JP3047545B2 - Disk cartridge cleaning structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge such as a floppy disk and a cleaning structure for wiping dust and the like adhered to the surface of a disk as a disk-shaped recording medium.

[0002]

2. Description of the Related Art Generally, a cleaning structure of a disk cartridge is, as shown in FIGS.
A pair of liners (cleaning sheets) 102, 102 sandwiching the front and back of
In order to lightly press the disc 102 against the front and back surfaces of the disc 101, the upper shell 1 constituting the cartridge case 103
The rib members 106... 106 (these rib members 106... 106 are formed at predetermined intervals along the rotation direction of the disk 101) and leaf springs disposed on the inner surfaces of the lower shell 105 and the lower shell 105. The liners 102, 102 are lightly pressed against the front and back surfaces of the disc 101 by the rib members 106... 106 and the lifters 107 to remove dust and the like adhering to the front and back surfaces of the disc 101. It is designed to be wiped.

[0003]

However, in the above-described conventional cleaning structure, the effect of wiping dust by the liner 102 was not sufficient.

[0004] Then, when the cause was investigated, the following became clear.

That is, in the conventional cleaning structure, as described above, a plurality of rib members 106 are arranged on the inner surface of the upper shell 104 of the cartridge case 103 at predetermined intervals along the rotation direction of the disk 101. As shown in FIG. 10, the liner 102 is pressed against the disc 101 at a portion corresponding to the tip of the rib members 106... 106, as shown in FIG. In the space between the two, the liner 102 is not sufficiently pressed against the disk 101, so that small gaps 108... 108 are formed between the liner 102 and the disk 101, and these gaps 108.
08, it was found that a sufficient dust wiping effect could not be obtained because the dust passed through.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a cleaning structure having an improved dust wiping effect.

[0007]

SUMMARY OF THE INVENTION A liner , a lifter having a predetermined bending angle disposed on an opposing surface of a cartridge case to press the liner against a disk, and
The case is provided with a rib member integrally formed, and the lifter and the rib member lightly press the liner against the surface of the disk to wipe off dust and the like adhering to the disk surface with the liner. In the cleaning structure for a disk cartridge, the rib material is substantially perpendicular to the rotation direction of the disk and the recording surface of the disk.
A dust wiping rib portion which is arranged within a range corresponding to the radius and linearly contacts the liner in the radial direction of the disc; and at least a disc portion of the dust wiping rib portion.
On both ends of the disc in the radial direction
It is connected so that it extends to both the upstream side and the downstream side ,
The liner was made up of ribs for preventing dust from coming into linear contact with the disk in the rotation direction.

[0008]

The ribs for the dust wiping rib member disposed substantially perpendicular to the direction of rotation of the working disk, the liner serial disk
Line contact is made without any gap in the recording surface radial direction, and dust and the like are wiped without leakage at the line contact portion.

Further, dust is wiped by line contact portion by the rib portion for the dust wiped, the move to the inner outward along a line contact portion to escape out from the line contact portion, the dust Liner with dust escaping ribs connected to at least both ends of the wiping ribs in the radial direction of the disk
And by the contact portion of the disk .

[0010]

1 to 5 show a cleaning structure according to the present invention.
This will be described with reference to FIG. FIG. 1 shows a disk cartridge 1 provided with the cleaning structure of the present invention.

The disc cartridge 1 has a disc 2 having a signal recording surface on a lower surface side, a cartridge case 3 for rotatably housing the disc 2, and a shutter 4 slidably mounted on the cartridge case 3. And a shutter spring 5 for maintaining the shutter 4 in a closed state. The disk cartridge 1 has liners 12, 12 arranged on the upper and lower surfaces thereof so as to sandwich the disk 2. In order to lightly press these liners 12, 12 against the disc 2,
A cleaning structure 11 including a rib member 13 and a lifter 14 arranged on the opposing surface of the cartridge case 3
Is given.

As shown in FIG. 2, the rib member 13 is provided with dust particles disposed substantially at right angles to the rotation direction of the disk 2 so as to bring the liner 14 into linear contact with the disk 2 in the radial direction. Wiping unit 15 and liner 1
4 in the direction of rotation of the disk 2 so as to bring the ribs 4 into linear contact with the direction of rotation of the disk 2.
At least it is composed of a rib portion 16 for dust escape prevention is provided continuously to both end portions in the radial direction of the disk in.

Before describing the cleaning structure 11 of the present invention, the disk cartridge 1 will be described first.

The disk 2 is formed of a flexible polymer material in a disk shape, has a signal recording surface provided on a lower surface thereof, and has a center hub 15 attached to a central portion thereof.

The cartridge case 3 is divided into an upper shell 3a and a lower shell 3b. The upper shell 3a and the lower shell 3b are made of a hard polymer material. Opposing portions on one side are provided with openings 3c, 3c for introducing a head and the like. A hub receiving hole 3d for exposing the center hub 15 is provided in the center of the shell 3b. The liners 12, 12 are attached to the inner surfaces of the upper shell 3a and the lower shell 3b. The disk 2 is sandwiched between the liners 12, 12, and provided on the peripheral edge of the upper shell 3a and the lower shell 3b. By overlapping a part of the peripheral wall 3e with each other and welding them together,
A cartridge case 3 is formed.

The shutter 4 has an end plate 4a and a pair of opposing pieces 4b, 4c provided at both ends of the end face plate 4a in a U-shaped cross section. A cutout 4d is provided on one side, and a non-cutout 4e is provided on the other side.

The end face plate 4a and a pair of opposing pieces 4b,
4c is formed by bending a metal plate into a U-shaped cross section.

Then, one end of the cartridge case 3 is inserted from the opening end opposite to the end face plate 4a, and the shutter slide guide groove 21 provided in the lower shell 3b of the cartridge case 3 is inserted into one of the opposing sides of the shutter 4. The shutter 4 is slidably mounted in the shutter mounting recess 3f of the cartridge case 3 by inserting a so-called cut-and-formed sliding guide protrusion 22 into the peripheral edge of the notch 4d of the piece 4c. When the recess 3f is located on one side 3g side, the opening 3c is closed by the non-cutout portion 4e.
When it is located on the h side, the notch 4d overlaps the opening 3c to open the opening 3c.

A torsion coil spring is used as the shutter spring 5, and the shutter spring 5 is inserted into a spring accommodating portion 24 from a spring insertion portion 23 provided on one side of the lower shell 3b of the cartridge case 3. The shutter 4 is mounted in the spring accommodating portion 24 and the shutter 4 is
The shutter 4 is pressed against one side 3g to keep the opening 3c closed.

Next, the cleaning structure 11 will be described.

The liners 12, 12 are non-woven cloth (felt)
Made of.

The liners 12, 12 are attached to the inner surfaces of the upper shell 3a and the lower shell 3b, respectively, with a part of the liners 12 adhered, and sandwich the upper and lower surfaces of the disk 2. ing.

The lifter 14 is formed by punching a stainless steel plate having a thickness of 50 μm or a synthetic resin film having a thickness of about 100 to 200 μm and bending the same at a predetermined inclination angle.

The lifter 14 has a fixed portion 14a at one end fixed to the inner surface of the lower shell 3b, and presses the liner 12 against the disk 2 at a free end 14b at the other end.

The rib member 13 is formed of plastic integrally with the upper shell 3a at a predetermined position on the lower surface of the upper shell 3a where the pressure of the lifter 14 acts most strongly.

The dust wiping ribs 15 of the dust wiping ribs 15 and the dust escaping ribs 16 constituting the rib material 13 are arranged in the radial direction of the signal recording surface of the disk 2. It is formed with a length commensurate with the recording surface radius, and with a predetermined height and thickness.

Also, rib portions 16... 16 for preventing dust from escaping.
The ribs 15 are formed between both ends of the dust wiping rib 15 and between the both ends so as to extend both upstream and downstream in the rotation direction of the disk 2 around the rib 15. In addition, the rib portion 16 for preventing dust from escaping is
Dust wiping ribs 15 are provided at both ends in the radial direction of the disk.
Only, and the rib between these two ends can be omitted.
No. By doing so, the rib portion 16 for preventing dust from escaping and
The friction between the disks 2 can be reduced.

Since the cleaning structure of the embodiment has the structure as described above, the rib portion 15 for wiping the dust is used.
The liner 12 makes linear contact with the radial direction of the disk 2 and the rotational direction of the disk 2 by the ribs 16.

The dust adhering to the signal recording surface of the disk 2 is wiped without leakage by the line contact portion of the liner 12 in the radial direction of the disk 2 by the dust wiping rib portion 15, and the disk 2 is cleaned. The dust that has been wiped by the radial line contact portion is continuously connected to the line contact portion by the dust escape preventing rib portions 16... 16 extending in the rotation direction of the disk 2 from the radial line contact portion. It is in a state of being enclosed between, preventing the escape of dust.

[0030]

As described above, the present invention has a liner and a predetermined bending angle arranged on the opposite surface of the cartridge case to press the liner against the disk.
And a rib material integrally formed with the case. The lifter and the rib material lightly press the liner against the surface of the disk, and wipe off dust and the like adhering to the surface of the disk with the liner. In the cleaning structure of the disk cartridge, the rib material is substantially perpendicular to the rotation direction of the disk , and
A dust wiping rib portion arranged in a range corresponding to the recording surface radius of the disc and linearly contacting the liner in the radial direction of the disc; and a dust wiping rib portion.
Dust that is provided at least at both ends in the radial direction of the disk so as to extend both upstream and downstream in the rotation direction of the disk, and that makes the liner linearly contact the rotation direction of the disk. Since it is composed of a rib portion for preventing the dust, the dust portion for wiping the dust is wiped by the rib portion for wiping the dust, and the scattered dust is prevented from being scattered. The prevention by the rib portion has an effect that the effect of cleaning the disk can be further improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a disk cartridge provided with a cleaning structure of the present invention.

FIG. 2 is a perspective view of a rib member.

FIG. 3 is a plan view of a disk cartridge provided with the cleaning structure of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is an exploded perspective view of a disk cartridge provided with a conventional cleaning structure.

FIG. 7 is a plan view of a disk cartridge provided with a conventional cleaning structure.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a sectional view taken along line BB of FIG. 7;

FIG. 10 is an enlarged view of FIG. 8;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc cartridge, 2 ... Disk, 3 ... Cartridge case, 11 ... Cleaning structure, 12 ... Liner, 13 ... Rib material, 14 ... Lifter, 15 ... Rib part for wiping dust, 16 ... Rib for preventing dust from escaping Department.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-270080 (JP, A) JP-A-63-24771 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 23/033 102 G11B 23/50

Claims (1)

(57) [Claims] 1. A liner and, where the liner is disposed on the opposing surface of the cartridge case so pressed against the disk
Integrated with lifter and case with constant bending angle
Formed rib material, wherein the rib material is substantially perpendicular to the rotation direction of the disc ,
And a rib portion for dust wiping arranged in a range corresponding to the recording surface radius of the disk to linearly contact the liner in the radial direction of the disk , and at least the disk of the dust wiping rib portion At both ends in the radial direction of the disc , extending both upstream and downstream in the direction of rotation of the disc .
Sea urchin have been continuously provided, cleaning structure of the disk cartridge, characterized in that is constituted by the rib portion for the dust escape prevention to line contact with the liner in the direction of rotation of the disk.