JPH07201061A - Optical pickup lens cleaner - Google Patents

Abstract

PURPOSE:To clean by sweeping off foreign matter attached on the objective lens surface of an optical pickup which performs recording or readout to the optical disk of an optical recording medium housed in a casing. CONSTITUTION:A sweep-off part 2 is housed and arranged in the casing 10 of the optical disk 1 in which the optical recording medium 13 is housed in the casing 10. The sweep-off part 2 is housed in a collapsing state in the casing 10 when a shutter part 12 closes the aperture part 11 of the optical disk 1, and an erecting state is set interlocking with the releasing operation of the shutter part 12, and it is protruded over the aperture part 11 on the traveling path 30 of the optical pickup 3 which performs the recording/readout to the optical disk 1. In this way, the objective lens surface of an optical disk player setting the optical disk housed in the casing 10 as a target can be cleaned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup lens cleaner for cleaning an objective lens of an optical pickup,
In particular, the present invention relates to an optical pickup lens cleaner for wiping off foreign matter adhering to the surface of an objective lens of an optical pickup for recording or reading information on an optical recording medium housed in a casing.

[0002]

2. Description of the Related Art Conventionally, a compact disc (CD, hereinafter the same) is used as a CD for this type of lens cleaner.
Regarding the player, there is one shown in FIG. 8 disclosed in Japanese Patent Laid-Open No. 63-798. FIG. 6 is a plan view of a conventional lens cleaner.

In the figure, the conventional lens cleaner is C
In the lead-in area 101 of D100 and the outer peripheral area, a pair of brush bristle bundles 10 are arranged line-symmetrically in the radial direction.
2, 103 are planted. This brush bunch 10
Reference numerals 2 and 103 are predetermined lateral widths continuous in the radial direction of the CD 100, and are formed by implanting brush bristles in a width narrower than the predetermined lateral width in the tangential direction. In the case of this conventional technique, the brush bristle bundle 10 has a predetermined lateral width continuous in the radial direction and is line symmetrical.
Since Nos. 2 and 103 are formed, the width in contact with the objective lens of the optical pickup becomes wider, and the cleaning effect is improved.

[0004]

Since the conventional lens cleaner is constructed as described above, in the optical disc player for recording or reading the optical disc of the optical recording medium housed in the casing, the optical pickup of the optical pickup is used. There is a problem that the surface of the objective lens cannot be cleaned. That is, since the conventional lens cleaner is formed by directly implanting the bristles of hair bristles 102 and 103 on the optical recording medium itself, the bristles of bristles 102 and 103 come into contact with the casing that covers the optical recording medium, so The recording medium cannot be rotated and the cleaning operation becomes impossible.

The present invention has been made to solve the above-mentioned problems, and wipes off foreign matter adhering to the surface of the objective lens of an optical pickup for recording on or reading from an optical disk of an optical recording medium housed in a casing. It is an object of the present invention to provide an optical pickup lens cleaner that is cleaned by cleaning.

[0006]

In an optical pickup lens cleaner according to the present invention, an optical recording medium is housed in a casing having an opening shutter portion, and the light emitted from the optical pickup is output by opening the opening shutter portion. An optical disc for recording or reading information on an optical recording medium by projecting it onto a recording medium, and when the opening shutter portion of the optical disc is in a closed state, it is housed in a casing in a collapsed state to open the opening shutter portion. It is provided with a wiping unit which is interlocked to stand up and protrudes from the opening shutter unit onto the recording or reading path of the optical pickup.

Further, according to the present invention, the wiping portion is
A supporting rod arranged so as to intersect with the recording or reading path of the optical pickup, a brush body arranged laterally in the longitudinal direction of the supporting rod, and arranged on an extension line of the central axis of the supporting rod, An inclined shutter having an inclined wall surface and a sliding contact portion fixed to one end of the supporting rod facing the inclined receiving portion and having an inclined end surface are formed. The other end of the supporting rod has an opening shutter. When the sliding contact portion is pressed in conjunction with the opening operation, the slanted end surface of the sliding contact portion rotates while slidingly contacting the slanted wall surface of the slanted receiving portion, and the supporting rod is swung along with this swiveling to rotate the brush. The body is in a standing state.

[0008]

According to the present invention, the wiping portion is housed and disposed in the casing of the optical disk having the optical recording medium housed therein, and the wiping portion falls down inside the casing when the opening shutter portion of the optical disk is closed. It is housed in the casing because it is placed in a standing state in conjunction with the opening operation of the opening shutter part and protrudes from the opening shutter part on the moving path of the optical pickup that performs recording or reading on the optical disc. It is possible to clean the surface of the objective lens of the optical disk player for the optical disk.

Further, according to the present invention, the support rod on which the brush body is disposed is changed by the engagement state between the inclined receiving portion and the sliding contact portion.
Since the brush body is made to perform the upright / falling motion, it can be reliably interlocked with the opening operation of the opening shutter portion to project onto the moving path of the optical pickup, and the surface of the objective lens of the optical disk player can be reliably cleaned. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a plan view of the optical pickup lens cleaner according to the present embodiment, FIG. 2 is a detailed perspective view of the wiping portion in the present embodiment, and FIG. 3 is an operation explanatory view of the bristles of brushes in FIG.

In each of the drawings, an optical pickup lens cleaner according to the present embodiment is an optical disc 1 formed by housing an optical recording medium 13 in a casing 10 having an opening 11 for reading information, and the optical disc 1 of this optical disc 1. When the shutter portion 12 closes the opening portion 11 and is housed in the cage 10 in a fallen state, the shutter portion 12 is erected in association with the opening operation of the shutter portion 12 on the reading path 30 of the optical pickup 3 from the opening portion 11. And a wiping portion 2 that is locked in the casing 10 so as to project inward. The wiping unit 2 has a lever 21 which rotates around a boss 21a by a predetermined angle in accordance with an opening movement of the shutter unit 12, a support rod 24 which linearly reciprocates and rotates by the rotation of the lever 21, and a support rod thereof. 24, and a brush bristle bundle 25 fixed to the side of the longitudinal direction in a brush shape.

The support rod 24 is connected to one end side so that the end portion abuts on the working arm 21c of the lever 21.
The engaging portion 22 into which the spiral end of the spiral spring 23 is inserted in the through hole 22a in the central side portion, and one end is fixed to the other side of the engaging portion 22 in a penetrating state, and the end face is formed in an inclined shape. The contact portion 26 having the contact surface 26a is provided. On the extension line of the support rod 24, the inclined receiving portion 28 is provided with the casing 1
The inclined receiving portion 28 has a guide hole 28a penetrating the support rod 24, and the inclined receiving portion 28 is formed in an inclined shape with respect to the penetrating direction of the guide hole 28a.
8b.

As shown in FIG. 4A, the brush bristle bundle 25 is bent into a U-shape on the support rod 24 and has a diameter of, for example, 0.
About 1 mm to 0.5 mm Nylon, flexible synthetic resin such as polyethylene, or animal hair having liquid absorbency such as pig hair is suspended and fixed with an adhesive or heated. It is also possible to weld by. In addition to the adhesive, the brush bristle bundle 25 has a U-shaped stopper 25a in which a U-shaped stopper 25a is bent in a U-shape or a linear hair is attached, as shown in FIG. 4B. You can also

Further, as shown in FIG. 4 (C), the support rod 24
It is also possible to directly implant the bristles 25 of brush. Further, as the brush bristle bundle 25, various things such as a foam material, a coagulant material, a filamentous material, and a cloth-like material capable of wiping off foreign matters adhering to the surface of the objective lens can be used in addition to the hair-like material. It is selected in consideration of the dust collecting property by the fine uneven friction on the surface, the moisturizing property of the cleaning liquid, the abrasion resistance and the like.
Also, a sheet-shaped wiping body may be used in place of the bristles 25 of brushes, and not only one side of the support rod 24 but also both sides of the support rod 24 should be symmetrically projected to enable cleaning of both upper and lower sides. Is also possible.

Next, the cleaning operation of this embodiment based on the above construction will be described. First, the optical disc 1 is mounted in the optical disc player in the direction of arrow A in the figure. When mounting the optical disk 1, the casing 1 of the optical disk 1
Shutter part 12 for closing the opening 11 formed in 0
Is moved in the direction of arrow B in the figure, the shutter unit 12
The engaging piece 12a of the above pushes the force application arm 21b of the lever 21. By this pressing, the force application arm 21b rotates in the direction of the arrow C in the drawing around the boss 21a, and the action arm 21c rotates in the direction of the arrow D in the drawing in accordance with this rotation.

By the rotation of the action arm 21c, the engaging portion 22 which is constantly urged in the arrow F direction by the helical winding 23 is linearly moved in the arrow E direction. The support rod 24 also moves linearly in the direction of arrow E by the linear movement of the engaging portion 22. The support rod 24 is inserted into the guide hole 28a of the inclined receiving portion 28, and its linear movement is restricted in a predetermined direction. Along with this linear movement, the contact surface 26a of the sliding contact portion 26 rotates in the direction of the arrow G in the drawing while sliding in contact with the receiving surface 28b of the inclined receiving portion 28 (see FIG. 3A). 3 (see FIG. 3B)), and further by rotating in the direction of arrow G by the linear movement, the contact surface 26a and the receiving surface 28b are brought into a close engagement state. By rotating the support rod 24 in the direction of arrow G, the brush bristle bundle 25 fixed to the support rod 24 is rotated in the direction of arrow H in the drawing so as to stand on the reading path 30 of the optical pickup 3. This brush bunch 2
When 5 is in the upright state, the contact surface 26a and the receiving surface 28b are in close engagement with each other, and the opening 11 of the casing 10 is in a state where the shutter portion 12 has completed opening.

After such a bristles 25 of brushes are erected on the read-out path 30 of the optical pickup 3, the optical pickup 3 moves on the read-out path 30 in the direction of the arrow I in the figure, with respect to the optical recording medium 13. Information is read out by projecting light. During this information reading operation, the objective lens 31 of the optical pickup 3 comes into contact with the bristles 25 of brushes, and foreign matter such as dust on the objective lens 31 is removed by this contact. If the inclination direction of the contact surface 26a and the receiving surface 28b is set to face downward in FIG. 3, even if a strong force is applied to the brush bristle bundle 25, this force is received by the inclined surface and the sliding contact portion 26 is It never rises.

After the cleaning operation is completed, the optical disc 1 is ejected from the optical disc player in the direction of arrow J in the figure. By ejecting the optical disc 1, the shutter portion 12 returns to the position where it closes the opening portion 11 and the engaging piece 12
The engagement of a with the lever 21 is released. This lever 2
When the engagement with 1 is released, the support rod 24 is pulled back by the restoring force of the spiral winding strip 23, and with this pullback, the support rod 24 is rotated in the direction opposite to the arrow G direction. This reverse G
By the rotation in the direction, the brush bristle bundle 25 also rotates in the direction opposite to the direction of the arrow H in the drawing, and is housed in the casing 11 in a lying state. In the above embodiment, the opening and closing operation of the shutter portion 11 of the casing 10 is performed by the lever 21, the support rod 24, the engaging portion 23, the sliding contact portion 26, and the inclined receiving portion 28 in cooperation with each other to raise the brush bristle bundle 25. The shutter portion 11 in the casing 10
Alternatively, the bristles 25 may be directly raised from the opening / closing operation.

A specific example of this is shown in FIG. 6, in which another embodiment has an engaging groove portion 24'a formed of a spiral recess having a predetermined length and formed on the side surface of a supporting rod 24 '. The sliding contact projection 12b, which is slidably fitted into the concave portion of the engaging groove 24'a, is formed on the inner surface side of the shutter portion 12. Based on this configuration, in the apparatus of the other embodiment, when the shutter portion 12 moves in the direction of the arrow B in the drawing, the sliding contact projection 12b of the shutter portion 12 moves while slidingly contacting the engaging groove portion 24a, and the support rod 24 'is moved. Rotate in the direction of arrow G shown. Along with this rotation, the brush bristle bundle 25 'is rotated in the direction of the arrow G to be in a standing state on the reading path 30 of the optical pickup 3. As described above, since the linear movement of the shutter portion 12 in the B direction can be directly converted into the rotational movement of the support rod 24 'in the G direction, the device configuration can be simplified.

In each of the above-described embodiments, when the opening 11 is closed by the shutter 12, the brush filaments 23 are laid down in the casing 10 so that the brush bristle bundles 25 fall inside the casing 10. Although it is configured to always urge the support rod 24 in the direction shown in FIG.
Alternatively, the engaging portion 23 may be formed of a spring-shaped elastic body that makes the outer periphery of the engaging portion 23 in a wound state. A schematic perspective view of this configuration is shown in FIG. 7. In the figure, in order to rotate the support rod 24 "by the pressing force of the spring 23" in this winding state in the spring axial direction, an arc-shaped sliding contact portion 26 "is provided on the peripheral surface of the support rod 24". The tilt receiving portion 28 "is provided upright on the casing 10 side. The sliding contact portion 26" is slidably fitted to the tilt receiving portion 28 ", and the sliding contact portion 26" is moved by the movement of the support rod 24 ". It is possible to rotate the support rod 24 ′ by being guided by the tilt receiving portion 28 ′.

Further, in each of the above-mentioned embodiments, the standing state of the bristles of bristle brushes 25 is set to the read path 30 of the optical pickup 3.
However, as shown in FIG. 5, the brush bristle bundle 25 is in the upright state and the reading path 30 is formed.
It can also be configured so as to be inclined with respect to and intersect. Since the bristles 25 are in contact with the objective lens 31 of the optical pickup 3 in order, the contact shock is minimized because the bristles 25 are inclined with respect to the readout path 30 by a predetermined angle θ. Can be suppressed.

The brush bristle bundle 25 as described above is provided with the support rod 2.
4 are arranged in parallel in a plurality of rows, and the type of the brush bristle 25, for example, a combination of the dry type wiping body and the wet type wiping body, or a combination of varying the length or softness of the wiping body, is used to perform the cleaning function. Can be increased. The shutter portion 12 opens and closes the opening portion 11. However, it is not necessary to have a size that completely covers the opening portion 11 in order to move the support rod 24, and the shutter portion 12 operates in conjunction with the shutter opening / closing mechanism on the player side. A driven size is sufficient.

In each of the above embodiments, the optical recording medium 13 was constructed as a read-only disc, but the optical recording medium 13 is constructed as a magneto-optical recording (including both optical modulation and magnetic field modulation) type disc, Further, a phase change type disk configuration, a two phase polymer type disk configuration, etc. can be adopted. In these cases, the objective lens 31 of the optical pickup 1 can be cleaned not only when reading information but also when recording information.

[0024]

As described above, in the present invention, the wiping portion is housed and disposed in the casing of the optical disk having the optical recording medium housed therein, and the wiping portion is in the closed state of the opening shutter portion of the optical disk. In this case, it is housed in the casing in a fallen state, and is brought into an upright state in conjunction with the opening operation of the opening shutter section so that it projects from the opening shutter section on the moving path of the optical pickup for recording or reading the optical disc. Therefore, it is possible to clean the surface of the objective lens of the optical disk player for the optical disk housed in the casing. Also,
In the present invention, the support rod provided with the brush body is caused to perform the standing and falling motions by the engagement state of the inclined receiving portion and the sliding contact portion, so that the opening shutter portion is opened. Since it can be surely interlocked with the operation to project onto the moving path of the optical pickup, the surface of the objective lens of the optical disk player can be reliably cleaned.

[Brief description of drawings]

FIG. 1 is a plan view of an optical pickup lens cleaner according to an embodiment of the present invention.

FIG. 2 is a detailed configuration perspective view of a wiping unit in the embodiment shown in FIG.

FIG. 3 is an operation explanatory view of the bristles of brush in the wiping unit shown in FIG.

FIG. 4 is a view showing various attachment modes of a brush bristle bundle in an optical pickup lens cleaner according to another embodiment of the present invention.

FIG. 5 is a view showing how the bristles of brush are attached in the optical pickup lens cleaner according to another embodiment of the present invention.

FIG. 6 is a detailed view of a main part of an optical pickup lens cleaner according to another embodiment of the present invention.

FIG. 7 is a detailed view of a main part of an optical pickup lens cleaner according to another embodiment of the present invention.

FIG. 8 is a plan view of a conventional lens cleaner.

[Explanation of symbols]

 1 Optical Disc 2 Wiping Part 3 Optical Pickup 10 Casing 11 Opening Part 12 Shutter Part 13 Optical Recording Medium 21 Lever 22 Engaging Part 23 Vine Winding Stroke 24 Supporting Rod 25 Brush Bundle 26 Sliding Contact Part 28 Inclined Receiving Part

Claims (2)

[Claims] 1. An optical recording medium is housed in a casing having an opening shutter portion, and light emitted from an optical pickup is projected onto the optical recording medium with the opening shutter portion opened to record information on the optical recording medium. Alternatively, when the optical disc to be read and the opening shutter portion of the optical disc are closed, the optical disc is stored in a fallen state in the casing, and the optical disc is raised from the opening shutter portion in association with the opening operation of the opening shutter portion. And a wiping portion protruding on the recording or reading path of the optical pickup lens cleaner. 2. The optical pickup lens cleaner according to claim 1, wherein the wiping portion is a supporting rod arranged so as to intersect with a recording or reading path of the optical pickup, and a longitudinal side of the supporting rod. A brush body disposed on one side, an inclined receiving portion disposed on the extension line of the central axis of the supporting rod, having an inclined wall surface, and fixed to one end facing the inclined receiving portion of the supporting rod,
When the other end of the support rod is pressed in conjunction with the opening operation of the opening shutter part, the slanted end face of the sliding contact part has a slidable contact part. An optical pickup lens cleaner characterized in that it is rotated while being in sliding contact with an inclined wall surface, and in accordance with this rotation, the support rod is rotated to bring the brush body to an upright state.