JPS6299950A - Loader for recording disc - Google Patents

Abstract

PURPOSE:To prevent malfunction under the vibrating condition by ensuring meshing a rack and a pinion while sliding a little the rack in the moving direction when they are meshed with each other. CONSTITUTION:One end of a clutch slider 16 is inserted to a pin 31 of a clutch link 30 supported to a chassis 9 and the clutch link 30 is driven by the forward/ backward sliding of the clutch slider 16. On the other hand, a pin 29 of the other end of the clutch link 30 is fitted to the chassis 8 and loaded to the rear part of the slidable right slide arm 24 in forward/backward direction. Then a long hole 25 and a long hole shaped ditch 26 are privided, the pin 29 is inserted to the ditch 26 of the rack 27 energized backward by a spring 28, and the rack 27 is arranged so as to be meshed and separated with/from the drive gear 23 by the turning of the clutch link 20. Further, a rack stopper 32 is fixed to the chassis 8, the rack 27 meshes with the drive gear 23 so as to be regulated so that the rack 2 is not escaped downward when it is moved forward.

Description

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

[Conventional technology]

In order to transport the disk and move it up and down using one loading motor, a rack and pinion transmission switching mechanism was required.

Conventionally, this type of mounting device for mounting a disc on a turntable and playing it under vibration conditions, such as in a car, automatically mounts the disc as described in the document Nikkei Mechanical (April 8, 1985). A method has been proposed.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording disc mounting device that eliminates the drawbacks of the prior art and that can be mounted and reproduced reliably under vibration conditions.

[Means to solve the problem]

The present invention is achieved in a recording disk mounting device in which a drive unit is constructed using a rack and pinion that can transmit and disconnect power, by slightly sliding the rack in the direction of movement when the rack and pinion are engaged. Ru.

[Effect]

Prevent malfunction under vibration conditions by ensuring secure engagement.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 14. FIG. 1 shows the main parts of the present invention, and FIG. 2 shows the external appearance of a recording disc mounting device 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. 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 is shown in Figures 1 and 3~
This will be explained with reference to FIG. 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 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 engaged with 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 connected to a pin 31 of a clutch link 30 that is pivotally supported by the shaft 8.
The clutch link 30 rotates as the clutch slider 16 slides back and forth. On the other hand, the pin 29 at the other end of the clutch link 30 is attached to the chassis 8, is attached to the rear part of the right slide arm 24 which can be slid in the front and rear direction, has an elongated hole 5 and an elongated recess 26, and has a spring path. The recess 26 of the rearwardly biased rack 27
is inserted into. The drive gear n 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 via the worm gear 22,
The rack 27 is arranged so that it can be engaged with and separated from the drive gear by rotation of the crack link 30.

Moreover, the rack stopper 32 is fixed to the chassis 8, and when the rack 27 engages with the drive gear n and starts moving forward, the rack 27
7 and when the right slide arm 24 has moved fully backward, the front end of the rack 27 falls downward and is disengaged from the drive gear 23, when the rack 27 It is placed in a position where it does not come in contact with the

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 end bent portion 36 of the door stopper 35 placed in the blocking position, contacts the lower surface of the stopper link 37 that is pivotally supported by the chassis 8, and prevents the right sliding end of the door stopper 35 from closing.
When the door 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.

Further, the right slide arm 24 is provided with a vertical elongated hole 39, and a rotating plate 41 equipped with a pin 4o 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 pin plate is screwed to the left side 4.

Further, a left slide arm 46 having an elongated hole 45 that fits into the pin 43 is attached to the chassis 8 so as to be slidable in the front and rear direction, and is arranged to slide in the same direction as the right slide arm 24. An L-shaped elongated hole 51 is provided in the left slide arm 46 between an end portion arranged to press the up switch 47 when the chuck switch 47 is moved completely backward, and an end portion that presses the chuck switch 49 when the chuck switch 49 is moved forward.
A pin 53 of a lifting lever 52 that is pivotally supported on the side surface of the chassis 8 is fitted into the pin 53 . Similarly, a pin 55 of a lift lever 54 pivotally supported on the side surface of the chassis 8 is fitted into the right slide arm 24, and the lift levers 52 and 8 are provided with elliptical arc portions 56 and 57, respectively. . Further, a turntable 59 supports and rotates the disk, a disk motor 61 has 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. The pickup section 62 and a feeding mechanism section (not shown since it is not directly related to the present invention) for moving the pickup section 62 in the front and back direction are installed, and are fitted into damper holders 63, 64, 65, and 66 fixed to the chassis 8. A unit plate 75 having pins 71, 72, 73, and 74 is attached so as to provide vibration isolation from the chassis 8 by the dampers 67, 68, 69, and 70 bonded together.

Furthermore, the intersection point 76 of the line connecting the centers of the dampers 67 and 69 and the line connecting the center of 68°70 is the turntable 59.
The dampers 67, 68, 69, and 70 are appropriately arranged so as to be located approximately on the line connecting the center of the reading pickup 62 and the center of the reading pickup 62.
A magnet 79 is pivotally supported by shafts 77 and 78 at the rear of the unit plate 75 supported by the chassis 8 and is disposed opposite to the turntable 59 so as to be difficult to transmit to the turntable 75.
or attach the lamp 80 and the arm 8 that holds it.
1 and when it comes into contact with the inner surface 8' of the chassis S, the arm part 81
A clamper holder 82 made of a leaf spring configured to push up the clamper connection is attached, and a crimping opening τ 84 is provided at the front to press the disk enclosure to the transfer roller blades supported at both ends by the chassis 8 during transfer. A shaft part with a disk outer diameter 87 supported by links 85 and 86, one end of which is supported by the unit plate 75; Matching pins 91 and 92 are i? These are provided so as to protrude from the holes 93 and 94 of the chassis 8 so as to be able to come into contact with the lifting levers 52 and 54 mentioned above.

Further, the unit plate 75 is attached to the chassis 8 by a spring 95.
When the Kurareba arm (A) is raised, the vertical direction regulating pin 96 of the unit plate 75 is suspended on both sides.
, 97 and 98 are sharked, and the left and right swift arms 2
When 4 and 46 move forward, each slides to the right (24)
The lower surface portion 99 and the lower surface portion of the left slide arm 46 are brought into contact at an angle of 00°101. Further, when the disk is raised and lowered, a holder "103' supports a positioning lever 103 that can be moved vertically and vertically. The positioning lever 103 has a positioning pin 102 arranged so as to prevent the disc from shifting in the forward direction by slightly exceeding the outer diameter of the disc when the disc is raised or lowered. The positioning lever 103 is placed below the bushing cam 104 which is pivotally supported by the chassis 8, and the cam surface 105 of the bushing cam 104 is fitted with a pin of the left slide gamma 46 to restrict its movement. Also, the Demesque receiver 87 has two springs 10.
6, it is constantly urged toward the unit plate 75 side. It also has an elongated hole 108 so as to be rotatable within a certain angle range relative to the convex portion 107 of the drive gear, and a dog pulley 111 attached with an E ring 110 to a machine shaft 109 that is connected in the rotational direction, and a transfer roller field. A belt 113 is placed between small pulleys 112 that rotate the motor by friction transmission.

Further, the transfer 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, pins 116 and 117 are attached to the unit plate 75 at positions concentrically above the center of the turntable 59 and slightly larger than the outer diameter of the disk, and furthermore, pins 116 and 117 are attached to the chassis 8 at a similar distance to determine whether there is any light blocking directly below. A photoelectronic sensor 118 is provided for sensing. Also, a sensor 11 detects when the disk is inserted approximately half way through the door 9.
9 is provided, and a sensor 121 that detects the position of the door link 10 is also provided at the end 120 of the door link described above, the sensor 118 described above, and the 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, the disk motor 61° drive motor 19. Pickup 62. Plunger 13 is connected to a drive circuit (not shown) and is connected to eject button 3. Play button 4. The other buttons 5 are connected to a signal determination circuit, the display tube is connected to a display circuit (not shown), and the operations of both buttons are controlled by a microconbeater (not shown).

Next, the operation will be explained. When playing a disc, when the disc is pressed against the door 9 in the state shown in FIG. 3, the door link end 120 turns on the sensor 121. As a result, the plunger 13 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 field and the large pulley 111 rotate counterclockwise, and the belt 113 and the small pulley 112 move the transfer roller to the disk. Rotates in the retraction direction. At this time, the rack 27 is disengaged from the drive gear n by the plunger 13, clutch slider 16, and clutch link 30 (state in FIG. 8). Subsequently, the disc space is retracted, and when the sensor 118 stops moving, the drive motor 19 stops and the plunger 13 turns OFF.
becomes. As a result, the door 9 is closed by the force of the spring 17. In addition, the clutch link 30 of the rack 27 rotates and rises due to the force of the spring 15, and engages with the drive gear arm (state in Fig. 9).
. Next, the control circuit (all of the circuits described above) causes the drive motor 19 to rotate in reverse, causing the drive gear to rotate clockwise. In addition,
Even if the drive gear % is reversed, this oversized pulley 111 does not push the protrusion 107 within the rotation angle range of the elongated hole 108, so no power is transmitted and the dog pulley does not rotate. Therefore, the transfer roller blades do not rotate. The rack 27 moves forward to a position where it overcomes the rack stopper 32. After that, the elongated hole 5 pushes the right slide end arm 24. As a result, the right slide arm 46 starts moving forward, and the rotation 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 (state 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 disc space is lowered, and the positioning pin 102 in the front direction, the side wall of the disc holder 87 in the left and right direction, and the pin 116 in the rear direction.
．． 117, it is lowered in a substantially positioned state and placed on the turntable 59. Further, the front end 34 of this unique slide arm pushes up the stopper link 37, lowers the door stopper 35, and locks the door 9 from opening. At the same time, the clamper boat presses down the disk enclosure, and the lower surfaces 99, 100, i of the left and right slide arms 24°46
Since oi separates from pins 98, 97, and 96, unit plate 75 is released from fixation and becomes free. Next, the end of the left slide arm 46 presses the chuck switch 49 (FIG. 11), so the drive motor 19 stops and the disk loading is completed, and then the control circuit causes the turntable 60 to be loaded. The pickup 62 becomes operational and starts playing (the state shown in FIG. 11).

Next, we will explain when to stop playing and take out the disc enclosure. When the eject button 3 is pressed, the control circuit stops the turntable mark, rotates the drive motor 19, and rotates the drive gear counterclockwise. The rack 27 begins to move rearward, and the left and right slide arms 24 and 46 begin to move rearward. Next, the lower surface part 99, Zoo, -
101 contacts the pins 98, 97, and 96, and fixes the unit plate 75 so that it does not move upward.

Furthermore, the raising levers 52 and 54 are connected to the left and right slide arms 2.
4 and 46, the clamp arm (A) 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. Subsequently, as the clamp arm 87 moves up, the tip of the clamper holder 82 comes into contact with the chassis 8, the θ ramper is lifted, the disk 58 is lifted from the turntable 60, and the pressure roller 84 is moved by the spring 106. The disk 58 is pressed against the transfer roller (the state shown in FIG. 13).

Next, the bushing cam 104 is pushed down by the left and right ride arms, 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 presses the up switch 47. 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 6 moves rearward against the springs 15 and 17, rotates the clutch link 30, rotates the rack 27 downward, and disconnects it from the drive gear field. Subsequently, the drive motor 19 reverses, the drive gear n rotates clockwise, and the thick pulley 111, belt 113, . The transfer roller μs rotates in the disk ejection direction via the small boob 1112, and ejects the disk 58.

When the disk passes past the sensor 119, the control circuit activates the drive! The rib motor 19 is stopped. At this time, the plunger 13 is turned off and the door is closed.

In addition, in the Taisei 9 example, the plunger 13 is turned off at this time, but the plunger 13 is left on and when the disk moves away from the sensor 11B, the plunger 13 is turned off.
It is obvious that it is easy to configure the door so that the door is closed by turning 3 off, and in this way the door can be prevented from hitting the disc during ejection.

〔Effect of the invention〕

According to the present invention, when the rank and pinion are engaged, even if a load is applied in the pressure angle direction due to the rotation of the pinion, the rack will slide in the direction of rotation of the pinion with a small load, and the engagement will not shift in the direction of disengagement. Therefore, there is an effect that it can operate reliably even under shooting conditions.

[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 mechanism of Fig. 2, and Fig. 4 is a diagram showing the internal mechanism of Fig. 2. 3 is a left side perspective view, FIG. 5 is a plan view of FIG. 3, FIG. 6 is a view taken along line A-A in FIG. 5,
Figure 7 is a left side view of Figure 3, Figure 8 is a right side view of Figure 3 in operation, Figure 9 is a right side view of Figure 3 in operation, and Figure 10 is a right side view of Figure 3 in operation.
The figure is a left side view during operation of Figure 3, Figure 11 is a left side view during operation of Figure 3, Figure 12 is a BB line arrow diagram of Figure 3,
13 is an operating view of FIG. 12, and FIG. 14 is an exploded perspective view of the vibration insulating section of FIG. 3. 10...Door link 13...Plunger 1
5...Spring 16.Clutch slider 1
7...Close spring n...Drive gear 24...Right slide completed -
M5...Long hole 26...Indentation 27...
・Spring 28...Rack 29...Pin 30...Clutch link 32...Rack holder 1',,,> Agent Patent attorney Katsuo Ogawa No. 17 Koma 2 Figure 3 Figure 5 Figure 5 6 Figure 7 Figure 8 Figure L5 Figure 9 Figure 10 Figure 12 Figure 13

Claims (1)

[Scope of Claims] 1. A clutch mechanism used in a recording disc mounting device comprising a drive gear, a rack disposed so as to be able to engage and be separated from the drive gear, and a holding member that restricts disengagement when engaged, wherein the rack A recording disk mounting device characterized by using a clutch mechanism in which power is transmitted after engaging a holding member. 2. A recording disk mounting device according to claim 1, characterized in that the rack is provided with elongated holes.