JPS58212649A - Guiding device of disc - Google Patents

Abstract

PURPOSE:To improve the reliability of automatic guiding, by descending a disc while being rotated, guiding the disc from the 1st inclined surface with a fixed guiding value to the center hole of the disc, and detecting the center of the disc precisely at the 2nd inclined surface. CONSTITUTION:The disc 6 is descended and its external peripheral end part is abutted to a disc sheet 29 mounted on a back plate. The disc 6 is guided along the 1st inclined surface 32 of a center spindle 24 with a guiding value of (g) at least formed by the upper internal peripheral end of a center hole 31 of the disc 6 and the 1st inclined surface 32 and abutted to the disc sheet 29 (I). When the disc 6 is pushed moreover, the disc 6 is moved upwards by a value (h) and elevated on the external periphery of the center spindle 24 (II). Moreover, the disc 6 is moved upwards by a value G' along the 2nd inclined surface 33 of a disc guide 25 so that the center of the disc 6 is made coincide with the center of the disc guide 25 attached to the main shaft of a main motor.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for introducing a disk into a center spindle that rotates with a motor shaft, and more particularly to a device for introducing a disk into a center spindle that rotates with a motor shaft, and particularly to a disk introduction device suitable for players using disk-shaped disks such as digital audio disks.

The purpose of the present invention is to precisely position and introduce the positional relationship with the center spindle on the motor shaft that serves as a guide at a certain position when installing the disc, and then install the disc in a playable state. The object of the present invention is to provide a disk introduction device that allows

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4.
As shown in Fig. 5. FIG. 1 is a front view of one embodiment of a digital audio disc, in which 1 is a front panel made of synthetic resin or die-casting, which covers the front surface and is decorated, and 2 is an operation knob for operating the device. kind,
3 is a power knob for turning on and off the power, 4 is a display section that shows the operating status, 5 is a mechanism section for loading and unloading a disk,
6 indicates the position on the disc where the disc is in the playing state.

2 and 3 are side partial cross-sectional views according to the invention, with the disk 6 being manually loaded.

A transparent blind 7 is fixed in front of the disc holder 40 which has a built-in mechanism, and a part of the disc 6 can be seen through the back plate 9 which has an insertion slot 10 for inserting the disc 6 and the transparent blind 10. The back plate 9, which is shaped like a box and forms an insertion opening 39 for the disc holder 6, faces the disc holder 40 and forms a box shape, and a transparent plate 9 forms a part of the insertion opening 9 for the disc 6 therebetween. The two disc guides 8 are sandwiched between the disc guides 8 and are fixed to each other with screws. Inside it, there is a slider 10 that moves the disk up and down, and an elevator piano 11 (Figure 4). This slider 10 is combined with a connecting plate 12 exposed at the rear, a roller 3 is attached to this, and an inclined plate 14 is attached to the connecting plate 12.
Slider 1
It has a structure that moves up and down around 0. On the other hand, a shaft 16 protruding left and right from the disk holder 8 on the unit plate 15
is rotatably held by an L fitting 17 and fixed to the unit plate 15. Further, a drive lever 19 is connected to a drive column 18 that protrudes rearward from the puncture plate 9, and the drive lever 19 and drive support 18 are connected to each other until a certain force is applied.
A spring is inserted so that it moves in the same body as s, and moves differently when a force on the force field is applied to it. One end of the drive arm, which is directly connected to the drive motor 21, is inserted into the elongated hole of the drive lever 19, and as the drive motor 21 rotates, it slides through the elongated hole, so that the drive lever 19 and the drive column 18 are integrated. By rotating,
The attachment/detachment mechanism section 5 opens and closes. A main motor 22 that rotates the disc 6 during performance is fixed to the unit plate 15, and a turntable 23 that receives the disc and a center spindle 24 that guides the disc when it is introduced are fixed to this motor shaft. Disc guide 2 that determines the center position relative to the main motor spindle of 6
There are 5. On the other hand, the disk holder 9 is rotatable and the clamp holder 2 to which the lamp arm 26 is attached is attached.
It is engaged with 7. This clamp holder 27 contains a magnet, and the disc holder 28 that holds the disc 6 also contains a magnet, so that they repel each other. FIG. 3 shows a state in which the disc 6 is in a playable state and is held down by a clamp holder. Similarly, FIG. 4 shows a front view in the playing state.

FIG. 5 shows that after inserting the disc by hand as shown in FIG. 2, and before entering the playing state as shown in FIG. FIG. 3 is a diagram showing a process up to introduction into a turntable 23. FIG.

Next, a method for installing highly reliable disks according to the present invention will be explained. First, from the disk manual insertion stage shown in FIG. 2, the drive motor 21 rotates and the mounting mechanism 5 rotates in the closing direction, and the disk 6 is lowered. The outer peripheral edges collide. The gas rider descends further by 10 degrees and stops at a position away from the outer periphery of the disc. At this time, the upper inner peripheral end of the center hole 31 of the disk 6 and the first inclined surface 32 provided on the center spindle 24 are arranged so that the disk is introduced along the inclined surface with a guide value of at least g. A disk seat 29 is provided (state 1). From this state, Tia,
The disc holder 28 and clamp holder 27 move toward the disc, and the disc holder 27 and the center of the disc 6 are pushed into each other. When the countersunk disk 6 is pushed, the disk moves upward by the h value and climbs onto the outer periphery of the center spindle 24. (State of U) When pushed further, the disk guide 25 moves upward by the G value along the second inclined surface 33, and the center of the disk 6 and the main motor σ
) main shaft (the attached disc is A1! The surface of the part of the disc where the center of 25 coincides with the turntable 23
The disc 6 hits the receiving surface 34 of the main motor and is perpendicular to the motor shaft, so that the disk 6 can be securely fixed and rotated with the rotation of the main motor without causing surface vibration or peripheral vibration.

A part of the disc seat 29 and the external cause of the disc 6 (also, the value that moves upward along the first inclined surface 32 and the second inclined surface 33, i.e., a gap is created by h, + - u - t7, and even when rotating) It does not touch the disc (state III).When this stone is in the playing state, the magnet 30 and the disc holder 28 (the attached macnet 35) are attracted and hold the disc, and the magnet 30 and the disc holder 28 (which is attached The guide wall 37 of the disc holder 28 is engaged with the outer periphery of the center spindle 24 and presses down the disc, and the clamp holder 27
It rotates with the rotation of the disk 6 without contacting inside.

On the other hand, when removing the mounted disc from the disc guide 25 and center spindle 24, from the playable state shown in FIG. Next, as the outer periphery of the disk 6 hits the inner wall 38 of the back plate 9 and rotates forward, the center hole of the disk is sequentially pulled out from the disk guide and the center spindle, and thereafter, as the drive motor rotates, the slider and the elvage 1 The arm moves upward to lift the disk and return to the state shown in FIG.

As described above, according to the present invention, the disk is rotated downward to a certain guide value g with respect to the center hole of the disk.
Since the center of the disk can be accurately brought out on the second inclined surface by holding the disk and inserting it from the first inclined surface, the reliability of automatic introduction is improved and there is no possibility of the disk not being inserted and being damaged. .

[Brief explanation of the drawing]

Fig. 1 is a front view of one embodiment of the digital audio disc of the present invention, Fig. 2 is a side sectional view when the disc is raised or inserted by hand, and Fig. 3 is a partial side view of the disc in the playing state. 4 are partial front views of the mounting mechanism, and FIG. 5 is a diagram showing the principle of disk introduction of the present invention. 28... Disc holder 29... Disc seat 30
... Magnet 31 ... Center hole 32 ... First inclined surface 33 ... Second inclined surface 34 ... Receiving surface
35...Magnet 36...Magnet 37...Guidance Wall 〆゛' Agent Patent Attorney Usui 1) Li ・i'l:j. -,,:,1" O 3 Figure 4m

Claims (1)

[Claims] In a disc introduction device consisting of a disc, a turntable, a disc guide, a center spindle, and a disc seat, the disc is placed against the disc seat, guided by the first inclined surface of the center spindle, and then guided by the second inclined surface. A disc introduction device characterized in that it is installed in a playing state.