper 80.
When abutting against the inner surface 8 ′ of the chassis 8, a clamper holder 82 composed of a leaf spring configured so that the arm portion 81 pushes up the clamper 80 is attached. A pressure roller 84 that presses against the transport roller 83 is supported at the front part, and one end of the shaft part 88, 89 of the disk back 87 that is supported at one end by links 85, 86 that are supported by the unit plate 75. Clamper arm 9 supported by a shaft
Engagement pins 91, 92 fixed to both side surfaces of the chassis 0 are provided to protrude from the holes 93, 94 of the chassis 8 so as to be able to abut against the above-described lifting levers 52, 54.

The unit plate 75 is suspended from the chassis 8 by a spring 95, and the vertical regulating pins 96, 97, 98 of the unit plate 75 are fitted on both sides when the clamper arm 90 is raised, and the left and right slide arms 24, When the 46 moves forward, the lower surface 99 of the right slide arm 24 and the left slide arm respectively
The lower surfaces 100 and 101 of the 46 are in contact with each other. Further, a holder 103 ′ is mounted which pivotally 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 located below the push cam 104 pivotally supported by the chassis 8, and the cam surface 105 of the push cam 104 is fitted to the pin of the left slide arm 46 to restrict rotation. The disk receiver 87 is constantly urged toward the unit plate 75 by two springs 106. Also, the convex portion 107 of the drive gear
A large pulley 111 attached to a shaft 109 by an E-ring 110 and a transfer roller 83 are rotated by friction transmission so as to be rotatable within a certain angle range. A belt 113 is hung between the small pulleys 112. The transfer roller 83 and the pressure roller 84 are made of rubber or the like, and the rotation between the core shafts 114 and 115 is transmitted by friction to prevent scratches when the disk is fixed.

Pins 116 and 117 are mounted on the unit plate 75 at a position that is concentric with the center of the turntable 59 and slightly larger than the outer diameter of the disk, and further detects the presence or absence of light blocking directly below the chassis 8 at the same distance. An optoelectronic sensor 118 is provided. Further, a sensor 119 for detecting when the disk is almost half inserted from the door 9 is provided, and a sensor 121 for detecting the position of the door link 10 is also provided at the end 120 of the door link, and the sensors 118, U
Along with the P switch 47 and the chuck switch 49, it is connected to a signal determination circuit (not shown) composed of a microcomputer. Disk motor 61, drive motor 19, pickup
62, the plunger 13 is connected to a drive circuit (not shown),
The eject button 3, the play button 4, and the other button 5 are connected to a signal determination circuit, and the display tube is connected to a display circuit (not shown), and all of them are controlled by a microcomputer (not shown).

Next, the operation will be described. When playing the disk 58, pressing the door 9 with the disk in the state of FIG. 3 causes the Doralink end 120 to turn on the sensor 121. As a result, the plunger 13 is sucked by the control circuit, and at the same time when the door 9 is opened, the drive motor 19 starts rotating, and the drive gear 23 and the large pulley 111
Is rotated counterclockwise, and the belt 113 and the small pulley 112 rotate the transfer roller 83 in the disk pull-in 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 in FIG. 8). Subsequently, when the disk 58 is retracted and the sensor 118 is no longer interrupted, the drive motor 19 stops,
The plunger 13 is turned off. Thus, the door 9 is closed by the force of the spring 17. In addition, the clutch link 30 is rotated and raised by the force of the spring 15 and the rack 27 meshes with the drive gear 23 (the state shown in FIG. 9). Next, the control circuit (all the circuits described above) causes the drive motor 19 to rotate in the reverse direction and the drive gear 23 to rotate clockwise. At this time, even if the drive 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, so that power is not transmitted and the large pulley does not rotate. Therefore, the transfer roller 83 does not rotate. The rack 27 moves forward and moves to a position over the rack stopper 32. Then, the long hole 25 pushes the right slide arm 24. This allows 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 push cam 104 is raised and the positioning lever 103 is raised (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, since the pressure roller 84 descends, the disk 58
Is lowered while being positioned substantially by the side walls of the disk receiver 87 in the front direction positioning pins 102 and the left and right directions and by the pins 116 and 117 in the rear direction.
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
Hold down 58, and the lower surfaces 99, 10 of the left and right slide arms 24, 46.
Since the pins 0, 101 are separated from the pins 98, 97, 96, the unit plate 75 is released and becomes free. Subsequently, the end 50 of the left slide arm 46 presses the chuck switch 49 (the eleventh
Therefore, the drive motor 19 is stopped, and the loading of the disc is completed. Then, the control circuit turns on the turntable 60 and the pickup 62 to start the performance (the state shown in FIG. 11).

Next, a case where the performance is stopped and the disk 58 is taken out will be described. When the eject button 3 is pressed, the control circuit stops the turntable 60, the drive motor 19 rotates, and the drive gear 23 rotates counterclockwise. The rack 27 starts moving backward, and the left and right slide arms 24 and 46 start moving backward. Subsequently, the lower surfaces 99, 100, and 101 come into contact with the pins 98, 97, and 96, and the unit plate 75 is fixed so as not to move upward.
In addition, the lifting levers 52 and 54
When the rotation is caused by the movement of the clamp arm 90, the clamp arm 90 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 moves up, the tip of the clamper holder 82 comes into contact with the chassis 8 so that the disc receiver 87 contacts the chassis 8.
The disc 58 is lifted from the turntable 60, and the pressure roller 84 presses the disc 58 against the transfer roller by the spring 106 (the state shown in FIG. 13).

Subsequently, the push cam 104 is pushed down by the left slide arm 46, and the positioning lever 103 is lowered. Further, the rack 27 moves backward to a position away from the rack holder 32. This rear end 48 presses the up switch 47. The control circuit stops the drive motor 19 and at the same time the plunger 13
Turns on. This opens the door 9 and the clutch slider
16 moves rearward against the springs 15 and 17, rotates the clutch link 30, rotates the rack 27 downward, and
I cut it apart. Subsequently, the drive motor 19 rotates in the reverse direction, the drive gear 23 rotates clockwise, and the transfer roller 83 rotates in the disk discharge direction via the large pulley 111, the belt 113, and 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
It turns off and the door closes.

In this embodiment, the plunger 13 is turned off at this time.However, the plunger 13 is kept on and the plunger 13 is turned off when the disk is separated from the sensor 118, and the door is closed. Is easy, so that the door does not hit the disc during ejection.

〔The invention's effect〕

According to the present invention, not only space saving of the clamp mechanism can be achieved, but also unnecessary noise after the clamp mechanism is raised can be suppressed, so that it is possible to operate quietly in a smaller space.

[Brief description of the drawings]

FIG. 1 is a view showing a main part of the present invention, FIG. 2 is an external view of a housing of the device mechanism of one embodiment of the present invention, FIG. 3 is a perspective view of an internal mechanism of FIG. 2, and FIG. 3 is a left side perspective view, FIG. 5 is a plan view of FIG. 3, FIG. 6 is a view taken along line AA of FIG. 5,
7 is a left side view of FIG. 3, FIG. 8 is a right side view of FIG. 3 in operation, FIG. 9 is a right side view of FIG. 3 in operation, and FIG. FIG. 11 is a left side view at the time of operation, FIG. 11 is a left side view at the time of operation of FIG. 3, FIG. 12 is a view taken along line BB of FIG. 3, and FIG. 13 is a view at the time of operation of FIG. is there. FIG. 14 is an exploded perspective view of the vibration insulating section of FIG. FIG. 15 is an exploded perspective view of the components shown in FIG. 3, FIG. 8, and FIG. FIG.
Lift lever in the configuration of FIGS. 10, 11, and 14.
FIG. 5 is an exploded perspective view showing an operation of a lever 52 and a driving mechanism of a lever 103 having a positioning pin 102. 8 ... chassis, 80 ... clamper, 81 ... arm, 82 ... clamper holder, 90 ... clamper arm.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Mitsuo Satake, 9 Noguchi-mae, Shiratori-cho, Toyokawa 5 Inside the Toyokawa Plant of Hitachi, Ltd. 62-7661 (JP, U)

Claims (1)

(57) [Claims] 1. A clamper for clamping a disk to a turntable of a rotary drive unit, and a first clamp having the rotary drive unit.
And a second base portion for supporting the first base portion via a vibration damping buffer means in a clamped state of the disk, the disk device corresponding to the clamped state or the non-clamped state. Locking means for bringing the first base portion into an unlocked state or a locked state with respect to the second base portion by setting the engaging portion to a non-engaged state or an engaged state; and an elastic restoring force for the clamper. A first pair of arm portions projecting from one end of the leaf spring in a substantially line-symmetrical manner inwardly and outwardly in a planar manner to support the clamper; And a pair of arm portions coupled to the second pair of arm portions of the leaf spring. In the unclamped state, The first and second leaf springs An end opposite to the arm-shaped portion is supported by the second base portion, and the arm portion, together with the leaf spring, supports the clamper in the unclamped state at a position away from the rotary drive portion. And a clamper supporting means.