JPS6343109Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cartridge-type and suction-type fountain pen that can use a cartridge-type ink cylinder and has a built-in ink suction mechanism.

Recently, cartridge-type ink cylinders have become popular, and so-called cartridge-type fountain pens are often used, but these ink cylinders are not completely distributed in all parts of the world, and are often difficult to obtain. In order to fill a cartridge-type fountain pen with ink in such a case, a separate attachment whose internal volume can be increased or decreased is prepared, and this attachment is attached in place of the cartridge-type ink cylinder to suck in ink. Therefore, it is troublesome to prepare such attachments, and the user is forced to bear the burden accordingly.

In view of the above circumstances, the purpose of the present invention is to provide a fountain pen that can be used both as a cartridge type and a suction type and does not require a separate attachment. A suction cylinder with a removable cartridge-type ink cylinder attached to the rear end is screwed onto the inner surface of the cylinder in a state that it cannot rotate with respect to the neck cylinder, and as the cylinder rotates, the tip of the suction cylinder This is achieved by allowing the sliding portion to slide airtightly against the inner surface of the neck cylinder, thereby making it possible to increase or decrease the volume of the ink storage portion.

Embodiments of the present invention will be specifically described below with reference to the drawings.

A pen core 5 having a pen tip 6 superimposed on the upper surface of the tip side is fitted into the opening at the tip of the neck tube 1. The outer diameter of the rear end of the neck tube 1 is reduced, and an annular groove 2 is carved perpendicularly to the axis on the outer surface of this small diameter portion, and two engaging protrusions are formed on the rear end edge. 3 are opposed to each other and protrude inward. An annular projection 9 is provided on the inner surface of the tip of the shaft tube 7, and this is attached to the neck tube 1.
The shaft tube 7 is fitted into the annular groove 2 of the neck tube 1 so that it can freely rotate with respect to the neck tube 1. A female thread 8 of a predetermined length is cut on the front inner surface of the shaft tube 7, and a transition tube 16 is removably screwed onto the rear end. A piercing pipe 13 is provided at the rear end of the suction cylinder 10.
is integrally provided, and a cartridge type ink cylinder 15 is removably attached thereto. A male thread 12 is formed on the outer periphery of the rear end, and is screwed into a female thread 8 on the inner surface of the shaft cylinder 7. The outer periphery of the tip forms a sliding part 14 that airtightly contacts the inner surface of the neck tube 1, and two vertical grooves 11 are provided between the sliding part 14 and the male thread 12, and the above-mentioned engagement The protrusion 3 is engaged. Therefore, the suction cylinder 10 cannot rotate relative to the neck cylinder 1, and the shaft cylinder 7 is connected to the neck cylinder 1.
When the suction tube 10 is rotated relative to the shaft tube 7, the suction tube 10 moves back and forth because it is screwed into the shaft tube 7.

Therefore, in the fountain pen of the present invention having the above configuration,
When using the cartridge type, remove the transition tube 16 from the shaft tube 7 and insert the ink tube 15 into the piercing tube 1.
3 and use it as before.

Next, when using the suction type, rotate the shaft cylinder 7 to position the suction cylinder 10 at the forefront, and move the inside of the neck cylinder 1, the inside of the suction cylinder 10, and the ink cylinder 15.
Minimize the volume of the ink storage section consisting of
Then, the tip of the pen core 5 is put into an ink fountain (not shown), and the barrel 7 is rotated to move the suction barrel 10. At this time, since the sliding portion 14 at the tip of the suction cylinder 10 airtightly slides on the inner surface of the neck cylinder 1, the volume of the ink storage section forming a closed space increases, and ink equal to this increased amount is suctioned. In this state, ink fills only the inside of the neck cylinder 1 and does not fill the suction cylinder 10 and the ink cylinder 15. However, in order to fill this part with ink, point the nib 6 upward to the barrel cylinder. 7 and moves the suction cylinder 10 upward to discharge the air in the ink storage section.Then, by repeating suction in the same manner as described above, the ink storage section can be sufficiently filled with ink.

As explained above, the present invention allows cartridge-type ink cylinders to be used in the same way as before, and has a built-in ink suction mechanism, so even if a spare cartridge-type ink cylinder is not available, a dedicated attachment can be prepared separately. This makes it possible to inhale ink without having to do anything, which has great practical value.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line of FIG. 1. 1... Neck tube, 5... Pen core, 6... Pen tip,
7...Shaft cylinder, 10...Suction cylinder, 14...Sliding part,
15...Ink cylinder.

Claims (1)

[Scope of utility model registration request] A neck tube in which a pen core with a superimposed nib is fitted into its tip opening on the upper surface of the tip side, a shaft tube that is rotatably fitted to the neck tube, and a cartridge at the rear end. A type ink cylinder is removably attached,
and a suction tube whose tip sliding portion slides back and forth against the inner surface of the neck tube in an airtight manner as the barrel rotates.