CN102848793B - Needle tubing spring pen point and ball-point pen cartridge comprising same - Google Patents
Needle tubing spring pen point and ball-point pen cartridge comprising same Download PDFInfo
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- CN102848793B CN102848793B CN201110421656.7A CN201110421656A CN102848793B CN 102848793 B CN102848793 B CN 102848793B CN 201110421656 A CN201110421656 A CN 201110421656A CN 102848793 B CN102848793 B CN 102848793B
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Abstract
The invention provides a needle tubing spring pen point. The needle tubing spring pen point comprises a cylindrical ball seat body, a ball and a spring, wherein one end of the ball seat body is provided with a ball seat; the other end of the ball seat body is provided with an opening and a lock part adjacent to the opening; the ball seat body also comprises an ink supply passage formed between the ball seat and the opening; the ball seat is provided with a central hole and a plurality of oil slots; the ball is arranged in the ball seat and is protruded from the ball seat; the spring is positioned in the ink supply passage and is made of stainless steel wires with the diameter of 0.08-0.1mm; the external diameter of the spring is 0.5-0.55mm; and the edge of the ball seat is bent and deformed towards the ball to receive balls, so that a radial gap and an axial gap are formed between the edge and the balls. The invention also provides a ball-point pen cartridge comprising the needle tubing spring pen point. By the needle tubing spring pen point, the whole spring can be placed in the pen point under the condition that the pen point is thinner and the inside space is smaller, and can be matched with ink with middle viscosity and thixotropy to achieve a better effect.
Description
Technical field
The present invention relates to the needle tube type spring pen head that a kind of ball pen uses and the ball pen that comprises this spring pen head.
Background technology
Existing ball pen comprises ink ball pen (middle ink ball pen, erasability ink ball pen), Neutral writing ink ball pen (erasability Neutral writing ink ball pen), water-base ink ball pen etc.
Wherein, the relative technology content of Neutral writing ink ball pen is higher, and technical difficulty is also larger, because that Neutral writing ink ball pen adopts is water base, middle viscosity, have thixotropic ink.Neutral writing ink ball pen is divided into again fixed and movable two kinds of structures, fixedly when not using, the pen cap can be covered to nib, and in the pen cap, has a rubber bead that written inner cone is partly sealed up, and ink can not volatilized dry.Air can not enter among the gap of ball and ball seat, guarantees that just write performance is good, long-term placement can ink leak or ink flow backwards; Movablely by pressing head, press inner movable device, make the pen core can be up and down, in the time of need to writing, nib be stretched out outside penholder, write in complete written retraction penholder, but, cannot as fixed, written chamfered section be divided and be sealed rubber bead of use, nib is exposed among air all the time.
So, people have just invented spring pen head, at a very little spring of the inner installation of nib, withstand ball, are equivalent to check valve, while not writing, rely on spring force to make the gap-closing between ball and ball seat mouth limit, reach the object that prevents that ink volatilization, air from entering; While writing, rely on and write pressure and be greater than spring force and the gap between ball and ball seat mouth limit is opened, ink can flow out normally to be write.
At present, the spring pen head on market is mainly that profile diameter is the bullet shape that 2.3mm, length are 11.5mm, the stainless steel wire spring that inner installation diameter is 0.12mm, and ball diameter is 0.5mm.For example, JP71096/1993 (CN94191080.6), JP349185/1995 (CN96193173.6), JP160441/1996 (CN97114976.3), KR8991/99 (CN99120346.1) etc. disclose similar spring pen head.
The space of nib inside is very little, spring pen head also will increase a spring and new function, no matter be to design at inner structure size, or machining accuracy aspect, and nib requires higher with the aspect of mating of ink, difficulty is larger, can be described as technical difficulty maximum in current all nibs.
Common needle tube type pen point adopts the stainless steel shaping pipe that external diameter is 0.8mm to process, and length is 6.5mm.In disclosed patent; patent of invention (the DE P3601676 that submits needle tube type pen point by a German in 1986 the earliest; be CN86105488); after several years, just by Japanese enterprises, improve perfect; form large-scale production; from Japan, Korea S, spread to China afterwards, adopt the Neutral writing ink ball pen of needle tube type pen point get consumer reception greatly and like, particularly student.
Through investigation, find, it is mainly that they generally like the writing that writes out thinner that students is liked the reason of needle tube type pen point, and the thickness of writing depends on the size of ball in fact, and the size of amount out of ink.But the very thin profile of nib has seemed to express intuitively and has represented that in other words the writing writing out can be thinner.In addition, needle tube type pen point is also favourable for reducing to blocking of sight line.Therefore, the Neutral writing ink ball pen of needle tube type pen point and the share of pen core on market rise year by year, have accounted for output approximately 40% left and right of whole Neutral writing ink ball pens and pen core.
Since needle tube type pen point is so welcome, for where, after coming out, do not have all the time can invention needle tube type spring pen head for ball spring nib, is because be to place any type of spring in internal diameter is only the needle tubing of 0.4～0.5mm again.In addition, needle tube type pen point is that the tubing of employing moulding cuts by nothing or few machining forms, the hardness of shaping pipe is higher than free cutting stainless steel wire rod, clearance control relative difficult when nib closes up between ball and ball seat mouth limit, and gap meeting is bigger than normal, and be unfavorable for making spring pen head.
In the prior art, for example KR8991/99 (CN99120346.1) had once proposed a kind of imagination, adopted common needle tube type pen point, and endoporus and oil groove with a spring wire straight, head-bent through needle tube type pen point, withstand ball; For example, described in JP335317/2001 (CN02148186.5), adopt common needle tube type pen point, in plastics connect, a spring is installed, the endoporus with a straight spring wire through needle tube type pen point, withstands ball.In a word, all there is a very fatal defect in above-mentioned these imaginations, and the spring wire length that root is straight must surpass 6.5mm, and diameter is only 0.15mm and following, and this be difficult to keep vertically and all the time in center.Add the rigging error that needle-tube pen-point is connected with plastics, such as both nonconcentricity and non-perpendicularities etc., therefore, cannot guarantee that spring wire that root is straight is at the center through withstanding on ball after needle tubing at all.If that root spring wire can not guarantee to withstand on ball center, not only cannot play the effect of check valve, may also can make ball secundly, it is monolateral that stitching is write in generation, writes the bad ball that even makes of feel and cannot rotate.
Summary of the invention
The object of this invention is to provide a kind of needle tube type spring pen head for ball pen, the in the situation that, inner space more very thin in written profile being less, whole spring can be placed on to nib inner, and make it with middle viscosity, there is thixotropic ink and mate the effect that reaches better.
In order to achieve the above object, the invention provides a kind of needle tube type spring pen head, comprising:
Cylindrical pellet pedestal, its one end is provided with ball seat, the other end is provided with the sticking department of opening and contiguous described opening, described ball seat body also comprises the ink supply path being formed between described ball seat and described opening, described ball seat has centre bore and a plurality of oil groove, one end of described oil groove is communicated with described ink supply path, and the other end is communicated with atmosphere;
Ball, it is interior and outwardly from described ball seat that it is arranged in described ball seat, and described ball can rotate in described ball seat, and can not come off;
Spring, it is positioned at described ink supply path, and one end of described spring is through described centre bore with the described ball of adjacency, and the other end is in abutting connection with described sticking department, and described spring adopts the stainless steel wire that diameter is 0.08～0.1mm to make, and the external diameter of spring is 0.5～0.55mm;
The edge of described ball seat towards described ball flexural deformation to contain described ball, make to be formed with radial clearance and end play between described edge and described ball, so that ink is through described ink supply path flow through described centre bore and described oil groove, and flow out from described radial clearance and end play, thereby write.
Wherein, described ball seat body adopts free cutting stainless steel wire rod by machining moulding.
Wherein, the main part that described spring has vertical component effect, abutting part and connects described vertical component effect and described abutting part, described vertical component effect is through described centre bore with the described ball of adjacency, and described abutting part coordinates to lock described spring with described sticking department.
Wherein, the length of the vertical component effect of described spring is 0.6～0.7mm.
Wherein, described spring adopts the stainless steel wire that diameter is 0.09mm to make.
Wherein, described ball seat has 3～5 oil grooves.
Wherein, described ink supply path narrows down gradually along the flow direction of ink.
Wherein, the spacing between the every circle of described spring is unequal.
Wherein, the spacing between the every circle of described spring diminishes gradually along the flow direction of ink, that is, and and from becoming gradually large near ball one end to the spacing between every circle of afterbody by little.
Wherein, the outer dia of described nib is 1.0mm, and total length is 6.5mm.
Wherein, the diameter of described ball is 0.4～0.5mm.
The present invention also provides a kind of ball pen that comprises described needle tube type spring pen head.Beneficial effect of the present invention:
1. because spring adopts the stainless steel wire that diameter is 0.08～0.1mm, make, the external diameter of spring is 0.5～0.55mm, and it is inner that it can be more very thin in written profile, inner space is placed on nib in the situation that of less;
2. ball seat body adopts free cutting stainless steel wire rod by machining moulding, is conducive to control the precision of fit dimension;
3. for unlikely place spring in ink supply path after, affect ink supply, utilize capillarity principle, unequal through calculating spring design the spacing that manufactures between every circle, and be that between every circle of spring, spacing diminishes gradually along the flow direction of ink, make spacing between the every circle of spring also become a part for ink supply path.
Accompanying drawing explanation
Fig. 1 is according to the profile of the needle tube type spring pen head of the first embodiment of the present invention;
Fig. 2 is the end play between the interior ball of nib and ball seat, the schematic diagram of radial clearance;
Fig. 3 is the perspective view according to spring of the present invention;
Fig. 4 is the schematic diagram of fixing spring;
Schematic diagram when Fig. 5 is spring promotion ball;
Fig. 6 is the schematic diagram that the spacing distance of the every circle of spring adopts non-equidistant design;
Fig. 7 is the schematic diagram of the static not flow regime of ink in the every circle of spring interval;
Fig. 8 is helical angle of spring schematic diagram;
Fig. 9 is the schematic diagram of nib when writing;
Figure 10 is the schematic diagram of interior three oil grooves of needle tube type pen point of solid wire rod machining;
Figure 11 is the schematic diagram of interior four oil grooves of needle tube type pen point of solid wire rod machining;
Figure 12 is the schematic diagram of interior five oil grooves of needle tube type pen point of solid wire rod machining;
Figure 13 is the schematic diagram that nib closes up and processes;
Figure 14 is the black pen core discharge curve figure out of ink of first embodiment of the present invention perfusion Neutral writing ink A;
Figure 15 is the pen core discharge curve figure out of ink of first embodiment of the present invention perfusion Neutral writing ink A indigo plant;
Figure 16 is the black pen core discharge curve figure out of ink of second embodiment of the present invention perfusion Neutral writing ink A;
Figure 17 is the pen core discharge curve figure out of ink of second embodiment of the present invention perfusion Neutral writing ink A indigo plant.
The specific embodiment
Describe with reference to the accompanying drawings the preferred embodiment according to needle tube type spring pen head of the present invention in detail.
Fig. 1-Fig. 5 shows the first embodiment of needle tube type spring pen head 100 of the present invention.In this embodiment, nib 100 is substantially cylindrical, and its diameter is about 1.0mm, and length is about 6.5mm, comprising: ball seat body 1, ball 2 and spring 3.
It is that the stainless steel wire of 0.08～0.1mm is made that spring 3 can adopt diameter, and spring outer diameter is only 0.5～0.55mm, is placed in nib smoothly guaranteeing.In the present embodiment, it is that the stainless steel wire of Φ 0.09mm processes that spring 3 can adopt diameter, comprises front end vertical component effect 32, intermediate host portion 31 and rear end abutting part 33.It is the cylindric of Φ 0.53mm that intermediate host portion 31 is coiled into external diameter, and its every circle spacing distance becomes large gradually from front end to afterbody by little.Front end vertical component effect 32 is one, and along the extended vertical steel wire of central axis, this steel wire is through centre bore 12 with in abutting connection with ball 2, and its length is 0.6～0.7mm, and to guarantee to withstand the center of ball 2, and spring force can be controlled in the critical field of anticipation.Rear end abutting part 33 is coiled into the disc-shaped that external diameter is Φ 0.65mm, and sticking department 5 tight fits on the inwall of the ink supply path 11 of itself and ball seat body 1, so that spring 3 is blocked, can not retreat or come off spring 3.Sticking department 5 can be to form like this: on the outer wall of ball seat body 1 afterbody, impact a plurality of concave points 9, make to protrude on the inwall of ink supply path 11, form sticking department 5.
As Figure 6-Figure 8, why to the spacing distance design of the every circle of spring be become non-equidistant, be because spring every circle spacing distance less (for example, below 0.15mm) in the situation that, middle viscosity (being generally 1000～3000mPas) in the every circle of spring interval, there is thixotropic ink, because its stickiness power is more than or equal to Action of Gravity Field with the effect of the adhesive force of spring wire surface and written ball seat body mesopore inwall in other words, even if it is mobile to ball direction that when writing, this part ink can not followed middle ink yet, in static not flow regime (seeing Fig. 7).Now, spring is equivalent to the pipeline that an internal diameter only has 0.3～0.35mm, similar to the center-hole diameter in nib.
Generally the centre bore length in nib is only 0.25～0.3mm left and right, after adding spring now, more than the length that is equivalent to centre bore is increased to 6mm by 0.25mm, increase by 24 times more than, the ink supply passage diameters of nib is by original 0.60mm in other words, be contracted to 0.30mm, 4 times of the area reducings of ink supply path, for middle viscosity, there is thixotropic Neutral writing ink, its mobile in nib will be subject to obvious impact, that is to say that written unit interval ink supply amount will reduce, ink supply speed in other words can reduce, directly cause written amount out of ink to reduce, when rapid writing, there will be the situation that stitching is thin out or even break.
If the every circle spacing distance of spring is widened, pitch angle alpha will also strengthens (seeing Fig. 8) thereupon, be equivalent to form a spiral passageway, Action of Gravity Field is greater than the effect of ink adhesive force, ink in the every circle of spring interval can be along with middle ink, along spiral passageway, flow to ball direction, make ink supply path obtain expansion.But, because the every circle spacing distance of spring widens, make spring force become large, the scope that is above standard easily causes ball to come off in the situation that being subject to certain impact power.Therefore, this kind of scheme is also inadvisable.
In addition, for can be at the inner spring of placing of nib, consumer to the prerequisite of the susceptibility minimum of the change of written appearance and size size under, suitably amplify written profile, written external diameter is controlled in 1.0～1.2mm.Preferably, written external diameter is 1.0mm, and total length is 6.5mm.
When spring 3 packs ball seat body 1 into, first front end vertical component effect 32 is inserted to the ink supply path 11 of ball seat body 1, and through centre bore 12, the center of withstanding ball 2.After spring 3 all packs the ink supply path 11 of ball seat body 1 into and is fixed, spring 3 is subject to a certain amount of compression, produce certain elastic force, thereby promotion ball 2 is close to the inner side at the oral area edge 131 of ball seat 13, make radial clearance 7 and end play 8 all closed, ink in nib just can not volatilize, dry up like this, and it is inner that outside air also cannot enter nib.
As shown in Figure 9, when nib is when writing, ball 2 is subject to writing the effect of pressure F, with respect to writing surface, can have a reaction force F ' to ball 2.When reaction force F ' is greater than spring force F, ball 2 can be drawn close the bottoms 132 along axis direction to ball seat 13, and radial clearance 7 and end play 8 between the inner side at oral area edge 131 of ball 2 and ball seat 13 are opened substantially.Ink passes ink supply path 11, flow through centre bore 12 and oil groove 6, and flow out radial clearance 7 and end play 8, thus write.
In the present embodiment, ball seat body 1 adopts free cutting stainless steel wire rod by machining moulding.For the processing of stainless steel shaping pipe, can be larger in the space aspect its ball seat internal structure design and change in size by machining moulding nib, oil groove quantity for example, shaping pipe processing is generally 3, be at most 4, and machining can be 3 (seeing Figure 10), 4 (seeing Figure 11) or 5 (seeing Figure 12) etc.
In addition, aspect the precision control of fit dimension, machining moulding is also more effective, because the wall thickness of stainless steel shaping pipe is below 0.15mm, its rigid phase is poorer than solid wire rod, if added, be subject to man-hour force unbalance can produce distortion to dodge, easily cause eccentric and monolateral.In addition, stainless steel shaping pipe is through repeatedly drawing processing, the hardness of material is higher than solid wire rod, when nib closes up processing (seeing Figure 13), the relative difficulty of wanting in uniformity control aspect of the elastic deformation amount on ball seat mouth limit and material elongation, easily cause the problems such as gap between ball and ball seat is bigger than normal, gap deviation is larger, and this spring pen head the key link place relatively just.
The first embodiment of the present invention, after manufacturing pen core, is carried out the detection of property indices, and result is as follows:
(1) amount out of ink
(1) normally write
Neutral writing ink A is black, viscosity 1885/597mPas, surface tension 28.6mN/m; Writing speed 4.5m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
Neutral writing ink A is blue, viscosity 1950/556mpas, surface tension 29mN/m; Writing speed 4.5m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
(2) rapid writing
Neutral writing ink A is black, viscosity 1885/597mPas, surface tension 28.6mN/m; Writing speed 9m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
Neutral writing ink A is blue, viscosity 1950/556mpas, surface tension 29mN/m; Writing speed 9m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
Above-mentioned data show normally to write with the amount fluctuation out of ink of rapid writing all in normal range (NR), amount mean value difference out of ink, and A is black is 2.77% (seeing Figure 14), A indigo plant is 3.95% (seeing Figure 15).
(2) intermittently write
Pressing standard-required is >=24 hours, and actual detection is 168 hours.
(3) resistance to impact
The China fir plate that 3cm is thick keeps flat on the ground, and sample pen is from 1 meter of height of China fir wood plate surface, with level, nib downwards, nib upwards three kinds of state freely falling bodies each once, do not occur that ball comes off, ink leak, write the abnormal conditions such as bad.
(4) write frictional force
Writing speed 4.5m/min, writes 85 ° ± 5 ° of angles, writes pressure 0.98N.
The black frictional force of writing of perfusion Neutral writing ink A is 0.3378N, and the frictional force of writing of perfusion Neutral writing ink A indigo plant is 0.3163N.
In the second embodiment of the present invention, structure and the structure shown in Fig. 1-Fig. 5 of needle tube type spring pen head are basic identical, so be not described in detail here, the difference of two embodiment is that the quantity of oil groove 6 is that the diameter of 5 and ball 2 is Φ 0.5mm.
The second embodiment of the present invention, after manufacturing pen core, is carried out the detection of property indices, and result is as follows:
(5) amount out of ink
(1) normally write
Neutral writing ink A is black, viscosity 1885/597mPas, surface tension 28.6mN/m; Writing speed 4.5m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
Neutral writing ink A is blue, viscosity 1950/556mPas, surface tension 29mN/m; Writing speed 4.5m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
(2) rapid writing
Neutral writing ink A is black, viscosity 1885/597mPas, surface tension 28.6mN/m; Writing speed 9m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
Neutral writing ink A is blue, viscosity 1950/556mpas, surface tension 29mN/m; Writing speed 9m/min, writes 65 ° ± 5 ° of angles, writes pressure 0.98N.
Above-mentioned data show normally to write with the amount fluctuation out of ink of rapid writing all in normal range (NR), amount mean value difference out of ink, and A is black is 9.2% (seeing Figure 16), A indigo plant is 5.67% (seeing Figure 17).
(6) intermittently write
Pressing standard-required is >=24 hours, and actual detection is 168 hours.
(7) resistance to impact
The China fir plate that 3cm is thick keeps flat on the ground, and sample pen is from 1 meter of height of China fir wood plate surface, with level, nib downwards, nib upwards three kinds of state freely falling bodies each once, do not occur that ball comes off, ink leak, write the abnormal conditions such as bad.
(8) write frictional force
Writing speed 4.5m/min, writes 85 ° ± 5 ° of angles, writes pressure 0.98N.
The black frictional force of writing of perfusion Neutral writing ink A is 0.3112N, and the frictional force of writing of perfusion Neutral writing ink A indigo plant is 0.2969N.
The present invention is more very thin in written profile, inner space is less in the situation that, whole spring can be placed on to nib inner, and make it with middle viscosity, there is thixotropic ink and mate the writing effect that reaches better.
Described in the present invention, concrete case study on implementation is only better case study on implementation of the present invention, is not used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, all belong to protection scope of the present invention.
Claims (10)
1. a needle tube type spring pen head, is characterized in that, comprising:
Cylindrical pellet pedestal (1), its one end is provided with ball seat (13), the other end is provided with the sticking department (5) of opening (4) and contiguous described opening (4), described ball seat body (1) also comprises the ink supply path (11) being formed between described ball seat (13) and described opening (4), described ball seat (13) has centre bore (12) and a plurality of oil groove (6), one end of described oil groove (6) is communicated with described ink supply path (11), and the other end is communicated with atmosphere;
Ball (2), it is interior and outwardly from described ball seat (13) that it is arranged in described ball seat (13), and described ball (2) can rotate in described ball seat (13), and can not come off;
Spring (3), it is positioned at described ink supply path (11), described centre bore (12) is passed with adjacency described ball (2) in one end of described spring (3), the other end is in abutting connection with described sticking department (5), described spring (3) adopts the stainless steel wire that diameter is 0.08～0.1mm to make, the external diameter of spring is 0.5～0.55mm, and wherein, the spacing between the every circle of described spring (3) diminishes gradually along the flow direction of ink;
The edge of described ball seat (13) towards described ball (2) flexural deformation to contain described ball (2), make to be formed with between described edge and described ball (2) radial clearance (7) and end play (8), so that ink is through described ink supply path (11) flow through described centre bore (12) and described oil groove (6), and flow out from described radial clearance (7) and end play (8), thereby write.
2. needle tube type spring pen head according to claim 1, is characterized in that, described ball seat body (1) adopts free cutting stainless steel wire rod by machining moulding.
3. needle tube type spring pen head according to claim 1 and 2, it is characterized in that, described spring (3) has vertical component effect (32), abutting part (33) and connects described vertical component effect (32) and the main part (31) of described abutting part (33), described vertical component effect (32) is through described centre bore (12) with adjacency described ball (2), and described abutting part (33) coordinates to lock described spring (3) with described sticking department (5).
4. needle tube type spring pen head according to claim 3, is characterized in that, the length of the vertical component effect (32) of described spring (3) is 0.6～0.7mm.
5. needle tube type spring pen head according to claim 1 and 2, is characterized in that, described spring (3) adopts the stainless steel wire that diameter is 0.09mm to make.
6. needle tube type spring pen head according to claim 1 and 2, is characterized in that, described ball seat (13) has 3～5 oil grooves (6).
7. needle tube type spring pen head according to claim 1 and 2, is characterized in that, described ink supply path (11) narrows down gradually along the flow direction of ink.
8. needle tube type spring pen head according to claim 1 and 2, is characterized in that, the outer dia of described nib is 1.0mm, and total length is 6.5mm.
9. needle tube type spring pen head according to claim 1 and 2, is characterized in that, the diameter of described ball (2) is 0.4～0.5mm.
10. a ball pen, is characterized in that, described pen core comprises according to the needle tube type spring pen head described in any one in claim 1 to 9.
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| CN201110421656.7A CN102848793B (en) | 2011-12-15 | 2011-12-15 | Needle tubing spring pen point and ball-point pen cartridge comprising same |
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| CN201110421656.7A CN102848793B (en) | 2011-12-15 | 2011-12-15 | Needle tubing spring pen point and ball-point pen cartridge comprising same |
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| CN103494708A (en) * | 2013-10-22 | 2014-01-08 | 孙杰 | Medicine physiotherapy massage comb |
| CN105584248A (en) * | 2016-03-15 | 2016-05-18 | 冯文达 | Elastic ballpoint pen cap |
| CN105751743A (en) * | 2016-05-12 | 2016-07-13 | 冯文达 | Elastic full-needle-tube ball pen head |
| CN110239256B (en) * | 2019-07-23 | 2024-04-12 | 上海晨光文具股份有限公司 | Ink leakage-proof spring pen point, ball pen refill and ball pen |
| CN112721494A (en) * | 2021-02-08 | 2021-04-30 | 上海晨光文具股份有限公司 | Needle tube type spring pen point and processing technology thereof |
| CN113857791A (en) * | 2021-10-26 | 2021-12-31 | 平阳县尚伟笔业有限公司 | Processing method of tubular double-ball pen point |
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| CN2420138Y (en) * | 2000-03-28 | 2001-02-21 | 株式会社寿 | Ball point type liquid container pen tip |
| JP4712983B2 (en) * | 2001-02-21 | 2011-06-29 | 株式会社パイロットコーポレーション | Ballpoint pen tip |
| CN200960786Y (en) * | 2006-05-30 | 2007-10-17 | 毛应仕 | Double-ball spring type neutral stainless steel ball pen point |
| JP2009101551A (en) * | 2007-10-22 | 2009-05-14 | Zebra Pen Corp | Needle type ball-point pen tip |
| CN201376405Y (en) * | 2009-03-20 | 2010-01-06 | 林大喜 | Stainless steel superfine full-needle tube elastic pen point |
| JP5508630B2 (en) * | 2010-04-30 | 2014-06-04 | パイロットインキ株式会社 | Ballpoint pen |
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