CN210211801U - Writing pen capable of adding ink - Google Patents

Abstract

The utility model relates to a writing pen capable of adding ink, which comprises a pen clip, a pen cap, a pen point cover, a pen point, a spring thimble, an ink containing pen holder, a soft body at a holding part, a hollow elastic body, a sealing plug, an ink adding pipe, an ink adding piston, a snap spring fixing cover, an O-shaped ring, an air channel, an ink containing space and a closed space with variable volume, wherein the ink containing space with variable volume is formed by the hollow elastic body and the ink containing pen bar, and the ink can be repeatedly added and injected by matching the ink adding pipe and the ink adding piston; the ink can be written on the medium surface with low friction force and under the condition of no gravity by using the elastic force of the hollow elastic body to provide nearly constant pressure to act on the ink.

Description

Writing pen capable of adding ink

Technical Field

The invention relates to a pen, in particular to a writing pen capable of adding ink.

Background

The pen is a common writing tool, generally divided into pens, pencils, ball pens and the like, wherein the ball pens are also divided into oil ball pens, gel pens and water pens, the different names are also called as ball-point pens, sign pens, ball-point pens and the like, the writing principle is that ink or ink in an ink tube is brought out by a ball of a ball in a pen point rolling on a writing medium by the self weight of the ink or the ink is uniformly coated on the writing medium, and the common ball pens, the gel pens, the ball-point pens and the like based on the same principle cannot write normally under the conditions of no gravity and small friction of the writing medium, such as on glass or a smooth plastic sheet and the like, because the ball of the rolling of the ball in the pen point and the self weight of the ink or the ink is needed for writing; when in use, the pen point can be blocked due to the influence of ink and writing medium, and the pen point is not easy to treat and is usually scrapped; at present, most refills of gel-ink pens and ball-point pens are disposable, and the design of adding ink is not adopted, so that the risk of environmental pollution is increased if the disposable refills discarded after the ink is used up cannot be properly treated.

Disclosure of Invention

The invention solves the problem of providing a writing pen capable of adding ink, which can write on the medium surface with small friction force and under the condition of no gravity; the device which can be arranged by the ink-adding writing pen can be used for trying to repair the pen easily if the pen point is blocked; compared with the common disposable refill, the refill has larger ink capacity and can repeatedly add ink and replace the pen point, thereby avoiding the problem of environmental pollution caused by frequent replacement and abandonment of the disposable refill and simultaneously reducing the use cost;

the technical scheme adopted by the invention for solving the problems is as follows:

a writing pen capable of adding ink comprises a pen clip, a pen cap, a pen point cover, a pen point, a spring thimble, an ink containing pen holder, a holding soft body, a hollow elastic body, a sealing plug, an ink adding pipe, an ink adding piston, a clamp spring fixing cover, an O-shaped ring, an air passage, an ink containing space and a closed space with variable volume; the pen clip and the pen cap are respectively provided with a buckle which is matched with each other in a combined manner and a clamping groove which can be combined together, and both the pen clip and the pen cap are provided with raised reinforcing ribs which can be used as tools for disassembling and assembling the pen point cover; the nib cover is provided with a groove matched with the pen cap and the pen clip raised reinforcing ribs for facilitating disassembly and assembly, and is provided with an O-shaped ring placement position, a nib through hole and a threaded interface, the nib cover is matched with the ink containing pen holder and the O-shaped ring to fix the nib, and the nib can be disassembled, assembled and replaced relatively easily; the pen point is provided with a ball and an ink channel, and a spring thimble is arranged to apply thrust to the ball of the pen point from the ink channel; the spring thimble is arranged into a section of straight line, and the rest springs are connected into a whole and arranged between the pen point and the ink containing pen rod; the ink containing pen rod is provided with a clamping groove matched with the pen cap, a pen point installation position, a soft body installation position at a holding part, a spring thimble installation position, an inner hole, an ink channel, a convex rib, a hollow elastic body sealing matching position, a threaded interface and an O-shaped ring matching position, wherein the threaded interface and the O-shaped ring matching position are respectively connected with the pen point cover and the ink adding pipe; the holding part soft body is arranged to be wrapped outside the holding part of the ink containing pen rod; the hollow elastic body is in a hollow tubular shape with one end closed and the other end open, the open end is provided with a sealing plug, air in the hollow elastic body is pumped out through a through hole arranged on the sealing plug, and the hollow elastic body can be contracted under negative pressure; the sealing plug is provided with an O-shaped ring placing position, a through hole, a matching position with the ink adding pipe and a hollow elastomer mounting sealing position; the ink containing space is formed by installing a sealing plug into one open end of a hollow tubular elastomer, installing the closed end of the hollow elastomer forwards into an inner hole of an ink containing pen rod, one end provided with the sealing plug is supported by the sealing plug mounting sealing position to press the hollow elastic body to the hollow elastic body sealing matching position arranged in the ink containing pen holder for sealing, an ink containing space and an ink channel for supplying ink to the ball of the pen point are formed among the inner hole wall of the ink containing pen rod, the outer surface of the hollow elastic body and the pen point, negative pressure is applied to the interior of the hollow elastic body through the through hole arranged on the sealing plug, the hollow elastic body can shrink under the negative pressure, the ink containing space is enlarged to generate negative pressure, the negative pressure can be absorbed from the outside through the ink channel, the negative pressure disappears when the inside of the hollow elastic body is communicated with the atmosphere, and the elastic force of the self-recovered shape of the hollow elastic body can press the ink containing space to enable the ink to flow out from the ink channel to the outside; the ink adding pipe is provided with a threaded interface respectively connected with the ink containing pen holder and the clamp spring fixing cover, one end connected with the ink containing pen holder is provided with an inner hole in clearance fit with the piston head, the inner hole diameter and the length are respectively larger than the outer diameter and the length of the piston head, the inner hole is connected with the piston head and is matched with the piston head for sliding sealing, and the ink adding pipe is also provided with an O-shaped ring matching position and a sealing plug matching position; the inking piston is provided with a raised rib position, a piston head, a piston rod and a piston handle, an O-shaped ring placing groove is arranged on the cylindrical surface of the piston head, a positioning clamping groove is arranged on the connecting rod, and a positioning boss is arranged at the piston handle and is matched with a through hole arranged in the clamp spring fixing cover to play a radial positioning role; the clamp spring is provided with an installation position, is fixed between the ink adding pipe and the clamp spring fixing cover by using the clamp spring fixing cover, and is provided with a clamping position matched with a positioning clamping groove arranged in the ink adding piston, and the clamp spring is matched with the positioning clamping groove arranged in the ink adding piston to play a role in fixing the axial relative position of the ink adding piston and the ink adding pipe; the clamp spring fixing cover is provided with a threaded interface, a clamp spring mounting position, a through hole and a ventilation groove; the number of the O-shaped rings is multiple, and the O-shaped rings are respectively used at multiple positions; the air path channel and the closed space with variable volume are formed by connecting one end of an ink containing pen rod mounting sealing plug with an ink adding tube matched with a hollow elastic body, a sealing plug, an ink adding piston, an O-shaped ring and a clamp spring fixing cover to form an air path channel which is isolated from the ink containing space and can form the space with variable volume or conduct atmosphere by changing the relative axial position of the ink adding piston and the ink adding tube, when the piston head is positioned in the middle of an inner hole which is arranged in the ink adding tube and is in clearance fit with the piston head, an air path channel which is communicated with the inside of the hollow elastic body and the atmosphere is formed, the piston head axially moves from the position in the middle of the inner hole which is arranged in the ink adding tube and is in clearance fit with the piston head to the position of a sliding sealing inner hole which is arranged in the ink adding tube and is matched with the piston head by pulling a piston handle, the hollow elastic body shrinks after receiving the negative pressure, the ink containing space between the inside of the ink containing pen rod and the outer surface of the hollow elastic body is increased to generate the negative pressure, and then ink can be sucked from an ink channel at the place where the pen point is arranged, after the pen point, the O-shaped ring and the pen point cover are installed to seal the ink containing space, the piston handle is pushed to enable the piston head to move to the middle position of an inner hole which is arranged in the ink adding pipe and is in clearance fit with the piston head to form an air passage channel which enables the inside of the hollow elastic body to be communicated with the external atmosphere, the negative pressure applied on the hollow elastic body disappears, the elastic force of the hollow elastic body which maintains the shape compresses the ink containing space to generate pressure on the ink, so that the ink flows out from a gap between the ball bearing hole of the pen point and the ball bearing hole in the pen point through the ink passage, and the ball bearing pressure on the ball bearing moves towards the direction of the ink to reduce the gap, when writing, the ball contacts the surface of the writing medium to bear pressure, and moves in the opposite direction to increase the gap and enable ink to flow out or increase the speed of ink flow out, so that writing can be realized; the thickness and the material of the hollow elastic body are changed to adjust the size of the hollow elastic body to maintain the self shape force so as to control the outflow speed of the ink during writing, and the outflow speed of the ink during writing can also be controlled by adjusting the viscosity of the ink and changing the fluidity of the ink;

preferably, the spring thimble applies thrust to the ball along the ink flowing direction, the pressure provided by the hollow elastic body in the inner part and the thrust of the spring thimble enable the ball of the pen point to be more closely attached to the bearing hole of the ball wrapped in the pen point, the ball of the pen point can better block the ink from flowing out under the condition that the ball of the pen point is not subjected to external pressure in a non-writing state, and the pressure during writing enables the ball of the pen point to be subjected to the reaction force on the surface of a writing medium, so that the two resultant forces can be easily overcome to enable the ink to flow out, thereby obtaining the gain effect of sensitively controlling the flowing out and blocking of the ink and simultaneously reducing the requirement on the fluidity of the ink;

as an alternative to the nib, a spring needle valve type nib may be employed, comprising a nib housing, a spring needle; the pen point shell is provided with an ink channel and a conical hole; the spring valve needle is provided with a section of spring connected with the valve needle, the head of the valve needle is a semicircular spherical surface, a section of conical cylindrical surface is connected with the conical hole of the pen point shell, the thrust of the spring enables the gap between the conical cylindrical surface of the head and the conical hole of the pen point shell to be reduced so as to block the ink from flowing out, when in use, the force during writing is applied to the semicircular spherical surface of the head of the spring valve needle through a writing medium, so that the valve needle retracts, the gap between the conical cylindrical surface of the head of the valve needle and the conical hole of the pen point shell is enlarged, and;

as an alternative scheme of the pen point ball, the pen point ball can adopt a common ball which is prepared without a special process to reduce the technical difficulty of manufacturing the pen point ball because the hollow elastic body provides pressure to realize writing;

the beneficial effect of adopting above-mentioned technical scheme is:

the ink can be used under the condition of no gravity and more media because the hollow elastic body provides pressure for the ink; the possibility of environmental pollution caused by waste is reduced by repeated ink adding and recycling; if the pen point is blocked, the ink adding piston can be used for indirectly applying pressure to the ink by applying air pressure to the hollow elastic body and pressing the ball on the pen point to increase a gap between the ball and a bearing hole wrapping the ball in the pen point, so that the flowing of the ink is accelerated to break away the blocking object, and the probability of prolonging the service cycle of the pen point is increased; the structure is simple, and the materials and the process are easy to obtain and realize.

Drawings

FIG. 1-1 is a front view of a pen clip schematic of the present invention

FIG. 1-2 is a schematic view of a pen clip of the present invention, the sectional view taken along line H-H of FIG. 1-1

FIGS. 1-3 are J-J cross-sectional views of the pen clip of the present invention, the pen clip being schematically illustrated in FIGS. 1-1

FIG. 2-1 is a front view of a pen cap schematic of the present invention

FIG. 2-2 is a schematic view of a pen cap of the present invention, the sectional view taken along line H-H of FIG. 2-1

FIGS. 2-3 are J-J sectional views of FIG. 2-1 of a pen cap schematic view of the present invention

FIG. 3-1 is a front view of a nib cover schematic of the present invention

FIG. 3-2 is a schematic view of a nib cover of the present invention, the sectional view A-A of FIG. 3-1

FIG. 3-3 is a schematic top view of the nib cover of the present invention and FIG. 3-1

FIG. 4-1 is a front view of a nib of the present invention

FIG. 4-2 is a schematic view of a nib of the present invention, the sectional view A-A of FIG. 4-1

FIG. 5 is a schematic view of a pogo pin according to an embodiment of the present invention

FIG. 6-1 is a front view of a schematic of an ink stick for holding ink according to a schematic of the present invention

FIG. 6-2 is a schematic view of an ink-holding pen shaft of the present invention, the sectional view taken along line H-H of FIG. 6-1

FIG. 6-3 is a schematic view of an ink-holding pen shaft of the present invention, the sectional view taken along line J-J of FIG. 6-1

FIG. 7-1 is a front view of the soft body at the holding part according to the present invention

FIG. 7-2 is a schematic view of the soft mass at the grip of the present invention, the sectional view from F to F of FIG. 7-1

FIG. 8-1 is a front view of a schematic representation of a hollow elastomer of the present invention

FIG. 8-2 is a schematic view of a hollow elastomer of the present invention, the schematic view being taken at K-K of FIG. 8-1

FIG. 9-1 is a front view of the sealing plug schematic of the present invention

FIG. 9-2 is a K-K cross-sectional view of the sealing plug of the schematic view of the present invention, the cross-sectional view being taken along line K-K of FIG. 9-1

FIG. 10-1 is a front view of an ink fill tube schematic of a schematic of the present invention

FIG. 10-2 is a schematic view of an ink fill tube of the present invention and shows a cross-sectional view P-P of FIG. 10-1

FIG. 11 is a schematic view of an inking piston according to the present invention

FIG. 12-1 is a front view of a circlip schematic view of the present invention

FIG. 12-2 is a top view of the circlip schematic of the present invention FIG. 12-1

FIG. 13-1 is a front view of the circlip fixing cover schematic view of the present invention

FIG. 13-2 is a top view of the cover of the snap spring retainer shown in FIG. 13-1

FIG. 13-3 is a cross-sectional view taken along line P-P of FIG. 13-1 and illustrating a snap spring fixing cover according to the present invention

FIG. 14-1 is a front view of a tip and pogo pin of the present invention

FIG. 14-2 is a sectional view A-A of the pen tip and pogo pin of the present invention in FIG. 14-1

FIG. 15-1 is a front view of the assembly of the hollow elastomer and the sealing plug of the present invention

FIG. 15-2 is a schematic view of the assembly of a hollow elastomer and a sealing plug of the present invention, as shown in the cross-sectional view A-A of FIG. 15-1

FIG. 16-1 is a front view of a schematic hollow elastomer contraction view of the present invention

FIG. 16-2 is a schematic drawing of the shrinkage of a hollow elastomer of the present invention, the schematic drawing being taken from section A-A of FIG. 16-1

FIG. 17-1 is a front view of a schematic representation of the present invention showing a hollow elastic body recovering shape to reduce ink containing space

FIG. 17-2 is a cross-sectional view A-A of FIG. 17-1 illustrating the shape recovery of the hollow elastic body to reduce the ink-receiving space according to the present invention

FIG. 18-1 is a front view of a schematic view of the hollow elastic body shrinking to enlarge the ink containing space according to the schematic view of the present invention

FIG. 18-2 is a sectional view A-A of FIG. 18-1 illustrating the hollow elastic body according to the present invention shrinking to increase the ink containing space

FIG. 19-1 is a front view of an assembly schematic of the present invention

FIG. 19-2 is a front view of an assembly schematic of the present invention, the cross-sectional view of FIG. 19-1 taken along line D-D

FIG. 20-1 is a front view of an inking schematic of the present invention

FIG. 20-2 is a front view of an inking schematic of the present invention, cross-sectional view D-D of FIG. 20-1

FIG. 21 is an exploded view of the present invention

FIG. 22-1 is a front view of a schematic diagram of a sprung needle valve nib of the present invention

FIG. 22-2 is a front view of the schematic of the sprung needle valve nib of the present invention, cross-section A-A of FIG. 22-1

FIG. 23-1 is a front view of a schematic of a sprung needle valve nib housing illustrating the present invention

FIG. 23-2 is a front view of a schematic of a sprung needle valve nib housing of the present invention, section A-A of FIG. 23-1

Fig. 24 is a schematic view of a spring needle valve needle of the spring needle type nib of the present invention.

The specific implementation mode is as follows:

as shown in fig. 19-2, 20-2 and 21, the writing pen capable of adding ink comprises a pen clip 1, a pen cap 2, a pen point cover 3, a pen point 4, a spring thimble 5, an ink containing pen rod 6, a holding soft body 7, a hollow elastic body 8, a sealing plug 9, an ink adding pipe 10, an ink adding piston 11, a clamp spring 12, a clamp spring fixing cover 13, O-rings 14-16, an air passage 17, an ink containing space 18 and a closed space 19 with variable volume; the pen clip shown in figures 1-1 and 1-2 is provided with a mounting position (25) matched with the pen cap, and a raised reinforcing rib (24) shown in figures 1-2 and 1-3 can be used as a tool for dismounting the pen point cover; 2-3, the pen cap is provided with a raised reinforcing rib (26) which can be used as a tool for disassembling and assembling the pen point cover, a buckle (28) which is matched with a clamping groove (36) in an ink containing pen rod for increasing damping is arranged as shown in 2-2, and a pen clip mounting position (27) for mounting a pen clip is also arranged; 3-1, 3-3, and 3-2, wherein the nib cover is provided with a groove (29) matched with the cap and the raised rib of the pen clip for convenient assembly and disassembly, and is provided with an O-ring placement position (30), a nib through hole (31) and a threaded interface (32), as shown in the figure 3-2, 4-1, A-A, a cross section, 4-2, a nib with a ball and an ink channel, as shown in the figure 14-1, A-A, a cross section, 14-2, a spring thimble for applying thrust to the ball of the nib from the ink channel; as shown in FIG. 5, the spring thimble is arranged in a straight line (34) and connected with the rest of the spring (35) into a whole to be arranged between the pen point and the ink containing pen rod; as shown in fig. 6-1 and 6-2, the ink-containing pen rod is provided with a clamping groove (36) matched with a pen cap, a pen point installation position (37), a soft body installation position (38) at a holding part, a spring thimble installation position (39), an inner hole (40), an ink channel (41), a convex rib (42), a hollow elastic body sealing matching position (43), a threaded interface (44) connected with a pen point cover, a threaded interface (45) connected with an ink adding pipe and a matching position (47) matched with an O-shaped ring; the soft body at the holding part is arranged as a soft body mounting position (38) at the holding part mounted in the ink-containing pen rod as shown in a cross section F-F of figure 7-1 and figure 7-2; as shown in a sectional view K-K of fig. 8-1, the hollow elastic body is formed in a hollow tubular shape having one end closed (71) and the other end opened (72) as shown in a sectional view a-a of fig. 15-1, one end of the opening is formed to be inserted into a sealing plug as shown in a sectional view a-a of fig. 15-2, and air inside the hollow elastic body is drawn out through a through hole formed in the sealing plug as shown in a sectional view a-a of fig. 16-1, and the hollow elastic body is contracted by negative pressure; the sealing plug shown in figures 9-1 and 9-2 is provided with an O-ring placing position (49), a through hole (50), a matching position (51) with an ink adding pipe and a hollow elastomer mounting and sealing position (48), after the sealing plug shown in a cross section A-A of figure 17-1 is mounted at one end of an opening of a hollow tubular elastomer, the closed end (71) of the hollow elastomer is forwardly mounted in an inner hole of an ink containing pen rod, the end mounted with the sealing plug is supported by the sealing plug mounting and sealing position to press the hollow elastomer to the hollow elastomer sealing and matching position arranged in the ink containing pen rod for sealing, an ink containing space 18 is formed between the inner hole wall of the ink containing pen rod and the outer surface of the hollow elastomer, and air in the hollow elastomer is pumped out through the through hole arranged in the sealing plug shown in the cross section A-A of figure 18-1, the hollow elastic body is contracted under the negative pressure, and the ink containing space 18 formed by the inner hole wall of the ink containing pen rod and the outer surface of the hollow elastic body is enlarged; as shown in fig. 10-1 and 10-2, the ink adding pipe is provided with a threaded interface (52) connected with the ink containing pen rod and a threaded interface (53) connected with the clamp spring fixing cover, one end connected with the ink containing pen rod is provided with an inner hole (54) in clearance fit with the piston head, the inner hole diameter and the length are respectively greater than the outer diameter and the length of the piston head, the inner hole (55) is connected with the piston head and is in sliding seal with the piston head, and the ink adding pipe is also provided with an O-shaped ring matching position (56) and a sealing plug matching position (57); as shown in fig. 11, the ink adding piston is provided with a raised rib position (58) to avoid influencing the smoothness of an air passage when the ink adding piston has a dimension error, and is provided with a piston head (59), a piston rod (60) and a piston handle (61), wherein the cylindrical surface of the piston head is provided with an O-shaped ring accommodating groove (62), the piston rod is provided with a positioning clamping groove (63), and the piston handle is provided with a positioning boss (64) which is matched with a through hole arranged in the clamp spring fixing cover to play a radial positioning role; as shown in the top view of fig. 12-1 and fig. 12-2, the snap spring is provided with a mounting position (65), the snap spring is fixed between the ink adding pipe and the snap spring fixing cover by using the snap spring fixing cover, and is provided with a clamping position (66) matched with a positioning clamping groove arranged in the ink adding piston, and the snap spring is matched with the positioning clamping groove arranged in the ink adding piston to play a role in fixing the axial relative position of the ink adding piston and the ink adding pipe; as shown in fig. 13-1 and 13-3, the clamp spring fixing cover is provided with a threaded interface (67), a clamp spring mounting position (68), a through hole (69) and a ventilation groove (70); as shown in fig. 20, the ink adding tube, the ink containing pen holder, the hollow elastic body, the sealing plug, the ink adding piston, the O-ring and the clamp spring fixing cover, the piston head of the ink adding piston passes through a through hole (69) arranged on the clamp spring fixing cover, the O-ring is arranged in an O-ring mounting groove (62) arranged on the cylindrical surface of the piston head, the clamp spring is clamped into the piston rod, the piston head is arranged in an inner hole (55) arranged on the ink adding tube, the clamp spring is fixed between the ink adding rod and the clamp spring cover by connecting a threaded interface of the clamp spring fixing cover and a threaded interface of the ink adding tube, a clamping position arranged on the clamp spring is matched with a clamping groove arranged on the piston rod to provide an axial positioning clamping force, so that the ink adding piston can stay at a preset axial position corresponding to the ink adding tube, the piston head axially moves from a position in the middle of the inner hole in clearance fit between the piston head and the piston head arranged in the ink adding tube to a position, the ink adding piston is continuously pulled to enlarge the closed space, negative pressure can be generated in the closed space, the hollow elastic body contracts under the negative pressure, the ink containing space between the interior of the ink containing pen rod and the outer surface of the hollow elastic body is increased to generate negative pressure, ink can be sucked from the outside through an ink channel at the position where the pen point is placed to fill the ink containing space, the pen point, the O-shaped ring and the pen point cover are arranged to be matched with the ink containing pen rod to fix the pen point as shown in a D-D sectional view of figure 19-1, the pen point ball relatively seals the ink containing space and a channel of the outside, after the ink containing space is filled with the ink and sealed, the piston handle is pushed to enable the piston head to move to a position close to an inner hole which is in clearance fit with the piston head and is arranged in the ink adding pipe, the pressure can be generated on the hollow elastic body to indirectly compress the ink containing space, so that the pen point upwards presses the pen point to accelerate the discharge of air, if the pen point is blocked, a larger pressure is needed to flush the blockage, the clamp spring fixing cover can be unscrewed to completely pull out the ink adding piston to enable air to enter, then the ink adding piston is screwed on the clamp spring fixing cover and pushes the piston handle to enable the piston head to move to a position close to but not to a position, arranged in the ink adding pipe, of the inner hole in clearance fit with the piston head, so that a larger pressure is provided relative to the former, meanwhile, the pen point ball is pressed to try to flush the blockage, then the piston handle is continuously pushed to enable the piston head to move to the middle position, arranged in the ink adding pipe, of the inner hole in clearance fit with the piston head to form an air channel 17 communicated with the inside of the hollow elastic body and the atmosphere, at the moment, the pressure applied to the hollow elastic body disappears, and only the elastic force of the hollow elastic body maintaining; in another embodiment, a pogo pin valve type tip can be used as an alternative to the tip, as shown in the sectional view a-a of fig. 22-1, fig. 22-2, which comprises a tip housing 22, a pogo pin 23, the tip housing being provided with an ink passage (73), a tapered bore (74), as shown in the sectional view a-a of fig. 23-1, fig. 23-2, the pogo pin being provided with a section of spring (75) attached to a needle (76), a pogo pin portion (77) being a semi-spherical surface attached to a section of tapered cylindrical surface (78) fitting with the tapered bore of the tip housing, as shown in the sectional view a-a of fig. 22-1, fig. 22-2, the pogo pin portion (77) fitting with the semi-spherical surface protruding from the tip housing, the pushing force of the spring fitting the tapered cylindrical surface of the tip portion with the inner surface of, when the pen is used, the force during writing acts on the semi-spherical surface of the needle head part of the spring valve through a writing medium to retract the valve needle, so that the gap between the conical cylindrical surface of the needle head part and the conical hole of the pen point shell is enlarged to enable ink to flow out; as an alternative scheme of the pen point ball, compared with the common gel-ink pen, the ball-point pen and the ball-point pen, the pen point ball rolls to take out ink through the friction force on the surface of a writing medium to realize writing, the technical scheme is that the hollow elastic body provides pressure to realize writing, and the pen point ball only plays a role similar to a throttle valve, so that the pen point ball does not need a special process to manufacture, and the technical difficulty of manufacturing the pen point ball is reduced; the embodiments described in this specification may have different shapes, names, etc. of parts, and all equivalent or simple changes made according to the structures, features and principles conceived in this specification should be included in the scope of protection of the present invention, and those skilled in the art may make various modifications or additions to the described embodiments or substitute them in a similar manner, without departing from the structure of the present invention or exceeding the scope defined by the specification.

Claims (5)

1. A writing pen capable of being filled with ink is characterized in that: including pen clip, pen cap, nib lid, nib, spring thimble, hold black pen-holder, the department's of gripping soft plastid, cavity elastomer, sealed end cap, add the china ink pipe, add black piston, jump ring fixed cover, O type circle, gas circuit passageway, hold black space, the changeable enclosure space of volume, the pen clip is provided with combination complex buckle respectively with the pen cap and can combines together with the draw-in groove, and the pen clip all is provided with bellied strengthening rib with the pen cap and can cooperates the recess that the nib lid set up is used as the instrument of dismouting nib lid.

2. The inkeable writing pen of claim 1, wherein: the hollow elastic body is set to be in a hollow tubular shape with one end closed and the other end open, the open end is set to be capable of being filled with a sealing plug and is installed in the ink containing pen holder in a matching mode with the sealing plug, air in the hollow elastic body can be pumped out through a through hole formed in the sealing plug, the hollow elastic body can shrink under the action of negative pressure, and the hollow elastic body rebounds when the negative pressure disappears.

3. The inkeable writing pen of claim 1, wherein: the ink containing space is formed by installing a sealing plug into one end of an opening of a hollow tubular elastic body, installing the sealed end of the hollow elastic body into an inner hole of an ink containing pen rod forwards, supporting the hollow elastic body to be tightly pressed to a hollow elastic body sealing matching position arranged in the ink containing pen rod by the sealing plug installing and sealing position at one end provided with the sealing plug to seal, forming an ink containing space and an ink channel for supplying ink to a pen point ball between the inner hole wall of the ink containing pen rod, the outer surface of the hollow elastic body and the pen point, applying negative pressure to the inside of the hollow elastic body through a through hole arranged on the sealing plug, enabling the hollow elastic body to shrink under the negative pressure to enlarge the ink containing space to generate negative pressure, enabling the inside of the hollow elastic body to be communicated with the atmosphere to eliminate the negative pressure, and enabling the elastic force.

4. The inkeable writing pen of claim 1, wherein: the air channel and the closed space with variable volume are formed by connecting one end of an ink containing pen rod mounting sealing plug with an ink adding pipe matched with a hollow elastic body, a sealing plug, an ink adding piston, an O-shaped ring and a clamp spring fixing cover to form a space with variable volume or an air channel for communicating with the atmosphere by changing the relative axial position of the ink adding piston and the ink adding pipe, when the piston head is positioned in the middle of an inner hole which is arranged in the ink adding pipe and is in clearance fit with the piston head, the air channel for communicating with the inside of the hollow elastic body and the atmosphere is formed, the piston head axially moves from the position in the middle of the inner hole which is arranged in the ink adding pipe and is in clearance fit with the piston head to the position of a sliding sealing inner hole which is arranged in the ink adding pipe and is matched with the piston head by pulling a piston handle to form the closed space with variable volume, the inside can produce the negative pressure, and the cavity elastomer contracts after receiving the negative pressure, holds the black space increase and produce the negative pressure just can inhale the ink from the ink passageway that the nib was laid department between the inside of ink pen rod and the cavity elastomer surface, installs nib, nib lid and seals and hold black space after, promotes the piston handle and makes the piston head move and add the hole intermediate position that sets up in the black pipe and piston head clearance fit and form the gas circuit passageway that makes the inside and outside atmosphere of cavity elastomer switch on, then the negative pressure of exerting on the cavity elastomer disappears.

5. The inkeable writing pen of claim 1, wherein: the spring thimble exerts thrust to the nib ball along the ink flow direction, and the pressure that provides of cavity elastomer in inside and the thrust of spring thimble make the nib ball more inseparable with the bearing hole laminating of wrapping up the ball in the nib, under the non-state of writing, can be better under the circumstances that the nib ball does not receive external pressure stop the ink outflow, and the pressure when writing makes the nib ball receive reaction force at the writing medium, and make the ink outflow.

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