JPH0594632A - Lens cleaner - Google Patents

Abstract

PURPOSE:To prevent cleaning members from coming out of a disk even when the disk is rotated at high speed at the time of using the lens cleaner having a large number of cleaning members flocked in a dispersion pattern on the disk by shifting their positions from one another in the circumferential direction and also in the radial direction. CONSTITUTION:In a signal recording area 5 of the disk 1, a hole 6 is provided in a flocked point of each cleaning member 2. The cleaning member 2 consists of a bundle 10 of brush bristles and a chip 7 fixing this bundle. The inner circumferential side surface of the hole 6 and the outer circumferential side surface of the chip 7 are formed into a tapered shape to be engaged with each other, where the chip 7 is fitted into the hole 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens cleaner for cleaning a lens of, for example, a compact disc player (hereinafter referred to as a CD player) or a laser disc player.

[0002]

2. Description of the Related Art In this type of lens cleaner, a cleaning member is attached to the disc surface of the lens cleaner so that the lens on the player side is cleaned when the lens cleaner is loaded in the player. -13
It is known in Japanese Patent No. 6371, Japanese Utility Model Laid-Open No. 62-57931, and the like. The problem is how to attach the cleaning member to the disk surface. In this regard, in many conventional examples, cleaning members are concentrated on the disk surface in a limited place. Therefore, the player detects the cleaning member as an obstacle, and for example, when the pickup lens of the CD player performs the focusing operation while moving toward the disc, if the lens surface comes into contact with the cleaning member, the obstacle on the CD player side is avoided. The circuit of (3) was activated, the rotation of the disk stopped and it was not possible to perform cleaning.

Therefore, the inventor of the present invention has proposed a mode in which a cleaning member composed of a bristles of bristles in which extremely fine bristles are bundled on the disk surface is arranged in a dispersed manner while shifting the phase in the radial direction and the circumferential direction (Japanese Patent Application Laid-Open No. HEI 2-Japanese Patent Application Laid-Open No. Hei 2- No. 232878), which succeeded in solving the above problems. As shown in FIG. 9, there are provided several through holes 6 in the disk 1, and the root portions 10 of the brush bristle bundle 10 are provided in each of the holes 6.
a is inserted, the root portion 10a is pushed and bent toward the label surface 1b side of the disc 1, and the sticker 13 is used to attach the root portion 1a.
0a was covered.

[0004]

However, in the improved proposal for disposing the bristle tufts 10 in the disk 1 in a dispersed manner, it is necessary to insert the brush tufts 10 into the small-diameter holes 6 and fix the tufts in a retaining shape. It was very troublesome, and it had to be done manually, and its greatest drawback was that it was inferior in productivity. Further, defects such as tilt of the brush bristle bundles not properly planted upright with respect to the disc surface and variation in the protruding length of the brush bristle bundles 10 from the disc surface are recognized. I realized that it was the cause.

Therefore, an object of the present invention is to obtain a lens cleaner which improves the workability of assembling the brush bristle bundle to the disc when the brush bristle bundle is planted in the disc in a dispersed manner. Another object of the present invention is to obtain a lens cleaner capable of properly implanting a bristles of bristles at a predetermined position on the surface of a disk and further holding the bristles, thereby further improving cleaning performance.

[0006]

SUMMARY OF THE INVENTION According to the present invention, in a lens cleaner in which a cleaning member 2 is dispersedly planted in a disk 1, the cleaning member 2 bundles a large number of brush bristles 9. And a tip 7 for fixing the root portion 10a of the bristles 10 of brushes, the disk 1 is provided with a penetrating hole 6 at the implantation position of the cleaning member 2, and the tip 6 is tapered in the hole 6. It is required that the tips 7 of the cleaning members 2 be fitted in the holes 6 by fitting them.

The outer peripheral side surface of the tip 7 is formed into a tapered surface which is narrowed toward the tip end side of the bristles 10 of brush, and the inner peripheral side surface of the hole 6 is tapered toward the reading surface 1a side of the disk 1. Then, the chip 7 fitted to the hole 6 is fixed from the label surface 1b side of the disc 1 with the adhesive tape 15. Alternatively, the outer peripheral side surface of the tip 7 is formed as a tapered surface that widens toward the tip side of the brush bristle bundle 10, and the inner peripheral side surface of the hole 6 is formed as a tapered surface that widens toward the reading surface 1a side. When 7 is taper fitted,
An adhesive 22 is filled in a gap 21 formed between the chip 7 and the inner peripheral side surface of the hole 6 on the label surface 1b side to fix the chip 7 to the disk 1.

[0008]

The cleaning member 2 includes the tip 7 and the brush bunch 1
0 is integrated. This is the tip 7 and the brush bristle bundle 10
It can be integrated in advance by fixing the root part 10a of the above by suitable means. Since the outer peripheral side surface of the tip 7 and the inner peripheral side surface of the hole 6 are formed in a tapered shape that fits with each other, the chip 7 can be easily inserted into the hole 6 when the cleaning member 2 is implanted in the disk 1. Further, since the depth of insertion of the chips 7 into the holes 6 is regulated by the tapered surface, all the chips 7 can be easily inserted into the disk 1 and positioned easily.

When the disk 1 is loaded in the player so that the reading surface 1a of the disk 1 faces downward, and the hole 6 is recessed on the reading surface 1a side, the chip 7 is used during use.
Does not fall off to the reading surface 1a side. On the other hand, the adhesive tape 15 can regulate the chip 7 from coming off to the upper label surface 1b side. In addition, the hole 6 has the reading surface 1a.
In the form of spreading on the side, the chip 7 is the label surface 1b.
It does not come off to the side, and the gap 2 on the label surface 1b side
The adhesive 22 applied to the inside of the chip 1 causes the chip 7 to read the reading surface 1a.
It does not fall to the side.

[0010]

When implanting the cleaning member 2 on the disk 1, the tip 7 of each cleaning member 2 is inserted into each hole 6.
It is only necessary to insert the cleaning member 2 along the taper, so that the assembling work of the cleaning member 2 with respect to the disk 1 becomes easy, automatic assembling can be achieved, and productivity can be improved. Since the root 10a of the brush bristle bundle 10 is fixed to the tip 7 in advance and integrated, the length of protrusion of each brush bristle bundle 10 from the tip 7 is also constant. Further, since the insertion depth of the tip 7 into the hole 6 is regulated by the taper fitting of the both, when the cleaning member 2 is implanted in the disk 1 via the tip 7, the brush bristle bundle 10 from the disk 1
It is possible to arrange the protrusion length and the protrusion direction of the same as desired without variation, and it is possible to secure good cleaning performance. Especially when cleaning the pickup lens,
Although the disc 1 rotates at a high speed in the player, since the chip 7 is taper-fitted into each hole 6, it is possible to reliably prevent the disc 1 from coming off in the thickness direction.

[0011]

【Example】

(First Embodiment) FIGS. 1 to 6 show a first embodiment of a lens cleaner according to the present invention. In FIG. 2, the main body of the lens cleaner is composed of a disc 1 formed in substantially the same shape as a compact disc, and a plurality of cleaning members 2 scattered on the reading surface 1a side thereof.

The cleaning members 2 are distributed in the signal recording area 5 outside the lead-in area 3 of the disk 1 at a total of 6 positions, which are slightly displaced in the circumferential direction and the radial direction. That is, in the semicircular area of the signal recording area 5, the cleaning member 2 is displaced in the circumferential direction at an equal pitch larger than the lens diameter (6 mm), and the radial direction is increased by about 1.0 to 1.5 mm in the radial direction. The positions were shifted toward the outside, that is, they were dispersed and arranged on the virtual spiral. In the signal recording area 5 of the disc 1, circular holes 6 are provided in a penetrating manner at each planting point of the cleaning member 2. However, the inner peripheral surface of each hole 6 is formed as a tapered surface which is narrowed downward toward the reading surface 1a as shown in FIG.

In FIG. 3, the cleaning member 2 includes a tip 7 and a brush bristle bundle 1 in which a large number of extremely fine brush bristles 9 are bundled.
It consists of 0 and. The outer peripheral side surface of the tip 7 is formed as a tapered surface of the lower recess in FIG. 1 to form a so-called truncated cone shape, and a hole 11 is provided in the center of the lower bottom surface 7a. The brush bristles 9 are synthetic resin fibers having a self-lubricating property such as polyamide and polyacetal (wire diameter 40 to 80 μm).
m). Since the tips 9a of the brush bristles 9 come into contact with the pickup lens on the CD player side, they are formed in a hemispherical round shape so as not to scratch the lens, as shown in FIG.

The brush bristle bundle 10 in which the brush bristle 9 is bundled is press-fitted into the hole 11 of the tip 7 at its root portion 10a to be fixed and integrated. Specifically, as shown in FIGS. 5 and 6, a state in which a central portion of the straight brush bristle bundle 10 straddles the hole 11 on the lower bottom surface 7a of the chip 7 (a state in which it extends in the left-right direction in the drawings). Then, the wedge body 12 made of a thin aluminum plate is driven into the hole 11 up to the inner bottom surface of the wedge body 12 in a state orthogonal to the bristles of brush 10 (a state of extending in the front-back direction in the drawing). The length of the wedge body 12 is set to be slightly larger than the diameter of the hole 11, and both ends of the wedge body 12 partly cut into the positions facing the inner peripheral wall surface of the hole 11. The diameter of the brush bristle bundle 10 in each cleaning member 2 is equal to the diameter of the hole 11, but the tip portion has a slight spread.
In the state where the wedge body 12 is completely driven, the bristles of brush 10 are bundled in a circular shape and project from the tip 7 in a correct vertical shape and with a regular length. As shown in FIG. Buried so that it cannot be seen from the outside.

Then, the cleaning member 2 is inserted from the label surface 1b side of the disk 1 into each hole 6 from the tip side of the brush bristle bundle 10 and the chip 7 is inserted into the hole 6 in the state shown in FIG.
To fit. Since the inner peripheral side surface of the hole 6 and the outer peripheral side surface of the chip 7 are formed in a tapered shape that coincides with each other, the chip 7 can be easily inserted and guided into the hole 6. Hole 6 in chip 7
The insertion depth into the tube is regulated to a constant value by the taper fitting of the both. Since the hole 6 is recessed on the reading surface 1a side of the disk 1, the chip 7 does not move further from the position set on the disk 1 to the reading surface 1a side.
Therefore, it is possible to easily fit all the chips 7 in the same position in the thickness direction of the disc 1,
The lengths of the brush bristle bundles 10 protruding from the reading surface 1a are also uniform.

An adhesive tape 15 is attached around each chip 7 and each hole 6 on the label surface 1b side of the disk 1 so as to prevent the chip 7 from coming off to the label surface 1b side.
A circular label 13 is attached to the label surface 1b side of the area where the cleaning member 2 is planted on the disk 1, and the hole 6 and the upper bottom surface 7b of the chip 7 are covered with the label 13 as shown in FIG. ing. The tip 7 mounted in this way never comes off to the reading surface 1a side of the disc 1 due to the taper fitting, and the label surface 1
Movement is also restricted to the b side. Therefore, when the lens cleaner is loaded into the player and used, the disk 1 rotates at a high speed of several hundreds of times per minute, but the chip 7 does not come off from the disk 1 at this time as well. In the embodiment in which the tip 7 is simply fitted into each hole 6 instead of the taper fitting, the cleaning member 2 is likely to come off downward in FIG. 1, but there is no such detachment.

Since the cleaning members 2 are arranged on the disk surface in a dispersed manner, no more than two cleaning members 2 contact the pickup lens on the CD player side at the same time. On the other hand, with the rotation of the disk 1, all the cleaning members 2 come into contact with the lens one after another in the radial direction. Therefore, each cleaning member 2 does not stop the rotation of the disc 1 by applying an excessive contact resistance to the lens, while the rotation of the disc 1 and the movement of the pickup lens outward in the radial direction cause a short period of time. The lens can then be cleaned.

In this embodiment, the disc 1 having a thickness of 1.2 mm is used.
In contrast, the plastic chip 7 has a height of 1.0 mm,
The outer diameter of the lower bottom surface 7a is 1.1 mm, and the outer diameter of the upper bottom surface 7b is 1.4 m.
m, the diameter of the hole 11 is set to 0.5 mm, and the 20 bristles 9 made of nylon fiber with a wire diameter of 60 μm are bundled to form a wedge body 1.
It was driven into the hole 11 at 2 and the protruding length of the brush bristle bundle 10 from the lower bottom surface 7a of the chip 7 was set to 3.2 mm. But,
Each set value can be set without being limited to this. For example, the height of the tip 7 may be set to a value substantially equal to or less than the thickness of the disc 1.

(Second Embodiment) FIG. 7 shows a second embodiment of the present invention, in which the shapes of the taper formed on the inner peripheral side surface of the hole 6 and the outer peripheral side surface of the chip 7 are opposite to those of the first embodiment. It was set to be in the direction. That is, the taper formed on the outer peripheral side surface of the tip 7 is shaped so as to widen toward the tip side of the brush bristle bundle 10. The taper formed on the inner peripheral side surface of the hole 6 is formed in a so-called zigzag shape in which the taper is narrowed from the label surface 1b to the constricted portion 20 slightly inside and spreads from the constricted portion 20 to the reading surface 1a.

The cleaning member 2 is planted in the disk 1 such that the upper bottom surface 7b side of the chip 7 is the reading surface 1a of each hole 6.
It is inserted from the side and the chip 7 is fitted to the disk 1 as shown in FIG. Since the inner peripheral side surface of the hole 6 and the outer peripheral side surface of the chip 7 are tapered, the insertion depth of the chip 7 into the hole 6 can be easily positioned in this case as well. The lengths of the bristles 10 protruding from the reading surface 1a are also uniform.

With the chip 7 fitted in the hole 6, a gap 21 is formed between the label surface 1b of the hole 6 and the constricted portion 20 with the chip 7. The gap 21 was filled with an adhesive 22, and the chip 7 was fixed to the disk 1 with the adhesive 22. Therefore, when the disc 1 is mounted on the player, the hole 6 expands downward, but the chip 7 does not come off from the disc 1 not only in the upward direction but also in the downward direction. The taper formed on the inner peripheral side surface of the hole 6 is formed at least from the constricted portion 20 provided in the middle thereof to the reading surface 1.
It suffices that it extends toward a, and the constricted portion 20 and the label surface 1b may have the same diameter. In short, it is sufficient that the gap 21 is formed between the chip 7 and the hole 6.

(Third Embodiment) In order to disperse the cleaning members 2 in the outer peripheral area 5 of the disc 1, three or more cleaning members 2 are provided at least in the region of 180 ° in the circumferential direction of the disc 1. It suffices to plant the plants by shifting the positions in the circumferential direction and the radial direction as described above. As long as this condition is satisfied to the required minimum, for example, as shown in FIG.
As shown in FIG. 2, the cleaning member 2 may be optionally implanted in the outer peripheral area 5 of the disk 1 within a range of 360 ° at a total of 8 positions. The hole 11 to be provided in the chip 7 is preferably a bottomed recessed hole, but the hole 11 can also be a stepped through hole when the wedge body 12 is used, for example.

As a method of implanting the cleaning member 2 in the chip 7, for example, the brush bristle bundle 10 is coated with the synthetic resin forming the chip 7 and is once formed into a linear shape as in the case of making a vinyl-coated electric wire. Alternatively, a method may be used in which the coating is cut into a predetermined length, the coating is partially removed to expose the brush bristle bundle 10, and the tip 7 is configured with the remaining coating. A method of casting one end of the bristles 10 into the chip 7 to be injection-molded is also conceivable.

The root portions 10a of a large number of brush bristle bundles 10 may be directly inserted into the holes 11 of the tip 7 and fixed by adhesive. If various optical disc media such as various video discs, CD-ROMs, CD-Is, computer memories, etc. are used for the disc 1 other than the above-mentioned embodiment, a lens cleaner for a pickup cartridge corresponding to each device can be obtained. be able to.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a main part.

FIG. 2 is an overall plan view.

FIG. 3 is a perspective view of a cleaning member.

FIG. 4 is a vertical cross-sectional view of a main part of the brush bristles.

FIG. 5 is a perspective view illustrating a method of implanting a brush bristle bundle on a chip.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a vertical cross-sectional view of the main parts in the second embodiment.

FIG. 8 is an overall plan view showing a third embodiment.

FIG. 9 is a vertical cross-sectional view of a main part of a conventional example.

[Explanation of symbols]

 1 Disc 2 Cleaning Member 5 Signal Recording Area 6 Hole 7 Chip 9 Brush Hair 10 Brush Hair Bundle 10a Root

Claims (3)

[Claims] 1. A lens cleaner in which a cleaning member (2) is dispersedly planted on a disk (1), the cleaning member (2) is a bundle of brush bristles (10), and a root of the bristles (10). The disk 1 is provided with a hole 6 at the implantation position of the cleaning member 2, and the tip 7 is taper-fitted into the hole 6 so that each cleaning member can be inserted into the hole 6. A lens cleaner having a second chip 7 fitted therein. 2. The bristle bundle 10 is provided on the outer peripheral side surface of the tip 7.
The tapered inner surface of the hole 6 is tapered toward the reading surface 1a side of the disk 1, and the inner peripheral side surface of the hole 6 is fitted into the hole 6. The combined chip 7 is placed on the label side 1 of the disc 1.
The lens cleaner according to claim 1, wherein the lens cleaner is fixed on the b side with an adhesive tape 15. 3. The bristle bundle 10 is provided on the outer peripheral side surface of the tip 7.
Is formed in a taper surface that widens toward the tip side, and the inner peripheral side surface of the hole 6 is formed in a taper surface that widens toward the reading surface 1a side. 2. The lens cleaner according to claim 1, further comprising an adhesive 22 filled in a gap 21 formed between the chip 7 and the inner peripheral side surface of the hole 6 on the label surface 1b side to fix the chip 7 to the disk 1.