JPH05285724A - File - Google Patents

Abstract

PURPOSE:To provide a file which is superior in durability and by which a wide range of area can be finished without loading due to rust and coating. CONSTITUTION:A metal square pin 2 forming its cross section into square is arranged in rows and columns at appropriate intervals under a base material 1 made of polyurethane and the tip face 6 of the head part 5 of the square pin 2 is formed into approximately flat surface and an approximately perpendicular edge part 7 is formed between the respective sides 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file used for removing iron rust and scraping off an old coating when repainting.

[0002]

2. Description of the Related Art Conventionally, a paper file, a cloth file, a wire brush, etc. have been used to remove iron rust and old paint.
These were scraped off to finish the surface.

[0003]

However, when working with a conventional paper file, cloth file, etc., it will be clogged with rust, paint, etc. after 2-3 uses, so to finish a wide area, A large amount of paper file, cloth file, etc. were required. The present invention has been proposed in view of the above, and an object thereof is to provide a file that is excellent in durability and can finish a wide area without causing clogging by rust or paint.

[0004]

In order to achieve the above-mentioned object, the present invention is one in which a plurality of pins having edge portions are arranged at intervals on the surface of a base material made of synthetic resin.

[0005]

[Function] Due to the edge portion of the pin arranged on the base material, iron rust,
Old paint etc. can be scraped off, and scraps do not get stuck between pins.

[0006]

1 is a front view of a file according to the present invention, FIG. 2 is a bottom view, and FIG. 3 is a line AA 'in FIG. A sectional view is shown.

Substrate 1 made of synthetic resin such as polyurethane
As shown in FIG. 2, square pins 2 having a square cross-section are arranged on the lower surface of the column 2 in rows and columns at appropriate intervals d. The square pin 2 is made of a metal material, and the extension line of each side surface 3 is substantially orthogonal to the outline 4 of the base material 1, and each adjacent square pin 2
The side surfaces 3 of the two are parallel to each other and face each other at an appropriate interval d. Further, the tip end surface 6 of the head portion 5 of the square pin 2 is formed in a substantially flat surface, and an edge portion 7 at a substantially right angle is formed between each of the side surfaces 3. The head 5 of the square pin 2 is insert-molded so as to project from the lower surface of the base material 1 by about 4 to 5 mm.

Although FIG. 3 shows the square pin 2 in which the head portion 5 has a diameter larger than that of the leg portion 8 which is inserted into the base material 1, the leg portion 8 has the same diameter as the head portion 5 or a large diameter. May be. Further, in this embodiment, the square pin 2 having a prism shape is shown as the pin, but it may have a cylindrical shape, a polygonal prism shape, a cone shape or the like.

Next, the method of using the file having the above structure will be explained. Holding the handle 9 provided on the upper surface of the base material 1,
The tip surface 6 of the square pin 2 may be applied to a work surface on which rust or old paint is removed and appropriately rubbed, and the rust or old paint may be scraped off at the edge portion 7. At this time, since there is a space between the square pins 2, the work can be continued without causing clogging. Further, since the polyurethane as the base material 1 is flexible, it can be effectively used not only for the flat surface portion but also for the curved surface portion.

When the edge portion 7 of the square pin 2 is worn and rounded to reduce the work efficiency, the head portion 5 of the square pin 2 is ground with a grinder or the like to restore the edge portion 7. If so, you can work again efficiently.

Although the present invention has been described above with reference to the embodiments shown in the drawings, the present invention is not limited to the above-mentioned embodiments and can be appropriately implemented without changing the configuration described in the claims. For example, the base material 1 can be made of not only polyurethane but also other synthetic resin,
A pin made of ceramic or glass may be used instead of the metal pin.

[0012]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, a large amount of conventional paper files and cloth files are not used, so that resources are saved and iron rust, old paint, etc. can be easily removed. It can be removed easily. Further, although the conventional files are disposable, the file according to the present invention is the one in which the edge portion of the pin is rounded due to wear and the work efficiency is lowered, and the rounded portion is scraped off to restore the file. Since it can be regenerated into a new product and the work can be continued efficiently, its practical value is extremely high.

[Brief description of drawings]

FIG. 1 is a front view of a file according to the present invention.

FIG. 2 is a bottom view of a file according to the present invention.

FIG. 3 is a sectional view taken along the line AA ′ of FIG.

[Explanation of symbols]

 1 Base Material 2 Square Pin 3 Side Surface 4 Outline Line 5 Head Part 6 Tip Surface 7 Edge Part 8 Leg Part 9 Handle

Claims (1)

[Claims] 1. A file characterized in that a plurality of pins having edge portions are arranged at intervals on the surface of a base material made of synthetic resin.