JPS6220188A - Cleaning device for information recording disc - Google Patents

Abstract

PURPOSE:To uniformly clean the recording plane of a disc along the radial direction automatically without any irregularity by providing a cleaning component abutting a part of the rear surface of the disc placed on a turntable and a ring mechanism which converts the rotating motion of a motor into the reciprocating movement of the cleaning component. CONSTITUTION:When a lid case 2 is closed, the disc 63 is pressed downward by a center component 64 attached to the rear surface of the lid case 2, the turntable is also lowered, and a switch operating lever 51 as well is lowered, and further a microswitch 55 is depressed to start a timer. With the starting of the timer, the motor 34 rotates to turn the turntable 6. At the same time, by the turning of a rotary lever component 41, a crack lever 42 attached to the other end of its is operated. Because of the reciprocating movement of a supporting base 43, the cleaning component 48 mounted on the upper surface of the said base 43 cleans the recording plane of the disc 63 straight from the outer periphery to the inner periphery and vice versa.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a cleaner for cleaning the recording surface of a disc on which information is digitally recorded, such as a compact disc or a laser disc. The present invention relates to a cleaning device for an information recording disk that cleans the recording surface of the disk by rotating the disk and using the drive source to linearly reciprocate the cleaning member in the radial direction on the recording surface of the disk.

[Technical Background of the Invention] Compact discs and laser discs, which reproduce images and sounds by converting information signals recorded in a disc using a laser beam spot, are widely used.

Since the pickup does not make mechanical contact with the recording surface of such a disc, it can be played back semi-permanently in normal use without deteriorating its performance. However, if dirt, fingerprints, or other dirt adheres to the recording surface due to long-term use, the image quality and sound quality will deteriorate. Therefore, it is necessary to keep the surface of the disc as clean as possible. The disk is generally cleaned by wiping it with a soft cloth such as chamois leather. When wiping again,
If the disk is wiped circumferentially, it may be scratched by dust or the like, and such scratches will result in carrier flying during playback, so wiping in the radial direction is required. However, in the case of hand wiping, there are sensory factors involved, and there are differences in how often and unevenly the wiping is done depending on the person.

[Objective of the Invention] An object of the present invention is to provide an electric cleaning device that eliminates the trouble of manual wiping as described above and automatically and evenly cleans the recording surface of a disk evenly in the radial direction. be.

[Structure of the Invention] The information recording disc cleaning device of the present invention includes a case body, a lid body that covers the upper part of the case body, and a turntable that holds the disc horizontally on the upper surface of the case body and rotatable about its axis. and a motor that rotationally drives this turntable, and a motor that is attached to the case body so as to be movable horizontally in the radial direction from the outer circumference to the inner circumference of the disk, and comes into contact with a part of the back surface of the disk placed on the turntable. The cleaning member is characterized by having a ring mechanism connected to the drive source and the cleaning member and converting the rotational motion of the motor into reciprocating motion of the cleaning member.

[Example 1] An example of the present invention shown in one drawing will be described below. In this embodiment, the information recording disk is a compact disk.

The cleaning device includes a rectangular box-shaped base case 1,
It has a lid case 2 which covers the upper surface of the base 1 and whose one end is pivotably supported by the base case 1.

The base case 1 has a hollow portion formed inside by four side plates 3, a top plate 4, and a bottom plate 5. An opening lower portion is formed in the center of the upper plate 4 to expose the turntable 6.

A recess 8 is formed in a portion of the upper plate 4 of the open lower portion and extends outward in the diametrical direction of the open lower portion. Two parallel long grooves 11 are formed in the bottom 9 of the recess 8 of the compact desk.
It extends along the

As shown in detail in FIG. 4, the turntable 6 has a hollow cylindrical body 12 formed below its axis. Inside this cylindrical body 12 is a first hole 13 coaxially with one end open at its lower end, and the upper and lower ends of this first hole 13 coaxially communicate with each other, with a diameter smaller than that of the first hole 13. A second hole 14 is provided.

The upper end of the second hole is closed by a turntable 6. The cylindrical body 12 is also provided with slits 15 extending in the axial direction at both ends in the diametrical direction of the cylindrical body 12, as shown in FIG. A support shaft member 16 is provided such that its upper end fits into the first and second holes 13.14 of the cylindrical body 12. The support shaft member 16 has a second hole 1 at its axial tip.
4, and its axial length is shorter than that of the second hole 14. The small diameter portion 17 of the support member 16 has a hole whose upper end is open, and one end of a coil spring 18 is inserted into this hole. The upper end of the coil spring 18 comes into contact with the lower end of the turntable 6, and always elastically presses the table 6 upward. A slit 15 of the cylindrical body 12 is provided on the outer periphery of the support shaft member 16.
A pair of protrusions 19 are formed that fit loosely into each other.

The support shaft member 16 is coaxially supported at the upper end of a support rod 21 that is coaxial with the axis of the turntable 6 .

The lower end of the support rod 21 is connected to a shaft support 22 formed on the bottom plate 5.
is rotatably mounted on the A gear 23 for driving a turntable is coaxially attached to the support rod 21.

The gear 23 meshes with a small gear 24 of a composite gear 26 in which a small gear 24 and a large gear 25 are integrally provided on the same axis. This composite gear 26 is coaxially attached to a support rod 28 that is rotatably supported perpendicularly to the bottom plate 5 by a shaft support 27. The large gear 25 of the composite gear 26 meshes with a worm gear 29, as shown in FIG. The worm gear 29 is coaxially attached to one end of a support shaft 32 that is horizontally and rotatably supported by a bearing 31 with respect to the bottom plate 5 . A pulley 33 is attached to the other end of this support shaft 32. This pulley 33 is interlocked with a pulley 36 attached to a drive shaft 35 of a motor 34 by an endless belt 37.

One end of the one-rotation bar 41 is fixed to the upper end of the support rod 28. One end of a crank bar 42 is pivotally attached to the other end of the rotating bar member 41 . The other end of the crank par 42 is pivotally attached to a central portion 44 of the cleaning par 1 to the support base 43, as shown in FIG. The cleaning bat support stand 43 has an upper guide part 45 whose upper end part fits into and protrudes into a long groove 11 provided in the bottom part 9 of the recess 8 of the upper plate 4, and an upper guide part 45 that extends over the bottom hole 5 so as to face the long groove 11. The lower guide portion 47 is provided so as to straddle a guide rail 46 which extends in the same direction as the long groove 11. The upper and lower guide parts 45 , 47 are integrally connected by the central part 44 . A cleaning pad 49 having a cleaning material 48 such as a chamois applied to the upper surface is attached to the upper end of the upper guide portion 45 protruding from the bottom portion 9.

A switch operating lever 51 is provided so that the lower end of the outer periphery of the turntable 6 comes into contact with one end thereof. This lever 51 is supported by a support rod 53 that is attached to a bottomless support base 52 so as to be movable up and down. The operating lever 51 is constantly pressed upward by a spring 54, and as the turntable 6 descends, the switch operating lever 51 also descends, and the other end of the lever 51 comes into contact with the micro switch 55, turning this switch on. Make it.

The microswitch 55 is attached to a printed board 56 having an electrical control circuit and a timer (not shown) that is turned on for a predetermined period of time when the switch 55 is operated.

The lid case 2 has four side plates 61 and a top plate 62,
At the center of the upper plate 62, a center member 64 that presses the disk 63 is elastically supported by a spring 65.

The structure of this lid case 2 is the same as that of a conventional player, so a detailed explanation will be omitted. In addition, 66 in FIG. 2 is a power supply battery compartment.

Next, the operation of this cleaning device will be explained. First, the lid case 2 is opened, the compact disc 63 is placed on the turntable 6 with its playback surface facing downward, and the lid case 2 is closed again. As a result, the disk 63 is pressed downward by the center member 64 attached to the back surface of the lid case 2, as shown in FIG. therefore,
The turntable 6 is also pushed down, and as a result,
The switch operating lever 51 is also lowered, and the micro switch 5
Press 5 to establish continuity and operate the timer. The motor 34 rotates due to the operation of the timer, and the rotation is caused by the pulley 36.
, the endless belt 37, and the pulley 33 to rotate the worm gear 29. Since the worm gear 29 meshes with the large gear 25 of the composite gear 26, the composite gear 26 also rotates. By means of the pulleys 33, 36 and the worm gear 29, the rotation of the motor 34 is transmitted to the compound gear 26 at a considerably reduced speed. Since the small gear 24 of this composite gear 26 is meshed with the drive gear 23 of the turntable 6, the crank lever 42 attached to the other end is rotated at the same time as the turntable 6 is rotated. In Figure 2, it is pulled downward,
When the rotating bar member 41 is rotated 180 degrees from the position shown in FIG. 2, the crank lever 42 is pulled to its maximum extent. Since the other end of the crank lever 42 is pivotally attached to the cleaning bat support 43, the support 43 is pulled towards it. Since the cleaning bat support base 43 straddles the guide rail 46 that is linearly arranged from the outer peripheral end to the inner peripheral end of the disk 63, the support base 43 is moved to the second position as the crank lever 42 moves. When the rotary bar member 41 rotates 180 degrees from the position shown in the figure, it is positioned near the turntable 6. As the rotary bar member 41 continues to rotate further from the 180 degree rotated position, the support base 43 returns from the vicinity of the turntable 6 toward the outer peripheral end of the disk 63.

By such reciprocating movement of the support base 43, the support base 43
The recording surface of the disk 63 is cleaned linearly from the outer circumference to the inner circumference and from the inner circumference to the outer circumference by the cleaning material 48 attached to the upper surface. gear 23
By making the length of the rotating bar member 41 shorter than the diameter of the rotary bar member 41, the time required for the cleaning material 48 to reciprocate can be shortened compared to the time required for one rotation of the turntable 6. By.

Even if the turntable 6 is continuously rotated, the cleaning material 48 substantially cleans the disk 63 linearly from the outer circumference to the inner circumference. The motor 34 stops driving after a predetermined time has elapsed due to the timer.
At that point, open the lid case 2 and clean the cleaning disc 6.
All you have to do is take out 3.

[Effects of the Invention] As described above, the cleaning device of the present invention rotates the turntable multiple times for a predetermined period of time by placing the disk on the turntable and closing the lid case, and simultaneously sprays the cleaning material. The disk is reciprocated many times almost linearly from the outer circumference to the inner circumference. Therefore, the entire surface of the disk can be completely cleaned without leaving any residue. Since the cleaning bat with the cleaning material provided on the upper surface is exposed on the upper plate 4, although not shown, if the cleaning bat is fixed to the upper guide member by sliding fit or screwing, Dirty cleaning materials can be easily converted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the cleaning device of the present invention, FIG. 2 is a plan view with the lid case removed from FIG. 1 and a part of the top plate cut away, and FIG. A- in Figure 2
FIG. 4 is a sectional view taken along line A, FIG. 4 is a sectional view showing the turntable section, and FIG. 5 is a side view showing a fitting portion between the cylindrical body and the support shaft member. In the drawing, 1 is a base case, 6 is a turntable,
11 is a long groove, 12 is a cylindrical body, 16 is a support shaft member, 18 is a coil spring, 23, 24, 25 is a gear, 29 is a worm gear, 34 is a motor, 41 is a rotating bar member, 42
48 is a crank bar, 48 is a cleaning material, 49 is a cleaning vat, 51 is a switch operation lever, and 55 is a micro switch. Patent applicant Audio Technica Co., Ltd. Agent Patent attorney Takuya Ohara Figure 1 Figure 4 cS Ukodo 22 27

Claims (2)

[Claims] (1) A disk cleaning device on which information is digitally recorded, comprising a case body, a lid covering the upper part of the case body, and a disk that is horizontal to the upper surface of the case body and aligned with its axis. a turntable that is rotatably held; a motor that rotationally drives the turntable; and a motor that is attached to the case body so as to be movable horizontally in the radial direction from the outer periphery to the inner periphery of the disk, and placed on the turntable. a cleaning member that comes into contact with a part of the back surface of the disk that has been cleaned; and a link mechanism that is connected to the drive source and the cleaning member and converts rotational motion of the motor into reciprocating motion of the cleaning member. A cleaning device for information recording disks. (2) In claim (1), the turntable is supported so as to be movable up and down in its axial direction, and is always elastically pressed upward by an elastic member, and the lower surface and one end of the turntable are An operating member that engages and is always elastically pressed upward; a switch device that engages with the lower end of the operating member when it descends and becomes conductive; and a switch that becomes non-conductive when not engaged; A cleaning device for an information recording disk, further comprising a timer for driving the motor for a predetermined period of time when the device is turned on.