CN217574649U - Pen head assembly, pen refill and ball pen - Google Patents

Abstract

The utility model relates to a stationery technical field provides a refill subassembly, refill and ballpoint. This nib subassembly includes: the ball seat body is internally provided with an ink supply channel; the writing ball is partially arranged in the ink supply channel and can rotate relative to the ball seat body; the water diversion core is arranged through the ball seat body in a penetrating way; the valve bead is arranged in the ink supply channel, one side of the valve bead can be abutted against the water guide core, and the other side of the valve bead is abutted against the writing bead; and the spring is arranged in the ball seat body and sleeved on the water diversion core, and two ends of the spring are respectively abutted against the water diversion core and the valve bead. The pen point assembly adopts a double-ball structure and a mode of setting the needle-free spring, the valve ball replaces the tip of the spring to perform elastic sealing, and the situation that the top of the writing ball is not in place due to the fact that the spring wire is clamped in the groove is avoided. When the writing ball is in a compressed state in a writing state, the ink can be discharged evenly by sequentially passing through the water guide core, the valve ball and the writing ball, the stitch is smooth, and ink accumulation is avoided.

Description

Pen head assembly, pen refill and ball pen

Technical Field

The utility model relates to a stationery technical field especially relates to a refill subassembly, refill and ballpoint.

Background

Since the advent of ball point pens, great changes have been made to the development of writing instruments. With the market demand changing from the earliest ink ball-point pen to the latter water-based ink ball-point pen and gel ink ball-point pen, ball-point pens have been dramatically developed as a new generation of writer, and users have made higher demands on the function and the usability of ball-point pens.

Among them, the water-based ball-point pen ink has the characteristic of low viscosity, so that writing is smooth and continuous, but the requirement on the sealing performance is very high due to relative easy leakage. Most of common water-based ball-point pens have the following defects in a direct liquid type structure:

firstly, the direct liquid type structure adopts a water storage device as a core ink control component, and adopts a water diversion core made of fiber materials for ink guiding. Because the existence of diversion core, diversion core and nib spring often can't be compatible, lead to the unable sealed problem in the time of the diversion of china ink.

Secondly, be provided with the needle point ejector pin in the spring one side that is close to the ball, the needle point ejector pin withstands the ball for the writing of ball, but the spring silk blocks easily in the oil groove, perhaps the needle point ejector pin blocks easily in the through-hole inner wall, leads to the ball top not in place to influence the smoothness nature of writing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a refill, refill and ballpoint can also guarantee good sealed effect when guaranteeing to write smoothly.

According to a first aspect of the present invention, there is provided a pen head assembly, comprising:

the ball seat body is internally provided with an ink supply channel;

the writing ball is partially arranged in the ink supply channel and can rotate relative to the ball seat body;

the water diversion core penetrates through the ball seat body;

the valve bead is arranged in the ink supply channel, one side of the valve bead can be abutted against the water diversion core, and the other side of the valve bead is abutted against the writing bead;

the spring is arranged in the ball seat body and sleeved on the water diversion core, and two ends of the spring are respectively abutted against the water diversion core and the valve bead.

In one aspect of the present invention, the water diversion core includes:

the thick section part penetrates through the ball seat body and is connected with the ball seat body;

the thin section part is arranged on the ball seat body and is abutted against the valve bead;

the step part is respectively connected to the thick section part and the thin section part, and the spring sleeve is arranged on the thin section part and respectively abuts against the step part and the valve bead.

In an aspect of the present invention, the spring includes:

a front cone portion abutting against the valve bead;

the rear parallel ring is abutted against the water diversion core;

and the two ends of the middle straight part are respectively abutted against the front cone part and the rear union ring.

In one aspect of the present invention, the ink supply passage includes:

the valve ball is arranged in the first ball seat hole;

and the second ball seat hole is communicated with the first ball seat hole, and the writing ball is arranged in the second ball seat hole.

In one aspect of the invention, the first ball seat hole and the valve bead are provided with a first gap therebetween.

In one aspect of the invention, the second ball seat hole and the writing ball are provided with a second gap therebetween.

In an aspect of the present invention, the ink supply channel further includes:

a communication hole between the first ball seat hole and the second ball seat hole, the communication hole communicating with the first ball seat hole;

and the oil grooves are annularly arranged on the communication holes, one ends of the oil grooves are communicated with the communication holes, and the other ends of the oil grooves are communicated with the second ball seat hole.

The utility model discloses an aspect, be provided with axial direction along its axial direction in the ball seat body, the drainage core wears to locate axial direction through-hole, the spring set up in the axial direction through-hole, axial direction through-hole communicate in supply ink channel.

In one aspect of the present invention, the inner diameter of the axial through hole is gradually reduced toward the ink supply passage.

In one aspect of the present invention, the ball seat body and one of the water-guiding cores is provided with a convex card, and the other is provided with a clamping groove, the convex card is connected to the clamping groove.

The utility model provides a nib subassembly sets up on the diversion core is located to the internal and cover of ball seat through the spring, and inside the diversion core can pass the spring, the realization diversion process. One side of the valve bead can be abutted against the water diversion core and used for opening and closing ink in the water diversion core, the writing bead and the valve bead are arranged in the ink supply channel, so that the surfaces of the valve bead and the writing bead are covered with the ink, the writing bead part is arranged in the ink supply channel, the writing bead is arranged in a protruding mode relative to the ball seat body, and the writing bead can rotate relative to the ball seat body to realize a writing function. The two ends of the spring are respectively abutted to the water guide core and the valve bead, the other side of the valve bead is abutted to the writing bead, the spring is abutted to the writing bead through the valve bead, the double-bead structure is adopted, the setting mode of the needle-tip-free spring is adopted, the valve bead replaces the tip of the spring to perform elastic sealing, and the situation that the spring wire is clamped in the groove to cause that the top of the writing bead is not in place is avoided.

When the writing ball is in a compressed state in a writing state, the ink can be uniformly discharged through the water guide core, the valve ball and the writing ball in sequence, the stitch is smooth, and ink accumulation is avoided; when stopping writing under the effect of spring and valve pearl, write the pearl and be in the top pearl state and fixed the stewing, write the pearl butt in the ball seat body, the leakproofness is good, and under the guard action of ball seat body, write the pearl and do not expose in the air, then the ink is difficult dry, and intermittent type writing performance is better, reduces and drips long-pending china ink or dry risk.

According to a second aspect of the utility model, a pen core is provided, include: the pen comprises a pen core tube body, ink and the pen point assembly, wherein the pen point assembly is arranged at the end part of the pen core tube body; the pen core comprises a pen point assembly and a pen core tube, wherein the pen core tube is provided with a central cavity, the central cavity is used for containing ink, and the central cavity is communicated with an ink supply channel of the pen point assembly and used for conveying the ink to the ink supply channel.

The utility model provides a refill, nib subassembly set up in the tip of refill body, and the refill body provides accommodation space for the nib subassembly. The pen point component is used for containing ink, the central cavity is communicated with the ink supply channel of the pen point component and used for conveying the ink to the ink supply channel, the ink is not easy to dry, the intermittent writing performance is good, and the condition of ink dripping or drying cannot occur to the pen point component.

According to the third aspect of the utility model, a ball-point pen is provided, including foretell refill.

The utility model provides a ball pen has and draws the china ink smoothly, writes and feels in the same direction as smooth, goes out the china ink evenly, and the intermittent type is write advantages such as performance is good.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

FIG. 1 is a cross-sectional view of a pen head assembly shown according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating the construction of a pen head assembly according to an exemplary embodiment;

FIG. 3 is a cross-sectional view of a ball socket body in a pen head assembly according to an exemplary embodiment;

FIG. 4 is a schematic diagram illustrating the configuration of ink-feed channels in a cartridge assembly according to one exemplary embodiment;

FIG. 5 is a schematic diagram illustrating a pen head assembly showing communication holes and oil sump structures according to an exemplary embodiment;

FIG. 6 is a schematic diagram illustrating a construction of a wick in a cartridge assembly according to an exemplary embodiment;

FIG. 7 is a schematic diagram illustrating a spring configuration in a pen head assembly, according to an exemplary embodiment.

The reference numerals are explained below:

1. a ball seat body; 2. writing a bead; 3. a water diversion core; 4. a valve bead; 5. a spring;

11. an ink supply passage; 111. a first ball seat bore; 112. a second ball seat bore; 113. a communicating hole; 114. an oil sump;

12. an axial through hole; 121. a first mesopore; 122. a second mesopore; 123. a third mesopore;

13. clamping convex;

31. a thick section part; 32. a thin section part; 33. a step portion;

51. a front cone portion; 52. then, combining the rings; 53. a middle straight part.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and encompass, for example, a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

Example one

Aiming at the problem that the traditional water-guiding core and the spring cannot coexist, so that the ink cannot be guided and the ink cannot be sealed at the same time, the embodiment provides the pen head component. As shown in fig. 1, the pen head assembly includes a ball housing 1, a writing ball 2, a wick 3, a valve ball 4 and a spring 5, wherein an ink supply channel 11 is disposed in the ball housing 1, and the writing ball 2 is partially disposed in the ink supply channel 11 and can rotate relative to the ball housing 1. The water guiding core 3 penetrates through the ball seat body 1, the valve bead 4 is arranged in the ink supply channel 11, one side of the valve bead 4 can be abutted against the water guiding core 3, and the other side of the valve bead 4 is abutted against the writing bead 2; the spring 5 is arranged in the ball seat body 1 and sleeved on the water diversion core 3, and two ends of the spring 5 are respectively abutted against the water diversion core 3 and the valve bead 4.

The pen point assembly provided by the embodiment is disposed in the ball seat body 1 through the spring 5 and sleeved on the water diversion core 3, and the water diversion core 3 can penetrate through the spring 5, so that the ink diversion process is realized. One side of the valve bead 4 can abut against the water diversion core 3 and is used for opening and closing the ink in the water diversion core 3. Through being provided with in the ink feed channel 11 and writing pearl 2 and valve pearl 4, make the surface of valve pearl 4 and writing pearl 2 cover printing ink, write pearl 2 part and set up in ink feed channel 11, write pearl 2 and for the setting of 1 protrusion of ball pedestal, write pearl 2 and can rotate for ball pedestal 1, realize writing the function. Through spring 5's both ends respectively butt in leading water core 3 and valve pearl 4, the opposite side butt of valve pearl 4 in writing pearl 2 makes spring 5 pass through valve pearl 4 butt in writing pearl 2, adopts two pearl structures, the 5 mode of setting up of spring that do not have the needle point, and valve pearl 4 replaces the pointed end of current spring to carry out elastic sealing, has avoided 5 silks of spring card inslot and has leaded to writing the condition that pearl 2 pushed up not in place.

When the writing ball 2 is in a compressed state in a writing state, the ink can be uniformly discharged through the water guide core 3, the valve ball 4 and the writing ball 2 in sequence, the stitch is smooth, and ink accumulation is avoided; when stopping writing, under the effect of spring 5 and valve pearl 4, write pearl 2 and be in the top pearl state and fixed standing, write pearl 2 butt in ball seat body 1, the leakproofness is good, and under the guard action of ball seat body 1, write pearl 2 and do not expose in the air, then the ink is difficult dry, and intermittent type writes the performance better, reduces and drips long-pending black or dry risk.

The ball seat body 1, the wick 3 and the spring 5 will be described in detail.

As shown in fig. 1 and 2, the ball holder body 1 includes a big head end having a shape similar to a cylindrical structure, and a tip end disposed at an end of the big head end, the tip end having a tapered structure, the tip end tapering from a direction away from the big head end, which may also be referred to as a pen head end.

As shown in fig. 1 and 3, an axial through hole 12 is provided in the ball seat body 1 along the axial direction thereof, the axial through hole 12 penetrates the large end and the tip end, the wick 3 is inserted into the axial through hole 12, the spring 5 is provided in the axial through hole 12, and the axial through hole 12 provides a receiving space for the wick 3 and the spring 5. An ink supply channel 11 is arranged in the side, away from the large head end, of the tip end, and the axial through hole 12 is communicated with the ink supply channel 11, so that the ink in the water diversion core 3 enters the ink supply channel 11 through the axial through hole 12 to supply the ink to the ink supply channel 11.

Specifically, the inner diameter of the axial through hole 12 gradually decreases toward the ink supply passage 11. With this arrangement, the ink is guided to be able to be collected into the ink supply passage 11.

Specifically, the axial through hole 12 includes a first middle hole 121, a second middle hole 122 and a third middle hole 123 which are sequentially communicated with each other, and the inner diameters of the first middle hole 121, the second middle hole 122 and the third middle hole 123 gradually decrease along the direction close to the tip, that is, the diameter of the middle hole gradually decreases from back to front, and the gradual decrease ensures the effect of uniform transition, wherein the diameter of the first middle hole 121 is 1.55 ± 0.05mm, which is slightly larger than the diameter of the water diversion core 3.

In one aspect of the embodiment, one of the ball seat body 1 and the wick 3 is provided with a locking protrusion 13, and the other is provided with a locking groove, and the locking protrusion 13 is locked in the locking groove. Through the protruding 13 joint of card in the draw-in groove, realize leading fixedly between water core 3 and the ball seat body 1, avoid appearing leading the condition that water core 3 removed. Because the water guide core 3 is abutted against the spring 5, the elastic acting force of the spring 5 on the valve ball 4 is further ensured, and the writing ball 2 can be ensured to be in a ball ejecting state at any time. In actual production, dotting treatment can be carried out on the outer wall of the large end of the ball seat body 1, so that the inner wall of the first middle hole 121 protrudes towards the radial direction and is embedded into the outer wall of the water diversion core 3.

In one aspect of the present embodiment, as shown in fig. 4, the ink supply passage 11 includes a first ball seat hole 111 and a second ball seat hole 112 both provided at the tip end, the valve ball 4 is provided in the first ball seat hole 111, and the first ball seat hole 111 provides a receiving space for the valve ball 4. One end of the first ball seat hole 111 is communicated with the third middle hole 123, and the other end is communicated with the second ball seat hole 112, so that the ink is drained to the second ball seat hole 112 through the first ball seat hole 111, a writing ball 2 is arranged in the second ball seat hole 112, and the second ball seat hole 112 provides an accommodating space for the writing ball 2.

Wherein the diameter of the first ball seat hole 111 is about 0.65 mm-0.70 mm, the diameter of the valve ball 4 is 0.6mm, and the diameter of the first ball seat hole 111 is slightly larger than the diameter of the valve ball 4. A first gap is formed between the first ball seat hole 111 and the valve ball 4, and a second gap is about 0.25 mm-0.50 mm, so that the situation that the valve ball 4 and the first ball seat hole 111 are blocked is avoided, ink of the water diversion core 3 can enter the second ball seat hole 112 through the first gap, and smoothness of ink flowing is guaranteed. The valve ball 4 is made of tungsten carbide hard alloy, the surface roughness of the valve ball is Ra0.012-0.025, and the writing ball 2 is ensured to be in a ball ejecting state under the non-writing condition by the compression force of the spring 5 borne by the valve ball 4.

The diameter of the second ball seat hole 112 is about 0.52mm to 0.54mm, a second gap is provided between the second ball seat hole 112 and the writing ball 2, and the second gap is about 0.01mm to 0.02mm, and the second gap is used to realize the circulation of ink, thereby realizing the writing of the writing ball 2.

In order to ensure communication between the first and second ball seat holes 111 and 112, as shown in fig. 4 to 5, the ink supply passage 11 further includes a communication hole 113 and a plurality of oil grooves 114, the communication hole 113 being located between the first and second ball seat holes 111 and 112, the communication hole 113 being communicated with the first ball seat hole 111. The communication hole 113 is located between the first ball seat hole 111 and the second ball seat hole 112, the communication hole 113 achieves the function of middle communication between the two ball seat holes, ink flowing out from the first gap enters the communication hole 113, the throttling function of the ink is achieved, and the situation of a large amount of accumulated ink is avoided.

The plurality of oil grooves 114 are disposed around the communication hole 113, and one end of each oil groove 114 is communicated with the communication hole 113, and the other end is communicated with the second socket hole 112. The number of the oil grooves 114 is specifically three, five, seven, or the like, and the width of the oil grooves 114 is 0.8mm ± 0.2mm. The plurality of oil grooves 114 are annularly arranged on the communication hole 113, so that the plurality of symmetrical oil grooves 114 are radially formed in the outer side of the communication hole 113 in an extending mode, the ink flowing out of the communication hole 113 is equivalently uniformly dispersed along the circumferential direction of the ball seat body 1, the ink flowing out of the oil grooves 114 can enter the second gap, the situation of writing and ink breaking is avoided, the uniformity of the dispersion of the ink around the writing ball 2 is guaranteed, and the smoothness of writing is guaranteed.

In one aspect of the present embodiment, as shown in fig. 6, the wick 3 includes a thick section 31, a thin section 32 and a step 33, the thick section 31 is disposed through the ball seat body 1 and connected to the ball seat body 1, the thin section 32 is disposed on the ball seat body 1 and abuts against the valve ball 4, the step 33 is connected to the thick section 31 and the thin section 32, and the spring 5 is disposed on the thin section 32 and abuts against the step 33 and the valve ball 4.

Wherein, the total length of diversion core 3 is about 60mm 1mm, and thick section 31 is fixed in the big end of ball seat body 1 through dotting, and the diameter of thick section 31 is about 1.48mm 0.02mm, and the diameter of thick section 31 slightly is less than first mesopore 121, ensures sufficient return air space, and the water receiver hole is passed at the rear portion of thick section 31, realizes the function of leading black. The thin section portion 32 is about 0.70mm + -0.05 mm in diameter. The outer diameter of the spring 5 is slightly smaller than the diameter of the thick section part 31, and the inner diameter of the spring 5 is slightly larger than the diameter of the thin section part 32, so that the thin section part 32 of the water diversion core 3 can pass through the spring 5. By providing the step portion 33 to connect to the thick section portion 31 and the thin section portion 32, respectively, the step portion 33 also plays a transitional role while the step portion 33 realizes the intermediate connection between the thick section portion 31 and the thin section portion 32. The diameter of step portion 33 is to the direction that is close to thin section portion 32 and reduces gradually, and spring 5 butt in step portion 33, and step portion 33 provides the butt position for spring 5, realizes the limiting displacement to spring 5.

Specifically, a tapered portion is arranged at one end of the thin section portion 32 far away from the step portion 33, that is, the front end of the thin section portion 32 is a tapered surface structure, and the diameter of the tapered surface structure is slightly smaller than that of the spring 5, so that the water diversion core 3 can be ensured to be in direct contact with the valve bead 4.

In one aspect of the present embodiment, as shown in fig. 7, the spring 5 includes a front cone 51, a rear ring 52 and a middle straight portion 53, the front cone 51 abuts against the valve bead 4, the rear ring 52 abuts against the water guide core 3, both ends of the middle straight portion 53 respectively abut against the front cone 51 and the rear ring 52, and the middle straight portion 53 plays a role of intermediate connection between the front cone 51 and the rear ring 52.

Wherein, the total length of the spring 5 is about 10.5mm plus or minus 0.3mm, the wire diameter of the spring 5 is about 0.10mm plus or minus 0.01mm, and the outer diameter is about 1.1mm plus or minus 0.1mm; the rear ring 52 abuts against the step 33 of the water-guiding core 3, the step 33 compresses the spring 5, the spring 5 is fixed inside the ball seat body 1, the front cone 51 abuts against the valve bead 4, and under the elastic force of the spring 5, the spring 5 indirectly acts on the writing bead 2 through the valve bead 4, so that the ball seat body 1 is ensured to be in an elastic sealing state.

The embodiment also provides a pen core, which comprises a pen core tube body, ink and the pen point assembly, wherein the pen point assembly is arranged at the end part of the pen core tube body; the refill body is provided with a central cavity, the central cavity is used for containing ink, and the central cavity is communicated with an ink supply channel 11 of the pen point assembly and used for conveying the ink to the ink supply channel 11.

The refill that this embodiment provided, nib subassembly set up in the tip of refill body, and the refill body provides accommodation space for the nib subassembly. The pen point component is used for containing ink through the central cavity, the central cavity is communicated with the ink supply channel 11 of the pen point component and used for conveying the ink to the ink supply channel 11, the ink is not easy to dry, the intermittent writing performance is good, and the situation of ink dripping and accumulating or drying cannot occur to the pen point component.

The embodiment also provides a ball-point pen which comprises the refill, wherein the ball-point pen is fixed or pressed, is particularly suitable for direct-liquid type water-based ink, and has the advantages of smooth ink guiding, smooth writing hand feeling, uniform ink discharging, good intermittent writing performance and the like.

The pen point assembly provided by the embodiment is specifically a direct-liquid type water-based bullet spring 5 pen point assembly, and the pen point assembly and a direct-liquid type water-based ball-point pen ink dye black A matching test obtain the following results:

1. the direct liquid type water-based ball-point pen ink dye is black A, the viscosity is 4.11mPa & s (30 r), the surface tension is 38.5mN/m, and the pH value is 7.97; the test conditions are as follows: german HUTT writing instrument, 70 degrees of writing angle, 4.5m/min of writing speed and 1N of writing pressure.

2. The test results of the writing performance are as follows: the average ink output of the refill with the ink filling amount of 1.2g is 120mg/m, the scribing length reaches 850-1200m, the total abrasion amount of the bottom of the second ball seat hole 112 of the pen point assembly is 0.012mm, the writing trace is normal, no ink accumulation exists in the pen point and the trace, and the writing performance meets the standard requirement of a water-based ball pen.

3. A limit test is carried out on the sealing performance of the pen cores, all the pen cores are uncapped after matching is completed, the pen heads are placed downwards and hung in a 50 ℃ oven for more than 10 days, no ink dripping and weight loss are found, and all the pens can write normally when opened. And the ink under the same test condition is matched with the conventional water-based pen point, so that 40% of open writing color is light and broken lines exist. The pen point assembly provided by the embodiment has good sealing performance with a black A matching pen core of the ink dye of the direct-liquid type water-based ball-point pen.

4. In other application performance tests, the static suspension ink drop test and the leak resistance test are not abnormal, the intermittent writing is over 180 days, the writing lubrication degree is 0.26, and other general application performances meet the standard requirements of the water-based ball pen.

Example two

The pen point assembly provided by the embodiment has a similar structure to the embodiment, and the difference is only in the ink dye. The blue B matching test of the pen point assembly and the ink dye of the direct liquid type water-based ball-point pen provided by the embodiment obtains the following results:

1. the direct liquid type water-based ball-point pen ink dye is blue B, the viscosity is 5.20mPa & s (30 r), the surface tension is 36.5mN/m, and the pH value is 7.88; the test conditions are as follows: german HUTT writing instrument, 70 degrees of writing angle, 4.5m/min of writing speed and 1N of writing pressure.

2. The test results of the writing performance are as follows: the average ink output amount of the refill with the ink filling amount of 1.7g is 110mg/m, the scribing length reaches 1300-1900m, the total abrasion amount of the bottom of the second ball seat hole 112 of the pen point component is 0.020mm, the writing trace is normal, no ink accumulation exists in the pen point and the trace, and the writing performance meets the standard requirement of a water-based ball pen.

3. A limit test is carried out on the sealing performance of the pen cores, all the pen cores are uncapped after matching is completed, the pen heads are placed downwards and hung in a 50 ℃ oven for more than 10 days, no ink dripping and weight loss are found, and all the pens can write normally when opened. And the ink under the same test condition is matched with the conventional water-based pen point, so that the open pen writing color is light and the line is broken by 100 percent. The pen point assembly provided by the embodiment has good sealing performance with the blue B matched pen core of the ink dye of the direct-liquid type water-based ball-point pen.

4. In other application performance tests, the standing suspension ink drop test and the leak resistance test are not abnormal, the intermittent writing lasts for more than 180 days, the writing lubrication degree is 0.27, and other general application performance meets the standard requirements of the water-based ball pen.

EXAMPLE III

The pen point assembly provided by the embodiment has a similar structure to the embodiment, and the difference is only in the ink dye.

The following results were obtained in a black C matching test of the direct liquid type water-based bullet spring 5 nib assembly with the direct liquid type water-based ballpoint pen ink pigment:

1. the direct liquid type water-based ball-point pen ink pigment is black C, the viscosity is 5.94mPa & s (30 r), the surface tension is 30.8mN/m, and the pH value is 8.23. The particle size D50 is 57nm; the test conditions are as follows: german HUTT writing instrument, 70 degrees of writing angle, 4.5m/min of writing speed and 1N of writing pressure.

2. The test results of the writing performance are as follows: the average ink output of the refill with the ink filling amount of 1.2g is 105mg/m, the scribing length reaches 900-1300m, the total abrasion amount of the bottom of the second ball seat hole 112 of the refill head component is 0.020mm, the writing trace is normal, no ink accumulation exists in the refill head and the trace, and the writing performance meets the standard requirement of a water-based ball pen.

3. A limit test is carried out on the sealing performance of the pen cores, all the pen cores are uncapped after matching is completed, the pen heads are placed downwards and hung in a 50 ℃ oven for more than 10 days, no ink dripping and weight loss are found, and all the pens can write normally when opened. And the ink under the same test condition is matched with the conventional water-based pen point, so that 100 percent of writing can not be realized. The pen point assembly provided by the embodiment has good sealing performance with a direct liquid type water-based ball-point pen ink pigment black C matching pen core.

4. In other application performance tests, the standing suspension ink drop test and the leak resistance test are not abnormal, the intermittent writing lasts for more than 90 days, the writing lubrication degree is 0.29, and other general application performance meets the standard requirements of the water-based ball pen.

It should be noted that, for other structures of the pen point assembly in the present embodiment, reference may be made to the structure of the pen point assembly in the above-mentioned embodiment, which is not described herein again.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (12)

1. A stylus assembly, comprising:

the ball seat body (1), the ball seat body (1) is internally provided with an ink supply channel (11);

the writing ball (2) is partially arranged in the ink supply channel (11) and can rotate relative to the ball seat body (1);

the water diversion core (3) is arranged in the ball seat body (1) in a penetrating way;

the valve bead (4) is arranged in the ink supply channel (11), one side of the valve bead (4) can be abutted against the water diversion core (3), and the other side of the valve bead (4) is abutted against the writing bead (2);

the spring (5) is arranged in the ball seat body (1) and sleeved on the water diversion core (3), and two ends of the spring (5) are respectively abutted against the water diversion core (3) and the valve beads (4).

2. Pen head assembly according to claim 1, characterized in that the wicks (3) comprise:

the thick section part (31) penetrates through the ball seat body (1) and is connected with the ball seat body (1);

a thin section part (32) which is arranged on the ball seat body (1) and is abutted against the valve bead (4);

step portion (33), connect respectively in thick subsection (31) with thin subsection (32), spring (5) cover is located on thin subsection (32) and respectively the butt in step portion (33) with valve pearl (4).

3. Pen head assembly according to claim 1, characterized in that the spring (5) comprises:

a front cone (51) abutting against the valve bead (4);

a rear union ring (52) abutting against the water diversion core (3);

a middle straight part (53), wherein two ends of the middle straight part (53) are respectively abutted against the front cone part (51) and the rear union ring (52).

4. The nib assembly of claim 1, wherein the ink feed channel (11) comprises:

a first ball seat bore (111), the valve ball (4) being disposed within the first ball seat bore (111);

and the second ball seat hole (112) is communicated with the first ball seat hole (111), and the writing ball (2) is arranged in the second ball seat hole (112).

5. Pen point assembly according to claim 4, characterised in that a first clearance is provided between the first ball seat hole (111) and the valve ball (4).

6. Pen point assembly according to claim 4, characterised in that a second gap is provided between the second ball socket hole (112) and the writing ball (2).

7. Pen point assembly according to claim 4, characterised in that the ink supply channel (11) further comprises:

a communication hole (113) between the first ball seat hole (111) and the second ball seat hole (112), the communication hole (113) communicating with the first ball seat hole (111);

and the oil grooves (114) are annularly arranged on the communication hole (113), one end of each oil groove (114) is communicated with the communication hole (113), and the other end of each oil groove (114) is communicated with the second ball seat hole (112).

8. The pen point assembly according to any one of claims 1-7, characterized in that an axial through hole (12) is provided in the ball housing (1) along the axial direction thereof, the water-guiding core (3) is inserted into the axial through hole (12), the spring (5) is provided in the axial through hole (12), and the axial through hole (12) is communicated with the ink supply channel (11).

9. Pen point assembly according to claim 8, characterised in that the internal diameter of the axial through hole (12) decreases progressively towards the ink supply channel (11).

10. The pen point assembly according to any one of claims 1-7, characterized in that one of the ball seat body (1) and the water diversion core (3) is provided with a clamping protrusion (13), and the other is provided with a clamping groove, and the clamping protrusion (13) is clamped in the clamping groove.

11. A cartridge, comprising: -a pen tip assembly according to any of claims 1 to 10, comprising a cartridge tube, ink and a pen tip assembly according to any of claims 1 to 10, said pen tip assembly being arranged at the end of said cartridge tube, said cartridge tube being provided with a central cavity for containing said ink, said central cavity being in communication with an ink supply channel (11) of said pen tip assembly for feeding said ink to said ink supply channel (11).

12. A ballpoint pen comprising a refill according to claim 11.

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