JPH1081092A - Writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a writing instrument preventing the ink leakage from a pen point and the evaporation of ink at the time of not using and keep the ink amount filled preliminarily in an ink cylinder to the time of starting the use. SOLUTION: A pen point holder 3 with a pen point 4 fitted on is connected with the front of an ink cylinder 1 filled with ink 2 preliminarily, and an ink flow opening 7 feeding the ink 2 in the ink cylinder 1 into the pen point 4 is formed on the pen point holder 3, and a cap 8 closing an outlet of the ink flow opening 7 at the time of not using is provided, and a bar 10 moving in the forward and backward direction and opening the inlet of the ink flow opening 7 by breaking through the above-said cap 8 by its front end is provided in the ink cylinder 1, and a knob 11 connected with the rear end of the bar 10 and appearing at the rear of the ink cylinder 1 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a writing instrument such as a fountain pen.

[0002]

2. Description of the Related Art Conventionally, there has been known a writing implement which is filled with ink beforehand and shipped. Such a writing instrument,
There has been a problem that the ink in the ink cylinder leaks from the pen tip or evaporates during storage or transportation, and the amount of ink decreases.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a writing implement which can prevent ink leakage from a pen tip and evaporation of ink when not in use, and can maintain the amount of ink previously filled in an ink cylinder until the start of use. With the goal.

[0004]

The above object is achieved by the present invention, that is, the ink cylinders 1, 1 filled with ink 2 in advance.
A pen tip holder 3 having a pen tip 4 attached thereto is connected to the front of the pen tip 5, and the pen tip holder 3 is provided with an ink circulation hole 7 for supplying the ink 2 of the ink cylinders 1 and 15 to the pen tip 4. 7 is provided with plugs 8 and 17 which can be closed when not in use or when not in use, and which can be moved in the front-rear direction inside the ink cylinders 1 and 15 and pierce the plugs 8 and 17 at the front end thereof. Or rods 10 and 16 capable of opening the entrance of the ink circulation hole 7 by extracting the rods,
This can be achieved by a writing implement characterized in that knobs 19 and 11 are provided integrally with 0 and 16 or connected to the rear ends of the rods 10 and 16 and exposed to the rear of the ink cylinders 1 and 15.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. First, FIGS. 1 to 3 show a fountain pen according to the first embodiment. Figure 1 shows the overall structure when not in use,
Reference numeral 1 denotes an ink cylinder. The ink cylinder 1 is transparent, and the inside thereof is filled with the ink 2 in advance. This ink cylinder 1
The pen point holder 3 is connected to the front end of the pen. The pen tip holder 3 holds a pen tip 4 composed of a pen tip main body 5 and a pen tip stand 6. The pen tip holder 3 has an ink circulation hole 7 for supplying the ink 2 from the ink cylinder 1 to the pen tip 4, and an inlet of the ink circulation hole 7 has a thin film stopper 8 such as a plastic film or waterproof paper.
Sealed. Therefore, when not in use, the ink 2 in the ink cylinder 1 is blocked by the stopper 8 and
And the ink 2 is not supplied to the pen tip 4. On the other hand, a small-diameter cylindrical portion 9 is projected rearward from the rear end surface of the ink cylinder 1. An elongated rod 10 is inserted into the ink cylinder 1 in the front-rear direction. The rod 10 has a front end close to the stopper 8 and a rear end protruding from the small-diameter tube 9 to the rear of the ink tube 1. A lid / knob 11 is connected to the rear end of the rod 10 and is connected to the lid / knob 1.
Reference numeral 1 is fitted on the outer peripheral portion of the small-diameter cylindrical portion 9 so as to be slidable in the front-rear direction. The lid / knob 11 is used for the ink 2 of the ink cylinder 1.
Is prevented from leaking from the small-diameter cylindrical portion 9. Further, a rear cylinder 12 is connected to the rear end of the ink cylinder 1, and the lid / knob 11 is accommodated in the rear cylinder 12. In the drawing, reference numeral 13 denotes a cap with a clip, which is fitted so as to cover the outer periphery of the pen tip 4 and the pen tip holder 3.

When using the fountain pen, the following operation is performed. First, the rear cylinder 12 is removed from the ink cylinder 1, and then the lid / knob 11 is pushed forward. Then, the rod 10 advances as shown in FIG. Thereby, the ink 2 of the ink cylinder 1 flows into the ink circulation hole 7 of the pen tip holder 3, and the ink 2 is further supplied to the pen tip 4 to enable writing.

When the ink 2 in the ink cylinder 1 becomes empty, the lid / knob 11 and the rod 10 are pulled out to the rear of the ink cylinder 1 and then, as shown in FIG. A spare ink cartridge 14 can be connected to the cylinder 9. Therefore, the fountain pen of this embodiment can be used repeatedly and continuously by replacing the spare ink cartridge 14 one after another.

Next, FIGS. 4 and 5 show a fountain pen according to the second embodiment, and FIG. 4 shows the entire structure when not in use. In this fountain pen, a soft plastic or rubber stopper 17 is integrally attached to the front end of a rod 16.
However, instead of the thin-film plug 8 of the first embodiment, the inlet of the ink circulation hole 7 of the pen point holder 3 is sealed. A thick slide shaft 18 that protrudes rearward of the ink cylinder 15 is integrated with the rear end of the rod 16, and a knob 19 is formed at the rear end of the slide shaft 18. The ink cylinder 15 does not have a portion like the small-diameter cylinder portion 9 of the first embodiment at its rear end, and the rear end of the ink cylinder 15 is largely open.
Since the outer peripheral surface of the slide shaft 18 is in water-tight contact with the inner peripheral surface of the opening, ink leakage is prevented. The outer peripheral surface of the slide shaft 18 is slidable in the front-rear direction with respect to the inner peripheral surface of the opening. In addition, the structures of the pen tip holder 3, the pen tip 4, the cap 13, and the rear cylinder 12 are the same as those of the first embodiment.

When the fountain pen of the second embodiment is used, the following operation is performed. First, the rear cylinder 12 is removed from the ink cylinder 15, and then the knob 19 is pulled backward. Then, FIG.
As shown in (1), the rod 16 is retracted, the stopper 17 integrated with the rod 16 is separated from the rear end of the nib holder 3, and the inlet of the ink circulation hole 7 is opened. As a result, the ink 2 in the ink cylinder 15
Flows into the ink circulation hole 7, and the ink 2
And can be written.

In the writing instrument according to the second embodiment, when it is desired to interrupt the use after the start of use, the stick 16 and the plug 17 are advanced by pushing the knob 19 forward, and the plug 17 is moved forward.
Thus, the inlet of the ink circulation hole 7 can be sealed again.

[0011]

The writing implement of the present invention is as described above, and the inlet of the ink circulation hole 7 can be sealed with the stoppers 8 and 17 until use is started. By stopping the supply of ink to the pen 4, the leakage and evaporation of ink from the pen tip 4 can be prevented. Therefore,
It is possible to prevent the amount of ink in the ink cylinders 1 and 15 from decreasing and the surroundings from being stained. The configuration of the first embodiment has the advantage that the spare ink cartridge 14 can be used repeatedly and continuously.
Further, with the configuration as in the second embodiment, there is an advantage that the use can be stopped again after the start of use.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the entire structure of a first embodiment.

FIG. 2 is a cross-sectional view showing a state in which the stopper of the first embodiment is pierced by a rod.

FIG. 3 is a sectional view showing a state where a spare ink cartridge is attached to the first embodiment.

FIG. 4 is a sectional view showing the entire structure of the second embodiment.

FIG. 5 is a cross-sectional view showing a state where a stopper according to a second embodiment is removed.

[Explanation of symbols]

 1,15 Ink cylinder 2 Ink 3 Pen tip holder 4 Pen tip 5 Pen tip main body 6 Pen tip stand 7 Ink circulation hole 8,17 Plug 9 Small diameter cylinder part 10,16 Rod 11 Lid / knob 12 Rear cylinder 13 Cap 14 Spare Ink cartridge 18 Slide shaft 19 Knob

Claims (1)

[Claims] An ink cylinder filled with ink in advance.
A pen tip holder 3 having a pen tip 4 attached thereto is connected to the front of the pen tip 5, and the pen tip holder 3 is provided with an ink circulation hole 7 for supplying the ink 2 of the ink cylinders 1 and 15 to the pen tip 4. 7 is provided with plugs 8 and 17 which can be closed when not in use or when not in use, and which can be moved in the front-rear direction inside the ink cylinders 1 and 15 and pierce the plugs 8 and 17 at the front end thereof. Or rods 10 and 16 capable of opening the entrance of the ink circulation hole 7 by extracting the rods,
A writing instrument, provided with knobs 19 and 11 integral with 0 and 16 or connected to the rear ends of the rods 10 and 16 and exposed to the rear of the ink cylinders 1 and 15.