JPS5845091Y2 - Nib - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an elastic pen nib, and more particularly, to a pen nib that can be tightened closer to the touch of a brush.

Conventionally, in order to get closer to the feel of a brush, for example,
Devices such as Japanese Patent No. 1-13828 and Japanese Utility Model Application Publication No. 136732/1989 filed by the present applicant are known.

However, in these ideas, a porous elastic body and
Since the pen tip is constructed from a part of the liquid-containing or relay core placed behind the elastic body, there is no variation in ink flow depending on the state of contact between the porous elastic body and the liquid-containing body or relay core. However, since the porous elastic body must be made into a hollow shape, the processing is troublesome.

In addition, in Utility Model Application Publication No. 51-13828, the hollow elastic body is a thin layer, and the elastic body and liquid-containing body are involved in both thin and thick writing. Looking at the relationship between pressure and handwriting width, the liquid content from fine to bold characters is involved in the width of the handwriting, and this determines the width of the handwriting. This did not fully satisfy the condition of a change in strength.

Therefore, the purpose of this invention is that if you put effort into writing it,
To provide a pen nib that has a writing feel that allows you to sense a certain level of stiffness, has as few components as possible, and stabilizes ink flow even slightly.

The present invention will be explained below with reference to embodiments shown in the drawings.

First, to explain FIG. 1 showing the first embodiment, 1
is a pen nib, and the pen nib 1 is composed of an elastic pen body 2 made of porous synthetic resin that faces forward and has a small diameter, and a large number of spherical bodies 3 dispersed in the pen body 2. I am forced to do so.

To be more specific about the pen body 2, it is most preferable that its outer shape is tip-shaped, but as mentioned above, it has a small diameter as it faces forward, in other words, its cross-sectional area gradually decreases as it faces forward. It is sufficient if the configuration is such that the diameter is small.
For example, it may be spatula-shaped.

In addition, the type and manufacturing method of the porous synthetic resin are described, for example, in Japanese Patent Publication No. 50-3348, but various other ink-resistant synthetic resins and methods can be used. In order to disperse the spherical bodies,
When blending synthetic resin with other materials, spherical bodies may be mixed and molded, but porous synthetic resin has a continuous pore diameter of 1 to 200μ, preferably about 10μ, based on many experimental results. It can be said that a microscopic one with a void ratio of about 60 to 90% is suitable.

Regarding the spherical body 3, materials that do not melt due to heat during synthetic resin molding and are resistant to ink, such as glass, metal, or synthetic resin, can be used as the material, and the shape can vary depending on the external shape. It only needs to be spherical, and the surface can be provided with fine irregularities, penetrating pores, or capillary holes through which ink can flow, but the preferred outer diameter is about 50 to 200 μm. I can say that.

In the figure, 4 is a shaft cylinder, 5 is an ink storage body, and 6 is a well-known rod for smoothly expelling ink from the ink storage body 5.
7 is an air circulation groove, none of which is a main part of the present invention,
For example, the ink absorber may be replaced with a fountain pen type raw ink filling method, the air circulation groove may be replaced with a hole in the barrel 4 as shown in Figure 2, and the pen tip may be fixed to the barrel 4. As shown in Fig. 2, a protrusion 4' is provided on the inner surface of the tip of the barrel 4, and a groove 1a is provided on the outer periphery of the pen tip 1, instead of engaging and fixing the two. Depending on the structure of the pen tip, etc., it can be changed and used as appropriate.

FIG. 2 showing another embodiment is basically the same as FIG. 1, but the spherical bodies 3 in the pen nib 1 are dispersed only in the front part of the pen nib, and the spherical bodies 3 It differs from the example shown in FIG. 1 in that the diameter of the diameter is gradually reduced toward the front.

As described above, the present invention has a large number of spherical bodies 3 dispersed in the elastic pen body 2 made of porous synthetic resin, so that the spherical bodies 3 make it difficult for the pen body 2 to move during writing. Since the body 2 faces forward and has a small diameter, the deflection of the nib is determined by the cross-sectional area of the nib, i.e.
Since the tip of the pen nib, which has a small cross-sectional area, is most flexible, the strength of the back can be gradually changed.

In addition, the pen tip 1 has appropriate strength due to the pen body 2 and the spherical body 3, and can change gradually, so there is no need for a liquid-containing or relay lead as in the past. There is no need to worry about variations in ink flow due to the state of contact between the pen tip and the liquid-containing or relay core, and furthermore,
This also has the effect that there is no need to make the pen body hollow when processing the pen tip.

Note that the pen nib of the present invention is suitable not only as a substitute for a writing brush, but also as a nib of a writing instrument for sketching and the like.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main part of the pen nib of the present invention attached to the barrel, and FIG. 2 is a sectional view of the main part of the pen nib of another embodiment attached to the barrel. 1: Pen tip, 2: Pen body, 3: Spherical body.

Claims (1)

[Scope of utility model registration request] A pen nib consisting of an elastic pen body made of porous synthetic resin that faces forward and has a small diameter, and a large number of spherical bodies dispersed therein.