Press-type writing pen

Abstract

The present invention discloses a push-type writing pen, comprising: a pen barrel, an access hole is provided at one end of the pen barrel, and a positioning portion is further provided on the inner wall of the pen barrel near the access hole; a spring; an ink tube, a pen tip is provided at one end of the ink tube, and a mounting portion is further provided on the ink tube; a sealing assembly, the sealing assembly includes a connecting tube and a sealing sleeve, a movably sealing portion is provided at one end of the connecting tube, a connecting portion is further provided on the sealing portion, the sealing portion is used to selectively cover the port of the sealing sleeve, and the connecting portion connects the sealing sleeve; wherein, the ink tube is slidably arranged in the pen barrel, the sealing assembly is arranged in the pen barrel, both the connecting tube and the sealing sleeve are sleeved on the ink tube, the sealing sleeve also abuts against the positioning portion, and the spring is located between the mounting portion and the sealing sleeve. The overall structure of the push-type writing pen is simplified to facilitate assembly and improve the reliability of use.

Description

Technical Field

[0001] The present invention relates to a stationery, and particularly to a push-type writing pen. Background Art

[0002] At present, writing pens (such as signature pens, oil pens, gel pens, etc.) are essential stationery in people's daily life and work. According to different usage methods, writing pens are divided into: push-type writing pens and cap-type writing pens, and push-type writing pens are widely used because of their convenient operation. For push-type writing pens using ink, the anti-drying protection of the pen tip is particularly important. For example, Chinese Patent Publication Nos. CN104827805B and CN108621640B respectively disclose a writing tool with an anti-drying device, which includes a pen barrel, an ink tube, and a sealing component. Among them, the ink tube and the sealing component are located in the pen barrel, and the pen tip end of the ink tube can be sealed and protected through the sealing component. However, the sealing component in the prior art is composed of multiple components. On the one hand, the assembly process is cumbersome, and on the other hand, the lid is prone to jamming during the sliding process in the chute, resulting in low usage reliability. In view of this, how to design a stationery with a simple structure, convenient assembly, and improved usage reliability is the technical problem to be solved by the present invention. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a push-type writing pen, which simplifies the overall structure of the push-type writing pen for convenient assembly and improves the usage reliability.

[0004] The technical solution provided by the present invention is a push-type writing pen, including:

[0005] A pen barrel, one end of the pen barrel is provided with an access hole, and a positioning portion is further provided on the inner wall of the pen barrel near the access hole;

[0006] A spring;

[0007] An ink tube, one end of the ink tube is provided with a pen tip, and an installation portion is further provided on the ink tube;

[0008] A sealing assembly, the sealing assembly includes a connecting tube and a sealing sleeve, one end of the connecting tube is provided with a movably sealing portion, a connecting portion is further provided on the sealing portion, the sealing portion is used to selectively cover the port of the sealing sleeve, and the connecting portion connects the sealing sleeve;

[0009] Wherein, the ink tube is slidably arranged in the pen barrel, the sealing assembly is arranged in the pen barrel, the connecting tube and the sealing sleeve are both sleeved on the ink tube, the sealing sleeve also abuts against the positioning portion, and the spring is located between the installation portion and the sealing sleeve;

[0010] In a state where the refill is retracted into the access hole, the refill is located within the seal sleeve, and the sealing portion is located between the refill and the access hole and covers the port of the seal sleeve.

[0011] In a state where the refill extends out of the access hole, the sealing portion is located on one side of the seal sleeve.

[0012] Furthermore, the refill passes through the port of the seal sleeve, and the seal sleeve pulls the sealing portion to one side of the seal sleeve through the connecting portion.

[0013] Furthermore, the ink tube can drive the connecting tube to slide within the pen barrel, and the seal sleeve pulls the sealing portion to move through the connecting portion to open and close the port of the seal sleeve.

[0014] Furthermore, a convex portion is provided on the outer wall of the seal sleeve, and the convex portion abuts against the positioning portion.

[0015] Furthermore, the connecting portion has a clamping hole, and the connecting portion is clamped on the convex portion through the clamping hole.

[0016] Furthermore, the connecting tube, the sealing portion, and the connecting portion are of an integral structure.

[0017] Furthermore, two oppositely arranged extension portions are provided at the end of the connecting tube close to the access hole, a first flexible portion is provided between the extension portion and the sealing portion, and a second flexible portion is provided between the sealing portion and the connecting portion.

[0018] Furthermore, a engaging portion is provided at the other end of the connecting tube, and a pushing portion is also provided on the ink tube. The pushing portion is used to abut against the engaging portion to push the connecting tube to move relative to the pen barrel.

[0019] Furthermore, the engaging portion is an elastic member provided on the connecting tube. The free end of the elastic member is used to cooperate with the pushing portion, a limiting protrusion is provided on the outer surface of the free end of the elastic member, and a limiting hole for cooperating with the limiting protrusion is provided on the side wall of the pen barrel;

[0020] In a state where the sealing portion leaves the port of the seal sleeve and is located on one side of the seal sleeve, the limiting protrusion is stuck in the limiting hole.

[0021] Furthermore, the pushing portion is a second step surface formed on the ink tube, and a chamfer structure is formed at the edge of the second step surface.

[0022] Further, a first guide groove extending along the length direction is provided on the inner wall of the pen barrel, a first slider is provided on the outer wall of the connecting pipe, and the first slider is slidably arranged in the first guide groove.

[0023] Further, a limiting block is provided on the outer surface of the connecting portion, and the limiting block is also located in the first guide groove.

[0024] Further, a second guide groove is provided on the pipe wall of the connecting pipe, a second slider is provided on the pipe wall of the ink pipe, and the second slider is slidably arranged in the second guide groove.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The push-type writing pen provided by the present invention seals the refill on the ink pipe by configuring a sealing assembly. In the non-use state, the sealing portion on the connecting pipe cooperates with the sealing sleeve, and the sealing portion shields the port of the sealing sleeve to seal the refill in the sealing sleeve. When the user presses the writing pen to make the refill extend to the outside of the access hole, the sealing sleeve pulls the sealing portion to move through the connecting portion, so that the sealing portion leaves the port of the sealing sleeve, and then the refill can pass through the sealing sleeve and extend to the outside of the pen barrel. For the sealing assembly, it only includes a connecting pipe and a sealing sleeve, and the overall structure is simple and compact, making the assembly more convenient and simple. Moreover, the connecting pipe and the sealing sleeve are connected through the connecting portion, and the connection reliability is relatively high. Therefore, during the later use process, it is more beneficial to improve the use reliability of the writing pen. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the push-type writing pen embodiment of the present invention in the closed state;

[0028] Figure 2 It is a schematic structural diagram of the push-type writing pen embodiment of the present invention in the open state;

[0029] Figure 3 It is a schematic partial structural diagram of the push-type writing pen embodiment of the present invention in the closed state;

[0030] Figure 4 It is a schematic partial structural diagram of the push-type writing pen embodiment of the present invention in the open state;

[0031] Figure 5Partial cross-sectional view of the push-type writing pen according to the embodiment of the present invention in the closed state;

[0032] Figure 6 Partial cross-sectional view of the push-type writing pen according to the embodiment of the present invention in the open state;

[0033] Figure 7 Schematic structural diagram of the connecting pipe in the push-type writing pen according to the embodiment of the present invention.

[0034] Reference numerals:

[0035] Pen barrel 1;

[0036] Access hole 11, positioning portion 12, limiting hole 13, first guide groove 14;

[0037] Spring 2;

[0038] Ink tube 3;

[0039] Refill 31, mounting portion 32, pushing portion 33, second slider 34;

[0040] Sealing assembly 4;

[0041] Connecting pipe 41, sealing sleeve 42;

[0042] Sealing portion 411, connecting portion 412, clamping hole 413, extension portion 414, first flexible portion 415, second flexible portion 416, engaging portion 417, limiting projection 418, second guide groove 419, first slider 401, limiting block 402, protruding portion 421. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] As Figures 1-7 shown, the push-type writing pen of this embodiment includes:

[0045] A pen barrel 1, an access hole 11 is provided at one end of the pen barrel 1, and a positioning portion 12 is further provided on the inner wall of the pen barrel 1 near the access hole 11;

[0046] Spring 2;

[0047] The ink tube 3 is filled with ink, and the ink can be adsorbed in the cotton core in the ink tube 3. One end of the ink tube 3 is provided with a refill 31, and the ink tube 3 is also provided with a mounting portion 32;

[0048] The sealing assembly 4 includes a connecting tube 41 and a sealing sleeve 42. One end of the connecting tube 41 is provided with a movably sealing portion 411, and the sealing portion 411 is further provided with a connecting portion 412. The sealing portion 411 is used to selectively cover the port of the sealing sleeve 42, and the connecting portion 412 connects the sealing sleeve 42;

[0049] Wherein, the ink tube 3 is slidably arranged in the pen barrel 1, the sealing assembly 4 is arranged in the pen barrel 1, both the connecting tube 41 and the sealing sleeve 42 are sleeved on the ink tube 3, the sealing sleeve 42 also abuts against the positioning portion 12, and the spring 2 is located between the mounting portion 32 and the sealing sleeve 42;

[0050] In the state where the refill 31 retracts into the access hole 11, the refill 31 is located in the sealing sleeve 42, and the sealing portion 411 is located between the refill 31 and the access hole 11 and covers the port of the sealing sleeve 42;

[0051] In the state where the refill 31 extends out of the access hole 11, the sealing portion 411 is located on one side of the sealing sleeve 42.

[0052] Specifically, during the actual assembly process, the sealing sleeve 42 in the sealing assembly 4 is connected to the connecting portion 412 of the connecting tube 41. Then, the sealing sleeve 42 and the connecting tube 41 are sleeved on the outside of the ink tube 3, and the spring 2 is clamped between the mounting portion 32 and the sealing sleeve 42. Finally, the ink tube 3 and the sealing assembly 4 are installed into the pen barrel 1, and the sealing sleeve 42 will abut against the positioning portion 12 in the pen barrel 1 to complete the assembly.

[0053] Among them, for a push-type writing pen, it is correspondingly configured with components such as a pen cap and a push structure. The pen cap is generally installed on the ink tube 3 to facilitate the user to press the pen cap to drive the ink tube 3 to move, and the push structure is used to position the refill 31 of the ink tube 3 after it extends out. The specific structural form can refer to the structure of a pen with a push function in the conventional technology, and will not be limited and elaborated here.

[0054] During use, when the user does not use the pen, the refill 31 retracts into the pen barrel 1 and is located inside the sealing sleeve 42. At this time, the sealing part 411 covers the port of the sealing sleeve 42, so that the exposed part of the refill 31 is located in the relatively enclosed space formed by the sealing sleeve 42 and the sealing part 411, thereby preventing the refill 31 from drying out. When the user needs to write, by pressing the pen cap, the ink tube 3 moves towards the access hole 11. The ink tube 3 will drive the connecting tube 41 to slide in the pen barrel 1 together. Since the sealing sleeve 42 is positioned in cooperation with the positioning part 12 and cannot move, the sealing sleeve 42 pulls the sealing part 411 to move through the connecting part 412 to open and close the port of the sealing sleeve 42. Finally, the refill 31 passes through the port of the sealing sleeve 42, the refill 31 exposes from the access hole 11, and the sealing sleeve 42 pulls the sealing part 411 to one side of the sealing sleeve 42 through the connecting part 412.

[0055] During the assembly process, for the sealing component 4, only the connecting part 412 needs to be installed on the sealing sleeve 42 to complete the assembly, which can effectively simplify the assembly process. During use, the sealing sleeve 42 pulls the sealing part 411 to open through the connecting part 412, and there is no need for guidance outside the sealing part 411, which can effectively avoid jamming due to chute guidance, thereby improving the reliability of use.

[0056] Furthermore, a protrusion 421 is provided on the outer wall of the sealing sleeve 42, and the protrusion 421 abuts against the positioning part 12.

[0057] Specifically, in order to facilitate the installation and positioning of the sealing sleeve 42, a first stepped surface is formed inside the pen barrel 1, and the first stepped surface is arranged close to the access hole 11. After the ink tube 3 and the sealing component 4 are installed in the pen barrel 1, the protrusion 421 will abut against the first stepped surface.

[0058] Still further, the connecting part 412 has a clamping hole 413, and the connecting part 412 is clamped on the protrusion 421 through the clamping hole 413.

[0059] Specifically, when the connecting tube 41 and the sealing sleeve 42 are assembled, the clamping hole 413 formed by the connecting part 412 is clamped on the protrusion 421, so that the connecting part 412 is connected to the sealing sleeve 42. Assembling the connecting tube 41 and the sealing sleeve 42 by means of clamping can more effectively improve the assembly efficiency and simplify the assembly process. In addition, the connecting part 412 is clamped on the protrusion 421 on one side of the sealing sleeve 42, enabling the connecting part 412 to easily pull the sealing part 411 to one side of the sealing sleeve 42 to open the port of the sealing sleeve 42.

[0060] Preferably, the connecting pipe 41, the sealing part 411 and the connecting part 412 are of an integral structure. Specifically, the sealing part 411 and the connecting part 412 on the connecting pipe 41 adopt an integrally formed structural form. For example, it can be processed by injection molding. In order to enable the sealing part 411 to be movably connected relative to the connecting pipe 41, two oppositely arranged extension parts 414 are provided at the end of the connecting pipe 41 close to the access hole 11. A first flexible part 415 is provided between the extension part 414 and the sealing part 411, and a second flexible part 416 is provided between the sealing part 411 and the connecting part 412.

[0061] Specifically, the connecting pipe 41 is processed by injection molding, and the injection molding material is generally a material with certain elasticity such as plastic. For the first flexible part 415 and the second flexible part 416, they can be processed by the way of local dimension narrowing. On the one hand, it enables the sealing part 411 to be reliably connected to the connecting pipe 41 and the connecting part 412. On the other hand, the first flexible part 415 and the second flexible part 416 themselves can deform under force and automatically reset when the force gradually decreases to meet the requirements of the movable connection of the sealing part 411.

[0062] Furthermore, in order to facilitate the ink pipe 3 to drive the connecting pipe 41 to slide in the pen barrel 1, a clamping part 417 is provided at the other end of the connecting pipe 41, and a pushing part 33 is also provided on the ink pipe 3. The pushing part 33 is used to abut against the clamping part 417 to push the connecting pipe 41 to move relative to the pen barrel 1.

[0063] Specifically, when the user presses the pen to make the ink pipe 3 move towards the access hole 11, the pushing part 33 abuts against the clamping part 417, so that the ink pipe 3 drives the connecting pipe 41 to move together. During the movement of the connecting pipe 41, the sealing sleeve 42 applies a force to the sealing part 411 through the connecting part 412, thereby causing the first flexible part 415 and the second flexible part 416 to deform. Finally, the sealing part 411 disengages from the port of the sealing sleeve 42 and moves to a position on one side of the sealing sleeve 42. The cooperation mode of the clamping part 417 and the pushing part 33 can adopt the structural form in the conventional technology and is not limited here.

[0064] Among them, since the stroke required for the pen core 31 to extend is relatively large, in order to prevent the connecting pipe 41 from moving too far and causing the flexible part to break, the moving stroke of the connecting pipe 41 is limited. For this purpose, the clamping part 417 is an elastic part provided on the connecting pipe 41. The free end of the elastic part is used to cooperate with the pushing part 33, and a limiting protrusion 418 is provided on the outer surface of the free end of the elastic part. A limiting hole 13 for cooperating with the limiting protrusion 418 is provided on the side wall of the pen barrel 1; in the state where the sealing part 411 leaves the port of the sealing sleeve 42 and is located on one side of the sealing sleeve 42, the limiting protrusion 418 is stuck in the limiting hole 13.

[0065] Specifically, during the process of the ink tube 3 driving the connecting tube 41 to move towards the access hole 11, the pushing portion 33 will abut against the free end of the elastic member. At this time, the limiting protrusion 418 on the elastic member will abut against the inner wall of the pen barrel 1, and the elastic member is restricted by the inner wall of the pen barrel 1 and cannot bend outward. Thus, the pushing portion 33 can push against the elastic member to drive the connecting tube 41 to move. When the limiting protrusion 418 moves and snaps into the limiting hole 13, the elastic member bends outward by itself, and thus the free end of the elastic member disengages from the pushing portion 33. The pushing portion 33 continues to move with the ink tube 3 and passes over the free end of the elastic member. At this time, the connecting tube 41 cannot continue to move because the limiting protrusion 418 is stuck in the limiting hole 13.

[0066] Among them, the pushing portion 33 is a second stepped surface formed on the ink tube 3, and a chamfer structure is formed at the edge of the second stepped surface. Specifically, the chamfer structure of the second stepped surface can be in guiding cooperation with the free end of the elastic member, so that the pushing portion 33 can smoothly pass over the elastic member, and thus the smoothness of pressing is ensured. In addition, for the ink tube 3, a variable-diameter structural form can be adopted. The diameter of the ink tube 3 is thinner near the pen core 31 and thicker away from the pen core 31, and thus a second stepped surface is formed at the intersection of the thick and thin parts. The variable-diameter design enables that when the ink tube 3 drives the pen core 31 to retract, after the elastic member passes over the second stepped surface from the thicker part of the ink tube 3, the elastic member is not squeezed by the wall of the thicker ink tube 3 and elastically resets to disengage from the limiting hole 13, and thus the connecting tube 41 can reset with the ink tube 3.

[0067] During the retraction process of the pen core 31, in order to enable the connecting tube 41 to reliably and effectively reset, a second guide groove 419 is provided on the wall of the connecting tube 41, and a second slider 34 is provided on the wall of the ink tube 3. The second slider 34 is slidably arranged in the second guide groove 419. Specifically, the cooperation between the second guide groove 419 and the second slider 34 can, on the one hand, enable the connecting tube 41 and the ink tube 3 to slide relative to each other smoothly, and on the other hand, when the spring 2 drives the ink tube 3 to reset, the second slider 34 is stuck at the end of the second guide groove 419 to pull the connecting tube 41 to move together, thereby realizing the effective reset of the connecting tube 41. During the reset process of the connecting tube 41, the first flexible portion 415 and the second flexible portion 416 also elastically reset at the same time, and finally the sealing portion 411 covers the port of the sealing sleeve 42.

[0068] Further, a first guide groove 14 extending along the length direction is provided on the inner wall of the pen barrel 1, and a first slider 401 is provided on the outer wall of the connecting pipe 41. The first slider 401 is slidably arranged in the first guide groove 14. Specifically, during the movement of the connecting pipe 41, the first slider 401 cooperates with the first guide groove 14 to ensure smooth sliding. Among them, a limiting block 402 is provided on the outer surface of the connecting portion 412, and the limiting block 402 is also located in the first guide groove 14. In this way, through the cooperation of the slider, the limiting block and the first guide, it is ensured that during the assembly process, the operator accurately installs the ink tube 3 and the connecting pipe 41 through the guidance of the first guide groove 14. For the positioning portion 12, it can be the end face of the first guide groove 14 close to the access hole 11. Correspondingly, the convex portion 421 is also located in the first guide groove 14 and abuts against the end position of the first guide groove 14.

[0069] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The push-type writing pen provided by the present invention seals the refill on the ink tube by configuring a sealing component. In the non-use state, the sealing portion on the connecting pipe cooperates with the sealing sleeve, and the sealing portion blocks the port of the sealing sleeve to seal the refill in the sealing sleeve. When the user presses the writing pen to make the refill extend out of the access hole, the sealing sleeve pulls the sealing portion to move through the connecting portion, so that the sealing portion leaves the port of the sealing sleeve, and then the refill can pass through the sealing sleeve and extend out of the pen barrel. For the sealing component, it only includes a connecting pipe and a sealing sleeve, and the overall structure is simple and compact, making the assembly more convenient and simple. Moreover, the connecting pipe and the sealing sleeve are connected through the connecting portion, and the connection reliability is relatively high. Therefore, during the later use process, it is more beneficial to improve the use reliability of the writing pen.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A push-type writing pen, characterized in that, it includes: A pen barrel, one end of the pen barrel is provided with an access hole, and a positioning portion is further provided on the inner wall of the pen barrel near the access hole; A spring; An ink tube, one end of the ink tube is provided with a pen tip, and an installation portion is further provided on the ink tube; A sealing assembly, the sealing assembly includes a connecting tube and a sealing sleeve, one end of the connecting tube is provided with a movably sealing portion, a connecting portion is further provided on the sealing portion, and the sealing portion is used to selectively cover the port of the sealing sleeve, and the connecting portion connects the sealing sleeve; The connecting tube, the sealing portion and the connecting portion are of an integral structure, two oppositely arranged extension portions are provided at the end of the connecting tube near the access hole, a first flexible portion is provided between the extension portion and the sealing portion, and a second flexible portion is provided between the sealing portion and the connecting portion; Wherein, the ink tube is slidably arranged in the pen barrel, the sealing assembly is arranged in the pen barrel, the connecting tube and the sealing sleeve are both sleeved on the ink tube, the sealing sleeve also abuts against the positioning portion, and the spring is located between the installation portion and the sealing sleeve; In the state where the pen tip retracts into the access hole, the pen tip is located in the sealing sleeve, and the sealing portion is located between the pen tip and the access hole and covers the port of the sealing sleeve; In the state where the pen tip extends out of the access hole, the sealing portion is located on one side of the sealing sleeve.

2. The push-type writing pen according to claim 1, characterized in that, A convex portion is provided on the outer wall of the sealing sleeve, and the convex portion abuts against the positioning portion.

3. The push-type writing pen according to claim 2, characterized in that, The connecting portion has a clamping hole, and the connecting portion is clamped on the convex portion through the clamping hole.

4. The push-type writing pen according to claim 1, characterized in that, A clamping portion is provided at the other end of the connecting tube, and a pushing portion is further provided on the ink tube, and the pushing portion is used to abut against the clamping portion to push the connecting tube to move relative to the pen barrel.

5. The push-type writing pen according to claim 4, characterized in that, The clamping portion is an elastic member provided on the connecting tube, the free end of the elastic member is used to cooperate with the pushing portion, a limiting protrusion is provided on the outer surface of the free end of the elastic member, and a limiting hole for cooperating with the limiting protrusion is provided on the side wall of the pen barrel; In the state where the sealing portion leaves the port of the sealing sleeve and is located on one side of the sealing sleeve, the limiting protrusion is clamped in the limiting hole.

6. The push-type writing pen according to claim 5, characterized in that, The pushing portion is a second stepped surface formed on the ink tube, and a chamfer structure is formed at the edge of the second stepped surface.

7. The push-type writing pen according to claim 1, characterized in that, A first guide groove extending in the length direction is provided on the inner wall of the pen barrel, and a first slider is provided on the outer wall of the connecting tube, and the first slider is slidably arranged in the first guide groove.

8. The push-type writing pen according to claim 7, characterized in that, a limiting block is arranged on the outer surface of the connecting part, and the limiting block is also located in the first guide groove.

9. The push-type writing pen according to claim 1, characterized in that, a second guide groove is arranged on the pipe wall of the connecting pipe, a second sliding block is arranged on the pipe wall of the ink pipe, and the second sliding block is slidably arranged in the second guide groove.

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