JPH0542042B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rotation support device used in a cleaning device for a disc-shaped information recording medium.

BACKGROUND OF THE INVENTION In a device in which reproduction is performed by a reproduction needle that comes into sliding contact with an information recording medium on which various information signals are recorded,
In particular, in a method (hereinafter referred to as capacitance method) in which an electrode is provided on a reproducing needle and the reproducing needle is scanned along the recording trajectory of an information recording medium to read the information signal as a change in capacitance (hereinafter referred to as the capacitance method), the information is It is required that the signal surface on which the signal is recorded be in close contact with the sliding surface of the reproducing needle electrode. Even if a minute gap occurs, it becomes impossible to satisfactorily detect a change in capacitance corresponding to an information signal recorded on an information recording medium.

One of the causes is that dust in the air is interposed as a foreign substance between the signal surface and the reproduction needle slide contact surface.

Therefore, various cleaning devices for cleaning the information recording medium have been proposed in order to maintain uniform contact between the information recording medium and the reproducing needle.

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

FIG. 2 shows a side view of a conventional information recording medium cleaning device. In FIG. 2, 18 is the main body, 6 is the rotation drive unit, 2 is the cleaning member, and 4 is the main body.
1 is a double-sided tape for fixing the cleaning member 2 to the rotary drive unit 6; 10 is a slider to which the rotary drive unit 6 is attached and can be moved up and down; 14 is a sliding shaft; 12 is a coil spring for adjusting the pressing force; 20 is a shaft nut, 20 is a positioning pin, 24 is an information recording medium, and 22 is a transfer table.

FIG. 3 is a sectional view of the rotary drive unit 6. In FIG. 3, reference numeral 8 indicates a rotation axis of the rotation drive unit 6. As shown in FIG.

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

As shown in FIG. 2, the information recording medium cleaning device mounted on the transfer table 22 supports a rotation drive section 6, and the cleaning member 2 is attached to the rotation drive section 6 with double-sided tape 4.

The cleaning member 2 is an information recording medium 24 on which a transfer table 22 equipped with an information recording medium cleaning device rotates.
When it moves to the top, it comes into contact with the information recording medium 24. In the above state, the rotary drive unit 6 is attached in an inclined state at a predetermined angle with respect to the perpendicular direction of the surface of the information recording medium 24.
When a part of the cleaning member 2 comes into contact with the surface of the information recording medium 24 due to the pressing force defined by the coil spring 12, a frictional force is generated between the two.
The rotation drive unit 6 rotates, and the cleaning member 2 attached to the rotation drive unit 6 comes into contact with the information recording medium 24 while rotating.

In the above state, the entire surface of the information recording medium 24 can be cleaned by reciprocating the transfer table 22 equipped with the information recording medium cleaning device between the outermost and innermost portions of the information recording medium 24. becomes.

Problems to be Solved by the Invention However, in the above configuration, when the cleaning member 2 becomes dirty and needs to be replaced, the double-sided tape 4 must be removed together with the rotating shaft 8 and the rotating drive unit 6. , an unreasonable force is applied to the slider 10, etc., and the rotation of the rotary drive unit 6 is adversely affected.

Furthermore, when attaching a new cleaning member 2 to the rotary drive unit 6, the position may shift or the cleaning member 2 may be touched with bare hands, so dust and
It had the problem that oil etc. easily adhered to it.

In view of the above-mentioned problems, the present invention provides a rotation support device for an information recording medium cleaning device in which the cleaning member can be easily replaced.

Means for Solving the Problems In order to solve the above-mentioned problems, the rotation support device of the present invention includes a rotation table provided with a bearing section, a shaft member supporting the rotation table for rotation, and an elastically deformable rotary support device. and a replacement member having a locking pawl, and the replacement member is coupled to the rotary table by the locking pawl so that the replacement member rotates integrally with the rotary table. .

Function: This structure makes it easy to replace the cleaning member and allows cleaning to be performed under optimal conditions using a new cleaning member.

Embodiment A rotation support device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a side sectional view of a rotation support device of an information recording medium cleaning device in an embodiment of the present invention.

In FIG. 1, reference numeral 5 denotes a disc-shaped cleaning member holder that constitutes a replacement member, 5a a protrusion integral with the cleaning member holder 5, and 5b an engagement part integrally provided with the cleaning member holder 5. 2 is a cleaning member; 4 is a double-sided tape for fixing the cleaning member 2 to the cleaning member holder 5; 6 is a cleaning member holder 5;
10 is a slider to which the rotation drive unit 6 is attached and can be moved in the vertical direction; 8 is a rotation shaft that is a shaft member of the rotation drive unit 6. .

The operation of the rotation support device for the information recording medium reproducing apparatus constructed as described above will be described below with reference to FIG. 1.

In FIG. 1, a cleaning member 2 is fixed to a cleaning member holding portion 5 with double-sided tape 4. As shown in FIG.

Two locking pawls 5b are integrally formed on the cleaning member holding portion 5, and these locking pawls 5b are adapted to fit into the rotation drive portion 6.

Further, two protrusions 5a are integrally formed in the cleaning member holding portion 5 near the base of the locking claw 5b, so that fingers can be hooked thereon during attachment and detachment.

With the above configuration, the rotational precision of the rotational drive section 6 relative to the slider 10 is maintained as before, and at the same time, the cleaning member 2 with respect to the rotational drive section 6 can be reliably applied with rotational force by the cleaning member holding section 5 as before. Reportedly. The cleaning member 2 can always be easily replaced with a new one by attaching and detaching the cleaning member holding portion 5.

Effects of the Invention As described above, the present invention can eliminate excessive force from being applied to the rotating shaft, rotational drive unit, slider, etc. when replacing the cleaning member, and the cleaning member can be moved eccentrically to the rotational drive unit. In addition, it is possible to eliminate the need to directly touch the cleaning member with bare hands.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a rotation support device of an information recording medium cleaning device according to an embodiment of the present invention, FIG. 2 is a sectional view of a conventional information recording medium cleaning device, and FIG. 3 is a rotation support device of FIG. 2. FIG. 2 is a cross-sectional view of the device. 2...Cleaning member, 5...Cleaning member holding section, 6...Rotation drive section, 8...Rotation shaft.

Claims (1)

[Scope of Claims] 1. A rotating table including a bearing portion, a shaft member that supports the rotating table so as to rotate, and a replacement member having an elastically deformable locking pawl, the replacement member A rotary support device, characterized in that the rotary support device is configured to be connected to the rotary table by the locking pawl so as to rotate integrally with the rotary table. 2. A protrusion is provided near the base of the locking claw of the replacement member, and the replacement member and the rotary table can be attached and detached by pinching the protrusion. The rotational support device according to scope 1. 3. The rotation support device according to claim 1, wherein a cleaning member for a disk-shaped information recording medium cleaning device is attached to the replacement member.