JPH04222982A - Disk cleaning device - Google Patents

Abstract

PURPOSE:To obtain a disk cleaning device by which minute dust is removed with large dust without damaging a disk. CONSTITUTION:This device is constituted of a 1st cleaning unit 101 in which a brush is taken as a cleaning tool and a 2nd cleaning unit 102 in which a cloth tape is taken as a cleaning tool, and a cleaning process is divided to two stages. After the large dust on the surface of the disk is removed by the brush at the 1st stage, the minute dust is wiped by the cloth tape at the 2nd stage. Then, the surface of the disk is prevented from being damaged by the large dust when the cloth tape and the surface of the disk are rubbed together.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cleaning device for cleaning the surface of an information recording medium, particularly an optical disk housed in a cartridge.

0002

2. Description of the Related Art FIG. 11 is a longitudinal sectional view of a conventional disk cleaning device disclosed in Japanese Patent Application Laid-Open No. 64-46278.
In the figure, cartridge (1) and disk (2)
is stored. (19) is a spindle with gears,
A handle (51) is attached to the upper end, and the lower part is a spline shaft. (52) is a reduction gear which meshes with the gear of the spindle (19) and the gear of the chuck (53) which rotates around the spindle (19). (50) is a housing. (21) is a cam with a wave-shaped outer periphery, and the center meshes with the spline shaft of the spindle (19). (54) is a table that fits into the shutter opening of the cartridge (1) to release the disc (
2) Center alignment is possible. (55) is a cleaning tool composed of a cylindrical brush or cloth; (56)
(57) is an interlocking pin that contacts the outer circumferential surface of the cam and swings the cleaning tool left and right, and (57) is an interlocking pin that constantly connects the interlocking pin (56) to the cam (21).
This is a spring that presses the

FIG. 12 shows a perspective view of a disk cartridge. This figure shows a state in which the shutter (1a) provided in the cartridge (1) is opened in the direction of arrow A, and a part of the disk (2) to be cleaned is exposed, and the disk is cleaned in this state. Further, this state is the same as when reading and writing information with an optical disc device. The disk (2) is provided with a hub (2a) made of a magnetic material for rotating the disk, and a center hole (2b) for positioning the center of rotation of the disk. On the other hand, the cartridge (
1) There is also a locating hole (1) for positioning the cartridge.
b) is provided.

Next, the operation will be explained. Table (5
Insert the cartridge (1) onto 4) with the shutter (1a) of the cartridge (1) open. At this time, the cleaning tool (55) and the disk (2) come into contact with each other. Next, lower the housing (50) from above and insert the spline shaft of the spindle (19) through the center hole of the disc (2) into the cam (2) provided on the table.
While engaging the center part of 1), insert the cartridge (2).
Attach it on top of. At this time, the tip of the chuck (53) rotates the disc (2).
) is fitted into the center hole.

In the above state, when the handle (51) is rotated, the cam (21) rotates in synchronization with the rotation, and the interlocking pin (56) rotates along the outer periphery of the cam (21).
The cleaning tool (55), which is integrated with the cleaning tool (55), reciprocates in the lateral direction. On the other hand, the disk (2) is rotated by the chuck (53) via the reduction gear (52) at a slower rate than the aforementioned cam (21). This operation cleans the surface of the disk (2).

[0006]

[Problems to be Solved by the Invention] As described above, the conventional disk cleaning device is composed of a single cleaning tool made of a brush or cloth, so when the brush is used to clean the disk, it is necessary to If dust cannot be removed sufficiently or if a cloth is used, there is a problem that if there is coarse dust, the dust will be dragged between the cloth and the disk surface and may damage the disk surface. It was hot.

The present invention has been made to solve the above-mentioned problems, and provides a disk cleaning device that can remove coarse dust and even minute dust without fear of damaging the disk. The purpose is to

[0008]

[Means for Solving the Problems] A disk cleaning device according to the present invention includes two types of cleaning tools in the device, divides the cleaning process into two times, and uses a brush to perform the second cleaning in the first cleaning process. Dust is removed using cloth during the process.

[0009]

[Operation] In the present invention, the cleaning process is divided into two stages, in which coarse dust on the disk surface is removed using a brush in the first stage, and minute dust is wiped off with a cloth in the second stage.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 8. In FIG. 1, this apparatus is comprised of a cleaning unit 1 (101) that cleans the disk surface with a brush, and a cleaning unit 2 (102) that cleans the disk surface with a cloth tape.

FIG. 2 is a longitudinal sectional view of the cleaning unit 1 (101), showing a state in which the cartridge (1) is set in a predetermined position and the disk (2) is being cleaned. (6
3) is an exterior panel that covers the entire cleaning unit 1 (101).The front panel (63a) is attached to the left side of the figure, and the cartridge (1) is attached to the front panel (63a).
An insertion port (63b) is provided for inserting the.

[0012] (64) is a disk cartridge loading mechanism that grips the cartridge (1) inserted from the insertion slot (63b) and loads the cartridge (1).
This is a mechanism that transports the object to a predetermined position and vice versa with the shutter (1a) of the object being opened. Note that the position where the cartridge (1) is manually inserted into the loading mechanism (64) and the position where the cartridge (1) is manually inserted are shown in the loading mechanism (64).
Limit switches for position detection are installed at three locations: the position where the cartridge (1) is set in the specified position when the cartridge (1) is operated (the state shown in Figure 2), and the position where the reverse operation is performed and the cartridge (1) is ejected. It is being

[0013] (65) is the main base of the cleaning unit 1 (101). The loading mechanism (64) and the locating pin (66) for positioning the cartridge (1) are attached to the upper part, and the disk rotation mechanism (66) is attached to the lower part. 6
8), a cleaning mechanism (104) and a bottom plate (111) are attached.

Next, the configuration of the disk rotation mechanism (68) will be explained. (114) is a turntable,
The upper part has a ring-shaped magnet (115) and a ring-shaped stopper (116) for adsorbing the disk (2) and transmitting rotational power, and the lower part has a spur gear (1
14a) is provided. Turntable (114)
is the bearing stand (117) attached to the base (65)
By bearing (118) and spindle (119)
) is rotatably mounted via the The upper part of the spindle (119) is provided with a tapered part to facilitate centering of the disk (2).

On the other hand, the gear (122) is attached to the base (65)
The small diameter gear portion (122a) of the gear (122) meshes with the spur gear portion (114a) of the turntable (114). Note that the DC motor (124) is attached to the base (65).

Next, the configuration of the cleaning mechanism (104) will be explained. FIG. 3 is a perspective view of the cleaning mechanism (104). (203) and (204) are rollers, and the base (65
) is rotatably supported by shafts (205) and (206) attached to the shafts (205) of the rollers (203).
is directly connected to the motor (202).

Further, a belt-shaped brush (201) is attached to the rollers (203) and (204) so as to be pressed against the surface of the disk (1). Motor (2
02) rotates, the roller (
203) rotates, and along with it the brush (201)
rotates between rollers (203) and (204). In this configuration, the brush (201) is the disk (1
) will rotate in the radial direction.

Next, the configuration of the cleaning unit 2 (102) will be explained. FIG. 4 is a longitudinal sectional view of the cleaning unit 2 (102), showing a state in which the disk cartridge is set in a predetermined position and the disk (2) is being cleaned. (3) is the exterior panel, which is the front panel on the left side of the figure (
3a) is provided with a cartridge insertion opening (3b). (4) is a loading mechanism for the disk cartridge, and has the same configuration as the loading mechanism (64) of the cleaning unit (101).

(5) is the main base of the cleaning unit 2 (102), the loading mechanism (4) and the locating pin (6) for positioning the cartridge are attached to the upper part, and the disk and cam rotation mechanism (8) are attached to the lower part.
An actuator (10) and a bottom plate (11) for feeding the disc cleaning cloth tape (13) little by little are attached. The bottom plate (11) has a square hole, and one end of the lid (12) is attached to the bottom plate (
11), and is configured to open and close in the direction of arrows B1-B2 in the figure. In addition, a cleaning mechanism 2 (9) is attached to the lid (12), and the cleaning cloth tape (13) can be replaced when the lid (12) is open (moved in the direction of arrow B2). There is.

Next, the disk and cam rotation mechanism (8)
The configuration of is explained below. (14) is a turntable, which has a ring-shaped magnet (15) and a ring-shaped stopper (16) on its upper part for attracting the disc (2) and transmitting rotational power, and a spur gear (14a) on its lower part. is molded. This turntable (14) is rotatably supported by a bearing stand (17) attached to a base (5) via a bearing (18) and a spindle (19). A tapered portion is provided at the top of the spindle (19) to facilitate centering of the disk (2), and a cam (21) having a spur gear (21a) rotates at the bottom via a bearing (20). It can be installed freely. Below the protrusion (21b) of this cam (21) is a tapered roller (3) provided in a cleaning mechanism (9) which will be described later.
7) is formed with a tapered portion to make it easier to enter from the arrow B1.

On the other hand, the gears (22) and (23) are attached to the base (5).
) is rotatably supported by the shaft (7) attached to the small diameter spur gear part (22a
) is the spur gear part (14a) of the turntable (14)
The large-diameter helical gear portion (22b) meshes with a screw gear (25) attached to the shaft portion of the DC motor (24). The small diameter spur gear part (23a) of the gear (23) also located at the bottom is the spur gear part (21a) of the cam (21).
The large diameter helical gear portion (22b) meshes with a screw gear (27) attached to the shaft portion of the DC motor (26). However, the turntable (14) and cam (2)
The number of teeth of the gear provided in 1) is slightly different,
When driven by motors with the same rotation speed, each rotation speed is slightly different. In addition, DC motor (2
4) and (26) are attached to the base (5) in a manner that they face each other.

Next, the configuration of the cleaning mechanism 2 (9) will be explained. (28) is a sponge roller with a shaft, which is used to evenly press the cleaning cloth tape (13), which is slightly wider than the data surface (e) of the disk (2), onto the disk surface. 28a) is constantly pushed upward by the leaf spring (33) via the guides (29) and (30). On the other hand, both end shaft parts (2
8a) is also fitted into the vertical oval holes provided in the side plates (31) and (32), and the sponge roller (
28) will not jump upward.

(34) is a joint plate, and the side plate (3
1) Cleaning mechanism 2 (9) by installing (32)
form a lateral movement frame. (35) is a joint plate (34
) is attached to the roller support plate, and the end has a shaft (3
6), and a tapered roller (37) is rotatably attached. On the other hand, two slide shafts (41) sandwich this roller (37) between the side plates (3
1) (32), and a slider (43) for moving the cloth tape (13) is attached to the right shaft end of the two slide shafts (41).

The slide shaft (41) also has a slide bearing (42a) attached to the bearing base (42).
) is supported for horizontal and lateral movement. (39) is a compression coil spring, which is fitted into the slide shaft (41) in a compressed state as shown in the figure, and one end is in contact with the side plate (32), and the cleaning mechanism 2
(9) The movable parts (other than the bearing base) always try to move to the left in the figure. Therefore, the roller (3
7) is always in contact with the outer peripheral surface of the cam (21) mentioned above.

[0025] (10) is an actuator (rotary solenoid), and when energized, the yoke (10a) is attracted and rotates by a certain angle, and when energized, it is returned to the home position by a built-in return spring. ing. (The one used here rotates 25 degrees.) Therefore, since one end of the pin (10b) attached to the yoke (10a) engages with the groove of the slider (43), it moves the slider (43) back and forth. It will make you exercise.

The details of the cleaning mechanism 2 (9) will be explained below with reference to FIG. 5. The slider (43) has a groove (43) that engages with the actuator pin (10b) as shown in the figure.
a) is provided and its upper part expands to form a groove (43a).
Oval holes are provided in the lateral direction on both sides of the holder, and the holder can be slid in the lateral direction using the elliptical holes and the slide shaft (41). Therefore, the cleaning cloth tape (13
) is replaced with a new one and the lid (12) is closed, the actuator pin (10b) and the slider groove (43a) engage with each other no matter where the slider (43) is in the lateral position. Further, one end of a leaf spring (45) is attached to the lower part of the slider (43), and the other end is attached to the lower part of the slider (43) when the driving reel (46) for winding the tape (13) is set from the direction of arrow D. , is designed to mesh with a ratchet tooth profile formed on the flange portion of the reel (46).

[0027] (44) is a mountain-shaped leaf spring, and the mountain portion (center portion) is attached to the joint plate (34), and both ends are in an expanded state. One end is the drive side reel (
46), and the other end is fitted with cloth tape (
13) comes into contact with the flange portion of the driven reel (47) stored in a wound state, and plays the role of a brake. Therefore, the rotation of disk (2) is indicated by arrow E.
Therefore, the friction force causes the tape to move in the direction of arrow F.
The reel (46) will not rotate in the opposite direction even if it is pulled in the direction.

(48) is a bearing plate made of an elastic material for rotatably supporting both shafts provided on the reel (46) and (47), and the lower part is connected to the side plate (31) (
32), and when the reels (46) and (47) are pushed in from the top, both shaft ends (46a and 47a) of the reels cause the bearing plate (4
8) is bent slightly open, and each bearing plate (
48), and the reel shaft is fitted into the hole. Also, when taking out the reel, pinch the reel with your fingers and press your fingertips to open the bearing plate and remove the reel.
46) and (47) can be easily removed.

FIG. 6 shows FIG. 5 with the reel (46) attached.
7 is a perspective view of the reel (46). The cleaning cloth tape (13) is placed over the key groove of the winding core (46a), and the key (49) is pushed in from above. to attach the end of the tape. The difference between the reels (46) and (47) is that the reel (46) has a ratchet tooth profile (46b) formed on the outer periphery of one side of the flange portion, whereas the reel (47) does not have a ratchet tooth profile. However, as long as the ratchet tooth profiles are in the same direction, there is no problem even if the ratchet tooth profiles are formed on the reel (47). FIG. 8 shows the outer peripheral shape of the cam (21).

Next, the operation will be explained. With the device powered on, insert the cartridge (1) into the insertion slot (63a) of the front panel (63a) of cleaning unit 1 (101).
63b), push the cartridge in about 2/3 of the length. At this time, the shutter (1a) of the cartridge (1) is opened and the cartridge (1) is held by the loading mechanism (64). At the same time, the first position detection limit switch in the loading mechanism (64) is activated, and the loading mechanism (64) is operated by the motor to draw the cartridge (1) into the apparatus. Next, the cartridge (1) is lowered horizontally. At this time, the cartridge (1) is positioned by the locate pin (66) provided on the base (65), and the disc (
2) is positioned by a ring-shaped stopper (116) and a spindle (119) while being attracted by a magnet ring (115) provided on a turntable (114). At the same time, at the opening of the shutter (10) of the cartridge (1), the disk (2) is connected to the belt-shaped brush (201) of the cleaning mechanism (101).
Press down lightly so that the disc (2) and brush (201) are in contact (Figure 2 shows this state).

When the cartridge (1) and disk (2) are positioned as described above, the loading mechanism (6
The second position detection limit switch in 4) operates,
DC motors (124) and (202) are driven simultaneously. When the DC motor (124) is driven, the turntable (
114) rotates. Furthermore, when the motor (202) is driven, the roller (203) rotates in the H direction via the reduction gear (not shown) shaft (205), and as a result,
A belt-shaped brush (201) rotates in the J direction between rollers (203) and (204). That is, the brush (201) cleans the disk data surface (e) shown in FIG. 4 while rubbing the disk surface in the radial direction of the disk (2). This cleaning time is set by a timer in the device, and when the time is over, a signal from the timer will cause the DC motors (124) and (202
) will stop. At the same time, the loading mechanism (64) is operated in the opposite manner as described above, and the cartridge (1) is ejected from the insertion opening (63b) of the front panel (63a). This completes the first stage of the cleaning process.

Next, the cartridge (1) discharged from the cleaning unit (101) is transferred to the cleaning unit (102).
When the cartridge (1) is pushed in from the insertion opening of the front panel (3a) in the same manner as in the first cleaning process, the loading mechanism (4) positions the cartridge (1) at a predetermined position in the same manner as in the first cleaning process. At the same time, at the shutter (1a) opening of the cartridge (1), the disk (2) is exposed to the cloth cleaning tape (13) on the sponge roller (28).
Press down lightly until the disk (2) and cloth tape (13) are in contact (Figure 4 shows this state). When the cartridge (1) and disk (2) are positioned in this way, the second position detection limit switch in the loading mechanism (4) is activated, and the DC motor (24) and (
26) are simultaneously driven, and the reduction gears (25) and (22
), (27) and (23) to turntable (14).
) and the cam (21) each start rotating independently.

When the turntable (14) rotates, the magnetic force of the magnet ring (15) generates a frictional force on the contact surface between the ring-shaped stopper (16) and the disk (2), causing the disk (2) to rotate. On the other hand, cam (
21) rotates, the cleaning mechanism (9) except the bearing base (40) reciprocates in the directions of arrows C1 and C2 in FIG. 4 due to the roller (37) in contact with its outer circumferential shape (FIG. 8). That is, the cleaning cloth tape (13) cleans the disk surface by reciprocating the distance (l) shown in FIG. 8 while rubbing the disk surface in the radial direction of the disk (2). At this time, since coarse dust has been removed in the previous process, it will not scratch the disk (2) surface. This cleaning time is set by a timer inside the device (usually 30 seconds to 1 hour).
minutes), and when that time is over, the DC motors (24) and (26) are stopped by the timer signal. At the same time, operate the loading mechanism (4) in the reverse direction described above (rotate the motor in the opposite direction), and insert the cartridge (1) into the front panel (3a).
) is discharged from the insertion port (3b).

At this time, the third position detection limit switch in the loading mechanism (4) is activated, and the actuator (10) is driven by the signal, and the yoke (1) is activated.
The pin (10b) attached to 0a) is rotated through a certain angle. As a result, the slider (43) engaged with the pin (10b) is moved in the direction of arrow G1 in FIG. 5, and the leaf spring (43) attached to the slider (43) is moved.
45) pushes the ratchet tooth profile provided on the flange portion of the reel (46), and the reel (46) is rotated by one tooth of the ratchet tooth profile in the direction of arrow (H1). That is, the cleaning cloth tape (13) is attached to the reel (4).
6), the tape surface (13a) that comes into contact with the disk (2) moves a little and becomes a clean tape surface.

A sensor (not shown) detects the completion of the above series of operations and turns off the power to the actuator (10). The slider (43) is returned to the direction of arrow G2 by the return spring built into the actuator (10), resulting in the state shown in Fig. 5. When the actuator (10) operates next, the reel (46) also returns to the position of the ratchet tooth profile. Only one tooth will be sent. Cleaning unit 2 (102
) Then all this operation will be done automatically and it will be completed. This means that the second cleaning step is completed.

Furthermore, in the cleaning unit 2 (101), a predetermined amount of dirty cloth tape (13) is placed on the reel (46).
When the tape is caught, a sensor (not shown) is activated and a tape replacement lamp lights up on the front panel (3a) of the device, and the device will not operate automatically unless the tape is replaced. Therefore, at that time, loosen the knob (49) shown in FIG.
12) (in the direction of arrow B2) and replace it with a new reel of cleaning cloth tape, close the lid (12), and
By fixing the lid (49) with the knob (49) (in the direction of arrow B1), the disk can be cleaned again.

Note that the cleaning mechanism 1 (104) of the above embodiment
The belt-shaped brush (201) is the roller (203).
) (204), but even if the brush rotates while reciprocating the data surface of the disk in the radial direction, the same effect as in the above embodiment can be achieved. . That is, as shown in FIGS. 9 and 10, the brush (301
) is directly connected to the motor (302), and the motor (302)
When energized, it rotates in the direction of arrow M. Further, the motor (302) is attached to the slider (303) via a metal fitting. The slider (303) is the rail (
At the same time, there is a groove (303a) at the bottom, and a disk-shaped table (305) is fitted into the groove (303a).
4) When the convex part provided near the outer periphery of the table (304) is set and the table (304) is rotated in the L direction by the motor (306), the convex part of the table (304) will move along the groove (303a) of the slider (303). (304a) is shown in Figure 1
0 in the N direction, and as a result, the slider (303) reciprocates in the K direction.

[0038]

[Effects of the Invention] As described above, according to the present invention, relatively coarse dust is removed by a brush in the first step of cleaning,
After that, in the second step, the cloth tape is used to wipe off even the minute dust, so there is no risk of damaging the disk surface due to coarse dust when wiping with the cloth tape, and a highly reliable disk cleaning device with dust removal effect can be obtained. effective.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

FIG. 2 is a longitudinal cross-sectional view of the cleaning unit 1.

FIG. 3 is a perspective view of the cleaning mechanism 1 as well.

FIG. 4 is a longitudinal cross-sectional view of the cleaning unit 2.

FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 4;

FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a perspective view of that of FIG. 6;

8 is a diagram showing the outer circumferential shape of the cam in FIG. 4. FIG.

FIG. 9 is a perspective view of another embodiment of the cleaning mechanism 1.

FIG. 10 is a plan view of the main part of the device shown in FIG. 9;

FIG. 11 is a longitudinal sectional view of a conventional disk cleaning device.

FIG. 12 is a perspective view of a conventional disk cartridge.

[Explanation of symbols]

1 Disc cartridge 2 Disc 13 Cleaning cloth tape 101 Cleaning unit 1 102 Cleaning unit 2 104 Cleaning mechanism 1 9 Cleaning mechanism 2 201 Cleaning brush

Claims (1)

[Claims] 1. A disk cleaning device for cleaning an optical disk housed in a cartridge, comprising: a first cleaning unit that removes coarse dust with a brush; and a second cleaning unit that removes minute dust with a cloth tape. A disk cleaning device comprising: