JPS5931436Y2 - fountain pen - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fountain pen in which the elasticity of one pen can be changed.

Conventional fountain pens usually have one pen attached, and the pen is designed in advance to have a certain elasticity.

Therefore, if you want to write in hard or soft handwriting depending on the type of document you are trying to write or the part of the document you are writing on, you can attach a pen that has elasticity that allows you to obtain the desired handwriting. I will choose a fountain pen.

To do this, it is necessary to have several types of fountain pens equipped with pens with different elasticity, or to carry these fountain pens with you at all times.

This kind of thing is troublesome, especially when carrying, so in order to eliminate this drawback, we prepared several types of fountain pens with pens with different elasticity attached, and it was possible to use one fountain pen with different elasticity without having to press the button. Fountain pens have been invented and devised that are not only made easier to carry by attaching a pen that can be imparted with elasticity, but also have a desired elasticity as desired.

However, each of these inventions and devises has its own drawbacks, and nothing that is even practically satisfactory has been achieved.

In the fountain pen described in Utility Model Application Publication No. 30484 of 1923, it is possible to change the elasticity of the nib by sliding the Senkin A, but the tip of the Senkin A can be placed face down on the back of the nib. At the same time, it has a structure in which it slides against the cutout formed in the pen tip.

Therefore, when the metal gold A slides, the ink that has flowed into the slit is drawn out onto the back of the nib, staining the back of the nib and the metal metal A with ink, causing discomfort to the user.
Moreover, when the cap is fitted, the ink drawn out to the back button of the nib and the gold A adheres to the inner surface of the pen, contaminating the pocket or sheath of the clothes in which the fountain pen is stored. There is.

In addition, in the pen described in Utility Model Application Publication No. 4500 of 1930, a pressure support piece 3 is slidably provided on the upper surface of the pen nib 2, and when not in use, the pressure support piece 3 is slidably provided on the upper surface of the pen nib 2. It has a structure in which the support piece 3 is located in a separated state.

However, during use, when writing pressure is applied to the pen tip 2 and the pen tip 2 is bent, the upper surface of the pen tip 2 is bent by the pressure support piece 3.
Since the ink that has flowed into the cut formed in the nib 2 is drawn out to the upper surface of the nib 2,
The top surface of the nib 2 and the pressure support piece 3 are stained with ink, and when the cap is fitted, the ink drawn out to the top surface of the nib 2 and the pressure support piece 3 adheres to the inner surface of the pen, similar to the fountain pen described above. This results in significant drawbacks.

This project was devised to improve the above-mentioned drawbacks,
That is, a suppressing piece is provided with a gap between it and the surface of the pen, and both ends of the suppressing piece are placed opposite each other with a slight distance from the cut formed on the pen. This is a fountain pen that can be moved by constantly touching the surface of the pen as it moves back and forth.

The feature of the present invention is that the suppressing piece provided so as to be movable back and forth is in contact with the surface of the pen only at both ends of its tip at a position facing the pen at a slight distance from the cutout formed on the pen.
The parts other than the two ends are arranged so that there is a gap between them and the surface of the pen.

Furthermore, the gap is such that it does not cause capillary action, and is such that it maintains a gap that does not cause capillary action even when writing pressure is applied to the pen.

Therefore, the suppression piece does not button on the cutout formed on the pen and does not come into contact with the cutout, and there is no part that causes capillary action between the pen and the tongue piece, so the pen, the inner surface of the suppression piece and the cap, etc. It is easy to handle without being contaminated by ink, and is easy to carry.

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

A ring 5 is fixed to the inner surface 2 of the tip end of the barrel 1, with a flange 3 provided at the tip protruding forward from the end surface 4 of the barrel 1.

The ring 5 is provided with an axially long pore 6 between the flange 3 and the end face 4.

On the outside of the ring 5, the front surface 7 is connected to the rear surface 8 of the flange 3.
A rotary cylinder 10 is provided which is in contact with the flange 3 and the end face 4 and whose rear end face 9 is in contact with the end face 4 and which is rotatable between the flange 3 and the end face 4.

A spiral groove 11 is provided on the inner surface of the rotary cylinder 10.

Inside the ring 5 is a pen core 1 with a pen 12 attached to the tip.
3 is inserted, and the rear end of the pen core 13 is inserted and fixed into the barrel 1.

A suppressor is positioned above the pen 12 with a gap 15 between it and the surface 14 of the pen 12 to the extent that no capillary action occurs, and whose axis coincides with the axis of the pore 6 provided in the ring 5. A piece 16 is provided, the rear portion of which is slidably inserted into the ring 5 in the axial direction.

The suppressing piece 16 is provided at its rear end with a pin 17 that projects from the small hole 6 into the spiral groove 11 and is associated with the rotating cylinder 1''.
This allows the suppression piece 16 to be moved forward or backward by a rotation of zero.

The suppressing piece 16 is formed to have the same curved cross-sectional shape as the curved cross-sectional shape of the pen 12.

(If the pen is formed into a flat plate, the pressing piece is also formed into a flat plate.) At the tip 18 of the pressing piece 16, there is a downward direction (in the direction of the surface 14 of the pen 12) at both ends perpendicular to the axis of the pressing piece 16. )
Protrusions 19 and 191 are provided to protrude from the protrusions 19 and 191.
, 19, lower end surfaces 20, 20. The pen 1
2, respectively.

The lengths of the protrusions 19, 19 are such that a gap is formed between the front surface 14 of the pen 12 and the back surface 22 of the pressing piece 16 at the tip 18 of the pressing piece 16, so that no capillary action occurs;
The suppressing piece 16 has a spiral groove 11 as the rotary cylinder 10 rotates.
When the pin 17 associated with the protrusions 19, 19 . The pen 120 is arranged to move on the surface 14 of the pen 120 extending at a position slightly spaced apart from and opposite the cutout 21.

The proposed fountain pen is constructed as described above, so the pen 1
If you want to increase the elasticity of the pen 12, that is, if you want the pen 12 to have no excess sag even if a strong writing pressure is applied to the pen 12, rotate the rotary barrel 10 and insert the pin 17 associated with the spiral groove 11. The suppression piece 1 is moved to the front part of the pore 6.
6 and the protrusion 19.1 in the front part of the pen 12.
The lower end surfaces 20, 20 of 9□ are brought into contact with the surface 14 at positions facing each other and slightly spaced apart from the cut 21.

In the pen 12, the length between the writing part 23 and the protrusions 19, 19, which contact the paper surface (not shown) when writing is shortened, so that the amount of deflection when writing pressure is applied to the writing part 23 is reduced. The size of the handwriting becomes smaller and sharper handwriting is obtained.

If you want to weaken the elasticity of the pen 12, that is, if you want the pen 12 to flex sufficiently even when a weak writing pressure is applied to the pen 12, rotate the rotary barrel 10 in the opposite direction to the above-mentioned direction of rotation. Pin 17 associated with groove 11
is moved to the rear part of the pore 6 and the suppressing piece 16 is retreated,
In the rear part of the pen 12, the lower end surfaces 20° 20 □ of the protrusions 19, 19 are brought into contact with the surface 14 at opposing positions slightly spaced apart from the cut 21.

In the pen 12, since the length between the writing part 23 that contacts the paper surface when writing and the protrusions 19, 19 of the pressing piece 16 becomes long, the amount of deflection when writing pressure is applied to the writing part 23 becomes large. , resulting in soft handwriting.

As described above, in this invention, it is possible to change the elasticity of the pen by moving the suppression piece back and forth, and by appropriately positioning the tip of the suppression piece, it is possible to create handwriting whose line width does not change regardless of the amount of writing pressure. It is possible to obtain handwriting with a calligraphy-like line width that changes depending on the amount of writing pressure.

Therefore, depending on the type of document being written or the location of the document being written, it is possible to create sharp handwriting with a single fountain pen.
It is not necessary to prepare several types of fountain pens with pens suitable for the purpose, and it is economical and convenient to carry.

In particular, the proposed fountain pen has a gap between the suppressing piece and the surface of the pen to the extent that no capillary action occurs. Since the pen contacts the surface of the pen at positions facing each other with a slight distance from each other, and moves back and forth while maintaining the above-mentioned position, the ink cannot be drawn out from the cut between the presser piece and the pen. The pen is not stained by ink.

Ink does not adhere to the inner surface of the cap when the cap is fitted, and it does not contaminate clothing pockets or sheaths when carried.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view with two parts of the main plan removed, and Figure 2 is a vertical cross-sectional view of the first part.
The plan view shown in the figure is a plan view, and FIG. 3 is an end view taken along the line ■--■ in FIG. 1. 12... Pen, 14... Surface of pen, 15... Gap, 16... Pressing piece, 18... Tip of pressing piece, 19
, 19, . . . protrusion, 21 . . . cut.

Claims (1)

[Scope of utility model registration request] In a fountain pen whose elasticity can be changed by moving a pressing piece back and forth on the surface of the pen, a pressing piece 16 is provided with a gap 15 between it and the surface 14 of the pen 120, and the pressing piece 1
The protrusions 19, 19□ provided at both ends of the tip 18 of the pen 12 are in constant contact with the surface 14 of the pen 12 as the pressing piece 16 moves back and forth at a position facing and slightly spaced from the cut 21 formed on the pen 12. A fountain pen that can be moved.