JP2000153692A - Collector for writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate problems of a jetting-out under a controlled pressure, and a direct flowing of a corrector writing utensil, without deteriorating the appearance and the cost. SOLUTION: In this direct liquid type collector writing utensil, an air groove 15 is alternately provided at a location which is on the surface on the ink groove side and in the close vicinity of the ink groove, and on the surface which is confronted with the ink groove 14, and the air grooves 15 are vent a plurality of times, at least twice, by bending them with a connection groove having a cross sectional area which is smaller than the cross sectional area of blades so that the air grooves at least on the peripheral edge side of an ink tank, at an intermediate section, and on the front end side may not go through under a linear state, in order to soften a jetting-out due to a sudden movement to a collector holding groove from the ink tank. Also, the effect is batter when a communicating hole which communicates with the peripheral edge of a central core inside, is provided with at least one of the ink holding grooves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a writing instrument such as a ball-point pen, a felt-tip pen and a fountain pen having a pen point at the tip as a writing portion, and an ink tank for directly storing ink and a capillary phenomenon for adjusting the internal pressure inside. The present invention relates to an improvement of a direct liquid type collector-type writing instrument provided with a collector as a plurality of wing-shaped adjusting bodies and a means for guiding ink from an ink tank to a pen tip. In particular, the present invention relates to improvement of a collector corresponding to a sudden change in temperature or pressure.

[0002]

2. Description of the Related Art Conventionally, oil-based ballpoint pens are used to reduce the incidence of a backflow problem that causes the ink to flow from the pen tip and causes the ink to fall down when the ink is directed upward, thereby soiling clothes and making writing impossible. In general, high-viscosity ink of about 3,000 to 10,000 mPa S is used for the purpose of preventing the movement of the ink, and the capillary force is increased by making the ink tank thinner. There are problems such as writing feeling, dents, unevenness of writing lines, and low density.

There is known a so-called batting pen in which the filling of a fiber bundle is impregnated with a low-viscosity ink of several mPa S so that the ink is guided to the pen tip via an ink guiding core. At first, the ink flow rate is large and a dark drawing line is obtained, but the flow rate gradually decreases with writing, and there is a problem that the writing line becomes thin. In order to improve the derivation of ink from the batting, it is recommended to set the capillary force of the batting to be weaker, but the impact of dropping etc. will cause ink to leak from the batting and increase the rate of blowout that stains clothes, In addition, when the capillary force of the batting is increased, the ink flow rate decreases drastically in accordance with writing, and there is also a problem of ejection property that the writing line becomes considerably thin in the latter half of the life even though the ink remains sufficiently.

In order to solve the above-mentioned drawbacks of the oil-based ballpoint pen and the batting-type writing implement, an ink tank 3 for directly storing the ink 2 as shown in FIG. A so-called collector-type ink direct storage type writing implement (hereinafter referred to as a collector writing implement) is known which employs a mechanism used in a fountain pen for adjusting the internal pressure of air replacement during writing by a collector 6. The collector writing instrument has the advantage that the flow rate of ink 2 is equal to or greater than the initial value of the batting type writing instrument, and it is possible to write with a thick drawing line without a temporary decrease in the amount of ink flow until the end without applying pressure. However, the ink tank 3 needs to have a larger diameter than the oil-based ball-point pen, so that the ink 2 generally has a capacity of about 1 to 3 cc.
Has been stored.

In a collector writing instrument, when there is a fluctuation in the atmospheric pressure of the outside air, the ink 2 is moved between the collector 6 and the ink tank 3 (or air is taken in / out from the thin ink groove 14) to adjust the internal pressure and to adjust the pen pressure. The ink 2 is prevented from leaking from the tip 9 of the tip 1. It is general to provide a cap 17 for simultaneously sealing and sealing the air hole 10 and the pen tip 1 by using an undercut of the entire circumference in order to prevent the volatilization of the ink 2. The internal pressure changes inside the collector 6
As a drawback, there is a pumping phenomenon in which the ink 2 fills up inside and finally the ink 2 comes out of the air hole 10 beyond the limit that can be reserved.

[0006] When pressure reduction and high pressure are repeated, such as temperature change, air pressure change in an airplane, and altitude difference, the drawback that a blowing phenomenon occurs also occurs by the same mechanism as described above. The pumping phenomenon is caused by the movable inner cap 1
8 can be solved by devising a known device such as providing a sealing surface by contacting the end surface of the rubber (not shown). In order to solve the problem, solutions such as increasing the maximum ink retention of the collector 6 (increase the diameter and length) and reducing the size of the ink tank 3 are conceivable.
The shaft size becomes large, causing a problem in appearance, the amount of ink is reduced, the life is shortened, and the cost performance is reduced.
The ink head to the height becomes high and it becomes easy for direct current,
In order to solve the problem with the ink 2, there is a disadvantage that the ink must be made extremely hard to wet and the writability must be sacrificed.

When the cap 17 is opened at about 1 atmosphere above the ground and the cap 17 is opened while the pressure inside the aircraft is changed to about 0.8 atmosphere, the pen body is The inside is instantaneously exposed to a pressure of 1 atm to 0.8 atm of the outside air, and the ink 2 in the inside is rapidly jetted through the air groove 15 in the collector 6 to sufficiently supply the ink 2 to the holding groove 13 of the collector 6. There is a problem that the ink 2 blows out from the air hole 10 at the tip without holding.

For the purpose of solving the problem of blowing in the state of changing air pressure, Japanese Utility Model Publication No. 3-31580 and Japanese Utility Model Publication No. 3-315.
Inventions such as 81 have been made. Regarding these, the air groove of the retaining groove in the middle part of the collector is provided with two notches at different circumferential positions and symmetrical positions from the air groove of the adjacent retaining groove, so that the ink that has been jetted Are divided into left and right sides to prevent the ink from flowing directly into the air holes.

However, according to these inventions, when the ink reaches the wing portion having the two notches in the ink retaining groove during the normal slow internal pressure adjustment, air cannot be replaced, and the wing portion having the two notches is formed. Among them, there is a problem that the ink cannot be retained in a part on the side opposite to the ink groove, and the amount of the ink 2 that can be retained decreases. In addition, even if the shape of the present invention is taken at one location of the central holding groove, the ink is not held in the portion of the holding groove from that position to the rear in the axial direction at the time of a sudden pressure change in the aircraft, and the jet flow Although the effect of weakening the ink at one place is obtained, the ink cannot be retained at all, so that a blowout occurs.

It is conceivable to provide a plurality of retaining grooves having two notches as described above at a plurality of locations. In this case, however, the above-mentioned portions where the ink cannot be retained increase, and when the pressure is increased or decreased, the above-described conventional method is required. As the volume for holding ink slowly decreases, it becomes necessary to use a larger collector, resulting in a larger shaft diameter, a reduced ink loading amount, and a shorter writing tool life. It has drawbacks.

The invention of Japanese Patent Application Laid-Open No. 9-104194 is disclosed for the purpose of solving the problem of the efficiency of ink retention, but in the present invention, the ink groove (the name in the invention is a gas-liquid exchange groove, hereinafter the same) (Not shown) and an air groove (abdominal groove) are separated via a partition plate, and when ink enters the inside of the collector (pen core), there is an ink groove of a retaining groove (retaining groove). The ink is gradually filled from one end in the rotation direction and is filled toward the other end.

According to the present invention, when the cap is opened and closed under pressure, the ink flows in the air groove as a jet, and as a result, the ink is blown out without effectively using the ink holding of the collector. It has the same problem as the above two inventions that occur.

Further, according to the present invention, when the air groove side is wetted with ink due to a sudden jet of ink or scattering of ink due to an impact when the pen body is dropped, the ink flow at the time of suspension is changed in one direction. Because of this structure, most of the retaining grooves are sealed with ink on both the ink groove side and the air groove side of the thin vertical groove, and the air groove is no longer present Since the air in the retaining groove cannot be replaced and the function as the adjusting body cannot be exhibited, there is a disadvantage that blowing and direct current are easily generated.

In the state of pressurization and decompression, the above-described collector 6
In addition to the problem of the jet of the ink 2 in the portion, there is also a problem of a direct current in which the ink 2 leaks from the tip 9 of the pen tip 1 because pressure is also applied to the inside of the pen tip 1. There has been a demand for a device in which the pressure inside the pen tip 1 is not directly applied to the tip 9 of the pen tip at the time of pressurization and decompression.

[0015]

SUMMARY OF THE INVENTION The object of the present invention is mainly to improve a general-purpose collector-type writing instrument. The need to reliably improve the accident prevention performance of writing instruments, such as the ability to prevent ink leakage due to the effects of pressurization and decompression, and the ability to prevent blowout and direct current when stored for a long time at stores, etc. In addition to simultaneously solving the problem of preventing major drawbacks such as soiling of consumer's clothes due to repeated pressurization and decompression on aircraft, and the problem of demanding a slim appearance with a collector type that tends to be thicker, The purpose is to solve the above problems without impairing the excellent writing performance of the collector writing implement.

[0016]

In order to solve the above-mentioned problems, a writing instrument according to the present invention comprises a pen tip 1 having a writing portion at a tip 9.
In addition, a ballpoint pen having ink guiding means utilizing capillary force, such as ink guiding cores 7 and 8 for securing a flow path from the ink tank 3 to the tip 9 of the writing portion, or the ink guiding cores 7 and 8 themselves become the pen tip 1. It is a felt-tip pen and markers. A collector 6 is provided between the bottomed cup-shaped ink tank 3 and the pen tip 1 to provide a ventilation groove 11 to the outside air, an air groove 15, a thin and long ink groove 14 serving as a gas-liquid exchange groove, and a clearance between the wing 12. Are arranged with a plurality of appropriate setting widths, and the internal pressure inside the pen body is adjusted by allowing the ink 2 to flow into and out of the retaining groove 13.

An effective means of the present invention is that the collector 6 is removed from the ink tank 3 when the temperature or pressure changes suddenly.
In order to alleviate the blowout due to the rapid movement of the ink groove 14 into the retaining groove 13, the notch (or groove) of the air groove 15 is located on the surface on the ink groove 14 side of each block, and Provided alternately around the opposing surface side (15a, 15
b, 15c...) and the connecting groove 22 (22a, 22b, 22b, 22b, 22c) having a cross-sectional area smaller than the cross-sectional area of the wing two or more times so that the air groove 15 does not penetrate linearly in the axial direction.
22c...), And preferably three or more times so as to be divided into four or more blocks A, B, C, and D.

In addition, at least one or more of the ink retaining grooves 13 has a communication hole 16 communicating with the periphery of the internal relay cores 7 and 8.
With the configuration having the above-mentioned structure, it is possible to prevent the leakage of ink from the pen tip 1 under pressurized and depressurized conditions, which is the above-described conventional disadvantage. If the size Tr of the conduction hole 16 is too small, the balance of the capillary force is reduced. Reservoir 1 for storing ink from inside
Since the problem of sucking out to the third side occurs, the collector groove 6 having a width larger than the minimum width t of the retaining groove 13 (Tr>
t) is desirable.

The member used here can be a conventionally known member. For example, the ink 2 is a low (or medium) viscosity ink having a viscosity of 2 to 100 mPaS at normal temperature (around 23 ° C.). In the state, the viscosity is slightly high, and the direct current that causes the ink 2 to seep out from the tip 9 is prevented, and when shearing or moving by writing occurs, the viscosity is reduced and the pseudo-plastic ink (also called gel ink), which enables smooth writing, is slightly lowered. The ink used as the base may be ink having a viscosity applied. The solvent used as the base of the ink 2 is not only general water but also a collector such as lower alcohols, higher alcohols, organic solvents such as xylene, glycols such as ethylene glycol, and esters thereof. Various known inks that can be used as a writing instrument can be appropriately used.

Similarly, for the other members, the cores 7 and 8 (the nibs for a felt-tip pen or a marker) are formed by extruding a fiber bundle core formed by solidifying a fiber bundle with heat or an adhesive, or extruding a snow crystal cross section. So-called plastic cores, sintered cores in which small particles are fixed while maintaining the space with heat or an adhesive, and sponges, etc., are those conventionally used as long as they have the ability to hold and communicate ink to some extent or more. Can be selected.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to 8 show a collector-type water-based ball-point pen according to an embodiment of the present invention, and FIG. 9 shows a collector-type ball-point pen as a conventional example. As shown in FIG. 9, in a general collector ballpoint pen, a writing ball 9
The ink 2 is guided from the ink tank 3 to the ball 9 by the collector core 7 and the center core 8 inside the pen tip 1 which is loosely fitted so as to be rotatable and cannot be pulled out.
A cap seal mechanism for moving the tail plug 21, the clip 20, the cap 17, and the inner cap 18 by the spring 19 to prevent pumping, and providing an air flow path between the collector 6 and the pen tip 1, and a tipler for color display. For 5, joint 4, etc., the same configuration as a conventional product can be appropriately selected.

The viscosity at room temperature is 2 to 100 mPa
A transparent or translucent synthetic resin ink tank 3 that directly stores ink 2 containing 40% or more based on water having a relatively low viscosity of S has a collector 6 press-fitted and fixed in a state where ink does not leak. Regarding the ink 2, there are a dye ink dissolved in the main solvent, and a pigment such as carbon black or a pseudo organic pigment such as a dyeing resin powder as a coloring agent having superior water resistance and light resistance. The ink 2 similar to the collector-type writing implement can be used, and is not particularly limited in the present invention. The ink according to the present invention can be used as long as the ink having the main solvent of an organic solvent such as alcohol or xylene satisfies the function as the collector-type writing implement. Can be applied.

In particular, when the amount of ink 2 in the ink tank 3 is slightly larger than the maximum amount that the collector 6 can hold due to ink consumption during writing, the change in the internal pressure of the ink tank 3 is large and the pressure of the atmosphere is increased or decreased. When there is a change in the internal pressure from the external pressure due to the internal pressure or a change in the internal pressure due to a temperature change, the tip 9 of the pen tip 1 where the flow path of the ink 2 for writing is secured.
In order to prevent the ink 2 from leaking from the nozzles and air from entering the tip 9 to cause fuzzing, the ink groove 14 and the air groove 15 are thin enough to form a gas-liquid exchange groove between the inside and the outside of the shaft.
And a collector 6 having a retaining groove 13 which is a gap between the plurality of blades 12. The collector 6 has a function to balance the internal pressure by adjusting the internal volume of the pen body by causing the ink 2 to flow into and out of the wing-shaped holding groove 14 of the collector 6 when a pressure difference between the outside air and the inside occurs.

In the collector 6, the total volume of the space that can be filled with the ink 2 in the space of the holding groove 14 is set to 12 times the volume of the ink tank 7.
% Or more (preferably 15% to 30%). The size and groove width of the collector 6 can be appropriately selected from the ink 2 and the volume of the ink tank 3 to be used. As the size of the collector 6 increases, the safety increases, but the size of the entire pen increases. Since there is a problem in that the amount of the ink 2 to be loaded is small compared to the size of the entire pen, the design is generally made to a certain optimum size.

The first advantageous configuration of the present invention is to provide an air groove 15 which is generally provided so as to penetrate linearly in the axial direction.
As shown in cross-sectional views of FIGS. 5, 6, 7, and 8,
An air groove 1 is provided at a position opposed to the retaining groove 14 like 15a and 15b by providing a series of axially extending air grooves 15 by notching or forming a cross section of a certain number of blades 12.
5, 15a, 15b shown in FIG. 1, FIG. 2, FIG. 3, FIG.
A plurality of times (preferably at least 15 times 15a, 15b and 15c) so as not to penetrate in a straight line like 15c and 15d. The air grooves are provided alternately on the side
The collector 6 is bent at a, 22b and 22c. It is desirable that the bent position be provided over the entire retaining groove 13 of the collector 6, but it has been found that the same effect can be recognized even if the bent portion is bent rearward or forward in the axial direction.

In a conventional collector writing instrument, as described above, the internal pressure is adjusted in response to a relatively gentle internal pressure change such as a temperature change of up to about 12% using only the collector. However, the conventional collector-type writing instrument does not sufficiently consider the use of the aircraft in a depressurized state of the aircraft, and does not cope with the sudden movement of the ink 6 in the collector 6. An accident occurs in which the ink 2 blows out from the air hole 10 of the pen body beyond the air groove 15 and the ventilation groove 11 in the inside.

The phenomenon in consideration of use in an aircraft will be described in detail below. When the cap 17 is mounted on the aircraft with the cap 17 inserted at approximately 1 atm and the cap 17 is opened at 0.8 atm, the inner cap is opened. From the state where the internal pressure is maintained at 1 atm by the sealing property of 18, the ink 2 rapidly enters the internal pressure adjusting groove of the collector 6 in an attempt to balance the high internal pressure in the ink tank 3 with the low external pressure. Thereafter, when the writing is completed and the cap 17 is closed, the writing implement is maintained by the sealing property of the inner cap 18 with the internal pressure balanced at 0.8 atm.

Returning to the ground, the cap 17 is kept at 1 atm.
When the ink is released, the ink 2 held in the collector 6 suddenly tries to return to the ink tank 3 side. However, the ink 2 returns to the tank 3 due to a sudden pressure change, and some air is first stored in the tank 3. And the ink 2 is held in the collector 6. In other words, since the collector 6 is already filled with the ink 2, there is no room for adjusting the internal pressure when the temperature slightly changes afterwards or when the vehicle is repeatedly boarded and used again, thus leading to a blowout accident. . If the cap 17 is made of a material having no sealing property, a sudden change in pressure is eliminated, so that this problem is reduced.
As the ink 2 evaporates more frequently, the ink hardens or thickens over time, and the ink 2 tends to be blurred.

Even at present, the collector-type writing instrument is slightly thicker. If the collector-type writing instrument is made thicker, a problem occurs in the thickness and appearance of the grip portion. In addition, when the collector 6 is made longer than the conventional product, the internal length of the collector 6 is reduced. Since the ink head is hung on the pen tip 2, a problem of direct current that the ink 2 leaks from the tip 9 of the pen tip occurs. Ink tank 3
If the volume of the collector 6 is reduced, the retention rate increases even if the size of the collector 6 is the same, and the safety increases, but the problem of the writing life occurs. Particularly, in the direct liquid type writing instrument, since the flow rate is large and stable from the initial stage to the vicinity of the end, the same life cannot be achieved unless the ink loading amount is larger than that of the batting type in which the ink consumption is temporarily reduced.

In the present invention, air grooves 15 are provided alternately on the surface on the side of the ink groove 14 in the vicinity of the ink groove and on the side facing the ink groove 14, and the sectional area is smaller than the sectional area of the wing. Since the jet flow is bent by the connecting groove having the air groove, the jet flow is weakened while passing through the bent air grooves 15a, 15b, 15c, and 15d and the air groove connecting grooves 22a, 22b, and 22c, and the surrounding area is reduced. The ink 2 is stored in the retaining groove 13, and as a result, when the ink 2 reaches the front end side in the axial direction, the pressure rise is weakened and the ink 2 does not blow out from the ventilation hole 11.

Further, according to the present invention, the block having an air groove at a position very close to the ink groove on the surface on the side of the ink groove 14 has a structure in which the ink flows in one direction, and the rapid ink jet flow However, there is a risk that the air groove side is wet with the ink due to the scattering of the ink due to the impact when the pen body is dropped, and the air in the holding groove cannot be replaced, but the adjacent block has a surface facing the ink groove 14. By disposing a block provided with an air groove 15 on the side, even if the air groove is wet with ink due to a sudden jet of ink or the scattering of ink due to an impact when the pen body is dropped, the ink groove is formed. Ink can be ejected from both sides of 14 so that no ink is ejected.

When used in an aircraft, the same pressure is applied to the inside of the pen tip 1 as well as the flow of the ink 2 on the collector 6 side. There is also a DC problem in which the ink 2 leaks from the tip 9 of the nozzle 1. However, in order to solve this problem, in the present invention, in addition to the above-described countermeasures against blowing, at least one or more of the retaining grooves 13 of the collector 6 are required. (Preferably at the position of the air hole 10 in the axial direction and at a position slightly before the center behind two or more sheets), communication such as to communicate with the part of the core 8 or the collector core 7 flowing to the pen tip 1 side Hole 1
6 was open. It is desirable that the dimension Tr of the communication hole 16 be equal to or larger than the cross-sectional area of the dimension φt larger than the narrowest groove width t of the retaining groove 13.

In the collector 6 provided with the communication hole 16, when the cap 17 is opened under the reduced pressure of the aircraft, the pressure at which the ink 2 leaks from the tip 9 of the pen tip 1 is generated on the way to the holding groove 13 side of the collector 6. 16, that is, the ink 2 slightly comes out to the holding groove 13 side.
Since it is possible to hold a small amount of the ink 2 that has come out, it is possible to prevent DC that the ink 2 comes out from the tip 9 of the pen tip 1 as a result. No problem was obtained with the exact same thing.

[0034]

According to the constitution of the present invention, not only the function of preventing the ink from blowing out in response to the relatively slow internal pressure change due to the temperature change of the conventional collector writing instrument, but also having exactly the same function, Even if ink is jetted vigorously from the ink tank side into the air groove of the collector due to a sudden pressure change taking into account the use in an aircraft, the air jet having several curved contacts of the present invention weakens the jet flow of the ink In addition, when at least one of the retaining grooves is provided with an internal pen tip and a conduction hole, the pressure applied to the inside of the pen tip is released to prevent direct current, which is ink leakage from the tip of the pen tip. It has the effect of comprehensively preventing blowout of collector writing instruments and DC accidents.

[0035]

The construction and operation of the writing implement of the present invention are as described above, and a writing implement that is slender, has a good appearance, and is excellent in cost performance can be obtained. Pumping phenomena due to pressure fluctuations due to aircraft, temperature changes, and caps are less likely to occur, and safe and stable writing can be ensured. In particular, it is possible to provide a writing instrument free from accidental blowing even in an environment that is repeatedly subjected to the depressurized environment of an aircraft, such as that used by a businessman who writes on a transiting aircraft.

Compared with the conventional collector writing instrument, there is an effect of having the above-mentioned effective action without changing the special mold structure and the assembling method. This has the effect of providing a collector writing instrument that is inexpensive, has a good appearance, and has excellent long-term storage properties.

[Brief description of the drawings]

FIG. 1 is a front perspective view showing a collector according to an embodiment of the present invention.

FIG. 2 is a rear perspective view showing a collector according to an embodiment of the present invention.

FIG. 3 is a front external view showing a collector according to an embodiment of the present invention.

FIG. 4 is a rear external view showing a collector according to an embodiment of the present invention.

FIG. 5 is an EE cross-sectional view of the collector according to the embodiment of the present invention.

FIG. 6 is a sectional view taken along the line FF of the collector according to the embodiment of the present invention.

FIG. 7 is a sectional view taken along a line GG of the collector according to the embodiment of the present invention.

FIG. 8 is an HH sectional view of a collector according to an embodiment of the present invention.

FIG. 9 is a longitudinal sectional view showing a writing instrument as a conventional example.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 pen tip 2 ink 3 ink tank (shaft) 4 joint 5 mouth plastic 6 collector 7 collector core 8 core 9 writing part (ball in case of ballpoint pen) 10 air hole 11 collector ventilation hole 12 wing 13 retaining groove 14 ink groove 15 air groove 15a, 15c air groove 15b, 15d provided on the surface facing the ink groove 15b, 15d air groove provided on the ink groove side surface 16 communication hole 17 cap 18 inner cap 19 spring 20 clip 21 tail plug 22a, 22b, 22c Air groove connection groove

Claims (3)

[Claims] 1. A pen tip having a writing portion at the tip, an ink tank for directly storing a relatively low-viscosity ink having a viscosity at room temperature of 2 to 100 mPaS, and guiding the ink from the ink tank to the writing portion. In a collector which is a regulator having a plurality of wing-shaped retaining grooves utilizing a capillary phenomenon to adjust the internal pressure of a so-called collector type writing instrument having a guiding means such as a core, the collector has a plurality of It has a radial retaining groove, a thin and long ink groove in the axial direction, and an air groove serving as an air flow path in the collector portion. The air groove is formed by combining a notch (or groove) of a collector wing with the retaining groove. It is configured to secure the air flow path in the axial direction and the radial direction in order to mitigate blowout due to sudden ink movement from the ink tank to the collector holding groove when sudden temperature changes or atmospheric pressure changes. To The notches (or grooves) of the air grooves are provided alternately at a position very close to the ink grooves on the surface on the ink groove side and around the opposite surface side of the ink grooves for each block, and the air grooves are linearly formed in the axial direction. A collector for a writing implement, wherein the collector is configured to be in contact with a connecting groove having a cross-sectional area smaller than a cross-sectional area of a wing at least two or more times so as not to penetrate. 2. An air flow path in which an axial air groove of each block and an axial air groove of another block are bent and connected by a connecting groove having a diameter smaller than the outer diameter of the surrounding wing. The writing instrument collector according to claim 1, wherein: 3. At least one of the ink retaining grooves,
The writing instrument collector according to claim 1 or 2, further comprising a communication hole communicating with the inside of the periphery of the center core.