Pen point stabilizing structure and pen

Abstract

The pen point stabilizing structure comprises a pen point and a sharp sleeve, the pen point is integrally formed by a rod portion, a tail portion and a writing portion, the tail portion and the writing portion are arranged at the upper end and the lower end of the rod portion respectively, and the diameter of the tail portion is larger than that of the rod portion so that a stopping portion can be formed between the rod portion and the tail portion. The pen point is fixed to the sharp sleeve in a penetrating mode, the writing portion of the pen point extends out of the sharp sleeve, the sharp sleeve comprises a first sleeve and a second sleeve, the inner diameters of the first sleeve and the second sleeve are reduced from top to bottom, a limiting portion is arranged on the inner circumferential wall, corresponding to the stop portion, of the first sleeve, and an inner cylinder of the second sleeve is of a regular polygon structure and is fixed to the outer circumferential wall of the rod portion in a penetrating and sleeving mode in an internally tangent mode. The pen comprises a pen container and an ink core tube contained in the pen container, the sharp sleeve is installed on the pen container so that the tail of the pen point can stretch into the pen container to make contact with the ink core tube to absorb ink, and the pen cap covers the sharp sleeve and enables the writing portion to be contained in the sharp sleeve. The pen is simple in structure, the pen point can be stably fixed and prevented from being pulled out, and use safety and writing stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stationery technical field, concretely relates to a pen point stable structure and have the pen of this pen point stable structure. BACKGROUND

[0002] The pen head of the marker pen in prior art is often pulled out due to external force, which not only affects the continuity of writing, but also has a safety hazard. Especially when children use or operate improperly, the falling of the pen head may cause accidental injury. Therefore, it is necessary to improve the pen head fixing structure of the marker pen to improve its stability and safety. SUMMARY

[0003] In order to overcome the above defects, the utility model provides a pen point stable structure, which is simple in structure and can stably fix the pen head to prevent the pen head from being pulled out and improve the use safety and writing stability.

[0004] The utility model discloses in order to solve its technical problem adopts the technical scheme one is to provide a pen point stable structure, including pen head and sharp cover, with the direction of the pen under the writing state as the reference direction, the pen head is by the stem and the tail and writing part that are respectively arranged on the upper and lower ends of the stem integrated, wherein the diameter of the tail is greater than the diameter of the stem, so that a stop portion is formed between the stem and the tail;

[0005] The pen head is fixed in the sharp cover, and the writing part extends out of the sharp cover, the sharp cover includes a first sleeve and a second sleeve with a decreasing inner diameter from top to bottom, the first sleeve is provided with a limiting portion on the inner wall corresponding to the stop portion, and the inner wall of the second sleeve is a regular polygon structure and is fixed on the outer wall of the stem in an inscribed manner.

[0006] As a further improvement of the utility model, a plurality of limiting ribs are arranged on the inner wall of the first sleeve, the plurality of limiting ribs are close to the central axis of the first sleeve along the radial direction, so that the upper end surface of the plurality of limiting ribs forms the limiting portion;

[0007] The side wall of the plurality of limiting ribs away from the inner wall of the first sleeve is surrounded to form a matching channel, the matching channel is coaxially arranged with the first sleeve and is in communication, and the stem of the pen head passes through the matching channel, and the stop portion is pressed on the limiting portion.

[0008] As a further improvement of the utility model, the inner circumferential wall of the second sleeve extends upward along the axial direction into the first sleeve to form a guide boss, the lower ends of the plurality of limiting ribs are connected to the outer circumferential wall of the guide boss, and an interference boss is annularly arranged on the upper end inner wall surface of the guide boss, the inner diameter of the interference boss is slightly smaller than the diameter of the rod part of the pen head, so that the outer circumferential wall of the rod part corresponding to the interference boss is clamped and fixed.

[0009] As a further improvement of the utility model, the inner circumferential wall of the second sleeve is provided with a guide edge corresponding to each corner, the guide edge extends from the lower end surface of the second sleeve to the lower end surface of the guide boss, and a V-shaped groove is formed in the position opposite to each guide edge on the lower end surface of the second sleeve.

[0010] As a further improvement of the utility model, the first sleeve and the second sleeve are provided with a tapered transition sleeve therebetween.

[0011] Another technical scheme adopted by the utility model to solve the technical problem is to provide a pen comprising:

[0012] A pen barrel;

[0013] A ink core tube accommodated in the pen barrel;

[0014] The pen head stabilizing structure of scheme one is installed on the pen barrel, the upper end of the tip sleeve is positioned at the end of the pen barrel, so that the tail part of the pen head extends into the pen barrel and contacts the ink core tube to absorb ink;

[0015] A pen cap covers the tip sleeve and accommodates the writing part of the pen head in the pen cap.

[0016] As a further improvement of the utility model, the pen barrel is integrally formed by injection molding of plastic material, and the two ends of the pen barrel are respectively provided with mounting sections for positioning two pen head stabilizing structures;

[0017] A partition is arranged in the middle of the inner cavity of the pen barrel to divide the inner cavity of the pen barrel into two accommodating cavities, the two mounting sections are respectively provided with the pen head stabilizing structures, and the two accommodating cavities are respectively provided with the ink core tubes.

[0018] As a further improvement of the utility model, the first sleeve further comprises a connecting section arranged corresponding to the mounting section, a matching section for positioning the pen cap, and an annular boss annularly arranged on the outer circumferential wall of the first sleeve;

[0019] When the mounting section of the pen barrel is coaxially sleeved on the connecting section, the upper end surface of the annular boss abuts against the lower end surface of the pen barrel, and when the pen cap is coaxially sleeved on the matching section, the lower end surface of the annular boss abuts against the upper end surface of the pen cap.

[0020] As a further improvement of the utility model, the connecting section is provided with a placing channel communicated with the matching channel, when the pen head stable structure is installed on the pen barrel, the lower end surface of the ink core tube abuts against the limiting portion, and the tail of the pen head is inserted into the ink core tube.

[0021] As a further improvement of the utility model, the two pen heads are made of fiber material, and the tail is provided with a prismatic platform on the side away from the rod portion; the writing portion of one of the two pen heads is conical, and the writing portion of the other is axe-shaped, and the lower end surface thereof is an inclined surface, and the two ends of the inclined surface in the length direction are connected with the two sides of the outer peripheral wall of the writing portion in an acute angle and an obtuse angle respectively.

[0022] The utility model has the advantages of:

[0023] 1. The simple structure design realizes stable fixation of the pen head, avoids easy pulling out due to external force, and improves the use safety and stability of the pen.

[0024] 2. The outlet end of the sharp sleeve is provided with a regular polygon structure tangent to the peripheral surface of the pen head, which guarantees the exhaust performance required by the pen product, and stably fixes the end of the pen head close to the writing portion, thereby improving the stability during writing.

[0025] 3. The writing portions with different shapes greatly improve the demand of the painting lovers for the number of color overlaps and colors. DRAWINGS

[0026] Figure 1 It is a schematic view of the pen head stable structure of the utility model;

[0027] Figure 2 It is a schematic view of the structure of the pen head of the utility model;

[0028] Figure 3 It is a schematic view of the structure of the sharp sleeve of the utility model;

[0029] Figure 4 It is a top view and a bottom view of the sharp sleeve of the utility model;

[0030] Figure 5 It is a schematic view of the cross section structure of the sharp sleeve of the utility model;

[0031] Figure 6 It is a schematic view of the structure of the pen of the utility model;

[0032] Figure 7 It is a schematic view of the exploded structure of the pen of the utility model;

[0033] Figure 8 It is a cross section view and an enlarged schematic view of A of the pen of the utility model.

[0034] With reference to the drawings, the following description is made:

[0035] 1, pen head; 11, shaft; 12, tail; 13, writing part; 131, conical; 132, axe-shaped; 1321, inclined end face; 14, stop; 2, tip sleeve; 21, first sleeve; 211, limiting part; 212, limiting rib; 213, matching channel; 214, connecting section; 2141, installation channel; 215, matching section; 216, annular boss; 22, second sleeve; 221, guide boss; 222, interference boss; 223, guide edge; 224, V-shaped groove; 23, transition sleeve; 3, pen barrel; 31, mounting section; 32, partition; 33, accommodating bin; 4, ink core tube; 5, cap. DETAILED DESCRIPTION

[0036] A preferred embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0037] Reference Figures 1 to 5 , the embodiment of the pen head stable structure provided by the present application comprises a pen head 1 and a tip sleeve 2, the tip sleeve 2 is coaxially sleeved on the pen head 1, and the direction of the pen in the writing state is taken as a reference direction; the pen head 1 is integrally formed by a shaft 11 and a tail 12 and a writing part 13 respectively arranged on the upper and lower ends of the shaft 11, wherein the pen head 1 rotates around the central axis to form a solid columnar body, the pen head 1 adopts fiber bundles such as nylon or polyester fiber, is integrally processed by existing special equipment and production process, can realize the functions of ink absorption, ink storage and ink guiding, becomes soft and has a certain elasticity after absorbing ink, so as to have the function of forming clear handwriting on paper.

[0038] In addition, the diameter of the tail portion 12 is greater than that of the rod portion 11 in the embodiment, so that a stop portion 14 is formed between the rod portion 11 and the tail portion 12; the pen point 1 is fixedly arranged in the tip sleeve 2, and the writing portion 13 extends out of the tip sleeve 2. The tip sleeve 2 is a thin-walled tube with a hollow and open ends, and includes a first sleeve 21 and a second sleeve 22 with a decreasing inner diameter from top to bottom. The first sleeve 21 and the second sleeve 22 are connected by a transition sleeve 23 in a conical shape. The first sleeve 21 is provided with a limiting portion 211 on the inner circumferential wall corresponding to the stop portion 14, so that when the pen point 1 is arranged in the tip sleeve 2 from top to bottom, the stop portion 14 of the pen point 1 is blocked by the limiting portion 211 to limit the axial movement of the pen point 1, thereby preventing the pen point 1 from being pulled out of the tip sleeve 2 under external force and improving the safety. In addition, the inner tube of the second sleeve 22 is in a regular polygonal structure and is fixedly arranged on the outer circumferential wall of the rod portion 11 in an inscribed manner. As a preferred, the inner tube of the second sleeve 22 is in a regular quadrilateral cross section, and each side is an arc-shaped side protruding towards the central axis, so that the outer circumferential wall of the rod portion 11 is in line contact with the corresponding arc-shaped side to realize an interference fit, so that the line contact facilitates to reduce the resistance of the pen point to the tip sleeve, and at the same time, the line contact can prevent the pen point from shaking in the radial direction and ensure the stability of writing.

[0039] Further, a plurality of limiting protrusions 212 are arranged on the inner circumferential wall of the first sleeve 21 in a spaced manner, and the plurality of limiting protrusions 212 are close to the central axis along the radial direction of the first sleeve 21, so that the upper end surfaces of the plurality of limiting protrusions 212 form the limiting portion 211, and at the same time, the stability of the overall structure of the tip sleeve can be ensured. The side wall of the plurality of limiting protrusions 212 away from the inner circumferential wall of the first sleeve 21 is surrounded to form a matching channel 213 coaxially arranged and communicated with the first sleeve 21. The rod portion 11 of the pen point 1 passes through the matching channel 213 coaxially, and the stop portion 14 is pressed on the limiting portion 211 to limit the axial movement of the pen point, thereby preventing the pen point from being pulled out of the tip sleeve under external force.

[0040] Further, the inner tube of the second sleeve 22 extends upward along the axial direction to form a guide boss 221 in the first sleeve 21, the lower end of the plurality of limiting protrusions 212 is connected to the outer circumferential wall of the guide boss 221, and the upper end inner wall surface of the guide boss 221 is surrounded by an interference boss 222. The inner diameter of the interference boss 222 is slightly smaller than the diameter of the rod portion 11 of the pen point 1, so that the outer circumferential wall of the rod portion 11 corresponding to the interference boss 222 is clamped and fixed. The arrangement of the guide boss 221 prolongs the positioning distance of the rod portion 11 close to the end of the pen point 1 near the writing portion 13, which can guide the pen point to be arranged in the tip sleeve and ensure the stability of the side of the writing portion 13. In addition, when the pen point 1 is arranged in the tip sleeve 2, the interference boss 222 is located at the middle of the axial direction of the pen point 1, so that the interference boss 222 can ensure the stability of the pen point 1 and further clamp the pen point to prevent the pen point from shaking and being pulled out under external force during writing.

[0041] Further, the inner cylinder of the second sleeve 22 is provided with a guide edge 223 at each corner, the guide edge 223 extending from the lower end surface of the second sleeve 22 to the lower end surface of the guide boss 221, and a V-shaped groove 224 is formed on the lower end surface of the second sleeve 22 at a position opposite to each guide edge 223. That is, a gap is formed between the guide edge 223 and the rod portion 11 of the pen head 1 to meet the requirement of the exhaust performance of the pen product, and the area of the pen head contacting the air is further increased by providing the V-shaped groove 224 on the lower end surface of the guide edge 223 to improve the exhaust capacity of the pen.

[0042] Referring to Figures 6 to 8 The utility model provides an embodiment of a pen, which comprises a pen barrel 3, an ink core tube 4 accommodated in the pen barrel 3, a pen head stabilizing structure mounted on the pen barrel 3, and a pen cap 5 connected with the pen head stabilizing structure. The ink core tube 4 is in a cylindrical structure and is composed of an outer skin layer and an inner fiber bundle. The ink core tube 4 is formed by a conventional forming machine and has a certain small gap space between the fiber filaments of the inner fiber bundle to store and absorb ink. The outer skin layer is a thin-walled tubular body made of PP material to protect the ink from flowing out and drying. The upper end of the sharp sleeve 2 of the pen head stabilizing structure is positioned at the end of the pen barrel 3, so that the tail portion 12 of the pen head 1 extends into the pen barrel 3 and contacts the ink core tube 4 to absorb ink. The pen cap 5 covers the sharp sleeve 2 and receives the writing portion 13 of the pen head 1 therein to protect the writing portion 13.

[0043] Further, the pen provided by the embodiment is a double-head pen. The pen barrel 3 is integrally formed by injection molding with plastic material and has a cylindrical structure with a certain wall thickness and open at both ends. The two ends of the pen barrel 3 are respectively provided with mounting sections 31 for positioning two pen head stabilizing structures. A partition 32 is arranged at the middle of the inner cavity of the pen barrel 3 to divide the inner cavity of the pen barrel 3 into two accommodating compartments 33. Two mounting sections 31 are respectively provided with pen head stabilizing structures, and two accommodating compartments 33 are respectively provided with ink core tubes 4. To ensure the fixation of the ink core tubes 4 in the pen barrel 3, the partition 32 is provided with four positioning ribs arranged around the axial direction on the two side surfaces corresponding to the accommodating compartments 33. The positioning ribs on one side surround a positioning space matching the outer diameter of the ink core tube 4 to fix the end of the ink core tube 4 facing the pen barrel 3 so that the radial and axial directions of the end are positioned.

[0044] Of course, the pen can also be a single-head pen according to requirements, in which case the use of accessories corresponding to one head can be reduced.

[0045] Further, the first sleeve 21 further comprises a connecting section 214 corresponding to the mounting section 31, a matching section 215 for positioning the cap 5, and an annular boss 216 arranged on the outer circumferential wall of the first sleeve 21; when the mounting section 31 of the barrel 3 is coaxially sleeved on the connecting section 214, the upper end surface of the annular boss 216 abuts against the lower end surface of the barrel 3 to limit the axial movement of the sharp sleeve 2; when the cap 5 is coaxially sleeved on the matching section 215, the lower end surface of the annular boss 216 abuts against the upper end surface of the cap 5 to limit the axial movement of the cap 5. Realistically, two outer ribs are arranged on the outer circumferential wall of the connecting section 214, two inner ribs are arranged on the inner circumferential wall of the connecting section corresponding to the mounting section 31, and the two outer ribs and the two inner ribs are arranged in a staggered manner, so that the sharp sleeve and the barrel are fixed in position in the radial direction. Correspondingly, the matching section 215 is provided with a rib on the circumferential wall surface corresponding to the cap 5, so as to realize positioning and facilitate the cap 5 to be separated from the sharp sleeve. In order to ensure the fastening force of the cap 5, the prior art sets a small protrusion on the inner circumferential wall of the cap, so that the cap and the sharp sleeve reach a specified matching force. It should be noted that the setting of protrusions and protrusions between fittings to achieve matching force is a prior art, which will not be described here.

[0046] Further, the connecting section 214 is provided with a placement channel 2141 in communication with the matching channel 213; when the tip stabilizing structure is installed in the barrel 3, the lower end surface of the ink core tube 4 abuts against the limiting portion 211, and the tail portion 12 of the tip 1 is inserted into the ink core tube 4. That is, the upper end surface of the limiting protrusion 212 is a certain distance away from the upper end opening of the sharp sleeve to form the placement channel 2141, and the inner diameter of the placement channel 2141 is matched with the outer diameter of the ink core tube 4. At this time, the distance between the limiting portion 211 corresponding to one end and the inner partition 32 of the barrel is matched with the length of the ink core tube 4 to satisfy the positioning and fixing of the ink core tube 4, and also to ensure the stable contact between the tail portion 12 of the tip 1 and the ink core tube 4.

[0047] Further, referring to Figure 2To realize the applicability of the pen, the pen head structure with different writing parts 13 is provided, and the tail part 12 of the pen head is provided with a prism on the side away from the rod part 11 to ensure the contact area of the tail part of the pen head inserted into the ink core tube 4 and improve the ink absorption capacity of the tail part of the pen head. The writing part 13 of one of the two pen heads 1 is conical 131 or bullet-shaped, so that the writing part 13 can outline and emphasize the handwriting. The writing part 13 of the other pen head 1 is axe-shaped 132, and the lower end surface of the writing part 13 is an inclined end surface 1321, and the two ends of the inclined end surface 1321 in the length direction are connected with the two sides of the outer peripheral wall of the writing part 13 at acute and obtuse angles, respectively, so that the writing part 13 can have the effect of uniform smearing in use and improve the drawing efficiency. In use, the applicable writing part can be selected according to the requirement. In addition, by setting different shapes of the writing part, the user can first use the axe-shaped writing part to draw the base color, and then use the conical writing part to draw the picture in a specific direction, so that the drawing effect of color overlay is realized on the base color, so that the picture is more realistic, and the level and color are more abundant. That is, by setting different shapes of the writing part, the drawing effect of color overlay can be realized by repeatedly selecting different color matching pens according to the requirement of the drawing color.

[0048] In summary, the pen head stable structure and the pen with the pen head stable structure have the advantages that the pen head is stably fixed by simple structure design, the phenomenon of easy pulling out due to external force is avoided, and the use safety and stability of the pen are improved. The outlet end of the sharp sleeve is set as a regular polygon structure tangent to the pen head peripheral surface, so that the exhaust performance required by the pen product is ensured, and the end of the pen head close to the writing part is stably surrounded, and the stability during writing is improved. In addition, by setting different shapes of the writing part, the requirement of the number of color overlays and the color of the drawing enthusiasts is greatly improved.

[0049] In the above description, many specific details are described in order to fully understand the present application. However, the above description is only a preferred embodiment of the present application, and the present application can be implemented in many other ways different from the description. Therefore, the present application is not limited to the above disclosed specific embodiments. Meanwhile, any person skilled in the art can make many possible changes and modifications to the technical solution of the present application by using the disclosed methods and technical contents without departing from the scope of the technical solution of the present application, or modify equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solution of the present application shall still fall within the scope of protection of the technical solution of the present application.

Claims

1. A pen point stable structure, comprising a pen point (1) and a point sleeve (2), and taking the direction of the pen in the writing state as the reference direction, characterized in that: the pen point (1) is integrally formed by a rod part (11) and tail part (12) and writing part (13) arranged on the upper and lower ends of the rod part (11) respectively, wherein the diameter of the tail part (12) is larger than that of the rod part (11) so as to form a stop part (14) between the rod part (11) and the tail part (12); the pen point (1) is fixedly arranged in the point sleeve (2) with the writing part (13) extending out of the point sleeve (2), the point sleeve (2) comprises a first sleeve (21) and a second sleeve (22) with the inner diameter decreasing from top to bottom, the first sleeve (21) is provided with a limiting part (211) on the inner wall corresponding to the stop part (14), and the inner wall of the second sleeve (22) is in a regular polygon structure and is coaxially arranged on the outer wall of the rod part (11) in a tangent manner. a plurality of limiting ribs (212) are arranged on the inner wall of the first sleeve (21) in a spaced manner and close to the central axis of the first sleeve (21) in the radial direction, so that the upper end faces of the limiting ribs (212) form the limiting part (211); a fitting channel (213) is formed around the side wall of the side of the limiting ribs (212) away from the inner wall of the first sleeve (21), the fitting channel (213) is coaxially arranged and communicated with the first sleeve (21), and the rod part (11) of the pen point (1) passes through the fitting channel (213) coaxially, and the stop part (14) is pressed on the limiting part (211).

2. The pen point stabilizing structure of claim 1, wherein: the inner wall of the second sleeve (22) extends upward along the axial direction to form a guide boss (221) in the first sleeve (21), the lower end of the limiting ribs (212) is connected to the outer wall of the guide boss (221), and an interference boss (222) is arranged around the upper end inner wall of the guide boss (221), the inner diameter of the interference boss (222) is slightly smaller than the diameter of the rod part (11) of the pen point (1), so that the outer wall of the rod part (11) corresponding to the interference boss (222) is clamped and fixed. a guide edge (223) is arranged on the inner wall of the second sleeve (22) corresponding to each corner, the guide edge (223) extends from the lower end face of the second sleeve (22) to the lower end face of the guide boss (221), and a V-shaped groove (224) is arranged on the lower end face of the second sleeve (22) opposite to each guide edge (223).

3. The pen point stabilizing structure of claim 2, wherein: the first sleeve (21) and the second sleeve (22) have a conical transition sleeve (23) therebetween.

4. The pen point stabilizing structure of claim 3, wherein: comprising:

5. The pen point stabilizing structure of claim 4, wherein: a pen barrel (3); 6. A pen characterized by an ink core tube (4) accommodated in the pen barrel (3); ​ ​ The pen head stabilizing structure of any one of claims 1-5 is mounted on the pen barrel (3), the upper end of the tip sleeve (2) is positioned at the end of the pen barrel (3), so that the tail (12) of the pen head (1) extends into the pen barrel (3) and contacts the ink core tube (4) to absorb ink; The pen cap (5) covers the tip sleeve (2) and accommodates the writing part (13) of the pen head (1) therein.

7. A pen according to claim 6, characterised in that: The pen barrel (3) is integrally formed by injection molding of plastic material, and the two ends of the pen barrel (3) are respectively provided with mounting sections (31) for positioning two pen head stabilizing structures; The middle part of the inner cavity of the pen barrel (3) is provided with a partition (32) to divide the inner cavity of the pen barrel (3) into two accommodation compartments (33), the two mounting sections (31) are respectively provided with the pen head stabilizing structures, and the two accommodation compartments (33) are respectively provided with the ink core tubes (4).

8. A pen according to claim 7, characterised in that: The first sleeve (21) further includes a connecting section (214) corresponding to the mounting section (31), a matching section (215) for positioning the pen cap (5), and an annular boss (216) annularly arranged on the outer peripheral wall of the first sleeve (21); When the mounting section (31) of the pen barrel (3) is coaxially sleeved on the connecting section (214), the upper end surface of the annular boss (216) abuts against the lower end surface of the pen barrel (3), and when the pen cap (5) is coaxially sleeved on the matching section (215), the lower end surface of the annular boss (216) abuts against the upper end surface of the pen cap (5).

9. A pen according to claim 8, characterised in that: The connecting section (214) is provided with a mounting channel (2141) in communication with the matching channel (213), when the pen head stabilizing structure is mounted on the pen barrel (3), the lower end surface of the ink core tube (4) abuts against the limiting part (211), and the tail (12) of the pen head (1) is inserted into the ink core tube (4).

10. A pen according to claim 9, characterised in that: The two pen heads (1) are formed of fiber material, the side of the tail (12) away from the rod part (11) is provided with a prism; the writing part (13) of one of the two pen heads (1) is conical (131), and the writing part (13) of the other is axe-shaped (132), and the lower end surface thereof is an inclined end surface (1321), the two ends of the length direction of the inclined end surface (1321) are respectively connected with the two sides of the outer peripheral wall of the writing part at acute and obtuse angles.

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