JPH0341353Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a method for removing dirt from the recording surface of an optical recording disk, which is a disc-shaped recording medium used in an optical recording and reproducing device using a laser beam. The present invention relates to a cleaning device.

BACKGROUND TECHNOLOGY AND PROBLEMS Today, there are discs called compact discs or laser discs in which signals are recorded using a laser beam.

When reproducing signals from this optical recording disk with an optical recording/reproducing device, first clean the dirt on the recording surface of the optical recording disk to prevent signal errors due to dirt on the recording surface of the optical recording disk. There is a need to.

For this reason, dirt on the recording surface of the optical recording disk is cleaned, but if scratches or dirt remain on the recording surface, such as streaks concentric with the recording tracks of the optical recording disk, the signal may become long. There is a high possibility that data may be missing or errors may occur over time, making it impossible to reproduce the data.

Conventionally, the wiping surface of the cleaner is brought into contact with the recording surface of the optical recording disk and moved in the radial direction to wipe away the dirt. Even if streak-like scratches or stains remain on the disk due to foreign matter, etc., it is ensured that the scratches are in the radial direction that intersects the recording tracks of the optical recording disk, and the intervals between signal errors on the recording tracks are was short, and signal errors could be corrected using a correction circuit built into the optical recording/reproducing device.

However, this cleaning operation requires moving the cleaner while changing its direction sequentially in the radial direction of the optical recording disk, which is a tedious task and has the disadvantage that it is difficult to perform this task simply and uniformly. It was hot.

Purpose of the Invention The purpose of the optical recording disk cleaning device of the present invention is to enable easy and even cleaning of the recording surface of the disk.

Summary of the invention The optical recording disk cleaning device of the present invention consists of a disk holding stand and a cleaner. The cleaner consists of a handle, a cleaner body that can rotate around the handle and is large enough to be accommodated within the rolling contact part, and a rolling contact part provided on the outer periphery of the cleaner body. The recording surface of the optical recording disk can be easily and evenly cleaned without leaving concentric scratches or stains along the recording track.

Embodiment Hereinafter, an embodiment of the optical recording disk cleaning device of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 is an exploded perspective view of the cleaning device of this example, in which 1 is a disk holding stand, 2 is a cleaner, and 3 is an exploded perspective view of the cleaning device of this example.
is an optical recording disk.

This optical recording disk 3 is a hollow disc-shaped disk having a circular opening 4 in the center, and a recording track 5 is provided on the upper surface thereof over a predetermined width h.

To clean the optical recording disk 3 constructed in this manner, the optical recording disk 3 is placed on the disk holding stand 1, and the recording surface of the recording track 5 is cleaned by the cleaner 2.

For this reason, as shown in FIG. 3, a circular recess 6 on which the optical recording disk 3 is placed is provided on the upper surface of the disk holder 1.

At the bottom of this circular recess 6 is an optical recording disk 3.
A donut-shaped groove 6a having the same depth as the thickness of the disk is provided in order to fit and support the disk.

That is, the optical recording disk 3 is fitted into the groove 6a in the circular recess 6 so as to be aligned with each other, and is supported by the circular support 7 having the same height as the thickness of the disk fitted into the circular opening 4. Along with
The optical recording disk 3 is configured so that its outer circumference is supported by the outer circumference of the groove 6a.

Further, a rolling contact portion 8 for internally rotating the cleaner 2 is provided on the circumferential side of the circular recess 6. The rolling contact portion 8 has an inverted triangular cross section and the entire circumference of the hypotenuse is made of a rubber material so that the cleaner 2 can be easily rotated inwards by friction.

As shown in FIG. 2, the cleaner 2 used in the cleaning device of this example mainly includes a cleaner body 9 which is an integral combination of an adductor body part 10 and a wiping part 11, and a handle part 12. Consists of. The adducting body portion 10 is formed into a substantially disk shape, and rotates inwardly along the circumference of the rolling contact portion 8 in the disk holding base 1. An adducting tangent part 13 having the same inclination angle is formed so as to be in contact with the oblique side of the .

Note that a rubber material may be disposed on the adduction contact portion 13 to increase the frictional resistance with the rotation contact portion 8, which is also formed of a rubber material.

Furthermore, contrary to this example, it is of course possible to arrange the adduction contact portion 13 with a rubber material and to configure the rotation contact portion 8 not with a rubber material. In addition, this transition part 8
However, means may be used to allow the adduction contact portion 13 to respond without slipping. For example, a tooth profile is formed on the rotation contact portion 8, and a tooth profile that meshes with this tooth profile is formed on the adduction contact portion 13. It may also be configured like an internal gear.

Further, a substantially disc-shaped wiping part 11 as shown in the figure is provided so as to be combined with the lower part of the adductor body part 10.

Wiping surface 11a on the bottom of this wiping part 11
is made of a material that is convenient for removing dirt and does not easily damage the surface of the optical recording disk 3, in this example chamois leather.

Further, a circular relief recess 14 having a predetermined diameter is formed in the center of this wiping surface 11a.

This is because the diameter of the adductor body portion 10 of the cleaner 2 is small, and its center point is located at the adductor contact portion 13 of the adductor body portion 8.
This is to prevent the center point from coming into contact with the surface of the recording track 5 when it is located on the recording track 5 in a state in which it is in contact with the recording track 5.

Note that the diameter of the adduction body portion 10 of this cleaner 2 is made sufficiently large, and its center point is located at the innermost position of the recording track 5 when the adduction contact portion 13 is in contact with the rotation contact portion 8. When configured to be located closer to the center, the wiping surface 11a of the wiping portion 11 may be formed into a uniform plane.

In addition, shaft holes 15 and 16 having the same inner diameter are bored in the central parts of the adductor body part 10 and the wiping part 11, respectively, and the wiping part 1
1 and fixed together, the shaft rod portion 17a of the flanged shaft portion 17 is inserted into the shaft from below.

Then, the e-pin 18 is fitted to the upwardly protruding portion of the adductor body part 10 of the shaft rod part 17a, and the adductor body part 10 and the wiping part 11 are connected to the flanged shaft part 17.
It is rotatably mounted between the flange 17b and the e-pin 18.

Further, the shaft rod portion 17a of this flanged shaft portion 17
The handle part 12 with a boring recess 19 bored in the upper part is fitted onto the E-pin 18, a holding plate 20 with a through hole is placed, and a screw is inserted into the screw hole bored in the shaft part 17a. 21 is screwed in and fixed.

Next, the usage, operation, and effects of this example device configured as described above will be explained.

In the cleaning device of this example, as shown in FIG. 3, an optical recording disk 3 is placed on a disk holding stand 1, and the wiping surface 11a of the cleaner 2 is placed on the surface of the recording track 5.

Then, the user holds the handle part 12 and rotates the cleaner 2 in a circular motion while lightly pressing the adduction contact part 13 of the cleaner 2 against the rotation contact part 8.

Then, the adductor body portion 10 is integrated with the wiping portion 11 and internally rotates along the rolling contact portion 8 . That is, the wiping surface 11a of the cleaner is
This handle part 1 moves while making a revolution similar to 2.
Rotating around the flanged shaft portion 17 of No. 2,
The surface of the recording track 5 of the optical recording disk 3 is wiped.

By doing this, a point A on the outer circumference of the wiping surface 11a of the cleaner moves on an adduction cycloid (hypocycloid) curve exemplified by the dashed line a in FIG. Movement of the disk 3 along each concentric recording track 5 can be avoided. Furthermore, wiping surface 1
A point B in the middle of 1a moves as shown by a two-dot chain line b in FIG. 3, and a point C on the inner circumference of the wiping surface 11a moves as shown by a three-dot chain line c in FIG. Therefore, even in these cases, movement along the concentric recording tracks 5 can be avoided.

As mentioned above, even if the diameter of the cleaner 2 is made sufficiently large and the center point thereof is located on the inner center side of the recording track 5, the concentric movement locus of this center point with respect to the disk will be the same as that of the recording track. There is no problem as it is off to the inside of 5.

Therefore, there is no risk of leaving concentric scratches or stains along the recording track 5 of the optical recording disk during cleaning.

Further, the recording surface of the optical recording disk can be cleaned evenly by moving the cleaner evenly.

Effects of the Invention As described in detail above, the optical disk cleaning device of the present invention can remove dirt from the recording surface of the optical disk without leaving concentric scratches or dirt along the recording track. It has the effect of cleaning without any problems.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the optical recording disk cleaning device of the present invention, FIG. 2 is a vertical cross-sectional view of the cleaner, FIG. 3 is a partially sectional side view of the disk holder, and FIG. 4 is an explanatory diagram of the movement locus of the wiping surface of the cleaner. 1 is a disk holding base, 2 is a cleaner, 8 is a rolling contact portion, 10 is an adduction body portion, 11 is a wiping portion, 12 is a handle portion, and 13 is an adduction contact portion.

Claims (1)

[Scope of utility model registration request] It consists of a disk holding stand and a cleaner, the disk holding stand has an annular rolling contact part formed around the mounting part of the optical recording disk, and the cleaner has a handle and a ring around the handle. a cleaner body that is rotatable and formed in a size that can be accommodated in the rolling contact portion with ample room; and an adduction contact portion that rolls into contact with the rolling contact portion provided on the outer periphery of the cleaner body. An optical recording disk cleaning device characterized by the following.