JP4963170B2 - Writing instrument - Google Patents

Description

  The present invention relates to a writing instrument, and more particularly to a writing instrument that can efficiently prevent ink from flowing out to the air passage side by its own weight when the body is reversed and carried.

  Generally, a writing instrument is composed of an ink tank in which ink is stored, and a core body that draws out ink in the ink tank using a capillary phenomenon so that writing can be performed.

  On the other hand, when the core receives ink supply directly from the ink tank, it is not easy to adjust the ink outflow through the core, so after temporarily storing the ink in the ink tank between the core and the ink tank, An absorption reservoir that can be supplied is formed to prevent excessive spillage of the ink.

An air passage for smooth ink flow is formed on the rear side of the absorption storage body.
In such a writing instrument, after the ink stored in the ink storage unit is absorbed and stored in the absorption storage body, the ink is flowed to the core body in the writing process, and writing is performed.

  However, the conventional writing instrument having a mixing ball in the ink storage part, when the ambient temperature changes during the use process, the ink absorbed and stored in the absorption storage body flows out to the air passage side due to bulk expansion, and the discharged ink is There is a problem that the air passage is clogged or flows out of the body due to wetness due to sticking force with the body surface.

  In addition, when carrying with the writing instrument reversed or when an impact is applied to the rear side, the ink stored in the absorption storage body flows out to the air passage side due to inertial flow, and the ink that has flowed out as described above Has problems such as clogging of the air passage and outflow to the outside of the body due to wetness due to adhesive force with the body surface.

  The present invention relates to a writing instrument, and more specifically, in a writing instrument including an ink tank, a core, and an absorption storage body, the ink storage tank has an outflow restricting body on the ink tank side and is absorbed by the absorption storage body. Absorbs the volume expansion due to the temperature change of the ink to prevent it from flowing out to the air passage side, and even when carrying the body with the body reversed, the ink can efficiently flow out to the air passage side due to its own weight. It aims to be able to prevent.

  Another object of the present invention is to form an absorption-preventing layer coated with a surfactant on the contact surface on the absorption reservoir side of the outflow restrictor to suppress the ink inflow to the air passage side to the maximum, The purpose is to facilitate the supply.

  Still another object of the present invention is to provide an outflow blocking body in which pores are formed more densely than the outflow limiting body on the ink tank side of the outflow limiting body and are absorbed by the outflow limiting body by bulk expansion or impact flow. An object of the present invention is to prevent ink from flowing into the air passage due to wetness due to adhesive force with the body.

  Still another object of the present invention is to provide a storage cylinder cap on the ink tank side of the spill restrictor so that ink that has flowed into the spill restrictor due to bulk expansion or impact flow flows into the air passage side. It is intended to shut off.

The present invention relates to an ink tank (230) for storing ink, and an absorption storage body that has pores and temporarily stores ink supplied from the ink tank (230) through a nozzle-shaped ink outflow pipe (231). (221), a core (210) that draws ink stored in the absorption storage body (221) by using a capillary phenomenon, and is formed so as to be accommodated in the ink tank (230). In addition, an absorption storage cylinder (222) that houses the absorption storage body (221) therein, an outer peripheral surface of the absorption storage cylinder (222), the ink tank (230) side and the core body (210) in writing implement air for ink flow communicates the side with an air passage (240) supplied to the absorber reservoir (221), said ink tank (230) side of the absorber reservoir (221) to, together with the ink outflow pipe (231) penetrates, is formed in a shape capable of accommodating the said absorbent storage tank (222) As absorbency than the absorbent reservoir (221) is lowered, larger pores than the absorbent reservoir (221), outflow restriction body density is a low foam comprising a (110), the outflow restriction The surface of the body (110) is coated with a surfactant on the contact surface of the absorption storage body (221), and the ink absorbed in the absorption storage body (221) moves to the ink tank (230) side. An absorption preventing layer (111) for suppressing is formed.

  As described above, the present invention can prevent the ink stored in the absorption storage body from flowing out into the air passage due to bulk expansion or impact, etc., and blocking the air passage or out of the body. It is a thing.

  That is, according to the present invention, in a writing instrument composed of an ink tank, a core, an absorption storage body, and an absorption storage cylinder, the pores are formed larger on the ink tank side of the absorption storage body than the absorption storage body and the density is low. It has a restriction body.

  Accordingly, the present invention provides an outflow restrictor on the ink tank side of the absorption storage body so that the ink flowing out to the ink tank side can be absorbed and stored by the bulk expansion or impact flow of the ink. This prevents clogging of the air passage by ink flowing out to the side or outflow of ink to the outside of the body.

  In addition, by forming an anti-absorption layer coated with a surfactant on the contact surface on the absorption storage body side of the outflow restrictor, ink inflow to the ink tank side is suppressed to the maximum, and air supply to the absorption storage body is smooth Done.

Further, the invention according to claim 2 is that the ink outflow pipe (231) penetrates the ink tank (230) side of the outflow restricting body (110) and can be accommodated in the absorption storage cylinder (222). And an outflow blocking body (112) having a pore shape denser than the outflow restriction body (110).

Furthermore, the invention according to claim 3 is formed so that the ink outflow pipe (231) penetrates, and the ink flowing into the outflow restricting body (110) is transferred to the ink tank of the absorption storage cylinder (222). A storage cylinder cap (120) that structurally blocks the flow into the air passage (240) from the (230) side is provided.

  Accordingly, the present invention includes the outflow restricting body in which the absorption storage layer-side contact surface is formed on the absorption storage body side contact surface, so that the ink inflow to the ink tank side is suppressed to the maximum due to the bulk expansion or impact flow of the ink. The clogging of the air passage due to the ink flowing out to the side or the outflow of ink to the outside of the body is prevented.

  Further, by providing an outflow blocking body having pores denser than the outflow restriction body on the ink tank side of the outflow restriction body, the ink absorbed in the outflow restriction body by bulk expansion or impact flow can be applied to the body. It is possible to prevent the ink from flowing into the ink tank due to wetting.

  Furthermore, by providing a storage cylinder cap behind the outflow restrictor, the ink that has flowed into the outflow restrictor due to bulk expansion or impact flow can be structurally blocked from flowing into the air passage side. It is useful.

Hereinafter, it will be described with reference to the accompanying drawings.
The present invention is designed to prevent clogging of the air passage (240) due to ink flowing out due to a change in temperature of the ink due to temperature change and impact flow, or to prevent the flowing out ink from flowing out of the body. An ink tank (230), an absorption storage body (221) having pores and temporarily storing ink supplied from the ink tank (230) via a nozzle-like ink outflow pipe (231), and the absorption storage A core body (210) that draws ink stored in the body (221) by capillary action so that writing can be performed, and is formed so as to be accommodated in the ink tank (230). An absorption storage cylinder (222) for storing the storage body (221), and an outer peripheral surface of the absorption storage cylinder (222) communicating the ink tank (230) side and the core body (210) side with ink flow Supply air to the absorption storage body (221) In a writing instrument provided with a passage (240), the ink outflow pipe (231) penetrates the absorption storage body (221) on the ink tank (230) side and can be accommodated in the absorption storage cylinder (222). An outflow restricting body (110) made of a foam having a pore size larger than that of the absorption storage body (221) and a low density so that the absorption capacity is lower than that of the absorption storage body (221 ). The surface of the outflow restrictor (110) is coated with a surfactant on the absorption storage body (221) side contact surface, and ink absorbed in the absorption storage body (221) is contained in the ink tank (230). An absorption preventing layer (111) that suppresses movement to the side is formed.

Here, the air passage (240) formed on the outer peripheral surface of the absorption storage cylinder (222) linearly communicates the ink tank (230) side and the core body (210) side in the longitudinal direction.
The outflow restricting body (110) is fitted and joined to the outer peripheral edge of the ink outflow pipe (231) formed so as to protrude from the ink tank (230) and be supplied to the absorption storage body (221). It is formed in a donut shape with a central part penetrated so that it can be made.

  On the other hand, as an embodiment of the present invention shown in FIG. 3, the ink absorbed in the normal absorption storage body (221) can be prevented from moving to the outflow restriction body (110) by capillary flow. It can be carried out by forming an absorption preventing layer (111) coated with a surfactant on the absorption storage body (221) side of the flow restrictor.

  Further, as another embodiment of the present invention shown in FIG. 4, the ink stored in the outflow restrictor (110) due to bulk expansion or impact flow may be absorbed by the sticking force with the body, etc. 222) to the air passage (240) from the ink tank (230) side, the air tank (230) side of the outflow restrictor (110) is more porous than the outflow restrictor (110). It is preferable to carry out with the outflow blocker (112) formed densely.

  In addition, the ink tank (230) side of the outflow restrictor (110) is structurally blocked from flowing into the air passage (240) side of the ink that has flowed into the outflow restrictor (110) due to bulk expansion or impact flow. It can be implemented with a storage cylinder cap (120) as possible.

As described above, the ink tank (230) for storing ink and the absorption storage for temporarily storing the ink supplied from the ink tank (230) through the nozzle-shaped ink outflow pipe (231) while having pores A body (221), a core body (210) that draws ink stored in the absorption storage body (221) using a capillary phenomenon, and can be stored in the ink tank (230). An absorption storage cylinder (222) that is formed and accommodates the absorption storage body (221) therein, and the ink tank (230) side and the core body (210) on the outer peripheral surface of the absorption storage cylinder (222) ) Side and an air passage (240) for supplying air for ink flow to the absorption storage body (221) in a writing instrument, the ink tank (230) of the absorption storage body (221) on the side, together with the ink outflow pipe (231) penetrates, formed into a shape that can be accommodated in the absorbent storage tank (222) Is, as absorbency than the absorbent reservoir (221) is lowered, larger pores than the absorbent reservoir (221) comprises outflow restriction body density is a low foam (110), said The contact surface of the outflow restrictor (110) on the absorption storage body (221) side is coated with a surfactant, and the ink absorbed in the absorption storage body (221) moves to the ink tank (230) side. In the application of the present invention in which the anti-absorption layer (111) that suppresses this is applied, when the ink stored in the absorption storage body (221) expands due to a change in ambient temperature, the expanded ink flows. This is absorbed by the flow-out restricting body (110) that is likely to flow, and the phenomenon that the expanded ink flows out through the core body (210) due to pressure or the like or clogs the air passage (240) is prevented.

  In addition, when carrying with the writing instrument reversed, ink that has flowed due to its own weight or ink that has flowed due to impact, etc. is also temporarily absorbed by the outflow restrictor (110) and then re-supplied to the absorption reservoir (221). You can make it.

  On the other hand, by forming the anti-absorption layer (111) coated with the surfactant on the outflow restricting body (110) on the absorption storage body (221) side, in the use process, the above outflow restricting body (110) is more than necessary. It is possible to prevent the ink from getting wet.

  Further, as in another embodiment of the present invention, the outflow restrictor (110) is provided with an outflow blocker (112) or a storage cylinder cap (120) having a denser pores behind the outflow restrictor (110). ) Is effectively blocked from flowing out to the air passage (240) side.

  Further, in the assembly process of the absorption storage body (221), the dense portion (221a) (221b) is pressed by applying pressure to the contact portion of the absorption storage body (221) with the ink outflow pipe (231) and the core body (210). And the capillary force of the portion is strengthened, so that the ink flows out uniformly through the core body (210), and the ink in the ink tank (230) is rapidly absorbed excessively by an impact load ( 221) is blocked from flowing.

Further, an air passage is formed by the opening of the storage cylinder cap (120), the outflow blocking body (112), the outflow restricting body (110), the absorption preventing layer (111), the absorption storage body (221), and the ink outflow pipe (231). The ink tank (230) side of (240) communicates with the ink tank (230), and air for ink flow can be supplied to the ink tank (230).

  The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The exploded perspective view showing one example concerning the present invention. 1 is a side sectional view showing an embodiment according to the present invention. The detailed sectional view showing one example concerning the present invention. The detailed sectional side view which showed the other Example which concerns on invention.

110 ... Outflow restricting body 111 ... Absorption preventing layer 112 ... Outflow blocking body 120 ... Storage cylinder cap 210 ... Core body 221 ... Absorption storage body 222 ... Absorption storage cylinder 230 ... Ink tank 231 ... Ink outflow pipe 240 ... Air passage

Claims (3)

An ink tank (230) for storing ink;
An absorption reservoir (221) having pores and temporarily storing ink supplied from the ink tank (230) via the nozzle-like ink outflow pipe (231);
A core body (210) that draws ink stored in the absorption storage body (221) using capillary action so that writing can be performed;
An absorption storage cylinder (222) that is formed so as to be accommodated in the ink tank (230) and accommodates the absorption storage body (221) therein,
Air that supplies air for ink flow to the absorption storage body (221) by communicating the ink tank (230) side and the core body (210) side with the outer peripheral surface of the absorption storage cylinder (222) In a writing instrument with a passage (240),
On the ink tank (230) side of the absorption storage body (221),
Together with the ink outflow pipe (231) penetrates, is formed in a shape capable of accommodating the said absorbent storage tank (222), such that the absorption force than the absorbent reservoir (221) is lowered, the absorbent reservoir (221) provided with an outflow restrictor (110) made of a foam having a larger pore and lower density,
On the absorption storage body (221) side contact surface of the outflow restriction body (110),
A writing instrument, wherein a surfactant is coated to form an absorption preventing layer (111) that inhibits ink absorbed in the absorption storage body (221) from moving toward the ink tank (230). . On the ink tank (230) side of the outflow restrictor (110),
The ink outflow pipe (231) passes therethrough, and is formed in a shape that can be accommodated in the absorption storage cylinder (222), and includes an outflow blocking body (112) having pores denser than the outflow restriction body (110). The writing instrument according to claim 1. On the ink tank (230) side of the outflow restrictor (110),
The ink outflow pipe (231) is formed in a penetrating shape, and the ink that has flowed into the outflow restriction body (110) flows from the ink tank (230) side of the absorption storage cylinder (222) to the air passage (240). The writing instrument according to claim 1 or 2, further comprising a storage cylinder cap (120) for structurally blocking inflow.

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