JP5173963B2 - Ink bottle with ink reservoir - Google Patents

Description

The present invention relates to an ink bottle used in a fountain pen that sucks ink and replenishes an inch cylinder.

In fountain pens, there are two types of ink cartridges: the cartridge type that replaces the cartridge that is the ink cylinder and the suction type, but if the ink is reduced or used up in the ink cylinder, the pen tip is used as an ink bottle. The ink is sucked in by the action of the insertion and piston, or the volume of the flexible ink cylinder is reduced, and the ink is sucked by the suction force when restoring the original state.

Sailor Fountain Pen Co., Ltd. General Catalog 2009-2010 Edition

The pen tip of the fountain pen has a triangular shape at the front, and has a vertical cut at the center. A round or heart-shaped end portion is formed in the cut, and a pen core ink groove disposed on the back side of the pen tip is connected to the end portion. Therefore, in order to suck the ink by inserting the pen tip into the ink bottle, it is necessary to locate the end portion of the cut in the ink. However, since there is a few millimeters from the tip of the nib to the end of the cut, if the remaining amount of ink in the ink bottle decreases, the end of the cut will remain in the ink even if the tip of the nib contacts the bottom of the ink bottle. The ink cannot be positioned on the surface, and the ink cannot be sucked. That is, a large amount of ink that cannot be sucked remains in the ink bottle. In particular, in the case of an ink bottle having a large bottom area, the amount of ink that cannot be sucked increases.

For this reason, there are known ink bottles equipped with an ink reservoir. In the ink reservoir, for example, a conical pen tip insertion portion having a small volume is formed below the upper cylindrical portion. An inflow hole is formed in the tube portion. When the remaining amount of ink decreases, the ink bottle is rotated 180 ° in the vertical direction to turn upside down, and further rotated 180 ° in the same direction or the reverse direction to return to the original state. Here, when the ink is rotated 180 ° and turned upside down, the ink staying at the bottom of the bottle falls to the lid side of the ink bottle, enters the cylinder from the inlet hole of the ink reservoir, and further rotates 180 °. When the top and bottom are returned to the original position, the ink that has entered the cylinder part falls into the pen tip insertion part. For this reason, even when the remaining amount of ink is small, the pen tip insertion portion is filled with ink, so that ink can be sucked.

However, by rotating the ink bottle up and down in this way and turning it upside down and then rotating it back to the original state, the reduced amount of ink is guided to the pen tip insertion portion of the ink reservoir. It is difficult to guide the ink to the pen tip insertion portion, and ink that cannot be sucked into the fountain pen will remain at the bottom of the ink bottle.

FIG. 5 shows a conventional example. When the bottom surface 24 of the ink reservoir 2 and the bottom surface of the ink bottle 1 are in surface contact, the ink penetrates between both surfaces by capillary action, and a thin ink film is formed. When the remaining amount of ink in the ink bottle 1 is reduced (A) and rotated 180 ° and turned upside down (B), the bottom surface 24 of the ink reservoir 2 is in contact with the bottom surface of the ink bottle 1. May adhere to the bottom surface of the ink bottle 1 due to the adsorption force of the thin ink film existing between the two. For this reason, the space | interval between the front-end | tip opening of the cylinder part 22 and the lid | cover 19 which is a bottom part when it reverses is large, and the ink Ib which is not covered with the cylinder part 22 increases. That is, when the ink I in the cylindrical portion 22 is small, and further rotates 180 ° and passes through (C) to the original state (D), most of the ink Ib does not enter the pen tip insertion portion 21. It remains at the bottom of the ink bottle 1. Therefore, there is a problem that the amount of ink Ia that cannot be used increases.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an ink bottle with an ink reservoir capable of efficiently sucking ink that has decreased in an ink bottle into a fountain pen and reducing ink that is not used.

In order to achieve such an object, the present invention provides an ink reservoir with an ink reservoir that is equipped with an ink reservoir that allows the remaining ink in the ink bin to be sucked with a fountain pen. This bottom surface portion is composed of a cylindrical portion located in the cylindrical portion, an inflow hole formed in the cylindrical portion, a conical pen tip insertion portion formed below the cylindrical portion, and a bottom surface portion below the pen tip insertion portion. A minute protrusion is formed on the lower surface of the ink bottle so that the bottom surface portion does not adhere to the bottom surface of the ink bottle due to the adsorption force of the ink film when the ink bottle is rotated 180 ° in the vertical direction.

A cylindrical portion located in the neck of the bowl-shaped ink bottle, an inflow hole formed in the cylindrical portion, a conical pen-tip insertion portion formed below the cylindrical portion, and a bottom surface below the pen-tip insertion portion Since the ink reservoir composed of the part is attached to the ink bottle, when the ink in the ink bottle is low, the ink bottle is rotated upside down and turned upside down and returned to its original state. Since the pen tip insertion portion is filled with ink, the ink can be sucked by inserting the pen tip of the fountain pen here.

And since a minute protrusion was formed on the bottom surface of the bottom surface portion of the ink reservoir, and the bottom surface portion was not attached to the bottom surface of the ink bottle due to the adsorption force of the thin ink film when the ink bottle was rotated 180 ° in the vertical direction, Since the ink in the cylinder part increases due to contact with the lid that is the bottom part when the tip opening is reversed, the ink can be efficiently guided to the pen tip insertion part when it is rotated 180 ° again and returned to its original state.

It is a front view of this invention Example. It is sectional drawing and bottom view of an ink reservoir. It is explanatory drawing when an ink bottle is rotated to the up-down direction. It is explanatory drawing of a use state. It is explanatory drawing of a prior art example.

In FIG. 1, a glass ink bottle 1 has a bowl-shaped bottom surface 12 and a neck 11 is cylindrical. A lid 19 is screwed to the neck 11 so as to be freely attached and detached. An ink reservoir 2 is mounted in the ink bottle 1. As shown in FIG. 2, the ink reservoir 2 has a cylindrical cylindrical portion 22 at the top, and two inflow holes 23 are formed in the cylindrical portion 22 so as to face each other. Below the tube portion 22 is a conical pen tip insertion portion 21, but the pen tip insertion portion 21 has a small volume enough to allow the pen tip of a fountain pen to be inserted. The bottom part of the pen tip insertion part 21 is a bottom part 24 having a slightly large area, so that the ink reservoir 2 can be stably mounted in the ink bottle 1. Ribs are provided radially on the bottom surface of the bottom surface portion 24 as minute protrusions 25. The protrusion 25 is not limited to the rib.

Here, the inner diameter of the neck portion 11 is 28.8 mmφ, the outer diameter of the cylindrical portion 22 is 27.5 mmφ, and the gap between the neck portion 11 and the cylindrical portion 22 is very small. The height of the protrusion 25 is 1.5 mm, and an ink thin film having a strong adsorption force is not formed between the bottom surface 12 of the ink bottle 1 and the bottom surface portion 24 of the ink reservoir 2. Moreover, the area of one inflow hole 23 is about 40 square millimeters.

The ink bottle 1 is rotated in the vertical direction from the state shown in FIG. 1 where the ink remaining in the ink bottle 1 is low, but when it is rotated 180 ° and turned upside down to become FIG. 3 (A), the bottom surface 24 of the ink reservoir 2 and the ink bottle Since there is no strong ink thin film between the bottom surface 12 and the ink reservoir 2, the ink reservoir 2 falls and comes into contact with the lid 19 which is the bottom when the front end opening of the cylindrical portion 22 is reversed. In this process, the ink I that has fallen earlier than the ink reservoir 2 is surrounded by the cylindrical portion 22, and the ink I that falls late flows into the cylindrical portion 22 from the inflow hole 23. At the same time, the air in the ink reservoir 2 escapes from the inflow hole 23 to the outside. Here, since the gap between the neck portion 11 and the cylindrical portion 22 is very small, most of the ink I is surrounded by the cylindrical portion 22.

From this state, when 180 ° is further rotated and the original state shown in FIG. 3C is obtained through FIG. 3B, most of the ink I can be guided to the pen tip insertion portion 21. Only a small amount of the ink Ia is filled with the ink I and cannot be used because it is not led to the pen tip insertion portion 21. Here, when rotating further 180 ° and returning to the original state (C) after passing through (B), a part of the ink I flows out from the inflow hole 23, so the area and the number of the inflow holes 23 are appropriately determined. There is a need to. That is, it is necessary to consider the speed at which the ink I flows from the inflow hole 23 by the first 180 ° rotation and the amount of the ink I flowing to the outside by the second 180 ° rotation. It is preferable to provide a plurality of inflow holes 23 of about square millimeters.

As shown in FIG. 4, when ink is sucked into the fountain pen F, the pen tip P is inserted into the pen tip insertion portion 21, but the end portion 33 of the cutting tip 32 of the pen tip P is filled with ink I. Ink I can be inhaled, and the remaining ink in the ink bottle 1 can be used efficiently. Here, when the pen tip P is inserted into the pen tip insertion portion 21, the tip end portion 31 and the corner portion 34 of the pen tip P are in contact with the bottom surface and the side surface of the pen tip insertion portion 21 at the same time. The shape should be defined. When only the corner portion 34 comes into contact with the side surface of the pen tip insertion portion 21 made of synthetic resin, the ink reservoir 2 may also float from the ink bottle 1 when the corner portion 34 made of metal bites into the side surface and picks up the fountain pen F. On the contrary, when only the tip 31 is brought into contact with the bottom surface, the tip 31 may be worn and damaged.

DESCRIPTION OF SYMBOLS 1 Ink bottle 11 Neck part 12 Bottom face 19 Lid 2 Ink reservoir 21 Pen tip insertion part 22 Cylinder part 23 Inflow hole 24 Bottom face part 25 Protrusion 31 Tip part 32 Cutting 33 Termination part 34 Corner part

Claims (1)

In an ink bottle with an ink reservoir equipped with an ink reservoir that rotates the ink bottle with less ink left and right to guide the ink to the small pen tip insertion part of the ink reservoir and suck the ink with a fountain pen.
The ink reservoir includes a cylindrical portion located in a neck portion of a bowl-shaped ink bottle, an inflow hole formed in the cylindrical portion, a conical pen-tip insertion portion formed below the cylindrical portion, and a pen-tip insertion The bottom surface of the bottom surface of the ink bottle has minute protrusions, and when the ink bottle is rotated 180 ° in the vertical direction, the bottom surface of the ink bottle does not adhere to the bottom surface of the ink bottle due to the adsorption force of the ink film. An ink bottle with an ink reservoir.