阅读说明：本技术 一种半自动吸墨器 (Semi-automatic ink absorber ) 是由 李德祥 刘乂菱 李昱瑾 于 2021-11-10 设计创作，主要内容包括：本发明提供一种半自动吸墨器,该吸墨器由筒体、单向阀阀体上的单向阀阀腔与筒体内的单向阀小球、及安装在单向阀阀体上或筒体下端内壁上的排气管、安装在筒体上端由活塞固定装置固定的活塞装置组成。本吸墨器不仅可单独吸墨,还可与书写工具连接后一起吸墨。该吸墨器在标识环位置与钢笔笔头管端面对齐连接后还具有CN113085408A一种简易的可连续吸墨的钢笔书写字迹始终均匀等优点。本吸墨器可用于纤维笔、毛笔、水彩笔和钢笔等书写工具。(The invention provides a semi-automatic ink absorber, which consists of a cylinder, a one-way valve cavity on a one-way valve body, a one-way valve ball in the cylinder, an exhaust pipe arranged on the one-way valve body or on the inner wall of the lower end of the cylinder, and a piston device arranged at the upper end of the cylinder and fixed by a piston fixing device. The ink absorber can absorb ink independently and can absorb ink together with a writing tool after being connected. The ink absorber has the advantages that CN113085408A is a simple pen capable of continuously absorbing ink, writing of the pen is always uniform, and the like after the position of the identification ring is aligned and connected with the end face of the pen point. The ink absorber can be used for writing tools such as fiber pens, writing brushes, water color pens, pens and the like.)

1. A semi-automatic ink absorber is characterized in that the ink absorber consists of a cylinder body (1), a one-way valve body (2) positioned at the lower end of the cylinder body (1), an exhaust pipe (7) arranged on the one-way valve body (2) or on the inner wall of the lower end of the cylinder body (1), a one-way valve ball (4) in the cylinder body (1) and a piston device arranged at the upper end of the cylinder body (1) and fixed by a piston fixing device; the ink absorber is characterized in that a one-way valve cavity (3) and a one-way valve body water diversion tail mounting hole (5) are formed in a one-way valve body (2) at the lower end of the ink absorber, and the one-way valve cavity (3) and a one-way valve ball (4) form a one-way valve.

2. A semi-automatic ink absorber as claimed in claim 1, wherein said one-way valve body (2) is made of an elastic material, and said vent tube (7) is pierced in said one-way valve body (2).

3. A semi-automatic ink absorber as claimed in claim 1 or 2, wherein one end of said vent tube (7) is mounted in a vent tube mounting slot (64) in the lower end of the barrel (1).

4. A semi-automatic ink absorber as claimed in claim 1 or 2, wherein one end of said air discharging tube (7) is fitted into an air discharging tube fitting hole (59) of the valve body (2) of the one-way valve.

5. Semi-automatic ink absorber according to any one of claims 1 or 2 wherein said piston means comprises a piston rod (12) and a piston body mounted in an upper piston chamber (23) of the cylinder (1), the piston body being mounted at the lower end of the piston rod (12); the piston rod (12) is provided with a piston pressing device.

6. Semi-automatic ink absorber according to claim 5 wherein said piston pressing means comprises a spring (18) and a pressing cap (19); the piston rod (12) is sleeved with the spring (18) and the pressing cover (19), the pressing cover (19) is fixed to the top of the piston rod (12), and the spring (18) is arranged between the piston fixing device and the pressing cover (19).

7. Semi-automatic ink absorber according to claim 6, wherein said piston fixing means is a retainer ring (8) or a retainer ring (61) or a retainer ring pad (50) provided at the upper end of the cylinder (1).

8. Semi-automatic ink absorber according to claim 7 wherein the inner diameter of the lower section of the barrel (1) is smaller than the inner diameter of the upper section, such that there is an indicator ring (27) between the lower and upper sections.

Technical Field

The invention belongs to the technical field of daily school supplies, and particularly provides a semi-automatic ink absorber.

Background

The invention discloses a pen capable of continuously absorbing ink, and a patent case CN112389113A provides a brand-new semi-automatic ink absorption mode for a pen, but because the CN112389113A pen capable of continuously absorbing ink directly contains ink in a pen holder, the pen holder is only suitable for being made of transparent materials, but the pen made of the transparent materials is not attractive after ink absorption. These factors have led to a relatively narrow range of applications for CN112389113A, a pen that continuously absorbs ink.

Secondly, although the CN112389113A pen capable of continuously absorbing ink can better control the ink amount in the tongue, and the ink leakage phenomenon is much less than that of the existing pen, the CN113085408A pen which is a simple pen capable of continuously absorbing ink does not have the function of limiting the ink output amount, so that the defect of uneven ink discharge cannot be completely avoided.

Thirdly, besides CN112389113A a pen capable of continuously absorbing ink and CN113085408A a simple pen capable of continuously absorbing ink, which belong to semi-automatic ink absorption, the Nippon Baile CON-70 press type ink absorber also belongs to a semi-automatic ink absorber, but the Nippon Baile CON-70 press type ink absorber is very expensive and can reach up to 70 yuan, which is not affordable by ordinary consumers.

How to solve the problems is to promote the CN112389113A pen capable of continuously absorbing ink to be commercialized, manufacture products with lower cost and widen the application range, and is the problem to be solved by the invention.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provide a semi-automatic ink absorber.

The technical scheme adopted by the invention is as follows: a semi-automatic ink absorber is composed of a cylinder, a one-way valve body positioned at the lower end of the cylinder, an exhaust pipe arranged on the one-way valve body or on the inner wall of the lower end of the cylinder, a one-way valve ball in the cylinder, and a piston device arranged at the upper end of the cylinder and fixed by a piston fixing device; and a one-way valve cavity and a water-leading tail mounting hole of the one-way valve body are arranged on the one-way valve body at the lower end of the ink absorber, and the one-way valve cavity and the one-way valve ball form a one-way valve.

Preferably, the check valve body is made of an elastic material, and the exhaust pipe penetrates through the check valve body.

Preferably, one end of the exhaust pipe is arranged in the exhaust pipe installation seam at the lower end of the cylinder body.

Preferably, one end of the exhaust pipe is installed in an exhaust pipe installation hole on the one-way valve body.

Preferably, the piston device comprises a piston rod and a piston body arranged in a piston cavity at the upper part of the cylinder body, and the piston body is arranged at the lower end of the piston rod; the piston rod is provided with a piston pressing device.

Preferably, the piston pressing device comprises a spring and a pressing cover; the spring and the pressing cover are sleeved on the piston rod, the pressing cover is fixed to the top of the piston rod, and the spring is arranged between the piston fixing device and the pressing cover.

Preferably, the piston fixing device is a ring blocking pipe or a ring blocking body or a ring blocking pad arranged at the upper end of the cylinder body.

Preferably, the inner diameter of the lower section in the cylinder body is smaller than that of the upper section, and an identification ring is arranged between the lower section and the upper section.

The invention has the beneficial effects that:

1, the invention creatively sets up the label ring and outer spacing ring on the cylinder, can make the ink absorber of the invention after any position and writing tool nib end face align to connect between outer spacing ring and the label ring, can make the writing tool have can suck the ink and can write the function, can adjust the connection position according to the ink supply amount that the writing requirement of the writing tool needs, for example, when the ink absorber of the invention connects in alignment with nib end face of pen in the label ring, the pen has CN113085408A a simple pen that can suck ink continuously writes the writing of the ink advantage such as being uniform all the time, can overcome CN112389113A a pen that can suck ink continuously has the disadvantage that the ink supply amount is large, spit the ink is uneven.

2, the ink absorber of the invention can not merely absorb the ink independently, can also absorb the ink with the writing tool connection back together, therefore has widened CN112389113A application range of a pen that can absorb the ink continuously greatly, make the ink absorber not merely can be applied to the pen, can also be applied to the brush pen, water color pen, fiber pen, and CN112389113A can absorb the ink continuously the application range of the pen is very narrow, it is very visible, the practicability of the invention is much higher.

3, the ink absorber of the invention has low manufacturing cost, and the large-scale production cost of the ink absorber does not exceed 2 yuan. The Nippon Baile CON-70 as a semi-automatic ink absorber has a retail price as high as 70 yuan, but under the condition of the same length and outer diameter, the ink capacity of the ink absorber is less than 70% of the ink capacity of the ink absorber, the ink absorber cannot absorb ink independently, the ink absorber can absorb ink after being connected with a pen, and a pen point is easy to damage when absorbing ink. Therefore, the invention has stronger practicability.

4, the ink absorber of the invention is installed in writing tools, overcome CN112389113A a can suck the black pen of ink continuously must adopt the disadvantage made of transparent material, has expanded the application range, make the writing tools not merely can be made of transparent material, can also be made of opaque material, this offers possibility for the nib, pen-holder to beautify and decorate, thus has strengthened the commodity performance of the writing tools, have improved the practical value of the invention too from this.

5, the ink absorber of the invention can also be applied to the existing pen with a lantern ring after being improved, thus the practicability of the invention is stronger.

Drawings

FIG. 1 is a schematic longitudinal sectional view of a semi-automatic ink absorber employing a retainer tube to fix a piston pressing device according to an embodiment of the present invention;

FIG. 2 is a left side view and a top view of a semi-automatic ink absorber employing a retainer tube to secure a piston pressing device according to an embodiment of the present invention;

FIG. 3 is a left side view, a top view and a right side view of a check valve body without an exhaust pipe mounted thereon, rotated 90 degrees backward according to an embodiment of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of an embodiment of the present invention with an ink absorber mounted at the forwardmost end in the nib of a fountain pen;

FIG. 5 is a schematic longitudinal cross-sectional view of an embodiment of the present invention with the ink absorber installed in the pen at the optimum writing position;

FIG. 6 is a schematic longitudinal cross-sectional view of an embodiment of the present invention showing an ink absorber mounted at the forwardmost end in the nib of a dark-tipped pen;

FIG. 7 is a schematic longitudinal cross-sectional view of an embodiment of the present invention with the ink absorber installed in the best writing position in a dark-tipped pen;

FIG. 8 is a schematic longitudinal sectional view of an ink absorber installed in a writing brush according to an embodiment of the present invention;

FIG. 9 is a schematic longitudinal cross-sectional view of an embodiment of the present invention with an ink absorber installed in a fibrous pen;

FIG. 10 is a schematic longitudinal cross-sectional view of an embodiment of the present invention with an ink absorber installed in a prior art dark-tipped pen.

In the figure: 1-cylinder, 2-one-way valve body, 3-one-way valve cavity, 4-one-way valve ball, 5-one-way valve body water-drawing tail installation hole, 6-installation groove, 7-exhaust pipe, 8-retaining ring, 9-retaining ring outside retaining ring, 10-retaining ring inside retaining ring, 11-retaining ring pipe piston rod installation hole, 12-piston rod, 13-piston rod outside protruding ring, 14-retaining ring, 15-piercing head, 16-piston rod constriction, 17-piston head, 18-spring, 19-pressing cover, 20-piercing head installation hole, 21-piston rod constriction installation hole, 22-ink cavity, 23-piston cavity, 24-spring housing cavity, 25-outer protruding ring, 26-cylinder bottom end, 27-identification ring, 28-outer limit ring, 29-pen head pipe, 30-pen head external thread, 31-pen tongue, 32-water-drawing tail, 33-pen holder, 34-pen-internal thread, 35-internal thread, 36-cap, 37-tongue collar, 38-tongue collar leading tail mounting hole, 39-nib tube end face, 40-air cavity region, 41-inner nib, 42-inner nib external thread, 43-inner nib external collar, 44-outer nib, 45-writing brush leading refill mounting hole, 46-writing brush leading refill, 47-writing brush front nib, 48-writing brush refill, 49-writing brush nib, 50-collar pad, 51-collar pad piston rod mounting hole, 52-fiber pen leading refill mounting hole, 53-fiber pen leading refill, 54-fiber pen front nib, 55-fiber pen nib, 56-seal ring, 57-collar, 58-collar groove, 59-vent pipe mounting hole, 60-collar mounting hole, 61-collar body, 62-collar body piston rod mounting hole, 63-collar body outer collar, 64-vent pipe mounting seam.

The invention is further illustrated below with reference to specific embodiments and the accompanying drawings.

Example 1

As shown in fig. 1, 2 and 3, the semi-automatic ink absorber adopting a retaining ring pipe to fix a piston pressing device comprises a cylinder body 1, a one-way valve body 2 in the lower end of the cylinder body 1, a one-way valve cavity 3, a one-way valve body water guide tail mounting hole 5 and a mounting groove 6 which are arranged on the one-way valve body 2, a one-way valve ball 4 in the cylinder body 1, an exhaust pipe 7 arranged on the one-way valve body 2, and a piston device which is arranged at the upper end of the cylinder body 1 and is fixed by the retaining ring pipe 8; the check valve cavity 3 and the check valve ball 4 form a check valve; the outer wall of the one-way valve body 2 is provided with an installation groove 6, and the exhaust pipe 7 penetrates through the one-way valve body 2 made of elastic material after passing through the installation groove 6, so that one end of the exhaust pipe 7 is fixed on the one-way valve body 2; the other end of the exhaust tube 7 extends to the top end of the ink chamber 22 in the cylinder 1, and the piston head 14 does not touch the exhaust tube 7 when the pressing cap 19 is pressed to the bottom.

The piston device comprises a piston rod 12 and a piston body arranged in a piston cavity 23 at the upper part of the cylinder body 1, the piston body is formed by connecting a piston rod outer convex ring 13 at the lower end of the piston rod 12 with a piston head 17, and the lower part of a baffle ring 14 is close to the piston rod outer convex ring 13 and is connected with the piston rod outer convex ring 13 into a whole for protecting the piston head 17. The piston head 17 is connected with the piston pressing device through the piston rod 12, and the piston head 17 and the pressing spring device are fixed through the ring blocking pipe 8; the piston pressing device comprises a ring blocking pipe 8, a spring 18 and a pressing cover 19 which are fixedly arranged on the upper part of the cylinder body 1; the baffle ring pipe 8, the spring 18 and the pressing cover 19 are sleeved on the piston rod 12; the ring blocking pipe 8 is sleeved on the piston rod 12 through a ring blocking pipe piston rod mounting hole 11, the pressing cover 19 is fixed at the top of the piston rod 12, the thorn head part 15 at the upper end of the piston rod 12 is inserted into the thorn head part mounting hole 20 in the pressing cover 19, and the piston rod contraction part mounting hole 21 on the pressing cover 19 is arranged outside the piston rod contraction part 16, so that the pressing cover 19 cannot fall off once being mounted at the top end of the piston rod 12. The spring 18 is arranged between the baffle ring 10 and the pressing cover 19 in the baffle ring pipe; the retaining ring 8 is fixedly connected with the cylinder body 1 through the convex ring 25, so that the piston rod 12 and the piston head 17 can slide up and down, and when the pressing cover 19 is pressed to the bottom to be close to the retaining ring outside the retaining ring 9, the whole spring 18 can be retracted in the spring receiving cavity 24.

The upper part in the cylinder 1 is a piston chamber 23 for the piston head 17 to move up and down, and the lower part of the piston chamber 23 is an ink chamber 22.

The lower end 26 of the barrel allows a clearance to be maintained between the valve body 2 of the one-way valve and the latch ring of the writing instrument after the lower end of the ink absorber is connected to the corresponding writing instrument, thereby providing a vent path for the ink absorber to draw air.

The ring blocking pipe 8 can adopt other connection modes such as threaded connection and the like besides the socket connection with the barrel body 1, but the socket connection mode is simplest, and the manufacturing and installation costs are lower.

The baffle ring 14 is connected with the piston rod convex ring 13 to be manufactured into a whole, so that the manufacturing cost can be reduced; meanwhile, under the condition that the thicknesses of the baffle ring 14 and the piston rod outer convex ring 13 are not changed, the strengths of the baffle ring 14 and the piston rod outer convex ring 13 can be enhanced.

When sucking ink, one hand holds the cylinder 1, the pressing cover 19 is pressed down by the thumb to discharge a part of air in the cylinder 1, then the lower end of the ink absorber is immersed in the ink, the thumb is released, the spring 18 drives the piston head 17 to move upwards, then the ink is sucked into the ink cavity 22 through the one-way valve body water-guiding tail mounting hole 5 and the one-way valve cavity 4, the pressing cover 19 is pressed again, and the air in the piston cavity 23 is discharged through the exhaust pipe 7. The ink in the ink chamber 22 cannot be discharged due to the function of the one-way valve formed by the one-way valve chamber 3 and the one-way valve ball 4, and the pressing cover 19 can be repeatedly pressed and loosened to repeatedly exhaust and absorb ink until the ink fills the whole ink chamber 22 and part of the piston chamber 23.

The barrel 1 is preferably made of plastic, which is somewhat deformable and designed to be slightly larger, so that when the lower end of the ink absorber is inserted into the barrel or the inner nib of the corresponding writing instrument, the lower end of the ink absorber forms a tight fit with the barrel or the inner nib of the corresponding writing instrument without air leakage.

The check valve body 2 is made of elastic materials, and the check valve body 2 is thick, so that the installation groove 6 is formed in the outer wall of the check valve body 2, and then the exhaust pipe 7 is installed in a piercing mode; while preventing deformation of the check valve chamber 3 caused by the installation of the exhaust pipe 7. The mounting slot 6 is designed to be larger than the exhaust tube 6 to facilitate the piercing operation for mounting the exhaust tube 7. After the exhaust pipe 7 is mounted, the check valve body 2 is loaded from the rear end of the cylinder 1 with a suitable tool, and the check valve body 2 is mounted to the front end inside the cylinder 1.

The one-way valve body 2 is made of elastic materials, and meanwhile, the one-way valve cavity 3 in the one-way valve body 2 is favorably and closely matched with the one-way valve ball 4 to form a reliable one-way valve; the check valve ball 4 is preferably made of metal.

The one-way valve body 2 is larger than the lower end of the ink absorber cylinder 1 so that it fits tightly and air-tightly into the cylinder 1 once it is installed in the front end of the cylinder 1.

The exhaust pipe 7 is preferably made of a capillary metal pipe, so that the valve body 2 of the one-way valve can be pierced, the installation cost is reduced, and the occupied space is small.

The inner diameter of the lower section in the cylinder body 1 is smaller than that of the upper section, an annular step surface is arranged between the upper section and the lower section, an inner ring, namely the marking ring 27, is seen from the outside of the cylinder body 1 made of transparent materials, and the marking ring 27 in the cylinder body can be used as a reference mark when the cylinder body is connected with a writing tool. The provision of the marker ring 27 also adds strength to the lower end of the absorber.

The outer diameter of the lower section at the lower end of the cylinder 1 is smaller than that of the upper section, so that an outer limiting ring 28 is arranged between the upper section and the lower section, and the outer limiting ring 28 arranged on the cylinder 1 can increase the ink capacity of the ink absorber and can be used as a limiting mark when being connected with a writing tool.

The marker ring 27 and the outer retainer ring 28 of the ink absorber are position markers for attachment to the writing instrument. When the ink absorber is aligned with the end face of the pen head pipe of the writing tool through the outer limiting ring 28 on the cylinder body 1, the ink absorber can absorb ink and write, but a pen applying the ink absorber does not have CN113085408A, a simple pen capable of continuously absorbing ink has the advantage of even ink discharging; when the ink absorber is aligned with the end face of the pen head of the pen by the identification ring 27 in the cylinder 1, the pen can absorb ink, has the advantage that CN113085408A is a simple pen capable of continuously absorbing ink and writing is always uniform, and can overcome the defects of large ink supply amount and nonuniform ink discharge of a CN112389113A pen capable of continuously absorbing ink.

From the above, it can be seen that the ink absorber of the present invention is aligned and connected with the tip end surface of the writing tip of the writing instrument at any position between the identification ring 27 and the outer retainer ring 28, and the writing instrument has both ink absorbing and writing functions, but the amount of ink delivered at different connection positions is different, thereby affecting the writing quality, so that the connection positions can be adjusted according to the amount of ink supply required for writing requirements of different writing instruments.

Methods of marking the attachment location of the blotter to the writing instrument to which the blotter is applied include, but are not limited to, an identification ring 27 and an outer stop ring 28, other markings including markings, scribes, graduations, etc. disposed on the inside or outside of the barrel 1.

Example 2

As shown in fig. 4 and 5, the semi-automatic ink-absorbing pen manufactured by installing the ink absorber in the pen with the pen point comprises a pen point of the pen with the pen point, a pen holder 34, the ink absorber installed in the pen holder 34 and a pen cap 36 sleeved on the pen point.

The ink absorber consists of a cylinder body 1, a one-way valve body 2 arranged in the lower end of the cylinder body 1, a one-way valve cavity 3 arranged on the one-way valve body 2, a water-guiding tail mounting hole 5 and a mounting groove 6 of the one-way valve body, a one-way valve ball 4 arranged in the cylinder body 1, an exhaust pipe 7 arranged on the one-way valve body 2, and a piston device arranged at the upper end of the cylinder body 1 and fixed by a baffle ring pipe 8; the check valve cavity 3 and the check valve ball 4 form a check valve; the outer wall of the one-way valve body 2 is provided with a mounting groove 6, the exhaust pipe 7 pierces through the one-way valve body 2 after passing through the mounting groove 6 on the one-way valve body 2, one end of the exhaust pipe 7 is fixed on the one-way valve body 2, the other end of the exhaust pipe 7 extends to the top end of the ink cavity 22 in the cylinder body 1, and the piston head 14 does not touch the exhaust pipe 7 when the pressing cover 19 is pressed to the bottom.

The piston device comprises a piston rod 12 and a piston body arranged in a piston cavity 23 at the upper part of the cylinder body 1, the piston body is formed by connecting a piston rod outer convex ring 13 at the lower end of the piston rod 12 with a piston head 17, the lower part of a baffle ring 14 is next to the piston rod outer convex ring 13 and is used for protecting the piston head 17, the piston head 17 is connected with a pressing spring device through the piston rod 12, and the piston head 17 and the piston pressing device are fixed through a baffle ring 8; the piston pressing device comprises a ring blocking pipe 8, a spring 18 and a pressing cover 19 which are fixedly arranged on the upper part of the cylinder body 1; the baffle ring pipe 8, the spring 18 and the pressing cover 19 are sleeved on the piston rod 12; the ring blocking pipe 8 is sleeved on the piston rod 12 through a ring blocking pipe piston rod mounting hole 11, the pressing cover 19 is fixed at the top of the piston rod 12, the thorn head part 15 at the upper end of the piston rod 12 is inserted into the thorn head part mounting hole 20 in the pressing cover 19, and the piston rod contraction part mounting hole 21 on the pressing cover 19 is arranged outside the piston rod contraction part 16, so that the pressing cover 19 cannot fall off once being mounted at the top end of the piston rod 12. The spring 18 is arranged between the inner baffle ring 10 of the baffle ring pipe 8 and the pressing cover 19; the retaining ring pipe 8 is inserted into the cylinder body 1 through the convex ring 25 and is fixedly connected with the cylinder body, so that the piston rod 12 and the piston head 17 can slide up and down, and when the pressing cover 19 is pressed to the bottom to be close to the retaining ring outside the retaining ring 9, the whole spring 18 can be retracted into the spring receiving cavity 24.

The pen point of the pen with the pen point is composed of a pen point tube 29, a pen tongue 31 and a pen point 33. The pen point tube 29 is provided with a pen tongue baffle ring 37, and a water guide tail mounting hole 38 of the pen tongue baffle ring is arranged in the middle of the pen tongue baffle ring 37; the tongue 31 is provided with a water-guiding tail 32, and the water-guiding tail 32 passes through a tongue baffle ring water-guiding tail mounting hole 38 in the middle of a tongue baffle ring 37 so that the tongue 31 is mounted in the nib tube 29. The nib 31 is mounted in the nib tube 29 together with the nib 33 of a pen; the pen head tube 29 is connected with the pen holder 34 through the pen head external thread 30 and the pen holder internal thread 35, and the pen cap 36 is sleeved outside the pen head tube 29.

When the lower end of the ink absorber is arranged in the pen point pipe 29, the lower end of the cylinder body 1 is tightly matched with the pen point pipe 29 without air leakage through design, and the outer limit ring 28 on the cylinder body 1 is tightly attached to the pen point pipe end surface 39 on the pen point pipe 29, the lower end part 26 of the cylinder body is tightly attached to the pen tongue baffle ring 37, and a certain gap is kept between the one-way valve body 2 and the pen tongue baffle ring 37 to form an exhaust channel; the catchment tail 32 is also mounted mostly into the one-way valve body catchment tail mounting hole 5 at this time.

When absorbing ink, firstly unscrewing the pen holder 34, then holding the barrel 1 with one hand, pressing the pressing cover 19 with a thumb, discharging a part of air in the barrel 1, then immersing part or all of the pen nib 33 and the exposed pen tongue 31 into ink, then loosening the thumb, driving the piston head 17 to move upwards by the spring 18, so that the ink is sucked into the ink cavity 22 through the pen tongue 31, the gap between the water tail 32 and the water tongue baffle ring water tail mounting hole 38, the gap between the water tail 32 and the one-way valve body water tail mounting hole 5, and then pressing the pressing cover 19 again, and discharging the air in the piston cavity 23 through the exhaust pipe 7, the gap between the one-way valve body 2 and the pen tongue baffle ring 37, the gap between the water tail 32 and the water tail mounting hole 38, and the gap between the pen nib 29 inner cavity and the pen tongue 31; the ink in the ink chamber 22 cannot be discharged due to the action of the one-way valve formed by the one-way valve chamber 3 and the one-way valve ball 4, and the pressing cover 19 can be repeatedly pressed and loosened to repeatedly exhaust and absorb ink until the ink fills the whole ink chamber 22 and part of the piston chamber 23. After the ink is sucked, the ink in the piston chamber 23 is discharged, and the excessive ink in the tongue 31 is sucked into the piston chamber 23, thereby controlling the amount of the ink in the tongue 31. After the ink is sucked, the pen holder 34 is screwed on, and then the pen cap 36 is covered.

After ink absorption, the ink absorber is pulled out a little to ensure that the identification ring 27 in the cylinder body 1 is aligned with the end surface 39 of the pen head pipe, and an air cavity area 40 is formed between the pen tongue baffle ring 37 and the one-way valve body 2, so that the pen has the advantage that CN113085408A is simple and easy, the writing of the pen capable of continuously absorbing ink is always uniform, and the defects of large ink supply amount and uneven ink discharge of the CN112389113A pen capable of continuously absorbing ink can be overcome.

The connection between the ink absorber and the tip tube 29 of the present invention is very wide, and ink can be absorbed as long as the lower end of the ink absorber is connected to the tip tube 29 without air leakage. When the ink absorber of the present invention is attached to a pen in alignment with the nib end surface 39 at any location between the marker ring 27 and the outer retainer ring 28, the pen will both absorb ink and write, but the different attachment locations will have a significant impact on the quality of writing, and the pen will only perform optimally when the air cavity area 40 of a simple, continuous ink absorbing pen such as CN113085408A is satisfied, i.e., when the marker ring 27 in the barrel 1 is aligned with the nib end surface 39, see fig. 5.

When the total length of the pen is 145 mm, the outer diameter of the pen holder 34 is 12 mm, the wall thickness of the pen holder 34 is 1 mm, the wall thickness of the cylinder body 1 is 0.5 mm, the distance between the outer wall of the cylinder body 1 and the inner wall of the pen holder 34 is 0.5 mm, the exhaust pipe 7 is made of a capillary metal pipe, and when the stroke of the piston is 5 mm, the maximum storage capacity of ink in the ink cavity 22 and the piston cavity 23 of the ink absorber is about 2000 cubic mm. The maximum ink capacity of the built-in push-pull ink absorber is only 378 cubic millimeters, and only about 200 cubic millimeters of ink can be actually absorbed. The piston stroke of the present invention is shortened and the ink absorber has a much greater ink capacity than the prior built-in ink absorber. Most of the existing built-in ink absorbers have small ink capacity, and the ink quantity in the pen tongue cannot be controlled through operation, so that the ink in the pen tongue is more after absorbing ink, and ink leakage and ink spitting are easy to occur in ink absorption writing.

Example 3

As shown in fig. 6 and 7, the semi-automatic ink absorption pen manufactured by installing the ink absorber in the dark-tipped pen comprises a dark-tipped pen nib, a pen holder 34, the ink absorber installed in the pen holder 34, and a pen cap 36 sleeved on the pen nib.

The ink absorber consists of a cylinder body 1, a one-way valve body 2 arranged in the lower end of the cylinder body 1, a one-way valve cavity 3 arranged on the one-way valve body 2, a water-guiding tail mounting hole 5 and a mounting groove 6 of the one-way valve body, a one-way valve ball 4 arranged in the cylinder body 1, an exhaust pipe 7 arranged on the one-way valve body 2, and a piston device arranged at the upper end of the cylinder body 1 and fixed by a baffle ring pipe 8; the check valve cavity 3 and the check valve ball 4 form a check valve; the outer wall of the one-way valve body 2 is provided with a mounting groove 6, after the exhaust pipe 7 pierces the one-way valve body 2 through the mounting groove 6, one end of the exhaust pipe 7 is fixed on the one-way valve body 2, the other end of the exhaust pipe 7 extends to the top end of the ink cavity 22 in the cylinder body 1, and the piston head 14 does not touch the exhaust pipe 7 when the pressing cover 19 is pressed to the bottom.

The piston device comprises a piston rod 12 and a piston body arranged in a piston cavity 23 at the upper part of the cylinder body 1, the piston body is formed by connecting a piston rod outer convex ring 13 at the lower end of the piston rod 12 with a piston head 17, the lower part of a baffle ring 14 is next to the piston rod outer convex ring 13 and is used for protecting the piston head 17, the piston head 17 is connected with a pressing spring device through the piston rod 12, and the piston head 17 and the piston pressing device are fixed through a baffle ring 8; the piston pressing device comprises a ring blocking pipe 8, a spring 18 and a pressing cover 19 which are fixedly arranged on the upper part of the cylinder body 1; the baffle ring pipe 8, the spring 18 and the pressing cover 19 are sleeved on the piston rod 12; the ring blocking pipe 8 is sleeved on the piston rod 12 through a ring blocking pipe piston rod mounting hole 11, the pressing cover 19 is fixed at the top of the piston rod 12, the thorn head part 15 at the upper end of the piston rod 12 is inserted into the thorn head part mounting hole 20 in the pressing cover 19, and the piston rod contraction part mounting hole 21 on the pressing cover 19 is arranged outside the piston rod contraction part 16, so that the pressing cover 19 cannot fall off once being mounted at the top end of the piston rod 12. The spring 18 is arranged between the inner baffle ring 10 of the baffle ring pipe 8 and the pressing cover 19; the retaining ring pipe 8 is inserted into the cylinder body 1 through the convex ring 25 and is fixedly connected with the cylinder body, so that the piston rod 12 and the piston head 17 can slide up and down, and when the pressing cover 19 is pressed to the bottom to be close to the retaining ring outside the retaining ring 9, the whole spring 18 can be retracted into the spring receiving cavity 24.

The pen point with the dark point consists of an inner pen point 41, a pen tongue 31, a pen point 33 and an outer pen point 44. The inner pen point 41 is provided with a pen tongue baffle ring 37, and a water guide tail mounting hole 38 of the pen tongue baffle ring is arranged in the middle of the pen tongue baffle ring 37; the tongue 31 is provided with a water-guiding tail 32, and the water-guiding tail 32 passes through a tongue baffle ring water-guiding tail mounting hole 38 in the middle of a tongue baffle ring 37 so that the tongue 31 is mounted in the inner pen head 41. The pen point 33 of the pen is sleeved at the front end of the pen tongue 31, and then the outer pen point 44 is sleeved; the inner nib 41 is connected with the inner penholder thread 35 through the inner nib thread 42, so that the inner nib 41 is connected with the penholder 34, and the cap 36 is sleeved outside the outer nib 44. The inner nib 41 has an inner nib outer stop ring 43 for limiting the connection position of the pen holder 34 and the cap 36. The ink absorber is mounted in the inner nib 41 and is also located in the barrel 34.

When the lower end of the ink absorber is arranged in the inner pen point 41, the lower end of the cylinder body 1 is tightly matched with the inner pen point 41 through design so as to be airtight, the outer limit ring 28 on the cylinder body 1 is tightly attached to the end surface 39 of the pen point pipe of the inner pen point 41, and the lower end part 26 of the cylinder body is tightly attached to the tongue baffle ring 37, a certain gap is kept between the one-way valve body 2 and the tongue baffle ring 37 to form an exhaust channel; at the moment, the water-guiding tail 32 on the pen tongue 31 is mostly installed in the water-guiding tail installation hole 5 of the one-way valve body.

After ink absorption, the ink absorber is pulled out a little to ensure that the identification ring 27 in the cylinder body 1 is aligned with the end surface 39 of the pen head pipe, and an air cavity area 40 is formed between the pen tongue baffle ring 37 and the one-way valve body 2, so that the pen has the advantage that CN113085408A is simple and easy, the writing of the pen capable of continuously absorbing ink is always uniform, and the defects of large ink supply amount and uneven ink discharge of the CN112389113A pen capable of continuously absorbing ink can be overcome. The writing performance of the pen is now optimized, see fig. 7.

Otherwise, refer to example 1 and example 2.

Example 4

As shown in FIG. 8, the semiautomatic ink-sucking writing brush manufactured by installing the ink absorber in the writing brush comprises a writing brush head, a pen holder 34, the ink absorber installed in the pen holder 34, and a pen cap 36 sleeved on the writing brush head.

The brush pen head consists of a pen head tube 29, a pen tongue 31, a brush pen front head 47 and a brush pen core 48. The pen point tube 29 is provided with a pen tongue baffle ring 37, and a water guide tail mounting hole 38 of the pen tongue baffle ring is arranged in the middle of the pen tongue baffle ring 37; the tongue 31 is provided with a water-drawing tail 32 and a writing brush water-drawing core mounting hole 45, and the water-drawing tail 32 passes through a tongue baffle ring water-drawing tail mounting hole 38 in the middle of a tongue baffle ring 37 so that the tongue 31 is mounted in the pen head pipe 29. The pen point pipe 29 is provided with a pen point external thread 30 which is used for connecting a pen point internal thread 35 on a pen holder 34, so that the pen point pipe 29 and the pen holder 34 can be connected together. The tip tube 29 has a tip tube end face 39 thereon. The writing brush ink guide core 46 is arranged in the writing brush ink guide core mounting hole 45, the writing brush core 48 is arranged in the writing brush front pen head 47, the front end of the writing brush core 48 is a writing brush tip 49, and the sealing ring 56 is arranged on the outer wall of the writing brush front pen head 47.

The ink absorber consists of a cylinder body 1, a one-way valve body 2 arranged in the lower end of the cylinder body 1, a one-way valve cavity 3 arranged on the one-way valve body 2, a water-guiding tail mounting hole 5 and a mounting groove 6 of the one-way valve body, a one-way valve ball 4 arranged in the cylinder body 1, an exhaust pipe 7 arranged on the one-way valve body 2, and a piston device arranged at the upper end of the cylinder body 1 and fixed by a baffle ring pipe 8; the check valve cavity 3 and the check valve ball 4 form a check valve; the outer wall of the one-way valve body 2 is provided with a mounting groove 6, the exhaust pipe 7 pierces through the one-way valve body 2 after passing through the mounting groove 6 on the one-way valve body 2, one end of the exhaust pipe 7 is fixed on the one-way valve body 2, the other end of the exhaust pipe 7 extends to the top end of the ink cavity 22 in the cylinder body 1, and the piston head 14 does not touch the exhaust pipe 7 when the pressing cover 19 is pressed to the bottom.

The piston device comprises a piston rod 12 and a piston body arranged in a piston cavity 23 at the upper part of the cylinder body 1, the piston body is formed by connecting a piston rod outer convex ring 13 at the lower end of the piston rod 12 with a piston head 17, the lower part of a baffle ring 14 is next to the piston rod outer convex ring 13 and is used for protecting the piston head 17, the piston head 17 is connected with a pressing spring device through the piston rod 12, and the piston head 17 and the piston pressing device are fixed through a baffle ring 8; the piston pressing device comprises a ring blocking pipe 8, a spring 18 and a pressing cover 19 which are fixedly arranged on the upper part of the cylinder body 1; the baffle ring pipe 8, the spring 18 and the pressing cover 19 are sleeved on the piston rod 12; the ring blocking pipe 8 is sleeved on the piston rod 12 through a ring blocking pipe piston rod mounting hole 11, the pressing cover 19 is fixed at the top of the piston rod 12, the thorn head part 15 at the upper end of the piston rod 12 is inserted into the thorn head part mounting hole 20 in the pressing cover 19, and the piston rod contraction part mounting hole 21 on the pressing cover 19 is arranged outside the piston rod contraction part 16, so that the pressing cover 19 cannot fall off once being mounted at the top end of the piston rod 12. The spring 18 is arranged between the inner baffle ring 10 of the baffle ring pipe 8 and the pressing cover 19; the retaining ring pipe 8 is inserted into the cylinder body 1 through the convex ring 25 and is fixedly connected with the cylinder body, so that the piston rod 12 and the piston head 17 can slide up and down, and when the pressing cover 19 is pressed to the bottom to be close to the retaining ring outside the retaining ring 9, the whole spring 18 can be retracted into the spring receiving cavity 24.

When the lower end of the ink absorber is arranged in the pen point pipe 29, the lower end of the cylinder body 1 can be tightly matched with the pen point pipe 29 without air leakage through design, and the outer limit ring 28 on the cylinder body 1 is tightly attached to the pen point pipe end surface 39 on the pen point pipe 29, the lower end part 26 of the cylinder body is tightly attached to the pen tongue baffle ring 37, and a certain gap is kept between the one-way valve body 2 and the pen tongue baffle ring 37 to form an exhaust channel; the catchment tail 32 is also mounted mostly into the one-way valve body catchment tail mounting hole 5.

In this embodiment, the ink absorber of the present invention can absorb ink and write when any position between the identification ring 27 and the outer limit ring 28 is aligned and connected with the end surface 39 of the writing brush tip, but the different connection positions have a great influence on the writing quality, and the ink supply of the writing brush is the largest only when the ink absorber of the present invention is aligned and connected with the end surface 39 of the writing brush tip at the position of the outer limit ring 28. Therefore, the connection position can be adjusted according to the ink supply required by different writing brush requirements, referring to embodiment 2 and embodiment 3.

The water color pen is the same as the embodiment.

Example 5

As shown in FIG. 9, a semi-automatic ink-absorbing fiber pen, which is manufactured by installing an ink absorber in a fiber pen, includes a pen point of the fiber pen, a pen holder 34, an ink absorber installed in the pen holder 34, and a cap 36 fitted over the pen point of the fiber pen.

The pen head of the fiber pen consists of a pen head tube 29, a pen tongue 31, a front pen head 54 of the fiber pen and a water guiding core 53 of the fiber pen. The pen point tube 29 is provided with a pen tongue baffle ring 37, and a water guide tail mounting hole 38 of the pen tongue baffle ring is arranged in the middle of the pen tongue baffle ring 37; the tongue 31 is provided with a water-guiding tail 32 and a fiber pen water-guiding core mounting hole 52, and the water-guiding tail 32 passes through a tongue baffle ring water-guiding tail mounting hole 38 in the middle of the tongue baffle ring 37 so that the tongue 31 is mounted in the pen head pipe 29. The fiber pen wick 53 is mounted in the fiber pen wick mounting hole 52, and the fiber pen wick 53 is also mounted in the fiber pen front nib 54. The sealing ring 56 is arranged outside the front pen head 54 of the fiber pen; the front end of the fiber pen water-leading core 53 is a fiber pen point 55. The pen point pipe 29 is provided with a pen point external thread 30 which is used for connecting a pen point internal thread 35 on a pen holder 34, so that the pen point pipe 29 and the pen holder 34 can be connected together. The tip tube 29 has a tip tube end face 39 thereon.

The ink absorber consists of a cylinder 1, a one-way valve body 2 at the lower end of the cylinder 1, a one-way valve cavity 3 and a water guide tail mounting hole 5 of the one-way valve body on the one-way valve body 2, a one-way valve ball 4 in the cylinder 1, an exhaust pipe 7 arranged on the inner wall of the lower end of the cylinder 1 and a piston device which is arranged at the upper end of the cylinder 1 and is fixed by a baffle ring pad 50; the valve cavity 3 of the one-way valve can form a one-way valve with a small ball 4 of the one-way valve; the lower end of the cylinder 1 is provided with an exhaust pipe mounting slit 64, the exhaust pipe 7 extends into the cylinder 1 through the exhaust pipe mounting slit 64 and extends to the top end of the ink cavity 22 in the cylinder 1, then the exhaust pipe 7 is pressed into the exhaust pipe mounting slit 64, the other end of the exhaust pipe 7 does not exceed the lower end 26 of the cylinder, and a proper adhesive is coated on the exhaust pipe mounting slit 64 to prevent air leakage and fix the exhaust pipe 7.

The piston device comprises a piston rod 12 and a piston head 17 arranged in a piston cavity 23 at the upper part of the cylinder body 1, the piston head 17 is connected to a piston rod outer convex ring 13 at the lower end of the piston rod 12, and the lower part of a baffle ring 14 is next to the piston rod outer convex ring 13 and is connected with the piston rod outer convex ring 13 into a whole. The piston head 17 is connected with the pressing spring device through the piston rod 12, and the piston head 17 and the piston pressing device are fixed through a retainer ring pad 50; the piston pressing device comprises a retainer ring pad 50 fixedly arranged at the upper part of the cylinder body 1, a spring 18 and a pressing cover 19; the baffle ring pad 50, the spring 18 and the pressing cover 19 are sleeved on the piston rod 12; the retainer ring pad 50 is sleeved on the piston rod 12 through a retainer ring pad piston rod mounting hole 51, the pressing cover 19 is fixed on the top of the piston rod 12, the barbed head 15 at the upper end of the piston rod 12 is inserted into the barbed head mounting hole 20 in the pressing cover 19, and the piston rod contraction part mounting hole 21 on the pressing cover 19 is arranged outside the piston rod contraction part 16, so that the pressing cover 19 cannot fall off once being mounted on the top end of the piston rod 12. The spring 18 is arranged between the baffle ring pad 50 and the pressing cover 19; the retainer ring cushion 50 is fixedly connected with the cylinder 1 through the convex ring 25, so that the piston rod 12 and the piston head 17 can slide up and down, and when the pressing cover 19 is pressed to the bottom to be close to the retainer ring cushion 50, the whole spring 18 can be retracted in the spring receiving cavity 24.

When the lower end of the ink absorber is installed in the pen point pipe 29, the lower end of the cylinder body 1 and the pen point pipe 29 are in close fit and air-tight through design, when the outer limiting ring 28 on the cylinder body 1 is tightly attached to the pen point pipe end surface 39 on the pen point pipe 29, the lower end part 26 of the cylinder body is tightly attached to the tongue baffle ring 37, a certain gap is kept between the one-way valve body 2 and the tongue baffle ring 37 to form an exhaust channel, and at the moment, most of the water-guiding tail 32 is also installed in the water-guiding tail installation hole 5 of the one-way valve body.

Blotting procedure reference example 2.

The one-way valve body 2 of the ink absorber in the embodiment of the invention is connected with the lower end of the cylinder body 1 into a whole, and the exhaust pipe mounting seam 64 is arranged on the outer wall of the lower end of the cylinder body 1, so that the manufacturing and mounting cost is lower.

In addition, the piston head of the ink absorber in the embodiment is a piston head with larger suction force.

In this embodiment, the ink absorber of the present invention is adapted to absorb ink and write when coupled in alignment with the end surface 39 of the nib of the pen at any point between the marker ring 27 and the outer retainer ring 28. However, the different connection positions have a considerable influence on the writing quality, and the supply of ink is the greatest only when the ink absorber according to the invention is connected with the end face 39 of the nib of the fiber-optic pen in alignment with the outer limit ring 28. Therefore, the connection position can be adjusted according to the required ink supply amount required by different fiber pens, refer to example 2 and example 3.

Example 6

As shown in FIG. 10, a semi-automatic ink-absorbing pen is made by mounting an ink absorber on a penpoint pen with a collar, and comprises a penpoint pen nib, a pen barrel 34, an ink absorber mounted in the pen barrel 34, and a cap 36 sleeved on the pen nib.

The pen point with the dark point consists of an inner pen point 41, a pen tongue 31, a pen point 33 and an outer pen point 44. The inner pen point 41 is provided with a pen tongue baffle ring 37, and a water guide tail mounting hole 38 of the pen tongue baffle ring is arranged in the middle of the pen tongue baffle ring 37; the tongue 31 is provided with a water-guiding tail 32, and the water-guiding tail 32 passes through a tongue baffle ring water-guiding tail mounting hole 38 in the middle of a tongue baffle ring 37 so that the tongue 31 is mounted in the inner pen head 41. The pen point 33 of the pen is sleeved at the front end of the pen tongue 31, and then the outer pen point 44 is sleeved; the inner nib 41 is connected with the barrel 34 through the inner nib external thread 42 and the barrel internal thread 35, and the cap 36 is sleeved outside the outer nib 44. The inner nib 41 has an inner nib outer stop ring 43 for limiting the connection position of the pen holder 34 and the cap 36.

The ink absorber consists of a cylinder body 1, a one-way valve body 2 in the lower end of the cylinder body 1, a one-way valve cavity 3, a one-way valve body water-guiding tail mounting hole 5 and an exhaust pipe mounting hole 59 which are arranged on the one-way valve body 2, a one-way valve ball 4 in the cylinder body 1, an exhaust pipe 7 arranged on the one-way valve body 2 and a piston device which is arranged at the upper end of the cylinder body 1 and fixed by a baffle ring body 61; the valve cavity 3 of the one-way valve can form a one-way valve with a small ball 4 of the one-way valve; the lower end of the one-way valve body 2 is provided with a lantern ring mounting hole 60, and the lantern ring mounting hole 60 is arranged at the lower end of the one-way valve body water diversion tail mounting hole 5; the collar mounting hole 60 is slightly larger than the collar 57, and the gap between the collar mounting hole 60 and the collar 57 is also an exhaust passage for exhausting the exhaust pipe 7; the one-way valve body 2 is provided with an exhaust pipe mounting hole 59, one end of the exhaust pipe 7 is mounted in the exhaust pipe mounting hole 59, the other end of the exhaust pipe 7 extends to the top end of the ink cavity 22 in the cylinder body 1, and the piston head 14 does not touch the exhaust pipe 7 when the pressing cover 19 is pressed to the bottom.

The piston device comprises a piston rod 12 and a piston body arranged in a piston cavity 23 at the upper part of the cylinder body 1, the piston body is formed by connecting a piston rod outer convex ring 13 at the lower end of the piston rod 12 with a piston head 17, the lower part of a baffle ring 14 is next to the piston rod outer convex ring 13 and is used for protecting the piston head 17, the piston head 17 is connected with a pressing spring device through the piston rod 12, and the piston head 17 and the piston pressing device are fixed through a baffle ring body 61; the piston pressing device comprises a retainer ring body 61 fixedly arranged at the upper part of the cylinder body 1, a spring 18 and a pressing cover 19; the stop ring body 61, the spring 18 and the pressing cover 19 are sleeved on the piston rod 12; the retainer ring body 61 is sleeved on the piston rod 12 through a retainer ring body piston rod mounting hole 62, the pressing cover 19 is fixed on the top of the piston rod 12, the barbed head 15 at the upper end of the piston rod 12 is inserted into the barbed head mounting hole 20 in the pressing cover 19, and the piston rod contraction part mounting hole 21 on the pressing cover 19 is arranged outside the piston rod contraction part 16, so that the pressing cover 19 cannot fall off once being mounted on the top end of the piston rod 12. The spring 18 is arranged between the retaining ring body 61 and the pressing cover 19; the blocking ring body 61 is fixedly connected in the cylinder body 1 in a socket joint mode through the outer convex ring 25, and the blocking ring 63 outside the blocking ring body is tightly attached to the upper end face of the cylinder body 1.

When the lower end of the ink absorber is arranged in the inner pen point 41, the lower end of the cylinder body 1 is tightly matched with the inner pen point 41 through design so as to be airtight, and the lower end part 26 of the cylinder body is tightly attached to the pen tongue baffle ring 37, a certain gap is kept between the one-way valve body 2 and the pen tongue baffle ring 37 to form an exhaust channel; the collar 57 is now also largely fitted into the collar mounting hole 60.

When absorbing ink, the pen holder 34 is unscrewed, then the barrel body 1 is held by one hand, the pressing cover 19 is pressed down by the thumb, air in the barrel body 1 is partially discharged, then, the pen nib 33 and the exposed nib 31 are partially or completely immersed in the ink, the thumb is loosened, the spring 18 drives the piston head 17 to move upwards, then the ink is sucked into the ink cavity 22 through the nib 31, the gap between the water guide tail 32 and the collar 57, the water guide tail mounting 5 of the one-way valve body, the pressing cover 19 is pressed again, and the gas in the piston cavity 23 is exhausted through the exhaust pipe 7, the gap between the one-way valve body 2 and the nib stop ring 37, the gap between the collar mounting hole 60 and the collar 57, the collar groove 58, the gap between the water guide tail 32 and the collar 57, and the water guide tail mounting hole 38 of the nib stop ring, and then is exhausted through the gap between the inner cavity of the inner nib 41 and the outer nib 44 and the nib 31. The ink in the ink chamber 22 cannot be discharged due to the action of the one-way valve formed by the one-way valve chamber 3 and the one-way valve ball 4, and the pressing cover 19 can be repeatedly pressed and loosened to repeatedly exhaust and suck ink until the whole ink chamber 22 and part of the piston chamber 23 are filled with ink. After the ink is filled, the pen holder 34 is screwed on and the pen cap 36 is covered.