JPS5814368A - Disk holding device - Google Patents

Abstract

PURPOSE:To simplify the fitting of the disk and to eliminate the vibration of the surface of the disk when the disk is rotated, by clamping the disk on the disk driving motor and by separating the disk guide from the disk. CONSTITUTION:The titled device has a disk pocket 17 which is held between the position where a disk 30 is attachable and detachable and the disk reproducing position under free rotation is equipped with disk guides 2 and 6, and a disk pocket holding the inserted disk 30, and a clamper 9 which clamps the disk 30 on a disk driving motor 13. When the disk pocket 17 is turned from the position where the disk is attachable and detachable to the disk reproducing position, the clamper 9 clamps the disk 30 on the motor 13 and, at the same time, guides 2 and 6 are separated from the disk 30.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc holding device for a disc player that uses a disc-shaped record carrier such as a video disc, an audio disc, or a record. Simply by inserting the disc and rotating it to the disc playback position, the disc is flanged by the disc rotating means and the disc guide is separated from the disc, making it ready for playing.

Conventionally, in order to reduce the depth of disc players,
A so-called vertical disc player is known in which the disc is arranged vertically and played, but in such a player, it is necessary to flange the disc to the disc rotation means, and the disc must be held with one hand to operate the clamper. The operation of putting it on and taking it off was cumbersome.

An object of the present invention is to provide a disc holding device that can be flanged to the disc rotating means in such a disc player by simply inserting and rotating the disc.

An embodiment of the invention will be described with reference to the drawings.

On the front of the player cabinet, a door panel 1 is pivotally supported by a pin 7a provided at its lower end, and has two positions: the disc loading/unloading position shown in FIG. 4(A) and the disc playback position shown in FIG. 4(B). It is designed to rotate between.

The door panel IK has a disc 3 inserted inside it.
A disc pocket for holding the disc and a clamper 9 for fixing the disc to the motor shaft of the disc drive motor 13 are provided.

There are two disc pockets located parallel to the door panel.
The disks are made up of id 2 and 6, and a disk mounting portion 17 having a U-shaped groove in which the disks are placed.

The disc guy F2 is moved in the direction away from the door panel (closer to the disc guide 6) by the four coil springs 4.
(direction) K is biased, and in the disc attachment/detachment position, by four stopper pins 3 protruding from the door panel,
The position of the disc at the playback position is regulated by four pins 15 and 15a protruding from the base 12 of the player cabinet.

Each coil spring 4 has a spring guide r protruding from both sides of the spring panel 1 and the disc guide P2.
5 has been inserted.

The disc guide 6 is fixed to angles 7 provided on both left and right sides of the door panel 1 and having a U-shaped cross section.

The upper ends of the disk guides r2 and r6 are inclined to opposite sides, making it easier to insert the disk 3o.

As shown in FIG. 5, the disk mounting section 17 has a U-shaped groove on the upper side for placing the disk 3o, is pivoted at the tip of the arm 16, and is mounted along the disk guides 2 and 6. It is designed to be able to slide up and down.

The arm 16 is connected to the shaft 2 fixed to the player cabinet.
As shown in FIG. 4(a), the door panel 1 is supported by a long hole 18 at the end thereof, and restricts the amount of rotation of the door panel 1 at the disk attachment/detachment position.

A pin 23 is disposed on the lower side of the arm 16 and extends between support plates 21 and 22 that protrude from the case foot guide 6.
As shown in FIG. 4 [A], when the door panel 1 is rotated to the disk attachment/detachment position, the arm 16 is
is pushed up, and the disk mounting portion 17 slides upward.
and push up the disk 30 to a position where it can be easily taken out.

The pin 23 is separated from the arm 16 at the disc playback position, and the disc mounting portion 17 is trapped away from the disc 30, as shown in FIG. 5(c).

The clamper 9 is provided with a magnet 8 at its rear end (the end closer to the door panel), and is always attached in a direction away from the door panel due to the repulsive force with a magnet 10 of the same polarity provided at an opposing position on the door panel 1. The four angles 1 each have an inverted cross-section when the disc is installed and removed.
The location is restricted according to 1.

An annular disk clamp surface 9a having a concave portion in the center is formed on the front surface of the clamper 9, and this portion holds the peripheral portion of the center hole of the disk 30 under pressure on a holder 14 fixed to the motor shaft.

The disc clamping surface 9a of the clamper 9 is shaped like a trap so that it is slightly recessed from the surface of the disc guide 2 in the disc mounting/unloading position, as shown in FIG. This prevents you from hitting the edge.

The disk flange surface 9a of the clamper 9 and the surface of the disk guide 2 may be made to be on the same plane.

Further, as shown in FIG. 7, the disk clamping surface 9
If the taper 9b is formed on the outer periphery of the disk guide 20, even if it protrudes from the surface of the disk guide 20, it will not interfere with the insertion of the disk.

As shown in FIG. 2, a lock plate 25 is pivotally supported on the left side when viewed from the front of the player cabinet, and is mounted on the door panel by the biasing force of a spring 26 at the disc playback position K (the state shown in FIG. 1). The door panel 1 is engaged with the pin 7b, and the door panel 1 is unlocked by the plunger 28.

A disk drive motor 13 is attached to a pace 12 provided vertically in the player cabinet, and a holder 14 is fixed to the motor shaft.

The holder 14 holds the disc 3 as shown in FIG.
Spindle part 14a that fits into the center hole of 0 for positioning.
, a center spindle portion 14b that fits into the center hole of the clamper 9, and a flange portion 14c that abuts around the center hole of the disk surface.

At the disc playback position, the disc 30 is held between the disc flange surface of the reframper 9 and the flange 14c of the holder 14 due to the repulsive force of the magnets 8 and 10.

If the magnet 8 or the magnet 10 is attached to the clamper 9 or the door panel 1, for example, with screws so that the position can be adjusted, the clamper 9 can be attached to the holder 14.
The pressing force can be adjusted, and the same pressing force can be obtained even when using disks with different thicknesses.

The pace 12 has four fencing holes 15 and 15a protruding from the position facing the spring 4 provided on the door panel 1, and as shown in FIG. 8, the door panel 1 is rotated to the disc playback position. At this time, the disc 30 is separated from the disc guide 2 by coming into contact with the disc guide 2 and preventing its rightward movement.

Next, its operation will be explained.

The door panel 1 is opened and rotated to the disk attachment/detachment position, the disk 30 is inserted between the disk guides 2 and 6, and the door panel 1 is closed.

As the door panel 1 rotates toward the disc playback position, the disc mounting part 17 descends, and the holder 14 spins and the pull part 14a fits into the center hole of the disc to position it. pins 15 and 15a
comes into contact with the disc guide 2 and rotates further, the center snap pull part 14b of the holder fits into the center hole of the clamper 9, and after clamping the disc, the clamper 9 separates from the angle 11 and the disc is placed. The portion 17 further descends and separates from the disk, leaving the disk 30 supported only by the motor shaft.

Then, the disc drive motor 13 starts rotating, and the well-known optical pink-up 24 moves in the radial direction of the disc to perform reproduction.

When playback is finished, press the eject switch (inner shown) on the front of the player cabinet.
The silanger 28 is energized and the lock plate 25 rotates counterclockwise in FIG. The disk 30 is pushed up to a position where it can be easily taken out.

The one shown in FIG. 9 is another embodiment, and the difference from the above embodiment is that of the four pins 15 and 15a provided on the base 12, the lower two (15a) are omitted. However, by the arm 16 that supports the disk mounting section 17,
The point is that the position of the disc at the disc playback position is regulated at P2.

Therefore, the lower end of the disc guide 2 is bent into a 5-shape, and when the door panel is rotated to the disc playback position, this L-shaped bent part 2a
The tip of the arm 16 comes into contact with the disc guide 2 to prevent it from moving further to the right.

As explained above, the disc holding device of the present invention is
By simply inserting the disc at the disc loading/unloading position and rotating it to the disc playback position, the disc is flanged to the disc rotating means and the disc guide is separated from the disc, making loading the disc extremely easy. Furthermore, even if so-called surface waviness occurs during disk rotation (particularly until rotation stabilizes), the risk of contact with other members can be eliminated.

In the above embodiment, the disc is placed vertically at the disc playback position, but the disc holding device of the present invention is not limited to such a device, and may be used for playing the disc in a tilted state, for example. Similar effects can be obtained even when used in a disc player.

[Brief explanation of drawings]

Figures 1 to 3 are a front view, a left side view, and a right side view (partial views) showing the entire internal mechanism of an embodiment of the present invention.
, FIGS. 4 and 5 are an overall view and an enlarged view of the main parts of the disc-up mechanism, FIGS. 6 and 7 are explanatory diagrams of the operation of the clamper of different embodiments, and FIGS. 8 and 9. 2A and 2B are explanatory diagrams illustrating the escape of the disc guide in different embodiments. 1...Door panel 2 and 6...Disc guide 4...Coil spring 9...Crannograph 13...Disc drive motor 14...Holder 15 and 15a...Bin agent patent attorney Makoto Oka - Figure 4 (a)
(b) Figure 5 (a) Figure 9 (a) (0) 2G 16

Claims (1)

[Claims] The disc pocket is rotatably supported between a disc loading/unloading position and a disc playing position, has a disc guide, a disc pocket for holding an inserted disc, and a clamper for fixing the disc to a disc rotating means, A disc holding device characterized in that a clamper fixes a disc to a disc rotation means and separates a disc guide from the disc by rotating to a disc playback position.