CN117565587A - Elastic writing pen - Google Patents

Abstract

The invention discloses an elastic writing pen, which comprises a pen core and a pen shell, wherein the pen core comprises an ink outlet core, an ink storage tube and a connecting seat, the pen shell comprises a pen holder and a supporting seat, a containing cavity is formed between the pen holder and the supporting seat, the pen core is arranged in the containing cavity, the connecting seat comprises a supporting column, the supporting column comprises a plurality of sections of cylinders which are axially connected, according to different wall thicknesses, the plurality of sections of cylinders can be at least divided into two parts, wherein the wall thickness of one part of the cylinders is larger than that of the other part of the cylinders, the axially adjacent cylinders are connected through plate members, a plurality of plate members positioned between the adjacent cylinders are arranged at intervals along the axial direction of the supporting column, the ink outlet core is arranged on the supporting column and is connected with the ink storage tube through inner holes of the supporting column, and the front end of the supporting seat comprises at least two elastic claw arms which are circumferentially and alternately arranged around the connecting seat. The elastic writing pen can improve the elastic deformation effect of the front end of the pen core.

Description

Elastic writing pen

Technical Field

The invention relates to an elastic writing pen.

Background

At present, the prior pens such as ball-point pens, gel-ink pens, sign pens and the like generally comprise a pen shell and a pen core arranged in the pen shell, wherein the pen core comprises a writing part positioned at the front end and an ink storage tube connected to the rear end of the writing part, the writing part generally comprises an ink outlet core and a connecting seat, the ink outlet core is connected with the ink storage tube through the connecting seat, and the connecting seat plays a role in supporting the ink outlet core and delivering ink. The texture of the connecting seat is usually harder, deformation is not easy to generate during writing, and the writing is harder. The pen shell comprises a containing cavity for containing the pen core, the front end of the pen shell comprises a conical supporting seat, the front end of the supporting seat is provided with a through hole for the front end of the connecting seat and the ink core to extend forwards, and the supporting seat has supporting and limiting functions on the connecting seat of the pen core.

The Chinese patent discloses an elastic pen refill (CN 201195441Y) which comprises a ball, a ball seat body, an ink tube and a connecting tube (namely a connecting seat) for connecting the ball seat body and the ink tube, wherein the connecting tube has elasticity, and can be made of various elastic materials such as rubber, cowhells and the like.

Therefore, the pen refill is matched with the elastic pen holder, the pen head ball can deviate from the central axis of the pen refill to a certain extent and elastically when writing, the contact friction between the pen head ball and paper becomes soft, so that the hand feeling of writing is more comfortable, the water outlet is smoother, the writing fatigue is relieved, and the structure is simple.

The above-mentioned patent provides a refill that has the connecting seat of making by elastic material, and its when writing, the connecting seat is based on writing pressure size and is correspondingly produced deformation, can improve the writing effect of pen. However, the material adopted by the connecting tube of the pen refill of the patent is greatly different from the material of the traditional connecting tube, so that the production process of the pen refill becomes more complex, and the production cost of the pen refill is increased.

In addition, the pen refill of the patent needs to be installed in the pen shell for use, the supporting seat of the traditional pen shell has larger limitation on deformation of the front end of the pen refill, and the deformation effect of the pen refill cannot be well reflected, particularly, a smaller space exists between the through hole at the front end of the pen shell and the connecting seat, the connecting seat at the front end of the pen refill can only deform within the range of the through hole, and the use effect of the pen refill is greatly limited.

Disclosure of Invention

The invention provides an elastic writing pen, wherein the front end of the elastic writing pen has better elasticity, can correspondingly generate deformation according to the change of writing force, and can improve the writing effect.

The invention discloses an elastic writing pen, which comprises a pen core and a pen shell, wherein the pen core comprises an ink outlet core, an ink storage tube and a connecting seat connected between the ink storage tube and the ink outlet core, the ink outlet core is used for being contacted with a paper surface for writing, the ink storage tube is used for storing ink, the connecting seat plays a role in supporting the ink outlet core and delivering the ink, the pen shell comprises a pen holder and a supporting seat connected with the front end of the pen holder, a containing cavity is formed between the pen holder and the supporting seat, the pen holder is mainly used for being held by hands and accommodating the ink storage tube part of the pen core, the supporting seat is mainly used for being matched with the connecting seat positioned at the front end of the pen core for supporting, the pen core is arranged in the containing cavity, the connecting seat comprises a supporting column, the supporting column is of a hollow tubular structure, the supporting column comprises a plurality of sections of axially connected columns, and the plurality of sections of axially connected columns can be at least divided into two parts according to different wall thicknesses, wherein the wall thickness of one part of the columns is larger than that of the other part of the columns, each part of the columns at least comprises one column, the axially adjacent columns are connected through flat plates, the peripheral edges of the plates are arranged in a protruding way relative to the outer peripheral surface of the support column, a plurality of plates positioned between the adjacent columns are arranged at intervals along the axial direction of the support column, the ink outlet core is arranged on the support column and is connected with the ink storage tube through an inner hole of the support column, the inner hole can be used as a conveying passage of the ink, the ink outlet core can also be used for penetrating and installing, the front end of the support seat comprises at least two elastic claw arms extending forwards, all the elastic claw arms are arranged around the connecting seat at intervals along the axial center of the pen and form lateral support fit with the connecting seat, a gap is arranged between the two circumferentially adjacent elastic claw arms, so that two adjacent elastic claw arms in the circumferential direction can not interfere with each other when in deformation, and the deformation effect of the elastic claw arms is improved.

The structure that the connecting seat adopts support column and a plurality of plate to combine together, produces deformation because the atress more easily when writing, and the support column has the effect of supporting to out the ink core when writing, the support column that comprises multistage axial connection's cylinder, and its when writing the atress, the cylinder that the wall thickness is less relatively produces deformation more easily than the cylinder that the wall thickness is great relatively, makes the connecting seat of refill rich certain writing elasticity, can produce corresponding deformation according to the change of writing power. Gaps between the plates arranged at a plurality of intervals are formed by abutting and matching adjacent plates when the support columns are deformed and bent to a certain extent, so that further deformation of the support columns can be limited, and breakage and damage of the connecting seat or the ink outlet core caused by excessive deformation and bending can be avoided. The connecting seat and the elastic claw arm form lateral supporting cooperation, when the connecting seat is deformed by writing pressure, the elastic claw arm which is matched with the connecting seat can also deform along with the connecting seat, so that the deformation effect of the integral front end of the pen can be improved by design, the elastic claw arm has a protective effect on the connecting seat, excessive deformation and bending of the connecting seat can be prevented, and the deformation reset effect of the connecting seat can also be improved.

Further, the elastic claw arms are divided into two groups, the two groups of elastic claw arms are distributed along the first radial direction of the axis of the pen, the two groups of elastic claw arms are arranged at intervals between the two corresponding sides in the circumferential direction of the two groups of elastic claw arms, deformation of the two groups of elastic claw arms is not interfered with each other, the two groups of elastic claw arms have different lengths, when writing is respectively carried out according to the two different directions in the first radial direction, the two groups of elastic claw arms can provide different supporting effects for the front end of the pen core, each group of elastic claw arms comprises two elastic claw arms with the same length, the two elastic claw arms of each group of elastic claw arms are distributed along the second radial direction of the axis of the pen, the first radial direction and the second radial direction are perpendicular, and the same deformation effects can be provided when writing is carried out in the two different directions in the second radial direction.

The plate comprises two end parts which correspond to the length direction and two side parts which correspond to the width direction, the support column is connected to the center of the plate, the end parts or the side parts of the plurality of plate parts are respectively and correspondingly arranged on the same side of the support column, the width direction of the plate part corresponds to the first radial direction, and the length direction of the plate part corresponds to the second radial direction.

By adopting the connecting seat with the structural design, when the connecting seat is used for writing in the length direction of the corresponding plate, the adjacent plates are easier to contact because of deformation relative to the writing in the width direction of the corresponding plate, so that the deformation effect of the connecting seat is weaker when the connecting seat is used for writing in the length direction of the corresponding plate and is weaker than that when the connecting seat is used for writing in the width direction of the corresponding plate. Through the corresponding cooperation with between the above-mentioned pen shell supporting seat structure for the front end of pen can produce different deformation effect when corresponding two different directions of first radial direction write the atress, can produce the same deformation effect when corresponding two different directions of second radial direction write, can produce the effect of writing of being similar to the pen, make the lines of writing more various, abundant, specially adapted writing typeface.

Because the conventional pen generally comprises a nib formed by processing a metal sheet, the metal sheet comprises a center seam extending to the front end of the nib, the center seam divides the front end of the nib into left and right halves, and ink is drained by utilizing capillary phenomenon, so that the nib can work normally. The pen point of the pen is different in hand feeling and writing effect when writing in different directions, the pen point of the pen is relatively soft when writing in the front-back direction of the corresponding metal sheet, deformation is easy to generate, the written line is thicker, the pen point of the pen is relatively hard when writing in the side direction of the corresponding metal sheet, deformation is difficult to generate, and the written line is thinner. Based on the characteristics of the pen, the pen can write lines in various and rich postures compared with other types of pens, and is particularly suitable for writing fonts which are beautiful for suppressing the pause. The deformation effects of the pen cores in the prior art are the same when writing is performed in different directions, and the writing effects similar to those of pens cannot be generated.

In the invention, the distance between the front end of the relatively longer group of elastic claw arms and the front end of the pen core is closer, so that a better supporting effect can be provided, the front end of the pen is relatively difficult to deform when writing in the direction corresponding to the supporting stress of the group of elastic claw arms, the distance between the front end of the relatively shorter group of elastic claw arms and the front end of the pen core is relatively longer, the supporting effect is relatively weaker, the front end of the pen is relatively easier to deform when writing in the direction corresponding to the supporting stress of the group of elastic claw arms, and the pen can produce a writing effect similar to that of a pen when writing, and can write lines similar to that of the pen. In addition, the user can obviously observe that the lengths of the two groups of elastic claw arms are different, so that the user can conveniently recognize the writing direction.

Further, a positioning structure for forming circumferential positioning fit is arranged between the pen shell and the pen refill. Through the locating structure, the pen shell and the pen core form circumferential locating fit, so that the orientation of the pen core and the pen shell can be in corresponding positions, relative rotation between the pen shell and the pen core in the writing process is avoided, and the writing effect of the pen is more stable.

Further, the location structure is including setting up the annular convex wall at the supporting seat inboard, and annular convex wall is including the hole that wears to establish with the refill cooperation, correspond the annular terminal surface that the pen-holder rear set up, has seted up the location spout that is connected with the hole on the annular convex wall, and the axial extension setting of pen-holder is followed to the location spout, and the front end of location spout is the closed setting, sets up the inserted hole that is connected with the rear end of location spout on the annular terminal surface of annular convex wall, the hookup seat is including connecting the retaining ring at the support column rear end, connecting the grafting portion at the retaining ring rear end, grafting portion and the cooperation grafting of ink storage pipe, the retaining ring is spacing with the cooperation of ink storage pipe front end, be provided with the location arch of grafting with the cooperation of location spout on the retaining ring. The pen core is inserted in the pen shell along the axial in the location spout of accessible inserted hole on the pen core, and through the both sides inner wall and the protruding cooperation spacing of location spout, prevent that the pen core from producing the rotation relative to the pen shell, location simple structure, simple to operate.

Further, the annular end surface of the annular convex wall is obliquely arranged, and the insertion opening is positioned at the position closest to the front of the pen shell on the annular end surface of the annular convex wall. The annular end face is obliquely arranged, so that the positioning protrusion on the pen core can be guided to be inserted into the insertion port when the pen core is axially inserted into the pen shell, and the pen is convenient to install.

Further, the elastic claw arm is obliquely arranged, and the distance between the front end of the elastic claw arm and the axis of the pen is smaller than that between the rear end of the elastic claw arm and the axis of the pen. The front end of the elastic claw arm is abutted against the connecting seat, so that the supporting effect of the elastic claw arm on the front end of the pen core can be improved. And the elastic claw arm which is obliquely arranged can also improve the writing inclination angle of the pen, so that the pen is not easy to interfere with paper surface during writing.

Further, according to the axial position and the length difference of the support column where the plate is located, the outer contours of the plurality of plates are matched to form a conical structure. The design of toper structure can improve the support cooperation effect with the supporting seat, improves the cooperation installation effect of connecting seat and supporting seat.

Further, according to the difference of the axial positions of the support columns where the plates are located, the plates are divided into a front part and a rear part, grooves which are in matched contact with the front parts of the plates are formed in the inner sides of the front ends of the elastic claw arms, the lengths of the front parts of the plates are the same, and the lengths of the rear parts of the plates are distributed in a decreasing mode towards the front end direction of the pen core.

In another alternative, the lengths of the front part plate and the rear part plate are arranged in a decreasing distribution toward the front end of the pen core, but the decreasing degree of the length of the front part plate is smaller than that of the rear part plate.

The front part plate is narrower than the rear part plate, so that the supporting and matching effect of the elastic claw arms can be improved, the front part of the connecting seat can deform to a greater degree relative to the rear part, and the thickness of writing lines can change more obviously when writing force changes.

Further, the wall thickness of the two sides of the cylinder along the first radial direction of the axis is smaller than the wall thickness of the two sides of the cylinder along the second radial direction of the axis, and the first radial direction and the second radial direction are mutually perpendicular. This makes the barrel more deformable when subjected to writing pressure from a first radial direction than when subjected to writing pressure from a second radial direction. This results in the coupling seat having a stronger deformation effect when writing a force in the corresponding first radial direction than when writing a force in the corresponding second radial direction. The pen lead can generate different deformation effects when being stressed in writing in different directions corresponding to the connecting seat, can generate writing effects similar to a pen, ensures that written lines are more various and rich, and is particularly suitable for writing fonts. And by cooperating with the support of the two groups of elastic claw arms, the effect can be further improved.

Further, the wall thickness of the columns of different parts is gradually and frontally arranged in a smaller distribution along the axial direction of the support column. The front part of the support column can deform to a greater extent relative to the rear part, so that the thickness of a writing line can change more obviously when the writing force changes.

The beneficial effects of the invention are as follows: the pen disclosed by the invention can generate a better elastic deformation effect when being stressed during writing, the connecting seat is not easy to break and damage during writing, has better writing handfeel, can improve the attractiveness of writing lines, has lower material requirements on the connecting seat, can be made of the same material and manufacturing process (injection molding process) as those of the connecting seat of a traditional pen refill, can reduce the manufacturing cost, is supported by matching the elastic claw arm arranged at the front end of the supporting seat with the connecting seat at the front end of the pen refill, can drive the elastic claw arm matched with the supporting seat to correspondingly deform when being stressed and deformed during writing, can also give an elastic force for assisting the deformation and resetting of the pen refill connecting seat, can better embody the elastic deformation effect of the pen refill connecting seat, improves the writing handfeel, and ensures that the thickness of the writing lines changes obviously along with the change of the writing force. In addition, in a further refined scheme, the pen refill provided by the invention can simulate the writing effect of a pen.

Drawings

FIG. 1 is a block diagram of a portion of an embodiment of the present invention;

FIG. 2 is a front view of a portion of an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a side view of a portion of an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a cross-sectional view of the pen housing according to the embodiment of the present invention taken along line 4B-B;

FIG. 7 is a view showing the construction of a part of a cartridge according to an embodiment of the present invention;

fig. 8 is a front view of a cartridge according to an embodiment of the present invention;

fig. 9 is a top view of a cartridge according to an embodiment of the present invention;

FIG. 10 is a top view of an embodiment of the present invention;

FIG. 11 is a view showing a structure of a part of a cartridge according to another embodiment of the present invention;

fig. 12 is a sectional view of a cartridge according to another embodiment of the present invention.

Detailed Description

The embodiment of the elastic writing pen disclosed by the invention is shown in fig. 1-10, and has a specific structure, wherein the elastic writing pen comprises a pen core and a pen shell, the pen core comprises an ink outlet core 11, an ink storage tube 12 and a connecting seat 13 connected between the ink storage tube 12 and the ink outlet core 11, the ink outlet core 11 is used for being contacted with a paper surface for writing, the ink storage tube 12 is used for storing ink, the connecting seat 13 plays a role of supporting the ink outlet core 11 and conveying the ink, the pen shell comprises a pen holder 21 and a supporting seat 22 connected to the front end of the pen holder 21, a containing cavity 23 is formed between the pen holder 21 and the supporting seat 22, the pen holder 21 is mainly used for holding hands and containing ink storage tube 12 parts of the pen core, the supporting seat 22 is mainly used for being matched with the connecting seat 13 positioned at the front end of the pen core, the pen core is arranged in the containing cavity 23, the connecting seat 13 comprises a supporting column 131, the supporting column 131 is of a hollow tubular structure, the supporting column 131 comprises a plurality of sections of columns 1311, the columns 1311 which are axially connected in a plurality of sections at least two sections according to different wall thickness, each section 1311 comprises at least one column 1311 with a larger wall thickness 1311. The support column 131 has the function of supporting the ink core 11 during writing, and the support column 131 formed by the multiple sections of axially connected columns 1311 is easier to deform when the column 1311 with relatively smaller wall thickness is stressed during writing than the column 1311 with relatively larger wall thickness, so that the connecting seat 13 of the pen core has certain writing elasticity and can generate corresponding deformation according to the change of writing force.

The wall thickness of the two sides of the cylinder 1311 along the first radial direction of the axis of the pen is smaller than the wall thickness of the two sides of the cylinder 1311 along the second radial direction of the axis, and the first radial direction and the second radial direction are mutually perpendicular. This makes cylinder 1311 more susceptible to deformation when subjected to writing pressure from a first radial direction than when subjected to writing pressure from a second radial direction. This makes the coupling seat 13 weaker in its deformation effect when writing a force in the corresponding first radial direction than when writing a force in the corresponding second radial direction. The pen lead can generate different deformation effects when being stressed in writing in different directions corresponding to the connecting seat 13, can generate writing effects similar to a pen, ensures that written lines are more various and rich, and is particularly suitable for writing fonts. The outer profile of the column 1311 is preferably elliptical, two ends of the ellipse are disposed corresponding to the second radial direction, and the inner hole profile of the column 311 is circular.

The wall thickness of the columns 1311 of the different portions is arranged in a gradually decreasing distribution forward in the axial direction of the support column 131. This allows the front portion of the support post 131 to deform to a greater extent than the rear portion, and allows the thickness of the writing line to change more significantly as the writing force changes. In other embodiments, the columns 1311 of the portion with relatively smaller thickness may be disposed at the rear or middle position of the support column 131, so that the columns 1311 of the portion with relatively larger thickness may be disposed in front of or behind the columns 1311 of the portion with smaller thickness, and thus, the specific portion of the support column 131 may be more easily deformed during writing.

The axially adjacent columns 1311 are connected through flat plate members 132, the peripheral edges of the plate members 132 are arranged in a protruding manner relative to the outer peripheral surface of the supporting column 131, a plurality of plate members positioned between the adjacent columns 1311 are arranged along the axial direction of the supporting column 131 at intervals, the ink outlet cores 11 are arranged on the supporting column 131 and establish ink conveying connection with the ink storage tube 12 through inner holes of the supporting column 131, the inner holes can be used as ink conveying channels and can also be used for penetrating and installing the ink outlet cores 11, the front end of the supporting seat 22 comprises at least two elastic claw arms 221 extending forwards, all the elastic claw arms 221 are arranged around the connecting seat 13 along the axial circumferential interval of the pen and form lateral supporting cooperation with the connecting seat 13, gaps 222 are formed between the two circumferentially adjacent elastic claw arms 221, so that the two circumferentially adjacent elastic claw arms 221 cannot interfere with each other during deformation, and the deformation effect of the elastic claw arms 221 is improved.

The structure that the connecting seat 13 adopts support column 131, a plurality of plate 132 to combine together, produces deformation because the atress more easily when writing, and the clearance between the plate 132 that a plurality of intervals set up can improve the deformation effect of connecting seat 13, improves the feel when writing to when deformation bending to a certain extent, can the butt fit together between the adjacent plate 132, thereby can restrict the further deformation that produces of connecting seat 13, can avoid the fracture damage that causes connecting seat 13 or play black core 11 because of excessive deformation bending. The connecting seat 13 and the elastic claw arm 221 form lateral supporting cooperation, when the connecting seat 13 is deformed by writing pressure, the elastic claw arm 221 which is matched with the connecting seat 13 can also be deformed along with the connecting seat, so that the deformation effect of the whole front end of the pen can be improved by design, the elastic claw arm 221 has a protective effect on the connecting seat 13, excessive deformation and bending of the connecting seat 13 can be prevented, and the deformation reset effect of the connecting seat 13 can be improved.

As shown in fig. 3 to 6 and fig. 10, the number of the elastic claw arms 221 is four, and the two groups of elastic claw arms 221 are divided into two groups, each group of elastic claw arms 221 includes two elastic claw arms 221, the two groups of elastic claw arms (221 a,221 b) are distributed along the first radial direction of the axis of the pen, the two groups of elastic claw arms (221 a,221 b) are arranged at intervals between the two corresponding sides in the circumferential direction, that is, gaps 222 are also formed between the two corresponding sides in the circumferential direction of the two groups of elastic claw arms (221 a,221 b), so that the deformation of the two groups of elastic claw arms 221 is not interfered with each other, the two groups of elastic claw arms 221 have different lengths, the length of the elastic claw arm labeled 221a is longer than that of the elastic claw arm labeled 221b, the front end of the elastic claw arm 221a with a longer length is more protruded forward relative to the front end of the elastic claw arm 221b, and the pen can provide different pen refill supporting effects for the front ends based on the difference in the lengths of the elastic claw arms 221a different directions in the first radial direction. Each group of two elastic claw arms 221 comprises two elastic claw arms with the same length, the two elastic claw arms of the two groups of elastic claw arms are distributed along the second radial direction of the axis of the pen, the first radial direction is perpendicular to the second radial direction, and the same deformation effect can be provided when writing is carried out along two different directions along the second radial direction.

The plate 132 includes two ends corresponding to the length direction and two sides corresponding to the width direction, the support column 131 is connected at the center of the plate 132, the ends 1321 or the sides 1322 of the plurality of plates 132 are all correspondingly disposed on the same side of the support column 131, the width direction of the plate 132 is corresponding to the first radial direction, and the length direction of the plate 132 is corresponding to the second radial direction.

With the above structural design of the connecting seat 13, when writing in the length direction of the corresponding plate 132, compared with writing in the width direction of the corresponding plate 132, the adjacent plates 132 are easier to contact due to deformation, so that the deformation effect of the connecting seat 13 when writing in the length direction of the corresponding plate 132 is weaker than that when writing in the width direction of the corresponding plate 132. Through the corresponding cooperation with the above-mentioned pen shell supporting seat 22 structure for the front end of pen can produce different deformation effect when corresponding two different directions of first radial direction write the atress, can produce the same deformation effect when corresponding two different directions of second radial direction write, can produce the effect of writing of similar to the pen, make the lines of writing more various, abundant, specially adapted writing typeface.

The distance between the front end of the relatively longer set of elastic claw arms 221a and the front end of the pen core (i.e. the front end of the ink outlet core 11) is closer, so that a better supporting effect can be provided, the front end of the pen is relatively difficult to deform when writing in the direction of supporting and stressing the set of elastic claw arms 221a, the distance between the front end of the relatively shorter set of elastic claw arms 221b and the front end of the pen core is relatively longer, the supporting effect is relatively weaker, and the front end of the pen is relatively easier to deform when writing in the direction of supporting and stressing the set of elastic claw arms 221b, so that the pen can produce a writing effect similar to that of a pen and can write lines similar to that written by the pen. In addition, the user can obviously observe that the lengths of the two groups of elastic claw arms 221 are different, so that the user can conveniently recognize the writing direction.

A positioning structure for forming circumferential positioning fit is arranged between the pen shell and the pen refill. Through the locating structure, the pen shell and the pen core form circumferential locating fit, so that the orientation of the pen core and the pen shell can be in corresponding positions, relative rotation between the pen shell and the pen core in the writing process is avoided, and the writing effect of the pen is more stable.

The positioning structure comprises an annular convex wall 211 integrally formed on the inner side of the supporting seat 22, the annular convex wall 211 comprises an inner hole 212 which is penetrated through by matching with a pen core and an annular end face 213 which is arranged corresponding to the rear of the pen holder 21, a positioning sliding groove 214 connected with the inner hole is formed in the annular convex wall 211, the positioning sliding groove 214 extends along the axial direction of the pen holder 21, the front end of the positioning sliding groove 214 is in a closed arrangement, an inserting opening which is connected with the rear end of the positioning sliding groove 214 is formed in the annular end face 213 of the annular convex wall 211, the connecting seat 13 comprises a retainer ring 133 which is connected with the rear end of the supporting column 131 and an inserting portion 134 which is connected with the rear end of the retainer ring 133, the inserting portion 134 is inserted into the ink storage tube 12 in a matched manner, the retainer ring 133 is limited by matching with the front end of the ink storage tube 12, and a positioning protrusion 1331 which is inserted into the positioning sliding groove 214 in a matched manner is formed in the retainer ring 133. The positioning protrusions 1331 on the pen core can be inserted into the positioning sliding groove 214 through the insertion opening when the pen core is axially inserted into the pen shell, the pen core is prevented from rotating relative to the pen shell through the fact that the inner walls of the two sides of the positioning sliding groove 214 are matched with the positioning protrusions 1331 to limit the position, the positioning structure is simple, and the installation is convenient.

The annular end face 213 of the annular convex wall 211 is obliquely arranged, and the insertion opening is positioned at the position closest to the front of the pen shell on the annular end face 213 of the annular convex wall 211. The inclined annular end surface 213 can guide and insert the positioning protrusion 1331 on the pen core into the insertion port when the pen core is axially inserted into the pen shell, so that the pen is convenient to install.

The elastic claw arm 221 is inclined, and the distance between the front end of the elastic claw arm 221 and the axis of the pen is smaller than that between the rear end of the elastic claw arm 221 and the axis of the pen. The front end of the elastic claw arm 221 is abutted against the coupling seat 13, so that the supporting effect of the elastic claw arm 221 on the front end of the pen core can be improved. The inclined elastic claw arm 221 can also improve the writing inclination angle of the pen, and is not easy to interfere with the paper surface during writing.

As shown in fig. 7 to 10, the outer contours of the plurality of plates 132 are matched in a tapered structure according to the axial positions and lengths of the support columns 131 where the plates 132 are located. The design of toper structure can improve the support cooperation effect with supporting seat 22, improves the cooperation installation effect of connecting seat 13 and supporting seat 22. The end 1321 of the plate 132 has an arcuate end face, and the end face of the plate 132 has a taper.

According to the difference of the axial positions of the supporting columns 131 where the plate 132 is located, the plurality of plate 132 are divided into a front portion 132a and a rear portion 132b, the inner side of the front end of the elastic claw arm 221 is provided with grooves 2211 which are in fit contact with the front portions 132a of the plurality of plate 132, the lengths of the front portion plate 132 are the same, and the lengths of the rear portion plate 132b are distributed in a decreasing manner towards the front end direction of the pen core.

In other embodiments, the lengths of the front part plate 132 and the rear part plate 132 may be distributed in a decreasing manner toward the front end of the pen core, but the decreasing degree of the length of the front part plate 132 is smaller than the decreasing degree of the length of the rear part plate 132.

The front plate 132 is narrower than the rear plate 132, and can improve the support engagement effect with the elastic claw arm 221, and can also deform the front portion of the coupling seat 13 to a greater extent with respect to the rear portion, so that the thickness of the writing line can be changed more significantly when the writing force is changed.

By adopting the scheme, the front part of the connecting seat 13 can generate larger deformation relative to the rear part, and when writing force changes, the thickness of writing lines can generate more obvious change.

In this embodiment, as shown in fig. 3 and 5, the ink outlet core 11 is a micro-hole core made of plastic material, the front end of the micro-hole core extends forward from the front end of the connecting seat 13 and is used for being matched with paper for writing, the rear end of the connecting seat 13 is provided with a rear plug hole 135, the ink storage tube 12 is provided with an ink delivery core 14, the front end of the ink delivery core 14 is inserted into the rear plug hole 135, the rear end of the micro-hole core is inserted into the rear plug hole 135 and is in plug fit with the ink delivery core 14, and the micro-hole core made of plastic material has a certain elasticity and can also deform together with the connecting seat 13 when being stressed during writing, so that the deformation effect of the front end of the pen core can be improved.

In another embodiment of the present invention, as shown in fig. 11 and 12, the front end of the coupling seat 13 is provided with a front insertion hole 136, the ink outlet core 11 includes a ball 111 and a mounting seat 112, the mounting seat 112 is inserted and fixed in the front insertion hole 136, the ball 111 is rolling-mounted on the mounting seat 112, and in order to ensure reliable operation of the ball, the mounting seat 112 is generally made of a hard metal material, and is inserted and fixed at the front end of the coupling seat 13, so that deformation of the coupling seat 13 is not easily affected. The mount pad 112 is including the inking passageway that is connected with the hole of support column 131, and the rear end of the hole of support column 131 is connected with ink storage pipe 12, and during writing, the ink in the ink storage pipe 12 is carried ball 111 department through the hole of support column 131, the inking passageway of mount pad 112 in proper order, and ball 111 rolls and sets up on the mount pad 112, can produce the roll when writing, and then can export the ink to the paper, forms the handwriting of writing.

Further, in another embodiment of the present invention, a support rib 137 is provided between the ends of the plurality of adjacently disposed plate members 132 located at the axial rear portion of the support column 131, the support rib 137 being disposed in the gap of the adjacent plate members 132. The setting of the support rib 137 can restrict the deformation of a plurality of plates 132 of relevant position when writing the atress and draw close, weakens the deformation effect of connecting seat 13 rear portion in corresponding plate 132 length direction, improves and writes the feel.

The above embodiment is only one of the preferred embodiments of the present invention, and common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the scope of the present invention.

Claims (10)

1. The utility model provides an elasticity writing pen, includes refill, pen shell, and the refill is including going out black core, ink storage tube, connect the connecting seat between ink storage tube and play black core, and the pen shell is including the pen-holder, connect in the supporting seat of pen-holder front end, is formed with the appearance chamber between pen-holder and the supporting seat, the refill sets up in holding chamber, its characterized in that: the connecting seat comprises a supporting column, the supporting column is of a hollow tubular structure, the supporting column comprises a plurality of sections of columns which are axially connected, the columns which are axially connected in a multi-section mode can be at least divided into two parts according to different wall thicknesses, the wall thickness of one part of the columns is larger than that of the other part of the columns, the adjacent columns are connected through flat plates, the peripheral edges of the plates are arranged in a protruding mode relative to the outer peripheral surface of the supporting column, a plurality of plates between the adjacent columns are arranged in an axially spaced mode along the supporting column, ink outlet cores are arranged on the supporting column and are connected with an ink storage tube through inner holes of the supporting column, the front end of the supporting seat comprises at least two elastic claw arms which extend forwards, and all the elastic claw arms are arranged around the connecting seat in a circumferentially spaced mode along the axis of a pen and form lateral supporting cooperation with the connecting seat.

2. The flexible stylus of claim 1, wherein: the elastic claw arms are divided into two groups, the two groups of elastic claw arms are distributed along the first radial direction of the axis of the pen, the two groups of elastic claw arms have different lengths, each group of elastic claw arms comprises two elastic claw arms with the same length, the two elastic claw arms of each group of elastic claw arms are distributed along the second radial direction of the axis of the pen, the first radial direction and the second radial direction are perpendicular, the plate comprises two end parts corresponding to the length direction and two side parts corresponding to the width direction, the support column is connected to the center of the plate, the end parts or the side parts of the plurality of plate parts are all correspondingly arranged on the same side of the support column, the width direction of the plate part is correspondingly arranged in the first radial direction, and the length direction of the plate part is correspondingly arranged in the second radial direction.

3. The flexible stylus of claim 2, wherein: a positioning structure for forming circumferential positioning fit is arranged between the pen shell and the pen refill.

4. A flexible stylus according to claim 3, wherein: the positioning structure comprises an annular convex wall arranged on the inner side of the supporting seat, the annular convex wall comprises an inner hole which is matched with the pen core to be penetrated, and an annular end face which is arranged corresponding to the rear of the pen holder, a positioning chute which is connected with the inner hole is arranged on the annular convex wall, the positioning chute extends along the axial direction of the pen holder, the front end of the positioning chute is in a closed arrangement, an inserting opening which is connected with the rear end of the positioning chute is arranged on the annular end face of the annular convex wall, the connecting seat comprises a retaining ring which is connected with the rear end of the supporting column, and an inserting portion which is connected with the rear end of the retaining ring, the inserting portion is matched and inserted with the ink storage tube, the retaining ring is matched and limited with the front end of the ink storage tube, and a positioning protrusion which is matched and inserted with the positioning chute is arranged on the retaining ring.

5. The flexible stylus of claim 4, wherein: the annular end surface of the annular convex wall is obliquely arranged, and the insertion opening is positioned at the position, closest to the front of the pen shell, of the annular end surface of the annular convex wall.

6. The flexible stylus of claim 1, wherein: the elastic claw arm is obliquely arranged, and the distance between the front end of the elastic claw arm and the axis of the pen is smaller than that between the rear end of the elastic claw arm and the axis of the pen.

7. The flexible stylus of claim 6, wherein: according to the axial position and the length difference of the support column where the plate is located, the outer contours of the plurality of plates are matched to form a conical structure.

8. The flexible stylus of claim 7, wherein: according to the difference of the axial positions of the support columns where the plates are positioned, the plates are divided into a front part and a rear part, the inner sides of the front ends of the elastic claw arms are provided with grooves which are in matched contact with the front parts of the plates, the lengths of the front parts of the plates are the same, and the lengths of the rear parts of the plates are distributed in a decreasing manner towards the front end direction of the pen core; or the lengths of the front part plate and the rear part plate are distributed in a decreasing way towards the front end direction of the pen core, but the decreasing degree of the length of the front part plate is smaller than that of the rear part plate.

9. The flexible writing pen of claim 1 or 2, wherein: the wall thickness of two sides of the cylinder along the first radial direction of the axis of the pen is smaller than the wall thickness of two sides of the cylinder along the second radial direction of the axis of the pen, and the first radial direction and the second radial direction are mutually perpendicular.

10. The flexible stylus of claim 9, wherein: the wall thickness of the columns of different parts is gradually reduced and distributed along the axial direction of the support column.