JPH0380441A - Optical pickup cleaner - Google Patents

Abstract

PURPOSE:To surely remove dust stuck to an objective lens by forming an almost spherical fiber member to be rotated by the output of a rotation axis converting mechanism of a turn table stored in a case inserted into an optical disk device so as to be ejected. CONSTITUTION:If the turn table 14 is rotated when the case 18 is inserted into the optical disk device, the rotating motion is decelerated and transmitted through plane gears 44, 46, 50, 52. A pinch roll 56 is abutted upon the bottom of the plane gear 52 to rotate a shaft 58. Since a fiber member is fixed to the shaft 58, dust stuck to the lens face can be easily and surely removed by abutting the outer peripheral part of the shaft 58 upon the objective lens 12 of an optical pick up 10. When pressurized air is fed from a tube 66 and blown to the periphery of the lens 12, the dust can be more surely removed. After completing cleaning, the table 14 is stopped and the case 18 is ejected.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an optical pickup cleaner that cleans an objective lens of an optical pickup while being installed in an optical disc device.

(Prior Art) Conventionally, as a method for cleaning the objective lens of an optical pickup in an optical disc device whose information reading method is an optical pickup method, the cover of the optical disc device is removed and a cotton swab or silvon paper impregnated with a solvent is used. There is a method for wiping the objective lens. The task of wiping the objective lens is done manually.

(Problem to be solved by the invention) However, cleaning the objective lens of conventional optical pickups is a manual process, which takes time and effort, and also causes damage to the objective lens by mistake with cotton swabs, etc. There is a risk of damaging the mechanism.

(Means for Solving the Problems) The present invention provides an optical pickup that faces the surface of a disk rotated by the rotational movement of a turntable in an optical disk device whose information reading method is an optical pickup method. An optical pickup cleaner for cleaning an objective lens surface of an optical pickup, the cleaner comprising: a case that is removably inserted into the optical disc device; A rotary axis conversion R structure that converts rotational motion into rotational motion around an axis orthogonal to the rotational axis and outputs the rotational movement, and a rotational axis conversion mechanism that receives the rotational movement output from the rotational axis conversion mechanism and converts it into rotational movement around the rotational axis of the rotational movement. and a substantially spherical fiber member that is rotated by the lens, and the fiber member is in contact with the objective lens surface.

Preferably, a tube is provided for guiding gas to be blown toward the objective lens.

(Function) When the case is inserted into the disk device, the fiber member comes into contact with the objective lens, and the rotational axis conversion mechanism receives the rotational movement of the turntable and converts the rotational movement into the rotational axis of the turntable. Since the fiber member is rotated by the rotational movement output from the rotation axis conversion mechanism, the dust adhering to the objective lens surface is removed by the fiber member.

Further, by providing the tube, gas can be blown through the tube, so that dust attached to the objective lens can be removed more reliably.

<Embodiment> FIG. 1 is a diagram showing an embodiment of the optical pickup cleaner of the present invention inserted into the optical disk device, FIG. 2 is a perspective view showing the optical pickup cleaner of FIG. 1, and FIG. 2 is a longitudinal sectional view of the optical pickup cleaner shown in FIG. 1. FIG.

As shown in FIGS. 1 to 3, an optical disk device whose information reading method uses an optical pickup method includes an optical pickup 10. The optical pickup 10 focuses a laser beam into a minute direct beam and directs it onto the disk surface. Read information recorded in. The laser beam is focused into direct light by an objective lens 12 located at a position facing the disk surface.

The disk is rotated by the rotational movement of the turntable 14.

The surface of the objective lens 12 facing the disk surface is cleaned by an optical pickup cleaner 16. The optical pickup cleaner 16 includes a case 18 that is removably inserted into the optical disc device. Case 1
Reference numeral 8 denotes a bottom portion 20 having a rectangular planar shape, four elongated plate-shaped side portions 22, 24, 26. , 24, 26, and 28 to define an internal space.

In the center of the bottom part 20, there is a circular hole 3 penetrating in the thickness direction.
2 is provided, and a hole 34 passing through in the thickness direction is provided near one edge of the bottom portion 20 along the width direction. The side portion 26 has a hole 36 penetrating through its thickness.
is provided, and the hole 36 is located adjacent to the side portion 24.

The case 18 houses a rotational axis conversion mechanism 38 that receives the rotational movement of the turntable 14, converts the rotational movement of the turntable 14 into rotational movement around an axis perpendicular to the rotational axis, and outputs the rotational movement. .

The rotational axis conversion mechanism 38 has a shaft 40 whose one end is rotatably attached to the lid 30 and whose axis coincides with the axis of the hole 32 . A hub 42 is fixed to the shaft 40, passing through the hole 32 and being engaged with the turntable 14. axis 4
A spur gear 44 is fixed to a portion between one end of the hub 42 and the hub 42 .

A spur gear 46 having a greater number of teeth than the spur gear 44 is meshed with the spur gear 44 . Spur gear 46 is fixed to shaft 48 . The shaft 48 has one end rotatably supported by the bottom 20 , the other end rotatably supported by the lid 30 , and extends perpendicularly to the bottom 20 . A spur gear 50 having fewer teeth than the spur gear 46 is fixed to a portion between one end of the shaft 48 and the spur gear 46 .

A spur gear 52 having a greater number of teeth than the spur gear 50 is meshed with the spur gear 50 . Spur gear 52 is fixed to shaft 54. Axis 54 extends perpendicular to bottom 20;
It is rotatably attached to the case 18. Spur gear 5
A pinch roller 56 is in contact with the surface of the roller 2 facing the bottom 20.

The pinch roller 56 has four shafts 58 fixed to a shaft 58.
extends along the length of the bottom 20 and is located above the hole 34. Both ends of the shaft 58 are rotatably supported by a support member 60 fixed to the bottom 20.

A disk 62 is fixed to the rotating shaft 58, and a fiber member 64 is bonded to the outer peripheral surface of the disk 62. Fiber member 64
It is made of cotton and has a ring shape. The outer dimensions of the fiber member 64 are determined such that a portion of the fiber member 64 protrudes outward through the hole 34 and its outer peripheral surface abuts the surface of the objective lens 12 facing the disk surface. Further, the fiber member 64 can be impregnated with a solvent in advance.

A tube 66 for guiding gas is housed within the case 18. One end of the tube 66 is formed into a nozzle shape, and the gas flows through the hole 3.
2 and around the outwardly projecting portion of the fiber member 64, the fl! 1
The end projects through the hole 36. Tube 66 is retained by a pair of fixtures 68 attached to bottom 20.

When the turntable 14 is rotated, the hub 42 receives the rotational movement of the turntable 14 and is rotated about the axis 40, thereby causing the spur gear 44 to rotate. The rotational motion of the spur gear 44 is reduced in speed and transmitted to the spur gear 52 by the spur gear 46 and the spur gear 50, and the rotational speed of the spur gear 52 is smaller than the rotational speed of the spur gear 44.

The rotational movement of the spur gear 52 about the axis 54 is converted into rotational movement of the pinch roller 56 about the axis 58 by the pinch roller 56 being brought into contact with the surface facing the bottom of the spur gear 52 . Since the fiber member 64 is fixed to the shaft 58, the fiber member 411i is rotated around the shaft 58, that is, around an axis perpendicular to the rotation axis of the turntable 14, and the outer peripheral surface of the fiber member 64 is rotated. is objective lens 1
2, the opposing surface of the disk of the objective lens 12 is in contact with the fiber member 6.
Wiped off by 4. As a result, dust adhering to the objective lens 12 is easily removed.

When the female member 64 is being rotated, pressurized air is sent from the other end of the tube 66, so that the pressurized air is directed around the outwardly protruding portion of the fiber member 64 from one end of the tube 66, that is, the objective lens. Since the dust is blown toward the circumference of the object lens 12, dust adhering to the surface of the objective lens facing the disk is more reliably removed.

When cleaning of the objective lens 12 is completed, the rotation of the turntable 14 is stopped and the case 18 is taken out from the hand disk device.

(Effects of the Invention) According to the present invention, when the case is inserted into the optical disc device, the fiber member is rotated by the rotational axis conversion mechanism that receives the rotational movement of the table as input, and By coming into contact with the objective lens surface, the dust adhering to the objective lens surface is removed by the fiber member, so that cleaning work does not take much time and does not damage the objective lens or internal mechanism. There is no fear.

Furthermore, by providing the tube, gas can be blown through the tube, so that dust adhering to the objective lens surface can be removed more reliably.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the optical pickup cleaner of the present invention inserted into an optical disk device, FIG. 2 is a perspective view of the optical pickup cleaner of FIG. 1, and FIG.
FIG. 3 is a vertical cross-sectional view of the optical pickup cleaner shown in the figure. 10... Optical pickup, 12... Objective lens, 1
4... Turntable, 16... Optical pickup cleaner, 18... Case, 38... Rotation axis conversion mechanism, 64... Textile member, 66... Tube.

Claims (2)

[Claims] (1) An optical pickup cleaner that cleans the objective lens surface of an optical pickup that faces the surface of a disk rotated by the rotational movement of a turntable in an optical disk device whose information reading method is an optical pickup method. , a case that is removably inserted into the optical disc device, and a case that is housed in the case and receives rotational movement of the turntable and that rotates the rotational movement of the turntable around an axis perpendicular to the rotational axis of the turntable. A rotational axis conversion mechanism that converts the rotational movement into rotational movement and outputs the rotational movement, and a substantially spherical fiber member that receives the rotational movement output from the rotational axis conversion mechanism and rotates around the rotational axis of the rotational movement, An optical pickup cleaner in which the fiber member is in contact with the objective lens surface. (2) The optical pickup cleaner according to claim 1, further comprising a tube that guides gas blown toward the objective lens.