JPH0344860A - Disk holding mechanism for disk player - Google Patents

Abstract

PURPOSE:To contrive miniaturization and thin formation of the disk holding mechanism by sinking a disk retaining part into the side of a disk receiving part, bending plural flexible disk retaining members outside and bringing the disk into pressurized contact with the disk receiving part. CONSTITUTION:The disk retaining part 2 is supported coaxially with the disk receiving part 1 and movably in the axial direction. Then, the disk receiving part 1 and the retaining part 2 are connected up by the plural flexible disk retaining members 11, and when the disk retaining part 2 is sunk down, the flexible retaining members 11 are bent to bring the disk 3 into pressurized contact with the disk receiving part 1. By this method, the holding mechanism is miniaturized and reduced in thickness and weight.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc holding mechanism for an optical disc player, and more particularly to a compact type disc holding mechanism suitable for portable CD players and the like.

[Prior Art] Disc holding R' in a conventional optical disc player! /4 examples are shown in FIGS. 4 and 5.

FIG. 4 shows the state in which the disc is held.

The disc holder 1 is fixed to a shaft 7 supported by a bearing 6, and a steel disc holder 12 loosely fitted to the disc holder arm 4 is attracted to a magnet 5 fixed to the upper part of the disc holder 1. Rubber 8 by being
The disc 3 is pressed against the disc receiving part 1 through the disc 3, and the disc 3 is held.

On the other hand, FIG. 5 is a diagram showing the state when the disc is taken out from the disc receiving part.

As shown in the figure, by moving the disk holding arm 4 upward, the disk holding arm 12 is pulled away against the attraction force of the magnet 5, and the disk 3 becomes ready to be replaced.

[Problems to be Solved by the Invention] In the above-mentioned conventional device, since the suction force of the magnet is used to hold the disk, the disk holding part needs to be made of steel, which improves rust resistance and makes the device lighter. There will be restrictions on the selection of materials for this purpose. Further, regarding the height dimension of the holding mechanism, even when the disc is being held, the maximum height required when the disc is taken out is H, which poses a problem in that there is a restriction when a portable player is desired to be thin and small.

This invention was made in view of the above points, and
The purpose is to provide a disk holding mechanism with excellent functions suitable for making the mechanism of the disk holding mechanism smaller and thinner.

[Means for Solving the Problems] The disc holding mechanism 81 of the present invention is a disc holding mechanism consisting of a disc receiving part and a disc pressing part for fixing the disc to the disc receiving part. The coaxial bracket is supported so that it can move in the axial direction,
The disc receiving part and the disc holding part are connected by a plurality of flexible disc holding members, and when the disc holding part sinks, the flexible disc holding members bend and press the disc against the disc holding part. It is.

[Function] According to the disc holding mechanism of the disc player of the present invention, by sinking the disc holding part between the disc receiving parts, the plurality of flexible disc holding parts provided between the disc receiving part and the disc holding part are The member is bent outwardly to press the inner edge of the disk, thereby pressing the disk into contact with the disk receiving portion. Also, when removing the disk,
By separating the disc holding part from between the disc receiving parts, the flexible disc holding member is extended and separated from the inner edge of the disc, allowing the disc to be ejected.

[Embodiment] An embodiment of a disc holding mechanism in a disc player of the present invention will be described based on FIGS. 1 to 3.

FIG. 1 is a plan view of the disc in the holding state, FIG. 2 is a sectional view of the same side, and FIG. 3 is a sectional view of the disc in the open state.

In FIG. 1, reference numeral 1 denotes a disk receiving portion, which is rotationally driven by a gear or belt transmission device (not shown).
The disk 3 is coplanar with the flexible disk holding member 11.
hold.

The disc holding part 2 has the role of guiding the inner edge of the disc when it is mounted, and also bending the flexible disc holding member 11 to press the disc against the disc receiving part 1 and hold it securely.

The disk holding part 2 is fixed to the shaft 7, and the disk holding part 2 and the disk receiving part 1 are connected by a plurality of flexible disk holding members 11.

A coil spring 10 is interposed between the disc holding part 2 and the disc receiving part 1, and biases the disc holding part 2 in the direction of sinking.

Further, the circumferential diameter of the disc holding member 11 in the extended state is set to be smaller than the inner diameter of the disc.

The shaft 7 is supported by a bearing 6, and when the bearing 6 slides in the horizontal direction, the shaft 7 moves up and down together with the disk holding part 2.

9 is a stopper for regulating the movement of the disc receiving part 1;
When the disc holding part 2 moves upward together with the shaft 7, movement of the disc receiving part 1 is restricted.

Next, the operation of the disc holding mechanism of the disc player of the embodiment will be explained with reference to the drawings.

As shown in FIG. 2, in the disc holding state, the disc holding part 2 sinks downward due to the repulsive force of the coil spring 10, and the flexible disc holding part 2 connected between the disc holding part 2 and the disc receiving part 1 The disc holding member 11 is bent in the direction of the outer circumference of the disc, and presses and holds the disc 3 against the disc receiving portion 1 with an appropriate force.

The case where the disk 3 is removed from this state will be explained with reference to FIG.

When the bearing 6 in the state shown in FIG. 2 is slid in the direction of the arrow (open to the left), the shaft 7 is pushed upward along the slope of the bearing 6, resulting in the state shown in FIG. 3. At this time, since the upward movement of the disk receiving portion 1 is restricted by the stopper 9, the disk holding member 11 is in an extended state. At this time, the diameter of the disc holding member 11 in the circumferential direction is smaller than the inner diameter of the disc 3, so the disc 3 can be easily taken out.

On the other hand, when holding the disk 3, by sliding the bearing 6 in the state shown in FIG.
The coil spring 10 sinks the shaft 7 and the disk holding part 2 downward, bends the disk holding member 4, and holds the disk 3 in the state shown in FIG. 2.

The material of the disc holding member 11 may be rubber-based or resin-based as long as it is flexible and can withstand repeated bending.

As an application of this invention, by arranging the pickup section (not shown) in the right-hand bend shown in FIGS. 2 and 3 and interlocking the bearing 6 and the pickup section, the pickup section is located at the innermost circumference. When the disc is in the stopped state, the disc can be replaced in the state shown in Fig. 3, and when the pickup section starts moving toward the outer circumference, the disc holding state shown in Fig. 2 can be achieved, so that the disc holding can be automated. is possible.

[Effects of the Invention] According to the disc holding mechanism of the present invention, unlike conventional systems, magnets are not used to hold the disc, so materials for the constituent members can be freely selected, contributing to the weight reduction of the player, and the upper part of the disc is It is no longer necessary to arrange a movable member such as a disc holding arm, and the height of the holding mechanism is 1 as shown in Fig. 2 when the disc is held, and L as shown in Fig. 3 when the disc is released. Since it is significantly shorter than the previous one, the holding mechanism can be made smaller, and
It is possible to make the player significantly thinner and lighter.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the disc holding state in the disc holding mechanism of a disc player according to an embodiment of the present invention, FIG. 2 is a sectional view showing the disc holding state in the disc holding mechanism of the disc player, and FIG. FIGS. 4 and 5 are cross-sectional views showing the disc holding state and disc releasing state of the disc holding mechanism of the conventional disc player, respectively. FIGS. 1... Disc receiving part, 2... Disc holding part, 3
...Disc, 4...Disk holding arm, 5...
・Magnet, 6... Bearing, 7... Shaft, 8... Rubber, 9... Stopper, 10... Coil spring, 11.
... Disk holding member, 12... Disc holding member.

Claims (1)

[Claims] In a disc holding mechanism consisting of a disc receiving part and a disc holding part for fixing the disc to the disc receiving part, the disc holding part is supported coaxially and movably in the axial direction with the disc receiving part, and the disc holding part and the disc holding part are supported. A disc holding mechanism for a disc player, which is connected by a plurality of flexible disc holding members, and configured so that when the disc holding parts sink, the flexible disc holding members bend to press the disc against a disc receiving part.