Pen structure for controlling extension and retraction of refill based on lateral control force and refill extension and retraction driving structure

Abstract

The utility model provides a pen structure for controlling stretching and retracting of a refill based on lateral control force, a refill stretching and retracting driving structure and a pen structure for controlling stretching and retracting of the refill based on the lateral control force. The pen structure comprises a pen holder, the refill, a refill pushing piece and a lateral control force driving piece. Wherein the pen holder is provided with an inner cavity, a pen point opening and a pen tail; the refill is contained in the inner cavity in a clearance mode and located between the pen point opening and the pen tail. The refill pushing piece is located between the refill and the side control force driving piece, one end of the refill pushing piece abuts against the refill, and the other end of the refill pushing piece abuts against the side control force driving piece so that the abutting state between the side control force conduction part and the refill pushing piece can be adjusted when the side control force driving piece receives applied side control force. Therefore, the pen core can be stretched out and drawn back.

Description

Technical Field

[0001] This application relates to the field of teaching aids technology, and in particular to a pen structure and a pen retraction drive structure based on lateral force for pen retraction control. Background Technology

[0002] In the development of writing and drawing tools, the traditional pen lead control method has gradually revealed its limitations, making it difficult to meet the diverse and personalized needs of modern users.

[0003] Traditional pen refill control mechanisms primarily focus on the design at the top or bottom of the pen barrel. For example, many push-button pens use a button at the top of the barrel, employing an internal spring and mechanical linkage to eject and retract the refill. While this method achieves basic refill control to some extent, it has several drawbacks. The refill extension length is relatively fixed, unable to be flexibly adjusted according to the user's specific needs during writing or drawing. When writing fine text or drawing delicate patterns, a shorter refill extension may be needed to ensure accuracy; while when drawing thick lines, filling large areas, or expressing specific brushstrokes in calligraphy, a longer refill extension is required. Traditional push-button pens struggle to meet the need for rapid switching between different refill extension lengths on the same pen.

[0004] Furthermore, the rotary pen refill control mechanism also has its shortcomings. It controls the refill's extension and retraction by rotating the end of the pen barrel, a relatively cumbersome process. Moreover, after frequent use, wear on the threads can easily lead to unstable refill control, affecting the pen's lifespan and user experience.

[0005] From an operational convenience perspective, traditional pen controls located at the top or bottom of the pen barrel present significant inconvenience for certain usage scenarios and user groups. For example, in situations requiring high single-handed operation, such as field recording or writing while holding a tool, the hand needs to be moved to the top or bottom of the pen barrel for operation. This increases the complexity and difficulty of operation, easily distracting attention and even leading to errors. For people with limited hand dexterity or strength, such as the elderly, children, or those recovering from hand injuries, traditional pressing or rotating operations may require considerable force or precise movements, causing them difficulty in using the pen. Utility Model Content

[0006] The purpose of this application is to provide a pen structure and a pen retraction drive structure based on lateral force for pen retraction control, so as to overcome or alleviate the above-mentioned technical problems in the prior art.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A pen structure for controlling the extension and retraction of the pen tip based on lateral force includes: a pen barrel, a pen tip, a pen tip pusher, and a lateral force drive; wherein: the pen barrel has an inner cavity, a pen tip opening, and a pen tail; the pen tip is accommodated in the inner cavity with a gap and is located between the pen tip opening and the pen tail; the pen tip pusher is located between the pen tip and the lateral force drive, with one end abutting against the pen tip and the other end abutting against the lateral force drive, so that the abutting state between the lateral force transmission part and the pen tip pusher can be adjusted when the lateral force drive receives an applied lateral force, thereby causing the pen tip to extend and retract.

[0009] Optionally, the side control force driving component includes: a side control force receiving part and a side control force transmitting part. The side control force receiving part has a fixed end and a movable end. The side control force transmitting part has a first tiltable end and a second tiltable end. The side control force receiving part is fixed to the outer wall of the pen barrel through the fixed end. The side control force receiving part abuts against the first tiltable end through the movable end to receive the applied side control force. The side control force causes the side control force transmitting part to rotate and the contact state between it and the pen refill pusher is adjustable. The side control force transmitting part is fixed in the inner cavity through a rotating shaft, and the first tiltable end abuts against the movable end, and the second tiltable end abuts against the pen refill pusher to form the adjustable contact state, thereby allowing the pen refill to move toward the pen tip opening or away from the pen tip opening, thereby causing the pen refill to extend or retract.

[0010] Optionally, the end of the pen refill pusher facing the side control force transmission part has a structural end that can abut against the second tiltable end. The structure can form an adjustable top contact state so that the pen refill moves toward the pen tip opening or away from the pen tip opening.

[0011] Optionally, the end of the pen refill pusher facing the side control force transmission part is wedge-shaped, and the wedge-shaped end serves as the structural end to abut against the second tiltable end, so that the second tiltable end can slide along the wedge-shaped end and thereby form an adjustable contact state, thereby allowing the pen refill to move toward the pen tip opening, or away from the pen tip opening.

[0012] Optionally, the pen refill pusher is a columnar structure, and the end of the columnar structure facing the side control force transmission part has a protrusion, and the protrusion has the wedge shape.

[0013] Optionally, the movable end has a defined contour structure, which includes at least two action surfaces that can cause different displacement trends in the contacting component. When the first tiltable end abuts against the movable end and is subjected to lateral control force, the first tiltable end undergoes a displacement change based on the two action surfaces. The displacement change causes the second tiltable end to undergo a corresponding linkage displacement. The linkage displacement makes the contact state between the lateral control force transmission part and the pen refill pusher adjustable.

[0014] Optionally, the contour structure is hill-shaped, with two opposing slopes, which serve as two surfaces that can cause different displacement tendencies in the components they contact.

[0015] Optionally, the side force receiving part can be reused as a pen clip.

[0016] Optionally, the outer wall of the pen barrel is provided with a protective sleeve, which is close to the pen tip opening.

[0017] A pen retractable drive structure includes: a pen retractor pusher and a side control force driveer. The pen retractor pusher is located between the pen retractor and the side control force driveer, with one end abutting against the pen retractor and the other end abutting against the side control force driveer. This allows the abutting state between the side control force transmission part and the pen retractor pusher to be adjustable when the side control force driveer receives an applied side control force, thereby enabling the pen retractable.

[0018] The solution provided in this application has the following technical advantages:

[0019] First, this structure demonstrates a significant advantage in terms of the flexibility of refill extension control. Because the side-force drive can accept side-force and the contact state between the side-force transmission part and the refill pusher is adjustable, the refill extension is achieved.

[0020] Secondly, from the perspective of ease of use, the side-control design provides a better user experience for specific usage scenarios and users. In scenarios where single-handed operation is required, such as outdoor recording or writing while holding the tool, users do not need to change their pen-holding posture. They can easily control the extension and retraction of the pen tip by simply applying side-control force with their fingers on the side of the pen barrel. This avoids the complexity and distraction caused by the traditional method of moving the hand to the top or bottom, greatly improving operational efficiency and safety. For people with limited hand dexterity or strength, such as the elderly, children, or those recovering from hand injuries, side-control operation requires less force and is simpler and more direct than traditional pressing or rotating operations. Because the side-control force can be flexibly adjusted according to the user's actual ability, it does not require overcoming the large spring resistance of traditional pressing methods, nor does it require precise thread rotation like rotating methods. This lowers the barrier to entry, allowing these special groups to use writing and drawing tools comfortably and conveniently, improving their writing and drawing experience and independent creative ability.

[0021] Furthermore, by abandoning the threaded structure at the end of the traditional rotating pen barrel, the problem of unstable pen lead control caused by thread wear is avoided. At the same time, the top-connected structure design between the side control force drive and the pen lead pusher is relatively simple and durable, reducing the possibility of failure due to complex mechanical structures affecting the normal use of the pen. This effectively extends the pen's lifespan, reduces maintenance costs during use, and provides users with a more reliable and durable writing and drawing tool. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein:

[0023] Figure 1 This is a schematic diagram of the overall structure of a pen structure based on lateral force for pen retraction control, according to an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the internal structure of a pen structure with the shell removed, which controls the extension and retraction of the pen tip based on lateral force, according to an embodiment of this application. Detailed Implementation

[0025] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0026] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to a fixed connection or a link; they can refer to a direct connection or an indirect connection through intermediate components. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Figure 1 This is one of the schematic diagrams of a pen structure based on lateral force for pen retraction control according to an embodiment of this application. Figure 2 This is a second schematic diagram of a pen structure based on lateral force for refill extension control, according to an embodiment of this application. Figure 1 , Figure 2 As shown, the pen structure for controlling the extension and retraction of the pen tip based on lateral force includes: a pen barrel 1, a pen tip 2, a pen tip pusher 3, and a lateral force drive 4; wherein: the pen barrel 1 has an inner cavity, a pen tip opening 11, and a pen tail 12; the pen tip 2 is accommodated in the inner cavity with a gap and is located between the pen tip opening 11 and the pen tail 12; the pen tip pusher 3 is located between the pen tip 2 and the lateral force drive 4, and one end is in contact with the pen tip 2, and the other end is in contact with the lateral force drive 4 so that when the lateral force drive 4 receives the applied lateral force, the contact state between the lateral force transmission part 42 and the pen tip pusher 3 can be adjusted, thereby causing the pen tip 2 to extend and retract.

[0028] The solution provided in this application has the following technical advantages:

[0029] First, this structure demonstrates a significant advantage in terms of the flexibility of refill extension control. Because the side-force drive can accept side-force and the contact state between the side-force transmission part and the refill pusher is adjustable, the refill extension is achieved.

[0030] Secondly, from the perspective of ease of use, the side-control design provides a better user experience for specific usage scenarios and users. In scenarios where single-handed operation is required, such as outdoor recording or writing while holding the tool, users do not need to change their pen-holding posture. They can easily control the extension and retraction of the pen tip by simply applying side-control force with their fingers on the side of the pen barrel. This avoids the complexity and distraction caused by the traditional method of moving the hand to the top or bottom, greatly improving operational efficiency and safety. For people with limited hand dexterity or strength, such as the elderly, children, or those recovering from hand injuries, side-control operation requires less force and is simpler and more direct than traditional pressing or rotating operations. Because the side-control force can be flexibly adjusted according to the user's actual ability, it does not require overcoming the large spring resistance of traditional pressing methods, nor does it require precise thread rotation like rotating methods. This lowers the barrier to entry, allowing these special groups to use writing and drawing tools comfortably and conveniently, improving their writing and drawing experience and independent creative ability.

[0031] Furthermore, by abandoning the threaded structure at the end of the traditional rotating pen barrel, the problem of unstable pen lead control caused by thread wear is avoided. At the same time, the top-connected structure design between the side control force drive and the pen lead pusher is relatively simple and durable, reducing the possibility of failure due to complex mechanical structures affecting the normal use of the pen. This effectively extends the pen's lifespan, reduces maintenance costs during use, and provides users with a more reliable and durable writing and drawing tool.

[0032] Optionally, the side control force driving component 4 includes: a side control force receiving part 41 and a side control force transmitting part 42. The side control force receiving part 41 has a fixed end 411 and a movable end 412. The side control force transmitting part 42 has a first tiltable end 421 and a second tiltable end 422. The side control force receiving part 41 is fixed to the outer wall of the pen barrel 1 through the fixed end 411. The side control force receiving part 41 abuts against the first tiltable end 421 through the movable end 412 to receive the applied side control force. The side force transmission part 42 can rotate and its contact with the pen tip pusher 3 can be adjusted; the side force transmission part 42 is fixed in the inner cavity by a rotating shaft, and the first tiltable end 421 can abut against the movable end 412, and the second tiltable end 422 can abut against the pen tip pusher 3, so as to form the adjustable contact state and thereby allow the pen tip 2 to move toward the pen tip opening 11, or away from the pen tip opening 11, thereby allowing the pen tip 2 to extend and retract.

[0033] Therefore, the technical advantages of the aforementioned side control force drive component structure are explained as follows:

[0034] (1) Flexible pen refill extension function

[0035] Diverse operating methods lead to expanded functionality: The side-control force receiving part has a fixed end and a movable end, while the side-control force transmitting part has a first tiltable end and a second tiltable end. This unique structural design allows the pen to achieve lead extension and retraction through different forms of side-control operation. Users can press, slide, or apply force to the side of the pen barrel to make the movable end abut against the first tiltable end and transmit force to the side-control force transmitting part, thereby changing the contact state between it and the lead pusher, and realizing the extension and retraction of the lead. This side-control operation method breaks the limitation of traditional pens that only rely on top pressing or tail rotation, providing users with more operating options and expanding the application possibilities of the pen in different writing and drawing scenarios. For example, during drawing, users can quickly switch between extending and retracting the lead through a sliding operation, making it convenient to draw alternating parts of different line thicknesses; when writing, a simple pressing operation can extend the lead to the appropriate length for writing, making the pen adaptable to diverse creative needs and improving the flexibility of use.

[0036] Adjustable Top Contact State for Optimized Extension and Retraction Control: The adjustable top contact state between the side force transmission part and the lead pusher helps optimize the lead extension and retraction control. Although the lead extension and retraction length cannot be adjusted based on the amount of pressure, different operating methods and force variations can still change the top contact state, allowing the lead pusher to drive the lead movement in a suitable manner. For example, in calligraphy, the writer can change the top contact state by controlling the force and method of operation, allowing the lead to reach a position suitable for different font styles and strokes, simulating the lead state changes required at different stages such as the beginning, middle, and end of a stroke, making calligraphy more expressive. This, to some extent, overcomes the problem of the relatively fixed and inflexible traditional lead control structure, adding more operability to writing and painting creation.

[0037] (2) Improved ease of operation

[0038] Ergonomic side-control operation advantages: With the side-control force receiving part fixed to the outer wall of the pen barrel, users do not need to change their conventional grip posture. They can operate the pen simply by using their fingers on the side of the barrel, which conforms to the natural hand movement habits of the human body, making operation more convenient and comfortable. Compared with traditional pens that require moving the hand to the top of the barrel to press a button or rotating the tail, this greatly reduces the complexity of operation. Especially in scenarios that require quick note-taking or one-handed operation, such as painting outdoors while holding a drawing board in one hand and a pen in the other, or taking notes while flipping through documents in a meeting, this side-control operation allows users to easily control the extension and retraction of the pen tip without interrupting their creative process or thought process, significantly improving the efficiency and continuity of writing and drawing.

[0039] Adaptable to users with different operating habits and hand strength: This design demonstrates excellent adaptability to users with varying hand strength and operating habits. Regardless of the user's hand strength or skill level, they can control the lead extension and retraction using their preferred side control method. Unlike traditional push-button pens that require overcoming specific spring resistance to eject the lead, or rotary pens that require precise twisting of threads to control lead extension and retraction, each user can flexibly choose the operating force and method according to their own situation, making writing and drawing easier and more convenient, effectively lowering the barrier to entry and improving the pen's user experience for different user groups.

[0040] (3) Enhanced structural stability and durability

[0041] Avoiding the vulnerability of traditional structures: Traditional rotary pen refill control structures rely on threaded connections to function. After frequent use, these threads wear down easily, leading to unstable refill control and even affecting the pen's normal operation, thus shortening its lifespan. This design, however, uses a rotating shaft to fix the force transmission part within the inner cavity, avoiding this problem caused by thread wear. Its relatively simple and robust connection and transmission structure ensures good stability between components during long-term use, reducing the need for pen repair or replacement due to mechanical failure. This extends the pen's overall lifespan, improves its reliability as a writing and drawing tool, and saves users operating costs.

[0042] Stable force transmission ensures long-lasting functionality: The contact and force transmission structure formed between the side control force receiving part, the transmission part, and the refill pusher maintains a relatively stable state during force transmission. Each application of side control force is effectively converted into the refill's extension and retraction movement according to the designed structural path, preventing issues such as structural loosening, interruption of force transmission, or excessive deviation from affecting refill control. This stable force transmission mechanism ensures that the pen can still accurately perform the refill extension and retraction function after prolonged and repeated use, maintaining good writing and drawing performance and providing users with a consistently stable user experience.

[0043] Optionally, the end of the pen refill pusher 3 facing the side control force transmission part 42 has a structural end that can abut against the second tiltable end 422. The structure can form an adjustable top contact state so that the pen refill 2 can move toward the pen tip opening 11 or away from the pen tip opening 11.

[0044] Therefore, the technical benefits brought about by the above-mentioned pen refill pusher structure are explained as follows:

[0045] 1. Precise and flexible pen refill movement control

[0046] Precise Adjustment Capability: The pen tip pusher has a specific structural end that abuts against the second tiltable end of the side control force transmission part. This design allows the pen tip's extension and retraction to be precisely adjusted according to subtle changes in this top contact structure. When operating the pen, the user changes the magnitude, direction, or mode of application of the side control force, causing the side control force transmission part to rotate, which in turn changes the contact state between the second tiltable end and the pen tip pusher structural end. For example, during writing or drawing, when extremely small changes in pen tip extension length are required to draw intricate patterns or write very small characters, even a slight rotation of the side control force transmission part can be precisely displaced by the pen tip pusher due to the ingenious design of this top contact structure. This allows the pen tip to achieve millimeter-level or even smaller extension length adjustments, meeting the creative scenarios that require extremely high line precision—something that traditional, relatively coarse pen tip control structures cannot achieve.

[0047] Support for a wide range of motion modes: Due to its adjustable contact state, the pen lead can not only extend and retract simply, but also generate various motion modes under different contact angles and pressures. For example, in calligraphy, certain font styles require the pen lead to slightly vibrate or rotate during writing to simulate special brushstroke effects. By dynamically changing the contact state between the pen lead pusher and the side control force transmission part through side control operation, the pen lead can produce subtle angle changes or vibrations as it moves towards the pen tip, making the written strokes more rhythmic and expressive, greatly enriching the pen's expressive forms in writing and painting art creation.

[0048] II. Stable and reliable force transmission and pen refill drive

[0049] Efficient force transmission mechanism: The contact between the structural end and the second tiltable end creates an efficient force transmission path. When the lateral control force acts on the lateral control force drive and is transmitted to the lateral control force transmission part, the second tiltable end can apply the force to the structural end of the lead pusher in a more direct and stable manner, reducing force loss and dispersion during transmission. This means that the lateral control force applied by the user can be more effectively converted into the power to propel the lead, making the lead more responsive during extension and retraction. For example, in drawing scenarios that require rapid switching of lead extension length, such as when drawing variations in the thickness of lines in comics, efficient force transmission allows the lead to react almost instantly to the user's operation, improving the smoothness and efficiency of creation.

[0050] Reliable refill drive stability: The top-connecting structure between the refill pusher and the side force transmission part maintains stable contact and interaction during long-term use. Compared to the loosening and jamming problems that may occur in some traditional refill control structures, this design, through reasonable structural shape matching and material selection, ensures that the top-connecting part can still stably transmit force even with frequent refill extension and retraction operations and different usage environments, thus reliably driving the refill movement. This not only extends the pen's lifespan and reduces the need for repair or replacement due to structural failures, but also provides users with a consistent creative experience, allowing them to focus on the creative process without worrying about the stability of refill control.

[0051] III. Good compatibility and design extensibility

[0052] Adaptable to various refill types: This refill pusher design offers excellent compatibility, accommodating refills of different materials, diameters, and lengths. Whether it's traditional oil-based or water-based refills, or refills with special functions such as highlighters or fiber optic refills, as long as their dimensions are within a certain range, effective refill extension and retraction control can be achieved by adjusting the top connection parameters of the refill pusher and the side force transmission part. This allows pens based on this structure to be widely used in various writing and drawing tools, meeting the needs of different users for different refill types and providing strong support for the diversified design of pen products.

[0053] Facilitating Functional Module Integration and Upgrades: From the perspective of the pen's overall design, the refill pusher structure provides space for the integration and upgrade of subsequent functional modules. For example, if electronic sensing functions, such as pressure sensing and tilt angle sensing, are to be added to the pen to enable digital writing or drawing, the refill pusher structure can easily connect and work collaboratively with these electronic modules. Because of its adjustable contact with the side force transmission section, the signals generated by the electronic modules can be converted into precise control of the refill movement without altering the overall structural framework. This achieves an organic combination of traditional pen functions and modern electronic technology, enhancing the pen's intelligence and added value.

[0054] Optionally, the end of the pen refill pusher 3 facing the side control force transmission part 42 is wedge-shaped. The wedge shape serves as the structural end and can abut against the second tiltable end 422, so that the second tiltable end 422 can slide along the wedge shape and thereby form an adjustable contact state, thereby allowing the pen refill 2 to move toward the pen tip opening 11, or away from the pen tip opening 11.

[0055] Therefore, the technical advantages of using a wedge-shaped pen refill pusher are as follows:

[0056] 1. Precise and smooth pen lead control

[0057] Linear extension and retraction control: The wedge-shaped structure allows the second tiltable end to convert lateral force into a highly linear extension and retraction motion of the pen tip when sliding along its surface. Because the wedge's inclined surface has a stable slope, under the action of lateral force, the pen tip will correspondingly produce a fixed proportional extension and retraction displacement for every certain distance the second tiltable end slides. For example, when drawing engineering drawings, it is necessary to accurately draw lines of the same scale. By controlling the lateral force to slide the second tiltable end on the wedge, the user can precisely extend the pen tip to the appropriate length to draw lines of consistent width, meeting the stringent requirements of high-precision drawing for pen tip control. Compared to the nonlinearity or inaccuracy of some traditional pen tip control methods, this structure has significant advantages.

[0058] Sensitive force feedback and adjustment: The wedge-shaped structure provides an excellent force feedback mechanism. When the user applies lateral control force, the contact point between the second tilting end and the wedge dynamically changes with the magnitude and direction of the force. This change is quickly reflected in the extension and retraction of the pen tip. For example, in calligraphy, the writer can fine-tune the lateral control force according to the writing style and stroke requirements. Due to the sensitivity of the wedge-shaped structure, the pen tip can quickly make subtle adjustments, achieving a precise simulation of the brush tip changes during lifting and pausing in calligraphy, allowing the writer to better control the rhythm and expressiveness of the writing.

[0059] II. Structural Stability and Durability

[0060] Stable top-fitting structure: The wedge-shaped joint with the second tiltable end forms a stable mechanical structure. Even under frequent lateral forces and vibrations and friction from the refill's extension and retraction during long-term use, this wedge-shaped joint is unlikely to detach or misalign. For example, in high-intensity use scenarios such as daily writing by students and prolonged drawing by professionals, this structure maintains its integrity, ensuring continuous stability of the refill's control function, reducing the likelihood of the pen malfunctioning due to structural failure, and significantly improving the pen's lifespan and reliability.

[0061] Uniform force distribution and wear: When the second tiltable end slides along the wedge shape, the force distribution on the contact surface is relatively uniform. This means that during each refill extension / retraction operation, the wear on the contact area is relatively uniform, preventing localized excessive wear that could lead to structural failure. Compared to some traditional refill control structures where force is concentrated in certain points or areas, leading to rapid wear, the wedge structure maintains better performance over long-term use, reducing maintenance costs and replacement frequency, thus benefiting users in terms of both economy and ease of use.

[0062] III. Compact and Efficient Design

[0063] Space Utilization Optimization: The wedge-shaped structure achieves retractable pen tip control while maintaining a compact footprint. It eliminates the need for complex, bulky transmission mechanisms or additional space for force conversion and retractor movement control, allowing for efficient integration within the limited space of the pen barrel. This is particularly important for modern pen designs that prioritize compactness, portability, and multifunctionality, enabling pens to achieve a wealth of features while maintaining a slim profile, thus enhancing design freedom and market competitiveness.

[0064] Efficient Energy Conversion: From the perspective of energy transfer and conversion, the wedge-shaped structure can efficiently convert lateral control force into the energy of the pen tip's extension and retraction. Due to its simple and direct structure, it reduces energy loss in intermediate stages, allowing the energy applied by the user to be used to drive the pen tip to the maximum extent, improving the response speed and efficiency of pen tip control. For example, in drawing or writing scenarios that require rapid switching of pen tip states, such as frequently changing line thickness in comic book creation, this efficient energy conversion structure allows the pen tip to react quickly, improving the smoothness and efficiency of the creative process.

[0065] Optionally, the pen refill pusher 3 is a columnar structure, and the end of the columnar structure facing the side control force transmission part 42 has a protrusion, and the protrusion is provided with the wedge shape.

[0066] Optionally, the movable end 412 has a defined contour structure, which includes at least two action surfaces that can cause different displacement trends in the contacting component. When the first tiltable end 421 contacts the movable end 412 and is subjected to lateral control force, the first tiltable end 421 is displaced based on the two action surfaces. The displacement change causes the second tiltable end 422 to produce a corresponding linkage displacement. The linkage displacement makes the contact state between the lateral control force transmission part 42 and the pen refill pusher 3 adjustable.

[0067] Optionally, the contour structure is hill-shaped, with two opposing slopes, which serve as two surfaces that can cause different displacement tendencies in the components they contact.

[0068] Therefore, the technical advantages of the above-mentioned active end contour structure design are as follows:

[0069] I. Abundant pen refill control functions

[0070] Multi-mode lead extension: The special contour structure of the movable end, such as two hill-shaped slopes, allows the lead extension control to go beyond a simple single mode. When the first tiltable end contacts different slopes and is subjected to lateral control force, different displacement changes occur, which in turn cause different linked displacements in the second tiltable end. This allows the contact state between the lead pusher and the lateral control force transmission part to change in multiple ways. For example, in painting, the contact of one slope may correspond to a mode where the lead slowly extends to draw fine lines, while the other slope allows the lead to extend quickly for filling large areas or drawing thick lines, satisfying the diverse line expression needs in the painting process. This level of functionality is difficult to achieve with traditional single-structure pens.

[0071] Dynamic force feedback and control: This contour structure provides a dynamic force feedback mechanism. As the lateral control force changes in direction and magnitude across different slopes, the user can feel varying resistance, which is visually reflected in the extension and retraction of the pen tip. For example, in calligraphy, the writer can simulate various brushstroke variations such as lifting, pressing, and pausing by adjusting the lateral control force between the two slopes, making the writing more artistically expressive. Simultaneously, due to the dynamic nature of the force feedback, the writer can better control the pen tip, improving accuracy and expressiveness.

[0072] II. Optimized operating feel and ergonomics

[0073] A natural and comfortable user experience: The movable end is designed with a special contour structure that conforms to the natural operating habits and force application methods of the human hand. When the user performs side control operation on the side of the pen, the fingers can naturally apply lateral control force between the two slopes according to different creative needs, just like touching an object with different tactile areas, making the operation process smoother and more comfortable. Compared with the single and relatively rigid operation method of traditional pens, this design can reduce hand fatigue and improve the comfort of operation during long periods of writing or drawing, which is especially advantageous for professional creators or people who need to use pens frequently.

[0074] Precise one-handed operation convenience: In one-handed operation scenarios, such as outdoor sketching or note-taking while holding other items in one hand and operating the pen in the other, the specially contoured movable end makes it easier and more precise to control the extension and retraction of the pen tip with one hand. Users can easily switch the lateral control force between the two slopes on the side of the pen barrel using their thumb or other fingers to quickly adjust the pen tip state, without the need for complicated two-handed coordination or frequent adjustments to the grip posture. This greatly improves the efficiency and accuracy of one-handed operation and enhances the pen's practicality in special usage scenarios.

[0075] III. Structural Stability and Durability

[0076] Stable force transmission and structural fit: The contour structure of the movable end and the abutment design of the first tiltable end ensure the stability of force transmission. Even during long-term and frequent use, the adaptive and buffering nature of this structure effectively reduces structural loosening or damage caused by external impacts, vibrations, and other factors. For example, in daily writing or drawing, accidental collisions or uneven force application are inevitable. This special contour structure maintains stable force transmission, ensures the normal operation of the pen refill control function, extends the pen's lifespan, and reduces the frequency of repair or replacement due to structural failures.

[0077] Uniform wear distribution: When the first tilting end switches between the two slopes of the movable end and undergoes displacement, the slope design ensures a relatively uniform force distribution, resulting in consistent wear across all contact points. Unlike some traditional structures, it avoids rapid wear or even structural failure due to localized stress concentration. This uniform wear distribution helps maintain the performance stability of the pen refill control structure during long-term use, reducing issues such as decreased accuracy due to wear. From a long-term perspective, this improves the pen's reliability and economy.

[0078] Optionally, the side force receiving part 41 can be reused as a pen clip. Different decorative parts, cartoon animals, plants, and other elements can be attached to the pen clip.

[0079] Optionally, a protective sleeve 5 is provided on the outer wall of the pen barrel 1, and the protective sleeve 5 is close to the pen tip opening 11.

[0080] Optionally, an eraser 6 is also provided at the end of the pen 12, and its setting method is in addition to Figure 2 In addition to the method shown, it can also be achieved in the following ways:

[0081] A dedicated eraser holder is designed at the end of the pen (12). This holder can be made of the same or compatible material as the pen barrel (1), such as plastic, and can be integrally molded with the pen barrel (1) through injection molding, or fixed to the end of the pen (12) through secondary assembly. Inside the holder is a cylindrical groove, the diameter of which is slightly larger than the outer diameter of the eraser (6). For example, if the outer diameter of the eraser (6) is 5 mm, the groove diameter can be designed to be 5.2-5.5 mm. The depth depends on the length of the eraser (6), generally 1.2-1.5 times the length of the eraser (6), to ensure that the eraser (6) can be stably inserted. On the inner wall of the groove, some annular protrusions or textures, with a height of approximately 0.2-0.5 mm, can be provided to increase friction with the surface of the eraser (6) and prevent the eraser (6) from easily falling off during use. One end of the eraser (6) can be designed to match the shape of the bottom of the groove, such as a flat or slightly curved shape, for a better fit. When it is necessary to replace the eraser 6, it can be done by pulling out the old eraser 6 and then inserting the new eraser 6.

[0082] Alternatively, a rotatable eraser fixing device can be used. A fixing block with a shaft hole is installed at the end of the pen (12). A metal shaft is installed in the shaft hole, and both ends of the metal shaft are fixed to the fixing block by retaining springs to ensure stable rotation. The eraser (6) is fixed to a bracket connected to the metal shaft. The bracket can be made of plastic and injection molded to enclose part of the eraser (6). A suitable connecting structure is provided at the connection point with the metal shaft, such as a square groove that engages with a square protrusion on the metal shaft, allowing the eraser (6) to rotate around the metal shaft with the bracket. When the eraser (6) is not in use, it can be rotated to the side or below the pen (1) to avoid interfering with writing; when needed, it can be rotated to the position directly below the end of the pen (12) for easy erasing.

[0083] In a specific application scenario, the technical details of the above-mentioned solution in this application are as follows:

[0084] Pen barrel 1: Pen barrel 1 serves as the outer shell of the entire pen structure. It has an internal cavity, with the pen tip 11 at one end and the pen tail 12 at the other. The pen barrel 1 can be made of common plastics such as ABS plastic, which has good strength and processing performance, or metals such as aluminum alloy, which has a good texture and is sturdy. Its dimensions can be designed according to the size of a standard ballpoint pen or drawing pen; for example, the length can be 120-150 mm, and the outer diameter can be 8-12 mm, for convenient handheld use. The size of the internal cavity needs to be slightly larger than the outer diameter of the pen refill 2, ensuring that the pen refill 2 can be accommodated within the cavity with a gap and can move smoothly within it. The gap size is generally controlled to be between 0.5 and 1 mm.

[0085] Pen refill 2: Pen refill 2 can cover a variety of common writing and drawing refills, such as oil-based refills suitable for oil-based ballpoint pens, which offer smooth ink flow and long-lasting color; water-based refills commonly used in watercolor pens, which provide vibrant colors and are easy to clean; and fiber refills that offer smooth writing and delicate lines. Its length can be adapted to the inner length of the pen barrel 1, generally around 100-130 mm, with an outer diameter in the range of 2-5 mm, ensuring stable placement within the inner cavity of the pen barrel 1 and positioned between the pen tip opening 11 and the pen tail 12. The pen tip can adopt conventional ballpoint tip, syringe tip, or fiber tip designs to meet different writing and drawing needs.

[0086] Pen refill pusher 3: The pen refill pusher 3 is a columnar structure. Its material can be a wear-resistant and high-strength engineering plastic such as POM plastic, which has a low coefficient of friction and good mechanical properties. The diameter of the columnar structure can be set according to the internal space of the pen barrel 1 and its fit with other components, for example, 4-6 mm. The length is designed according to the actual refill extension stroke requirements, approximately in the range of 15-25 mm.

[0087] A protrusion is provided at one end of the columnar structure facing the side force transmission part 42. The shape of the protrusion can be semi-circular or rectangular, and its protrusion height is approximately 2-3 mm. A wedge shape is formed on the protrusion. The slope angle of the wedge can be designed between 15 and 45 degrees, for example, 30 degrees is commonly used. The length of the slope is determined according to the extension stroke of the pen refill and the force transmission requirements, and is generally 5-10 mm. The surface roughness of the wedge needs to be controlled between Ra0.8 and Ra1.6 to ensure that the second tiltable end 422 can slide smoothly along it to realize the extension control of the pen refill 2.

[0088] Side control force drive component 4:

[0089] Side control force receiving part 41:

[0090] Overall structure and materials: The side force receiving part 41 has a fixed end 411 and a movable end 412. The whole can be made of metal materials with certain elasticity and toughness, such as stainless steel sheet with a thickness of about 0.5-1 mm, or high-strength engineering plastics such as PA plastic.

[0091] Fixed end 411: The fixed end 411 is fixed to the outer wall of the pen barrel 1 by welding to metal materials, using a clip, or adhesive bonding to plastic materials. The fixed position is generally about 20-30 mm away from the pen tip opening 11, which facilitates the application of lateral control force by the fingers. The connection of the fixed end 411 must be secure and reliable. This can be achieved by setting a corresponding groove or protrusion structure on the outer wall of the pen barrel 1 to match the shape of the fixed end 411, preventing it from loosening or shifting during use.

[0092] Movable End 412: The movable end 412 has a defined contour structure, which is hill-shaped. The two slopes of the hill shape serve as surfaces that allow for different displacement tendencies in the contacting components. The overall height difference of the hill shape, i.e., the vertical distance between the apex and the lowest point of the two slopes, can be designed to be between 2 and 4 mm. The length of the slope is approximately 5 and 8 mm. The curvature of the slope must ensure a smooth transition when in contact with the first tiltable end 421, avoiding any jamming. The angles between the two slopes and the bottom surface can be designed to be 30-60 degrees and 120-150 degrees respectively, so that different displacement changes can be produced when lateral control forces are applied to different slopes. In addition, the movable end 412 can be reused as a pen clip. When used as a pen clip, its clip width can be designed to be 58 mm, which can be easily clipped onto books, clothing pockets, and other objects. The clamping force is moderate, ensuring that the pen will not easily fall off, but also preventing damage to the clipped object due to excessive clamping force.

[0093] Side control force transmission part 42:

[0094] Overall Structure and Installation: The side-control force transmission part 42 has a first tiltable end 421 and a second tiltable end 422. Its main body can be made of lightweight and sufficiently strong plastic such as PP plastic or aluminum alloy, and is fixed to the inner cavity of the pen barrel 1 by a rotating shaft. The rotating shaft can be a metal shaft with a diameter of 12 mm, such as a stainless steel shaft, and is installed at approximately 1 / 3 of its length from both ends of the side-control force transmission part 42 to ensure stable rotation around the shaft. A bushing made of wear-resistant nylon or similar material can be provided at the mating point between the rotating shaft and the inner wall of the pen barrel 1 to reduce friction and improve the flexibility and stability of rotation. It should be noted that the rotating shaft can also be implemented using a boss and groove mating mechanism.

[0095] The first tiltable end 421 and the second tiltable end 422: The first tiltable end 421 can be designed as an arc-shaped protrusion with a height of approximately 12 mm. Its contact area with the slope of the movable end 412 is moderate, ensuring effective force transmission. The second tiltable end 422 can also be an arc-shaped structure, adapted to the wedge-shaped structure of the pen refill pusher 3. When in contact with the wedge, the radius of the arc matches the angle and width of the wedge's slope, allowing for smooth sliding along the wedge while maintaining good force transmission during the sliding process.

[0096] Protective sleeve 5: A protective sleeve 5 is provided on the outer wall of the pen barrel 1 near the pen tip opening 11. The protective sleeve 5 can be made of soft rubber such as silicone, which is comfortable to the touch and has a certain degree of anti-slip properties, or thermoplastic elastomer TPE, which is elastic and wear-resistant. The length of the protective sleeve 5 can be 10-20 mm and the thickness is about 1-2 mm. Its main function is to increase the comfort of holding the pen and prevent the pen tip opening 11 from being damaged by impact during the placement or use of the pen. The protective sleeve 5 can be fixed to the pen barrel 1 by nesting or gluing.

[0097] Detailed process and principle of how the various components work together to achieve the extension and retraction of the pen refill

[0098] Initial state: In the initial state of the pen, the pen tip 2 is located in the inner cavity of the pen barrel 1. One end of the pen tip pusher 3 is in contact with the pen tip 2, and the wedge-shaped structure at the other end is in contact with the second tiltable end 422 of the side control force transmission part 42. The first tiltable end 421 of the side control force transmission part 42 is also in contact with the movable end 412 of the side control force receiving part 41. The second tiltable end 422 is kept in the tilted state, and the first tiltable end 421 is kept in the pressed state. Therefore, the pen tip pusher 3 is in the retracted state. At this time, the pen tip 2 is also in the retracted state. For example, in the application of a ballpoint pen, it does not extend out of the pen tip opening 11. The whole structure is in a relatively static and stable state.

[0099] Action process when applying lateral control force

[0100] Operation method and force transmission path: The user applies lateral control force to the movable end 412 of the lateral control force receiving part 41 by pressing or sliding on the side of the pen barrel 1. Taking pressing as an example, when the finger presses on a certain slope of the movable end 412, the force is transmitted through the movable end 412 to the first tiltable end 421 of the lateral control force transmitting part 42 that is in contact with it, so that the first tiltable end 421 changes from a pressed state to a tilted state, thereby causing the lateral control force transmitting part 42 to rotate around the rotation axis. During the rotation, the second tiltable end 422 changes from a tilted state to a pressed state, thereby sliding along the wedge-shaped structure of the pen refill pusher 3, changing the contact state between the lateral control force transmitting part 42 and the pen refill pusher 3.

[0101] When pressed on a gentle slope, the first tiltable end 421 undergoes a small displacement, causing the second tiltable end 422 to slide slowly along the wedge shape. This results in a small displacement of the pen tip pusher 3, which in turn pushes the pen tip 2 to extend a short distance towards the pen tip opening 11. This is suitable for writing fine text and drawing delicate lines. When pressed on a steep slope, the first tiltable end 421 undergoes a larger displacement, and the second tiltable end 422 slides quickly along the wedge shape. The pen tip pusher 3 pushes the pen tip 2 to extend quickly and significantly towards the pen tip opening 11. This is suitable for drawing thick lines and filling large areas. Similarly, the reverse operation, i.e., applying lateral force away from the pen tip opening 11, retracts the pen tip 2, achieving flexible control over the extension and retraction of the pen tip.

[0102] To maintain the length of the pen lead, the following method can be used:

[0103] Utilization of friction between components

[0104] Between the pen refill pusher and the pen refill: At the point where the pen refill pusher 3 and the pen refill 2 meet, the surface can be appropriately textured or coated with a small amount of friction material. For example, the end of the pen refill pusher 3 that contacts the pen refill 2 can be frosted, increasing the surface roughness to between Ra0.8 and Ra1.6. When the pen refill 2 extends to the desired length, this friction prevents it from retracting under minor external forces. This is analogous to placing an object with sufficient friction on an inclined plane; when the friction is large enough, the object will not easily slide down.

[0105] Between the side force transmission part 42 and the pen refill pusher: The friction between the second tiltable end 422 of the side force transmission part 42 and the wedge-shaped structure of the pen refill pusher 3 also plays a crucial role. During the design process, material selection and surface treatment are considered to maintain the coefficient of friction between the two at a suitable value. For example, experiments have shown that when the pen refill 2 extends to the target length, the static friction between the second tiltable end 422 and the wedge-shaped structure can resist the tendency of the pen refill 2 to retract. Friction can be increased by modifying the surface of the contact materials, such as by plasma treatment of plastic materials, to improve their surface energy.

[0106] Preload design between structures

[0107] Initial preload setting: During the initial assembly of the pen, a certain preload is set between the side force transmission part 42 and the pen refill pusher 3. The magnitude of this preload is determined through precise experiments and calculations, and is generally between 0.5 and 1 N. When the pen refill 2 extends to the required length, this preload ensures a tight fit between the components. For example, by incorporating an elastic element such as a small spring in the mounting structure of the side force transmission part 42, the spring is initially under a certain compression state, applying a force towards the pen refill pusher 3 to the side force transmission part 42. When the pen refill 2 extends, this preload still maintains stable contact between the components, preventing the pen refill 2 from retracting.

[0108] Equilibrium of forces and dynamic stability

[0109] Balancing with external forces: When the pen tip 2 extends, it generates a reaction force upon contact with the writing surface, such as paper. During writing, the user can adjust their grip and pressure to balance this reaction force with the force of the pen tip 2 retracting. For example, when writing fine characters, the pen tip 2 extends to a shorter length; the user can slightly increase their grip to balance the friction between the pen tip 2 and the paper surface with other external forces acting on the pen barrel 1, thus maintaining the extended length of the pen tip 2.

[0110] Stability and precision assurance in force transmission

[0111] Throughout the force transmission process, the design of the contact points between the components ensures that the force can be transmitted stably and effectively. For example, at the contact point between the side force receiving part 41 and the side force transmitting part 42, the shape and size of the contact surface are designed in a reasonable way to prevent the force from being dispersed or interrupted. The wedge-shaped sliding fit between the side force transmitting part 42 and the pen refill pusher 3 ensures that the contact state can be flexibly adjusted according to changes in force, and can also efficiently convert the force into the extension and retraction movement of the pen refill 2, avoiding unstable force transmission caused by problems such as loose structure or excessive gaps in the fit.

[0112] Due to the linear characteristics of the wedge-shaped structure of the pen refill pusher 3 and the precise dimensional fit between the components, the extension length of the pen refill 2 can be controlled with considerable precision according to the magnitude, direction, and operation method of the lateral control force. For example, in writing or drawing, by repeatedly practicing and becoming familiar with the extension effect of the pen refill 2 corresponding to different lateral control force operations, users can achieve millimeter-level or even smaller adjustments to the extension length of the pen refill 2, meeting the creative needs of those requiring extremely high line fineness.

[0113] The following design considerations were taken into account regarding the structural durability and reliability:

[0114] Measures to avoid wear and structural failure

[0115] The hill-shaped slope design of the movable end 412 and the wedge-shaped sliding engagement between the second tiltable end 422 and the pen refill pusher 3 ensure a relatively uniform force distribution across all contact points during long-term, frequent operation. For example, after multiple pen refill extension and retraction operations, simulation tests, such as using a friction and wear testing machine to simulate a certain number of operations, revealed that the wear degree of each contact point was basically consistent, preventing localized excessive wear that could lead to structural failure. For instance, the second tiltable end 422 would not be unable to slide smoothly along the wedge shape due to severe wear at a single point, and the slope of the movable end 412 would not experience poor contact with the first tiltable end 421 due to wear, thus ensuring the long-term stable operation of the structure.

[0116] The specific materials used in each component possess excellent wear resistance, and surface treatments can be applied to key contact areas to further enhance wear resistance. For example, quenching is performed on the contact surface between the rotating shaft and the bushing for metal materials, or a wear-resistant coating is added for plastic materials to improve surface hardness and smoothness, reducing friction and wear. The wedge-shaped surface of the pen refill pusher 3 is polished to reduce surface roughness, making it less prone to wear during long-term sliding contact with the second tiltable end 422.

[0117] Resisting external impacts and ensuring structural stability

[0118] The contact design between the movable end 412 and the first tiltable end 421, as well as the installation and fixing method of the entire side control force drive component 4 within the inner cavity of the pen barrel 1, both take into account the impact of external forces. In daily use, even if the pen is subjected to accidental drops, collisions, or other external forces, the elastic fit between the components—such as the elastic deformation capability of the movable end 412 itself and the buffer gap between the rotating shaft and the bushing—effectively absorbs and disperses external forces, reducing damage to the structure, maintaining stable force transmission, and ensuring the normal operation of the pen refill control function. For example, after multiple simulated drop tests, the pen was dropped freely from a certain height, such as about 1 meter, onto a hard surface. After the impact, the pen maintained the normal position of all components, and the refill extension function remained unaffected, ensuring the pen's reliability under different usage environments.

[0119] In addition, this application embodiment also provides a pen retractable drive structure, which includes: the above-mentioned pen retractor pusher 3 and the above-mentioned side control force drive member 4. The pen retractor pusher 3 is located between the pen retractor 2 and the side control force drive member 4, and one end is in contact with the pen retractor 2 and the other end is in contact with the side control force drive member 4, so that when the side control force drive member 4 receives the applied side control force, the contact state between the side control force transmission part 42 and the pen retractor pusher 3 can be adjusted, thereby causing the pen retractor 2 to extend or retract.

[0120] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pen structure for controlling the extension and retraction of the pen tip based on lateral force, characterized in that, include: Pen barrel (1), pen refill (2), pen refill pusher (3), and side control force drive (4); wherein: the pen barrel (1) has an inner cavity, a pen tip opening (11), and a pen tail (12); the pen refill (2) is accommodated in the inner cavity in a gap manner and is located between the pen tip opening (11) and the pen tail (12); the pen refill pusher (3) is located between the pen refill (2) and the side control force drive (4), and one end is in contact with the pen refill (2), and the other end is in contact with the side control force drive (4) so ​​that when the side control force drive (4) receives the applied side control force, the contact state between the side control force transmission part (42) and the pen refill pusher (3) can be adjusted, thereby allowing the pen refill (2) to extend and retract.

2. The pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 1, characterized in that, The side control force drive (4) includes a side control force receiving part (41) and a side control force transmitting part (42). The side control force receiving part (41) has a fixed end (411) and a movable end (412). The side control force transmitting part (42) has a first tiltable end (421) and a second tiltable end (422). The side control force receiving part (41) is fixed to the outer side wall of the pen barrel (1) through the fixed end (411). The side control force receiving part (41) abuts against the first tiltable end (421) through the movable end (412) to receive the applied side control force. The control force causes the side control force transmission part (42) to rotate and the contact state between it and the pen tip pusher (3) is adjustable; the side control force transmission part (42) is fixed in the inner cavity by a rotating shaft, and the first tiltable end (421) can abut against the movable end (412), and the second tiltable end (422) can abut against the pen tip pusher (3) to form the adjustable contact state and thereby allow the pen tip (2) to move toward the pen tip opening (11) or away from the pen tip opening (11), thereby allowing the pen tip (2) to extend and retract.

3. The pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 2, characterized in that, The pen tip pusher (3) has a structural end that can abut against the second tiltable end (422) at one end facing the side control force transmission part (42). The structure can form an adjustable top contact state so that the pen tip (2) can move toward the pen tip opening (11) or away from the pen tip opening (11).

4. The pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 3, characterized in that, The end of the pen refill pusher (3) facing the side control force transmission part (42) is wedge-shaped. The wedge shape serves as the structural end and can abut against the second tiltable end (422), so that the second tiltable end (422) can slide along the wedge shape and thereby form an adjustable contact state, thereby allowing the pen refill (2) to move toward the pen tip opening (11) or away from the pen tip opening (11).

5. A pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 4, characterized in that, The pen tip pusher (3) is a columnar structure. The end of the columnar structure facing the side control force transmission part (42) has a protrusion, and the protrusion has the wedge shape.

6. The pen structure according to claim 3, characterized in that, The movable end (412) has a set contour structure, which includes at least two action surfaces that can cause different displacement trends of the contacting parts. When the first tiltable end (421) contacts the movable end (412) and is subjected to lateral control force, the first tiltable end (421) is displaced based on the two action surfaces. The displacement change causes the second tiltable end (422) to produce a corresponding linkage displacement. The linkage displacement makes the contact state between the lateral control force transmission part (42) and the pen refill pusher (3) adjustable.

7. A pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 6, characterized in that, The outline structure is hill-shaped, with two opposing slopes, which serve as two surfaces that can cause different displacement tendencies in the components they contact.

8. A pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 7, characterized in that, The side force receiving part (41) is reused as a pen clip.

9. A pen structure for controlling the extension and retraction of the pen tip based on lateral force according to claim 8, characterized in that, The outer wall of the pen barrel (1) is provided with a protective sleeve (5), which is close to the pen tip opening (11).

10. A pen refill telescopic drive structure, characterized in that, include: The pen refill pusher (3) and the side control force drive (4) are located between the pen refill (2) and the side control force drive (4), with one end abutting against the pen refill (2) and the other end abutting against the side control force drive (4), so that when the side control force drive (4) receives the applied side control force, the abutting state between the side control force transmission part (42) and the pen refill pusher (3) can be adjusted, thereby causing the pen refill (2) to extend and retract.

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