JPH0222851Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking mechanism in a disc loading device for a disc player.

In general, a loading device for a disc player such as an optical disc, as shown in FIG. disk 2
When loaded, the arm 4 is lowered to press and fix the disk 2.

As shown in the figure, the conventional locking mechanism in such a loading device has a notch 5 on the upper surface of the disk holder 3 and an arm 4.
It has a structure in which an engaging pawl 6 is provided on the lower surface, and when a disk is loaded, the arm 4 is lowered and the engaging pawl 6 is engaged with the notch 5 to be locked.

Therefore, when the disk holder 3 is forcibly moved during locking, the engaging claw 6 of the arm 4 comes off from the notch 5, causing the inconvenience that the arm 4 is pushed up.

The present invention improves on these conventional drawbacks, and will be explained below with reference to the drawings.

In the figure, reference numeral 3 denotes a disk holder that is provided so as to be movable in the left-right direction in the figure along a guide rail 7, and an engagement part 10 is formed by cutting out a rear end horizontal part 9 of the side structure 8.

11 is a mounting plate, and there is a claw part 12 at the tip at the bottom position.
An engaging claw piece 13 having a shape is rotatably attached to the shaft, and is biased counterclockwise by a first spring 14. Further, this engaging claw piece 13 is configured to be stopped at a substantially horizontal position by the mounting plate 11, and is configured to freely rotate in the clockwise direction against the force of the first spring 14. This engaging claw piece 13 is located below the rear end horizontal portion 9 of the disk holder 3, so that the claw portion 12 engages with the engaging portion 10 when the disk holder 3 is in the retracted position (left end position). There is.

Reference numeral 15 denotes a release lever rotatably mounted above the mounting plate 11, and first and second pins 16 and 17 are provided at a predetermined distance apart from each other in the longitudinal direction of the release lever. The lever 15 is the second spring 1
8 in the counterclockwise direction.

Reference numeral 19 denotes a first cam that abuts on the release lever 15 and is pivotably mounted to be rotatable by a drive source such as a motor (not shown), and is rotatable coaxially and integrally with the first cam 19. A second cam 20 is pivotally attached to the second cam 20, and the third pin 21 of the second cam 20 and the rear end of an arm 22 rotating about a shaft 23 engage with each other. As the arms 19 and 20 rotate, the arm 22 moves up and down.

That is, when the first and second cams 19 and 20 rotate counterclockwise, the third pin 21 pushes up the rear end of the arm 22, causing the arm 22 to rotate clockwise and descend. , the release lever 15 is rotated counterclockwise while in contact with the first cam 19 by the second spring 18, and stops at the lowest position of the arm 22. Further, when the first and second cams 19 and 20 rotate clockwise, the third pin 21 moves downward, and the arm 22 is thereby raised by the third spring 24, and at the same time, the release lever 15 is Rotated clockwise by the first cam 19, the first pin 16 engages the engaging claw piece 13.
In order to ride on the upper end, the engaging claw piece 13 rotates clockwise, thereby causing the claw part 12 to move onto the engaging part 1.
When it goes away from 0, the lock is released.

Further, at the rear end of the horizontal portion 9 of the disk holder 3, an engaging claw piece 13 is attached to the engaging portion 10 when the lock is released and the disk holder 3 moves to the right.
After it comes off, the second pin 17 of the release lever 15
The second pin 17 is pushed in a direction perpendicular to the moving direction of the disk holder 3 to release the contact between the first pin 16 of the release lever 15 and the engaging claw piece 13. A fourth pin 2 for rotating the engaging claw piece 13 counterclockwise to the horizontal position by the first spring 14 and returning it to the original position.
5 is provided.

The operation will be explained below.

[1] When the arm 22 is raised and the disk holder 3 moves to the right and pops out (Fig. 2), the first and second cams 19, 20
and the release lever 15 is in a clockwise rotated position, and the engaging claw piece 13 is in the position where the release lever 1 is rotated clockwise.
It is in a horizontal position where it rides almost to the center of the first pin 16 of No. 5.

[2] Disk holder 3 loaded with a disk
moves to the left, and its horizontal portion 9 engages the engaging claw piece 1.
3, the engaging claw piece 13 rotates clockwise as the disk holder 3 moves, and at the retracted position where the disk holder 3 has moved to the left end position, the locking claw piece 13 rotates clockwise as the disk holder 3 moves. The disc holder 3 is engaged with the engaging portion 10 and locked. (Figure 3).

[3] After that, the arm 22 descends and becomes ready for playing. At this time, the first and second cams 19,
20 rotates counterclockwise, the release lever 15 also rotates counterclockwise, and the first pin 16 is positioned directly above the engaging claw piece 13.

[4] When the performance ends and the arm 22 rises, the first and second cams 19 and 20 rotate clockwise, and accordingly, when the release lever 15 rotates counterclockwise, the first cam 19 and 20 rotate clockwise. Since the pin 16 comes into contact with the upper end surface of the engagement claw piece 13 and pushes it downward, the engagement claw piece 13 rotates clockwise, and the claw part 12 touches the engagement part 10 of the disk holder 3. The lock state is released.
(Fig. 4) [5] After that, when the disk holder 3 moves a predetermined distance to the right, the fourth pin 25 of the disk holder 3 comes into contact with the second pin 17 of the release lever 15, causing it to move. Since the engaging claw piece 13 is pushed in a direction perpendicular to this direction, the engaging claw piece 13 is rotated counterclockwise by the first spring 14 and returns to the original horizontal position, and becomes the initial state [1].

As described above, the locking mechanism of the present invention consists of mechanical elements such as the mounting plate 11, the engaging claw piece 13, and the release lever 15, and includes an arm lifting mechanism and its driving source, a disk holder moving mechanism, and its driving source. Since it is characterized by a structure that is mechanically isolated from In the locked state, the force from the disk holder is applied to the chassis body via the engaging claw piece and the mounting plate, and does not adversely affect other mechanisms and parts that affect the performance, such as the arm lifting mechanism and disk holder movement mechanism. It has excellent advantages such as

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the structure of a locking mechanism in a conventional disk loading device, and FIGS. 2, 3, and 4 are diagrams showing the structure of a locking mechanism in a disk loading device of the present invention. 1 is a disc player, 3 is a disc holder, 9 is a horizontal part, 10 is an engaging part, 11 is a mounting plate,
12 is a claw portion, 13 is an engaging claw piece, 14 is a first spring, 15 is a release lever, 16 is a first pin, 17
is the second pin, 18 is the second spring, and 25 is the fourth pin.

Claims (1)

[Claims for Utility Model Registration] A disk loading device equipped with a lock mechanism having the following constituent elements (a) to (g). (a) A disc holder 3 that moves within the disc player 1 and has an engaging part 10 on the rear end horizontal part 9. (b) A mounting plate 11 arranged in parallel with the movement path of the disk holder 3. (c) An engaging claw piece 13 that is rotatably attached to a lower position of the mounting plate 11 and has a claw portion 12 that engages with the engaging portion 10 when the disk holder 3 is in the retracted position. (d) A first spring 14 that biases the engaging claw piece 13 in a counterclockwise direction. (E) It is rotatably supported above the mounting plate 11 and has first and second pins 16 and 17, and when the lock is released, it rotates clockwise and the first pin 16 A release lever 15 that rotates the engagement claw piece 13 clockwise to separate it from the engagement portion 10. (F) A second spring 18 that biases the release lever 15 in a counterclockwise direction. (G) The engaging portion 10 of the disk holder 3 is provided on the rear horizontal portion 9 of the disk holder 3.
After the engagement claw piece 13 is removed from the release lever 15
a fourth pin 2 that presses the second pin 17 in a direction substantially perpendicular to the direction of movement of the disk holder 3;
5.