JP2684594B2 - Fountain pen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fountain pen, and more particularly to a fountain pen that is inexpensive, has excellent durability, and has excellent writing quality.

[0002]

2. Description of the Related Art Conventionally, fountain pens, felt pens and the like have been widely used as writing instruments other than pencils and ballpoint pens. The fountain pen is excellent in durability because the pen tip material is made of metal, but is expensive as a whole because the pen tip material is made of expensive metal. Further, since the writing surface of the pen tip is one-sided, there is a problem that the writing habit tends to be added by the user. Further, the tendency to be used in recent years has reduced the opportunities for use.

On the other hand, although the felt pen is inexpensive in its constituent material, since the constituent material of the pen tip is a fiber bundle,
It is difficult to write copy paper with high writing pressure like a ballpoint pen, and the writing quality deteriorates due to deterioration of the pen tip due to use, the drawing line width changes, and the durability is poor. There is. Therefore, an object of the present invention is to provide a perpetual pen that is inexpensive, has excellent durability, and is excellent in writing.

[0004]

The above object is achieved by the present invention described below. That is, according to the present invention, a pen tip portion, a shaft cylinder portion containing ink, and a cap portion are provided, and the pen tip portion has a continuous groove serving as an ink passage and an air pressure adjusting hole on the surface of the polygonal cone. A tapered fiber bundle for supplying ink to the pen tip is fitted into at least one of the grooves, and the other end of the fiber bundle is connected to the ink occlusion body held in the barrel. It is a perennial pen that is characterized by doing so.

[0005]

In the fountain pen, the pen tip portion is composed of a polygonal cone, and a continuous groove serving as an ink passage and an air pressure adjusting hole is provided on the surface of the pen tip. At least one of the grooves is filled with ink. By inserting the tapered fiber bundle to be supplied to the ink bundle and connecting the other end of the fiber bundle to the ink storage body held in the barrel, it is inexpensive and has excellent durability, It is possible to provide excellent fountain pens.

[0006]

The present invention will be described in more detail with reference to the preferred embodiments shown in the drawings. FIG. 1a is a diagram schematically showing a cross section of a fountain pen according to an embodiment of the present invention. As shown, the fountain pen of the present invention includes a pen tip portion X, a shaft cylinder portion Y containing an ink occlusion body, and a cap portion Z. At least the tip side portion of the pen tip portion X has a hexagonal pyramid structure as shown in FIG. 1b which is a view taken along arrow A of FIG. 1a and FIG. 1c which is a sectional view taken along the line BB. In this embodiment, the cone has a hexagonal shape.
It is not limited to a hexagonal shape such as a rectangular shape.

A continuous groove 2 which serves as an ink passage and an air pressure adjusting hole is formed on each surface of the cone 1, and the groove 2 is also continuous with a cylindrical portion 3 which is the rear end portion of the pen tip portion X. Has been formed. The cone 1 is provided with a mantle member 4 for suppressing a thin fiber bundle (described later) fitted in the groove 2 of the cone 1, leaving the tip end portion of the pen tip X slightly. However, the jacket member 4 is not always necessary, for example, when the fiber bundle is fixed in the groove 2 with an adhesive or the like. The rear end portion 3 of the pen tip portion X has a cylindrical shape, and this portion can be fitted into the tip end of the barrel Y.

The above nib structure is made of a material having high hardness and excellent wear resistance, such as metal, ceramics, hard plastic, etc., by a suitable molding method such as die casting, powder sintering, injection molding or the like. It can be molded. FIG.
Shows a state in which the pen tip portion X is fitted into the end portion of the barrel Y, and in this state, the thin fiber bundle 5 embedded in the groove 2 of the pen tip portion X (consolidated by a binder and tapered). Is shaped like a rod) is inserted into the ink occlusion body 6 contained in the shaft cylinder Y. The ink occlusion body 6 is a porous body used in conventional felt pens and contains a large amount of liquid ink. The fiber bundle 5 inserted into the ink occlusion body 6 guides the ink in the ink occlusion body 6 to the tip of the pen tip portion X by a capillary phenomenon.

FIG. 2b is an enlarged view of the side surface of the pen tip portion. A groove 2 is formed on the surface of the pen tip portion X, and a thin fiber bundle 5 is inserted into the groove 2 and the pen tip is formed. It is held by the outer cylinder member 4 except for the tip of the portion X. FIG. 2c shows the shape of a tapered thin fiber bundle 5.
The rear end is inserted into the ink occlusion body 6, and ink is supplied from the occlusion body 6 to the tip of the pen tip portion X. The groove 2 is formed in such a shape that the thin fiber bundle 5 is just fixed or in a slightly larger shape.

FIG. 2d shows a cross section of the cone 1 portion of the pen tip portion X. In this example, a groove 2 is formed on each surface of the hexagonal cone 1 and three of the six grooves are formed. A thin fiber bundle 5 is fitted into the book, and the other three grooves 2 remain as air passages, and serve to adjust the air pressure inside the fountain pen of the present invention. In this embodiment, the fiber bundle 5 has 3 in 6 grooves 2.
Although it is fitted in the book, it is sufficient that at least one groove 2 is fitted therein, and the groove 2 in which the fiber bundle 5 is not fitted acts as an air pressure adjusting hole inside the pen. When the air pressure adjusting hole is formed in the shaft tube portion Y, for example, the fiber bundle may be fitted into the groove 2 altogether.

As described above, the fountain pen of the present invention is characterized by the structure of the pen tip, and the other components such as the fiber bundle for introducing ink, the ink occlusion body, the shaft cylinder, the cap, etc. are conventional. It may be the same as in the fountain pen, felt-tip pen, felt-tip pen, etc. and is not particularly limited.

[0012]

According to the present invention as described above, in the perpetual pen, the pen tip portion is composed of a polygonal cone, and a continuous groove serving as an ink passage and an air pressure adjusting hole is provided on its surface, and the groove of the groove is formed. By inserting a tapered fiber bundle for supplying ink to the pen tip into at least one of the fibers, and connecting the other end of the fiber bundle to the ink occlusion body held in the barrel.
It is possible to provide a fountain pen that is inexpensive, has excellent durability, and has excellent writing characteristics.

[0013]

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a perpetual pen of the present invention.

FIG. 2 is a diagram illustrating an embodiment of a perpetual pen of the present invention.

[Explanation of symbols]

 X: Pen tip part Y: Shaft cylinder part Z: Cap part 1: Cone 2: Groove 3: Column part 4: Outer cover member 5: Fiber bundle 6: Ink occlusion body

Claims (3)

(57) [Claims] 1. A pen tip portion, a shaft cylinder portion for containing ink, and a cap portion, wherein the pen tip portion has a continuous groove serving as an ink passage and an air pressure adjusting hole on a surface of a polygonal cone. Then, a tapered fiber bundle for supplying ink to the pen tip is fitted into at least one of the grooves, and the other end of the fiber bundle is
A perpetual pen characterized by being connected to an ink occlusion body held in a barrel. 2. The perpetual pen according to claim 1, wherein an outer jacket member of the tapered fiber bundle is provided on the surface of the polygonal cone. 3. The perpetual pen according to claim 1, wherein the pen tip portion is made of metal, ceramics or hard plastic.