CN215552127U - Double-ball spring pen point - Google Patents
Double-ball spring pen point Download PDFInfo
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- CN215552127U CN215552127U CN202122199373.4U CN202122199373U CN215552127U CN 215552127 U CN215552127 U CN 215552127U CN 202122199373 U CN202122199373 U CN 202122199373U CN 215552127 U CN215552127 U CN 215552127U
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- 239000000976 ink Substances 0.000 claims description 14
- 239000011324 bead Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to a double-ball spring pen point, which comprises a main body, wherein the main body is tubular and is provided with a tube hole, a first ball, a second ball and a spring are sequentially arranged in the tube hole from front to back, the front end of the tube hole is provided with a ball support for the first ball to rotate, the first ball is partially exposed out of a port at the front end of the tube hole, the rear end of the spring is limited in the tube hole, and the front end of the spring is abutted against the first ball, and the double-ball spring pen point is characterized in that: the main part lateral wall includes the first portion, the second portion, third portion and the fourth portion that set gradually from preceding back, and first portion is relative and the diameter increases gradually from preceding back with the pearl support, and the second portion is relative and the diameter remains unchanged with the second ball, and third portion diameter increases gradually from preceding back, and fourth portion diameter remains unchanged, and the diameter of second portion is 0.85~0.9mm, and the diameter of fourth portion is 1.25~1.35 mm. By adopting the scheme, the utility model provides the double-ball spring pen point which is long in service life, beneficial to students to learn and write and good in leak resistance.
Description
Technical Field
The utility model relates to the field of pen points, in particular to a double-ball spring pen point.
Background
The single-ball spring pen point comprises a main body, wherein the main body is tubular and is provided with a pipe hole, a ball and a spring are arranged in the pipe hole, a ball support for rotating the ball is arranged at the front end of the pipe hole, part of the ball is exposed out of a port at the front end of the pipe hole, the rear end of the spring is limited in the pipe hole, a thimble extending into the ball support and abutting against the ball is arranged at the front end, the ball is extruded when the pen point contacts paper and writes, ink flows out from the port, the ball seals the port under the action of the thimble when the pen point is far away from the paper, the ink stops flowing out, although the structure can realize that the ink cannot flow out during writing pause, if the section of the thimble at the end part of the spring has sharp-edged burrs, the plane is uneven, the centre of the thimble is irregular, the ball in the ball seat body is influenced to roll, the writing hand feeling and the sealing performance of the pen point to the ink are influenced, and the centre of the thimble can deviate during writing process due to the lack of the rigidity of the thimble, affecting the hand feel of writing and possibly losing the anti-leakage property.
In order to solve the problems, the thimble structure of the spring is changed, and the thimble structure is replaced by another ball which is propped between the ball and the spring, namely the double-ball spring pen point, so that the problems of the center being not correct and the center of the spring deviating in the writing process are solved.
But above-mentioned structure still has certain problem, two pearl spring nib appearance are bullet shape promptly, maximum diameter department is 2.3mm, the ball is 0.5mm at minimum, the lines of writing is thick simultaneously leads to the field of vision limited because of the appearance, to just learning writing, need a student who scratches the writing process, can influence the learning effect, and then lead to the handwriting poor, and the student is as main consumer group, it uses and experiences the research and development direction of inevitable product, although, also have the needle tubing nib that appearance and handwriting are thin, but the needle tubing nib is mostly tubular product extrusion, intensity and writing length are relatively poor undoubtedly, do not notice the nib will bend the variant on the ground, and no two pearl spring structure, the leak resistance is relatively poor.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide the double-ball spring pen point which has long service life, is beneficial to students to learn and write and has good leak-proof performance.
In order to achieve the purpose, the utility model provides the following technical scheme: the ball valve comprises a main body, the main body be the tubulose and have the tube hole, the tube hole in from preceding first ball, second ball and the spring of having set gradually backward, the tube hole front end be provided with and supply the rotatory pearl of first ball to hold in the palm, first ball part expose in the port of tube hole front end, the spring rear end limit be located the tube hole, the front end offsets with the second ball, its characterized in that: the main part lateral wall include first portion, second portion, third portion and the fourth portion that sets gradually from the front to the back, first portion relative and the pearl support and the diameter from the front to the back gradually increase, second portion relative and the second ball and from the front to the back diameter keep unchangeable, third portion diameter from the front to the back gradually increase, the fourth portion from the front to the back diameter keep unchangeable, the diameter of second portion be 0.85~0.9mm, the diameter of fourth portion be 1.25~1.35 mm.
Through adopting above-mentioned technical scheme, structural at double-ball spring, change the main part appearance, adjust traditional bullet head form for the gradual reduction syringe form that second portion and fourth portion are constituteed, and pass through by the third portion, the main part appearance of this specification, not only have the advantage that the leak protection nature that double-ball spring has is good, still have better field of vision, make the student can clearly observe a stroke when writing, and, the diameter is reduced for the diameter of 1.25~1.35 mm's fourth portion 2.3mm of tradition, still for the whole better intensity that provides of main part, avoid the possibility of deformation, effectively increase of service life, in addition, diameter is 0.85~0.9 mm's second portion then guarantees to have enough space and holds still have sufficient wall thickness when the second ball, further increase structural reliability.
The utility model is further configured to: the length of the main body is 6.8-7 mm, and the sum of the lengths of the first part, the second part and the third part is 1.5-1.7 mm.
Through adopting above-mentioned technical scheme, the length of rational distribution first portion, second portion, third portion, fourth portion further optimizes main part intensity.
The utility model is further configured to: the diameter of the part of the pipe hole corresponding to the second ball is 0.6-0.7 mm, and the diameter of the second ball is 0.5-0.6 mm.
Through adopting above-mentioned technical scheme, select reasonable second ball and tube hole specification, further guarantee the cooperation stability and the main part reliability of ball.
The utility model is further configured to: the front end of the tube hole comprises a closing section, a movable section and a limiting section which are sequentially arranged from front to back, the limiting section is located at the bead support, the first ball is limited between the closing section and the limiting section, the diameter of the first ball is 0.49-0.51 mm, the diameter of the movable section is kept unchanged from front to back and is 0.52-0.53 mm, the diameter of the closing section is gradually increased from front to back, the diameter of the smaller end of the closing section is smaller than the diameter of the movable section by 0.045-0.055 mm, the diameter of the limiting section is gradually reduced from front to back, and the diameter of the smaller end of the limiting section is 0.25-0.35 mm.
Through adopting above-mentioned technical scheme, by the binding off section, the movable segment and the spacing section of above-mentioned specification, guarantee first ball rolling smoothness nature and writing length at the in-process of writing.
The utility model is further configured to: the height of the spherical cap part of the first ball extending out of the port when the first ball is not extruded is 0.145-0.155 mm.
Through adopting above-mentioned technical scheme, the height of the spherical crown part of first ball port is 0.145~0.155mm, can provide better sense of touch and more smooth and easy writing experience when making first ball contact paper.
The utility model is further configured to: the pearl holds in palm and is provided with a plurality of china ink grooves along circumference equidistance, the diameter of the maximum diameter department at the relative main part center of china ink groove be 0.46~0.5mm, the width is 0.48~0.52 mm.
By adopting the technical scheme, the ink groove with the specification is selected, so that the ink output is more reasonable, and longer and clearer characters can be written.
The utility model is further configured to: the part of the pipe hole corresponding to the spring comprises three sections of cylindrical sections with diameters gradually increased from front to back, the diameters of the cylindrical sections are 0.68-0.72 mm, 0.73-0.77 mm and 0.83-0.87 mm respectively, and adjacent cylindrical sections are in slope transition.
Through adopting above-mentioned technical scheme, the part that the pipe hole corresponds with the spring is constituteed to the multistage cylinder section, on the one hand, the spring assembly of being convenient for, and on the other hand, the stability of spring assembly is guaranteed.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a top view of an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in figure 1, the utility model discloses a double-ball spring pen point, which comprises a main body 1, wherein the main body 1 is tubular and is provided with a tube hole 2, a first ball 3, a second ball 4 and a spring 5 are sequentially arranged in the tube hole 2 from front to back, the front end of the tube hole 2 is provided with a ball support 22 for the first ball 3 to rotate, part of the first ball 3 is exposed out of a port at the front end of the tube hole 2, the rear end of the spring 5 is limited in the tube hole 2, the front end of the spring is abutted against the second ball 4, the rear end of the tube hole 2 is provided with a bulge 21 for limiting the spring 5, the outer side wall of the main body 1 comprises a first part 11, a second part 12, a third part 13 and a fourth part 14 which are sequentially arranged from front to back, the first part 11 is opposite to the ball support, the diameter of the first part is gradually increased from front to back, the second part 12 is opposite to the second ball 4, the diameter of the second part is kept unchanged from front to back, the third part 13 is gradually increased from front to back, and the fourth part 14 is kept unchanged from front to back, the diameter a of the second portion 12 is 0.85 to 0.9mm, the diameter b of the fourth portion 14 is 1.25 to 1.35mm, on the structure of the double-ball spring 5, the shape of the main body 1 is changed, the traditional bullet shape is adjusted to be a tapered needle tube shape consisting of a second part 12 and a fourth part 14, and the transition is carried out by a third part 13, the appearance of the main body 1 with the specification not only has the advantage of good leak-proof performance of the double-ball spring 5, but also has better visual field, so that students can clearly observe one stroke when writing, furthermore, the diameter of the fourth portion 14 is reduced to 1.25-1.35 mm compared with the conventional 2.3mm, but still provide better intensity for the whole main part 1, avoid the possibility of deformation, effective increase of service life, in addition, the diameter is second portion 12 of 0.85~0.9mm then guarantees to have enough space to hold second ball 4 and still have sufficient wall thickness simultaneously, further increases structural reliability.
As shown in figure 1, the length c of the main body 1 is 6.8-7 mm, the sum d of the lengths of the first part 11, the second part 12 and the third part 13 is 1.5-1.7 mm, the lengths of the first part 11, the second part 12, the third part 13 and the fourth part 14 are reasonably distributed, and the strength of the main body 1 is further optimized.
As shown in FIG. 2, the diameter e of the pipe hole 2 corresponding to the second ball 4 is 0.6-0.7 mm, the diameter f of the second ball 4 is 0.5-0.6 mm, and the reasonable specifications of the second ball 4 and the pipe hole 2 are selected to further ensure the fitting stability of the balls and the reliability of the main body 1.
As shown in fig. 2, the front end of the tube hole 2 comprises a closing section 23, a movable section 24 and a limiting section 25 which are sequentially arranged from front to back, the limiting section 25 is positioned at the bead support 22, the first ball 3 is limited between the closing section 23 and the limiting section 25, the diameter g of the first ball 3 is 0.49-0.51 mm, the diameter of the movable section 24 is kept unchanged from front to back, the diameter h is 0.52-0.53 mm, the diameter of the closing section 23 gradually increases from front to back, the smaller end diameter of the closing section 23 is smaller than the diameter of the movable section 24 by 0.045-0.055 mm, the diameter of the limiting section 25 is gradually reduced from front to back, and the smaller end diameter i of the limiting section 25 is 0.25-0.35 mm.
The height j of the spherical cap part of the first ball 3 extending out of the port when the first ball is not extruded is 0.145-0.155 mm, so that the first ball 3 can provide better touch feeling and smoother writing experience when contacting paper.
As shown in figure 3, a plurality of ink grooves 221 are equidistantly arranged on the bead support 22 along the circumferential direction, the k diameter of the maximum diameter position of the ink groove 22 relative to the center of the main body 1 is 0.46-0.5 mm, the width l is 0.48-0.52 mm, and the ink grooves with the specifications are selected, so that the ink output is more reasonable, and longer and clearer characters can be written.
As shown in FIG. 1, the part of the pipe hole 2 corresponding to the spring 5 comprises three sections of cylindrical sections, the diameters of which are respectively 27, 28 and 29, the diameters of which are respectively m 0.68-0.72 mm, n 0.73-0.77 mm and o 0.83-0.87 mm, which are gradually increased from front to back, and the adjacent cylindrical sections are in slope transition, and the parts of the pipe hole 2 corresponding to the spring 5 are formed by the plurality of sections of cylindrical sections, so that on one hand, the assembly of the spring 5 is facilitated, and on the other hand, the assembly stability of the spring 5 is ensured.
Claims (7)
1. The utility model provides a two pearl spring nibs, includes the main part, the main part be tubulose and have the tube hole, the tube hole in from preceding first ball, second ball and the spring of having set gradually backward, the tube hole front end be provided with and supply the rotatory pearl of first ball to hold in the palm, the port that the first ball part exposes in the tube hole front end, the spring rear end limit be located the tube hole, the front end offsets with the second ball, its characterized in that: the main part lateral wall include first portion, second portion, third portion and the fourth portion that sets gradually from the front to the back, first portion relative and the pearl support and the diameter from the front to the back gradually increase, second portion relative and the second ball and from the front to the back diameter keep unchangeable, third portion diameter from the front to the back gradually increase, the fourth portion from the front to the back diameter keep unchangeable, the diameter of second portion be 0.85~0.9mm, the diameter of fourth portion be 1.25~1.35 mm.
2. The dual ball-spring nib of claim 1, wherein: the length of the main body is 6.8-7 mm, and the sum of the lengths of the first part, the second part and the third part is 1.5-1.7 mm.
3. The dual ball-spring nib of claim 1, wherein: the diameter of the part of the pipe hole corresponding to the second ball is 0.6-0.7 mm, and the diameter of the second ball is 0.5-0.6 mm.
4. The dual ball-spring nib of claim 1, wherein: the front end of the tube hole comprises a closing section, a movable section and a limiting section which are sequentially arranged from front to back, the limiting section is located at the bead support, the first ball is limited between the closing section and the limiting section, the diameter of the first ball is 0.49-0.51 mm, the diameter of the movable section is kept unchanged from front to back and is 0.52-0.53 mm, the diameter of the closing section is gradually increased from front to back, the diameter of the smaller end of the closing section is smaller than the diameter of the movable section by 0.045-0.055 mm, the diameter of the limiting section is gradually reduced from front to back, and the diameter of the smaller end of the limiting section is 0.25-0.35 mm.
5. The dual ball-spring nib of claim 1, wherein: the height of the spherical cap part of the first ball extending out of the port when the first ball is not extruded is 0.145-0.155 mm.
6. The dual ball-spring nib of claim 1, wherein: the pearl holds in palm and is provided with a plurality of china ink grooves along circumference equidistance, the diameter of the maximum diameter department at the relative main part center of china ink groove be 0.46~0.5mm, the width is 0.48~0.52 mm.
7. The dual ball-spring nib of claim 1, wherein: the part of the pipe hole corresponding to the spring comprises three sections of cylindrical sections with diameters gradually increased from front to back, the diameters of the cylindrical sections are 0.68-0.72 mm, 0.73-0.77 mm and 0.83-0.87 mm respectively, and adjacent cylindrical sections are in slope transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199373.4U CN215552127U (en) | 2021-09-11 | 2021-09-11 | Double-ball spring pen point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199373.4U CN215552127U (en) | 2021-09-11 | 2021-09-11 | Double-ball spring pen point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215552127U true CN215552127U (en) | 2022-01-18 |
Family
ID=79849781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122199373.4U Active CN215552127U (en) | 2021-09-11 | 2021-09-11 | Double-ball spring pen point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215552127U (en) |
-
2021
- 2021-09-11 CN CN202122199373.4U patent/CN215552127U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240228 Address after: Room 103B, room 103B, 84 Sinan Road, Huangpu District, Shanghai Patentee after: SHANGHAI KACO INDUSTRIAL Co.,Ltd. Country or region after: China Address before: 325000 No.26, Aojiang Wulong carton Industrial Zone, Pingyang County, Wenzhou City, Zhejiang Province Patentee before: Wenzhou Changcheng cultural products Co.,Ltd. Country or region before: China |