JPS5916228Y2 - writing implements - Google Patents

Description

[Detailed description of the invention] The present invention is applicable to brush tips that can be used for brushes, sketching brushes, makeup brushes such as eyeliners, and brush-like pen nibs such as synthetic resin pen nibs that can produce brush-like handwriting. Alternatively, there are brush-like writing instruments that require a relatively large amount of ink in which the ink is forcibly sent out from the ink chamber during writing, or pens with a raw ink structure that has built-in pigment-based ink. This relates to the improvement of writing implements, and its purpose is to prevent ink from dripping when it is forcibly delivered to the pen tip, and to prevent ink from running out during writing.

Conventionally, various mechanisms for regulating ink outflow have been devised.

A typical example is an ink flow rate regulating comb commonly known as a bellows structure, but this has a complicated structure and cannot be manufactured at low cost. In this case, the ink flow rate regulator could not absorb the liquid pressure during the delivery, and the ink was delivered straight to the writing pen tip, causing the risk of dripping.

In addition, a method with a simple structure, for example, as disclosed in Japanese Utility Model Publication No. 48-36844, has a porous suction ink storage device arranged around the pen tip, and the ink that flows out excessively is temporarily stored in the ink storage device. There is also a type that allows the ink to be left in the pen, but if it is used in a writing instrument that forcibly sends ink out, like the one in this invention, the ink from the ink chamber will be sent straight to the nib, similar to the drawbacks mentioned above. The drawback is that the ink cannot be held completely within the pen nib, which tends to cause dripping.

In the present invention, an ink discharge control member is disposed at a portion where ink forcibly discharged from the ink chamber flows into the ink relay wick and at a portion where ink discharged from the tip of the ink relay wick flows into the pen nib. Prevents ink from being ejected straight to the pen tip and dripping, and absorbs excess ink by installing an ink absorber around the outer periphery of the ink relay core to prevent ink from running out while writing. This is what I did.

Next, each embodiment of the present invention shown in the accompanying drawings will be described in detail.

1 to 4 show a first embodiment of the present invention, in which numeral 1 denotes a rear shaft which can be deformed by pressure and is made of, for example, flexible synthetic resin, and has an ink chamber 2 inside, which is connected to a front shaft 3 by screws. It is fixed.

4 has the ink hole 4a in the center, and the rear (towards the right in the figure)
It has a protrusion 4b that fits into the ink outlet 1a at the tip of the rear shaft 1, and a protrusion 4d with a cut 4C in the side wall at the front (leftward in the figure), which is press-fitted into the front shaft 3. It is a fixed inner stopper.

5 is a holder which has a flange 5a on the rear end, a window hole 5b on the middle side wall, and a cut 5C on the rear end side wall, and a tip 7 with a pen tip 6 attached to the tip is fitted, and the middle inside has a holder with a slit 5C. An ink relay wick 8, which is made of a bundle of axially oriented bosster fibers, acrylic fibers, etc., and which allows ink to flow mainly in the axial direction, is fitted therein, and an ink storage body 9 made of sponge or the like is fitted around the outer periphery of the holder 5. It is arranged.

Ink discharge control members 10 and 11 made of a porous material such as a sponge or nonwoven fabric are disposed at the tip and rear ends of the ink relay core 8 to discharge ink at least in the axial direction and laterally, and The rear end is brought into contact with the ink discharge control member 10, the protrusion 4d of the inner plug 4 is fitted into the center hole of the flange 5b of the holder 5, and the tip of the protrusion 4d is brought into contact with the ink discharge control member 11.

Regarding the capillary gap between the ink relay core 8 and the ink discharge control member 10.11, in order to prevent the ink from reaching the pen tip straight, the ink discharge control member 10.11 is set closer to the ink relay core 8 than the ink discharge control member 10.11. In addition, instead of using a porous material such as a sponge or nonwoven fabric as an ink discharge control member, it is preferable to keep the ink tightly closed. may be set.

Next, the effect will be explained.

When the rear shaft 1 is pressed during writing, the ink in the ink chamber 2 passes through the center hole 4a of the inner stopper 4 and is ejected from the tip and the cutout 4C toward the ink ejection control member 11 and the sides.

The ink discharged to the ink discharge control member 11 is controlled in its axial direction due to the configuration of the control member 11, so that some of the ink flows in the axial direction and some of it is pushed out to the side and is pushed out to the slit 4C. The ink storage body 9 together with the ink discharged from the
absorbed into.

The ink that has flowed in the axial direction passes through the ink relay core 8 and flows in the axial direction.

Then, the flow is further controlled by an ink discharge control member 10 disposed at the tip of the ink relay core 8, and the ink is gradually discharged to the pen tip 6.

When the ink in the pen nib 6 decreases during writing, the ink in the ink storage body 9 enters inside the ink relay core 8 from the outer periphery and flows out to the pen nib 6.

FIG. 5 shows a second embodiment of the present invention, in which the rear end of the holder 12 is integrally or separately formed with a disc 12b provided with a large number of small holes 12a, and a protrusion 4d of the inner stopper 4 is provided. is in contact with the disk 12b.

The other structure is the same as the first embodiment.

A part of the ink discharged from the tip of the center hole 4a of the inner plug 4 and the slit 4C passes through the center of the many small holes 12H to the discharge control member 11, and a part passes through the small holes 12a on the outer periphery. The ink is discharged to the ink storage body 9.

Further, the ink relay core may have two or more ink relay cores 13a and 13b arranged in series as shown in FIG. In the former case, the flow of ink discharged into the ink relay wick in the axial direction is adjusted by the boundary surface, and the axial cylinder 1 is carelessly pressed many times, resulting in a large amount of ink being ejected. Even if it is sent out, it is expected to have an even better effect in that it does not reach the pen tip directly, and in the latter case, the ink relay core can be easily inserted into the holder, and other functions are fully satisfied. Since it is superior in this point, it may be covered with a nonwoven fabric or the like instead of the film 14.

According to the present invention, the ink forcibly discharged from the ink chamber does not flow straight into the ink relay wick, but is controlled to flow sideways by the ink discharge control member, and this ink is absorbed into the ink storage body. The ink that flows out from the tip of the ink relay core gradually flows into the nib through the ink discharge control member, so the ink does not drip from the nib, and when the ink at the nib becomes low during writing, it is rolled around the outer periphery of the ink relay core. Since the ink in the ink absorber, which is the rotor, flows to the ink relay core and flows to the pen tip, there is no possibility of running out of ink.

In addition, when a brush-like nib is used as a pen nib, which requires a relatively large amount of ink when writing, the effect is remarkable.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of the first embodiment of the present invention, and Fig. 2 is a front sectional view of the first embodiment of the present invention.
An exploded perspective view of the main parts of the figure, Figure 3 is III-III of Figure 1.
4 is a sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is a front sectional view of the main part of the second embodiment of the present invention, and FIG. 6 is a front view of another embodiment of the ink relay core. , FIG. 7 is a partially cutaway front view of still another embodiment of the ink relay core. 1... Rear shaft, 2... Ink chamber, 3...
...Front shaft, 6...Brush-like nib, 8...
... Ink relay core, 9 ... Ink absorber, 1
0.11...Ink discharge control member.

Claims (1)

[Scope of utility model registration request] An ink discharge control member made of a porous material that discharges ink at least in the axial direction and sideways is disposed at the rear end of the pen tip and at the tip of the ink passage hole in the ink chamber, and the ink discharge control member is disposed between the two ink discharge control members. A relay core is installed that allows ink to flow mainly in the axial direction.
A writing instrument comprising an ink storage body arranged around the outer periphery of the ink relay core.