JP3185316B2 - Disk-shaped data recording device - 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-shaped data recording device such as a floppy disk.

[0002]

2. Description of the Related Art As a disk-shaped data recording device, for example, there is a 3.5-inch floppy disk.

FIG. 10 is an exploded perspective view of the floppy disk 13.

In FIG. 10, 1 is an upper shell (upper cover member), 2 is a center plate, 3 is a liner (disc cleaning member), 4 is a metal hub (center core), and a hole 4A is formed in the metal hub 4. Have been. 5 is an adhesive ring, 6 is a magnetic sheet (disk-shaped data recording sheet), 7 is a liner (disk-shaped cleaning member), and 8 is a lower shell (lower lid member).
Reference numeral 9 denotes a lifter, 10 denotes a write protector, 11 denotes a shutter, and 12 denotes a shutter spring.

[0005] In the above-mentioned floppy disk 13, the liners 3 and 7 have fibers of polypropylene, polyester, rayon, or the like mixed alone or in an appropriate ratio. The mixed fibers are bonded to each other by a binder or heat fusion.
The liners 3 and 7 have a function of contacting the magnetic sheet 6 and wiping dust and the like attached to the surface of the magnetic sheet 6.

[0006]

By the way, as described above,
The liners 3 and 7 are bonded to the upper shell 1 and the lower shell 8 by heat fusion, respectively.

When the floppy disk 13 is to be recovered and reproduced due to some inconvenience (for example, a defective product is generated during the manufacturing process), it is necessary to separate the liners 3 and 7 from the upper shell 1 and the lower shell 8. is there.
However, the liners 3 and 7 have low mechanical strength in terms of their functions, and the liners 3 and 7 have low mechanical strength.
Was thermally fused to the upper shell 1 and the lower shell 8, so that it was difficult to separate them easily. Therefore, it is difficult to reproduce and use the floppy disk 13,
This was an obstacle to resource saving.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk-shaped data recording apparatus in which a disk-shaped cleaning member is securely fixed to an upper lid member (lower lid member) while a disk-shaped cleaning member is moved from an upper lid member (lower lid member). Of the disk-shaped data recording device.

[0009]

Configuration of disk-shaped data recording apparatus according to claim 1 for achieving such object, according to an aspect of the upper cover member, and the lower lid member, and said upper lid member and the lower lid member a disk-shaped data recording sheet disposed between, in the disk-shaped data recording apparatus having a disk-like cleaning member disposed on the inner surface of the inner surface side and the lower lid member of the upper lid member, wherein the cleaning member is an upper layer side in contact with the disk-shaped data recording sheet has a density of 0.1 to 0.3 g / cm ^3, before
Serial lid member or side joined to the lower lid member 0.3g
The chestnut with are configured in a multilayer structure having at least two layers of a lower layer having / cm ³ or more density
The cleaning member has a plurality of peripheral portions of the cleaning member.
The disc-shaped data recording device according to claim 2, wherein a portion is joined to the upper lid member and the lower lid member.
Consists of mixed fiber containing 50% to 80% rayon,
A resin is coated as the lower layer and solidified into a film.
And characterized in that a multi-layer structure with reduction, the configuration of the disk-shaped data recording apparatus according to claim 3, wherein the upper layer according to claim 1,混毛fibers comprising rayon 50% to 80%
The lower layer is a film made of polypropylene
The disk-shaped data recording apparatus according to claim 4 , wherein the upper cover member, the lower cover member,
Disc-shaped disposed between the upper lid member and the lower lid member
A data recording sheet, an inner surface side of the upper lid member and the lower side;
Disk-shaped cleaning unit arranged on the inner surface side of the lid member
And a disk-shaped data recording device having
The cleaning member is a disk-shaped data recording sheet.
The surface side that comes in contact with the target has a density of 0.1 to 0.3 g / cm ³
Having an upper layer and joining the upper lid member or the lower lid member.
A lower layer whose surface side has a density of 0.3 g / cm ³ or more;
In a multilayer structure in which a conductive layer is formed between the upper layer and the lower layer
And the cleaning member is
A plurality of locations on the periphery of the cleaning member may be the upper lid member.
And the lower lid member is joined to the disk-shaped data recording device according to claim 5, wherein the conductive layer according to claim 4, wherein the conductive layer is deposited on the lower layer.
Indium oxide or metal laminated on the lower layer
It is a plated fiber .

[0010]

The density of the layer on the surface joined to the upper lid member or the lower lid member of the disk-shaped cleaning member is 0.3 g / cm ³ or more, and the mechanical strength is high. Accordingly, when the cleaning member is thermally fused to the upper lid member or the lower lid member, even if the upper lid member (lower lid member) is melted, penetration into the cleaning member is avoided. Therefore, the cleaning member can be easily removed from the upper lid member or the lower lid member.

[0011]

FIG. 1 is a partial sectional view of a liner 28 in a floppy disk 13 according to an embodiment of the present invention.

In FIG. 1, reference numeral 27 denotes a density of 0.1 to 0.3.
g / cm ³ , and the upper layer 27 is a magnetic sheet.
(A disk-shaped data recording sheet) . The upper layer portion 27 is made of, for example, 75% rayon and 25% polypropylene, or 50% rayon and PE
T50%. Further, the upper layer 27
May be 80% rayon and 20% nylon. Reference numeral 14 denotes a film layer (lower layer portion) made of, for example, polypropylene, and the density of the film layer 14 is 0.3.
g / cm ³ or more. Then, the film layer 14 is thermally fused to the upper shell or the lower shell.

The upper layer portion 27 and the film layer 14 may be partially joined by a number of heat-sealed portions 15 as shown in FIG. 2 or may be joined by a method as shown in FIG. Good. That is, in FIG. 3, the adhesive 20 is applied to the surface of the film layer 14 fed from the roller 16. Then, the film layer 14 coated with the adhesive and the roller 1
7 and rollers 18A and 1
8B. The joined upper layer portion 27 and film layer 14 are wound around a roller 19.

As described above, according to one embodiment of the present invention, the density of the layer on the side of the liner 28 that contacts the magnetic sheet is 0.1 to 0.3 g / cm ^3, and the upper shell of the liner 28 is Alternatively, the density of the layer on the surface side to be joined to the lower shell is 0.3 g / cm ³ or more. Therefore, the floppy disk 13 can be easily separated from the upper shell or the lower shell while the fixing to the upper shell or the lower shell is facilitated without impairing the wiping function for the magnetic sheet, and the recycling of the floppy disk 13 is facilitated.

FIG. 4 is a partial sectional view of a liner 29 in a floppy disk 13 according to another embodiment of the present invention.

In the figure, reference numeral 27 denotes an upper layer portion similar to that of the example of FIG. 1, and reference numeral 21 denotes a film layer similar to the film layer 14 of FIG. On the surface of the film layer 21 , for example, an indium-based oxide is deposited to form a conductive layer 22. The conductive layer 22 and the upper layer 27 are adhered by an adhesive 23. The conductive layer 22 prevents charging due to friction between the upper layer portion 27 and the magnetic sheet.

As described above, according to the example of FIG. 4, the same effect as that of the example of FIG. 1 can be obtained, and further, the effect of preventing static electricity can be obtained.

FIG. 5 is a partial sectional view of a liner 30 according to still another embodiment of the present invention.

In FIG. 2, reference numeral 27 denotes an upper layer portion similar to that of the example shown in FIG. 1, and reference numeral 24 denotes a high-density layer made of a high-density nonwoven fabric having a density of 0.3 g / cm ³ or more.

In the example of FIG. 5, the same effect as in the example of FIG. 1 can be obtained.

[0021] In the example of FIG. 5, call polyvinyl alcohol, vinyl acetate resins, vinyl chloride resins, polyamide resins, polyurethane resins, and resins such as amino resins
Coating and a film-like dense those solidified on layer 2
It may be four .

FIG. 6 is a partial sectional view of a liner 31 according to still another embodiment of the present invention.

In the figure, reference numeral 27 denotes an upper layer portion similar to that of the example of FIG. 1, and reference numeral 25 denotes a film layer similar to the film layer 14 of the example of FIG. 26 is an upper layer part 27 and a film layer 2
5 and a conductive layer disposed between the, conductive layer 26 is composed of a nonwoven fabric of metal plating fibers.

In the example of FIG. 6, the same effect as that of the example of FIG. 1 can be obtained, and further, the effect of preventing static electricity can be obtained.

In the above example, the liners 28, 2
Although 9, 30, and 31 are joined to the upper shell or the lower shell by heat fusion, they may be joined by the method shown in FIGS.

That is, in FIG.
Holes 28a, 28b, 28c, 28d, 28
e, 28f, 28g and 28h are formed. On the inner surface side of the upper shell 1, the projections 1a, 1b, 1c, 1d, 1e, 1f, 1g, at positions corresponding to the holes 28a to 28h.
1h is formed. The projections 1a to 1h are
After being inserted into 8a to 28h, the protrusions 1a to 1h are caulked by heat or ultrasonic waves, and the liner 28 is fixed to the upper shell 1. At this time, even if the upper portions of the protrusions 1 a to 1 h are melted by heat, the film layer 14 prevents the penetration to the surface of the upper shell 1. Therefore, the liner 28 can be easily separated from the upper shell 1.

As a method of joining the liner 28 and the upper shell 1, there is a method shown in FIG. 9 in addition to the method shown in FIGS.

That is, as shown in FIG. 9, a method in which the liner 28 composed of the upper layer portion 27 and the film layer 14 is partially joined by a large number of pinpoint welds 32 may be used.

Although the above-described embodiment is an example in which the present invention is applied to the floppy disk 13 , the present invention is not limited to the floppy disk 13 , but can be applied to other disk-shaped data recording devices.

[0030]

As it is evident from the foregoing description, according to the invention according to claims 1 to 5, and the upper cover member, and the lower lid member, and a disk-shaped data recording sheet disposed between the upper cover member and the lower lid member ,
A disc-shaped cleaning member disposed on the inner surface side of the upper lid member and the inner surface side of the lower lid member, wherein the cleaning member has a surface side in contact with the disc-shaped data recording sheet of 0.1 to 0.1. 0.3
a layer having a density of g / cm ^3, a surface side to be joined to the upper cover member or the lower lid member is configured in a multilayer structure having at least two layers of a layer with 0.3 g / cm ³ or more density. Therefore, while the disc-shaped cleaning member is reliably fixed to the upper lid member (lower lid member), the cleaning member can be easily separated from the upper lid member (lower lid member), and the disc-shaped data recording apparatus can be recycled. Can be facilitated. The invention according to claims 4 and 5
According to the conductive layer interposed between the upper layer and the lower layer,
Dispose the disk-shaped cleaning member from the upper lid member or the lower lid member.
Prevents dust from being adsorbed when separated
Is done.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a liner according to an embodiment of the present invention.

FIG. 2 is a view showing an example of bonding of an upper layer portion and a film layer in the example of FIG.

FIG. 3 is a view showing another example of the joining of the upper layer portion and the film layer in the example of FIG. 1;

FIG. 4 is a partial sectional view of a liner according to another embodiment of the present invention.

FIG. 5 is a partial sectional view of a liner according to still another embodiment of the present invention.

FIG. 6 is a partial sectional view of a liner according to still another embodiment of the present invention.

FIG. 7 is a diagram showing the shape of the liner in an example of a method of joining the liner and the upper shell.

FIG. 8 is a diagram showing a shape of an upper shell in an example of a method of joining a liner and an upper shell.

FIG. 9 is a view showing another example of a method of joining the liner and the upper shell.

FIG. 10 is an exploded perspective view of a floppy disk.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Upper shell, 6 ... Magnetic sheet, 8 ... Lower shell, 13 ... Floppy disk, 14, 21, 25 ... Film layer, 22, 26 ... Conductive layer, 24 ... High density layer, 27
... Upper layer, 28, 29, 30, 31 ... Liner.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 23/03-23/033

Claims (5)

(57) [Claims] 1. A and the upper cover member, and the lower lid member, and a disk-shaped data recording sheet disposed between the upper lid member and the lower lid member, the inner surface side and the front of the upper lid member
In the disk-shaped data recording apparatus having a disk-like cleaning member disposed on the inner surface side of the serial lower lid member, wherein the cleaning member, the surface side in contact with the disk-shaped data recording sheet 0.1 to 0.3 g / an upper layer having a density of cm ^3, the surface side to be joined to the upper cover member and the lower lid member is 0.3
g / cm ³ and a lower layer having a density of at least two layers .
The cleaning member includes a plurality of peripheral portions of the cleaning member.
Several places are joined to the upper lid member and the lower lid member.
Disk-shaped data recording apparatus characterized by that. (2) The cleaning member is made of 5 rayon.
It is composed of mixed hair fibers containing 0% to 80%, A resin is coated as the lower layer and solidified into a film.
2. The multi-layer structure according to claim 1, wherein
On-disk data recording device. (3) The upper layer is 50% to 80% rayon
And the lower layer is made of polypropylene.
2. A film layer comprising:
Disk-shaped data recording device. (4) An upper lid member, a lower lid member, A disk disposed between the upper lid member and the lower lid member
Data recording sheet, the inner surface side and the front side of the upper lid member.
Disc-shaped cleaning which is arranged on the inner surface side of the lower lid member
Members In the disk-shaped data recording device having The cleaning member is provided for the disk-shaped data recording system.
0.1 to 0.3 g / cm ^Three Density
An upper layer having The surface side joined to the upper lid member or the lower lid member is 0.3
g / cm ^Three A lower layer having the above density, In a multilayer structure in which a conductive layer is formed between the upper layer and the lower layer
And the cleaning member includes the cleaning member.
A plurality of locations on the periphery of the leaning member are the upper lid member and
A disc joined to the lower lid member.
Data recording device. (5) The conductive layer was deposited on the lower layer
Indium oxide or gold laminated on the lower layer
The metal-plated fiber according to claim 4, wherein
Disk-shaped data recording device.