Pressing type pen with pen point capable of being closed

Abstract

The invention discloses a press-type pen with a closeable pen point, which relates to the field of stationery, and adopts the technical scheme that the press-type pen comprises a pen holder with two open ends and a hollow interior, a refill arranged at the front end in the pen holder and provided with a pen point, a press linkage mechanism comprising a press linkage assembly and a press piece extending to the outside of the rear end of the pen holder, and a pen point closing mechanism arranged at the front end of the pen holder. The sealing mechanism comprises a sealing shell connected with the front end of the pen holder and provided with a pen point hole and a sealing piece arranged in the sealing shell, rotationally connected with the sealing shell and linked with the pressing piece, and the pressing piece can drive the sealing piece to seal or open the pen point hole. Through linkage of the sealing piece and the pressing piece, the sealing piece is opened synchronously when the pen point stretches out and closed immediately when the pen point retracts, the hidden danger of ink drying when the ink pen is applied to a pressing type structure is avoided, residual ink on the pen point is effectively prevented from leaking, ink volatilization is reduced, and smooth and stable writing is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of stationery, in particular to a push-type pen with a closable nib. Background Art

[0002] In the field of writing instruments, push-button pens have become a mainstream design for common writing instruments such as ballpoint pens and gel pens due to their ease of operation and the elimination of the need for screwing or uncapping caps. Existing push-button pens typically utilize an internal spring and a guide mechanism to eject and retract the pen tip. When the pen tip is pressed, one of two cooperating claws in the guide mechanism rotates a certain angle, pushing the refill forward and exposing the tip for writing. When pressed again, one of the claws rotates a certain angle again, causing the spring to return the refill back into the pen barrel.

[0003] However, the current push-type pens on the market are almost all designed for ballpoint pens, gel pens, etc. that use ink or gel ink. For this type of pen, since the ink itself has a certain viscosity and is not easy to evaporate, even if the pen tip is exposed for a long time or is simply retracted into the pen barrel (still connected to the air), it is not easy to leak or dry up the ink. Therefore, the pen tips of existing push-type pens are all open structures, and there is no need to consider the sealing problem of the pen tip.

[0004] However, this structure presents significant applicability barriers for fountain pens (i.e., fountain pens) that use liquid ink as their writing medium. The ink in a fountain pen is highly fluid and volatile, and if the ink storage structure of the nib (such as the nib gap and ink supply channel) is exposed to air for a long time, the ink can easily evaporate and dry up, causing the nib to clog and writing to become difficult. Furthermore, when the fountain pen is not writing, if the nib is not effectively sealed, the ink remaining in the nib can easily leak into or out of the pen barrel due to external forces such as shaking or tilting during carrying, contaminating clothing, documents, etc., seriously affecting the user experience.

[0005] Although traditional fountain pens often use screw-on or pull-off caps to close the nib, the operation is relatively cumbersome and the cap is easily lost. Therefore, how to combine the convenience of a push-on cap with the required nib closure function of a fountain pen has become a technical problem that needs to be solved. Summary of the Invention

[0006] In view of one of the deficiencies of the prior art, the present invention provides a push-type pen with a closable nib, which solves the problem that the push-type pen structure cannot be adapted to an ink pen.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: with the writing end of a press-type pen as the front end, comprising:

[0008] The pen holder is a hollow cylinder with open ends.

[0009] The pen core is arranged inside the pen barrel, and the front end of the pen core is provided with a pen tip;

[0010] The pressing linkage mechanism includes a pressing linkage assembly arranged inside the pen barrel and a pressing piece extending to the outside of the rear end of the pen barrel. The pressing piece can drive the pen core to slide inside the pen barrel through the pressing linkage assembly.

[0011] The pen tip sealing mechanism is arranged at the front end of the pen holder, and the pen tip sealing mechanism includes:

[0012] The closure shell is connected to the front end of the pen holder, and the closure shell is provided with a nib hole for the pen tip to pass through;

[0013] The closing member is arranged inside the closing shell, is rotatably connected to the closing shell, and is linked to the pressing member. The pressing member can drive the closing member to close or open the pen tip hole.

[0014] Preferably, the pen holder comprises:

[0015] The first half is the front half of the pen holder, the nib sealing mechanism is arranged at the front end of the first half, and the rear end of the first half is provided with an internal thread;

[0016] The second half is the rear half of the pen holder and is connected to the rear end of the first half. The second half includes:

[0017] The front end of the pen barrel inner shell is provided with an external thread corresponding to the first half; the outer wall of the pen barrel inner shell is provided with a protruding pen barrel positioning block;

[0018] The pen housing is sleeved on the outside of the pen inner housing, and a through groove is provided on the wall of the pen housing corresponding to the pen positioning block of the pen inner housing;

[0019] The pen also includes:

[0020] A pen clip assembly is disposed at the rear of the second half, and the pen clip assembly includes:

[0021] The inner pen clip is a long strip-shaped structure, and the rear end of the inner pen clip is integrally connected to the inner shell of the pen holder through a connecting block;

[0022] The outer pen clamp has a long through slot corresponding to the inner pen clamp. The outer pen clamp is sleeved on the outer side of the inner pen clamp, and the rear end of the outer pen clamp is integrally connected to the pen holder shell through two connecting plates.

[0023] Preferably, the pen core further comprises:

[0024] A refill housing is slidably connected to the pen holder, and a pen tip is arranged at the front end of the refill housing;

[0025] The inner component of the pen core is arranged inside the pen core shell, including a regulator and a water guide core;

[0026] The ink sac plug-in structure is arranged at the rear end of the pen core housing;

[0027] The ink sac is plugged into the ink sac plugging structure.

[0028] Preferably, the pressing linkage component includes:

[0029] A fixed linkage member is connected to the pressing member; the front end of the fixed linkage member can abut against the rear end of the ink bag;

[0030] A movable linkage member, rotatably connected to the fixed linkage member;

[0031] The slide bar is a long strip-shaped structure provided on the outer wall of the movable linkage member. The extension direction of the slide bar is parallel to the axial direction of the pen holder. The rear end of the slide bar is an inclined surface.

[0032] The claw is arranged at the rear end of the movable linkage member; the front end of the claw is an inclined surface;

[0033] The pen holder also includes:

[0034] A pressing guide assembly is provided on the inner wall of the pen barrel, the pressing guide assembly comprising a plurality of guide blocks evenly distributed in a circumferential array, with a gap between two adjacent guide blocks to form a slideway, and a notch is provided on the guide block toward the rear end of the pen barrel;

[0035] The slide bar can slide in the slideway between the guide blocks, and the clamping claw can be inserted into the notch of the guide block.

[0036] Preferably, the closed shell comprises:

[0037] The main housing is made of a hard material and is connected to the front end of the pen holder; a mounting hole is provided at the front end of the main housing;

[0038] The end component is arranged at the mounting hole at the front end of the main shell; the pen tip hole is opened on the end component, and the end component is made of elastic material.

[0039] Preferably, a sealing ring is provided on the side of the end member facing the pen barrel; the closing member is an arc-shaped plate, and when the pen core is retracted, the front side of the closing member is in contact with the sealing ring.

[0040] Preferably, both ends of the sealing member are rotatably connected to the inner wall of the sealing shell via a rotatable connection structure;

[0041] The nib closure mechanism also includes:

[0042] The closing linkage part is arranged between the pen core and the closing part. When the pressing part is pressed, the pen core is linked with the closing part through the closing linkage part.

[0043] Preferably, a driven linkage structure is provided on the side of the closure member facing the inside of the pen barrel; and an active linkage structure is provided on the front of the closure linkage member;

[0044] The active linkage structure and the driven linkage structure are both hook-shaped, and the active linkage structure and the driven linkage structure are hooked.

[0045] Preferably, the closed linkage member is sleeved on the outside of the pen core and is slidably connected to the pen core; the closed linkage member and the pen core are linked via a follower structure; the follower structure includes:

[0046] The follower block is a block fixed on the outer wall of the pen core, and the follower block can drive the closed linkage part to move.

[0047] Preferably, the follower block is an elongated block; the follower structure further comprises:

[0048] The follower groove is a long groove provided on the closed linkage member, and the follower block can be inserted into the follower groove.

[0049] Preferably, the front end of the follower block is provided with a tip of an isosceles triangle, and the tail end of the tip structure is provided with a stepped structure;

[0050] The follower structure further includes:

[0051] A clamping block is provided on each of the two parallel inner walls of the follower groove; the rear end face of the clamping block is a plane, and the front end face is an inclined surface; the tip of the follower block can be inserted between the two clamping blocks.

[0052] Preferably, a limit assembly is provided between the closed linkage member and the refill, and the limit assembly comprises:

[0053] The refill stopper is an annular boss provided on the outer side of the front portion of the refill;

[0054] The linkage limiting member is an annular boss arranged on the inner side of the rear portion of the closed linkage member; when the linkage limiting member and the refill are connected, the linkage limiting member is located on the rear side of the refill limiting member.

[0055] Preferably, the pressing linkage component further includes:

[0056] The pressing and resetting member is an elastic member provided between the pen core and the pen barrel, which can reset the pen core;

[0057] The refill also includes:

[0058] The core seal is annular and is sleeved on the outside of the core. The outer side of the core seal is in contact with the inner wall of the pen barrel. The core seal is located on the front side of the ink bag plug-in structure and on the rear side of the press-reset component.

[0059] Compared with the existing technology, it has the following beneficial effects:

[0060] (1) Effectively solves the problem of protecting the nib of an ink pen. By providing a nib sealing mechanism consisting of a sealing shell and a sealing member, the sealing member can tightly seal the nib hole on the sealing shell when not writing, completely isolating the nib from the external environment and enhancing the protection of the nib.

[0061] (2) It solves the hidden danger of ink drying in fountain pens with a press-type structure. Since the closure member is linked to the press member, when the pen tip is extended to write, the closure member simultaneously opens the pen tip hole; and when the pen tip is retracted by pressing the reset button, the closure member immediately closes the pen tip hole, so that the pen tip and the ink storage structure are always in a relatively closed space. This design specifically solves the two major pain points of fountain pens caused by the high fluidity and volatility of ink: on the one hand, it effectively prevents the residual ink in the pen tip from leaking due to shaking and tilting during carrying, avoiding contamination of clothes and documents; on the other hand, it greatly reduces the contact between ink and air, significantly reducing the problem of pen tip blockage and poor writing caused by ink evaporation and drying, and ensuring the smoothness and stability of writing. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a schematic diagram of the retracted pen tip of the push-type pen according to an embodiment of the present application;

[0063] Figure 2 This is a schematic diagram of the tip of the push-type pen in the extended state according to an embodiment of the present application;

[0064] Figure 3 A cross-sectional view of a press-type pen according to an embodiment of the present application;

[0065] Figure 4 for Figure 3 A partial enlarged view of;

[0066] Figure 5 A top view of the second half of the embodiment of the present application;

[0067] Figure 6 for Figure 5 AA cross-section of

[0068] Figure 7 This is a schematic diagram of the structure of the press linkage assembly according to an embodiment of the present application;

[0069] Figure 8 This is a schematic diagram of the internal component structure of the pen holder according to an embodiment of the present application;

[0070] Figure 9 This is an exploded view of the internal components of the pen barrel according to an embodiment of the present application;

[0071] Figure 10 for Figure 9 A partial enlarged view of;

[0072] Figure 11 This is a schematic diagram of the closed linkage structure of an embodiment of the present application;

[0073] Figure 12 This is a schematic diagram of the structure of the pen tip sealing mechanism according to an embodiment of the present application;

[0074] Figure 13 This is a cross-sectional view of the pen tip sealing mechanism according to an embodiment of the present application;

[0075] Figure 14 This is an exploded view of the pen tip sealing mechanism according to an embodiment of the present application;

[0076] Figure 15 This is an exploded view of the closed shell of an embodiment of the present application.

[0077] In the picture:

[0078] 1. Penholder; 11. First half; 12. Second half; 121. Penholder inner shell; 122. Penholder outer shell; 13. Clip assembly; 131. Inner clip; 132. Outer clip; 14. Press guide assembly;

[0079] 2. Pen refill; 21. Pen tip; 22. Pen refill housing; 221. Follower block; 23. Pen refill internal components; 24. Ink sac plug-in structure; 25. Ink sac; 26. Pen refill seal;

[0080] 3. Press linkage mechanism; 31. Press linkage assembly; 32. Press member; 33. Press reset member;

[0081] 4. Pen tip closing mechanism; 41. Closing shell; 411. Pen tip hole; 412. Main shell; 413. End component; 42. Closing member; 421. Driven linkage structure; 43. Closing linkage member; 431. Active linkage structure; 432. Follow-up groove; 433. Block. DETAILED DESCRIPTION

[0082] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0083] See also Figures 1-15 , this application provides the following technical solutions:

[0084] A push-type pen with a closable nib. For ease of explanation, the writing end of the push-type pen is taken as the front end, and the "front" direction in the subsequent content refers to the direction toward the writing end of the push-type pen. The push-type pen of this solution includes a pen barrel 1 which is an overall hollow cylinder with both ends open. A refill 2 is provided inside the pen barrel 1, and a pen tip 21 is provided at the front end of the refill 2, which serves as a writing piece. A press-link mechanism 3 is provided in linkage with the refill 2, and the refill 2 is controlled to extend or retract by the press-link mechanism 3. The press-link mechanism 3 includes a press-link assembly 31 provided inside the pen barrel 1 and a press member 32 extending to the outside of the rear end of the pen barrel 1. During operation, the press member 32 is pressed, and then the refill 2 is driven to slide inside the pen barrel 1 by the press-link assembly 31. As the main innovation of this solution, a nib closing mechanism 4 is provided at the front end of the pen barrel 1, and the nib closing mechanism 4 is used to achieve the closure of the nib. See Figures 12 to 14 The pen tip sealing mechanism 4 includes a sealing shell 41 and a sealing member 42. The front part of the sealing shell 41 is a shell that is approximately hemispherical, and the rear part is a cylindrical body. An internal thread is provided at the rear end of the sealing shell 41, and an external thread is correspondingly provided at the front of the pen body 1. Through this structure, the sealing shell 41 and the pen body 1 are threadedly connected. A pen tip hole 411 is provided at the front end of the sealing shell 41 for the pen tip 21 to pass through. A sealing member 42 is provided inside the sealing shell 41. The sealing member 42 is rotatably connected to the sealing shell 41, and the sealing member 42 is linked to the pressing member 32. The pressing member 32 can drive the sealing member 42 to close or open the pen tip hole 411.

[0085] Through the structure of this solution, the pen tip hole 411 is opened or closed by the rotation of the closure member 42. The driving force of the closure member 42 is directly driven by the pressing force during the operation of the push-type pen. Through internal linkage, when the pressing member 32 is pressed to extend the pen core 2, the closure member 42 rotates accordingly to open the pen tip hole 411. Conversely, when the pressing member 32 is pressed to retract the pen core 2, the closure member 42 rotates in the opposite direction to close the pen tip hole 411. When the pen tip hole 411 is sealed, pens that conventionally require a cap structure, including fountain pens and markers, can achieve a push-type structural improvement with the structure of this solution.

[0086] The following is a further detailed description of each part of this plan.

[0087] Based on the above implementation plan, see Figures 1 to 6 The penholder 1 of this embodiment comprises a first half 11 and a second half 12. The first half 11 is the front half of the penholder 1, with the nib closure mechanism 4 disposed at the front end of the first half 11. The rear end of the first half 11 is provided with an internal thread. The second half 12 is the rear half of the penholder 1 and is connected to the rear end of the first half 11. A grip structure is provided on the outside of the first half 11 to facilitate writing. This type of grip structure is known in the art and can be provided in a variety of different forms, which will not be described in detail here.

[0088] The second half 12 comprises an inner barrel shell 121 and an outer barrel shell 122. The front end of the inner barrel shell 121 is provided with external threads corresponding to the first half 11; the outer wall of the inner barrel shell 121 is provided with a protruding barrel positioning block. The outer barrel shell 122 fits over the outer barrel shell 121, and a through-slot is defined in the wall of the outer barrel shell 122 corresponding to the positioning block in the inner barrel shell 121. When the outer barrel shell 122 and the inner barrel shell 121 are joined, the positioning block snaps into the through-slot of the outer barrel shell 122.

[0089] A pen clip assembly 13 is also provided on the outer rear side of the second half 12. The pen clip assembly 13 serves a conventional purpose, facilitating the hanging or clipping of a pen between a pocket, a piece of paper, or the like. This solution improves the structure of the pen clip assembly 13. The pen clip assembly 13 includes an inner pen clip 131 and an outer pen clip 132. The inner pen clip 131 is an elongated structure, with the rear end of the inner pen clip 131 integrally connected to the pen barrel inner shell 121 via a connecting block. An elongated through slot corresponding to the inner pen clip 131 is provided within the outer pen clip 132. The outer pen clip 132 is sleeved onto the outer side of the inner pen clip 131, and the rear end of the outer pen clip 132 is integrally connected to the pen barrel outer shell 122 via two connecting plates. When the inner barrel shell 121 and outer barrel shell 122 are connected, the inner clip 131 snaps into the slot of the outer clip 132, with the connecting plates located on either side of the two connecting blocks. This structure not only enhances the integrity of the second half 12, but also increases the toughness of the clip assembly 13, reducing the risk of fracture under stress.

[0090] Based on the above implementation plan, see Figure 3 and Figure 4 The refill 2 also includes a refill housing 22 and an internal assembly 23. While conventional components are sufficient, this solution primarily improves the exterior of the refill housing 22, which will be described later. Taking a refillable ink pen as an example, this solution incorporates a refill housing 22 and penholder 1 in a sliding connection, with the nib 21 positioned at the front end of the refill housing 22. The internal assembly 23, including a regulator and a water guide core, is located within the housing 22. An ink sac insertion structure 24 is provided at the rear end of the refill housing 22, into which an ink sac 25 is inserted.

[0091] This solution is implemented in a refillable ink pen, and other types of refills, including marker pens, ballpoint pens, gel pens, etc., can also use this solution to seal the pen tip.

[0092] Based on the above implementation plan, see Figures 6 to 9The pressing linkage assembly 31 includes a fixed linkage member 311 and a movable linkage member 312. The fixed linkage member 311 and the pressing member 32 are connected; the fixed linkage member 311 includes a connecting post, and a push plate is provided at the front end of the connecting post. The push plate can abut against the rear end of the ink sac 25; the movable linkage member 312 is sleeved on the outside of the connecting post of the fixed linkage member 311 and is rotatably connected. The front end of the movable linkage member 312 is located behind the push plate, and the push plate provides a position limit function for the movable linkage member 312.

[0093] Two slides 313 and two claws 314 are provided on the outer wall of the movable linkage 312. The slides 313 are elongated structures provided on the outer wall of the movable linkage 312, extending parallel to the axis of the pen barrel 1. The rear end of the slides 313 is an inclined surface. The claws 314 are provided at the rear end of the movable linkage 312, and the front ends of the claws 314 are inclined surfaces.

[0094] A pressing guide assembly 14 is provided on the inner wall of the pen shaft 1. The pressing guide assembly 14 includes a plurality of guide blocks evenly distributed in a circular array. There is a gap between two adjacent guide blocks to form a slideway. The guide blocks are provided with a slot toward the rear end of the pen shaft 1. The slide bar 313 can slide in the slideway between the guide blocks, and the claw 314 can be inserted into the slot of the guide block.

[0095] The coordination between the push guide assembly 14 and the movable linkage 312 can be referenced from existing push-type pens, and the principles are similar. However, unlike existing push-type pens, as in the aforementioned solution, if the nib of a fountain pen is to be extended and retracted, the present solution requires a longer stroke. Therefore, the present solution adopts a structural form in which the aforementioned push guide assembly 14 is disposed on the inner wall of the pen barrel 1. At the same time, the conventional linkage arrangement of the push-type pen is changed to adopt a movable linkage 312 structure to achieve a longer extension and retraction distance of the nib.

[0096] On the basis of the above implementation plan, Figures 12 to 15The closed shell 41 includes a main shell 412 and an end component 413. The main shell 412 is made of a hard material, such as hard rubber, and is connected to the front end of the pen body 1; a mounting hole is provided at the front end of the main shell 412; the end component 413 is arranged at the mounting hole at the front end of the main shell 412; the pen tip hole 411 is provided on the end component 413, and the end component 413 is made of an elastic material, such as soft rubber. The pen tip hole 411 adopts a non-circular special-shaped hole. The hole wall of the pen tip hole 411 includes a first arc surface and a second arc surface, and the two ends of the first arc surface and the second arc surface are connected to each other. The shape of the pen tip hole 411 of this solution is approximately a semicircular hole, but unlike the semicircular hole, the first arc surface of the pen tip hole 411 of this solution is a larger arc than the semicircle, and the second arc surface is not a straight surface, but an arc structure that is relatively close to a plane as a whole. This structure is primarily due to the unique structural characteristics of ink pens, particularly fountain pen nibs. This shape of nib hole 411 allows for a better fit with the pen nib. This structure provides a certain degree of shielding for the rear portion of the pen nib when the pen nib enters and exits the nib hole 411 and reaches its forward position. Of course, the nib hole 411 of this embodiment can also be a conventional round hole. This structure effectively protects the pen nib.

[0097] Based on the above embodiment, a sealing ring is provided on the side of the end member 413 facing the pen body 1; the closing member 42 is an arc-shaped plate, and the front side of the closing member 42 is an arc surface. When the pen core 2 is retracted, the front side of the closing member 42 and the sealing ring are in contact.

[0098] The sealing ring is made of the same material as the end member 413 . With this structure, the sealing effect of the pen tip after the pen core 2 is retracted can be enhanced.

[0099] On the basis of the above embodiment, both ends of the closure member 42 are rotatably connected to the inner wall of the closure shell 41 through a rotatable connection structure; Figure 14 As shown, the rotary connection structure of this solution is a cylindrical rotating shaft, and a corresponding "U"-shaped groove is provided inside the closed shell 41. A boss is provided on one side of the open end of the groove, and the side of the boss away from the recess is an inclined surface.

[0100] This solution realizes the rotational connection between the sealing member 42 and the interior of the sealing shell 41 through this structure, and the boss outside the groove is provided to facilitate positioning during assembly.

[0101] Based on the above implementation plan, see Figure 11 、 Figure 13 and Figure 14The pen tip closing mechanism 4 further includes a closing linkage 43, which is a cylindrical body. The closing linkage 43 is sleeved on the outside of the pen core 2 and is slidably connected to the pen core 2. When the pressing member 32 is pressed, the pen core 2 is linked to the closing member 42 through the closing linkage 43.

[0102] A driven linkage structure 421 is provided on the side of the closing member 42 facing the inside of the pen body 1; an active linkage structure 431 is provided on the front of the closing linkage member 43; the active linkage structure 431 and the driven linkage structure 421 are both hook-shaped, and the active linkage structure 431 and the driven linkage structure 421 are hung.

[0103] The hook structures of the active linkage structure 431 and the driven linkage structure 421 are opposite, that is, the openings of the hook structures of the two are arranged opposite to each other. Through the connection of the two hook structures, when the closing linkage part 43 moves with the pen core 2, the closing part 42 is pulled or pushed to rotate, thereby realizing the opening and closing of the pen tip hole 11.

[0104] Based on the above implementation plan, see Figure 10 and Figure 11 The closure linkage 43 and the refill 2 are linked by a follower structure; the follower structure includes a follower block 221 and a follower slot 432. The follower block 221 is a block fixed to the outer wall of the refill 2, which drives the closure linkage 43. The follower block 221 is an elongated block with an isosceles triangle tip at its front end, and a stepped structure at the rear end of the tip structure.

[0105] The follower groove 432 is a long groove formed on the closed linkage member 43, into which the follower block 221 can be inserted. A clamping block 433 is provided on each of the two parallel inner walls of the follower groove 432. The rear end of the clamping block 433 is flat, and the front end is inclined. The tip of the follower block 221 can be inserted between the two clamping blocks 433.

[0106] In addition, a limit assembly is provided between the closed linkage member 43 and the refill 2. The limit assembly includes a refill limiter 222 and a linkage limiter 434. The refill limiter 222 is provided as an annular boss on the front, outer side of the refill 2; the linkage limiter 434 is provided as an annular boss on the rear, inner side of the closed linkage member 43. When the linkage limiter 434 is connected to the refill 2, it is located behind the refill limiter 222.

[0107] For the sake of convenience, the extended state of the refill 2 of the push-type pen is referred to as state 1, and the retracted state of the refill is referred to as state 2. Figure 8The diagram shows state 1, where the tip of the isosceles triangle at the front end of the follower block 221 extends between the two clamping blocks 433. The stepped structure at the rear of the triangle abuts the flat side of the rear end of the clamping block 433. As pressure is applied, the refill 2 is propelled forward, and the follower block 221 pushes the closure linkage 43 forward synchronously. As previously mentioned, the refill's travel distance in this embodiment is longer than that of a conventional ballpoint pen, while the corresponding linkage travel distance of the closure member 42 is shorter. Thanks to the follower structure, when the closure linkage 43 reaches its corresponding travel position, that is, when the closure member 42 opens, it cannot move further. At this point, the follower block 221 continues forward, slightly squeezing the walls of the follower slot 432 on both sides, causing them to deform and open, allowing the follower block 221 to enter the follower slot 432. Therefore, the difference between the travel distance of the refill 2 and the movement of the closure linkage 43 does not cause structural interference.

[0108] In the second rotation state, the follower block 221 moves rearward. Because the clamping blocks 433 clamp on both sides of the follower block 221, the follower block 221 drives the closing linkage 43 to move backward synchronously. After the closing member 42 rotates to the closed position of the pen tip hole 411, the closing linkage 43 stops moving. The follower block 221 continues to move backward, away from the clamping position of the clamping blocks 433, and can return to the original position. The limiting action of the refill stopper 222 and the linkage stopper 434 ensures that the closing linkage 43 and the refill 2 do not separate.

[0109] On the basis of the above implementation scheme, the pressing linkage assembly 31 further includes a pressing reset member 33 . The pressing reset member 33 is a spring arranged between the pen core 2 and the pen body 1 , which can reset the pen core 2 .

[0110] In addition to the above embodiment, the refill 2 further includes a refill seal 26, which is an annular rubber ring. The refill seal 26 is sleeved onto the outside of the refill 2, with the outer surface of the refill seal 26 contacting the inner wall of the pen barrel 1. The refill seal 26 is located in front of the ink sac insertion structure 24 and behind the press-reset member 33. The provision of the refill seal 26 provides a certain degree of isolation from the location of the ink sac 25, thereby improving the sealing of the ink sac chamber.

[0111] Based on the above implementation plan, see Figure 14 An inclined guide block is located in the middle of the inner side of the closure member 42. The guide block is thicker toward the center of the closure member 42 and thinner toward the edge of the closure member 42. The thinner portion of the guide block is located at the edge where the closure member 42 rotates to close the nib hole 411. This structure ensures that even if there is a problem with the internal closure linkage 43, when the refill 2 is extended, the nib 21 will push the guide block, causing the closure member 42 to open, allowing writing.

[0112] In the description of the present application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0113] In this application and its embodiments, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0114] In the present application and its embodiments, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0115] The disclosure above provides many different embodiments or examples for realizing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0116] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0117] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A push-type pen with a closable nib, with the writing end of the push-type pen as the front end, characterized in that: include: The pen holder is a hollow cylinder with open ends. The pen core is arranged inside the pen barrel, and the front end of the pen core is provided with a pen tip; The pressing linkage mechanism includes a pressing linkage assembly arranged inside the pen barrel and a pressing piece extending to the outside of the rear end of the pen barrel. The pressing piece can drive the pen core to slide inside the pen barrel through the pressing linkage assembly. The pen tip sealing mechanism is arranged at the front end of the pen holder, and the pen tip sealing mechanism includes: The closure shell is connected to the front end of the pen holder, and the closure shell is provided with a nib hole for the pen tip to pass through; The closing member is arranged inside the closing shell, is rotatably connected to the closing shell, and is linked to the pressing member. The pressing member can drive the closing member to close or open the pen tip hole.

2. The push-type pen with a closable nib as claimed in claim 1, characterized in that: The pen holder comprises: The first half is the front half of the pen holder, the nib sealing mechanism is arranged at the front end of the first half, and the rear end of the first half is provided with an internal thread; The second half is the rear half of the pen holder and is connected to the rear end of the first half. The second half includes: The front end of the pen barrel inner shell is provided with an external thread corresponding to the first half; the outer wall of the pen barrel inner shell is provided with a protruding pen barrel positioning block; The pen housing is sleeved on the outside of the pen inner housing, and a through groove is provided on the wall of the pen housing corresponding to the pen positioning block of the pen inner housing; The pen also includes: A pen clip assembly is disposed at the rear of the second half, and the pen clip assembly includes: The inner pen clip is a long strip-shaped structure, and the rear end of the inner pen clip is integrally connected to the inner shell of the pen holder through a connecting block; The outer pen clamp has a long through slot corresponding to the inner pen clamp. The outer pen clamp is sleeved on the outer side of the inner pen clamp, and the rear end of the outer pen clamp is integrally connected to the pen holder shell through two connecting plates.

3. The push-type pen with a closable nib as claimed in claim 1, characterized in that: The refill also includes: A refill housing is slidably connected to the pen holder, and a pen tip is arranged at the front end of the refill housing; The inner component of the pen core is arranged inside the pen core shell, including a regulator and a water guide core; The ink sac plug-in structure is arranged at the rear end of the pen core housing; The ink sac is plugged into the ink sac plugging structure.

4. The push-type pen with a closable nib as claimed in claim 1, wherein: The pressing linkage component includes: A fixed linkage member is connected to the pressing member; the front end of the fixed linkage member can abut against the rear end of the ink bag; A movable linkage member, rotatably connected to the fixed linkage member; The slide bar is a long strip-shaped structure provided on the outer wall of the movable linkage member. The extension direction of the slide bar is parallel to the axial direction of the pen holder. The rear end of the slide bar is an inclined surface. The claw is arranged at the rear end of the movable linkage member; the front end of the claw is an inclined surface; The pen holder also includes: A pressing guide assembly is provided on the inner wall of the pen barrel, the pressing guide assembly comprising a plurality of guide blocks evenly distributed in a circumferential array, with a gap between two adjacent guide blocks to form a slideway, and a notch is provided on the guide block toward the rear end of the pen barrel; The slide bar can slide in the slideway between the guide blocks, and the clamping claw can be inserted into the notch of the guide block.

5. The push-type pen with a closable nib as claimed in claim 1, characterized in that: The closed shell comprises: The main housing is made of a hard material and is connected to the front end of the pen holder; a mounting hole is provided at the front end of the main housing; The end component is arranged at the mounting hole at the front end of the main shell; the pen tip hole is opened on the end component, and the end component is made of elastic material.

6. The push-type pen with a closable nib as claimed in claim 5, characterized in that: A sealing ring is provided on the side of the end component facing the pen holder; the closing component is an arc-shaped plate, and when the pen core is retracted, the front side surface of the closing component is in contact with the sealing ring.

7. The push-type pen with a closable nib as claimed in claim 1, wherein: The two ends of the sealing member are rotatably connected to the inner wall of the sealing shell via a rotating connection structure; The nib closing mechanism also includes: The closing linkage part is arranged between the pen core and the closing part. When the pressing part is pressed, the pen core is linked with the closing part through the closing linkage part.

8. The push-type pen with a closable nib as claimed in claim 7, wherein: The side of the closure member facing the inside of the pen barrel is provided with a driven linkage structure; the front part of the closure linkage member is provided with an active linkage structure; The active linkage structure and the driven linkage structure are both hook-shaped, and the active linkage structure and the driven linkage structure are hooked.

9. The push-type pen with a closable nib as claimed in claim 7, wherein: The closed linkage member is sleeved on the outside of the pen core and is slidably connected to the pen core; the closed linkage member and the pen core are linked by a follower structure; the follower structure includes: The follower block is a block fixed on the outer wall of the pen core, and the follower block can drive the closed linkage part to move.

10. The push-type pen with a closable nib as claimed in claim 9, characterized in that: The following block is a long strip-shaped block; the following structure also includes: The follower groove is a long groove provided on the closed linkage member, and the follower block can be inserted into the follower groove.

11. The push-type pen with a closable nib as claimed in claim 10, wherein: The front end of the follower block is provided with a tip of an isosceles triangle, and the tail end of the tip structure is provided with a stepped structure; The follower structure further includes: A clamping block is provided on each of the two parallel inner walls of the follower groove; the rear end face of the clamping block is a plane, and the front end face is an inclined surface; the tip of the follower block can be inserted between the two clamping blocks.

12. The push-type pen with a closable nib as claimed in claim 11, wherein: A limit assembly is provided between the closed linkage member and the refill, and the limit assembly includes: The refill stopper is an annular boss provided on the outer side of the front portion of the refill; The linkage limiting member is an annular boss arranged on the inner side of the rear portion of the closed linkage member; when the linkage limiting member and the refill are connected, the linkage limiting member is located on the rear side of the refill limiting member.

13. The push-type pen with a closable nib as claimed in claim 4, characterized in that: The pressing linkage component also includes: The pressing and resetting member is an elastic member provided between the pen core and the pen barrel, which can reset the pen core; The refill also includes: The core seal is annular and is sleeved on the outside of the core. The outer side of the core seal is in contact with the inner wall of the pen barrel. The core seal is located on the front side of the ink bag plug-in structure and on the rear side of the press-reset component.

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