JPS63231780A - Disk cleaner - Google Patents

Abstract

PURPOSE:To eliminate a fear of flawing a disk with a dirty cleaning means by providing a count indicating means for the number of cleaning times. CONSTITUTION:A slider rack 7 is moved in the direction of an arrow L' and then an end surface of the slider rack 7 under the condition (condition G) of just prior to returning its rest condition, is brought into contact with a protrusion part 25a of a detecting lever 25, and furthermore the slider rack 7 is moved on in the direction of the arrow L', thus turning the detecting lever 25 around an axis 26 for the lever which is fixed on a base 1. Consequently, when a rod 29 is moved in the direction of the arrow L', and a lever part 30a of a counter 30 is pushed in the direction of the arrow L', the numerical value of the counter 30 is increased by one. This counted number of cleaning times is indicated by the indicating means consisting of the detecting lever 25, a spring 28, the rod 29 and the counter 30, so that the replacement time for a cartridge 19 can thus be recognized by the indicating means.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cleaning device for a recording medium (hereinafter referred to as a disk) on which information signals are recorded concentrically or spirally.

BACKGROUND TECHNOLOGY 2B-7 In recent years, video and sound playback devices have been used to record video signals on spiral recording lines of a disk.

There is a video disc player that is placed on a turntable, rotated, and traced by a pickup to reproduce the video signal. It has functions such as speed search, random access function, clear picture and sound, and like a VTR, it can be easily used at home using a TV.

Video disk players currently on the market include optical and capacitive types. In the latter method, playback is performed by a playback needle that slides into contact with the disc, and the electrode provided on the playback needle is scanned along the recording trajectory of the disc, and the information signal is read as a change in capacitance. Reliable contact with the sliding surface is required. For example, the depth of the irregularities on the signal surface is several thousand holes and the width is about 10,000 holes, and the thickness of the sliding contact surface of the electrode is several thousand holes and the width is also about several thousand holes. Even if a minute interval occurs between the contact surfaces, it becomes impossible to detect changes in capacitance satisfactorily for the three vanes. The cause of the gap between the signal surface and the sliding contact surface of the electrode is due to the undulation of the surface of the disk, and the disc material or dust in the air intervening as foreign matter between the signal surface and the sliding contact surface of the reproduction needle. This may be due to a number of factors, but the latter ratio is particularly large.

Therefore, several cleaning devices have been proposed for cleaning the disk surface in order to maintain uniform contact between the disk and the playback needle.

An example of a conventional disk cleaning device will be described below with reference to the drawings.

FIG. 6, FIG. 7, FIG. 8, and FIG. 9 are an exploded perspective view and a plan view showing the operation of a conventional disk cleaning device.

In Fig. 6, 1 is a base, 2 is a motor fitting, 3 is a motor, 4 is a worm, 6 is a shaft for a worm wheel, 6 is a war wheel, 7 is a slider rack, 8 is a rail,
9 is the axis for the gear person, 10 is the gear person, 11 is the fulcrum base, 1
2 is a shaft for gear B, 13 is a shaft for gear B, 14 is a shaft for rotating gear,
16 is a rotating gear.

16 is an arm, 17 is a cartridge cartridge, 18 is a magnet, 19 is a cartridge, 20 is an inner switch,
21 is a peripheral switch, and 24 is a rest switch.

The operation of the disk cleaning device configured as described above will be explained below.

In FIGS. 7, 8, and 9, a motor fitting 2 in which a worm 4 coupled to a motor 3 and a motor 3 are integrally attached is fixed to a base 1. As shown in FIGS. This worm 4, a small diameter portion 6a of a worm wheel 6 rotatably attached to a worm wheel shaft 5 fixed to the base 1,
Worm wheel 60 large diameter part 6b and slider rack 7
The rack parts are engaged. The slider rack 7 is mounted on a rail 8 fixed to the base 1 so as to be slidable in the L' force direction. The rack part of the slider rack 7 and the gear A shaft 9 fixed to the base.
Large diameter part 10iL of gear A10 rotatably attached to
, the small diameter portion 10b of the gear A10, and the large diameter portion 13 of the gear B13 rotatably attached to the gear B shaft 5 page 12 fixed on the fulcrum base 11.
+L, the small diameter portion 13b of the gear B13 and the rotating gear 15 rotatably attached to the rotating gear shaft 14 fixed on the fulcrum base 11 are meshed with each other.

An arm 16 is integrally attached to this rotating gear 15, and a cartridge hand 17 is attached to the tip of the arm 16.
Magnets 18 are fixed to the tips of the cartridge hands 17, respectively.

With these configurations, when the motor 3 rotates, the worm wheel 6 rotates in the direction of arrow T.

The slider rack 7 moves in the direction indicated by the arrow, the gear A1o rotates in the direction indicated by the arrow T, the gear B13 rotates in the direction indicated by the arrow, and the rotating gear 15 rotates in the direction indicated by the arrow T. Rotating gear 15 is indicated by arrow T
By rotating in the direction, the arm 16, cartridge hand 17, and cartridge 19 also rotate in the direction of arrow T.

Next, control of the rotational direction of the motor 3 by turning on and off the inner and outer switches 20 and 21 will be explained.

6. The rotating gear 15 rotates in the direction of arrow T, and the car) IJ gear 1
When the disk abutting portion 191L of the rotary gear 15 is located on the outer periphery of the disk 22, the switch abutting portion 16& of the rotary gear 15 pushes the actuator 21& of the outer periphery switch 21, as shown in FIGS. 8 and 9. 21 is turned on (state B). However, the rotation direction of the motor 3 does not change, and the rotating gear 15 further rotates in the direction of arrow T. car) IJ
When the disk abutting portion 19 & of the edge 19 is positioned on the inner circumference of the disk 22, the switch abutting portion 16L of the rotary gear 15 pushes the actuator 20a of the inner circumferential switch 2o, turning on the inner circumferential switch 2o ( Condition C).

At this time, the outer peripheral switch is also in the on state. As a result, the rotational direction of the motor 3 is reversed, and the rotating gear 15, arm 16, cartridge hand 17, and cartridge 19 are rotated in the direction of arrow T'. Then, when the state B is reached again, the rotation direction of the motor 3 is reversed again. Note that between states B and C, as shown in FIG.
The surfaces of 27 and 7 come into contact with each other. After repeating these states B and 0 several times (set number of times), the switch contact portion 151L of the rotary gear 15 does not change the rotation direction of the motor 3 even when the outer switch 21 is turned on. 15 is further arrow T
’ direction.

At this time, the slider rack 7 moves in the direction of arrow L',
As shown in FIG. 7, when the switch contact portion 7a of the slider rack 7 presses the actuator 241 of the rest switch 24, the rest switch 24 is turned on and is in state A.
The rotation of motor 3 stops.

Problems to be Solved by the Invention However, with the above configuration, it is difficult to know how many times the same cartridge has been cleaned in the past.
Scratching the surface of the disc with a cartridge that has been cleaned many times and is extremely dirty may end up staining or scratching the disc surface, or removing the cartridge many times to avoid scratching the disc surface and dirt that may have adhered to the pad. The problem was that it was necessary to confirm the

In view of the above-mentioned problems, the present invention is designed to count the number of cleanings so that the cartridge can be replaced after a certain number of cleanings without having to remove the cartridge and check for dirt on the cartridge before starting cleaning each time. The present invention provides a disk cleaning device with the following features.

Means for Solving the Problems In order to solve the above problems, the disk cleaning device of the present invention includes a cleaning device that cleans the disk in contact with the surface of the rotating disk, and a device that drives the cleaning device while holding it. A drive means, a drive source, a transmission means for transmitting force from the drive source to the drive means, a detection means for detecting the positions of the drive means and the transmission means, and a detection output of the detection means to count and display the number of times of cleaning. and display means.

Function The present invention can count and display the number of times of cleaning due to the above-described configuration, so that when the predetermined number of times of cleaning has been reached, the cartridge of the cleaning means can be replaced easily, and even an extremely dirty cartridge can be replaced. This eliminates the possibility of staining or damaging the disc, and also eliminates the trouble of repeatedly removing the cartridge to check for dirt on the IJ.

Embodiment Hereinafter, a disk cleaning device according to an embodiment of the present invention will be described with reference to the drawings.

1 to 5 show an exploded perspective view and a plan view showing the operation of a disk cleaning device according to an embodiment of the present invention.

In Fig. 1, 1 is the base, 2 is the motor fitting, 3 is the motor, 4 is the worm, 6 is the worm wheel shaft, 6 is the worm wheel, 7 is the slider rack, 8 is the rail, 9 is the gear A shaft, 1o is gear person, 11 is fulcrum base,
12 is a shaft for gear B, 13 is gear B, 14 is a shaft for rotating gear, 15 is rotating gear, 16 is an arm, and 17 is a cart accessory.

18 is a magnet, 19 is a cartridge, 2o is an inner switch, 21 is an outer switch, 24 is a switch to the rest 10, 25 is a detection lever, 25 & is a detection lever 2
5 is a protrusion of the body, 26 is a lever shaft that rotatably supports the detection lever 25, 27 is a spring shaft fixed to the base 1, 28 is connected to the shaft 27 at one end, and the detection lever is at the other end. A spring 29 is fixed to the detection lever 26 at one end.
The rod 30 that is locked to is a counter, and the other end of the rod 29 is connected to the lever 30ia.

The operation of the disk cleaning device configured as described above will be described below with reference to FIGS. 2 and 3.

First, FIG. 2 shows the rest state (state D) of the disc cleaning device, FIG. 3 shows the state in which the disc contacting part of the cartridge 19 is located on the outer periphery of the disc 22 (state E), and FIG. FIG. 5 shows a state (state F) in which the disk contact portion 19 is located on the inner periphery of the disk 22, and FIG. 5 shows a state (state G) immediately before (or immediately after) the rest state.

State E from disk cleaning device state.

The cleaning operation from 11 to 7F and back to the original state is the same as the operation of the conventional disk cleaning device described above, so the explanation will be omitted.

When the slider rack 7 moves in the direction of arrow L' and is just before returning to the rest state (state G), the end surface of the slider rack 7 and the protrusion 252L of the detection lever 25 come into contact, and the slider rack 7 further moves in the direction of arrow L' It is detected by moving in the direction (-25 is the lever shaft 26ff fixed to the base 1: it rotates around the center. This causes the rod 2
9 moves in the direction of the arrow L' and pushes the lever part 30a of the counter 30 in the direction of the force of the arrow L'.
The number increases by one.

Note that when the slider rack 7 moves in the direction of the arrow and the detection lever 26 and the slider rack 7 do not come into contact with each other,
The detection lever 25 is always biased in the direction of arrow T by a spring 28 attached to a spring shaft 27 whose one end is fixed to the base 1. The detection lever 25 stops at a position where the forces pulling the detection lever 26 via the lever 29 are balanced.

As described above, according to the present embodiment, a disk (disc 22) on which a signal is recorded, a rotating means (motor 23) for rotating the disk, and a cleaning device that cleans the disk by contacting the surface of the rotating disk. cleaning means (cartridge 19, disk abutting part 19a), and driving means (rotating gear 15, arm 16, cart 1) that drives while holding the cleaning means.
position of the drive means (worm wheel 6, slider rack 7, gears 10, 13), the drive source (motor 3), the transmission means (worm wheel 6, slider rack 7, gears 10, 13) that connects with the drive means and transmits the force from the drive source. By comprising detection means (inner circumference switch 20, outer circumference switch 21, rest switch 24) for detecting the number of times of cleaning, and display means (detection lever 25, spring 28, rod 29, counter 30) for counting and displaying the number of times of cleaning. , the time to replace the cartridge 19 can be known by the display means, saving the trouble of removing the cartridge many times and checking for dirt on the cartridge 13
Beige can be used. By linking the moat display means to a part of the communication means, reliable input can be made, which also leads to cost reduction.

Effects of the Invention As described above, according to the present invention, by providing a count display means for the number of times of cleaning, it is possible to know when the cleaning means needs to be replaced without removing the cleaning means, and to remove dirty cleaning means. Therefore, it is possible to provide a device that can eliminate the risk of damaging the disk. By interlocking the display means with a part of the transmission means, the number of times of cleaning can be reliably inputted, and a special drive source for the display means is not required, thus providing a device with reduced cost and high productivity. can do.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a disc cleaning device according to an embodiment of the present invention, FIG. 2 is a plan view showing the same disc cleaning device in a rest state, and FIG. 3 is a plan view showing the outer periphery cleaning state of the same disc cleaning device. 4 is a plan view showing the inner circumferential cleaning state of the disk cleaning device on the same disk cleaning device; FIG. 5 is a plan view showing the disk cleaning device immediately before (or immediately after) the rest state; FIG. 6
The figure is an exploded perspective view of a conventional disk cleaning device.
FIG. 7 is a plan view showing the rest state of the disk cleaning device, FIG. 8 is a plan view showing the outer circumference cleaning state of the disk cleaning device, and FIG. 9 is a plan view of the rotating means and detection means in the disk cleaning device. FIG. 1Q is a plan view showing the inner circumferential cleaning state of the disk IJ + cleaning device, and FIG. 11 is a perspective view showing the relationship between the cleaning member and the disk. 3... Motor, 6... Worm wheel, 7... Slider rack, 10, 13.
... Gear, 15 ... Rotating gear, 16 ...
... Arm, 17 ... Cartridge hand, 19 ... Cartridge, 2゜ ... Inner circumference switch, 21 ... Outer circumference switch, 24 ...
...Rest switch, 25...Detection lever, 29...Rod, 3o...Counter. Figure 7 Figure 8 Figure 9 Figure 10 U-nor

Claims (1)

[Claims] a disk on which a signal is recorded; a rotation means for rotating the disk; a cleaning means for cleaning the disk by contacting the surface of the rotating disk; a driving means for driving the cleaning means while holding it; a driving source, a transmission means coupled to the driving means and transmitting force from the driving source, a detection means for detecting the positions of the driving means and the transmission means, and a detection output of the detection means used to detect the cleaning means. and a display means for counting and displaying the number of times the cleaning is performed.