JPS62132285A - Disk cleaning device - Google Patents

Abstract

PURPOSE:To decrease the error rate of information reproduction by interlocking the loading action of a disk, contacting a cleaning member to the disk, interlocking to the shifting of a head, separating the cleaning member from the disk and executing the cleaning each time the disk is loaded. CONSTITUTION:When a cartridge 3 is loaded and a housing 4 is shifted in an X1 direction, a leaf spring 14 slides a chassis 17 and a cleaning assembly 8 is shifted in an X1 direction. Accompanying the shifting of a Z1 direction of the housing 4, a sleeve 11 descends, the cleaning assembly 8 is turned in an A2 direction, a brush 13 enters the cartridge 3 and contacts to a disk surface 2a of an optical disk 2. The optical disk 2 starts to rotate, the brush 13 contacts slidably with the disk surface 2a and is cleaned. When an optical head 6 executes an initialized action, a slanting surface 6a is abutted to an angle part 14a, the whole of the cleaning assembly 8 is displaced in a Y1 direction against a spring 15, the angle part 14a drops into a guide groove 18 and the brush 13 is separated from the disk surface 2a. Thus, the error rate of the information reproduction can be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to disk cleaning, and more particularly to a disk cleaning device installed in a disk device.

(Blue version of the invention) In conventional optical disc devices, the problem is that the information recorded on the disc is affected by dust, dirt, etc. that has subsequently adhered to the disc surface, and the reproduction cannot be performed normally. was there. This is a loss of information, and has been an obstacle to achieving a low error rate for optical disk drives that handle code data. In order to solve this problem of dust, etc., a method is known in which a disk creep is attached to a part of the head arm that holds the reading head to remove dust, etc. (see Japanese Patent Laid-Open No. 71528/1983). . In this system, the cleaner was in constant contact with the disk surface while the disk was rotating.

For this reason, the disk surface slides on the cleaner more than necessary, causing damage to the disk surface <1. ! There was that. In addition, the dust removed from the disk surface accumulates on the surface of the cleaner, and this accumulated dust increases the frictional force between the cleaner and the disk surface, causing fluctuations in the rotation of the disk.

[Purpose of the invention]

It is an object of the present invention to remove dust and dirt from the disk surface that may cause unreproducibility or erroneous playback when information is reproduced, without causing unnecessary scratches or scratches on the disk surface or fluctuations in the rotation of the disk. It is an object of the present invention to provide a disk cleaning device that removes errors and reduces the error rate of information reproduction.

[Summary of the invention]

According to the present invention, the rocking member contacts the disk in conjunction with the disk mounting operation, and moves the third member away from the disk in conjunction with the movement of the head. The structure is such that cleaning is performed temporarily prior to the cleaning.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 2, 3, and 4 schematically show the operating states of the disk cleaning device that are linked to the cartridge peak and trough operations and the optical head initialization operation, respectively, and FIGS. Figure 2, respectively.

The disk cleaning device shown in FIGS. 3 and 4 is shown separately.

As shown in FIGS. 2 to 5, the optical disc device 1 includes:
A housing for transporting the cartridge 1-ridge 3 containing the optical disc 2; a turntable 59 for rotating the optical disc 2; and a light for recording (writing) and/or reproducing (reading) signals on the rotating optical disc 2. Head 6, control circuit board assembly 7. Furthermore, it has a disk cleaning set\γ body 8.

Before installing the cartridge, as shown in Figure 2,
The housing 4 faces the opening 9, and the optical head 6 is located at a standby position P1. When the cartridge 3 is inserted into the housing 4 through the opening 9 as shown in FIG. 2, the housing 4 moves together with the cartridge 3 in the direction of arrow As shown in the figure, the optical disc 2 is hit on the turntable 57. When the optical disc 2 is set, the optical disc 2 starts rotating.Next, as shown in FIGS. 4 and 6, the optical head 6 starts the initializing operation and rotates the optical disc 2 in the arrow The optical head 6 moves to a position (read/write start position) P2 facing the innermost circumference.After the initialization operation is completed, the optical head 6 performs a read/write operation.

When the read/write operation is completed, the housing 4 operates in the opposite manner to the above-described mounting operation, and the cartridge 3 is ejected for the first time.

As shown in FIGS. 5 and 2, the disk cleaning assembly 8 includes a sleeve 11 fitted to a shaft 10 fixed to the F surface of the housing 4 and extending in the direction of arrow Y1; A first plate spring 12 in an elongated shape that is implanted and extends in the direction of arrow x1, and a dust removal brush 13 that is attached to the tip of the first temporary spring 12 (-JU) are implanted in the sleeve 11, The second leaf spring 14 has an elongated shape and has a substantially crank-shaped angle portion 14a at its tip end.The second leaf spring 14 forms an angle α with respect to the first leaf spring 12.
It extends downward by 1 fil. Due to its shape, the disk cleaning assembly 8 is biased in the direction of the arrow Y2 by a compression spring 15 provided at the arrow A110, and the sleeve 11 is in contact with a stopper 16 on the shaft 10.

Before the cartridge 1-ridge is installed, the disk cleaning assembly 8 is moved as shown in FIGS.
It has moved in two directions and is at a position moved in the direction of arrow Y2. Further, the angle portion 14a of the second leaf spring 14 is in contact with the chassis 17.

The first leaf spring 12 extends diagonally downward, and the dust removal brush 13 is located in a lowered position.

Note that the chassis 17 has a guide groove 1 as shown in FIG.
8 is the formation.

During the above-described mounting operation of the cartridge 3, the disk cleaning assembly 8 moves together with the housing 4. When the housing 4 moves in the direction indicated by the arrow, the second leaf spring 14 slides on the seats 17, and the disk cleaning assembly 8 remains in the poly position as shown in FIGS. 2 and 5). Move in the ×1 direction. As the housing 4 moves in the direction of the arrow 71, as shown in FIG.
The disk cleaning assembly 8 rotates in the direction of the arrow A2, and the dust removal brush 13 extends upward in the direction of the arrow 72, opening the housing 4 and the cartridge 3 (
(not shown) into the cartridge 3 and comes into contact with the lower disk surface 2a of the optical disk 2. optical disc 2
starts rotating, and the dust removal brush 13 touches the lower disk surface 2.
a are brought into relative sliding contact, and the lower disk surface 2a is cleaned. Note that the contact pressure of the dust removal brush 13 to the lower disk surface 2a is determined by the first. This is applied by the spring J of the second leaf springs 12 and 14.

When the optical head 6 performs the initialization operation, the optical head 6
The slope 6a contacts the angle portion 14a and pushes it aside, and the disk cleaning assembly 8 is displaced in the direction of arrow Y1 against the compression coil spring 15. As a result, the angle portion 14a comes off from the chassis 17 and falls into the guide groove 18, and as shown in FIGS. 4 and 6, the disk cleaning assembly 8 rotates in the direction of arrow △1 due to its own weight. The dust removal brush 13 descends and leaves the lower disk surface 2a. Thereafter, the optical disc 2 rotates in this state, ie, without the risk of widening the F-side disc surface 2a and without causing rotational fluctuations. Note that the angle portion 14a of the disk cleaning assembly 8 is locked to the side wall 18a of the guide groove 18, so that movement in the direction of arrow Y2 is restricted.

The angle portion 14a has an inclined bottom surface 18b when the housing 4 moves in the direction of arrow X2 during cartridge ejection operation.
The guide groove 18 moves in the direction of the arrow x2 along the guide groove 18 to the exit position. When the angle portion 14a is pulled out from the groove 18, the movement restriction in the direction of arrow Y2 by the side wall 18a is released, and the disk cleaning assembly 8 is moved by the compression coil spring 1.
5, it is locked to the stopper 16 in the direction of arrow Y2 (Q
It moves up to the neck and assumes the initial state shown in FIG.

Note that the disc cleaning device of the present invention can be applied not only to optical discs but also to other types of discs.
The same applies to devices to be worn.

〔Effect of the invention〕

According to the present invention, the cleaning member temporarily contacts the disc when the disc is mounted, and is separated from the disc during recording and playback, so that the cleaning member can clean the disc surface (without mounting or causing rotational fluctuations of the disc). The disk surface can be cleaned, the error rate in information reproduction can be reduced, and there is no need to provide a solenoid, a motor, etc. to move the cleaning member toward and away from the disk surface, so it is possible to reduce the cost.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a practical example of the disk cleaning device of the present invention during cleaning, and FIG. 3 and 4 are diagrams schematically showing the state of the optical disc device and the disc cleaning assembly before the cartridge is installed, when the car 1 to the cartridge is installed, and when the optical head is initialized, respectively, and FIGS. Figure 6 is Figure 1 and Figure 4, respectively.
jA1 of disk cleaning η phase X″r4 tree in the figure
ability, the 5th self 1 [Ministry 1 Karifi 7-uλ
- Optical disk device, 2... Optical disk, 2a... Lower disk surface, 3... Cartridge, 4... Housing, 5... Turntable, 6... Optical head, 6
a...Slope, 8...Disc cleaning assembly,
1°...Shaft, 11...Sleeve, 12...First plate spring, 13...Dust removal brush, 14...Second plate spring, 14a...Angle portion, 15... ...Compression coil spring, 16...Stopper, 17...Chassis, 18
...Guide groove, 18a...Side wall, 18b...Slanted bottom surface. The scale is λmnn-1-ll\...1ρ Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] The disk is mounted on a turntable and starts rotating with the head in a standby position, and the head is provided in a disk device that records or reproduces signals on the disk and comes into contact with the disk to clean the disk. A means for bringing the cleaning member into contact with the disk in conjunction with the mounting of the disk, and a means for separating the cleaning member from the disk in conjunction with the movement of the head to a position facing the disk. A disc cleaning device characterized by: