CN211868990U

CN211868990U - Ball-point pen refill

Info

Publication number: CN211868990U
Application number: CN202020016314.1U
Authority: CN
Inventors: 谢晏清; 宋晓蕾
Original assignee: Minjiang University
Current assignee: Minjiang University
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-11-06
Anticipated expiration: 2030-01-06

Abstract

The utility model provides a ball-point pen refill, which relates to the technical field of ball-point pens and comprises a pen head, a first pen tube, a second pen tube, a fixing mechanism and an adjusting mechanism; the fixing mechanism is used for fixing the second pen tube in the first pen tube, and a silicon oil layer used for blocking ink is arranged at one end, far away from the pen point, of the first pen tube; the second pen tube is used for conveying ink between the pen point in the first pen tube and the silicon oil layer, when the ink is conveyed into the first pen tube through the second pen tube, the sealing effect of the silicon oil layer cannot be damaged, the technical problems that a large amount of resources are wasted due to the fact that a cylindrical pen core is a disposable product in the prior art, and when the ink is injected into the cylindrical pen core, the internal structure of the cylindrical pen core is damaged, the cylindrical pen core cannot be used, and the ink is wasted are solved; the adjusting mechanism is used for adjusting the communication or the closing between the first pen tube and the pen point; guaranteed not to have ink to spill over from the clearance between nib and the ball when injecting ink into first pen pipe for the design is more reasonable.

Description

Ball-point pen refill

Technical Field

The utility model belongs to the technical field of the ballpoint pen technique and specifically relates to a ballpoint pen refill is related to.

Background

With the rapid development of scientific technology, manufacturing level and new materials in our country, ball-point pens and ball-point pen refills have become representative products for disposable use. At present, the annual output of ball-point pens in China is 400 hundred million, the export and the stock are removed, the annual average consumption of the ball-point pens reaches more than 45 hundred million, the pen points of ball-point pen refills are mostly made of stainless steel or copper, proper pen points are selected according to the properties of ink, the pen core tubes are mostly made of plastic materials, and the great consumption causes the waste of a great amount of national resources.

Although there is also the ball-point pen refill that can add printing ink among the prior art, because the cylinder refill is provided with the silicon oil layer in refill inside, the process of annotating printing ink in the prior art need insert to carry out the printing ink and add in the silicon oil layer, leads to the cylinder refill silicon oil layer after adding printing ink to be destroyed, and then printing ink can't be sealed, leads to the unable normal use of cylinder refill.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball-point pen refill to alleviate the cylinder refill that exists among the prior art and be disposable product, cause a large amount of resources to be wasted, and when annotating printing ink to the cylinder refill, can destroy cylinder refill inner structure, lead to unable use, extravagant technical problem more.

The embodiment of the utility model is realized like this:

the utility model provides a pair of ball-point pen refill, include: the pen comprises a pen point, a first pen tube, a second pen tube, a fixing mechanism and an adjusting mechanism;

one end of the first pen tube is connected with the pen point, one end of the pen point, which is far away from the first pen tube, is provided with a ball, the second pen tube is accommodated in the first pen tube and is connected with the inner wall of the first pen tube through the fixing mechanism, the fixing mechanism is used for fixing the second pen tube in the first pen tube, ink is accommodated between the first pen tube and the second pen tube, and one end of the first pen tube, which is far away from the pen point, is provided with a silicone oil layer for blocking the ink;

the second pen tube is used for conveying external ink to one end, close to the pen point, of the first pen tube, so that the ink conveyed into the first pen tube enters between the pen point and the silicon oil layer;

the adjusting mechanism is arranged between the pen point and the first pen tube, can move relative to the first pen tube, and is used for adjusting the communication or the closing between the first pen tube and the pen point.

In a preferred embodiment of the present invention, the adjusting mechanism includes an adjusting portion, a fixed portion and a movable portion;

first pen pipe sets up to the pipe, the fixed part with first pen pipe is close to the inner wall fixed connection of nib one end, the regulating part is used for inserting and locates in the first pen pipe, the nib passes through the regulating part with first pen union coupling, just the movable part with the regulating part is inserted and is located inner wall fixed connection in the first pen pipe, the regulating part can for first pen pipe rotates, the regulating part is used for driving the movable part for the fixed part rotates, so that the movable part can for the fixed part is in first pen pipe internal rotation, works as the movable part with when the fixed part is and arranges side by side, the movable part with the fixed part can close jointly first pen pipe with passageway between the nib.

In a preferred embodiment of the present invention, the fixed portion is provided with a receiving groove, and the movable portion and the receiving groove are located in the same plane, and are configured to enable the movable portion to be located in the receiving groove;

the adjusting part comprises an adjusting pipe, one end of the adjusting pipe, which is close to the first pen tube, is rotatably connected with the first pen tube, and a damping layer is arranged between the adjusting pipe and the first pen tube.

In a preferred embodiment of the present invention, the movable portion is provided in plural, the movable portions are provided at equal intervals along the circumferential direction of the adjusting portion, and the number of the fixing portions corresponds to the number of the movable portions, so that any one of the movable portions can be accommodated in the accommodating groove of the fixing portion;

the accommodating grooves of the fixing parts comprise a first accommodating groove and a second accommodating groove, the movable part can be completely accommodated in the first accommodating groove, when the adjusting part drives the movable part to rotate relative to the fixing parts, the movable part is used for penetrating through the space between the two fixing parts and is inserted into the second accommodating groove of the adjacent fixing part, and the movable part is used for sealing the space between the two adjacent fixing parts.

In a preferred embodiment of the present invention, the fixing mechanism includes a plurality of fixing brackets;

it is a plurality of the fixed bolster along the extending direction of first pen holder evenly sets up, and is a plurality of the fixed bolster all with the inside fixed connection of first pen holder, the fixed bolster is kept away from one side of the inner wall of first pen holder is provided with a plurality of fixed legs, and is a plurality of the fixed leg with second pen holder fixed connection, and the flowing groove of circulation printing ink has between two arbitrary fixed legs.

In a preferred embodiment of the present invention, the device further comprises an injection mechanism;

one end of the injection mechanism is inserted into the second pen tube, the injection mechanism is detachably connected with one end, away from the pen point, of the first pen tube, an injection part is arranged at one end, away from the second pen tube, of the injection mechanism, the injection part is used for injecting the printing ink into the second pen tube, a control valve is arranged at one end, away from the injection mechanism, of the second pen tube, and the second pen tube is used for conveying the printing ink into the first pen tube quantitatively through the control valve.

In a preferred embodiment of the present invention, the injection mechanism comprises a first injection tube, a second injection tube, an air exhaust part and an injection part;

the second injection tube is located in the first injection tube, the first injection tube is communicated with the air exhaust part, the second injection tube is communicated with the injection part, the first injection tube is inserted in the second pen tube, the air exhaust part is used for exhausting air in the second pen tube through the first injection tube, one end, far away from the injection part, of the second injection tube can stretch out of the outer part of the first injection tube, and the injection part injects ink into the second pen tube through the second injection tube.

In a preferred embodiment of the present invention, the injection part comprises an injection cavity and a propeller; the air pumping part comprises an air pumping cavity, a micro air pump and an air pump button;

the injection cavity is positioned in the air pumping cavity, a gap for forming an air pumping layer is formed between the injection cavity and the air pumping cavity, the miniature air pump is positioned in the air pumping layer, the first injection pipe is connected with the side wall of the air pumping cavity so as to enable the first injection pipe to be communicated with the air pumping layer, and the second injection pipe is connected with the side wall of the injection cavity so as to enable the second injection pipe to be communicated with the interior of the injection cavity;

the propeller is arranged at one end of the injection cavity, which is far away from the second injection pipe, the injection cavity is used for containing ink, the propeller is used for pushing the ink in the injection cavity into the second injection pipe, and the outside of the injection cavity is provided with scale marks;

the air pump button is arranged at one end, far away from the first injection pipe, of the air pumping cavity, the air pump button is electrically connected with the miniature air pump, and the air pump button is used for controlling the opening and closing of the miniature air pump.

In a preferred embodiment of the present invention, a position where the air-extracting cavity is connected to the first pen tube is set as a tapered end, and the air-extracting cavity is connected to the first pen tube through the tapered end by a screw thread;

the air exhaust cavity and one end, far away from the first injection pipe, of the injection cavity are fixedly connected.

In the preferred embodiment of the present invention, a warning line is disposed on the first pen tube, the warning line is located on one side of the pen head away from the control valve, and a warning space is formed between the warning line and the control valve.

The utility model discloses beneficial effect includes:

the utility model provides a pair of ball-point pen refill, include: the pen comprises a pen point, a first pen tube, a second pen tube, a fixing mechanism and an adjusting mechanism; one end of the first pen tube is connected with the pen point, one end of the pen point, which is far away from the first pen tube, is provided with a ball, the second pen tube is accommodated in the first pen tube, the second pen tube is connected with the inner wall of the first pen tube through a fixing mechanism, the fixing mechanism is used for fixing the second pen tube in the first pen tube, ink is accommodated between the first pen tube and the second pen tube, and one end of the first pen tube, which is far away from the pen point, is provided with a silicone oil layer for blocking the ink; the second pen tube is used for conveying external ink to one end, close to the pen point, of the first pen tube, so that the ink conveyed into the first pen tube enters between the pen point and the silicone oil layer, the second pen tube belongs to one part of the whole structure, and the second pen tube is fixedly arranged in the first pen tube, so that when the ink is conveyed into the first pen tube through the second pen tube, the sealing effect of the silicone oil layer cannot be damaged, the technical problems that a cylindrical pen core in the prior art is a disposable product, a large amount of resources are wasted, and when the cylindrical pen core is filled with the ink, the internal structure of the cylindrical pen core can be damaged, the cylindrical pen core cannot be used and is more wasted are solved; furthermore, due to the writing requirement, a gap is formed between the pen point and the ball, and the condition that the pen point leaks oil exists when ink is injected into the first pen tube is avoided; guaranteed not to have ink to spill over from the clearance between nib and the ball when injecting ink into first pen pipe for the design is more reasonable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a pen barrel of a ball-point pen refill provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of an injection mechanism of a ballpoint pen refill according to an embodiment of the present invention;

fig. 3 is a schematic view of an overall structure of a ball-point pen refill according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an adjusting mechanism of a ball-point pen refill provided in an embodiment of the present invention in an open state;

fig. 5 is a schematic structural view of an adjusting mechanism of a ballpoint pen refill according to an embodiment of the present invention in a closed state.

Icon: 100-pen point; 101-round beads; 200-a first pen tube; 201-warning line; 300-a second pen tube; 301-a control valve; 400-a fixing mechanism; 500-an adjustment mechanism; 501-a movable part; 502-a fixation section; 503-a receiving groove; 513-a first accommodating groove; 523-a second accommodating groove; 600-an injection mechanism; 601-a first syringe; 602-a second syringe; 603-an air extraction part; 613-air exhaust cavity; 623-air pump button; 633-a tapered end; 604-an injection part; 614-injection cavity; 624-propeller; 634-scale lines.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

As shown in fig. 1 to 5, the present embodiment provides a ballpoint pen refill, including: the pen head 100, the first pen tube 200, the second pen tube 300, the fixing mechanism 400 and the adjusting mechanism 500; one end of the first pen tube 200 is connected with the pen point 100, one end of the pen point 100, which is far away from the first pen tube 200, is provided with the ball-point 101, the second pen tube 300 is accommodated in the first pen tube 200, the second pen tube 300 is connected with the inner wall of the first pen tube 200 through a fixing mechanism 400, the fixing mechanism 400 is used for fixing the second pen tube 300 in the first pen tube 200, ink is accommodated between the first pen tube 200 and the second pen tube 300, and one end of the first pen tube 200, which is far away from the pen point 100, is provided with a silicone oil layer for blocking the ink; the second pen barrel 300 is used for delivering external ink to one end of the first pen barrel 200 close to the pen point 100, so that the ink delivered into the first pen barrel 200 enters between the pen point 100 and the silicon oil layer; the adjusting mechanism 500 is disposed between the pen tip 100 and the first pen tube 200, the adjusting mechanism 500 can move relative to the first pen tube 200, and the adjusting mechanism 500 is used for adjusting the communication or the closing between the first pen tube 200 and the pen tip 100.

It should be noted that the inner diameter of the first pen barrel 200 is larger than the outer diameter of the second pen barrel 300, and a gap for accommodating ink is formed between the first pen barrel 200 and the second pen barrel 300, so that the inside of the pen point 100 is communicated with the gap between the first pen barrel 200 and the second pen barrel 300 while the pen point 100 can be connected with the first pen barrel 200, and thus the ink can enter the pen point 100, and the ball 101 of the pen point 100 can be used for writing; the second pen barrel 300 serves as a fixed channel for conveying ink into the first pen barrel 200, and the movement trend between the second pen barrel 300 and the silicon oil layer is fixed, in other words, because the second pen barrel 300 is fixedly connected with the first pen barrel 200 through the fixing mechanism 400, the silicon oil layer only needs to move along the extending direction of the second pen barrel 300 in the ink descending process, and because the silicon oil layer gradually moves downwards under the influence of gravity, the problem that the second pen barrel 300 is inserted into the silicon oil layer to damage the silicon oil layer cannot occur.

In this embodiment, when ink needs to be filled into the first pen tube 200, at this time, the adjusting mechanism 500 is used to close the channel between the first pen tube 200 and the pen point 100, when ink is filled into the first pen tube 200 through the second pen tube 300, the ink enters between the pen point 100 and the silicone oil layer, because the pen point 100 is in a closed state at this time, the ink can reversely push the silicone oil layer to move towards the end far away from the pen point 100, until the ink is filled into a specific position, at this time, the ink is stopped being filled into the second pen tube 300, and the channel between the first pen tube 200 and the pen point 100 is opened through the adjusting device, so that normal writing is performed.

In the preferred embodiment of the present invention, the first pen barrel 200 is provided with a warning line 201, the warning line 201 is located on one side of the control valve 301 away from the pen point 100, and a warning space is provided between the warning line 201 and the control valve 301. Wherein, the printing ink of normal use ball-point pen refill is consuming gradually, and when the silicon oil layer was close to warning line 201 gradually, the suggestion user need be to refill printing ink this moment, and optionally, the warning line position that can all set up first pen pipe 200 and outside pen shell into transparent structure, can make the more accurate in service behavior of printing ink of user.

Optionally, a prompt line may be disposed at an end of the first barrel 200 away from the pen point 100, and the prompt line may prompt a user where the height of the first barrel is limited when the ink is injected, so that the overall design is more reasonable.

In addition, since the silicone oil layer is disposed at the end of the ink far from the pen tip 100, which is a conventional technical means in the art, it will not be described herein again.

The utility model discloses beneficial effect includes: the embodiment provides a ball-point pen refill, includes: the pen head 100, the first pen tube 200, the second pen tube 300, the fixing mechanism 400 and the adjusting mechanism 500; one end of the first pen tube 200 is connected with the pen point 100, one end of the pen point 100, which is far away from the first pen tube 200, is provided with the ball-point 101, the second pen tube 300 is accommodated in the first pen tube 200, the second pen tube 300 is connected with the inner wall of the first pen tube 200 through a fixing mechanism 400, the fixing mechanism 400 is used for fixing the second pen tube 300 in the first pen tube 200, ink is accommodated between the first pen tube 200 and the second pen tube 300, and one end of the first pen tube 200, which is far away from the pen point 100, is provided with a silicone oil layer for blocking the ink; the second pen tube 300 is used for conveying external ink to one end, close to the pen point 100, of the first pen tube 200, so that the ink conveyed into the first pen tube 200 enters between the pen point 100 and a silicone oil layer, because the second pen tube 300 belongs to one part of the whole structure, and the second pen tube 300 is fixedly arranged inside the first pen tube 200, when the ink is conveyed into the first pen tube 200 through the second pen tube 300, the sealing effect of the silicone oil layer cannot be damaged, the technical problems that in the prior art, a large amount of resources are wasted due to the fact that a ball-point pen 101 refill is a disposable product, and when the ball-point pen 101 refill is filled with the ink, the internal structure of the ball-point pen 101 refill can be damaged, the ball-point pen 101 refill cannot be used and is wasted are solved; further, due to the requirement of writing, there is a gap between the pen point 100 and the ball-point 101, and there may be a case that the pen point 100 leaks oil when injecting ink into the first pen tube 200, in order to avoid the above-mentioned case, by disposing the adjusting mechanism 500 between the pen point 100 and the first pen tube 200, the adjusting mechanism 500 can move relative to the first pen tube 200, and the adjusting mechanism 500 is used for adjusting the communication or the closing between the first pen tube 200 and the pen point 100; the ink is ensured not to overflow from the gap between the pen point 100 and the ball-point 101 when the ink is injected into the first pen tube 200, so that the design is more reasonable.

In the preferred embodiment of the present invention, the adjusting mechanism 500 comprises an adjusting portion, a fixed portion 502 and a movable portion 501; first pen tube 200 sets up to the pipe, fixed part 502 is close to the inner wall fixed connection of nib 100 one end with first pen tube 200, the regulating part is used for inserting and locates in first pen tube 200, nib 100 passes through the regulating part and is connected with first pen tube 200, and the inner wall fixed connection of locating in first pen tube 200 is inserted to movable part 501 and regulating part, the regulating part can rotate for first pen tube 200, the regulating part is used for driving movable part 501 to rotate for fixed part 502, so that movable part 501 can rotate at first pen tube 200 for fixed part 502, when movable part 501 and fixed part 502 are and arrange side by side, the passageway between first pen tube 200 and nib 100 can be closed jointly to movable part 501 and fixed part 502.

The adjusting part can be provided with a round tube with plugs at two ends, wherein the round tube of the adjusting part has the same outer diameter as the first pen tube 200 and the pen point 100, the adjusting part is inserted into the first pen tube 200 and the pen point 100 by using the plugs at two ends, optionally, the adjusting part can be connected with the pen point 100 by threads, the adjusting part can be matched with the first pen tube 200 by adopting a light tube, meanwhile, the adjusting part and the first pen tube 200 are provided with small damping bulges, and the stability of the adjusting part and the first pen tube 200 in a normal writing state can be ensured by using the small damping bulges; when the adjustment part is needed to drive the movable part 501 to move relative to the first pen barrel 200, the adjustment part only needs to be rotated manually.

As shown in fig. 4 and 5, in the preferred embodiment of the present invention, the fixing portion 502 is provided with a containing groove 503, and the movable portion 501 and the containing groove 503 are located in the same plane, so that the movable portion 501 can be located in the containing groove 503; the adjusting part comprises an adjusting pipe, one end of the adjusting pipe close to the first pen tube 200 is rotatably connected with the first pen tube 200, and a damping layer is arranged between the adjusting pipe and the first pen tube 200.

In the preferred embodiment of the present invention, the plurality of movable portions 501 are provided, the plurality of movable portions 501 are disposed at equal intervals along the circumferential direction of the adjusting portion, and the number of the fixing portions 502 corresponds to the number of the movable portions 501, so that any one of the movable portions 501 can be accommodated in the accommodating groove 503 of the fixing portion 502; the accommodating groove 503 of the fixing portion 502 includes a first accommodating groove 513 and a second accommodating groove 523, the movable portion 501 can be completely accommodated in the first accommodating groove 513, when the adjusting portion drives the movable portion 501 to rotate relative to the fixing portion 502, the movable portion 501 is configured to penetrate through a gap between two fixing portions 502 and is inserted into the second accommodating groove 523 of an adjacent fixing portion 502, and the movable portion 501 is configured to seal the gap between two adjacent fixing portions 502.

In this embodiment, the movable portion 501 may be a movable plate, and the fixed portion 502 includes a first receiving slot 513 and a second receiving slot 523, wherein the area of the movable plate is smaller than or equal to the area of the first receiving slot 513, so that the movable plate is completely received in the first receiving slot 513, and meanwhile, the distance between the two fixed portions 502 is smaller than the area of the movable plate, so when the adjusting tube drives the movable plate to rotate relative to the fixed portion 502, one end of the movable plate in the first receiving slot 513, which extends out of the first receiving slot 513, can penetrate through the distance between the two fixed portions 502 and then be inserted into the second receiving slot 523 of the adjacent fixed portion 502, so that the first pen tube 200 and the pen point 100 are communicated or closed by rotation adjustment of the fixed portion 502 and the movable portion. Optionally, the first receiving groove 513 and the second receiving groove 523 are separated by a baffle.

In addition, a plurality of movable portions 501 may be disposed between any two fixed portions 502, wherein the plurality of movable portions 501 are sequentially hinged, the plurality of movable portions 501 can be stacked in the same first receiving cavity 513 of the fixed portions 502, and the plurality of movable portions 501 have the same structure, wherein any movable portion 501 may still adopt the movable plate provided in the above embodiment, at this time, the distance between any two fixed portions 502 is greater than the distance between two fixed portions 502 in the above embodiment, the movable portions 501 at two edges of the plurality of movable portions 501 are respectively connected with the baffle plate and the adjusting tube of the first receiving cavity 513 of the fixed portion 502, the movable portions 501 are hinged with the fixed portions 502, the movable portions 501 are fixedly connected with the adjusting tube, and the adjusting tube can sequentially drive the plurality of movable portions 501 to rotate relative to the fixed portions 502, so that the structure formed by the plurality of movable portions 501 and the fixed portions 502 blocks the flow of the ink between the first pen tube 200 and the pen point 100, the embodiment can increase the distance between the two fixing portions 502, so that the ink can flow into the pen point 100 better.

In addition, the adjusting mechanism 500 provided in this embodiment may also adopt a vertical reciprocating motion mode, and the movable portion 501 blocks the distance between the two fixed portions 502; the fixed part 502 is fixedly connected with the inner wall of the first pen tube 200, the movable part 501 is slidably connected with the inner wall of the first pen tube 200, the movable part 501 and the fixed part 502 are arranged on two horizontal planes along the extending direction of the first pen tube 200, the adjusting part is inserted in the first pen tube 200 and is connected with the movable part 501, the adjusting part is used for driving the movable part 501 to be slidably connected with the inner wall of the first pen tube 200, so that the movable part 501 moves to the plane where the fixed part 502 is located, and a channel between the first pen tube 200 and the pen point 100 is closed through the whole formed by the movable part 501 and the fixed part 502.

The fixed part 502 comprises a plurality of fixed plates which are arranged in a staggered manner, the movable part 501 comprises a plurality of movable plates which are arranged in a staggered manner, and the distance between any two fixed plates is the same as the structure of the corresponding movable plate, so that the movable plates can be inserted into the clamping grooves between the fixed plates; optionally, when the adjusting portion is completely inserted into the first pen tube 200, the fixed plate and the movable plate are located in two planes, and when the adjusting portion drives the movable plate to be inserted into or pulled out of the first pen tube 200, the movable plate can be driven to the plane where the fixed plate is located, and meanwhile, in order to ensure that the movable plate can be located on the plane where the fixed plate is located right, the first pen tube 200 is provided with a limiting protrusion between the two fixed plates on the plane, and the protrusion can be abutted against the movable plate to fix the movable plate in the plane where the fixed plate is located; meanwhile, when the adjusting portion is required to be completely separated from the first pen tube 200, the adjusting portion is only required to be rotated when the movable plate is abutted to the limiting protrusion, so that the limiting protrusion is separated from the movable plate and then is outwardly pulled out relative to the first pen tube 200.

In a preferred embodiment of the present invention, the fixing mechanism 400 comprises a plurality of fixing brackets; a plurality of fixed bolsters evenly set up along the extending direction of first pen tube 200, a plurality of fixed bolsters all with the inside fixed connection of first pen tube 200, one side that the inner wall of first pen tube 200 was kept away from to the fixed bolsters is provided with a plurality of fixed legs, a plurality of fixed legs and second pen tube 300 fixed connection, and have the flowing groove of circulation printing ink between two arbitrary fixed legs.

Optionally, the fixing bracket is an annular fixing bracket, and a leg is disposed at a position of the annular fixing bracket facing the second pen holder 300, wherein the first leg and the second pen holder 300 can be fixed in an adhesive manner or in an insertion manner.

In addition, in order to ensure that the side surface of the annular fixing support far from the leg blocks the ink flowing along the inner wall of the first pen tube 200, the side surface of the annular fixing support can also be provided with the leg connected with the first pen tube 200, so that the ink can better flow along the inner wall of the first pen tube 200.

In this embodiment, the external injection mechanism 600 may be used to inject ink into the second pen barrel 300, and in order to enable the ballpoint pen core provided in this embodiment to better inject ink into the second pen barrel 300, one end of the first pen barrel 200 away from the pen point 100 may be connected to the injection mechanism 600; in the preferred embodiment of the present invention, the present invention further comprises an injection mechanism 600; one end of the injection mechanism 600 is inserted into the second pen tube 300, the injection mechanism 600 is detachably connected with one end of the first pen tube 200, which is far away from the pen point 100, an injection part 604 is arranged at one end of the injection mechanism 600, which is far away from the second pen tube 300, the injection part 604 is used for injecting ink into the second pen tube 300, a control valve 301 is arranged at one end of the second pen tube 300, which is far away from the injection mechanism 600, and the second pen tube 300 is used for quantitatively delivering ink into the first pen tube 200 through the control valve 301.

Alternatively, the control valve 301 may be an electromagnetic valve, and the timing of injecting the ink into the first pen barrel 200 may be more conveniently controlled by controlling the electromagnetic valve.

It should be noted that when the second pen barrel 300 is used to inject ink into the first pen barrel 200, air may be mixed into the ink, and when the air is mixed into the ink, there may occur a situation that there is no ink suddenly during writing, which seriously affects the writing quality, and in order to alleviate the above situation, in a preferred embodiment of the present invention, the injection mechanism 600 includes a first injection tube 601, a second injection tube 602, an air exhaust portion 603, and an injection portion 604; the second injection tube 602 is located in the first injection tube 601, the first injection tube 601 is communicated with the air exhaust portion 603, the second injection tube 602 is communicated with the injection portion 604, the first injection tube 601 is inserted into the second pen tube 300, the air exhaust portion 603 is used for exhausting air in the second pen tube 300 through the first injection tube 601, one end, far away from the injection portion 604, of the second injection tube 602 can extend out of the first injection tube 601, and the injection portion 604 injects ink into the second pen tube 300 through the second injection tube 602.

In a preferred embodiment of the present invention, the injection portion 604 comprises an injection cavity 614 and a pusher 624; the air extraction part 603 comprises an air extraction cavity 613, a micro air pump and an air pump button 623; the injection cavity 614 is located inside the pumping cavity 613, a gap for forming a pumping layer is formed between the injection cavity 614 and the pumping cavity 613, the micro air pump is located inside the pumping layer, the first injection tube 601 is connected with the side wall of the pumping cavity 613 so as to communicate the first injection tube 601 with the pumping layer, and the second injection tube 602 is connected with the side wall of the injection cavity 614 so as to communicate the second injection tube 602 with the inside of the injection cavity 614; the pusher 624 is disposed at one end of the injection cavity 614 far away from the second injection tube 602, the injection cavity 614 is used for accommodating ink, the pusher 624 is used for pushing the ink in the injection cavity 614 into the second injection tube 602, and the outside of the injection cavity 614 is provided with scale lines 634; the air pump button 623 is disposed at an end of the air pumping cavity 613 away from the first injection tube 601, the air pump button 623 is electrically connected to the micro air pump, and the air pump button 623 is used for controlling the on/off of the micro air pump.

In this embodiment, before the second injection tube 602 assists to inject ink into the second pen tube 300, at this time, the first injection tube 601 and the second injection tube 602 are both located in the second pen tube 300, and preferably, the front ends of the first injection tube 601 and the second injection tube 602 are both close to the control valve 301 of the second pen tube 300, the air pump button 623 is used to start the micro air pump, so as to suck residual air in the second pen tube 300 through a gap channel between the first injection tube 601 and the second injection tube 602, and close an air layer channel port after the suction is finished; at this time, the solenoid valve is opened, ink is injected into the second injection tube 602 by the pusher 624, so that the second injection tube 602 is used to inject ink into the second pen tube 300 and the first pen tube 200 synchronously, and because the pen point 100 and the first pen tube 200 are in a closed state at this time, the ink can only be pushed towards the tail end of the first pen tube 200 against the direction of the silicone layer until the ink injection is finished, and the control valve 301 is closed at this time, so that air is not mixed between the first pen tube 200 and the second pen tube 300, and meanwhile, a passage port of the micro air pump is opened, and air is filled into the second pen tube 300.

In the preferred embodiment of the present invention, the connection position of the air pumping cavity 613 and the first pen barrel 200 is set as the tapered end 633, and the air pumping cavity 613 is connected to the first pen barrel 200 through the tapered end 633 by a screw; the end of the exhaust cavity 613 and the end of the injection cavity 614 far away from the first injection tube 601 are fixedly connected.

Alternatively, injection mechanism 600 may be permanently coupled to first barrel 200 using tapered end 633 of suction chamber 613, and alternatively, injection mechanism 600 may be removed by unscrewing tapered end 633 from first barrel 200.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A ballpoint pen refill, comprising: the pen comprises a pen point, a first pen tube, a second pen tube, a fixing mechanism and an adjusting mechanism;

2. A ballpoint pen refill according to claim 1, wherein the adjustment mechanism comprises an adjustment portion, a fixed portion and a movable portion;

3. A ballpoint pen refill according to claim 2, wherein the fixed part is provided with a receiving recess, and the movable part is located in the same plane as the receiving recess and arranged such that the movable part can be located in the receiving recess;

4. A ballpoint pen refill according to claim 3, wherein the movable portion is provided in plurality, the movable portions are provided in plurality at equal intervals in a circumferential direction of the adjustment portion, and the number of the fixing portions corresponds to the number of the movable portions so that any one of the movable portions can be accommodated in the accommodation groove of the fixing portion;

5. A ballpoint pen refill according to claim 1, wherein the fixing mechanism comprises a plurality of fixing brackets;

6. A ballpoint pen refill according to any of claims 1 to 5, further comprising an injection mechanism;

7. A ballpoint pen refill according to claim 6, wherein the injection mechanism comprises a first injection tube, a second injection tube, an evacuation section and an injection section;

8. A ballpoint pen refill according to claim 7, wherein the injection part comprises an injection chamber and a pusher; the air pumping part comprises an air pumping cavity, a micro air pump and an air pump button;

9. A ballpoint pen refill according to claim 8, wherein the connection position of the air suction chamber and the first pen tube is a tapered end, and the air suction chamber is in threaded connection with the first pen tube through the tapered end;

10. A ballpoint pen refill according to claim 6, wherein a warning line is arranged on the first pen barrel, the warning line is positioned on one side of the control valve, which is far away from the pen point, and a warning space is arranged between the warning line and the control valve.