JPH03278384A - Lens cleaner for optical pickup - Google Patents

Abstract

PURPOSE:To easily clean up a lens and to maintain the performance of a pickup by providing a freely shrinkable bellows and an air diffuser to diffuse the air extending over the entire movable range of the pickup by shrinking/extending over the entire movable range of the pickup by shrinking/extending the bellows at a cartridge. CONSTITUTION:The bellows 12 shrunk and extended freely and with a restoring force for compression is loaded on the cartridge 5, and the air diffuser 13 com municated with the bellows 12 via a pipe 12a is provided. When a compression lever 16 provided protrusively at the cartridge 5 is turned in a direction of supporting lever 15 setting a rotary shaft 19 as an axis, the bellows 12 provided connectively with the compression lever 16 is turned, and the air filled in the bellows 12 is diffused extending over the entire movable range of the lens 2 from the air diffuser 13. The cleaning of the lens 2 at an arbitrary position can be surely performed by covering the entire movable range of the lens with the diffused air. In such a way, it is possible to easily clean up the lens 2 and to maintain the performance of the pickup extending over a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a lens cleaner for a pickup such as an optical disk drive device.

BACKGROUND ART FIG. 3 is a schematic diagram of a conventional optical disk drive device.

In FIG. 3, 1 indicates a recording medium 8 in a cartridge 5.
A pickup that is movable in the radial direction, and a lens 2 that irradiates a beam onto the recording medium 8 and receives reflected light.
has.

3 is a turntable on which the cartridge 5 is placed; 4;
is a spindle motor that rotates the turntable. Reference numeral 6 is a heath to which a spindle motor 4 and a pickup 1 are attached. Reference numeral 7 denotes a panel of the drive device, and is provided with an insertion opening 9 into which the cartridge 5 is inserted.

Next, the operation of the above conventional example will be explained.

FIG. 4 is an explanatory diagram showing a conventional method of cleaning a pickup lens.

In FIG. 4, 11 is a cleaning air spray;
0 is a thin tube attached to the air outlet of this air spray 11. The thin tube 10 is inserted into the drive device through the cartridge insertion port 9, and air from the air spray 11 is sprayed onto the lens 2 from the thin tube 10 to perform cleaning.

The lens 2 can also be cleaned by such conventional cleaning methods.

Problems to be Solved by the Invention However, in the conventional lens cleaning method described above, the optical pickup 1 is installed in a drive device at a position away from the cartridge insertion opening 9, and since the optical pickup 1 is movable, the lens 2 is The stop position cannot be fIa,
There was a problem that cleaning the lens 2 was difficult.

The present invention solves these conventional problems and aims to provide an excellent pickup lens cleaner that can easily clean the lens.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cartridge with a bellows that can be expanded and contracted, and an air blower that blows air over the entire movable range of the lens of the pink amplifier by expanding and contracting the bellows. It is equipped with an air outlet.

Therefore, according to the present invention, by expanding and contracting the bellows, the air inside the bellows can be mixed and cleaned from the air outlet over the entire movable range of the lens of the pickup, so that the lens can be easily cleaned regardless of the stop position of the lens. can be cleaned.

Embodiment FIGS. 1 and 2 show the configuration of an embodiment of the present invention. FIG. 1 (A) is a plan view, (B) is a side view, and FIGS. Components with the same reference numerals indicate the same components.

In FIG. 1(a), 5 is a cartridge in which a recording medium (not shown) is built-in, and the cartridge 5 includes an
A snake that is flexible and resilient to compression! 112 is installed. Reference numeral 13 denotes an air outlet that communicates with the bellows 12 via a vibrator 12a, and has a size and shape that can cover the entire movable range of the lens 2 provided on the pickup 1, as shown in FIG. .

Reference numeral 14 denotes an opening into which the recording medium of the turntable 3 is inserted, as shown in FIG. A compression lever 16 compresses the bellows 12, and is rotatable about a rotation shaft 19 in the direction of the arrow.

17 is a shutter arranged so that the air outlet 13 and the recording medium are exposed when opened, and 18 is a check valve attached to the bellows 12, which usually prevents backflow of air and prevents the compressed bellows 12. Open when restored. 19 is compression lever 1
This is the lever rotation shaft that rotates the lever 6.

In FIG. 2, reference numeral 1 denotes a pickup, which is arranged on a base 6 so as to be movable in the radial direction of the recording medium in the cartridge 5. 2 is the lens of the pickup 1, 3 is a turntable attached to the shaft of the spindle motor 4, and 6
is a base on which a spindle motor 4 and a pink up 1 are provided. Reference numeral 7 represents a panel to which members are attached, and reference numeral 9 represents a cartridge insertion slot provided in the panel 7.

In FIG. 1(a), the compression lever 16 protruding from the cartridge 5 is rotated around the rotation shaft 19, and the support lever 1
5, the bellows 12 connected to the compression lever 16 is compressed, and the air filling the bellows 12 is blown from the air outlet 13 over the entire movable range of the lens 2.

In this way, according to the above embodiment, the air blown out from the air outlet 13 by compressing the bellows 12 covers the entire movable range of the lens 2, thereby ensuring cleaning of the lens 2 at any position. Moreover, it has the advantage that the performance of Pink Amplifier 1 can be maintained.

Effects of the Invention As is clear from the above embodiments, the present invention provides a cartridge with a telescopic bellows and an air outlet for blowing out air over the entire movable range of the lens of the pickup by expanding and contracting the bellows. Therefore, the lens can be easily cleaned regardless of where the lens is stopped, and the use of this device has the effect of maintaining pink-up performance over a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a lens cleaner according to an embodiment of the present invention, and FIG. 1 (A) is a plan view, and FIG.
is the same side view. FIG. 2 is a block diagram of the present invention when the cartridge is inserted, FIG. 3 is a schematic block diagram of a conventional optical disk drive device, and FIG. 4 is an explanatory diagram of a conventional pink-up lens cleaning method. 1...Pickup, 2...Lens,
5... Cart nozzle, 12... Bellows,
12a... Pipe, 13... Air outlet, 15... Support lever, 16... Compression lever, 17... Shutter, 18・・・・・・
・Check valve, 19...Lever rotation shaft.

Claims (1)

[Claims] An optical pickup lens cleaner that has an expandable and retractable bellows built into the cartridge and an air outlet that communicates with the bellows and blows air out to the entire possible range of contact with the optical pickup lens by expanding and contracting the bellows. .