JPH0344859A - Disk holding mechanism for disk player - Google Patents

Abstract

PURPOSE:To contrive miniaturization and thin formation of the holding mechanism by constituting a disk retaining part out of plural spheroidal bodies to be guided by a disk retaining part regulating member. CONSTITUTION:The disk retaining part is constituted of plural spheroidal bodies 12 to be guided by the disk retaining part regulating member 2, and the spheroidal bodies 12 are energized by a spring 9 to be likely pushed out of an inner diameter of a disk 3 to the outside. Furthermore, the disk retaining part regulating member 2 is energized by a spring 10 in order to move apart from a disk receiving part 1, and a claw 2a provided to the disk retaining part regulating member 2 is worked to press the spheroid bodies 12 into the inside from the inner diameter of the disk 3 by pressing the regulating member 2. Consequently, when the disk 3 under mounting is lightly pressed, the spheroidal bodies 12 escape inside, and after the disk 3 passes by the spheroidal bodies 12, the disk 3 is pressigly held by the spheroidal bodies 12 moved in the outer circumferential direction of the disk with energizing force of the spring 9. Then, when the disk 3 is dismounted, the disk retaining part regulating member 2 is lightly pressed down so that the spheroidal bodies 12 are pressed by the claw 2a of the regulating member 2 to be moved to the side of an axial center, and the disk is taken out. 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 R structure suitable for portable CD players and the like.

[Prior Art] An example of a disc holding mechanism of a conventional optical disc player is shown in FIGS. 5 and 6.

FIG. 5 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 14 loosely fitted to the disc holder arm 4 is attached to a magnetic shaft 7 fixed to the upper part of the disc holder. 5, the disk 3 is pressed against the disk receiving portion 1 via the rubber 8, and the disk 3 is held.

On the other hand, FIG. 6 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 14 is pulled away against the attraction force of the magnet 5, and the disk 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 that has excellent functions and is suitable for making the mechanism of the disk holding mechanism smaller and thinner.

[Means for Solving the Problems] A disc holding mechanism for a disc player of the present invention has a disc holding structure that includes a disc receiving part and a disc pressing part that presses the disc against the disc receiving part.
The disk holding part is composed of a plurality of spheres guided by a disk holding part regulating member, and is biased by a spring so as to push the spheres outward from the inner diameter of the disk. The sphere is biased by a spring to move away from the disk, and is configured such that by pushing the disk holding portion regulating member, a claw provided on the disk holding portion regulating member pushes the sphere inward from the inner diameter of the disk. It is.

Further, in the disc holding mechanism of the disc player, a cylindrical body is used as a disc holding part instead of a sphere.

Furthermore, the spherical body and a spring that biases the spherical body are integrally formed.

[Function] According to the disc holding mechanism of the disc player of the present invention, when the disc is mounted on the disc receiver, when the disc itself is pushed lightly, the sphere or cylinder escapes inward, so that the disc does not hold the sphere or cylinder. After the disk has passed, the spherical or cylindrical body is moved toward the outer circumference of the disk by the biasing force of the spring to press and hold the disk against the disk receiving portion.

Further, when removing the disk, when the disk holding portion regulating member is lightly pushed down, the sphere or cylinder is pushed by the claw provided on the disk holding portion regulating member and moves toward the axis, making it possible to take out the disk.

[Embodiment] An embodiment of a disc holding mechanism in a disc player of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 is a plan view showing the disk holding state in the first embodiment of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a sectional view showing the disc open state, and FIG. FIG.

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 held together with the sphere 12.

Parts of a plurality of leaf springs 9 are fixed to the wall surface of the circular groove provided in the center of the upper part of the disc receiving part 1, and a part of the leaf springs 9 is fixed to the part corresponding to the upper part of the leaf springs 9 on the lower surface of the disc holding part regulating member 2. The same number of claws 2a as 9 are provided.

A sphere 12 is loosely fitted between the pawl 2a and the leaf spring 9 so as to be movable within a stopper 2b provided on the disk holding portion regulating member 2. Usually, as shown in FIG. The disk 3 is pushed out toward the outer circumference of the disk 3, and is held by the claws 2a of the disk holding portion regulating member 2 in a state slightly protruding toward the outer circumference of the disk from the inner diameter of the disk.

On the other hand, the disc holding part regulating member 2 is loosely fitted onto the upper part of the shaft 7 so as to be able to move up and down along the shaft 7, and is normally pushed upward by the repulsive force of the coil spring 10 in the groove of the disc receiving part 1. washer 11 fixed to the top of shaft 7
It stops at the position where it touches. 6 in the figure is a bearing of the shaft 7.

The state shown in FIG. 2 above shows the state in which the disk 3 is held, and the sphere 12 slightly protrudes toward the outer circumferential direction of the disk due to the action of the leaf spring 9 and presses the inner circumferential surface of the disk 3 with an appropriate force. 3 is pressed against the disc receiving part 1, and when the disc receiving part rotates, the disc 3 rotates together with the disc receiving part 1, and even if the player is turned upside down, the disc 3 will not fall out.

Next, the case of taking out the disk 3 will be explained with reference to FIG.

When the disk holding portion regulating member 2 in the state shown in FIG. If the disk holding part 2 is continued to be pushed until the disk is pushed further inside, the disk 3 can be taken out.

In addition, when installing the disk 3, if the disk 3 is pushed in from above without the disk 3 shown in FIG. 12 and is placed on the upper surface of the disk receiving portion 1.

In this state, the sphere 12 is moved to the second position by the repulsive force of the leaf spring 9.
The state shown in the figure is restored, and the disk 3 is securely held.

As for the two-dimensional arrangement of the sphere 12 and the leaf spring 9, as shown in FIG. 1, if three are arranged at equal intervals, the R function can be sufficiently exhibited, but even if three or more are arranged, the object of the present invention will not be achieved. can be achieved.

Further, the sphere 12 may be replaced with a cylindrical body, and the material of the sphere may be selected from metal or resin.

FIG. 4 shows a disc holding structure of a disc player according to a second embodiment of the present invention.

In this embodiment, the sphere 12 and the leaf spring 9 in the first embodiment are integrally formed into a ball t*13 having a leaf spring,
The end of the leaf spring is fixed to the wall surface of a circular groove provided in the disk receiving part 1.

With such a configuration, the sphere does not separate from the leaf spring, so there is no need to provide a hole to guide the sphere in the disc receiving portion regulating member 2, and even if the claw 2a is slightly worn, the sphere 12 will not move in the outer circumferential direction. This prevents it from flying out.

[Effects of the Invention] According to the disc holding mechanism of the disc player of the present invention, since a magnet is not used to hold the disc as in the conventional system, materials for the constituent members can be freely selected, contributing to a reduction in the weight of the player. I can do it.

In addition, there is no need to arrange a movable member such as a disc holding arm above the disc, and the height of the holding mechanism is 1 as shown in Figure 2 when the disc is held, and 1 as shown in Figure 3 when the disc is released. Since it is much shorter than the conventional one, the holding mechanism can be made smaller and the player can be made much thinner and lighter.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a disc holding state in a disc holding mechanism of a disc player according to a first embodiment of the present invention, FIG. 2 is a sectional view showing a disc holding state in a disc holding mechanism of the same disc player, and FIG. 3 is a sectional view showing the disc release state in the disc holding R structure of the same disc player, FIG. 4 is a sectional view showing the disc holding mechanism of the disc player according to the second embodiment of the invention, and FIGS. FIG. 6 is a sectional view showing a disc holding state and a disc releasing state in a disc holding mechanism of a conventional disc player, respectively. DESCRIPTION OF SYMBOLS 1... Disc receiving part, 2... Disc receiving part regulating member, 3... Disc, 4-way disc holding arm, 5
... Magnet, 6... Bearing, 7... Shaft, 8...
・Rubber, 9...Plate spring, 10...Coil spring, 11
... washer, 12 ... sphere, 13 ... sphere having a leaf spring, 1 4 ... disc holder.

Claims (1)

[Claims] 1. In a disc holding mechanism consisting of a disc receiving part and a disc holding part that presses the disc against the disc receiving part, the disc holding part is composed of a plurality of spheres guided by a disc holding part regulating member. The sphere is urged by a spring so as to be pushed outward from the inner diameter of the disc, and the disc holding part regulating member is urged by a spring to move away from the disc receiving part, and the disc holding part regulating member is urged by a spring to move away from the disc receiving part. A disc holding mechanism for a disc player, wherein a claw provided on the disc holding portion regulating member pushes the sphere inward from an inner diameter of the disc by pushing the disc. 2. The disc holding mechanism for a disc player according to claim 1, wherein a cylindrical body is used as the disc holding part instead of the sphere. 3. The disc holding mechanism for a disc player according to claim 1, wherein the spherical body and a spring for biasing the spherical body are integrally formed.