JPH052990U - Writing instruments directly filled with water-based ink - Google Patents

Abstract

(57) [Abstract] [Purpose] A water-based ink stored in a barrel 8 is directly guided to a writing end 2 by an ink guiding core 4 with a pen core member 1 having a ventilation groove 1a communicating with the outside. A so-called direct-packing type writing implement that realizes no problem in ink supply even when left standing for a long time with the writing end 2 facing upward. [Structure] An ink reservoir portion 6 having a capillary force inferior to that of the ink guide core 4 is ventilated in a void portion 5 in a barrel 8 formed when the brush tip 2 is turned upside down. While installing, the ink cylinder 6 is attached to the ink reservoir 6.
The ink guide core 4 is brought into contact with the capillary action portion 7 extending to the inner bottom portion 8a side and provided on the inner wall surface 8b of the barrel. The ink reservoir 6 is constantly supplied with ink from the capillary action portion 7 in the ink to store the ink.
Easy ink supply.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This proposal has a ventilation groove that communicates with the outside world, and an ink reservoir that temporarily stores ink. Ink lead core for water-based ink stored directly in the barrel through the pen core member The present invention relates to the improvement of a so-called direct-packing type writing instrument which is guided to the end of the writing brush.

[0002]

[Problems to be solved by the prior art and the present proposal]

  Conventionally, from the viewpoint of maintaining the stability of the water-based ink stored directly in the barrel, the barrel In order to respond to internal and external pressure fluctuations reliably and swiftly, the expansion air is exhausted and the overflow air is discharged. So-called direct packing with a pen core member intervening in the role of storing the ink inside the barrel Writing instruments are widely known. However, with this type of direct packing type, When it is turned upside down, a gap is formed in the shaft cylinder. Therefore, if such an inverted state continues for a long time, the stored ink in the ink reservoir will disappear. As the ink wears, the drying phenomenon of the ink induction core increases, and the ink flows to the brush edge. It may be impossible.

[0003]

[Means for solving problems]

  The present proposal was made in view of the state of the art described above, and the brush end is directed upward. When it is turned upside down, the empty space formed between the ink stored in the barrel and the ink guide core. Ink that can be ventilated in the gap and has a capillary force inferior to that of the ink induction core Install a reservoir and extend to this ink reservoir up to the bottom side inside the barrel. The ink guiding core is brought into contact with the rib-like capillary action portion arranged on the inner wall surface of the shaft cylinder. That is the way to solve the problem.

[0004]

[Action]

  According to the present plan, even when the brush end is turned upside down, the ink stored in the barrel is not stored. Will always be stored in the ink reservoir via the capillary action section, By the capillary action of the ink guide core that comes into contact with the reservoir, smooth ink is applied to the brush end. Supply is guaranteed.

[0005]

【Example】

  An embodiment of the present invention will be described below with reference to the drawings.

[0006]   The pen core member 1 is formed integrally with the pen tip holder-2a that holds the pen tip 2. And the ventilation groove 1a communicating with the air hole 3 opening to the outside and the ink temporarily. It has an ink reservoir portion 1b that stores it selectively. Ink supply to the brush end 2 G It is realized by the induction by the induction core 4.

[0007]   As illustrated in Fig. 1, when the brush tip 2 is turned upside down, the ink guide core The ink reservoir 6 is provided in the gap 5 formed between the end of the ink 4 and the surface of the ink i. It is installed. The ink reservoir 6 can be ventilated and the capillary force of the ink guide core 4 Any shape and material can be used as long as it has inferior capillary force. If you consider the amount of storage or the contact structure with the ink guide core 4, A sponge material which is a certain porous material or a fiber material is suitable, and further, the capillary action portion 7 Considering the contact structure of the above, it is preferable that the mounting in the void 5 is performed in a close-fitting manner. Good

[0008]   Further, the capillary action portion 7 that comes into contact with the ink storage portion 6 is located on the side of the bottom portion 8 a in the barrel 8. It is necessary to be provided on the inner wall surface 8b of the shaft cylinder while The ink can be set appropriately, but the stored ink can be stored more reliably, quickly, and in large quantities. From the viewpoint of guiding the ink to the ink reservoir, it is preferable to install it in two or more locations. Yes. Furthermore, the capillary action portion 7 may have any structure as long as it has a capillary action. It may be present, but the rib-shaped one having the narrow groove 7a as adopted here is the shaft. This is advantageous in that the simplicity of the forming process, such as the integral molding with the tube 8, can be obtained.

[0009]

【effect】

  Since this plan has the above-mentioned configuration, it is upside down with the brush end facing up. Even if it is left for a long time in the state, the capillary action of the capillary action part in the ink in the barrel causes As a result, the ink accumulates in the ink reservoir, and as a result, such an inverted state continues. The bad effects caused by the separation of the ink induction core and the ink caused by the At times, it is possible to immediately supply a smooth ink to the brush end via the ink guide core. To be realized.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view illustrating an entire writing instrument that implements the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

1 Pen core member 1a Ventilation groove 1b Ink reservoir 2 brush ends 3 air holes 4 Ink induction core 5 void 6 Ink storage section 7 Capillary action part 8-axis cylinder 8a Shaft cylinder inner bottom i Water-based ink

Claims (3)

[Scope of utility model registration request] 1. An ink guide core having a ventilation groove communicating with the outside and an ink reservoir, and a pen core member mounted in the barrel is used to guide the aqueous ink contained in the barrel to the brush end. In the writing instrument of the present invention, when the writing end portion 2 is turned upside down, it is possible to ventilate the space 5 formed between the surface of the ink i contained in the barrel 8 and the end portion of the ink guiding lead 4 and the ink guiding lead. An ink reservoir 6 having a capillary force inferior to that of No. 4 is mounted, and the ink reservoir 6 extends to the side of the bottom 8a of the barrel 8 and the inner wall surface 8 of the barrel.
A writing instrument directly filled with a water-based ink, characterized in that the capillary action portion 7 disposed in b and the ink guide core 4 are brought into contact with each other. 2. The aqueous solution according to claim 1, wherein the ink storage portion 6 to be mounted in the shaft cylinder 8 is formed of a flexible porous material and is tightly fitted in the void portion 5. A writing instrument filled with ink directly. 3. A capillary action portion 7 disposed on the inner wall surface 8b of the barrel.
3. The writing instrument directly filled with the water-based ink according to claim 1 or 2, wherein the writing instrument is formed into a rib shape having a narrow groove 7a, and a plurality of the grooves are arranged.