CN209971968U - Coreless pen capable of circularly injecting water and water injection device - Google Patents

Abstract

The utility model belongs to the technical field of stationery processing is made, concretely relates to coreless pen and water injection device of circulated water injection, the major structure includes: the pen comprises a pen holder, a water storage cavity, a pen point, a sealing cap, a pen holder groove, an anti-slip sheath, a round hole, a fixing bulge, a one-way valve, an upper groove, a lower groove, a side wall groove, an ink bottle, a bottle cap, a connecting rod, a water injection head, a transparent silicone tube and an adjusting switch; the pen refill has the advantages that the main body structure is simple and reasonable, the design concept is ingenious, the pen refill does not need to be replaced, resources are not wasted, the environment is not polluted, the use is safe and reliable, the water injection is quick and convenient, the cleaning is not needed after the water injection, the water storage capacity is large, the service life is long, the appearance is attractive, the maintenance cost and the production cost are effectively reduced, the application effect is friendly, and the market prospect is wide.

Description

Coreless pen capable of circularly injecting water and water injection device

The technical field is as follows:

the utility model belongs to the technical field of stationery processing is made, concretely relates to coreless pen and water injection device of circulated water injection.

Background art:

the pen is a widely used writing tool, the existing writing instruments such as sign pens, gel pens and ball pens are composed of a refill and a pen shell, because the water storage amount of the refill is small, one refill is used up quickly, the refill is disposable, and because water cannot be added, the refill needs to be replaced with a new refill after the water in the refill is used up, the waste of the refill causes resource waste on one hand, and on the other hand, the total amount of solid waste is increased, so that the environment is polluted; the existing pen mainly comprises a pen head, a pen point and a water storage pen container, although the pen is not disposable, a leather bag for containing ink is small in water storage capacity, the elasticity of the pen container is insufficient, so that water absorption is insufficient, the pen is short in service time for people with large writing quantity, frequent ink absorption is inconvenient, the pen point is easily polluted by the ink when ink absorption is carried out, the pen point is frequently cleaned when a user finishes absorbing the ink, and the leather bag is long in service time and easy to age and damage; chinese patent 200420051987.1 discloses a fountain pen, which is characterized in that a pen tube hole and a fountain hole which are communicated with a cavity are respectively arranged at the center of the front end and the rear end of a pen body provided with the cavity, a pen point communicated with the pen tube hole is screwed at the front part of the pen body, a plug is arranged at the hole of the fountain hole, a thin pen tube with two ends respectively communicated with a pen point and the cavity is arranged in the pen tube hole at the center of the pen point, the pen body at the cavity part of the pen is a transparent body, when the fountain pen is filled with ink, a soft fountain bottle with a tip which can be inserted into the fountain hole at the mouth part is used for sucking the ink firstly, then the ink is squeezed into the cavity of the pen from the fountain hole at the tail part of the pen tube, and the plug is tightly used, so that the ink can not flow out from the rear part of the pen, and the ink flows; chinese patent 200520084075.9 discloses a coreless fountain pen, which comprises a pen container, wherein one end of the pen container is connected with a pen point, a pen point and an air pipe are arranged in the pen point, an inner cylinder with one closed end and an opening at the other end is arranged in an inner cavity of the pen container, threads are arranged on a cylindrical surface of the inner cylinder and are in connection fit with the threads at the end part of the pen container, a piston is also arranged on the inner cylinder and is matched with the inner cavity of the pen container, and a spring is arranged in the pen; chinese patent 200920300571.1 discloses a coreless gel ink pen, which comprises a pen holder, a sealing cover, a pen point and a pen cap, wherein the pen holder is provided with no refill, the sealing cover at the tail end of the pen holder is provided with a vent hole, a liquid leakage preventing vent pipe is arranged in the sealing cover, one end of the pen point is provided with no vent gap, and all parts are matched and hermetically connected; chinese patent 201310482271.0 discloses a coreless pen, which comprises a pen holder, wherein the pen holder is provided with a cavity for storing ink, the tail end of the pen holder is provided with a pen cap with an air vent, the front end of the pen holder is a pen point using the ink, the front end of the pen holder is provided with a rubber ring near the pen point, the outer surface of the pen holder is a multi-prismatic surface, and the pen cap is in threaded connection with the pen holder; chinese patent 201220349110.5 discloses a water-based refill capable of filling water, which comprises a nib, a connector and a pen tube, wherein the connector comprises a sleeve sleeved at the end of the nib and a plug inserted into the pen tube, a baffle is arranged between the sleeve and the plug corresponding to the pen tube, a check valve is arranged on the pen tube and comprises a shell, an injection cavity is arranged at the upper part in the shell, an output cavity is arranged at the lower part in the shell, a baffle plate with a guide hole is arranged between the injection cavity and the output cavity in the shell, the diameter of the guide hole is smaller than that of the output cavity and the injection cavity, a guide rod with a truncated cone-shaped plug at the upper end is arranged in the output cavity, a reset spring is arranged outside the guide rod, one end with a, the diameter of the end with the smaller diameter of the truncated cone-shaped plug is smaller than that of the guide hole, the diameter of the end with the larger diameter of the truncated cone-shaped plug is larger than that of the guide hole, and the baffle is provided with a positioning notch; chinese patent 200720107345.2 discloses a water-storing writing pen with a water filling device, wherein two ends of a hollow pen holder are connected with a hollow pen cap and a pen neck with a pen point inserted therein through sealing rings, the pen point comprises a writing point, a hard pen point and a pen point, which are communicated with the lower end of the hollow pen holder through a water conduit, a water storage layer and a water guide strip groove are arranged on the concave surface of the hard pen point, an air hole is arranged at the bottom of the hollow pen cap, a spring and a conical head are arranged above the latter, a conical hole matched with the conical head is arranged at the center of a screw plug connected with the top end of the hollow pen cap in a positioning manner, and the pen sleeve is sleeved at one end of the hollow pen holder with the pen point; a water injection device matched with a water storage writing pen with a water injection device comprises a hollow bottle cap which is in sealing positioning connection with the top end of an ink bottle, and a spring and a hollow plunger which are arranged in the inner cavity of the hollow bottle cap, wherein the hollow plunger penetrates through a cap which is in positioning connection with the top end of the hollow bottle cap and is fixedly connected with a hollow handle, the outlet end of the latter is sleeved with a water injection pipe, and the bottom of the hollow bottle cap is provided with a water suction pipe which is inserted into the ink bottle; although the problem of replacing the pen core can be solved by injecting water, the related patent products still have the problems of complex structure, easy damage and easy water leakage, the water injection is inconvenient, the cleaning is required after the water injection, and the maintenance and production cost is high; therefore, the coreless pen and the water injection device which are simple and reasonable in structure, safe and reliable in water leakage during use, convenient in water injection and capable of injecting water circularly do not need to be replaced, resources and environment pollution are not wasted, water injection is rapid and convenient, cleaning is not needed after water injection, maintenance and production cost are low, water storage capacity is large, service life is long, and the coreless pen and the water injection device have good use value and popularization prospect.

The utility model has the following contents:

the utility model aims to overcome the not enough and defect that prior art exists, seek the design and provide a simple structure reasonable, use safe and reliable that can not leak, but the centreless pen and the water injection device of the convenient circulated water injection of water injection, it need not change the refill, resource and polluted environment are not wasted, and the water injection is convenient fast, need not the clearance behind the water injection, maintains and low in production cost, and the water storage capacity is big, long service life.

In order to achieve the above object, the main structure of the present invention comprises: the pen comprises a pen holder, a water storage cavity, a pen point, a sealing cap, a pen holder groove, an anti-slip sheath, a round hole, a fixing bulge, a one-way valve, an upper groove, a lower groove, a side wall groove, an ink bottle, a bottle cap, a connecting rod, a water injection head, a transparent silicone tube and an adjusting switch; the pen holder is of a cylindrical structure with an upper opening and a lower opening, the top end of the pen holder is provided with a sealing cap, the sealing cap is of a cylindrical structure with one end being open and the other end being closed, and the open end of the sealing cap is in threaded sealing connection with the top end of the pen holder; the pen comprises a pen holder, a pen point, a pen head and a pen head, wherein the pen holder is provided with a conical pen point with an upper opening and a lower opening at the bottom end; the sealing cap, the pen holder, the pen point and the pen point are communicated with each other, and a closed water storage cavity is formed after the sealing cap, the pen holder, the pen point and the pen point are combined; the bottom end of the pen holder is annularly provided with a pen holder groove close to the pen point, and the depth dimension of the pen holder groove is less than half of the wall thickness dimension of the pen holder, so that the firmness of the pen holder can be effectively ensured; an anti-slip sheath is arranged in the pen holder groove, the anti-slip sheath is detachably sleeved in the pen holder groove, and the thickness dimension of the anti-slip sheath corresponds to the depth dimension of the pen holder groove; a round hole penetrating through the single-layer outer wall of the pen holder is formed in the bottom end of the pen holder in the pen holder groove, and the round hole can be completely wrapped by the anti-skidding sheath; the one-way valve is arranged in the round hole, the one-way valve is cylindrical, the diameter of the one-way valve corresponds to that of the round hole, the thickness of the one-way valve corresponds to that of the wall of the pen holder at the position of the groove of the pen holder, the top surface of the one-way valve is provided with an upper groove which is sunken downwards, the bottom surface of the one-way valve is provided with a lower groove which is sunken upwards, the upper groove and the lower groove are vertically symmetrical along the horizontal central axis of the one-way valve, and the side wall of the one-way valve is annularly; a fixing bulge is annularly arranged between the one-way valve and the penholder, one side wall of the fixing bulge is fixedly connected with the inner wall of the penholder provided with the round hole, and the other side walls of the fixing bulge are attached to the side wall groove; an ink bottle is arranged outside the pen holder, and scale marks are arranged on the outer wall of the ink bottle to realize the indication of the water injection amount; the top end of the ink bottle is provided with a bottle cap which is in threaded sealing connection with the top end of the ink bottle; a cylindrical connecting rod penetrating through the bottle cap is arranged on the top surface of the bottle cap along the central axis vertical to the bottle cap, and the bottom end of the connecting rod is vertically and fixedly connected with the top surface of the bottle cap; the connecting rod is provided with a transparent silicone tube, the bottom end of the transparent silicone tube is connected with the top end of the connecting rod in a detachable sealing manner, and the transparent silicone tube is also provided with an adjusting switch capable of moving up and down along the transparent silicone tube; the transparent silicone tube is provided with a water injection head with an opening at the top end, and the bottom end of the water injection head is connected with the top end of the transparent silicone tube in a detachable sealing manner; the ink bottle, the connecting rod, the transparent silica gel tube and the water injection head are communicated with each other.

The utility model relates to a sealing cap diameter size is corresponding with the diameter size of pen-holder, can the dismouting between sealing cap and the pen-holder, unpacks apart the back and can realize the quick washing maintenance in water storage chamber.

The utility model relates to a pen-holder recess length is 3 ~ 4cm, and the length dimension of anti-skidding sheath is corresponding with pen-holder recess length dimension.

The utility model relates to an antiskid sheath is made for soft rubber materials, can increase the comfort level of holding a pen to non-skid realizes the smoothness of centreless pen and writes.

The utility model relates to a check valve is a butyl rubber plug, a side wall groove of the check valve is triangular, semicircular or trapezoidal, the shape and the size of a fixing bulge correspond to the check valve, and the fixing bulge can be matched with the side wall groove to realize the fixation of the check valve; the sum of the depth dimension of the upper groove and the depth dimension of the lower groove is larger than one third of the thickness dimension of the one-way valve and smaller than two thirds of the thickness dimension of the one-way valve, and the water injection head can penetrate through the one-way valve quickly to be inserted into the water storage cavity during water injection.

The utility model relates to an ink bottle makes for the yielding soft materials that can atress extrusion deformation, realizes impressing the ink in the ink bottle in the water storage cavity through the extrusion to the ink bottle.

The utility model relates to a water filling head is a refill without a steel ball at the top end, thereby realizing the recycling of the refill, reducing the resource waste and the environmental pollution; the length of water injection head is greater than the thickness of check valve, can realize that the water injection head runs through the check valve and extends to the water storage intracavity when the water injection.

The novel regulating switch is a regulator on the medical infusion tube, so that the ink is prevented from drying up in the ordinary state, and the regulation and control of the water injection amount and the water injection speed in the water injection state are realized.

The utility model relates to a coreless pen capable of circularly injecting water and a water injection device, when in use, a sealing cap, a penholder with an anti-slip sheath and a pen point with a pen point are firstly assembled to complete the assembly of the coreless pen, then a proper amount of ink is added into an ink bottle according to the scale indication on the ink bottle, a bottle cap with a connecting rod, a transparent silica gel tube with an adjusting switch and a water injection head are assembled to complete the assembly of the water injection device, the anti-slip sheath in a penholder groove is pushed open until a check valve in the penholder groove is completely exposed, the assembled water injection head is inserted into a water storage cavity along the check valve, the ink bottle is inverted and extruded, the adjusting switch on the transparent silica gel tube is adjusted while the ink bottle is extruded, the ink in the ink bottle is injected into the water storage cavity through the connecting rod, the transparent silica gel tube and the water injection head in sequence, the injection head is pulled out after the water, the coreless pen after being filled with the ink can carry out normal writing, and the ink is circularly filled by the water filling device after the ink in the water storage cavity is used up.

Compared with the prior art, the utility model, its major structure is simple reasonable, and the design concept is ingenious, can realize not needing to change the refill, and resources and polluted environment are not wasted, uses safe and reliable that can not leak, and the water injection is convenient fast, need not the clearance behind the water injection, and the water storage capacity is big, long service life, and the appearance is pleasing to the eye, effectively reduces maintenance cost and manufacturing cost, and the application effect is friendly, and market prospect is wide.

Description of the drawings:

fig. 1 is a schematic diagram of the principal structure of the coreless pen of the present invention.

Fig. 2 is the schematic diagram of the main structure principle of the check valve of the present invention.

Fig. 3 is a schematic view of the principle of the main structure of the check valve and the fixing protrusion.

Fig. 4 is a schematic view of the main structure of the water injection device of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following examples and accompanying drawings.

Example 1:

as shown in the figure, the main structure of the present embodiment includes: the pen comprises a pen holder 1, a water storage cavity 2, a pen point 3, a pen point 4, a sealing cap 5, a pen holder groove 6, an anti-skidding sheath 7, a round hole 8, a fixing protrusion 9, a one-way valve 10, an upper groove 11, a lower groove 12, a side wall groove 13, an ink bottle 14, a bottle cap 15, a connecting rod 16, a water injection head 17, a transparent silicone tube 18 and an adjusting switch 19; the pen holder 1 is of a cylindrical structure with an upper opening and a lower opening, the top end of the pen holder 1 is provided with a sealing cap 5, the sealing cap 5 is of a cylindrical structure with one open end and the other closed end, and the open end of the sealing cap 5 is in threaded sealing connection with the top end of the pen holder 1; the bottom end of the pen holder 1 is provided with a conical pen point 3 with an upper opening and a lower opening, the large end of the pen point 3 is fixedly connected with the bottom end of the pen holder 1 in a sealing manner or in a threaded sealing manner, the small end of the pen point 3 is provided with a pen point 4, and the top end of the pen point 4 is fixedly connected with the small end of the pen point 3 in a sealing manner; the sealing cap 5, the pen holder 1, the pen point 3 and the pen point 4 are communicated with each other, and the sealing cap 5, the pen holder 1, the pen point 3 and the pen point 4 are combined to form a closed water storage cavity 2; a penholder groove 6 is annularly formed in the bottom end of the penholder 1 close to the pen point 3, the depth of the penholder groove 6 is less than half of the wall thickness of the penholder 1, and the firmness of the penholder 1 can be effectively guaranteed; an anti-skid sheath 7 is arranged in the pen holder groove 6, the anti-skid sheath 7 is detachably sleeved in the pen holder groove 6, and the thickness dimension of the anti-skid sheath 7 corresponds to the depth dimension of the pen holder groove 6; a round hole 8 penetrating through the single-layer outer wall of the pen holder 1 is formed in the bottom end of the pen holder 1 in the pen holder groove 6, and the round hole 8 can be completely wrapped by the anti-skidding sheath 7; a one-way valve 10 is arranged in the round hole 8, the one-way valve 10 is cylindrical, the diameter of the one-way valve 10 corresponds to that of the round hole 8, the thickness of the one-way valve 10 corresponds to that of the wall thickness of the penholder 1 at the position of the penholder groove 6, an upper groove 11 which is recessed downwards is arranged on the top surface of the one-way valve 10, an upper groove 12 which is recessed upwards is arranged on the bottom surface of the one-way valve 10, the upper groove 11 and the lower groove 12 are symmetrical up and down along the horizontal central axis of the one-way valve 10, and an inner recessed side wall groove 13 is annularly arranged; a fixing bulge 9 is annularly arranged between the one-way valve 10 and the penholder 1, one side wall of the fixing bulge 9 is fixedly connected with the inner wall of the penholder 1 provided with the round hole 8, and the other side walls of the fixing bulge 9 are attached to the side wall groove 13; an ink bottle 14 is arranged outside the penholder 1, and scale marks are arranged on the outer wall of the ink bottle 14 to realize the indication of the water injection amount; the top end of the ink bottle 14 is provided with a bottle cap 15, and the bottle cap 15 is in threaded sealing connection with the top end of the ink bottle 14; a cylindrical connecting rod 16 penetrating through the bottle cap 15 is arranged on the top surface of the bottle cap 15 along the central axis vertical to the bottle cap 15, and the bottom end of the connecting rod 16 is vertically and fixedly connected with the top surface of the bottle cap 15; a transparent silicone tube 18 is arranged on the connecting rod 16, the bottom end of the transparent silicone tube 18 is connected with the top end of the connecting rod 16 in a detachable sealing manner, and an adjusting switch 19 capable of moving up and down along the transparent silicone tube 18 is also arranged on the transparent silicone tube 18; the transparent silicone tube 18 is provided with a water injection head 17 with an opening at the top end, and the bottom end of the water injection head 17 is connected with the top end of the transparent silicone tube 18 in a detachable sealing way; the ink bottle 14, the connecting rod 16, the transparent silicone tube 18 and the water filling head 17 are all communicated with each other.

The diameter size of the sealing cap 5 related to the embodiment corresponds to the diameter size of the pen holder 1, the sealing cap 5 and the pen holder 1 can be disassembled and assembled, and the water storage cavity 2 can be quickly cleaned and maintained after being disassembled.

The length of the penholder groove 6 related to the embodiment is 3-4 cm, and the length of the anti-skidding sheath 7 corresponds to that of the penholder groove 6.

The antiskid sheath 7 that this embodiment relates to is made for soft rubber materials, can increase the comfort level of holding the pen to the smooth writing of centreless pen is realized to the difficult slip.

The check valve 10 related to the embodiment is a butyl rubber plug, the side wall groove 13 of the check valve 10 is triangular, semicircular or trapezoidal, the shape and the size of the fixing protrusion 9 correspond to those of the check valve 10, and the fixing protrusion 9 can be matched with the side wall groove 13 to fix the check valve 10; the sum of the depth dimension of the upper groove 11 and the depth dimension of the lower groove 12 is larger than one third of the thickness dimension of the check valve 10 and smaller than two thirds of the thickness dimension of the check valve 10, so that the water injection head 17 can quickly penetrate through the check valve 10 and be inserted into the water storage cavity 2 during water injection.

The ink bottle 14 according to the present embodiment is made of a soft material that can be deformed by being pressed, and the ink in the ink bottle 14 is pressed into the water storage chamber 2 by pressing the ink bottle 14.

The water filling head 17 related to the embodiment is a refill without a steel ball at the top end, so that the waste refill is recycled, the resource waste is reduced, and the environmental pollution is reduced; the length of water injection head 17 is greater than the thickness of check valve 10, can realize that water injection head 17 runs through check valve 10 and extends to in the water storage chamber 2 when the water injection.

The novel regulating switch 19 is a regulator on the medical infusion tube, so that the ink is prevented from drying up in the ordinary state, and the regulation and control of the water injection amount and the water injection speed in the water injection state are realized.

When the coreless pen and the water injection device capable of circularly injecting water are used, firstly, the sealing cap 5, the penholder 1 with the anti-slip sheath 7 and the pen point 3 with the pen point 4 are assembled to complete the assembly of the coreless pen, then a proper amount of ink is added into the ink bottle 14 according to the scale indication on the ink bottle 14, the bottle cap 15 with the connecting rod 16, the transparent silicone tube 18 with the regulating switch 19 and the water injection head 17 are assembled to complete the assembly of the water injection device, the anti-slip sheath 7 in the penholder groove 6 is pushed open until the check valve 10 in the penholder groove 6 is completely exposed, the assembled water injection head 17 is inserted into the water storage cavity 2 along the check valve 10, the ink bottle 14 is inverted and extruded, the regulating switch 19 on the transparent silicone tube 18 is regulated while the bottle 14 is extruded, the ink in the ink bottle 14 is injected into the water storage cavity 2 sequentially through the connecting rod 16, the transparent silicone tube 18 and the water injection head 17, after the water injection is finished, the water injection head 17 is pulled out, the anti-slip sheath 7 is pushed back into the penholder groove 6, the coreless pen after the water injection can write normally, and the water injection device is used for circularly injecting water after the ink in the water storage cavity 2 is used up.

The coreless pen and the water injection device capable of circularly injecting water can realize that the refill does not need to be replaced, have large water storage capacity, long service life and convenient maintenance, can save 100 hundred million-150 hundred million refills every year, are quick and convenient for water injection of the water injection device, do not need to clean the surface after water injection, are safe and reliable without water leakage in use, effectively save resources by recycling the abandoned refills, reduce the pollution environment and effectively reduce the maintenance cost and the production cost.

Claims (2)

1. The utility model provides a coreless pen and water injection device of circulated water injection which characterized in that: the main structure includes: the pen comprises a pen holder, a water storage cavity, a pen point, a sealing cap, a pen holder groove, an anti-slip sheath, a round hole, a fixing bulge, a one-way valve, an upper groove, a lower groove, a side wall groove, an ink bottle, a bottle cap, a connecting rod, a water injection head, a transparent silicone tube and an adjusting switch; the pen holder is of a cylindrical structure with an upper opening and a lower opening, the top end of the pen holder is provided with a sealing cap, the sealing cap is of a cylindrical structure with one end being open and the other end being closed, and the open end of the sealing cap is in threaded sealing connection with the top end of the pen holder; the pen comprises a pen holder, a pen point, a pen head and a pen head, wherein the pen holder is provided with a conical pen point with an upper opening and a lower opening at the bottom end; the sealing cap, the pen holder, the pen point and the pen point are communicated with each other, and a closed water storage cavity is formed after the sealing cap, the pen holder, the pen point and the pen point are combined; a penholder groove is annularly formed at the bottom end of the penholder close to the pen point, and the depth dimension of the penholder groove is less than half of the wall thickness dimension of the penholder; an anti-slip sheath is arranged in the pen holder groove, the anti-slip sheath is detachably sleeved in the pen holder groove, and the thickness dimension of the anti-slip sheath corresponds to the depth dimension of the pen holder groove; a round hole penetrating through the single-layer outer wall of the pen holder is formed in the bottom end of the pen holder in the pen holder groove, and the round hole can be completely wrapped by the anti-skidding sheath; the one-way valve is arranged in the round hole, the one-way valve is cylindrical, the diameter of the one-way valve corresponds to that of the round hole, the thickness of the one-way valve corresponds to that of the wall of the pen holder at the position of the groove of the pen holder, the top surface of the one-way valve is provided with an upper groove which is sunken downwards, the bottom surface of the one-way valve is provided with a lower groove which is sunken upwards, the upper groove and the lower groove are vertically symmetrical along the horizontal central axis of the one-way valve, and the side wall of the one-way valve is annularly; a fixing bulge is annularly arranged between the one-way valve and the penholder, one side wall of the fixing bulge is fixedly connected with the inner wall of the penholder provided with the round hole, and the other side walls of the fixing bulge are attached to the side wall groove; an ink bottle is arranged outside the pen holder, and scale marks are arranged on the outer wall of the ink bottle to realize the indication of the water injection amount; the top end of the ink bottle is provided with a bottle cap which is in threaded sealing connection with the top end of the ink bottle; a cylindrical connecting rod penetrating through the bottle cap is arranged on the top surface of the bottle cap along the central axis vertical to the bottle cap, and the bottom end of the connecting rod is vertically and fixedly connected with the top surface of the bottle cap; the connecting rod is provided with a transparent silicone tube, the bottom end of the transparent silicone tube is connected with the top end of the connecting rod in a detachable sealing manner, and the transparent silicone tube is also provided with an adjusting switch capable of moving up and down along the transparent silicone tube; the transparent silicone tube is provided with a water injection head with an opening at the top end, and the bottom end of the water injection head is connected with the top end of the transparent silicone tube in a detachable sealing manner; the ink bottle, the connecting rod, the transparent silica gel tube and the water injection head are communicated with each other.

2. The coreless refill and refill device for refilling of claim 1, wherein the diameter of the cap corresponds to the diameter of the pen shaft, and the cap is detachably connected to the pen shaft; the length of the related pen holder groove is 3-4 cm, and the length size of the anti-skidding sheath corresponds to the length size of the pen holder groove; the related anti-skid sheath is made of soft rubber material; the related one-way valve is a butyl rubber plug, a side wall groove of the one-way valve is triangular or semicircular or trapezoidal, the shape and the size of a fixing bulge correspond to the one-way valve, the fixing bulge can be matched with the side wall groove to realize the fixing of the one-way valve, and the sum of the depth size of the upper groove and the depth size of the lower groove is more than one third of the thickness size of the one-way valve and less than two thirds of the thickness size of the one-way valve; the related ink bottle is made of soft materials which can be extruded and deformed under stress; the related water injection head is a refill without a steel ball at the top end; the length of the water injection head is greater than the thickness of the one-way valve; the related regulating switch is a regulator on the medical transfusion tube.

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