CN215041632U - Simple continuous ink-absorbing pen - Google Patents

Abstract

The invention provides a simple pen capable of continuously absorbing ink, which comprises a pen point and a pen holder, wherein a pen tongue is arranged in the pen point and is connected with the pen point, an exhaust pipe fixing body is arranged between the pen point and the pen holder, an air cavity area is arranged between the exhaust pipe fixing body and the pen tongue, an exhaust pipe is arranged on the exhaust pipe fixing body, an ink cavity is arranged in the pen holder, and the air cavity area is communicated with the ink cavity in the pen holder through the exhaust pipe; the upper part of the pen holder is provided with a piston pressing device. The air cavity area arranged between the pen tongue and the exhaust pipe fixing body can continuously exhaust and absorb ink by repeatedly pressing and loosening the piston rod button, so that the whole ink cavity and part of the piston cavity are slowly filled with ink. The invention simplifies the element of the pen capable of continuously absorbing ink in the invention patent CN112389113A, so that the manufacture and installation are easier, and the practical value is improved.

Description

Simple continuous ink-absorbing pen

Technical Field

The invention relates to a pen, and belongs to the technical field of daily school supplies.

Technical Field

The invention discloses a pen capable of continuously absorbing ink, and the patent case CN112389113A provides a brand-new ink absorption method, but the pen has a plurality of independent elements, particularly a plurality of small parts, is troublesome to manufacture and install, and increases the manufacturing cost and the installation cost.

Secondly, the invention of patent case CN112389113A is a pen capable of continuously absorbing ink, the manufacturing of the one-way valve cavity in the valve body of the one-way valve is troublesome, and the installation of the small ball of the one-way valve is also very inconvenient, thereby increasing the manufacturing and installation costs.

Thirdly, the invention of patent case CN112389113A is a pen capable of continuously absorbing ink, the connection between the piston rod and the piston rod pressing cap is made by using methods such as thread or bonding, which is troublesome to install, and the connection reliability is not good.

Therefore, these factors make the actual manufacturing and installation of the pen capable of continuously absorbing ink in the invention patent case CN112389113A troublesome and affect the production application.

In addition, a large-capacity pen manufactured by adopting a rotary ink absorber has appeared at present, but the rotary ink absorber needs to be designed to accommodate the space of the piston rod, so that the space occupied by the rotary ink absorber in the pen holder is determined to be very large, and 60% of the space in the pen holder is occupied by the rotary ink absorber, so that the space for storing ink is greatly compressed. Another disadvantage of the rotary ink absorber is that the shaft is required to be made thicker, since the fixing means of the rotary ink absorber is an internal thread, an external thread must be provided on the shaft, and the shaft can be thickened only as much as the outer diameter of the fixing means of the rotary ink absorber for the sake of beauty. For example, a large-capacity pen made of a rotary ink absorber with the total length of 145 mm and the outer diameter of a pen holder of 12.5 mm looks thick, but the inner diameter of a piston cavity is only 8 mm, the piston stroke is only 25 mm, and the theoretical ink storage capacity of the pen is only 1256 cubic mm actually. In addition, the pen is thick and not beautiful enough, and the pen has poor hand feeling and even is not easy to hold or even twist when being used for writing too thick.

The invention provides a pen which has a thin outer diameter, a large capacity and is easy to manufacture.

Disclosure of Invention

The invention aims to solve the problems and provide a simple pen capable of continuously absorbing ink.

The technical scheme adopted by the invention is as follows: a simple pen capable of continuously absorbing ink comprises a pen point and a pen holder, wherein a pen tongue is arranged in the pen point and connected with the pen point, an exhaust pipe fixing body is arranged between the pen point and the pen holder, a certain distance is kept between the exhaust pipe fixing body and the pen tongue, so that an air cavity area is formed, an exhaust pipe is mounted on the exhaust pipe fixing body, an ink cavity is formed in the pen holder, and the air cavity area is communicated with the ink cavity in the pen holder through the exhaust pipe; the upper part of the pen holder is provided with a piston pressing device.

Preferably, the pen tongue is provided with a pen tongue water-leading tail, the exhaust pipe fixing body is provided with a pen tongue water-leading tail mounting hole, and the pen tongue water-leading tail is mounted in the pen tongue water-leading tail mounting hole; or the water-guiding tail of the pen tongue is not arranged in the water-guiding tail mounting hole of the pen tongue, and the distance between the tail end of the water-guiding tail of the pen tongue and the water-guiding tail mounting hole of the pen tongue is kept to be 2.5 mm or less.

Preferably, the pen head is movably connected with the pen holder or the pen head is connected with the pen holder into a whole.

Preferably, the piston pressing device comprises a piston device and a pressing device, the piston device comprises a piston rod and a piston body arranged in a piston cavity at the upper part of the penholder, and the piston body is arranged at the lower end of the piston rod; the pressing device comprises a spring ring blocking pipe, a spring and a piston rod pressing cover which are fixedly arranged at the top of the pen holder, the spring ring blocking pipe, the spring and the piston rod pressing cover are sleeved on the piston rod, the piston rod pressing cover is fixed at the top of the piston rod, and the spring is arranged between the spring ring blocking pipe and the piston rod pressing cover.

Preferably, a piston rod button protective cover for preventing external force from touching the piston rod button is arranged at the upper end of the spring retaining ring pipe.

Preferably, the pen head is externally provided with a pen cap for protecting the pen point.

The invention has the beneficial effects that:

the innovation point of the invention is that the air cavity area is arranged between the pen tongue and the exhaust pipe fixing body, when the volume of the air cavity area is large enough, the phenomenon which cannot be explained by macroscopic hydromechanics occurs, namely, under the condition that no one-way valve is arranged, the piston rod button is repeatedly pressed and loosened, the air exhaust and the ink absorption can be continuously carried out, and the ink is enabled to slowly fill the whole ink cavity and part of the piston cavity. For the reasons, see the ink absorbing process and principle of the pen of the present invention in example 1, and experimental data of the experimental set-up of the pen of the present invention in example 3. Therefore, the implementation of the invention simplifies the element of the pen capable of continuously absorbing ink in the invention patent case CN112389113A, so that the manufacture and installation are easier, and the practical value is improved.

Secondly, the invention adopts the spring ring blocking pipe to arrange the piston pressing device, thereby effectively reducing the wall thickness of the penholder, further increasing the ink capacity in the penholder, and being very suitable for manufacturing small-diameter large-capacity pens, as shown in the chart in the embodiment 1.

Drawings

FIG. 1 is a schematic longitudinal sectional view of a pen with a hidden nib structure, wherein an exhaust pipe fixing body of the pen is movably connected with a pen point according to an embodiment of the invention;

FIG. 2 is a left side view, a top view and a right side view of a pen air vent fixing body according to an embodiment of the present invention;

FIG. 3 is a left side view, longitudinal section and right side view of a spring retainer ring tube in accordance with an embodiment of the present invention;

FIG. 4 is a left side view, a front view and a right side view of a piston rod according to an embodiment of the present invention;

FIG. 5 is a left side view and a longitudinal section of a plunger rod pressing cap of a pen according to an embodiment of the present invention;

FIG. 6 is a schematic longitudinal section of a pen with a hidden nib structure, wherein the pen exhaust pipe fixing body is movably connected with the pen holder according to the embodiment of the invention;

FIG. 7 is a schematic longitudinal sectional view of a pen with an exposed nib structure, wherein the pen exhaust pipe fixing body is movably connected with a pen holder according to the embodiment of the invention;

FIG. 8 is an experimental setup of a pen according to an embodiment of the present invention.

In the figure: 1-nib, 2-nib collar, 3-nib collar, 4-nib external thread, 5-tongue, 6-tongue tail, 7-nib, 8-cap, 9-vent-tube holder, 10-tongue tail mounting hole, 11-vent-tube mounting hole, 12-air cavity region, 13-vent-tube, 14-shaft, 15-shaft lower internal thread, 16-shaft lower end face, 17-shaft upper internal thread, 18-shaft upper end face, 19-spring collar, 20-spring collar external collar, 21-spring collar lower external thread, 22-spring collar upper external thread, 23-piston-rod mounting hole, 24-spring collar internal collar, 25-piston rod, 26-piston-rod collar, 27-piston-head collar, 28-piston-rod burr head, 29-piston-rod burr head protruding ring, 30-piston-head, 31-spring, 32-piston-rod pressing cap, 33-piston rod stinging head mounting hole, 34-piston rod stinging head mounting hole inner concave ring, 35-piston rod button protective cover, 36-piston rod button protective cover inner thread, 37-tongue baffle ring, 38-tongue baffle ring water diversion tail mounting hole, 39-pen head inner thread, 40-pen holder lower end outer thread, 41-pen head lower baffle surface, 42-pen head upper end surface, 43-exhaust pipe fixed body baffle, 44-pen head tongue baffle ring, 45-pen head tongue water diversion tail mounting hole, 46-pen holder inner baffle, 47-ink cavity.

Detailed Description

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

Embodiment 1 is a simple continuous ink-absorbing pen in which a pen exhaust pipe fixing body is movably connected with a pen head and a dark-point pen structure is adopted

A simple pen capable of continuously absorbing ink is shown in figure 1 and comprises a pen head 1 and a pen holder 14, wherein a pen cap 8 is arranged outside the pen head 1 and used for protecting a pen point 7; a pen tongue 5 is arranged in the pen head 1, and the pen tongue 5 is connected with a pen point 7; the exhaust pipe fixing body 9 is arranged in the pen point 1, and a certain distance is kept between the exhaust pipe fixing body 9 and the pen tongue 5, so that an air cavity area 12 is formed; the exhaust pipe 13 is mounted through one end in the exhaust pipe mounting hole 11 in the exhaust pipe fixing body 9, but its main portion is located in the ink chamber 47; the piston pressing device is arranged at the upper part of the penholder 14, the upper part in the penholder 14 is a piston cavity with a piston body moving up and down, and the lower part in the penholder 14 is an ink cavity 47 for storing ink; the upper end of the penholder 14 is provided with a spring ring retaining pipe 19 and a piston rod button protection cover 35, and the spring ring retaining pipe 19 is used for fixing the piston pressing device. The invention relates to a simple and easy installation process of a pen capable of continuously absorbing ink.

Pen elements are first customized according to fig. 1 to 5 and then installed as follows:

firstly, the tongue baffle ring and water tail mounting hole 38 on the tongue baffle ring 37 is sleeved on the tongue water tail 6 on the tongue 5, and then the tongue baffle ring 37, the tongue 5 and the pen point 7 are installed in the pen head 1 together, so that the tongue baffle ring 37 blocks and fixes the tongue 5.

The outer wall of one end of the exhaust pipe 13 is coated with a suitable adhesive and then inserted into the exhaust pipe mounting hole 11 of the exhaust pipe fixing body 9 so that one end of the exhaust pipe 13 slightly protrudes out of the exhaust pipe mounting hole 11. And then the outer wall of the exhaust pipe fixing body 9 is coated with a proper adhesive, and then the exhaust pipe fixing body is jacked into the pen head 1 by a proper tool, so that the exhaust pipe fixing body stop block 43 is tightly attached to the pen tongue stop ring 37, and meanwhile, the pen tongue water guide tail mounting hole 10 on the exhaust pipe fixing body 9 is sleeved on the pen tongue water guide tail 6. At this time, the exhaust tube fixing body stopper 43 keeps the exhaust tube fixing body 9 at a distance from the tongue stopper ring 37 and forms an air cavity region 12, and the air cavity region 12 provides an exhaust passage for the exhaust tube 13 to suck and exhaust air. Then the pen cap 8 is covered, so that the pen point convex ring 2 is tightly sleeved in the pen cap 8, and the pen cap 8 is tightly attached to the pen point outer retaining ring 3.

Then, a proper adhesive is coated on the external thread 4 of the pen point, the internal thread 15 at the lower end of the pen holder on the pen holder 14 is screwed with the external thread, so that the lower end face 16 of the pen holder is tightly attached to the external retaining ring 3 of the pen point, and the extruded excessive adhesive is wiped off.

Then the piston rod 25 is firstly sleeved with the piston head 30, so that the piston rod convex ring 26 is positioned in the piston head 30, then the spring retaining ring pipe 19 is sleeved with the piston rod mounting hole 23 on the spring retaining ring pipe 19, then the spring 31 is sleeved, and then the piston rod pressing cover 32 is sleeved with force, so that the piston rod thorn head 28 is inserted into the piston rod thorn head mounting hole 33, and the piston rod thorn head convex ring 29 is tightly attached to the concave ring 34 in the piston rod thorn head mounting hole.

The piston rod pressing cover 32 is made of plastic and can generate certain deformation, and after the piston rod stabbing head 28 is inserted into the piston rod stabbing head mounting hole 33, due to stress contraction, the piston rod stabbing head mounting hole inner concave ring 34 blocks the piston rod stabbing head convex ring 29, so that the piston rod stabbing head 28 is difficult to fall off once installed. Before installation, a suitable adhesive may be applied to the interior of the bore 33 for the plunger rod spike to provide a more secure connection with the plunger rod spike 28.

Then the piston head 30 of the piston pressing device with the spring retainer ring 19 is inserted into the upper part of the penholder 14, and the external thread 21 at the lower end of the spring retainer ring and the internal thread 17 at the upper end of the penholder are screwed tightly, so that the upper end face 18 of the penholder is tightly attached to the external retainer ring 20 of the spring retainer ring. The piston rod button protective cover internal thread 36 on the piston rod button protective cover 35 and the spring retainer ring pipe upper end external thread 22 are screwed in place. After the adhesive is cured, the pen can be normally used for writing. Thus, a simple pen capable of continuously absorbing ink is obtained.

According to the invention, the piston head retaining ring 27 is arranged on the piston rod 25, so that the piston head 30 is not influenced by the elasticity of the spring 31 when the piston head is not subjected to ink absorption operation, and the service life of the piston head 30 is prolonged; in addition, the outer diameter of the piston head retaining ring 27 is only slightly smaller than the inner diameter of the pen holder 14 during design and manufacture, so that the piston rod 25 can slide up and down stably during ink absorption operation without large shaking.

Due to the interaction between the piston head retainer 27 and the spring retainer ring inner retainer 24 and the piston rod pressing cap 32, the spring 31 can only slide up and down between the spring retainer ring inner retainer 24 and the piston rod pressing cap 32, so that the piston head 30 can only slide up and down in a limited position.

According to the experimental phenomena and experimental data in example 3, the ink suction process and principle of the pen of the present invention are roughly as follows: before absorbing ink, the piston rod button protective cover 35 is firstly screwed out, then the pen cap 8 is pulled out, then the pen is held by one hand, the pen head 1 is downward, then the piston rod button consisting of the piston rod 25 and the piston rod pressing cover 32 is pressed down, the piston rod 25 drives the piston head 30 to move downward, partial air in the pen holder 14 passes through the exhaust pipe 13 and the tongue water tail mounting hole 10, and after passing through the tongue 5, the air is exhausted from the pen head 1 after passing through the air cavity area 12; the pen head 1 is then immersed in the ink, the piston rod button is then released, the spring 31 drives the piston rod button and the piston head 30 to move upwards to generate vacuum, and then the ink is sucked into the ink cavity 47 in the pen holder 14 through the ink supply channel in the pen tongue 5 and the pen tongue water guide tail 6. Rather than filling the entire air cavity region 12 before being drawn into the ink chamber 47.

After ink is sucked for the first time, the ink soaks the gap between the pen tongue water guide tail mounting hole 10 and the pen tongue water guide tail 6 with the capillary action, the ink supply channel of the pen tongue water guide tail 6, the gap between the pen tongue baffle ring water guide tail mounting hole 38 and the pen tongue water guide tail 6 and the pen tongue 5 respectively above, in the middle and below the air cavity area 12, and under the condition that the volume of the air cavity area 12 is large enough, the adsorption action of the inner wall cavity between the pen tongue baffle ring 37 and the exhaust pipe fixing body 9 on the ink is far smaller than the adsorption action of the components with the capillary action on the ink; meanwhile, the air vent pipe 13 communicates the air cavity area 12 with the ink cavity 47 in the penholder 14, and adjusts the pressure of the air cavity area 12, so that the air cavity area 12 is always filled with air, ink cannot accumulate in the air cavity area 12, once accumulated ink is sucked away by the components with capillary action, a large amount of continuous ink cannot be formed in the air cavity area 12, and ink can be sucked and output only through an ink supply channel in the water guide tail 6 of the pen tongue 5 and the ink cavity 47 in the penholder 14. When absorbing ink and exhausting air, because the ink in the ink cavity 47 can only be discharged through the ink supply channel of the tongue water guide tail 6, the ink flow rate of the ink supply channel of the tongue water guide tail 6 can be reduced due to the adsorption effect of the capillary component and the hydrophobicity of the air in the air cavity area 12, so that the ink discharging speed is very slow. Meanwhile, since the viscosity of air is much less than that of ink, for example, at 10 ℃, the viscosity of air is only 1.77% of that of water, the adsorption of the inner cavity wall between the tongue baffle ring 37 and the exhaust pipe fixing body 9 to air can be ignored, so that the air exhaust speed is very fast. In the exhaust, even if ink is present in the exhaust pipe 13, the ink is exhausted in a very small amount. Since the air discharge speed is much greater than the ink discharge speed. The air in the pen holder 14 is preferentially discharged when the ink is sucked and discharged, so that the pen can continuously discharge and suck ink by repeatedly pressing and releasing the piston rod button without adopting a one-way valve, and the ink is slowly filled in the whole ink cavity 47 and part of the piston cavity.

Due to the reasons, the pen of the invention is difficult to discharge the ink in the ink cavity 47 in a basically vertical state, and only under the condition that the pen of the invention is horizontally placed, a part of the ink in the ink cavity 47 can be discharged; the ink stored in the piston chamber is very easily discharged.

When absorbing ink, the ink does not usually pass through the exhaust pipe 13, and only when the gap formed between the tongue water-leading tail mounting hole 10 in the exhaust pipe fixing body 9 made of elastic material and the tongue water-leading tail 6 is too small, the ink can be sucked into the penholder 14 through the exhaust pipe 13 and the two ink supply channels in the tongue water-leading tail 6. After the ink in the ink cavity is fully absorbed, the ink discharged from the piston cavity is also discharged through the ink supply channel in the water guide tail 6 of the pen tongue, and the air cavity area 12 cannot be filled in first.

When the volume of the air cavity area 12 is not enough, the inner cavity wall between the pen tongue baffle ring 37 and the exhaust pipe fixing body 9 can absorb a large amount of ink, and the ink in the ink supply channel of the pen tongue water guide tail 6 form a large amount of coherent ink. At this time, pressing the plunger rod button discharges only the ink previously sucked, not the air in the barrel 14.

After the blotting operation is completed, the piston rod button protecting cover 35 is screwed on, and the cap 8 is covered, so that the blotting operation is completed.

The pen of the invention has larger ink storage capacity, so the ink does not need to be stored in the piston cavity, and the redundant ink in the pen tongue 5 can be sucked into the pen holder 14, thereby overcoming the defect that the pen tongue 5 stores more ink after other pens absorb ink.

The exhaust pipe fixing body 9 can be made of elastic materials, such as rubber, silica gel, latex and the like, and the outer diameter of the exhaust pipe fixing body is slightly larger than the inner diameter of the pen point 1/the pen holder 14 during design and manufacture, so that the exhaust pipe fixing body cannot be loosened once the exhaust pipe fixing body is installed in the pen point 1/the pen holder 14. The exhaust pipe fixing body 9 made of elastic material can be directly penetrated by a capillary metal pipe without arranging an exhaust pipe mounting hole 11.

The exhaust pipe fixing body 9 may be made of plastic.

The exhaust pipe fixing body stopper 43 may be designed in various forms; a stopper for limiting the position of the exhaust pipe fixing body 9 can be arranged in the pen head 1 or the pen holder 14, and the same effect can be achieved by arranging 4 pen holder inner stoppers 46 in the pen holder in embodiment 3.

The volume of the air cavity area 12 is different according to the inner diameter of the pen holder 14, the shape, the material and the like of the pen tongue baffle ring 37 and the exhaust pipe fixing body baffle block 43/the pen holder inner baffle block 46, the volume of the minimum air cavity area 12 can be determined through experiments, the volume of the actually selected air cavity area 12 is larger than that of the minimum air cavity area 12, and the fact that ink cannot be adsorbed on the inner cavity wall between the pen tongue baffle ring 37 and the exhaust pipe fixing body 9 is guaranteed. If the air cavity region 12 has ink stored therein and is unable to continuously absorb ink, the volume of the air cavity region 12 is insufficient. For a pen with a small inner diameter, the pen tongue 5 with a longer pen tongue water-guiding tail 6 can be selected, and then the local inner diameter of the pen head 1 or the pen holder 14 can be designed to be a little larger. The specific application needs to be determined through experiments.

The aperture of the tongue water guide tail mounting hole 10 in the exhaust pipe fixing body 9 cannot be too large, and the aperture can refer to the data of the fountain pen tongue water guide tail mounting hole designed in the prior art.

In some cases, when the distance between the tongue water-leading tail mounting hole 10 in the air-vent pipe fixing body 9 and the tongue water-leading tail 6 of the tongue 5 can be kept at 2.5 mm or less, the ink can be continuously sucked as it is, but the influence of the material is great, so that a part of the tongue water-leading tail mounting hole 10 is preferably sleeved on the tongue water-leading tail 6.

The exhaust pipe 13 can be made of a capillary metal pipe, and the capillary metal pipe can be made thin, occupies a small space for installation and has high strength. However, the inner diameter of the exhaust pipe 13 cannot be too small, and resistance when air is discharged becomes large.

The exhaust pipe 13 can also be made of a thin plastic pipe, but the plastic pipe cannot be made too thin easily, so that the installation space is relatively large.

The following table shows the ink storage data of the pen of the present invention.

The above table shows that the embodiment of the invention is calculated according to actual data and the like of a pen element and a large-capacity pen manufactured by adopting a rotary ink absorber, and the pen is manufactured into a simple pen capable of continuously absorbing ink with the total length of 145 mm, the exhaust pipe adopts a capillary metal pipe with the outer diameter of 0.51 mm, and the top end of the exhaust pipe 13 is arranged at the top end of the ink cavity for design calculation.

As can be seen from the above table, the pen manufactured by adopting the outer diameter of 8 mm and the inner diameter of 6 mm has larger ink storage capacity than the large-capacity pen manufactured by adopting the rotary ink absorber with the outer diameter of 12.5 mm, so that the pen can meet the actual requirements of most people only by adopting the pen with smaller outer diameter and smaller inner diameter.

In addition, the invention adopts the spring collar pipe 19 to fix the piston pressing device, reduces the wall thickness of the pen holder 14, overcomes the defects caused by the invention of a pen capable of continuously absorbing ink in patent case CN112389113A and a large-capacity pen manufactured by adopting a rotary ink absorber needing to adopt a thicker pen holder, and improves the ink capacity; and at the same time, the installation space of the spring 31 is large, so that the range of the spring 31 is large.

Embodiment 2 is a simple continuous ink-absorbing pen manufactured by movably connecting a pen exhaust pipe fixing body and a pen holder and adopting a dark-tip pen structure

Referring to fig. 2 to 5 and fig. 6, the tongue baffle ring and the water guide tail mounting hole 38 of the tongue baffle ring 37 is firstly sleeved on the tongue water guide tail 6 of the tongue 5, and then the tongue baffle ring 37, the tongue 5 and the nib 7 are installed in the nib 1 together, so that the tongue baffle ring 37 blocks and fixes the tongue 5. Then the pen cap 8 is covered, so that the pen point convex ring 2 is tightly sleeved in the pen cap 8, and the pen cap 8 is tightly attached to the pen point lower blocking surface 41 of the pen point 1.

The outer wall of one end of the exhaust pipe 13 is coated with a suitable adhesive and then inserted into the exhaust pipe mounting hole 11 of the exhaust pipe fixing body 9 so that one end of the exhaust pipe 13 slightly protrudes out of the exhaust pipe mounting hole 11. Then, the outer wall of the exhaust pipe fixing body 9 is coated with a suitable adhesive, and then the exhaust pipe fixing body 9 with the exhaust pipe 13 mounted thereon is pushed into the lower end of the pen holder 14 by a suitable tool, the air cavity area 12 is communicated with the ink cavity 47 by the exhaust pipe 13, and the main part of the air cavity area is located in the ink cavity 47.

Then, the external thread 40 at the lower end of the pen holder 14 is coated with a suitable adhesive, and then is screwed with the internal thread 39 of the pen head, so that the lower end face 16 of the pen holder 14 is tightly attached to the upper end face 42 of the pen head 1 of the pen head, and the extruded excessive adhesive is wiped off. At the moment, the exhaust pipe fixing body stop block 43 is tightly attached to the pen tongue retaining ring 37 and blocks the pen tongue retaining ring 37, so that the function of assisting in fixing the pen tongue 5 is achieved; meanwhile, a tongue water-leading tail mounting hole 10 on the exhaust pipe fixing body 9 is sleeved on the tongue water-leading tail 6, and the tongue baffle ring 37 keeps a certain distance from the exhaust pipe fixing body 9 by the exhaust pipe fixing body baffle block 43 to form an air cavity area 12.

Then the piston rod 25 is firstly sleeved with the piston head 30, so that the piston rod convex ring 26 is positioned in the piston head 30, then the spring retaining ring pipe 19 is sleeved with the piston rod mounting hole 23 on the spring retaining ring pipe 19, then the spring 31 is sleeved, and then the piston rod pressing cover 32 is sleeved with force, so that the piston rod thorn head 28 is inserted into the piston rod thorn head mounting hole 33, and the piston rod thorn head convex ring 29 is tightly attached to the concave ring 34 in the piston rod thorn head mounting hole. Due to the interaction between the piston head retainer 27 and the spring retainer ring inner retainer 24 and the piston rod pressing cap 32, the spring 31 can only slide up and down between the spring retainer ring inner retainer 24 and the piston rod pressing cap 32.

Then the piston head 30 of the piston pressing device with the spring retainer ring 19 is inserted into the upper part of the penholder 14, and the external thread 21 at the lower end of the spring retainer ring and the internal thread 17 at the upper end of the penholder are screwed tightly, so that the upper end face 18 of the penholder is tightly attached to the external retainer ring 20 of the spring retainer ring. The piston rod button protective cover internal thread 36 on the piston rod button protective cover 35 and the spring retainer ring pipe upper end external thread 22 are screwed in place. After the adhesive is solidified, the pen can be normally used for writing, so that a simple pen capable of continuously absorbing ink is obtained.

Embodiment 3 is a simple continuous ink-absorbing pen manufactured by fixedly connecting a pen head and a pen holder into a whole and adopting a pen structure with a clear tip according to the embodiment of the invention

Referring to fig. 2 to 5 and fig. 7, the nib 7 and the tongue 5 are first installed in the nib 1, and the tongue water guide tail 6 is installed in the nib tongue water guide tail installation hole 45 of the nib 44, so that the tongue 5 is tightly attached to the nib 44. Then the pen cap 8 is covered, so that the protruding ring 2 of the pen point is tightly sleeved in the pen cap 8, and the pen cap 8 is tightly attached to the lower end face 16 of the pen holder.

The outer wall of the exhaust pipe 13 at one end is coated with a suitable adhesive and then inserted into the exhaust pipe mounting hole 11 of the exhaust pipe fixing body 9. Then, the exhaust pipe fixing body 9 provided with the exhaust pipe 13 is pushed into the penholder 14 by using a proper tool, so that the exhaust pipe fixing body 9 is tightly attached to the penholder internal stop 46, the tongue water-leading tail mounting hole 10 on the exhaust pipe fixing body 9 is also sleeved on the tongue water-leading tail 6, the air cavity area 12 is communicated with the ink cavity 47 by the exhaust pipe 13, and the main part of the exhaust pipe is positioned in the ink cavity 47.

In the present embodiment, 4 barrel internal stoppers 46 are arranged in the barrel 14, so that the air cavity area 12 is formed by keeping a certain distance between the air exhaust pipe fixing body 9 and the pen point tongue stopper ring 44.

Then the piston rod 25 is firstly sleeved with the piston head 30, so that the piston rod convex ring 26 is positioned in the piston head 30, then the spring retaining ring pipe 19 is sleeved with the piston rod mounting hole 23 on the spring retaining ring pipe 19, then the spring 31 is sleeved, and then the piston rod pressing cover 32 is sleeved with force, so that the piston rod thorn head 28 is inserted into the piston rod thorn head mounting hole 33, and the piston rod thorn head convex ring 29 is tightly attached to the concave ring 34 in the piston rod thorn head mounting hole. Due to the interaction between the piston head retainer 27 and the spring retainer ring inner retainer 24 and the piston rod pressing cap 32, the spring 31 can only slide up and down between the spring retainer ring inner retainer 24 and the piston rod pressing cap 32.

Then the piston head 30 of the piston pressing device with the spring retainer ring 19 is inserted into the upper part of the penholder 14, and the external thread 21 at the lower end of the spring retainer ring and the internal thread 17 at the upper end of the penholder are screwed tightly, so that the upper end face 18 of the penholder is tightly attached to the external retainer ring 20 of the spring retainer ring. The piston rod button protective cover internal thread 36 on the piston rod button protective cover 35 and the spring retainer ring pipe upper end external thread 22 are screwed in place. After the adhesive is solidified, the pen can be normally used for writing, so that a simple pen capable of continuously absorbing ink is obtained.

The exhaust pipe fixing body 9 of the present embodiment is preferably made of an elastic material.

In the embodiment, the pen point 1 and the pen holder 14 are designed as a whole, and can be formed by one-time injection molding, so that the manufacturing cost and the installation cost can be reduced, and the pen is very suitable for manufacturing a pen with a sharp point.

Fig. 8 shows an experimental setup of a pen according to this embodiment. In the experimental device, the main body part of the pen is obtained by modifying a large-capacity pen made of a rotary ink absorber after removing the rotary ink absorber. The internal diameter of the large-capacity pen piston cavity made of the rotary ink absorber is 8 millimeters, and the internal diameter of the rotary ink absorber accommodating cavity for accommodating the piston rod at the upper end of the pen holder is about 9 millimeters.

In the experimental device, the exhaust pipe fixing body 9 is made of a latex plug, and a tongue water guide tail mounting hole 10 in the middle of the latex plug is about 1.5 mm in diameter. The exhaust tube 13 is made of a needle of a 2 ml syringe, and the outer diameter of the needle is about 0.51 mm, and the inner diameter of the needle is about 0.25 mm; the piston pressing device is mainly formed by modifying a piston head and a piston rod of a 2 ml syringe, and the outer diameter of the piston head is about 9 mm.

The inventor finds through experiments that the experimental device can continuously absorb ink when the distance between the tongue water-drawing tail mounting hole 10 and the tongue water-drawing tail 6 is kept below 2.5 mm; however, when the distance between the tongue water guide tail mounting hole 10 and the tongue water guide tail 6 is greater than or equal to 3 mm, ink cannot be continuously sucked, and the last sucked ink is completely discharged when air is exhausted. When a small section of plastic tube with the inner diameter of about 1.6 mm is placed in the manually-manufactured tongue water-leading tail mounting hole 10 and the distance between the tongue water-leading tail mounting hole 10 and the tongue water-leading tail 6 is kept at 2 mm, continuous ink absorption cannot be achieved. The pen element material has a great influence.

When the circumference of the water-drawing tail 6 of the pen tongue in front of the exhaust pipe fixing body 9 is filled with an annular filling ring made of polystyrene foam heat-insulating material with the thickness of about 3 mm, continuous ink absorption cannot be realized. This illustrates that the volume of the air cavity region 12 is important and critical to the successful implementation of the present invention.

According to the experimental data, the volume of the minimum air cavity area of the experimental device is estimated to be 50-100 cubic millimeters.

The above description is for the purpose of illustrating the preferred embodiments in detail, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (7)

1. The utility model provides a simple and easy pen that can absorb ink in succession, includes nib (1) and pen-holder (14), its characterized in that: the pen comprises a pen point (1), a pen tongue (5) is arranged in the pen point (1), the pen tongue (5) is connected with a pen point (7), an exhaust pipe fixing body (9) is arranged between the pen point (1) and a pen holder (14), a certain distance is kept between the exhaust pipe fixing body (9) and the pen tongue (5), an air cavity area (12) is formed, an exhaust pipe (13) is installed on the exhaust pipe fixing body (9), an ink cavity (47) is arranged in the pen holder (14), and the air cavity area (12) is communicated with the ink cavity (47) in the pen holder (14) through the exhaust pipe (13); the upper part of the penholder (14) is provided with a piston pressing device.

2. A simple continuous ink-absorbing pen as claimed in claim 1, wherein the tongue (5) has a tongue water tail (6), the air-bleed duct fixing body (9) has a tongue water tail mounting hole (10), and the tongue water tail (6) is mounted in the tongue water tail mounting hole (10); or the tongue water-leading tail (6) is not arranged in the tongue water-leading tail mounting hole (10), and the distance between the tail end of the tongue water-leading tail (6) and the tongue water-leading tail mounting hole (10) is kept to be 2.5 mm or less.

3. A simple pen capable of absorbing ink continuously as claimed in claim 1 or 2, wherein the pen head (1) is movably connected with the pen holder (14) or the pen head (1) is connected with the pen holder (14) as a whole.

4. A simple pen capable of continuously absorbing ink according to claim 3, wherein said piston pressing means comprises a piston means and a pressing means, said piston means comprises a piston rod (25) and a piston body mounted in a piston chamber at the upper part of the pen body (14), the piston body is mounted at the lower end of the piston rod (25); the pressing device comprises a spring ring blocking pipe (19), a spring (31) and a piston rod pressing cover (32) which are fixedly arranged at the top of the pen holder (14), the spring ring blocking pipe (19), the spring (31) and the piston rod pressing cover (32) are sleeved on the piston rod (25), the piston rod pressing cover (32) is fixed at the top of the piston rod (25), and the spring (31) is arranged between the spring ring blocking pipe (19) and the piston rod pressing cover (32).

5. A simple continuous ink-receptive pen as claimed in claim 4, characterized in that the spring grommet (19) is screwed to the top of the pen body (14).

6. A simple continuous blotting pen as in claim 4, characterized by said spring retainer collar (19) having at its upper end a piston rod button protective cap (35) preventing external forces from touching the piston rod button.

7. A simple, continuous ink-receptive pen as claimed in claim 6, characterized in that the said tip (1) is externally provided with a cap (8) for protecting the nib (7).

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