JPH02273334A - Objective lens cleaner for optical head - Google Patents

Abstract

PURPOSE:To cope with a device using a cartridge as well by attaching a brush, etc., to a lever which opens/closes the shutter of the cartridge interlocking with the insertion and drawing of the cartridge to the device. CONSTITUTION:When a cartridge 1 is inserted, rollers 13 and 14 attached to the tip of open/close levers 4 and 5 abut on the edge surface of the cartridge 1. When the cartridge is further inserted, the levers 4 and 5 rotates in the direction of an arrow around rotation centers 6 and 7. At such a time, the roller 13 pushes a shutter 2 in the direction of the arrow, and the shutter is opened. A brush attached to the lever 5 passes through the locus of a dashed line, and passes over an objective lens 11. At such a time, the brush strokes the top face of the lens 11, and eliminates deposited dust, etc. Next when the cartridge is pulled out, the levers 4 and 5 turn in the direction reverse to the arrow by the force of springs 8 and 9. At such a time, the brush passes over the lens 11, strokes the top face of the lens 11, and the deposited dust, etc., are eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for cleaning an objective lens of an optical head in an optical tisf recording/reproducing device.

[Conventional technology]

As described in Japanese Patent Application Laid-Open No. 62-24449, in the conventional device, a single disk is placed on a tray, and a lens cleaning brush is attached to a separate cleaning arm that moves in conjunction with the tray when the tray is inserted into the device. It was prepared. This is mainly used in playback-only optical disc playback devices that do not use cartridges.

[Problem to be solved by the invention]

The above conventional technology is not suitable for a type that uses a cartridge to protect the disc in addition to the optical disc playback device that performs recording and playback, and also requires a separate cleaning arm, which reduces the number of parts. There was a problem that caused an increase in the number of people and costs.

The present invention aims to be applicable to an optical disc device for recording and reproducing, which uses a cartridge for protecting the disc, and also has an object of the present invention to be applicable to an optical disc device that performs recording and playback. The purpose is to prevent an increase in the number of parts and cost by providing a lever with a lens cleaning brush, etc., without using a separate lever, etc.

[Means to solve the problem]

In an optical disc recording and reproducing device of the type in which a cartridge is inserted and pulled out to protect the disc, a brush for lens cleaning, etc. is provided on the lever for opening and closing the shutter of the cartridge, which is driven in conjunction with the insertion and withdrawal of the cartridge into the device. , this flexible brush moves while stroking the surface of the objective lens.

[Effect]

Insert the disk protection cartridge into the device.

When the cartridge is pulled out, an opening/closing lever for opening and closing the shutter of the cartridge is fully cut, and a brush or the like provided on the opening/closing lever cleans the surface of the objective lens of the optical head.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4. In these figures, 1 is a shutter indicating a cartridge containing an optical disk. Reference numeral 6 indicates a pocket that serves as a guide when inserting and removing one cartridge.The opening/closing levers 4 and 5 are attached to pocket 3 and rotate in the direction of the arrow about 6 and 78. The opening/closing levers 4 and 5 have a force mj applied by springs 8 and 9 to rotate them in the direction opposite to the direction of the arrow, and are held in the position shown in FIG. 1 by a stopper mechanism not shown in the figure. It looks like it's going to stop. 5. Remove dust by stroking the objective lens on the opening/closing lever. lF!
10 brushes are attached for cleaning. A pickup 12 equipped with an objective lens 11 is moved in the direction of the arrow by a guide mechanism (not shown) during recording and reproduction, but when the cleaning device of the present invention is activated (at times, the pickup lock mechanism ζ (not shown) Therefore, it is fixed at the position shown in FIG.

In Figure 1, move one cartridge in the direction of the arrow 6)8)
When the cartridge is inserted as a guide, the rollers 13 and 14 attached to the tips of the opening/closing levers 4 and 5 come into contact with the end face of one cartridge. At this time, roller 13 enters the recess 15 of the second shutter, and roller 14 comes into contact with the end surface of one cartridge.

When one more cartridge is inserted, the opening/closing levers 4 and 5 rotate in the direction of the arrow about the rotation centers 6 and 7. At this time, the 130-ra pushes the second shutter in the direction of the arrow, and the shutter opens.

The brush 1o, which is looked into by the opening/closing lever 5, moves along the trajectory shown by the dashed line to the position shown in FIG. 6, and at this time passes over the objective lens 11. At this time, the brush 10 strokes the upper surface of the objective lens 11 to remove attached dust and the like. Next, as shown in FIG. 2, when one cartridge is pulled out in the direction of the arrow, the opening/closing levers 4 and 5 are rotated in the direction opposite to the direction of the arrow about rotation centers 6 and 7 by the force of the springs 8 and 9. At this time, the brush 10 passes over the objective lens 11 and strokes the upper surface of the objective lens 11. As mentioned above, when inserting and removing one cartridge,
A brush 10 strokes the upper surface of the objective lens 11 to remove dust and the like on the objective lens.

[Effect of birth]

According to the invention - insertion of the cartridge.

The objective lens is cleaned twice by the operation of pulling it out, and the dust attached to the objective lens can be wiped away each time the cartridge is inserted and pulled out during recording and playback of the disc, which improves the S/N ratio. This has the effect that a good reproduced signal can be obtained.

Also, without having to separate the cleaning lever etc.
By providing a brush on the opening/closing lever of the shutter, it is possible to use a cleaning device for the objective lens, which has the effect of reducing costs by reducing the number of parts.

[Brief explanation of drawings]

1 and 3 are plan views of one embodiment of the present invention, FIG. 2 is an elevational view of FIG. 1, and FIG. 4 is a perspective view of an opening/closing lever, etc. 1...Cartridge 2...Shutter 6...
Pocket 4...Opening/closing lever 5...Opening/closing lever 6...Rotation center 7...Rotation center 8.
...Spring 11...Objective lens 12...Pickup 16°14...Roller 15...Concave part

Claims (1)

[Claims] 1. The optical disc recording and reproducing device has a lever for opening and closing the shutter of the cartridge for protecting the optical disc, and the opening/closing lever is equipped with an object that strokes the objective lens for cleaning the objective lens, and the shutter of the cartridge is Objective lens cleaning for an optical head, characterized in that a brush or the like is attached to a position such that it strokes the surface of the objective lens of the optical head when the opening/closing lever is rotated by insertion into or withdrawal from an optical recording/reproducing device. Device.