Pen structure based on pulling operation and refill telescopic driving structure

Abstract

The utility model provides a pen structure based on pulling operation and a pen refill telescopic driving structure. The pen structure based on the pulling operation comprises a pen holder, a pen refill, a pen refill driving piece and a pulling operation 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 driving piece is located between the refill and the pulling operation piece, one end of the refill driving piece is connected with the refill in a clamped mode, and the other end of the refill driving piece is connected with the pulling operation piece in an abutting mode so that when the pulling operation piece is pulled, the fixing shaft portion can drive the refill driving piece to stretch out and draw back, and accordingly the refill is driven to stretch out and draw back.

Description

Technical Field

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

[0002] In the field of writing instruments, structural innovation of pens has always been an important research direction, aiming to meet people's increasingly diverse writing needs and user experiences. Traditional pen structures typically include a pen barrel, a refill, and some common operating components that drive the refill's extension and retraction. For example, a push-button pen structure uses a spring or other mechanical structure to extend or retract the refill by pressing a button at the end of the pen; while a rotary pen structure uses the rotation of the pen barrel or a specific component to drive an internal transmission mechanism to switch the refill or extend or retract it.

[0003] However, existing pen structures have certain limitations. The springs in push-button pens may lose elasticity after prolonged use, leading to instability in the refill extension function. Furthermore, the push-button operation is not ideal for some users in terms of ease of use and pressure control; for example, some users may find the required pressure too strong, easily causing hand fatigue, or the refill may extend accidentally during carrying. As for rotary pens, their internal transmission mechanisms are more complex, involving the coordination of multiple components. This not only increases manufacturing costs and difficulty but also makes them prone to problems such as refill switching or refill failure due to component wear or improper fit. Additionally, the rotary operation may not be intuitive or convenient, requiring a certain amount of operating space, making it unsuitable for use in confined spaces or during rapid writing.

[0004] In addition, traditional pen structures are lacking in meeting personalized and innovative user experiences. As users' needs for pen usage continue to evolve, there is a need for a more novel, simpler, more intuitive, and reliable pen structure. Utility Model Content

[0005] The purpose of this application is to provide a pen structure and a pen retraction drive structure based on a prying operation, so as to overcome or alleviate the above-mentioned technical problems in the prior art.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A pen structure based on a prying operation includes: a pen barrel, a pen refill, a pen refill driver, and a prying operation component; wherein: the pen barrel has an inner cavity, a pen tip opening, and a pen tail; the pen refill is accommodated in the inner cavity with a gap and is located between the pen tip opening and the pen tail; the pen refill driver is located between the pen refill and the prying operation component, with one end clamped to the pen refill and the other end abutting against the prying operation component so that when the prying operation component is pryed, the fixed shaft portion drives the pen refill driver to extend and retract, thereby driving the pen refill to extend and retract.

[0008] Optionally, the actuating component includes an actuating part and a fixed shaft part. The actuating part has an actuating core lifting part and an actuating transmission end. The fixed shaft part has a first connecting end and a second connecting end. The actuating part is connected to the first connecting end through the actuating core lifting part and protrudes from the outer wall of the pen barrel. The actuating part is connected to the first connecting end through the actuating transmission end to receive an applied actuating driving force. The actuating driving force causes the fixed shaft part to extend and retract, thereby driving the pen refill driver to extend and retract. The fixed shaft part is slidably accommodated in the inner cavity, and the first connecting end is connectable to the actuating transmission end, and the second connecting end is connectable to the pen refill driver to form an adjustable extension and retraction state, thereby allowing the pen refill to move toward the pen tip opening or away from the pen tip opening, thereby driving the pen refill to extend and retract.

[0009] Optionally, the end of the pen refill drive facing the fixed shaft has a lifting part that can be connected to the second connecting end. The lifting part forms the adjustable telescopic state so that the pen refill moves toward or away from the pen tip opening.

[0010] Optionally, the end of the pen refill drive facing the fixed shaft is a rotating wheel docking structure. The rotating wheel docking structure serves as the core lifting part and can be connected to the second connecting end, so that the second connecting end can be rotated and thereby form an adjustable telescopic state, thereby allowing the pen refill to move toward the pen tip opening, or away from the pen tip opening.

[0011] Optionally, the pen refill drive is a columnar structure, and one end of the columnar structure facing the fixed shaft has an elastic element. The second connecting end is connected to the elastic element to form the wheel docking structure.

[0012] Optionally, the pen refill drive includes a first clamping portion and a second clamping portion. The first clamping portion is connected to the fixed shaft portion so that when the prying operation member is pried, the fixed shaft portion drives the first clamping portion to extend or retract. The second clamping portion is connected to the first clamping portion so that when the first clamping portion is pried, the second clamping portion and the pen refill form a linkage cooperation, so that the pen refill can move toward the pen tip opening or away from the pen tip opening.

[0013] Optionally, the first clamping part includes: a clamping end and a clamping wire, the clamping end being fixed to the clamping wire, and the clamping wire being connected to the fixed shaft part, so that when the prying operation member is pryed, the fixed shaft part drives the first clamping part to extend and retract.

[0014] Optionally, the second clamping part includes a first rotating wheel and a second rotating wheel. The first rotating wheel is connected to the first clamping part, and the first rotating wheel and the second rotating wheel are connected by an elastic member to compress the prying operation member. When the prying operation member is pryed, the prying driving force is transmitted to the pen tip so that the pen tip can move toward the pen tip opening or away from the pen tip opening.

[0015] Optionally, the portion of the actuating component exposed outside the pen barrel is fitted with a rotating sleeve, and / or, the outer wall of the pen barrel is provided with a protective sleeve, the protective sleeve being close to the pen tip opening.

[0016] This application embodiment also provides a pen retraction drive structure, which includes: a pen retraction drive component and a prying operation component; the pen retraction drive component is located between the pen retraction component and the prying operation component, and one end is clamped to the pen retraction component, and the other end is abutted to the prying operation component so that when the prying operation component is pryed, the fixed shaft portion drives the pen retraction drive component to extend and retract, thereby driving the pen retraction and retraction.

[0017] The solution provided in this application has the following technical advantages:

[0018] 1. Avoid the problem of weakened spring elasticity:

[0019] In traditional push-button pens, the refill tip extends and retracts using a spring. Over time, the spring's elasticity weakens, leading to instability in the refill tip's extension and retraction. This affects the writing experience, potentially causing the refill to fail to extend or retract properly, and even impacting the smoothness of writing.

[0020] This pen structure, based on a lever-operated mechanism, does not rely on a spring to drive the retractor's extension and retraction. Instead, when the lever-operated component 4 is levered, the fixed shaft 42 drives the retractor's drive component 3 to extend and retract, thereby causing the retractor 2 to extend and retract. By eliminating the use of a spring, the instability in retractor extension and retraction caused by spring elasticity variations is avoided, ensuring stable and reliable retractor operation even during long-term use, thus guaranteeing consistent and smooth writing.

[0021] 2. Improve ease of operation and control of force:

[0022] The push-button pen design can be cumbersome for some users, requiring significant pressure and causing hand fatigue. It also offers limited ease of use. Furthermore, accidental activation of the pen tip during transport can cause it to extend, adding to the inconvenience.

[0023] The prying operation is generally more flexible than the pressing operation, allowing users to easily control the force and range of motion according to their needs. The design of the prying operation component 4 provides users with a completely new operating method. This method is more intuitive than the pressing operation, and the force can be flexibly adjusted according to the user's prying strength. Users can operate according to their own habits, reducing hand fatigue. Furthermore, the prying operation is less prone to accidental activation than the pressing operation, giving users more peace of mind when carrying it. This is because the prying action usually requires a certain amount of operating space and range of motion, effectively preventing the pen lead from extending due to accidental contact, thus improving both convenience and safety.

[0024] 3. Simplify the structure, reduce costs, and improve reliability:

[0025] The internal transmission mechanism of a rotary pen is quite complex, involving the coordination of multiple parts. This not only increases the cost and difficulty of manufacturing, but also makes it prone to problems such as pen tip switching or extension function failure due to wear of parts or improper coordination.

[0026] The pen structure of this design mainly consists of a pen barrel 1, a pen refill 2, a pen refill drive component 3, and an actuating component 4, making it relatively simple. Its working principle involves actuating the actuating component 4 to drive the pen refill to extend or retract, eliminating the need for complex transmission mechanisms and reducing the number of mating parts and vulnerable components. This reduces manufacturing costs by decreasing the number of parts and complex processing and assembly procedures. Furthermore, the simple structure reduces the risk of malfunctions due to improper component fit, improving the reliability and lifespan of the pen structure, and facilitating large-scale production and widespread adoption.

[0027] 4. Adaptable to more usage scenarios:

[0028] The rotating pen structure is not intuitive to operate and requires a certain amount of space, making it unsuitable for use in confined spaces or when writing quickly, thus limiting its usage scenarios.

[0029] The retractable pen tip is relatively flexible and does not rely on a large operating space. Whether on a narrow desktop, in a crowded work environment, or writing outdoors, users can easily extend and retract the pen tip without being limited by space. Moreover, the retractable pen tip is relatively quick, meeting users' requirements for convenient pen operation when writing quickly, thus expanding the pen's range of applications and providing users with a wider range of usage scenarios. Attached Figure Description

[0030] 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:

[0031] Figure 1 This is a schematic diagram of the external form of a pen structure based on a prying operation, according to an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of a pen structure based on a prying operation, according to an embodiment of this application.

[0033] Figure 3 This is a schematic diagram of another pen structure based on a prying operation according to an embodiment of this application. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] like Figures 1-3 As shown in the embodiment of this application, the pen structure based on a prying operation includes: a pen barrel 1, a pen core 2, a pen core drive 3, and a prying operation 4; wherein: the pen barrel 1 has an inner cavity, a pen tip opening 11, and a pen tail 12; the pen core 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 core drive 3 is located between the pen core 2 and the prying operation 4, and one end is clamped to the pen core 2, and the other end is abutted against the prying operation 4 so that when the prying operation 4 is pryed, the fixed shaft portion 42 drives the pen core drive 3 to extend and retract, thereby driving the pen core 2 to extend and retract.

[0037] Optionally, the actuating component 4 includes an actuating part 41 and a fixed shaft part 42. The actuating part 41 has an actuating lifting core part 411 and an actuating transmission end 412. The fixed shaft part 42 has a first connecting end 421 and a second connecting end 422. The actuating part 41 is connected to the first connecting end 421 through the actuating lifting core part 411 and protrudes from the outer side wall of the pen barrel 1. The actuating part 41 is connected to the first connecting end 421 through the actuating transmission end 412 to receive applied force. The prying driving force causes the fixed shaft portion 42 to extend and retract, thereby driving the pen refill drive member 3 to extend and retract. The fixed shaft portion 42 is slidably accommodated in the inner cavity, and the first connecting end 421 is connectable to the prying transmission end 412, and the second connecting end 422 is connectable to the pen refill drive member 3, so as to form an adjustable extension and retraction state and thereby allow the pen refill 2 to move toward the pen tip opening 11, or away from the pen tip opening 11, thereby driving the pen refill 2 to extend and retract.

[0038] Specifically, in other possible embodiments, the specific implementation of the above solution may differ from the above. Figures 1-3 The specific structural forms shown are used to achieve alternative structures, as detailed below:

[0039] 1. Turn the operating part 41.

[0040] Turn and lift the core 411:

[0041] The prying lever 411 can be designed as an outwardly extending sheet or protrusion protruding from the outer wall of the pen barrel 1 for user operation. Its shape can be semi-elliptical or rectangular, with a length of approximately 15mm, a width of approximately 8mm, and a thickness of approximately 3mm. To facilitate the user's application of prying force, its surface can be provided with anti-slip textures, such as fine horizontal lines or raised dots, to increase friction.

[0042] Injection molding can be used, employing wear-resistant and somewhat flexible plastic materials such as polycarbonate (PC) or acrylonitrile-butadiene-styrene copolymer (ABS). During the injection molding process, the anti-slip texture is directly molded onto the surface.

[0043] Turn the transmission end 412:

[0044] It has a rod-shaped structure, integrally formed with the prying core 411, with a diameter of approximately 4mm and a length of approximately 25mm. Its end can be designed with a square or hexagonal cross-section to achieve a firm connection with the first connecting end 421 and torque transmission.

[0045] The core 411 is injection molded simultaneously with the prying mechanism to ensure the connection strength between the two. For applications requiring higher strength, internal metal reinforcing ribs can be embedded, which can be achieved through secondary injection molding or by inserting metal inserts.

[0046] 2. Fixed shaft part 42

[0047] The first connecting end 421 has a shape that matches the end of the levering drive end 421. If the levering drive end 421 has a square cross-section, then the inside of the first connecting end 421 is a corresponding square hole, with dimensional accuracy controlled within ±0.1mm to ensure a tight fit. To ensure connection stability, small protrusions or grooves can be provided inside the hole to match the corresponding structure of the levering drive end 421 and prevent relative rotation.

[0048] Injection molding is employed, and polyoxymethylene (POM) can be used as the material to ensure its hardness and wear resistance. After injection molding, the internal shape of the first connecting end 421 is precision machined, such as using precision molds and CNC machining, to ensure its shape accuracy.

[0049] The second connecting end 422 is cylindrical with a diameter of approximately 5 mm. It has an annular groove or protrusion with a groove depth of approximately 1.5 mm and a protrusion height of approximately 1.5 mm. It is used for connection with the pen refill driver 3. Its position can be determined according to the extension stroke of the pen refill 2 and the structural design of the pen refill driver 3 to ensure effective transmission of driving force.

[0050] It can be injection molded, allowing for precise control of the dimensions of the annular grooves or protrusions during the molding process. To ensure its strength and wear resistance, chrome plating can be applied to the surface to improve surface hardness and wear resistance.

[0051] The fixed shaft portion 42 is slidably housed within the inner cavity of the pen barrel 1, with its outer diameter being 0.5-1mm smaller than the inner diameter of the pen barrel 1's inner cavity to ensure smooth sliding. To ensure the linearity and stability of the sliding, guide strips or guide grooves can be machined on the outer surface of the fixed shaft portion 42, and corresponding guide grooves or guide strips are provided at corresponding positions within the inner cavity of the pen barrel 1 to prevent rotation during sliding.

[0052] 3. Pen refill driver 3

[0053] One end is a lifting core that is connected to the second connecting end 422. The lifting core can be designed to match the annular groove or protrusion of the second connecting end 422, such as a disc with an annular protrusion. The disc has a diameter of about 10 mm and a thickness of about 4 mm. The annular protrusion matches the groove of the second connecting end 422.

[0054] The first clamping part 31 can be designed with a clamping structure, which clamps the pen refill 2 by opening and closing the clamp. The clamp can consist of two movable arms, each about 10mm long and 3mm wide, connected by a hinge structure with a hinge shaft diameter of about 2mm. The second clamping part 32 can be designed as a push rod connected to the first clamping part 31. The push rod has a diameter of about 3mm and its length is determined according to the extension and retraction stroke of the pen refill 2, typically 20-30mm.

[0055] The core can be injection molded from POM. For the first clamping part 31 and the second clamping part 32, the clamping arms can be made of metal such as stainless steel by stamping, and then connected by a pivot pin to form a hinge structure. The push rod can be made of plastic injection molding or metal machining. For metal push rods, it can be machined by lathe or milling machine, and for plastic push rods, it can be injection molded.

[0056] The connection method and assembly process are as follows:

[0057] 1. Adjust the connection between the operating part 41 and the fixed shaft part 42:

[0058] The actuating drive end 412 of the actuating operating part 41 is inserted into the first connecting end 421 of the fixed shaft part 42, and the two are firmly connected by interference fit or shape fit, such as square or hexagonal shape fit. During assembly, special tooling can be used to ensure the perpendicularity and depth of insertion and prevent assembly misalignment.

[0059] 2. Connection between the fixed shaft part 42 and the pen refill drive component 3:

[0060] Align the annular protrusion of the tip-lifting part of the pen tip driver 3 with the annular groove of the second connecting end 422 of the fixed shaft part 42, and then assemble it into place by pressing or rotating. During the assembly process, a special positioning jig can be used to ensure that the connection position of the two is accurate and that the driving force can be accurately transmitted in subsequent prying operations.

[0061] 3. Connection between pen refill driver 3 and pen refill 2:

[0062] For the clamping structure of the first clamping part 31 of the pen refill drive 3, the pen refill 2 is placed into the opening of the clamp, and the clamp is closed manually or by a simple mechanical device to clamp the pen refill 2. The clamping force can be controlled by the elastic structure on the clamping arm, such as an elastic sheet or a spring, to ensure that the pen refill 2 is firmly clamped without damaging it.

[0063] The working principle and operation procedure are as follows:

[0064] 1. Initial state:

[0065] The pen refill 2 is accommodated in the inner cavity of the pen barrel 1 with a gap. The pen refill drive 3 is located between the pen refill 2 and the prying operation 4. The lifting part of the pen refill drive 3 is connected to the second connecting end 422 of the fixed shaft part 42. The first clamping part 31 clamps the pen refill 2. The pen refill 2 is in a retracted state. The pen tip is located inside the pen barrel 1 and does not protrude from the pen tip opening 11.

[0066] 2. The process of breaking it open:

[0067] When the user applies a prying force to the prying core 411 of the prying operation part 41, the prying transmission end 412 transmits the torque to the first connecting end 421 of the fixed shaft part 42, causing the fixed shaft part 42 to slide axially in the inner cavity of the pen barrel 1.

[0068] The sliding of the fixed shaft part 42 drives the tip lifting part of the pen tip drive 3 to move. In the case where the tip lifting part is a disc, the rotation or axial movement of the disc will drive the first clamping part 31 to move.

[0069] The movement of the first clamping part 31 is transmitted to the pen refill 2 through the second clamping part 32. When the clamping structure of the first clamping part 31 is pushed forward, the pen refill 2 is pushed to extend towards the pen tip opening 11. When the clamping structure of the first clamping part 31 is pulled backward, the pen refill 2 retracts inside the pen barrel 1 and moves away from the pen tip opening 11.

[0070] In the specific implementation described above, the following factors are considered when selecting materials:

[0071] 1. Pen barrel 1: ABS plastic can be used, which has good processing performance, strength and toughness, can meet the structural requirements of pen barrel 1, and has a low cost.

[0072] 2. The prying operation part 41 and the fixed shaft part 42: POM or PC materials are used in some parts because they have good wear resistance and self-lubricating properties, which can reduce friction and wear and improve service life. For parts that require higher strength and rigidity, metal inserts or metal reinforcing ribs are used to ensure that the parts are not damaged during prying operations.

[0073] 3. Pen Lead Drive Component 3: Different materials are selected according to the function of different components. The clamping structure uses metal materials to ensure strength and durability; the lead lifting part and push rod can use POM or PC, which can facilitate processing and molding while ensuring a certain strength; the elastic structure can use spring steel or elastic plastic to ensure its elastic performance in long-term use.

[0074] Optionally, the pen refill drive 3 has a lifting part at one end facing the fixed shaft 42 that can be connected to the second connecting end 422. The lifting part forms the adjustable telescopic state so that the pen refill 2 moves toward or away from the pen tip opening 11.

[0075] Optionally, the end of the pen refill drive 3 facing the fixed shaft portion 42 is a rotating wheel docking structure. The rotating wheel docking structure serves as the core lifting portion and can be connected to the second connecting end 422, so that the second connecting end 422 can be rotated and thereby form an adjustable telescopic state, thereby allowing the pen refill 2 to move toward the pen tip opening 11, or away from the pen tip opening 11.

[0076] Optionally, the pen refill drive 3 is a columnar structure, and one end of the columnar structure facing the fixed shaft portion 42 has an elastic element. The second connecting end is connected to the elastic element to form the wheel docking structure.

[0077] Optionally, the pen refill drive 3 includes a first clamping part 31 and a second clamping part 32. The first clamping part 31 is connected to the fixed shaft part 42 so that when the prying operation member 4 is pried, the fixed shaft part 42 drives the first clamping part 31 to extend and retract. The second clamping part 32 is connected to the first clamping part 31 so that when the first clamping part 31 is pried, the second clamping part 32 and the pen refill 2 form a linkage cooperation so that the pen refill 2 can move toward the pen tip opening 11 or away from the pen tip opening 11.

[0078] Optionally, the first clamping part 31 includes a clamping end 311 and a clamping wire 312. The clamping end 311 is fixed to the clamping wire 312, and the clamping wire 312 is connected to the fixed shaft part 42 so that when the prying operation member 4 is pried, the fixed shaft part 42 drives the first clamping part 31 to extend or retract. Specifically, the second clamping part 32 reuses the above-mentioned lifting core part.

[0079] Optionally, the second clamping part 32 includes a first rotating wheel 321 and a second rotating wheel 322. The first rotating wheel 321 is connected to the first clamping part 31, and the first rotating wheel 321 and the second rotating wheel 322 are connected by an elastic member to compress the prying operation member. When the prying operation member is pryed, the prying driving force is transmitted to the pen tip 2 so that the pen tip 2 can move toward the pen tip opening 11 or away from the pen tip opening 11.

[0080] Specifically, in other possible embodiments, the specific implementation of the above solution may differ from the above. Figures 1-3 The specific structural forms shown are used to achieve alternative structures, as detailed below:

[0081] I. Structural Design and Manufacturing of Pen Lead Driver 3

[0082] 1. Core lifting and wheel docking structure

[0083] When the end of the pen refill drive 3 facing the fixed shaft 42 is a rotating wheel docking structure, this rotating wheel docking structure serves as the core lifting part. It can be designed as a toothed wheel with a diameter of approximately 8-10mm. The number of teeth is determined according to the required transmission ratio and torque transmission requirements, for example, 8-12 teeth. The shape of the teeth can be an involute tooth shape to ensure smooth and efficient transmission.

[0084] A center hole can be provided at the center of the rotating wheel, the diameter of which matches the outer diameter of the second connecting end 422 of the fixed shaft 42. A transition fit or a clearance fit can be used. For a transition fit, the fit tolerance is controlled at approximately ±0.05mm to ensure that torque can be transmitted during rotation without generating excessive radial clearance.

[0085] The rollers can be injection molded using high-strength engineering plastics such as polyoxymethylene (POM) or polyamide (PA) to ensure wear resistance and a certain level of strength. During the injection molding process, high-precision molds are used to ensure the shape and dimensional accuracy of the gear teeth. Alternatively, metal materials, such as aluminum alloys, can be used, manufactured through precision casting or machining processes like CNC milling, followed by surface treatments such as anodizing to improve wear resistance and aesthetics.

[0086] 2. Elastic element

[0087] The elastic element at the end of the columnar structure facing the fixed shaft 42 can be a helical spring. The outer diameter of the spring is approximately 4-6 mm. The appropriate wire diameter and number of coils are selected based on the required extension / retraction stroke and elastic force. For example, the wire diameter is 0.5-1 mm, the number of coils is 10-20, and the free height is determined according to the specific design, typically 10-20 mm. One end of the spring is connected to the second connecting end 422, and the other end can be fixed to the columnar structure by hook or embedding.

[0088] To ensure the stability and reliability of the elastic element, limiting structures can be set at both ends of the spring, such as grooves or bosses on the columnar structure, to prevent the spring from shifting or falling off during the extension and contraction process.

[0089] Springs can be manufactured using standard spring-making processes, such as spring coiling machines, allowing for precise control of spring force and dimensions. For different usage environments, springs can undergo surface treatments, such as painting or electroplating, to prevent rust.

[0090] 3. First clamping part 31 and second clamping part 32

[0091] First clamping part 31:

[0092] Clamping end 311 and clamping wire 312: Clamping end 311 can be designed as a block structure with jaws. The shape of the jaws can be designed according to the shape of the pen refill 2. For example, for common pen refills, the jaws can be designed as semi-circular with a radius of about 2-3 mm to fit the outer diameter of the pen refill 2. The main body dimensions of clamping end 311 are about 10 mm × 10 mm × 5 mm (length × width × height) to ensure sufficient strength to clamp the pen refill 2. Clamping wire 312 can be designed as a metal wire with a diameter of about 1-2 mm, such as stainless steel wire. One end is firmly fixed to clamping end 311 by welding, riveting, or embedding, and the other end is designed as a ring or hook for connection with fixed shaft part 42.

[0093] The clamping end 311 can be manufactured by injection molding or metalworking. For injection molding, ABS or PC plastic can be used; for metalworking, aluminum alloy or stainless steel can be used, manufactured through milling or casting processes, followed by precision machining of the jaws to ensure dimensional accuracy. The clamping wire 312 can be manufactured using wire processing equipment, such as a wire drawing machine, to ensure its diameter accuracy.

[0094] Second clamping part 32:

[0095] First rotating wheel 321 and second rotating wheel 322: The first rotating wheel 321 and second rotating wheel 322 can be designed as circular structures with a diameter of approximately 6-8 mm, and a shaft hole with a diameter of approximately 2-3 mm can be provided in the center of the shaft hole to connect with the first clamping part 31 via a shaft pin. The elastic component between the first rotating wheel 321 and second rotating wheel 322 can be a compression spring with an outer diameter of approximately 4-5 mm, a wire diameter of approximately 0.5-0.8 mm, and a length determined according to the distance between the first rotating wheel 321 and second rotating wheel 322, typically 5-10 mm.

[0096] To ensure that the first rotating wheel 321 and the second rotating wheel 322 can stably transmit driving force during operation, knurling or texture can be applied to their surfaces to increase friction.

[0097] The first roller 321 and the second roller 322 can be manufactured by injection molding or metalworking. For injection molding, wear-resistant plastics such as POM are used; for metalworking, brass or aluminum alloy can be used, and the parts can be machined using a lathe or milling machine. The elastic components are manufactured using standard spring manufacturing processes. The first roller 321 and the second roller 322 are then assembled together by a pin. The pin can be made of stainless steel and has a diameter of approximately 2-3 mm. An interference fit or a pin is used for fixing to ensure a secure connection.

[0098] The connection method and assembly process are as follows:

[0099] 1. Connection between the lifting core and the second connecting end 422:

[0100] When the core section has a rotating wheel docking structure, align the center hole of the rotating wheel with the second connecting end 422 and connect them by pressure assembly or key connection. For pressure assembly, a special pressing tool can be used to press the rotating wheel into the second connecting end 422 to ensure a tight fit between the two. For key connection, keyways and keys are provided at corresponding positions in the center hole of the rotating wheel and the second connecting end 422 to ensure that the two rotate synchronously during rotation.

[0101] When elastic elements are involved, one end of the elastic element is fitted onto the second connecting end 422 and fixed by a slot or other limiting structure, while the other end is embedded in the corresponding position of the columnar structure to ensure that the extension and retraction direction of the elastic element is consistent with the extension and retraction direction of the pen refill 2.

[0102] 2. Connection between the first clamping part 31 and the fixed shaft part 42:

[0103] The annular or hook-shaped portion of the clamping wire 312 can be connected to the corresponding structure of the fixed shaft portion 42 by means of a hook, a collar, or a bayonet. For example, the annular portion of the clamping wire 312 can be fitted onto the protrusion of the fixed shaft portion 42, or a bayonet structure can be used to achieve the connection between the two, ensuring that the first clamping portion 31 can move synchronously when the fixed shaft portion 42 extends or retracts.

[0104] 3. Connection between the second clamping part 32 and the first clamping part 31 and the pen refill 2:

[0105] The first rotating wheel 321 and the second rotating wheel 322 are connected to the first clamping part 31 by a pivot pin. The pivot pin may be equipped with a positioning structure to prevent the first rotating wheel 321 and the second rotating wheel 322 from sliding axially. The second rotating wheel 322 and the pen refill 2 achieve linkage through friction or a slot structure. For example, a rubber ring or a soft plastic ring is provided on the outer surface of the second rotating wheel 322 to generate sufficient friction when in contact with the pen refill 2, or a slot is provided on the pen refill 2 and a corresponding protrusion is provided on the second rotating wheel 322 to achieve linkage between the two.

[0106] The working principle and operation procedure are as follows:

[0107] 1. Initial state:

[0108] The pen refill 2 is in its initial position, with the pen tip retracted inside the pen barrel 1 and not protruding from the pen tip opening 11. The refill drive 3's lifting part is connected to the second connecting end 422 of the fixed shaft part 42. The first clamping part 31 is connected to the fixed shaft part 42 via clamping wire 312. The clamping end 311 clamps the pen refill 2, the second clamping part 32 is in an unforced state, and the elastic component between the first rotating wheel 321 and the second rotating wheel 322 is at its natural length.

[0109] 2. Actions triggered by the prying or bending operation:

[0110] When the lever 4 is levered, the fixed shaft 42 extends or retracts.

[0111] In the case where the refill part has a rotating wheel docking structure, the extension and retraction of the fixed shaft part 42 drives the rotating wheel to rotate. The rotation of the rotating wheel converts the rotational motion into linear motion, driving the refill 2 to extend and retract. For example, through the cooperation of the wheel teeth and other transmission components, the refill 2 moves towards or away from the pen tip opening 11.

[0112] In the case of a clamping part 31 and a clamping part 32, the extension and retraction of the fixed shaft part 42 drives the clamping wire 312, thereby causing the first clamping part 31 to move. The movement of the first clamping part 31 is transmitted to the second rotating wheel 322 through the elastic member between the first rotating wheel 321 and the second rotating wheel 322 of the second clamping part 32. The linkage between the second rotating wheel 322 and the pen refill 2 causes the pen refill 2 to extend and retract. For example, when the first clamping part 31 moves forward, the elastic member is compressed, pushing the second rotating wheel 322, thereby pushing the pen refill 2 to extend toward the pen tip opening 11; conversely, the pen refill 2 retracts.

[0113] Regarding material selection and performance optimization:

[0114] 1. The selection of different materials is based on the functional and performance requirements of the components. For components that bear greater stress and friction, such as clamping end 311, first rotating wheel 321 and second rotating wheel 322, metal materials are used to ensure strength and wear resistance; for components that require elasticity and cushioning, such as elastic elements and some connecting structures, spring steel or elastic plastics are used; for structural components, such as rotating wheel docking structures and columnar structures, engineering plastics are used to balance cost and ease of processing.

[0115] 2. To reduce friction and wear, lubricant, such as grease or solid lubricant, can be added to the contact surfaces of moving parts, such as between the wheel and the fixed shaft 42, and between the pin and the wheel's shaft hole. For elastic parts, materials with different elastic coefficients should be selected according to different usage environments to ensure reliability and stability during long-term use.

[0116] Optionally, the part of the actuating component 4 exposed outside the pen barrel is fitted with a rotating sleeve 5, and / or, the outer wall of the pen barrel 1 is provided with a protective sleeve 6, the protective sleeve 6 being close to the pen tip opening 11.

[0117] Specifically, the pen tip opening 11 is disposed on the pen neck 7.

[0118] This application embodiment also provides a pen retractable drive structure, which includes: a pen retractor drive member 3 and a levering operation member 4; the pen retractor drive member 3 is located between the pen retractor 2 and the levering operation member 4, and one end is clamped to the pen retractor 2, and the other end is abutted to the levering operation member 4 so that when the levering operation member 4 is levered, the fixed shaft portion 42 drives the pen retractor drive member 3 to extend and retract, thereby driving the pen retractor 2 to extend and retract.

[0119] 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 based on a prying operation, characterized in that, include: Pen barrel (1), pen refill (2), pen refill drive (3), and levering operation (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 drive (3) is located between the pen refill (2) and the levering operation (4), and one end is clamped to the pen refill (2), and the other end is abutted to the levering operation (4) so ​​that when the levering operation (4) is levered, the fixed shaft part (42) drives the pen refill drive (3) to extend and retract, and thereby drives the pen refill (2) to extend and retract.

2. The pen structure based on a prying operation according to claim 1, characterized in that, The prying operation component (4) includes a prying operation part (41) and a fixed shaft part (42). The prying operation part (41) has a prying lifting core part (411) and a prying transmission end (412). The fixed shaft part (42) has a first connecting end (421) and a second connecting end (422). The prying operation part (41) is connected to the first connecting end (421) through the prying lifting core part (411) and protrudes from the outer wall of the pen barrel (1). The prying operation part (41) is connected to the first connecting end (421) through the prying transmission end (412) to connect... Under the applied prying driving force, the prying driving force causes the fixed shaft part (42) to extend and retract and drives the pen refill drive member (3) to extend and retract; the fixed shaft part (42) is slidably accommodated in the inner cavity, and the first connecting end (421) is connected to the prying transmission end (412), and the second connecting end (422) is connected to the pen refill drive member (3) to form an adjustable extension and retraction state and thereby allow the pen refill (2) to move toward the pen tip opening (11) or away from the pen tip opening (11), thereby driving the pen refill (2) to extend and retract.

3. The pen structure based on a prying operation according to claim 2, characterized in that, The pen refill drive (3) has a lifting part at one end facing the fixed shaft (42) that can be connected to the second connecting end (422). The lifting part forms the adjustable telescopic state so that the pen refill (2) moves toward the pen tip opening (11) or away from the pen tip opening (11).

4. The pen structure based on a prying operation according to claim 3, characterized in that, The end of the pen refill drive (3) facing the fixed shaft (42) is a rotating wheel docking structure. The rotating wheel docking structure serves as the core lifting part and can be connected to the second connecting end (422) so that the second connecting end (422) can be rotated and thereby form an adjustable telescopic 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 based on a prying operation according to claim 4, characterized in that, The pen refill drive (3) is a columnar structure. One end of the columnar structure facing the fixed shaft (42) has an elastic element. The second connecting end is connected to the elastic element to form the rotating wheel docking structure.

6. The pen structure based on a prying operation according to claim 3, characterized in that, The pen refill drive (3) includes a first clamping part (31) and a second clamping part (32). The first clamping part (31) is connected to the fixed shaft part (42) so that when the prying operation part (4) is pryed, the fixed shaft part (42) drives the first clamping part (31) to extend and retract. The second clamping part (32) is connected to the first clamping part (31) so that when the first clamping part (31) is pryed, the second clamping part (32) and the pen refill (2) form a linkage cooperation so that the pen refill (2) can move toward the pen tip opening (11) or away from the pen tip opening (11).

7. A pen structure based on a prying operation according to claim 6, characterized in that, The first clamping part (31) includes a clamping end (311) and a clamping wire (312). The clamping end (311) is fixed to the clamping wire (312), and the clamping wire (312) is connected to the fixed shaft part (42) so that when the prying operation member (4) is pryed, the fixed shaft part (42) drives the first clamping part (31) to extend and retract.

8. A pen structure based on a prying operation according to claim 6, characterized in that, The second clamping part (32) includes a first rotating wheel (321) and a second rotating wheel (322). The first rotating wheel (321) is connected to the first clamping part (31). The first rotating wheel (321) and the second rotating wheel (322) are connected by an elastic member to squeeze the prying operation member. When the prying operation member is pryed, the prying driving force is transmitted to the pen tip (2) so that the pen tip (2) can move toward the pen tip opening (11) or away from the pen tip opening (11).

9. A pen structure based on a prying operation according to any one of claims 1-8, characterized in that, The prying operation element (4) is covered with a rotating sleeve (5) on the part exposed outside the pen barrel, and / or, the outer wall of the pen barrel (1) is provided with a protective sleeve (6), the protective sleeve (6) being close to the pen tip opening (11).

10. A pen refill telescopic drive structure, characterized in that, include: Pen refill drive (3) and a levering operation (4); the pen refill drive (3) is located between the pen refill (2) and the levering operation (4), and one end is clamped to the pen refill (2), and the other end is abutted to the levering operation (4) so ​​that when the levering operation (4) is levered, the fixed shaft (42) drives the pen refill drive (3) to extend and retract, and thereby drives the pen refill (2) to extend and retract.

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