JP2001056990A - Disk loading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely guide a disk and to prevent the flawing to a disk surface by starting the intermeshing of a rack by the movement of an insertion detecting lever which detects disk insertion when the disk comes near to a disk withdrawing end position of a roller and retreating a disk supporting surface of a disk height regulating member with a linearly moving rod. SOLUTION: When the insertion of the disk 31 is detected, a motor 6 starts and the revolution of the roller 1 is started via gears and belt, by which the disk 31 is begun to be withdrawn. Before the disk 31 approaches the withdrawing end position, the outer peripheral end on the left side of the disk 31 is guided onto the top of the disk height regulating cam part 27 of a disk holding cam 25. When the disk 31 comes near to the withdrawing end position, the pin at the front end of the disk insertion detecting lever 19 presses an abutment part 16 of a rod 13 to move the rod 13. The disk holding can 25 is then turned via a rack 14, by which the disk height regulating part 27 is parted from the disk 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk loading device for a recording / reproducing device using a disk-shaped recording medium such as a CD (hereinafter simply referred to as a disk).

[0002]

2. Description of the Related Art A conventional disk loading apparatus is shown in FIG.
As shown in FIG. 5, until the disk 31 is clamped on the turntable 40, the disk 31 pulled in by the roller 38 provided near the disk insertion port without means for supporting the disk 31 tip portion fluctuates, There is a possibility that the recording surface of the disk 31 may be scratched on the upper surface of the turntable 40 by being lowered and becoming unstable, failing to maintain a horizontal state, and causing an upper surface of the turntable 40 to be damaged. 30 is a chassis, 37 is a disk guide, and 36 is an upper cover which fixes the disk guide 37. Reference numeral 39 denotes a spring for urging the roller 38 upward. The disk 31 is sandwiched between the disk guide 37 and the roller 38, and is drawn in or ejected according to the rotation direction of the roller 38.

[0003]

According to the present invention, the height of the leading end of a disk drawn by a roller is held horizontally at a constant height during the drawing, and when the disk comes near the insertion end position, it is placed on a turntable. It is an object of the present invention to reliably guide the disk by lowering the disk and prevent the disk surface from being damaged.

[0004]

According to the present invention, there is provided an insertion detecting lever for detecting insertion of a disc, a rod which starts rack meshing by the movement of the insertion detecting lever and moves linearly, a power source for driving the rod, and a rod. And a disc height regulating member that is linked to the movement of the roller, and when the disc comes close to the position where the roller retracts the disc, the rod retracts the disc support surface of the disc height regulating member with a rod.

[0005] Therefore, the height of the tip of the disk can be maintained until the disk is almost on the turntable, so that it is possible to prevent the disk from hitting the upper surface of the turntable at the time of insertion and damaging the recording surface.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, an insertion detection lever which detects insertion of a disk and moves in accordance with the amount of insertion of the disk, and a movement of the insertion detection lever from a predetermined position. A disk loading apparatus comprising: a driven rod that linearly moves to start meshing with a rack; a pinion that drives a rack portion of the rod and the meshing rod; and a disk height regulating member that moves to a retracted position by moving the rod. The height of the tip of the disc that has been inserted and is being retracted is regulated until the retraction is completed, wobbling can be suppressed, and the disc height regulating member is retracted when the retraction is completed. After being transferred and mounted on the table, the disk can freely rotate with the turntable. Further, if the height regulating member is provided closer to the left and right ends than the center of the disc passage, the size of the height regulating portion for guiding the disc can be reduced, and the disc is regulated at the outer periphery of the disc. There is no risk of damaging the surface. Further, a pair of height regulating members may be provided on the left and right, but if the disk is a hard disk like a CD, only one side is sufficient.

According to a second aspect of the present invention, in the disk loading apparatus according to the first aspect, the disk height regulating member is a cam rotatably supported. A large displacement can be obtained by turning a large amount even in a narrow space, and the retreat operation can be performed reliably.

According to a third aspect of the present invention, in the disk loading device according to the first aspect, the disk height regulating member is formed integrally with a part of the rod. The number of parts can be reduced and the configuration can be simplified.

[0009]

FIG. 1 shows a main part of an embodiment of the present invention. Reference numeral 1 denotes a roller, 2 denotes a roller holding arm, and 3 denotes a spring for urging the roller 1 upward. 4
Is a support shaft for rotatably supporting the roller holding arm 2, 5 is a roller pressing portion, 6 is a motor, 7 is a worm gear fixed on the motor shaft, and 8 is formed integrally with the worm gear 7. The gear 9 is a worm wheel that meshes with the worm gear 7, and the rack wheel 12 is driven by the worm wheel 9 at a reduced speed. Reference numeral 10 denotes an intermediate gear driven by the gear 8, and reference numeral 11 denotes a pulley gear which is driven by the intermediate gear 10 to reduce the speed, and drives the roller 1 via the belt. The pulley gear 11 is supported on a support plate 23, moves to the left, releases the mesh with the intermediate gear 10, and can stop the rotation of the roller 1. Reference numeral 24 denotes a return spring of the support plate 23, which constantly biases the support plate 23 rightward. Reference numeral 19 denotes a disk insertion detection lever, and reference numeral 20 denotes a rotation support shaft of the disk insertion detection lever 19, which is supported on another rotation member (not shown) and moves as the disk is inserted and retracted. Reference numeral 21 denotes a disc insertion detection lever in a state after the movement, and reference numeral 22 denotes a position of the support shaft 20 at that time. 13 is a rod having a rack 14, 16 is a contact portion, 15 is a pressing drive portion, 32 is a drive hole,
Reference numeral 17 denotes a roller pressing cam portion, which is provided on the rod 13. Reference numeral 25 designates a cam portion which is inserted by the disc hold cam and regulates the height of the tip of the disc which is in the process of being retracted, and retracts to a position where the disc does not come into contact after the retraction is completed. In the figure, one is provided on the left side, but may be provided on the left and right. Reference numeral 26 denotes a clamper (not shown) control cam provided on the disc hold cam 25, which vertically moves an arm (not shown) holding the clamper. Reference numeral 27 denotes a disk height regulating cam, and 31 denotes a disk at a recording / reproducing position. Reference numeral 29 denotes a motor power-off switch, and reference numeral 30 denotes a chassis. FIG. 2 is a top view of the rod 13, and FIG. 3 is a side view thereof. FIG. 4 is a top view of the disc hold cam 25.
The protrusions 34 and 35 are position-controlled by the drive hole 32 and the side wall following the drive hole 32, and regulate the rotation position of the disc hold cam 25.

[0010] The operation of the disk loading device configured as described above will be described below.

When the insertion of the disk 31 is detected, the motor 6
Is started, the roller 1 starts rotating via the gear train and the belt, and the disk 31 starts to be pulled in. Before the retraction of the disc 31 approaches the end position, the outer peripheral end on the left side of the disc 31 is supported and guided by the top of the disc height regulating cam portion 27 of the disc hold cam 25. When the pin at the tip of the disc insertion detection lever 19 that has been moved by the part pushes the contact part 16 of the rod 13 and moves the rod 13 toward the front side against the force of the return spring 18, the rack 14 rotates the pinion wheel. 12
And starts to be driven forward by the power of the motor. The movement of the rack 13 causes the pulley gear 1
2 is disengaged from the gear 8 to cut off the transmission of the drive to the roller 1, thereby stopping the retraction of the disk 31 and the protrusion 35 of the disk hold cam in the drive hole 32.
To rotate the disk hold cam 25 to separate the disk height regulating portion 27 from the disk 31. At the same time, the clamper control cam section 26 lowers the clamper (not shown) and clamps the disk 31 on the turntable 43. At the same time, the roller 1 is pressed down by the inclined surface of the roller pressing cam portion 17 at the tip of the rod 13, and the roller 1 is separated from the lower surface of the disk 31. The rod 13 is driven by the pinion wheel. When the switch 29 is turned off, the power supply to the motor is stopped, and the loading operation of the disk is completed. Rod 13 immediately before the end of this operation
, The pressing drive unit 15 moves the disc insertion detection lever 1
9 is further rotated so as to move away from the leading end of the disk 31 and to be retracted and held at a position where the rotation of the disk 31 is not hindered.

In the embodiment, a cam that rotates by the movement of the rod is used as the disk height regulating member. However, the invention is not limited to this, and a linear movement may be used. A disk height regulating portion may be provided on the top.

[0013]

As described above, according to the disk loading device of the present invention, the disk height regulating member is provided near the drawing-in end position in conjunction with the disk drawing operation. Since the pull-in is performed while holding and restricting the tip of the disc, it is possible to prevent the disc surface from being damaged.

[Brief description of the drawings]

FIG. 1 is a top view showing a main part of an embodiment of a disk loading device according to the present invention.

FIG. 2 is a top view of the rod.

FIG. 3 is a side view of the same.

FIG. 4 is a top view of the disc hold cam.

FIG. 5 is a front view of the same.

FIG. 6 is a side view showing a main part of a conventional disk loading device.

[Explanation of symbols]

 Reference Signs List 1 roller 6 motor 7 worm gear 12 pinion gear 13 rod 14 rack 25 disk hold cam 27 disk height regulating cam 31 disk

Claims (3)

[Claims] 1. An insertion detection lever for detecting insertion of a disk, a rod that starts rack meshing by the movement of the insertion detection lever and moves linearly, and a disk height restriction for restricting the height of a disk tip that is inserted and is being retracted. A disk loading device comprising a member, a pinion wheel for driving a meshing rod with a rack, and wherein the rod height regulating member is retracted by a rod movement generated by a disk insertion detecting operation of a disk insertion detecting lever. 2. The disc loading device according to claim 1, wherein the disc height regulating member is a rotatably supported cam. 3. The disc loading device according to claim 1, wherein the disc height regulating member is formed integrally with a part of the rod.