JP2002023618A - Point pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a point pen which has the front end in the needle point part precisely made into a semispherical part having a prescribed radius. SOLUTION: A point pen 1 is provided with a point pen main body 10 as molded goods of engineering plastics having a high mechanical strength and a grip 20 made of resin which is attached to a grip base part 10b of the pen point main body 10. The pen point main body 1 includes a needle point part 10a of which the sectional area is gradually increased from a semispherical front end 10c and the flat grip base part 10b which is used for attaching the grip 20 and is integrally formed into one body together with the needle point part 10a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush used for forming braille by hand, and more particularly, to the accuracy of a semicircular ball having a radius of about 0.7 mm disposed at the tip of a needle tip. It relates to a dot brush that can be easily obtained.

[0002]

2. Description of the Related Art FIGS. 3 (a) to 3 (c) are front views of a conventional typical stylus. A conventional writing brush has a metal needle tip made up of a semicircular tip and a cylinder having the same circular cross section, and a wooden or plastic grip for embedding and fixing one end of the needle tip. It is comprised including.

[0003]

The tip of the stylus tip of such a stylus is a semicircular sphere having a radius of about 0.7 mm, but has the drawback that it is extremely difficult to precisely machine this tip. I was In addition, such a brush is used together with a braille device or a pocket ruler. In these devices, a frame is formed so as to surround a space (6 mm × 4 mm) for one Braille character. The user touches (or does not touch) the top of the handgrip grip to the palm, and squeezes the grip with the thumb and several other fingers so that the needle tip is perpendicular to the frame. Press in to form irregularities on the paper. However, the space for one Braille character has only the dimensions described above, and 3 × 2 irregularities must be formed in this narrow space. Therefore, the creation of Braille can be said to be a very careful and speedy operation of always inserting the needle tip in an accurate position and perpendicular to the frame.

In this case, the braille creator does not insert the needle tip vertically away from the frame, but automatically inserts it along the frame so that the needle tip is automatically guided to a predetermined position. There was a demand for the development of a stylus brush. This demand could not be met by a conventional brush pen using a metal round bar as the material of the needle tip.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stylus in which the tip of the stylus of the stylus can be precisely formed into a semicircular spherical portion having a predetermined radius. The problem to be solved by the present invention is to provide a writing brush in which the tip of the needle tip can be guided to an accurate position using a frame by changing the cross section of the needle tip. . A further problem to be solved by the present invention is to provide a writing brush which supplements the lack of strength due to plastic and firmly supports the base of the needle tip to which an extremely large force is applied.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a needle tip for gradually increasing the cross-sectional area from a semi-spherical tip and a needle tip for attaching a grip. The brush body, which is a molded product made of engineering plastic with high mechanical strength, including a flat grip base integrally formed, and a resin grip attached to the grip base of the brush body Provided is a stylus that is provided and configured. By forming the main body of the brush into a plastic molded product as a whole, all parts including the semicircle and nine parts at the tip of the needle tip can be manufactured accurately and easily according to the precision of the mold.

According to a second aspect of the present invention, there is provided the stylus according to the first aspect, wherein the grip is integrally formed so as to embed the grip base of the main body. After the grip base is manufactured as a molded product as described above, the grip is integrally molded into a predetermined shape around the grip base of the writing brush main body. As a result, the grip base is embedded in the grip, and the support of the needle tip is firm.

[0008] According to a third aspect of the present invention, in the brush according to the first or second aspect, the brush body is made of polyacetal.
Any one selected from the group consisting of polyamide, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, and modified polyphenylene oxide, wherein the grip is a thermoplastic elastomer such as polyurethane rubber. By the combination of these materials, the brush body has strength and abrasion resistance,
In addition, the grip can be adapted to the palm of the hand and firmly grasped, thereby imparting properties.

The present invention described in claim 4 provides the present invention according to claims 1 to 3.
In the brush writing device according to any one of the above, the head portion extends between the needle tip portion and the grip base portion at least in the left-right direction and the wrist direction from the needle tip side toward the grip base portion. It is characterized by having. Thereby, the needle tip is firmly supported on the grip base.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a brush pen according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of a stylus according to the present invention, in which (a) to (e).
Are a right side view, a front view, a rear view, a plan view, and a bottom view, respectively. FIG. 2 shows the brush body of FIG.
(A)-(e) is a right side view, a front view, a rear view, a plan view, and a bottom view, respectively.

The stylus 1 of the present invention generally comprises a needle tip 10a, which is a molded product of engineering plastic having high mechanical strength, and a flat grip base 10b formed integrally with the needle tip 10a. And a resin grip 20 attached to the grip base 10 b of the brush main body 10.

The tip of the needle tip 10a has a hemispherical shape 10c and is precisely controlled in shape. This is because the brush main body 10 is a molded product made of engineering plastic. That is, by making the brush main body 10 a plastic molded product as a whole, all parts including the semicircular sphere part 10c at the tip of the needle tip can be made in accordance with the precision of the mold used when manufacturing it. It can be manufactured accurately and easily. The needle tip 10a is configured to gradually increase the cross-sectional area from the tip of the semicircular sphere 10c. In the illustrated preferred embodiment, this area is pushed down along the wall of a frame surrounding a single Braille space formed in a device such as a braille device or a pocket ruler. As a result, the semicircular sphere 10c, which is the tip, is automatically guided to a predetermined position automatically. Therefore, the user does not need to use the right angle between the frame and the brush 1 without paying much attention, and can quickly form Braille.

In the illustrated preferred embodiment, the needle tip 1
0a and the grip base 10b, the needle tip 10a
It is characterized in that it is provided with a head portion 10d which expands at least in the left-right direction and the wrist direction from the side toward the grip base portion 10b (see FIG. 1B). Thus, the needle tip 10a is firmly supported on the grip base 10b. The grip 20 is provided on the grip base 10 of the brush body 10.
b is integrally molded in such a state as to be embedded therein.
A plurality of through holes 10e are formed at predetermined positions of the grip base 10b in order to enhance the connection between the two. When the material of the grip 20 enters the through hole 10e, the coupling between the two becomes stronger. After the brush main body 10 is manufactured as a molded product as described above, the grip 20 is integrally molded around the grip base 10b of the brush main body 10 into a predetermined shape. As a result, the grip base 10b is embedded over a wide area in the grip 20, and the support of the needle tip 10a is firm.

In the illustrated preferred embodiment, the brush body 10 is made of a material having high mechanical strength and excellent abrasion resistance, such as polyacetal, polyamide, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, and modified polyphenylene oxide. Manufactured. On the other hand, the grip is made of a thermoplastic elastomer such as polyurethane rubber which can be injection molded, that is, has good moldability and can be manufactured easily and at low cost. By combining these materials, the brush body 10 has strength and abrasion resistance,
The grip 20 is adapted to fit the palm of the hand so that it can be firmly gripped, thereby imparting properties.

[0015]

According to the present invention, there is provided a needle tip portion for gradually increasing the cross-sectional area from the semi-spherical tip, and a flat grip base formed integrally with the needle tip portion for attaching the grip. It consists of a brush body, which is a molded product made of engineering plastic with high mechanical strength, and a resin grip attached to the grip base of the brush body. The use of a plastic molded product has the effect of making it possible to accurately and easily manufacture all parts including the semicircle and nine parts at the tip of the needle tip, with the precision of the mold.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a stylus according to the present invention;
(A)-(e) is a right side view, a front view, a rear view, a plan view, and a bottom view, respectively.

FIGS. 2A and 2B show the brush body of FIG. 1;
Are a right side view, a front view, a rear view, a plan view, and a bottom view, respectively.

FIGS. 3A to 3C each show a conventional writing brush.

[Explanation of symbols]

1 writing brush 10 writing brush main body 10a needle tip, 10b grip base, 10
c semicircular sphere part 10d head part, 10e through hole 20 grip

Claims (4)

[Claims] 1. A machine comprising a needle tip for increasing a sectional area gradually from a semi-spherical tip and a flat grip base integrally formed with the needle tip for attaching a grip. A brush which comprises a brush body which is a molded product of engineering plastic having a high mechanical strength, and a resin grip attached to a grip base of the brush body. 2. A writing brush according to claim 1, wherein said grip is integrally molded so as to embed a grip base of said writing brush main body. 3. The brush according to claim 1, wherein said brush body is any one selected from the group consisting of polyacetal, polyamide, polycarbonate, polyethylene terephthalate, polybutylene terephthalate and modified polyphenylene oxide. A writing brush, wherein the grip is made of a thermoplastic elastomer such as polyurethane rubber. 4. The stylus according to claim 1, wherein the stylus body is disposed between the needle tip and the grip base from the needle tip side toward the grip base. A writing brush, comprising: a head portion that expands at least in the left-right direction and the wrist direction, thereby firmly supporting the needle tip.