Push-pull writing pen

Abstract

The utility model discloses a push-pull type writing pen which comprises a pen holder and a pen core, the pen core is arranged in the pen holder, and a pen point of the pen core extends out of the pen holder. The push-pull type writing pen further comprises a sealing assembly, the sealing assembly comprises a sleeve and a sealing piece, an opening is formed in one end of the sleeve, a turnover sealing part is arranged on the sealing piece, the sealing piece is located in the sleeve, and the sealing part is configured to open and close the opening. Wherein the sealing piece is arranged outside the pen holder, and the sleeve is arranged outside the pen holder in a sleeving mode and can slide on the pen holder; the sleeve is configured to slide on the pen holder to drive the sealing component to turn over so as to open and close the opening. Misoperation is reduced, so that the use experience and safety of a user are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of writing tools, in particular to a push-pull type writing pen. Background Art

[0002] At present, writing pens are indispensable stationery in people's daily life and work. The nibs of some types of writing pens need to be sealed when not in use. The methods for achieving the sealing are generally divided into: push-pull writing pens and cap-type writing pens. Push-pull writing pens are widely used because they are easy to operate. For example, Chinese patent publications CN116215117A and CN116215117A respectively disclose a push-pull writing pen, both of which use a pressing method to drive the pen core to slide in the pen barrel so that the shielding part in the sealing component flips over. In this way, the pen core can be sealed in the pen barrel through the shielding part, or the shielding part flips open so that the nib of the pen core extends out of the pen barrel. However, in actual use, the pressing part at the end of the pen barrel is easily pressed by mistake due to external force, causing the nib of the pen core to extend. On the one hand, it is easy to cause the nib to lose moisture and be unable to write, and on the other hand, it is easy to cause the user's clothes or paper to be contaminated. In view of this, how to design a technology to reduce misoperation to improve user experience and safety is the technical problem to be solved by the present utility model. Utility Model Content

[0003] The utility model provides a push-pull type writing pen, which can reduce misoperation and improve user experience and safety.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a push-pull writing pen, comprising a pen holder and a pen core, wherein the pen core is arranged in the pen holder, and a pen head of the pen core extends out of the pen holder;

[0006] The pen tip of the pen core extends out of the pen holder; a positioning portion is provided on the pen holder, and a positioning matching portion matching with the positioning portion is provided on the sleeve;

[0007] The push-pull writing pen further comprises a sealing assembly, which comprises a sleeve and a sealing member, an opening is formed at one end of the sleeve, a reversible sealing component is arranged on the sealing member, the sealing member is located in the sleeve, and the sealing component is configured to open and close the opening;

[0008] Wherein, the sealing component is arranged on the outside of the pen barrel, and the sleeve is sleeved on the outside of the pen barrel and can slide on the pen barrel; the sleeve is configured to slide on the pen barrel to drive the sealing component to flip to open and close the opening.

[0009] Furthermore, when the sealing component is turned over to open the opening, the tip of the pen core is located outside the opening, and the sleeve is away from the tip of the pen core;

[0010] When the sealing component is flipped over to close the opening, the tip of the pen core is located inside the opening, and the tip of the pen core is located inside the sleeve.

[0011] Further, the sealing member comprises a first connecting member, a second connecting member and a flexible connecting member, the sealing member is arranged between the first connecting member and the second connecting member through the flexible connecting member, and the sealing member can be turned over relative to the first connecting member and the second connecting member;

[0012] The sleeve is provided with a pulling portion, and the pulling portion is configured to pull the first connecting component to slide together when the sleeve slides toward the pen head away from the pen core, so that the sealing component is exposed from the opening and flipped to open the opening.

[0013] Furthermore, a pushing portion is provided on the inner wall of the sleeve, and the pulling portion is located between the pushing portion and the opening; the pushing portion is configured to push the first connecting component to slide together when the sleeve slides toward the pen tip close to the pen core so that the sealing component flips and retracts into the opening to close the opening.

[0014] Further, the sleeve includes a first cylinder and a second cylinder, and the first cylinder and the second cylinder are detachably connected together;

[0015] The opening is formed at the end of the first cylinder, the pulling portion is provided on the inner wall of the first cylinder, and the pushing portion is provided on the inner wall of the second cylinder.

[0016] Furthermore, a sealing ring is also provided in the sleeve, and the sealing ring is sleeved on the outside of the pen shaft and is located between the pushing part and the sealing member.

[0017] Furthermore, when the sealing component is flipped over to open the opening, the positioning portion is connected to the positioning matching portion to position the sleeve at the position where the pen shaft is located and keep it stationary.

[0018] Furthermore, it also includes a spring, which is arranged between the sleeve and the pen body, and the spring is configured to apply a spring force to the sleeve in the direction of the pen tip of the pen core.

[0019] Furthermore, the spring is located in the sleeve.

[0020] Furthermore, the pen holder comprises a first rod body and a second rod body, and the first rod body and the second rod body are detachably connected together;

[0021] The pen core is inserted into the first rod body, the pen tip of the pen core extends out of the first rod body, and the second rod body is sleeved on the outside of the pen core.

[0022] Furthermore, an inserting portion is provided at the end of the pen shaft away from the pen tip of the pen core;

[0023] The plug-in portion is configured so that the pen barrels of the two push-pull type writing pens are plugged into each other from the side through the plug-in portion so that the two push-pull type writing pens are connected together.

[0024] Furthermore, the plug-in portion includes a slot and an inserting strip arranged side by side.

[0025] The technical solution of the utility model has the following technical effects compared with the prior art: by arranging a sealing component on the outside of the pen barrel, the sleeve is sleeved on the outside of the pen barrel and can slide on the outside of the pen barrel, and the sliding sleeve can drive the sealing component on the sealing component to flip over, thereby opening the opening of the sleeve to allow the pen tip of the pen tip to extend out of the opening for writing, or closing the opening to protect the pen tip of the pen tip; during use, when the opening needs to be opened for use, the user pulls the sleeve to make the sleeve slide on the pen barrel, and then drives the sealing component to flip open the opening to expose the pen tip of the pen core, so that it can avoid the exposure of the pen tip due to misoperation caused by pressing, thereby reducing misoperation to improve user experience and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of an embodiment of the push-pull writing pen of the utility model in a closed state;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the push-pull writing pen in the open state;

[0028] Figure 3 for Figure 1 A cross-sectional view of a push-pull writing pen;

[0029] Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle A area;

[0030] Figure 5 for Figure 2 A cross-sectional view of a push-pull writing pen;

[0031] Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle B area;

[0032] Figure 7 for Figure 1 Exploded view of the push-pull writing pen;

[0033] Figure 8 for Figure 1 A schematic diagram of the structure of the first cylinder;

[0034] Fig. 9 for Figure 1 A schematic diagram of the structure of the second cylinder;

[0035] Fig.10 for Figure 1 One of the structural diagrams of the middle seal;

[0036] Fig.11 for Figure 1 The second structural diagram of the middle seal;

[0037] Fig.12 This is a schematic diagram of the structure of two push-pull writing pens assembled together according to the utility model;

[0038] Fig.13 This is one of the structural schematic diagrams of the rod body in the utility model;

[0039] Fig.14 This is the second structural schematic diagram of the rod body in the utility model.

[0040] Reference numerals:

[0041] 1. Penholder; 11. Positioning part; 12. Insertion part; 13. Limiting part; 14. Limiting matching part; 15. Chamfering structure; 10. Rod body; 121. Slot; 122. Insertion strip; 123. Insertion port; 124. Extension part;

[0042] 2. Pen refill; 21. Pen tip;

[0043] 3. Sealing assembly; 31. Sleeve; 32. Sealing member; 33. Sealing ring; 311. Opening; 312. Pulling portion; 313. Pushing portion; 314. Positioning portion; 315. Positioning and fitting portion; 301. First cylinder; 302. Second cylinder; 321. Sealing member; 322. First connecting member; 323. Second connecting member; 324. Flexible connecting member; 3221. Pulling and fitting portion; 3222. Pushing and fitting portion; 3223. First elastic claw; 3231. Second elastic claw;

[0044] 4. Spring. DETAILED DESCRIPTION

[0045] Embodiment 1, as Figure 1-Figure 11As shown, the utility model provides a push-pull writing pen, comprising a pen holder 1 and a pen core 2, wherein the pen core 2 is arranged in the pen holder 1, and a pen head 21 of the pen core 2 extends out of the pen holder 1;

[0046] The push-pull writing pen further includes a sealing assembly 3, which includes a sleeve 31 and a sealing member 32. An opening 311 is formed at one end of the sleeve 31. A reversible sealing member 321 is provided on the sealing member 32. The sealing member 32 is located in the sleeve 31. The sealing member is configured to open and close the opening 311.

[0047] The sealing member 32 is arranged on the outside of the pen barrel 1 , and the sleeve 31 is sleeved on the outside of the pen barrel 1 and can slide on the pen barrel 1 ; the sleeve 31 is configured to slide on the pen barrel 1 to drive the sealing member 321 to flip to open and close the opening 311 .

[0048] Specifically, after the refill 2 is loaded into the pen holder 1, the pen tip 21 of the refill 2 is exposed outside the pen holder 1. In order to protect the pen tip 21, a sealing assembly 3 is provided outside the pen holder 1. The sleeve 31 in the sealing assembly 3 is sleeved outside the pen holder 1, and the sealing member 32 is located in the sleeve 31 and is also provided outside the pen holder 1.

[0049] When the sealing component 321 is flipped over to close the opening 311 , the tip 21 of the pen core 2 is located inside the opening 311 , and the tip 21 of the pen core 2 is located inside the sleeve 31 .

[0050] Specifically, when not in use, the sealing component 321 of the sealing member 32 blocks the opening 311 of the sleeve 31, thereby forming a relatively closed space between the sleeve 31, the sealing component 321 and the pen body 1, and the pen head 21 of the pen core 2 is located in the relatively closed space for protection.

[0051] In addition, when the sealing component 321 is flipped to open the opening 311 , the tip 21 of the pen core 2 is located outside the opening 311 , and the sleeve 31 is away from the tip 21 of the pen core 2 .

[0052] Specifically, when the user needs to use it, the sleeve 31 is pulled outside the pen barrel 1 to open it. The specific process is that the sleeve 31 slides outside the pen barrel 1 in a direction away from the pen head 21. During the sliding process of the sleeve 31, on the one hand, the sealing component 321 will be exposed from the opening 311, and on the other hand, the exposed sealing component 321 will flip open the opening 311 and finally make the pen tip of the pen core 2 extend out of the opening 311.

[0053] By setting a sealing component 3 on the outside of the pen barrel 1, the sleeve 31 is sleeved on the outside of the pen barrel 1 and can slide on the outside of the pen barrel 1. The sliding sleeve 31 can drive the sealing component 321 on the sealing member 32 to flip, thereby opening the opening 311 of the sleeve 31 to allow the pen tip 21 of the pen tip to extend out of the opening 311 for writing, or closing the opening 311 to protect the pen tip 21 of the pen tip; during use, when the opening 311 needs to be opened for use, the user pulls the sleeve 31 to make the sleeve 31 slide on the pen barrel 1, thereby driving the sealing component 321 to flip and open the opening 311 to expose the pen tip 21 of the pen core 2. In this way, it is possible to avoid exposure of the pen tip 21 due to misoperation caused by pressing, thereby reducing misoperation and improving user experience and safety.

[0054] In one embodiment, the sealing member 32 includes a first connecting member 322, a second connecting member 323 and a flexible connecting member 324, the sealing member 321 is disposed between the first connecting member 322 and the second connecting member 323 through the flexible connecting member 324, and the sealing member 321 can be flipped relative to the first connecting member 322 and the second connecting member 323;

[0055] The sleeve 31 is provided with a pulling portion 312, and the pulling portion 312 is configured to pull the first connecting component 322 to slide together when the sleeve 31 slides toward the pen head 21 away from the pen core 2, so that the sealing component 321 is exposed from the opening 311 and flipped to open the opening 311.

[0056] Specifically, in order to achieve the sliding of the sleeve 31 away from the pen head 21 to drive the sealing component 321 to flip and open the opening 311, a pulling portion 312 is provided on the inner wall of the sleeve 31. During the movement of the sleeve 31, the pulling portion 312 will apply a pulling force to the first connecting component 322, so that the first connecting component 322 can follow the sleeve 31 to move on the pen body 1. During the movement of the first connecting component 322 relative to the pen body 1, the first connecting component 322 will move relative to the second connecting component 323, and the flexible connecting component 324 is used to make the sealing component 321 flip between the first connecting component 322 and the second connecting component 323 to open the opening 311.

[0057] A protruding pull-fit portion 3221 is provided on the outer surface of the first connecting member, and the pulling portion 312 will be pressed against the pull-fit portion 3221 , so that the first connecting member follows the sleeve 31 to slide on the pen body 1 .

[0058] In another embodiment, a pushing portion 313 is provided on the inner wall of the sleeve 31, and the pulling portion 312 is located between the pushing portion 313 and the opening 311; the pushing portion 313 is configured to push the first connecting component 322 to slide together when the sleeve 31 slides toward the pen tip 21 close to the pen core 2 so that the sealing component 321 flips over and retracts into the opening 311 to close the opening 311.

[0059] Specifically, after use, the user pushes the sleeve 31 in the reverse direction to move the sleeve 31 toward the pen tip 21. During the movement of the sleeve 31, the pushing portion 313 pushes the first connecting member to move in the reverse direction, thereby enabling the first connecting member to slide toward the pen tip 21. During the sliding process, the sealing component 321 flips over and resets and finally blocks the opening 311 of the sleeve 31.

[0060] Likewise, a push fitting portion 3222 may be further configured on the first connecting member, and the first connecting member may be pushed back to its original position by the pushing portion 313 abutting against the push fitting portion 3222 .

[0061] In some embodiments, in order to ensure intermittent sliding of the first connecting member and the second connecting member during the reciprocating sliding of the sleeve 31, a first elastic claw 3223 may be provided on the first connecting member, a second elastic claw 3231 may be provided on the second connecting member, and a limiting portion 314 may also be provided in the sleeve 31.

[0062] Specifically, when the sealing component 321 is in a state of closing the opening 311 , the first elastic claw 3223 and the second elastic claw 3231 are staggered along the length direction of the pen barrel 1 , wherein the first elastic claw 3223 is close to the opening 311 , and the second elastic claw 3231 is far away from the opening 311 .

[0063] Thus, during the opening process, the sleeve 31 moves so that the first elastic claw 3223 and the second elastic claw 3231 arranged in a staggered manner sequentially pass over the limiting portion 314 and move to one side of the limiting portion 314. During this process, the pulling portion 312 gradually approaches the pulling matching portion 3221, the sealing member 32 remains substantially stationary, and the sealing member 321 is exposed from the opening 311.

[0064] As the sleeve 31 continues to move, the pulling portion 312 abuts against the pulling fitting portion 3221. At this time, the first connecting member will move with the sleeve 31, while the second connecting member will remain stationary because the second elastic claw 3231 is stuck on the limiting portion 314. In this way, the sealing component 321 can be flipped open.

[0065] In one embodiment, for the sleeve 31, in order to facilitate the assembly of the sealing member 32, the sleeve 31 includes a first cylinder 301 and a second cylinder 302, and the first cylinder 301 and the second cylinder 302 are detachably connected together;

[0066] The opening 311 is formed at the end of the first cylinder 301 , the pulling portion 312 is disposed on the inner wall of the first cylinder 301 , and the pushing portion 313 is disposed on the inner wall of the second cylinder 302 .

[0067] Specifically, in order to facilitate assembly, the sleeve 31 adopts a split design, a pulling portion 312 is provided on the first cylinder 301 , and a pushing portion 313 is provided on the second cylinder 302 .

[0068] In one embodiment, in order to improve the sealing performance, a sealing ring 33 is further provided in the sleeve 31 . The sealing ring 33 is sleeved on the outside of the pen barrel 1 and is located between the pushing portion 313 and the sealing member 32 .

[0069] Specifically, the opening 311 of the sleeve 31 is blocked and covered by a sealing component 321 , and the sleeve 31 and the pen body 1 are airtightly sealed by a sealing ring 33 .

[0070] In one embodiment, the pen holder 1 is provided with a positioning portion 11, and the sleeve 31 is provided with a positioning matching portion 315 matching with the positioning portion 11;

[0071] When the sealing component 321 is flipped over to open the opening 311 , the positioning portion 11 is connected to the positioning matching portion 315 to position the sleeve 31 at the position where the pen holder 1 is located and keep it stationary.

[0072] Specifically, after pulling the sleeve 31 to expose the pen tip 21, the sleeve 31 needs to be positioned to meet the user's normal writing requirements. When the sealing component 321 is flipped to open the opening 311, the positioning portion 11 and the positioning matching portion 315 are connected together to position the sleeve 31. The positioning portion 11 and the positioning matching portion 315 can be represented by a positioning rib and a positioning slot, or by two positioning ribs abutting against each other to achieve positioning.

[0073] In one embodiment, in order to maintain an effective closed state without force when the sealing component 321 closes the opening 311, the push-pull writing pen further comprises a spring 4, which is disposed between the sleeve 31 and the pen barrel 1, and is configured to apply a spring 4 force to the sleeve 31 in the direction of the pen head 21 of the pen core 2.

[0074] Specifically, when the opening 311 is closed by the sealing component 321, the spring 4 will always exert elastic force on the sleeve 31 to ensure that the sleeve 31 does not slide on the pen holder 1 at will. When the user needs to open the pen for use, he pulls the sleeve 31 to overcome the elastic force of the spring 4. The spring 4 is located in the sleeve 31.

[0075] Embodiment 2, as Figure 1 , Figure 12-14 As shown, in one embodiment of the present application, a spliced ​​push-pull writing pen is provided, comprising a pen barrel 1 and a pen core 2 , wherein the pen core 2 is arranged in the pen barrel 1 .

[0076] In order to facilitate users to carry different pens and switch between them, the end of the pen holder 1 away from the pen head 21 of the pen core 2 is provided with an inserting portion 12;

[0077] The plug-in portion 12 is configured such that the pen barrels 1 of the two push-pull type writing pens are plugged together from the side through the plug-in portion 12 so that the two push-pull type writing pens are connected together.

[0078] Specifically, a plug-in portion 12 is formed at the tail of the pen body 1 . When two push-pull writing pens need to be assembled, the tails of the two pen bodies 1 are brought close to each other and then plugged together from the side through the plug-in portion 12 .

[0079] Since the pen body includes two rod bodies 10, a port for the pen tip 21 of the pen core 2 to extend out is formed at one end of the rod body 10, and an inserting portion 12 is provided at the other end of the rod body 10; wherein, when the inserting portions 12 of the two rod bodies 10 are inserted together, the inserting portion 12 is configured to limit the separation of the two rod bodies 10 along the length direction of the rod bodies 10.

[0080] In actual use, the user can plug the two rod bodies 10 together from the side wall direction of the rod body 10 through the plug-in portion 12. After the two plug-in portions 12 are connected together, on the one hand, the two rod bodies 10 can be reliably connected together through the two plug-in portions 12, and on the other hand, the two plug-in portions 12 can effectively prevent the two rod bodies 10 from being separated and falling off along the length direction thereof because they are plugged from the side, thereby improving the reliability of use.

[0081] In one embodiment, the plug-in portion 12 includes a slot 121 and an inserting strip 122 arranged side by side.

[0082] Specifically, the slot 121 and the insertion strip 122 are formed on the end surface of the rod body 10, and the slot 121 forms an insertion opening 123 on the side wall of the rod body; after the two rod bodies are inserted together, the insertion strip on one rod body is inserted into the corresponding slot through the insertion opening on the other rod body.

[0083] During assembly, the inserting strip 122 of one pen holder 1 is inserted into the slot 121 of another pen holder 1 to ensure that the two pen holders 1 are securely connected together.

[0084] In another embodiment, a limited position portion 13 is provided in the slot 121, and a limited position matching portion 14 is provided on the inserting strip 122;

[0085] After the two rod bodies 10 are inserted together, the limiting portion 13 on one rod body 10 is connected to the limiting matching portion 14 on the other rod body 10 to limit the two rod bodies 10 on the connection surface formed by the two rod bodies 10 .

[0086] Specifically, during use, after the two rod bodies 10 are inserted together through the plug-in portion 12 and assembled in place, the limiting portion 13 and the limiting matching portion 14 are connected together, and then the limiting portion 13 and the limiting matching portion 14 cooperate with each other to limit the position between the two plug-in portions 12. In this way, during use, the limiting portion 13 and the limiting matching portion 14 limit the relative sliding of the two plug-in portions 12 along the length direction of the slot 121, so as to reduce the relative lateral separation of the two rod bodies 10, thereby improving the reliability of use.

[0087] In some embodiments, the limiting portion 13 and the limiting matching portion 14 may have various structural forms, for example, the limiting portion 13 is a first protrusion formed in the slot 121, and the limiting matching portion 14 is a first recessed portion formed on the inserting strip 122. Alternatively, the limiting portion 13 is a second recessed portion formed in the slot 121, and the limiting matching portion 14 is a second protrusion formed on the inserting strip 122.

[0088] In another embodiment, an extension portion 124 is disposed on the edge of the inserting strip 122 , and the extension portion 124 covers the outer side of the slot 121 .

[0089] Specifically, for the inserting strips 122 and the slots 121 formed on the end of the rod body 10 , at least two protruding inserting strips 122 arranged side by side may be formed on the end surface of the rod body 10 , and a slot 121 is formed between two adjacent inserting strips 122 .

[0090] In order to prevent the inserting strip 122 from escaping from the slot 121 , an extension portion 124 is provided at the edge of the inserting strip 122 , wherein the extension portion 124 on one rod body 10 can cooperate with the extension portion 124 on the other rod body 10 to form an overlapping area to limit the two rod bodies 10 from escaping along the length direction.

[0091] Furthermore, a limiting rib is provided on the bottom surface of the slot 121, and the extension portion 124 partially blocks the limiting rib; a limiting notch is provided on the inserting strip 122, and the opening of the limiting notch is arranged at the edge of the extension portion 124, and the projection of the area formed by the limiting notch along the length direction of the pen barrel 1 is located in the slot 121, and the limiting notch is located on the outside of the limiting rib; the limiting rib forms the limiting portion 13, and the limiting notch forms the limiting matching portion 14.

[0092] Specifically, since the rod body 10 is generally made of plastic and processed by mold injection, in the process of forming the insert 122, the slot 121, the limit portion 13 and the limit matching portion 14 at the end of the rod body 10, it is necessary to consider the demolding requirements during the mold processing process.

[0093] In particular, due to the restriction of the extension portion 124 additionally configured on the inserting strip 122 to prevent it from falling off, it will increase the difficulty of forming the limiting portion 13 in the slot 121 and the limiting matching portion 14 on the inserting strip 122. Therefore, by forming a limiting notch on the extension portion 124 to form the limiting matching portion 14, the difficulty of processing the limiting matching portion 14 on the inserting strip 122 can be reduced. At the same time, a limiting rib is provided in the slot 121 to cooperate with the limiting notch on the other rod body 10 to limit the position to meet the use requirements.

[0094] In another embodiment, the outer surface of the inserting strip 122 is provided with a chamfered structure 15 at the edge of the limiting notch.

[0095] Specifically, the chamfered structure 15 can meet the requirement of smooth demolding of the limiting notch on the one hand, and on the other hand, the chamfered structure 15 can better fit with the limiting ribs.

[0096] In another embodiment, the limiting rib is in an arc-shaped structure, and the edge of the limiting notch is also in an arc-shaped structure; the center of the projection shape of the area formed by the limiting notch along the length direction of the pen shaft 1 coincides with the center of the limiting rib.

[0097] Specifically, after the two plug-in parts 12 are plugged together, the limiting ribs of one rod body 10 are stuck in the limiting notch of the other rod body 10, and the limiting part 13 and the limiting matching part 14 between the two plug-in parts 12 will form a circular limiting connection surface, so as to more effectively and stably limit the two plug-in parts 12 to prevent deviation, and can further automatically align the two rod bodies 10, so that the center lines of the two plug-in rod bodies 10 coincide, thereby improving the comfort of use.

[0098] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A push-pull writing pen, comprising a pen holder and a pen core, wherein the pen core is arranged in the pen holder, characterized in that: The pen tip of the pen core extends out of the pen holder; a positioning portion is provided on the pen holder; The push-pull writing pen further comprises a sealing assembly, which comprises a sleeve and a sealing member, an opening is formed at one end of the sleeve, a reversible sealing component is arranged on the sealing member, the sealing member is located in the sleeve, and the sealing component is configured to open and close the opening; Wherein, the sealing component is arranged on the outside of the pen barrel, and the sleeve is sleeved on the outside of the pen barrel and can slide on the pen barrel; the sleeve is configured to slide on the pen barrel to drive the sealing component to flip to open and close the opening, and the sleeve is provided with a positioning matching part that cooperates with the positioning part.

2. The push-pull writing pen according to claim 1, characterized in that: When the sealing component is flipped over to open the opening, the tip of the pen core is located outside the opening, and the sleeve is away from the tip of the pen core.

3. The push-pull writing pen according to claim 1, characterized in that: When the sealing component is flipped over to close the opening, the tip of the pen core is located inside the opening, and the tip of the pen core is located inside the sleeve.

4. The push-pull writing pen according to claim 1, characterized in that: The sealing member comprises a first connecting member, a second connecting member and a flexible connecting member, wherein the sealing member is arranged between the first connecting member and the second connecting member through the flexible connecting member, and the sealing member can be turned over relative to the first connecting member and the second connecting member; The sleeve is provided with a pulling portion, and the pulling portion is configured to pull the first connecting component to slide together when the sleeve slides toward the pen head away from the pen core, so that the sealing component is exposed from the opening and flipped to open the opening.

5. The push-pull writing pen according to claim 4, characterized in that: The inner wall of the sleeve is provided with a pushing portion, and the pulling portion is located between the pushing portion and the opening; the pushing portion is configured to push the first connecting component to slide together when the sleeve slides toward the pen tip close to the pen core so that the sealing component flips over and retracts into the opening to close the opening.

6. The push-pull writing pen according to claim 5, characterized in that: The sleeve comprises a first cylinder and a second cylinder, wherein the first cylinder and the second cylinder are detachably connected together; The opening is formed at the end of the first cylinder, the pulling portion is provided on the inner wall of the first cylinder, and the pushing portion is provided on the inner wall of the second cylinder.

7. The push-pull writing pen according to claim 6, characterized in that: A sealing ring is also arranged in the sleeve, and the sealing ring is sleeved on the outside of the pen shaft and is located between the pushing part and the sealing member.

8. The push-pull writing pen according to any one of claims 1 to 7, characterized in that: The utility model further comprises a spring, wherein the spring is arranged between the sleeve and the pen body, and the spring is configured to apply a spring force to the sleeve in the direction of the pen tip of the pen core.

9. The push-pull writing pen according to any one of claims 1 to 7, characterized in that: The pen holder comprises a first rod body and a second rod body, and the first rod body and the second rod body are detachably connected together; The pen core is inserted into the first rod body, the pen tip of the pen core extends out of the first rod body, and the second rod body is sleeved on the outside of the pen core.

10. The push-pull writing pen according to any one of claims 1 to 7, characterized in that: The end of the pen shaft away from the pen tip of the pen core is provided with an inserting portion; The plug-in portion is configured so that the pen barrels of the two push-pull type writing pens are plugged into each other from the side through the plug-in portion so that the two push-pull type writing pens are connected together.

Images