阅读说明：本技术 新型一次性环保笔芯 (Novel disposable environmental protection refill ) 是由 黄斌 崔宇鹏 吴际菲 朱辉 李正东 于 2021-01-20 设计创作，主要内容包括：本发明公开了一种新型一次性环保笔芯,包括笔管和笔头部,笔管内填充有油墨体,笔头部包括壳体和笔头,所述笔管两端敞口,顶部设有一真空按压装置；壳体与笔管间设有一放气阀装置。真空按压装置能实现简单的按压,就将笔管内的油墨体下压的功能。当笔芯在不小心掉地上后笔管内可能会出现油墨断开,或笔头部损坏进行更换后,放气阀装置能通过简单的按压动作,释放笔头里压强气体,将笔管内的油墨体下压到笔头中。这两个结构可单独或结合使用,能快速让油墨完全融入笔头中,使书写流畅。笔管和笔头部可拆卸连接,则笔头部损坏可进行更换,从而无需更换整体,能降低笔芯的替换率,节省材料。本发明可单独作为笔独立使用,也可以作为笔芯使用。(The invention discloses a novel disposable environment-friendly pen core, which comprises a pen tube and a pen head part, wherein an ink body is filled in the pen tube, the pen head part comprises a shell and a pen head, two ends of the pen tube are open, and the top of the pen tube is provided with a vacuum pressing device; an air release valve device is arranged between the shell and the pen tube. The vacuum pressing device can realize the function of pressing down the ink body in the pen tube by simple pressing. When the ink in the pen tube is broken after the pen core falls to the ground carelessly or the pen head is damaged for replacement, the air release valve device can release pressure gas in the pen head through simple pressing action to press the ink in the pen tube into the pen head. The two structures can be used independently or in combination, so that the ink can be quickly and completely blended into the pen point, and the writing is smooth. The pen tube is detachably connected with the pen head, and the pen head can be replaced when damaged, so that the whole pen does not need to be replaced, the replacement rate of the pen core can be reduced, and materials are saved. The invention can be independently used as a pen and also can be used as a refill.)

1. The utility model provides a novel disposable environmental protection refill, includes pen tube and nib portion, and the intussuseption of pen tube is filled with the ink body, and nib portion includes casing and the nib of wearing out from the casing bottom, its characterized in that: the two ends of the pen tube are open, and the top of the pen tube is provided with a vacuum pressing device;

the vacuum pressing device comprises an inner barrel body with an opening at the upper part, the inner barrel body is positioned in the pen tube, the outer wall of the inner barrel body is attached and fixed with the inner wall of the pen tube, and the top of the inner barrel body is flush with the top of the pen tube;

a pressing body is arranged in the inner cylinder body, the pressing body comprises a top cover, a piston body and a piston plate which are sequentially connected from top to bottom and coaxially arranged, the diameter of the top cover is larger than the inner diameter of the inner cylinder body, the piston body and the piston plate are positioned in the inner cylinder body and matched with a piston of the inner cylinder body, and a telescopic spring is arranged between the piston plate and the bottom of the inner cylinder body;

the pen container is characterized in that a vent pipe is arranged in the piston body, one end of the vent pipe is located at the top of the side wall of the piston body, the other end of the vent pipe is located at the center of the bottom of the piston body, a through hole is formed in the center of the piston plate, an upper sealing cover is arranged at the through hole, a through hole is formed in the center of the bottom of the inner cylinder body, a lower sealing cover is arranged at the through hole, when the vent pipe is shielded by the inner cylinder body due to the fact that the telescopic spring is compressed, the upper sealing cover is closed, the lower sealing cover is opened, when the telescopic spring is reset, the upper sealing cover;

the shell of the pen head part is detachably connected with the pen tube.

2. A novel disposable environmental protection refill according to claim 1, characterized in that: a gas release valve device is arranged between the shell and the pen tube and comprises a first pipeline and a second pipeline which are vertically arranged, the first pipeline is positioned in the pen tube, the bottom of the first pipeline is flush with the bottom of the pen tube, and the second pipeline is positioned in the shell, the top of the second pipeline is flush with the top of the shell;

a first annular plate is fixed at the bottom of the first pipeline, a first vertical rod is arranged in the first pipeline, a strip-shaped groove is vertically arranged on the side wall of the pen holder corresponding to the first pipeline, a pushing piece is arranged on the outer side of the pen holder, penetrates through the strip-shaped groove to be connected with the first vertical rod, can drive the first vertical rod to move up and down and penetrate through the center of the first annular plate, a second annular plate is fixed on the first vertical rod, and a first spring body is sleeved on the first vertical rod between the first annular plate and the second annular plate;

a third annular plate is fixed at the bottom of the second pipeline, a fourth annular plate is arranged in the second pipeline, a second vertical rod is fixedly connected to the middle of the fourth annular plate, and a second spring body is arranged between the third annular plate and the fourth annular plate;

when the shell is connected with the pen tube, the first vertical rod is opposite to the second vertical rod, and when the pushing piece is pressed downwards, the pushing piece drives the first vertical rod to penetrate through the first annular plate to move downwards, so that the second vertical rod moves downwards; when the pushing sheet is released, the first vertical rod and the second vertical rod are reset under the action of the first spring body and the second spring body respectively;

and when the second vertical rod resets, the traction mechanism pulls the plug to open the air release valve, and when the second vertical rod resets, the traction mechanism pulls the plug to close the air release valve.

3. A novel disposable environmental protection refill according to claim 1, characterized in that: the detachable connection is a rotary clamping connection, and specifically comprises: the pen tube bottom is equipped with an annular body, is equipped with the recess that matches with the annular body outer wall in the casing, and the relative both sides of recess inner wall are equipped with the spring ball, and the relative both sides of annular body outer wall are equipped with vertical groove, and vertical groove top extends horizontal groove to one side respectively, and when pen tube and written portion were connected, the annular body was located the recess, and two spring balls can slide to the one end that the vertical groove was kept away from to the horizontal groove along vertical groove respectively.

4. A novel disposable environmental protection refill according to claim 1, characterized in that: the wall thickness of the pen tube is reduced from top to bottom.

Technical Field

The invention relates to a pen core, in particular to a novel disposable environment-friendly pen core.

Background

Gel pens are common tools for writing. However, after the pen point falls on the ground carelessly in the writing process, the pen point can be damaged, air bubbles can be generated in the ink, and the ink can be broken, so that the gel pen can not be used, or the phenomenon of unsmooth writing can be caused. At the moment, a lot of ink in the refill is not used up, but most people can directly replace the refill or replace the refill and the pen together because the price of the pen or the refill is very low. This has the problem of wasting material, and is very environmentally unfriendly.

However, at present, no pen can solve the problems of pen point damage or bubble and disconnection in the pen ink, and after the pen point is damaged, the pen point damage or the bubble can cause unsmooth writing, so how to simply and effectively solve the problems, so that people insist on using up the ink in the pen refill and then replacing the pen refill is very important. Therefore, the existing pen core has the following problems:

(1) is not environment-friendly and wastes materials.

(2) The utilization rate is low, and when the writing pen can not be normally used after being carelessly dropped on the ground in the writing process, the pen core or even the whole pen needs to be replaced.

(3) The repeated utilization rate is low, the pen point can not write, the pen point is damaged, or the ink can not be used up when bubbles appear in the ink, and the ink can not be used continuously after being replaced.

(4) The pen can not write when being used after being placed for a period of time, and can be continuously used only by being thrown by hands.

(5) When the pen falls down, the ink of the pen core can be disconnected, and the ink can be supplied insufficiently and cannot be used continuously in the subsequent use process.

(6) When the pen point has a problem, for example, the steel ball of the pen point is lost, the pen point can not be replaced independently, and the pen point can not be replaced independently and specifically in the market, and only the pen core is replaced or the whole pen is replaced.

(7) After the ink cartridge is placed at a certain air temperature or in an environment for a long time, ink of the ink cartridge can flow backwards and overflow because the top end of the ink cartridge is open, and the ink cartridge is not blocked from being contacted with outside air.

(8) The existing pen core is fine, is not used to directly use, is not firm to hold and does not accord with human engineering.

Disclosure of Invention

The invention aims to solve the problems, and the problem that ink is not smooth due to the fact that a refill is broken can be conveniently solved, so that people can completely use up the ink in the refill, the replacement rate of the refill is reduced, materials are saved, and the disposable environment-friendly refill is environment-friendly.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a novel disposable environment-friendly refill comprises a pen tube and a pen head part, wherein an ink body is filled in the pen tube, the pen head part comprises a shell and a pen head penetrating out of the bottom of the shell, two ends of the pen tube are open, and a vacuum pressing device is arranged at the top of the pen tube;

the vacuum pressing device comprises an inner barrel body with an opening at the upper part, the inner barrel body is positioned in the pen tube, the outer wall of the inner barrel body is attached and fixed with the inner wall of the pen tube, and the top of the inner barrel body is flush with the top of the pen tube;

a pressing body is arranged in the inner cylinder body, the pressing body comprises a top cover, a piston body and a piston plate which are sequentially connected from top to bottom and coaxially arranged, the diameter of the top cover is larger than the inner diameter of the inner cylinder body, the piston body and the piston plate are positioned in the inner cylinder body and matched with a piston of the inner cylinder body, and a telescopic spring is arranged between the piston plate and the bottom of the inner cylinder body;

the pen container is characterized in that a vent pipe is arranged in the piston body, one end of the vent pipe is located at the top of the side wall of the piston body, the other end of the vent pipe is located at the center of the bottom of the piston body, a through hole is formed in the center of the piston plate, an upper sealing cover is arranged at the through hole, a through hole is formed in the center of the bottom of the inner cylinder body, a lower sealing cover is arranged at the through hole, when the vent pipe is shielded by the inner cylinder body due to the fact that the telescopic spring is compressed, the upper sealing cover is closed, the lower sealing cover is opened, when the telescopic spring is reset, the upper sealing cover;

the shell of the pen head part is detachably connected with the pen tube.

Preferably, the method comprises the following steps: a gas release valve device is arranged between the shell and the pen tube and comprises a first pipeline and a second pipeline which are vertically arranged, the first pipeline is positioned in the pen tube, the bottom of the first pipeline is flush with the bottom of the pen tube, and the second pipeline is positioned in the shell, the top of the second pipeline is flush with the top of the shell;

a first annular plate is fixed at the bottom of the first pipeline, a first vertical rod is arranged in the first pipeline, a strip-shaped groove is vertically arranged on the side wall of the pen holder corresponding to the first pipeline, a pushing piece is arranged on the outer side of the pen holder, penetrates through the strip-shaped groove to be connected with the first vertical rod, can drive the first vertical rod to move up and down and penetrate through the center of the first annular plate, a second annular plate is fixed on the first vertical rod, and a first spring body is sleeved on the first vertical rod between the first annular plate and the second annular plate;

a third annular plate is fixed at the bottom of the second pipeline, a fourth annular plate is arranged in the second pipeline, a second vertical rod is fixedly connected to the middle of the fourth annular plate, and a second spring body is arranged between the third annular plate and the fourth annular plate;

when the shell is connected with the pen tube, the first vertical rod is opposite to the second vertical rod, and when the pushing piece is pressed downwards, the pushing piece drives the first vertical rod to penetrate through the first annular plate to move downwards, so that the second vertical rod moves downwards; when the pushing sheet is released, the first vertical rod and the second vertical rod are reset under the action of the first spring body and the second spring body respectively;

and when the second vertical rod resets, the traction mechanism pulls the plug to open the air release valve, and when the second vertical rod resets, the traction mechanism pulls the plug to close the air release valve.

Preferably, the method comprises the following steps: the detachable connection is a rotary clamping connection, and specifically comprises: the pen tube bottom is equipped with an annular body, is equipped with the recess that matches with the annular body outer wall in the casing, and the relative both sides of recess inner wall are equipped with the spring ball, and the relative both sides of annular body outer wall are equipped with vertical groove, and vertical groove top extends horizontal groove to one side respectively, and when pen tube and written portion were connected, the annular body was located the recess, and two spring balls can slide to the one end that the vertical groove was kept away from to the horizontal groove along vertical groove respectively.

Preferably, the method comprises the following steps: the wall thickness of the pen tube is reduced from top to bottom.

When the ink is possibly disconnected when the pen core falls down carelessly and the ink is not supplied enough in the subsequent use process, the vacuum pressing device is matched with the air release valve device, so that the gas at the disconnected part of the ink is discharged from the port of the air release valve to enable the ink to be supplied to the pen point continuously, and the pen can be used again.

When bubbles exist in the ink body in the pen tube and ink is not discharged smoothly, the air release valve device is opened, the vacuum pressing device is pressed, the ink body in the pen tube can move downwards, the bubbles in the ink body are squeezed, the ink body is disconnected, and the ink body enters the pen point.

Compared with the prior art, the invention has the advantages that:

(1) a new cartridge design is provided which includes a vacuum press located near the top of the barrel and a purge valve arrangement near the bottom. The vacuum pressing device can realize the function of simply pressing to press the ink body in the pen tube, and the air release valve device can press the ink body in the pen tube into the pen point through simple pressing action after the pen point part is replaced. The two structures can be used independently or in combination, so that the ink can be quickly and completely blended into the pen point, and the pen can be better used.

(2) According to the invention, the pen tube and the pen head part are detachably connected, the pen head part can be replaced if damaged, and the pen can quickly discharge ink by matching with the vacuum pressing device and the air release valve device after replacement, so that the whole pen does not need to be replaced, the replacement rate of the pen core can be reduced, materials are saved, and the pen has an environmental protection significance.

(3) The wall thickness of the pen tube is reduced from top to bottom. The pen can be independently used as a pen or a refill, and is more convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an exploded view of the vacuum pressing apparatus;

FIG. 4 is a view showing a state where the vacuum pressing device is not pressed;

FIG. 5 is a view showing a state where the vacuum pressing device is pressed;

FIG. 6 is a schematic view of a tip structure;

FIG. 7 is an enlarged view of a portion B of FIG. 1;

FIG. 8 is a schematic view of a push tab being pressed;

FIG. 9 is a schematic view of the push sheet not being depressed;

fig. 10 is a schematic view of the arrangement of the spring balls.

In the figure: 1. a pen tube; 2. a pen head portion; 3. an ink body; 4. a housing; 5. a pen point; 6. an inner cylinder; 7. a top cover; 8. a piston body; 9. a piston plate; 10. a tension spring; 11. a breather pipe; 12. an upper closure cap; 13. a lower closure cap; 14. a pneumatic piston; 15. a first conduit; 16. a second conduit; 17. a first annular plate; 18. a second annular plate; 19. a first vertical rod; 20. a push sheet; 21. a first spring body; 22. a third annular plate; 23. a fourth annular plate; 24. a second vertical rod; 25. a second spring body; 26. a plug; 27. a traction mechanism; 28. an annular body; 29. a groove; 30. a spring ball; 31. a vertical slot; 32. a horizontal groove.

Detailed Description

The invention will be further explained with reference to the drawings.

Example 1: referring to fig. 1 to 10, the novel disposable environment-friendly pen core comprises a pen tube 1 and a pen head part 2, wherein an ink body 3 is filled in the pen tube 1, the pen head part 2 comprises a shell 4 and a pen head 5 penetrating out of the bottom of the shell 4, two ends of the pen tube 1 are open, and a vacuum pressing device is arranged at the top of the pen tube;

the vacuum pressing device comprises an inner barrel body 6 with an upper opening, the inner barrel body 6 is positioned in the pen tube 1, the outer wall of the inner barrel body is attached and fixed with the inner wall of the pen container, and the top of the inner barrel body is flush with the top of the pen tube 1;

a pressing body is arranged in the inner cylinder body 6, the pressing body comprises a top cover 7, a piston body 8 and a piston plate 9 which are sequentially connected from top to bottom and coaxially arranged, the diameter of the top cover 7 is larger than the inner diameter of the inner cylinder body 6, the piston body 8 and the piston plate 9 are positioned in the inner cylinder body 6 and are matched with the piston of the inner cylinder body 6, and a telescopic spring 10 is arranged between the piston plate 9 and the bottom of the inner cylinder body 6;

an air vent pipe 11 is arranged in the piston body 8, one end of the air vent pipe 11 is positioned at the top of the side wall of the piston body 8, the other end of the air vent pipe 11 is positioned at the center of the bottom of the piston body 8, a through hole is formed in the center of the piston plate 9, an upper closing cover 12 is arranged at the through hole, a through hole is also formed in the center of the bottom of the inner cylinder body 6, a lower closing cover 13 is arranged at the through hole, when the air vent pipe 11 is shielded by the inner cylinder body 6 due to the compression of the telescopic spring 10, the upper closing cover 12 is closed, the lower closing cover 13 is opened, when the telescopic spring 10 is reset, the upper closing cover 12 is opened, the lower closing cover 13;

the shell 4 of the pen head part 2 is detachably connected with the pen tube 1.

A gas release valve device is arranged between the shell 4 and the pen tube 1 and comprises a first pipeline 15 and a second pipeline 16 which are vertically arranged, the first pipeline 15 is positioned in the pen tube 1, the bottom of the first pipeline is flush with the bottom of the pen tube 1, and the second pipeline 16 is positioned in the shell 4, the top of the second pipeline is flush with the top of the shell 4;

a first annular plate 17 is fixed at the bottom of the first pipeline 15, a first vertical rod 19 is arranged in the first pipeline 15, a strip-shaped groove is vertically arranged on the side wall of the pen tube 1 corresponding to the first pipeline 15, a pushing piece 20 is arranged on the outer side of the pen tube 1, the pushing piece 20 penetrates through the strip-shaped groove to be connected with the first vertical rod 19 and can drive the first vertical rod 19 to move up and down and penetrate through the center of the first annular plate 17, a second annular plate 18 is fixed on the first vertical rod 19, and a first spring body 21 is sleeved on the first vertical rod 19 between the first annular plate 17 and the second annular plate 18;

a third annular plate 22 is fixed at the bottom of the second pipeline 16, a fourth annular plate 23 is arranged in the second pipeline 16, a second vertical rod 24 is fixedly connected to the middle of the fourth annular plate 23, and a second spring body 25 is arranged between the third annular plate 22 and the fourth annular plate 23;

when the shell 4 is connected with the pen tube 1, the first vertical rod 19 is opposite to the second vertical rod 24, and when the pushing piece 20 is pressed downwards, the pushing piece 20 drives the first vertical rod 19 to pass through the first annular plate 17 to move downwards, so that the second vertical rod 24 moves downwards; when the pushing sheet 20 is released, the first vertical rod 19 and the second vertical rod 24 are reset under the action of the first spring body 21 and the second spring body 25 respectively;

and a deflation valve is arranged on one side of the pen point 5, a plug 26 is arranged on the deflation valve, a traction mechanism 27 is arranged between the plug 26 and the second vertical rod 24, when the second vertical rod 24 moves downwards, the traction mechanism 27 pulls the plug 26 to open the deflation valve, and when the second vertical rod 24 resets, the traction mechanism 27 pulls the plug 26 to close the deflation valve.

Example 2: referring to fig. 1-10, the detachable connection is a rotary snap, specifically: the bottom of the pen tube 1 is provided with a ring body 28, a groove 29 matched with the outer wall of the ring body 28 is formed in the shell 4, spring balls 30 are arranged on two opposite sides of the inner wall of the groove 29, vertical grooves 31 are formed in two opposite sides of the outer wall of the ring body 28, the top of each vertical groove 31 extends to one side to form a horizontal groove 32, when the pen tube 1 is connected with the pen head 2, the ring body 28 is located in the groove 29, and the two spring balls 30 can slide to one end, away from the vertical groove 31, of the horizontal groove 32 along the vertical groove 31 respectively. The wall thickness of the pen tube 1 is reduced from top to bottom. The rest is the same as in example 1.

The structure of the vacuum pressing device is specifically analyzed as follows:

with respect to the inner cylinder 6: the inner cylinder 6 is fixed at the top in the pen tube 1, and the position of the inner cylinder cannot be changed along with the pressing action. Because the outer wall of the inner barrel body 6 is attached and fixed with the inner wall of the pen container, the space at the upper end and the lower end of the inner barrel body 6 is not communicated actually and is separated by the inner barrel body 6. The center of the bottom of the inner cylinder body 6 is provided with a through hole, and the through hole is provided with a lower sealing cover 13, so when the lower sealing cover 13 is opened, the spaces at the upper end and the lower end are communicated, and when the lower sealing cover 13 is closed, the spaces at the upper end and the lower end are not communicated.

Regarding the pressing body:

(1) the inner cylinder 6 is internally provided with a pressing body which is matched with the inner cylinder 6 by a piston, so that the inner cylinder 6 can move up and down, can be pressed down by external force and can reset under the rebound force of the telescopic spring 10 when no external force is applied.

(2) Structurally: the pressing body comprises a top cover 7, a piston body 8 and a piston plate 9 which are sequentially connected from top to bottom and coaxially arranged, and the piston body 8 and the piston plate 9 are positioned in the inner cylinder body 6 and are matched with the piston of the inner cylinder body 6, so that in practice, the inner cylinder body 6 is also divided into an upper space and a lower space which are not communicated by the piston body 8 and the piston plate 9, and the upper space and the lower space of the inner cylinder body 6 are not communicated because the vent pipe 11 is arranged in the piston body 8 and the bottom of the piston plate 9 is provided with a through hole and an upper sealing cover 12, so when the upper sealing cover 12 is opened, the upper space and the lower space of the inner cylinder body 6 are communicated, and.

With respect to the breather pipe 11: the vent pipe 11 is designed specifically with one end at the top of the side wall of the piston body 8 and one end at the center of the bottom of the piston body 8, and its purpose is to cooperate with the upper and lower closing caps 12, 13 to generate the pressure for controlling the pneumatic piston 14.

With regard to the cooperation of the vent tube 11 with the upper and lower closure caps 12 and 13:

(1) when the pressing body of the present invention is not pressed, the extension spring 10 is in a relaxed state, and the top end of the ventilation tube 11 is not located in the inner cylinder 6 but exposed to the outside air. In the present invention, since the upper sealing cover 12 is opened and the lower sealing cover 13 is closed when the extension spring 10 is in a reset state, that is, in a relaxed state, the space between the upper sealing cover 12 and the lower sealing cover 13 is communicated with the outside through the vent pipe 11, and a section of air exists between the upper sealing cover 12 and the lower sealing cover 13. The space between the upper and lower closures 12 and 13 is referred to as a transition space.

(2) Pressing extension spring 10, the interior gas pressure grow of transition space, gaseous top makes upper seal cover 12 lid closed, and the transition space is isolated with the external air this moment, and the external air can't get into transition space through breather pipe 11.

On the premise that the transition space is closed, the extension spring 10 is compressed, the transition space is reduced, the air pressure pushes downwards, the lower closing cover 13 is opened, air enters the pen tube 1, and the air pressure piston 14 is pushed to move downwards.

(3) After the operation is finished, the vacuum pressing device is not pressed any more, the vacuum pressing device rebounds, the upper sealing cover 12 is opened, the transition space is communicated with the outside through the vent pipe 11, meanwhile, the gas in the pen tube 1 is not input any more, and the gas pressure rebounds to drive the lower sealing cover 13 to be closed, so that the state (1) is returned.

With respect to the pneumatic piston 14: in the pen tube 1 between the inner cylinder 6 and the top of the ink body 3, the space at the upper end and the lower end of the air pressure piston 14 is not communicated, so when the upper part pushes the air pressure piston, the air pressure piston can move downwards to push the ink body 3 to move downwards, thereby extruding air bubbles in the ink body 3 or enabling the ink body 3 to enter the pen head part 2 below.

The working process of the vacuum pressing device comprises the following steps:

(1) pressing the pressing body downwards, matching all parts in the vacuum pressing device, closing the vacuum pressing device by combining the upper closing cover 12, and opening the lower closing cover 13 to enable gas to enter the pen tube 1 and enable the ink body 3 to move downwards for a certain distance;

(2) the pressing body is released, at the moment, the upper sealing cover 12 is opened, the lower sealing cover 13 is closed, and all parts in the vacuum pressing device are reset; if the ink body 3 does not move down enough, the step (1) is repeated.

The purpose of the air release valve device is:

(1) when the ink is cut off in the pen tube 1 after the pen core falls to the ground carelessly, and the ink is not supplied enough in the subsequent use process, the ink can be supplied to the pen point 5 continuously by being matched with a vent valve device to ensure that the gas of the cut-off part of the ink body 3 is discharged from the port of the vent valve so as to recover the use.

(2) According to the replaceable pen head part 2, after the pen head part 2 is damaged and replaced, because air pressure exists in a new pen head part 2 and cannot be communicated with the ink body 3 in the pen tube 1, the air pressure in the pen head part 2 needs to be released by matching with an air release valve device and a vacuum pressing device, and the ink body 3 in the pen tube 1 is pressed into the pen head part 2, so that the replaceable pen head part is recovered to be used.

With regard to the detachable connection: the pen head part 2 and the pen tube 1 are detachably connected, so the pen head part 2 can be replaced. The vertical groove 31 and the horizontal groove 32 are used for positioning, and when the spring ball 30 slides in place, the first pipeline 15 and the second pipeline 16 are just opposite.

Regarding the internal structure of the first duct 15: the first vertical rod 19 can move up and down along the strip-shaped groove under the action of the pushing piece 20, the first annular plate 17 is fixed at the bottom of the first pipeline 15, and the second annular plate 18 is fixedly connected with the first vertical rod 19, so that the first annular plate 17 is not moved when the pushing piece moves up and down, the second annular plate 18 moves up and down along with the first vertical rod 19, and the first vertical rod 19 can penetrate through the first annular plate 17 to touch the second vertical rod 24 below. The first spring body 21 is intended to bring the first vertical rod 19 to move up and return automatically.

Regarding the internal structure of the second duct 16: similarly, the third annular plate 22 is stationary, and when the first vertical rod 19 moves downward, the third annular plate passes through the first annular plate 17 to touch the second vertical rod 24 below, so that the second vertical rod 24 moves downward, and the traction mechanism 27 is driven to move, so as to open the plug 26, release the air pressure in the pen point 5, and move the ink body 3 downward into the pen point 5. The second spring body 25 is used to drive the second vertical rod 24 to move upwards and return automatically without external force, and simultaneously close the plug 26.

The vacuum pressing device and the air release valve device are matched for use, so that the ink body 3 can be quickly and completely fused into the pen point 5, and the ink pen is better used.

When the pen point 5 is broken in the using process and the normal use cannot be carried out due to the problem, the pen head part 2 can be directly replaced, and one pen tube 1 can be matched with 2-3 pen point parts 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.