JPH0650583B2 - Disk mounting device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a disc mounting apparatus such as a compact disc and a video disc, and is suitable for sure mounting on a turntable even under vibration conditions such as vehicle mounting. Regarding the device.

[Background of the Invention]

Conventionally, this type of mounting device that mounts and reproduces a disc on a turntable under vibration conditions such as in-vehicle use, as described in the document "Nikkei Mechanical" (No. 4-8, 1985), automatically drives the disc. The method of attaching it actively has been proposed. However, in the conventional method, no consideration has been given to the necessity of applying force when protecting the disk or inserting the disk when the apparatus is largely tilted or erroneously operated.

[Object of the Invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art and to provide a disc loading device that can be loaded and played back reliably under vibration conditions.

[Outline of Invention]

The present invention relates to a disk mounting apparatus including a horizontal transfer mechanism that horizontally transfers a disk by roller drive, and an elevating mechanism that elevates and mounts the disk to a rotating mechanism section. One of them is provided, and the positioning member on the disc insertion side is retracted to a position that does not hinder the horizontal transport of the disc during horizontal transport of the disc, and moved to a position that regulates horizontal displacement of the disc during vertical movement of the disc and when mounted on the rotating mechanism. By doing so, the horizontal displacement of the disc is regulated and the displacement of the disc is prevented.

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an external view of a recording disk mounting device to which the present invention is applied, in which a front panel 2 is provided in a front part of a case 1, an eject button 3, a play button 4, other operation buttons 5 and an operation display tube 6 are provided. Etc. are attached, and a disc insertion hole 7 having a substantially inclined surface is formed in the panel portion. The mechanism shown in FIGS. 2 to 12 is installed in the case 1 described above. The structure of the mechanism is shown in FIGS.
This will be explained with reference to FIG. Here, objects having the same reference numerals are the same parts.

A door 9 rotatably supported by the chassis 8 is closely arranged so as to close the disc insertion hole 7. Chassis 8
The pin 11 portion of the door linkage 10 pivotally supported by is slidably engaged with the right end of the door 9, and the door link pin 12 is attached to the chassis 8
A clutch slider 16 fitted to a movable piece 14 of a plunger 13 mounted on the chassis 13 and slidably mounted in the front-rear direction of the chassis 8 and biased forward by a spring 15.
Has been inserted into. Further, the door link 10 is biased by a close 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, and the clutch link 30 is rotated by sliding the clutch slider 16 back and forth. On the other hand, the pin 29 at the other end of the clutch link 30 is the chassis 8
Right slide arm that is attached to the
It is attached to the rear part of 24 and has an elongated hole 25 and an elongated recess 26,
It is inserted into the recess 26 of the rack 27 biased rearward by the spring 28. The drive gear 23 receives power 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, and the rack 27 meshes with the drive gear 23 by rotation of a clutch link 30. It is arranged as possible.

The rack stopper 32 is fixed to the chassis 8 and
27 engages with the drive gear 23, and when the front end 33 of the rack 27 moves at the position where the rack 27 is restricted so as not to escape downward when the front start of the movement and the right slide arm 24 has completely moved backward. It is arranged at a position where it does not come into contact with the rack 27 when it is lowered downward and disengaged from the drive gear 23.

Further, the front end portion 34 of the right slide arm 24 is slanted, is pivotally supported by the chassis 8 and is rotatably attached in the vertical direction, and prevents the door 9 from rotating inward when the door 9 is rotated downward. Stopper link which is fitted to the right end bent portion 36 of the door stopper 35 arranged at the position to be pivotally supported by the chassis 8.
When the right slide arm 24 moves forward, the stopper link 37 is pushed up and the door stopper 35 is lowered. Further, the stopper link 37 is always urged downward by the spring 38. The right slide arm 24 is also provided with an elongated hole 39 in the vertical direction.
A rotating plate 41 having a pin 40 fitted to 39 is connected to a rotating shaft 42 whose both ends are supported by the chassis 8, and a pin 43 is provided at the left end.
A rotary plate 44 having a screw is fixed by screws.

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,
The end portion 48 is arranged so as to slide in the same direction as the right slide arm 24, and is arranged so as to push the up switch 47 when the left slide arm 46 has moved to the rear, and the chuck switch 49 when moving to the front. A left slide arm 46 is provided with an end portion 50 for pushing, and a pin 53 of an ascending lever 52 pivotally supported on the side surface of the chassis 8 is fitted into an L-shaped elongated hole 51. Similarly, the right slide arm 24 is also fitted with a pin 55 of a lift lever 54 pivotally supported on the side surface of the chassis 8 and 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 disc 58, a disc motor 61 having a taper ring 60 for positioning the disc slidably mounted on the turntable 59 in the vertical direction at the tip thereof, and a reading motor. The damper holder 63, 64, 65, 66 fixed to the chassis 8 is equipped with a big-up portion 62 and a feed mechanism portion (not shown because it is not directly related to the present invention) for moving the pickup portion 62 in the front-back direction. Dampers 67 and 68 that are mated and bonded,
Pins 71, 7 so that they are vibration-isolated from the chassis 8 by 69, 70
A unit plate 75 having 2, 73, 74 is attached.

Further, the damper 6 is set so that the intersection 76 of the line connecting the centers of the dampers 67 and 69 and the line connecting the centers of the 68 and 70 is almost located on the line connecting the centers of the turntable 59 and the reading pickup 62.
Shafts 77 and 78 are provided at the rear of the unit plate 75 supported by the chassis 8 so that the vibrations of the chassis 8 are hard to be transmitted to the unit plate 75 by properly disposing 7, 68, 69 and 70.
Clamper 80, which is pivotally supported by and has magnet 79 mounted opposite to turntable 59, and arm portion 81 for holding it, contacts arm portion 81 when it contacts inner surface 8'of chassis 8.
Mounts a clamper holder 82 composed of a leaf spring configured to push up the clamper 80, and further, a crimping roller 84 for crimping a disk 58 to a transfer roller 83 axially supported at both ends of the chassis 8 at the time of transfer is pivotally supported at the front. An engagement fixed to both side surfaces of a clamper arm 90, which has shaft portions 88 and 89 of a disk rake 87 pivotally supported at one end by links 85 and 86 pivotally supported at a unit plate 75. The pins 91 and 92 are provided so as to project from the hole portions 93 and 94 of the chassis 8 so as to be able to come into contact with the lift levers 52 and 54 described above.

Further, 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 fitted on both side surfaces 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 24 respectively.
The lower surface portions 100 and 101 of the 46 are in contact with each other. Further, when a disc is lifted and lowered, a positioning lever 103 having a positioning pin 102 arranged so as to be slightly separated from the outer diameter of the disc to prevent the disc from being displaced in the front direction is mounted on a holder 103 'which is pivotally supported up and down. is doing. Further, the positioning lever 103 is a push cam 104 pivotally supported by the chassis 8.
The push cam 104, which is placed on the lower side and is urged upward by the torsion spring 105 so as to be constantly in contact with the push cam 104, and the cam surface 122 is connected to the pin of the left slide arm 46 and whose rotation is restricted. It is designed to work together.

Further, the rotation range of the positioning lever 103 is such that, when the push cam 104 is in the raised position, the tip of the positioning pin 102 protrudes above the outer diameter of the pressure roller 84 (that is, above the surface on which the disk 58 moves horizontally). When the push cam 104 is in the lowered position, the tip of the positioning pin 102 is below the outer diameter of the pressure roller 84 (below the plane where the disc 58 moves horizontally).
It is designed to go down to the position. The disc receiver 87 is constantly urged toward the unit plate 75 by the two springs 106. Further, there is a long hole 178 so as to be rotatable in a certain angle range with respect to the convex portion 107 of the drive gear, and a large pulley 111 attached by an E ring 110 to a shaft 109 and a transfer roller so as to be rotationally coupled thereto. A belt 113 is hung between small pulleys 112 that rotate 83 by friction transmission.
Further, the transfer roller 83 and the pressure-bonding roller 84 are made of rubber or the like so that friction is transmitted between the core shafts 114 and 115 to prevent scratches when the disc is fixed.

Further, pins 116 and 117 are mounted on the unit plate 75 at positions concentrically with respect to the center of the turntable 59 and slightly larger than the disk outer diameter, and the chassis 8 is also checked for the presence or absence of light underneath at a similar distance. An optoelectronic sensor 118 for detection is provided. Further, a sensor 119 for detecting when the disc 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 described above.
Together with the UP switch 47 and the chuck switch 49, they are connected to a signal determination circuit (not shown) composed of a microcomputer. Further, the disc motor 61, the drive motor 19, the pickup 62, and the plunger 13 are connected to a drive circuit (not shown), the eject button 3, the play button 4, and the other buttons 5 are signal judgment circuits, and the display tube is a display circuit (not shown). Connected), both of which are microcomputers (not shown)
The operation is controlled by.

Next, the operation will be described. When playing the disc 58, the door link end 120 turns on the sensor 121 when the door 9 is pushed by the disc in the state shown in FIG. As a result, the plunger 13 is attracted by the control circuit, the drive motor 19 starts to rotate at the same time when the door 9 is opened, and the drive gear 23 and the large pulley 11
1 rotates counterclockwise, and the belt 113 and the small pulley 112 rotate the transfer roller 83 in the disc 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 (state in FIG. 6). Then, the disk 58 is pulled in, and when the disk 58 is pulled right above the turntable 59, the sensor 118 detects the pull-in and the signal judgment circuit drives the drive motor 1
9 stops and the movement of the disk 58 stops. At this time,
The disk 58 abuts on the pins 116 and 117, so it does not go too far. Then, the plunger 13 is turned off. As a result, the door 9 is closed by the force of the spring 17. Moreover, the clutch link 30 of the rack 27 is rotated and lifted by the force of the spring 15 and meshes with the drive gear 23 (state of FIG. 7). Next, the control circuit (all the above-mentioned circuits) causes the drive motor 19 to rotate in the reverse direction and the drive gear 23 to rotate in the clockwise direction. At this time, the large pulley 111 does not rotate even if the drive gear 23 rotates in the reverse direction, 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 where it goes over the rack stopper 32. After that, the slot 25 pushes the right slide arm 24. As a result, 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 simultaneously. Subsequently, the push cam 104, which had been lowered by the left slide arm 46, rises via the cam surface 122 (state of FIG. 9), and the tip of the positioning pin 102 of the positioning lever 103 projects above the outer diameter of the pressure roller 84. The position of the disk 58 is regulated by the positioning pin 102 so as not to shift in the front direction.

Since the raising levers 52 and 54 rotate, the clamp arm 90 descends, and the disc receiver 87 also descends due to the force of the spring 106. At the same time, since the pressure roller 84 descends, the disc 58
Is lowered by the positioning pin 102 on the front side, the side wall of the disc receiver 87 in the left-right direction, and the pins 116, 117 in the rear direction so that the disc 58 can be mounted on the taper ring 60 of the turntable 59 when lowered. And, disk 58
A slight gap is provided so that the can be smoothly lowered, and the robot is lowered in a positioned state and placed on the turntable 59. At this time, the front end portion 34 of the right slide arm pushes up the stopper link 37, lowers the door stopper 35, and locks the door 9 so that it cannot be opened. At the same time, the clamper 80 presses the disk 58, and the lower surface 9 of the left and right slide arms 24, 46 is
Since the units 9, 100, 101 are separated from the pins 98, 97, 96, the unit plate 75 is unlocked and becomes free. Then, the end 50 of the left slide arm 46 pushes the chuck switch 49 (Fig. 9), so that the drive motor 19 is stopped and the disk mounting is completed, and then the control circuit causes the turntable 60,
The pickup 62 becomes active and starts playing (first
0 state).

Next, the time when the playing is stopped and the disc 58 is taken out will be described. When the eject button 3 is pushed, the turntable 60 is stopped by the control circuit and the drive motor 19 is rotated to drive the drive gear.
Rotate 23 counterclockwise. The rack 27 starts moving backward, and the left and right slide arms 24, 46 start moving backward. Subsequently, the lower surfaces 99, 100, 101 contact the pins 98, 97, 96, and the unit plate 75 is fixed so as not to move upward. Furthermore, the raising levers 52 and 54 are attached to the left and right slide arms 2
When the clamp arm 90 is rotated along with the movement of 4, 46, 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 lifted by the force of the spring 38.
The disk receiver 87 continues to rise, the tip of the clamper holder 82 contacts the chassis 8 as the clamp arm 90 rises,
The clamper 80 is lifted, the disk 58 is lifted from the turntable 60, and the pressure roller 84 presses the disk 58 against the transfer roller by the spring 106 (state shown in FIG. 11).

Then, the push cam 104 is moved by the left slide arm 46 and the tip of the positioning pin 102 is located below the outer diameter of the pressure roller 84 via the cam surface 122, and the disc 58 is positioned by the positioning lever until it becomes movable in the front direction. Press down 103. Further, it moves backward to a position away from the rack holder 32. The rear end portion 48 pushes the up switch 47. The drive circuit 19 is stopped by the control circuit, and the plunger 13 is simultaneously turned on. This opens the door 9, moves the clutch slider 16 rearward against the springs 15 and 17, rotates the clutch link 30, and rotates the rack 27 downward to drive the drive gear 23.
Cut more. Subsequently, the drive motor 19 reversely rotates, the drive gear 23 rotates clockwise, and the large pulley 111, the belt 113,
The transfer roller 83 rotates in the disc ejecting direction via the small pulley 112 to eject the disc 58.

When the disk 58 passes the sensor 119, the control circuit stops the drive motor 19. At this time, turn the plunger 13
It is FF and the door is supposed to close.

Further, in this embodiment, the plunger 13 is turned off at this time, but the plunger 13 is kept on,
When the disk is separated from the sensor 118, the plunger 13 is turned on.
Obviously, it is easy to configure the FF so that the door is closed, and this makes it possible to prevent the door from hitting the disc during ejection.

〔The invention's effect〕

According to the present invention, by preventing the disc from moving in the front direction by the positioning pin before releasing the holding when the disc is lowered, the disc is lowered while releasing the holding of the disc. Since it can be surely mounted on the turntable even under the vibration condition or when the device is tilted and placed, there is an effect that a malfunction can be eliminated, and a similar effect can be obtained when rising. Further, even when the transfer roller is used for raising and lowering, the disk can be positioned with a simple structure, so that the economical effect is great.

[Brief description of drawings]

FIG. 1 is an external view of the apparatus mechanism of one embodiment of the present invention, FIG. 2 is a perspective view of the internal mechanism of FIG. 1, FIG. 3 is a left side perspective view of FIG. 2, and FIG. 2 is a plan view, FIG. 5 is a view taken along the line AA of FIG. 4, FIG. 6 is a right side view of FIG. 2 in operation, and FIG. 7 is a right side of FIG. 2 in operation. Fig. 8 is a left side view of Fig. 2 during operation, Fig. 9 is a left side view of Fig. 2 during operation, and Fig. 10 is a view taken along the line BB in Fig. 2, 11 The figure is the first
FIG. 10 is an operation arrow view of FIG. 10, and FIG. 12 is an exploded perspective view. 46 …… Left slide arm, 58 …… Disc, 103 …… Positioning lever, 104 …… Push cam.

Claims (1)

[Claims] 1. A disk mounting apparatus comprising a horizontal transfer mechanism for horizontally transferring a disk, a disk rotating mechanism section for mounting and rotating the disk, and a disk lifting mechanism for vertically mounting the disk on the rotating mechanism section. A plurality of positioning members are provided in the disc rotation mechanism section, and among them, the positioning member on the disc insertion side is movable up and down, and during the horizontal transfer of the disc, the positioning member on the disc insertion side is horizontally transferred to the disc. Lower than the surface, and while the disc is moving up and down and attached to the disc rotation mechanism,
A disc mounting apparatus characterized in that the disc insertion side positioning member is moved upward to regulate horizontal displacement of the disc, and the disc insertion side positioning member and the disc elevating mechanism are interlocked. .