JPS60219603A - Cleaning device - Google Patents

Abstract

PURPOSE:To obtain a sufficient cleaning effect by sliding a pickup stylus for reproducing an information recording medium in the radial direction passing nearly through the turning center of a cleaning member during rotation. CONSTITUTION:The pickup stylus 30 moves as shown in the arrow, and while the pickup stylus 30 slides on the cleaning member 20, the cleaning member 20 is turned and the pickup stylus 30 is in the relation of position so as to pass through nearly the turning center of the cleaning member 20. Thus, the pickup stylus 30 is cleaned in all direction by the cleaning member 20. Thus, the pickup stylus is wiped out from all directions by sliding the pickup stylus in the radial direction passing nearly through the turning center of the cleaning member and an excellent cleaning effect is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a leaning device which is effective for playback pickup needles used in information recording medium playback devices.

Conventional configuration and its problems In information recording medium playback devices that use a pick-up needle to pick up information from a disk-shaped recording medium, there is a high possibility that dust adhering to the pick-up needle will cause playback failures. The cleaning method is very important.

Hereinafter, a conventional cleaning device will be described with reference to the drawings. FIG. 1 shows a conventional cleaning device.

In the figure, 2 is a cleaner base, 4 is a rotating table, 6 is a cleaning member, 7 is a rotating shaft, 8 is a cleaner rod, and 10 is a torsion coil spring. 30 is the pick-up needle, 3
1 is a cantilever.

The rotating shaft 7 is press-fitted into the cleaner base 2, the rotating table 4 is inserted into the rotating shaft 7 with a small gap, and the cleaning member 6 is attached to the rotating table 4. The cleaner rod 8 is held by the cleaner base 2 and is in contact with the rotary table 4. The torsion coil spring 10 is in contact with the cleaner rod 8 and the cleaner base 2.

The operation of the cleaner configured as above will be explained below. The pick-up needle 30 moves as shown by the arrow in the figure, and after sliding on the cleaning peripheral member θ and removing dust, the cleaner rod 8 is moved by the side wall of the arm housing (not shown) that holds the pick-up needle 30. The rotating table 4 is slightly rotated by pushing the cylindrical part of the cylindrical part, and the sliding part with the pick-up needle 3° is changed at any time. Next, when the arm housing (not shown) moves in the opposite direction, the cleaner rod 8 is pushed back by the torsion coil spring 1o, but at this time, the cleaner rod 8 is separated from the rotary table 4 (not shown). Therefore, the turntable 4 always rotates in only one direction.

However, in the above-mentioned configuration, the cleaning member 6 is stationary when the pick-up needle 30 is cleaned, and the problem is that cleaning the pick-up needle 30 in only one direction is sufficient and no cleaning effect can be obtained. It had a point.

OBJECTS OF THE INVENTION An object of the present invention is to provide a cleaning device that can obtain a sufficient cleaning effect.

Structure of the Invention The cleaning device according to the present invention includes a rotatable cleaning member, and slides a pickup needle for reproducing an information recording medium in a radial direction passing approximately through the center of rotation of the rotating cleaning member. The pick-up needle for reproducing the information recording medium is wiped from all directions, and the cleaning effect can be improved.Description of an EmbodimentHereinafter, an embodiment of the present invention will be described with reference to the drawings. 2 is a perspective view of a cleaning device according to an embodiment of the present invention. In FIG. 2, 12 is a cleaner base, 14 is a double gear, 15 is a rotating shaft, 16 is a sector-shaped internal gear, 18 is a rotary table with a gear, 20 is a cleaning member, and 22 is a torsion coil spring. 30 is a pick-up needle and 31 is a cantilever.

Two rotating shafts 16 are press-fitted into the cleaner base 12, and a double gear 14 is rotatably inserted into one of the rotating shafts 16 with a slight gap between the small gear of the double gear 14 and the sector-shaped internal gear 16. The d-shaped internal gear 16 with its gear portions in mesh is rotatably supported by the other rotating shaft 16, and the other end is slidably supported by a support 17. A cleaning member 20 is attached to the geared rotary table 18, and the gears of the geared rotary table 18 and the large gear of the double gear 14 are in mesh with each other. The torsion coil spring 22 connects the fan-shaped internal gear 16 and the cleaner base 12.
, and elasticity is acting in the direction of the arrow.

The operation of the cleaning device of this embodiment configured as described above will be described below. Pick up needle 3
o moves as shown by the arrow in the figure, cleaning member 2o
At the same time, the cylindrical portion 16a of the sector-shaped internal gear 16 is pushed in the direction opposite to the biasing direction of the torsion coil spring 22 by the side wall of the arm housing (not shown) holding the pick-up needle 30 a little before contacting the pick-up needle 30. double gear 1
4 rotates, the speed is further increased, the geared rotating table 18 is rotated, and the cleaning member 2o is brought into a rotating state. In other words, while the pick-up needle 3o is sliding on the cleaning member 20, the cleaning member 2o is rotating. Further, the pickup needle 30 is positioned so as to pass approximately through the rotation center of the cleaning member 2o. Therefore, the pick-up needle 30 is cleaned from all directions by the cleaning member 20, and the cleaning effect is greatly improved. Next, when the arm housing (not shown) moves in the opposite direction, the sector-shaped internal gear 16 is pushed back by the torsion coil spring 22 and the cleaning member 2° is rotated again to clean the pickup needle 30 in the same manner.

As described above, according to this embodiment, the cleaning effect is improved by rotating the cleaning member 20 at a high rotation speed of more than SO rpm. Although the cleaning member 20 is rotated by using a motor, similar effects can be obtained by other configurations such as rotating by a motor.

In addition, when starting cleaning, in the relative movement between the pick-up needle and the information recording medium, if the side of the pick-up needle that faces the information recording medium is set as the running side, and the side that sends out is set as the running side, then during actual playback, dust will not run in. Easy to stick to the sides. It has been actually confirmed that the dust can be easily removed by wiping it from the running side.

Effects of the Invention As described above, according to the present invention, the cleaning member is rotated at high speed using the movement of the arm housing, and at the same time, the pickup needle is slid in the radial direction passing approximately through the rotation center of the cleaning member. By doing so, the pick-up needle can be wiped from all directions, resulting in an excellent cleaning effect.

Further, since the pick-up needle is slid in the diametrical direction of the cleaning member, the sliding length can be made the longest.

Furthermore, since the cleaning member wipes the pick-up needle in a tangential direction, no force is applied in an unreasonable direction to the cantilever holding the pick-up needle, resulting in extremely high safety.

The fan-shaped internal gear that converts the linear motion of the arm housing (not shown) into rotational motion also rotates around the rotation axis, and its movement is smooth, so there is no unnecessary load on the arm housing (not shown). It doesn't cost anything.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional cleaning device;
The figure is a perspective view showing a cleaning device in an embodiment of the present invention. 14...Double gear, 16...Sector internal gear, 18...Rotary table with gear, 20...
-Cleaning member, 30...Pick-up needle. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2! 6 Yu

Claims (1)

[Claims] (1) The information recording medium reproducing pick-up is equipped with a rotatable cleaning member, and the information recording medium reproducing pick-up needle is slid in a radial direction passing approximately through the center of rotation of the rotating cleaning member. A cleaning device that wipes the needle from all directions. (2!l) At the start of cleaning, the cleaning member is rotated in a direction generally opposite to the direction in which the information recording medium advances and rotates so as to slide on the pickup needle for reproducing the information recording medium. The cleaning device according to paragraph ('4) includes an arm housing that holds a pickup needle for reproducing an information recording medium, and a sector-shaped internal gear that rotates while contacting the arm housing, and converts the linear movement of the arm housing into a rotational movement. 3. The cleaning device according to claim 1 or 2, wherein the cleaning member is configured to rotate at a high speed by increasing the rotational speed.