Push-type writing instrument

Abstract

The utility model provides a kind of press type writing pen, including pen holder and pen core (3), the pen core (3) head and pen holder head between being equipped with press spring (6);The tail of pen holder is equipped with press component, the tail of press component head and pen core (3) are connected, and the tail of press component is connected with press cap (12);The axis of press component and the axis of the pen core (3) are not on the same straight line, and the axis of press component and the axis of the pen holder are not on the same straight line.The press type writing pen is realized by the eccentric pressing structure of individuality, can satisfy consumer differentiation needs, and generates emotional connection with user and brings emotional value.

Description

Technical Field

[0001] This utility model relates to the technical field of stationery, and more specifically to a push-button writing pen. Background Technology

[0002] Retractable writing pens have become one of the mainstream products in the stationery market due to their ease of use and the fact that they do not require frequent insertion and removal of the cap. In the existing technology, the pressing structure of retractable writing pens mostly adopts a symmetrical design, that is, the central axis of the pressing component (such as the cap) is basically coincident with the central axis of the pen barrel. The pressing component drives the internal transmission structure (such as springs, rollers, etc.) to realize the extension and resetting of the pen lead.

[0003] However, as consumers' demands for personalized and differentiated stationery increase, traditional symmetrical push-button gel pens are gradually showing limitations in terms of appearance design and user experience. On the one hand, their structural form is relatively simple and highly homogenized, making it difficult to meet the pursuit of unique appearance and personalized operation experience among young consumers. On the other hand, the existing push-button structure has weak interactivity, only achieving the basic function of refilling, lacking emotional connection with users and additional emotional value, making it difficult for the product to form a unique advantage in market competition. In addition, structural innovations in existing push-button writing pens are mostly focused on functional improvements such as refill stability and durability, with fewer breakthroughs in the push-button structure form and user interaction experience, causing the market vitality of the push-button writing pen category to gradually slow down. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a push-button writing pen that achieves personalization of appearance and operation experience through a unique eccentric pressing structure, which can meet the differentiated needs of consumers, create an emotional connection with users, and bring emotional value.

[0005] The technical solution of this utility model is to provide a push-button writing pen, including a pen barrel and a pen refill. A push-button spring is provided between the head of the pen refill and the head of the pen barrel. A push-button assembly is provided at the tail of the pen barrel. The head of the push-button assembly is connected to the tail end of the pen refill, and the tail end of the push-button assembly is connected to the push cap. The axis of the push-button assembly is not on the same straight line as the axis of the pen refill, and the axis of the push-button assembly is not on the same straight line as the axis of the pen barrel.

[0006] Compared with existing technologies, the push-button writing pen of this invention has the following advantages: In this push-button writing pen, the axis of the push-button component is not on the same straight line as the axis of the pen core and the pen barrel, forming a unique eccentric pressing structure. This design not only breaks the homogeneity limitation of traditional symmetrical pressing structures, bringing a personalized appearance and operating experience, and meeting consumers' needs for differentiated stationery, but also interacts with users through the unique structure to give the product emotional value. At the same time, the innovative structure enhances the product's competitiveness in the market.

[0007] As an improvement, a weight is provided inside the pen head, which is fitted outside the press spring. With this structure, the weight inside the pen head, fitted outside the press spring, serves to counterbalance the eccentric pressing mechanism. Because the press assembly uses an eccentric design, the pen's center of gravity shifts. The weight increases the weight at the pen head, balancing the imbalance caused by the eccentric structure, making the pen more stable during writing. This prevents instability in grip or wobbling during writing, ensuring a good writing experience while achieving the unique eccentric pressing structure.

[0008] As an improvement, the pen barrel has a refill cavity for accommodating the refill, and the tail end of the pen barrel has an inner liner cavity. The axis of the refill cavity and the axis of the inner liner cavity are not on the same straight line. An inner liner is installed inside the inner liner cavity, and the pusher component is installed inside the inner liner. The refill is accommodated in the refill cavity, and the pushing end of the pusher component abuts against the end face of the tail end of the refill. With this structure, the axes of the refill cavity and the inner liner cavity inside the pen barrel do not coincide. The inner liner and the pusher component installed in the inner liner cavity form a staggered layout with the refill inside the refill cavity, allowing the pushing end of the pusher component to accurately abut against the tail end of the refill. This unique eccentric pressing structure, achieved through axis misalignment, ensures effective pushing of the refill during eccentric pressing to complete the refill ejection. It also meets the personalized appearance design requirements of the product, enhances the differentiation from traditional ballpoint pens, and improves the product's competitiveness.

[0009] As an improvement, a limiting plane is provided on the side wall of the inner liner cavity, and the shape of the inner liner matches the shape of the inner liner cavity; a limiting protrusion is provided on the inner wall of the pen barrel, located below the inner liner cavity, and the inner liner is embedded in the inner liner cavity. The limiting plane and the limiting protrusion limit the inner liner circumferentially and axially. With this structure, the limiting plane on the side wall of the inner liner cavity matches the shape of the inner liner, and together with the limiting protrusion on the inner wall of the pen barrel located below the inner liner cavity, the inner liner can be limited circumferentially and axially respectively, effectively preventing the inner liner from rotating circumferentially or displacing axially within the cavity, ensuring the stability of the inner liner and the internal pressing assembly, and guaranteeing the accuracy and reliability of the eccentric pressing structure transmission.

[0010] As an improvement, the actuating assembly includes a rotating wheel and an actuating rod. Both the rotating wheel and the actuating rod are installed inside the liner, with the front end of the rotating wheel serving as the pushing end. A actuating gear is provided on the side wall of the rotating wheel, and multiple actuating grooves matching the teeth of the actuating gear are provided on the inner wall of the liner. The teeth of the actuating gear are correspondingly fitted into the actuating grooves. The actuating rod is mounted on the rotating wheel, and its tail end is connected to the push cap. The actuating rod can drive the rotating wheel to rotate. In the lead-out state, the groove wall of the actuating groove can position the actuating gear. With this structure, the gear-groove cooperation and the actuating rod transmission ensure the accuracy of the rotating wheel pushing the pen lead out during eccentric pressing, while the groove wall positioning ensures the stability of the lead-out state. Furthermore, the unique layout of the eccentric structure enhances the overall structural reliability.

[0011] As an improvement, the front end of the click rod is provided with a push gear. The ends of the teeth of the click gear extend towards the push gear to form a click portion. The click portion of the teeth of the click gear can mesh with the teeth of the push gear. When the teeth of the click gear leave the click groove, the click gear can rotate a certain angle under the push gear. With this structure, the precise transmission of the click rod to the rotating wheel is ensured, making the rotation of the rotating wheel under the eccentric pressing structure smoother and more controllable, and stably realizing the refill ejection action. At the same time, the reliability of the internal transmission of the click assembly is improved.

[0012] As an improvement, the lower end of the groove wall between two adjacent click slots is provided with an inclined surface, which matches the end face of the click portion of the click gear teeth. When the click gear teeth leave the click slots, the click gear rotates a certain angle under the push of the drive gear, and the inclined surface abuts against the end face of the click portion of the click gear, thus keeping the pen lead in the ejected state. With this structure, when the click gear teeth leave the click slots and rotate a certain angle under the push of the drive gear, the inclined surface abuts against the end face of the click portion, thereby firmly maintaining the ejected state of the pen lead, ensuring that the eccentrically pressed ballpoint pen can stably maintain this state after the lead is ejected, and improving reliability during use.

[0013] As an improvement, the side wall of the front end of the push rod is provided with multiple protrusions that match the push grooves. These protrusions slide in a one-to-one correspondence within the push grooves. Some push grooves have raised ribs, the radial thickness of which is less than the radial thickness of the groove wall. The protrusions in the rib-lined push grooves slide in a one-to-one correspondence with the side wall of the raised rib. With this structure, the protrusions on the front end side wall of the push rod slide in a one-to-one correspondence with the push grooves of the liner, providing guidance for the movement of the push rod and ensuring its stability when driving the rotating wheel. The radial thickness of the raised ribs in some push grooves is less than the groove wall, and the corresponding protrusions slide in a one-to-one correspondence with the side wall of the raised rib. This structural adaptation improves the accuracy of the fit between the two, ensuring smooth transmission, and reduces unnecessary contact area, thus reducing wear.

[0014] As an improvement, the number of teeth on the drive gear is greater than the number of teeth on the snap-action gear. A connecting tooth is provided on the end face of the rotating wheel, between two adjacent snap-action parts. Some of the teeth on the drive gear mesh with the snap-action parts, and some of the teeth on the drive gear mesh with the connecting tooth. This structure enhances the continuity and stability of the transmission between the drive gear and the rotating wheel, enabling more precise rotation of the snap-action gear. It ensures the smoothness and reliability of the wheel's action in pushing the pen refill out during eccentric pressing, while the multi-tooth meshing improves the load-bearing capacity of the transmission structure and extends the service life of the components.

[0015] As an improvement, the pen barrel includes an upper barrel and a lower barrel, with the weight and the press spring installed inside the lower barrel; the tail end of the lower barrel is detachably connected to the head of the upper barrel via a connector. This structure facilitates the disassembly of the pen barrel for the installation, replacement, or repair of internal components, such as replacing the pen refill or maintaining the press spring. Furthermore, by rationally allocating the component installation positions and coordinating with the overall layout of the eccentric pressing structure, the weight's counterweight effect on the eccentric structure and the normal function of the press spring are ensured. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the push-button writing pen of this utility model.

[0017] Figure 2 This is a cross-sectional view of the push-button writing pen of this utility model.

[0018] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0019] Figure 4 for Figure 2 A magnified structural diagram of part B.

[0020] Figure 5This is an exploded view of the push-button writing pen of this utility model.

[0021] Figure 6 This is an exploded view of the press component of the push-button writing pen of this utility model.

[0022] Figure 7 This is a three-dimensional structural diagram of the upper shaft of the push-button writing pen of this utility model.

[0023] Figure 8 This is a cross-sectional structural diagram of the inner lining of the push-button writing pen of this utility model.

[0024] As shown in the figure: 1. Upper rod, 101. Inner liner cavity, 102. Limiting plane, 103. Limiting protrusion ring, 2. Lower rod, 3. Pen refill, 4. Connector, 5. Pen refill cavity, 6. Pressing spring, 7. Rotating wheel, 701. Pressing gear, 702. Pressing part, 703. Connecting tooth, 8. Pressing rod, 801. Pushing gear, 802. Protrusion, 9. Inner liner, 901. Pressing groove, 902. Inclined surface, 903. Protruding rib, 10. Weight block, 11. Rear seal, 12. Press cap. Detailed Implementation

[0025] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0026] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0027] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.

[0028] like Figures 1 to 8 As shown, this utility model discloses a push-button writing pen, including a pen barrel and a pen core 3.

[0029] The pen barrel includes an upper barrel 1 and a lower barrel 2. The tail end of the lower barrel 2 is detachably connected to the head of the upper barrel 1 via a connector 4. The lower end of the connector 4 is tightly fitted inside the tail end of the lower barrel 2, and the upper end of the connector 4 has an external thread. The inner wall of the head of the upper barrel 1 has an internal thread, and the head of the upper barrel 1 is threaded onto the upper end of the connector 4. The pen refill 3 is installed in the pen refill cavity 5 formed by the upper barrel 1 and the lower barrel 2. A snap-action spring 6 is provided between the head of the pen refill 3 and the head of the pen barrel, that is, the snap-action spring 6 is installed inside the lower barrel 2.

[0030] The upper rod 1 has a click assembly at its tail end, which includes a rotating wheel 7 and a click rod 8. The upper rod 1 also has an inner liner cavity 101 at its tail end, and the axis of the pen refill cavity 5 is not collinear with the axis of the inner liner cavity 101. An inner liner 9 is installed inside the inner liner cavity 101, and a limiting plane 102 is provided on the side wall of the inner liner cavity 101. The shape of the inner liner 9 matches the shape of the inner liner cavity 101. A limiting protrusion ring 102 is provided on the inner wall of the pen barrel, located below the inner liner cavity 101. The inner liner 9 is embedded within the inner liner cavity 101, and the limiting plane 102 and the limiting protrusion ring 102 provide circumferential and axial limiting for the inner liner 9.

[0031] The lower rod 2 has a weight 10 inside, which is fitted around the snap spring 6. The weight 10 is located inside the connector 4, and the connector 4 provides a limiting function for the weight 10. The upper rod 1 has a rear seal 11 embedded in its tail end, which limits the movement of the inner liner 9.

[0032] Both the rotating wheel 7 and the push rod 8 are installed inside the inner liner 9. The side wall of the rotating wheel 7 is provided with a push gear 701, and the inner wall of the inner liner 9 is provided with a plurality of push grooves 901 that match the teeth of the push gear 701. The teeth of the push gear 701 are fitted one-to-one into the push grooves 901.

[0033] The push rod 8 is mounted on the rotating wheel 7. The front end of the push rod 8 is provided with a push gear 801. The ends of the teeth of the push gear 801 extend towards the push gear 801 to form a push portion 702, which can mesh with the teeth of the push gear 801. The number of teeth of the push gear 801 is greater than the number of teeth of the push gear 701. A connecting tooth 703 is provided on the end face of the rotating wheel 7, between two adjacent push portions 702. Part of the teeth of the push gear 801 meshes with the push portion 702, and part of the teeth of the push gear 801 meshes with the connecting tooth 703. The front end of the rotating wheel 7 is the push end, which abuts against the end face of the tail end of the pen refill 3.

[0034] The lower end of the groove wall between two adjacent snap grooves 901 is provided with an inclined surface 902, which matches the end face of the snap part 702 of the snap gear 701. When the tooth of the snap gear 701 leaves the snap groove 901, the snap gear 701 is pushed by the push gear 801 and rotates by a certain angle. Then the inclined surface 902 abuts against the end face of the snap part 702 of the snap gear 701, so that the pen lead 3 is kept in the lead-out state.

[0035] The end of the push rod 8 is fitted with the push cap 12, and the end of the push cap 12 passes through the rear seal 11 and protrudes outside the end of the upper rod 1.

[0036] The front end of the push rod 8 has a plurality of protrusions 802 on its side wall that match the push groove 901. The protrusions 802 are slidably fitted in the push groove 901 in a one-to-one correspondence. A portion of the push groove 901 has a rib 903. The radial thickness of the rib 903 is less than the radial thickness of the groove wall of the push groove 901. The protrusions 802 fitted in the push groove 901 with the rib 903 are slidably fitted with the side wall of the rib 903.

[0037] The working principle of this invention's push-button writing pen is as follows: Pressing the cap 12 exposed outside the tail end of the upper rod 1 drives the push rod 8 to move downwards; the pushing gear 801 at the front end of the push rod 8 meshes with the push part 702 and connecting teeth 703 of the rotating wheel 7, first pushing the teeth of the push gear 701 of the rotating wheel 7 to disengage from the push groove 901 on the inner wall of the inner liner 9, and then driving the rotating wheel 7 to rotate under the continuous action of the pushing gear 801; after the rotating wheel 7 rotates to a certain angle, the lower inclined surface 902 of the groove wall between adjacent push grooves 901 abuts against the end face of the push part 702, keeping the pen core 3 in the lead-out state; the protrusion 802 at the front end of the push rod 8 slides in cooperation with the push groove 901 (including the protrusion 802 and the side wall of the rib 903 at the rib 903), providing stable guidance for the whole process.

[0038] The core advantage of this push-button writing pen lies in its eccentric pressing structure, formed by the misalignment of the leads cavity 5 and the inner liner cavity 101. This breaks through the homogeneity limitations of traditional symmetrical pressing, resulting in a unique appearance and tactile feel. It meets consumers' needs for personalized stationery, enhancing product recognition and market competitiveness. The eccentric structure, combined with the weight block 10's balancing effect on the center of gravity, retains the unique interactive experience of eccentric pressing while ensuring stability during writing, preventing structural misalignment from affecting usability. At the same time, the internal transmission design driven by the eccentric layout (such as the meshing of the drive gear 801 and the snap-action part 702, and the guidance of the protrusion 802 and the snap-action groove 901) ensures the accuracy and reliability of the lead ejection action while achieving differentiated functions, enabling the product to provide emotional value and interactivity while also possessing practical performance.

[0039] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.

Claims

1. A push-button writing pen, comprising a pen barrel and a pen core (3), wherein a push-button spring (6) is provided between the head of the pen core (3) and the head of the pen barrel; a push-button assembly is provided at the tail of the pen barrel, wherein the head of the push-button assembly is connected to the tail end of the pen core (3), and the tail end of the push-button assembly is connected to a push cap (12); characterized in that: The axis of the press assembly is not on the same straight line as the axis of the pen refill (3), and the axis of the press assembly is not on the same straight line as the axis of the pen barrel.

2. The push-button writing pen according to claim 1, characterized in that: The pen barrel has a weight (10) inside the head, and the weight (10) is fitted outside the snap spring (6).

3. The push-button writing pen according to claim 1, characterized in that: The pen barrel has a pen core cavity (5) for accommodating the pen core (3), and the pen barrel has an inner liner cavity (101) at the tail end. The axis of the pen core cavity (5) and the axis of the inner liner cavity (101) are not on the same straight line. An inner liner (9) is installed in the inner liner cavity (101), and the push assembly is installed in the inner liner (9). The pen core (3) is accommodated in the pen core cavity (5), and the push end of the push assembly abuts against the end face of the tail end of the pen core (3).

4. The push-button writing pen according to claim 3, characterized in that: The inner lining cavity (101) has a limiting plane (102) on its side wall, and the shape of the inner lining (9) matches the shape of the inner lining cavity (101). The inner wall of the pen barrel and the lower side of the inner lining cavity (101) have a limiting protrusion ring (103). The inner lining (9) is embedded in the inner lining cavity (101), and the limiting plane (102) and the limiting protrusion ring (103) limit the inner lining (9) in the circumferential and axial directions.

5. The push-button writing pen according to claim 3, characterized in that: The push assembly includes a rotating wheel (7) and a push rod (8). Both the rotating wheel (7) and the push rod (8) are installed inside the liner (9). The front end of the rotating wheel (7) is the push end. A push gear (701) is provided on the side wall of the rotating wheel (7). A plurality of push grooves (901) that match the teeth of the push gear (701) are provided on the inner wall of the liner (9). The teeth of the push gear (701) are fitted one-to-one into the push groove (901); the push rod (8) is mounted on the rotating wheel (7), and the tail end of the push rod (8) is connected to the push cap (12); the push rod (8) can drive the rotating wheel (7) to rotate, and in the core-out state, the groove wall of the push groove (901) can position the push gear (701).

6. The push-button writing pen according to claim 5, characterized in that: The front end of the push rod (8) is provided with a push gear (801). The end of the teeth of the push gear (701) extends toward the push gear (801) to form a push part (702). The push part (702) of the teeth of the push gear (701) can mesh with the teeth of the push gear (801). When the teeth of the push gear (701) leave the push groove (901), the push gear (701) can rotate a certain angle by being pushed by the push gear (801).

7. The push-button writing pen according to claim 6, characterized in that: The lower end of the groove wall between two adjacent snap grooves (901) is provided with an inclined surface (902), which matches the end face of the snap part (702) of the snap gear (701). When the tooth of the snap gear (701) leaves the snap groove (901), the snap gear (701) is pushed by the push gear (801) and rotates at a certain angle. Then the inclined surface (902) abuts against the end face of the snap part (702) of the snap gear (701) so that the pen lead (3) is kept in the lead-out state.

8. The push-button writing pen according to claim 7, characterized in that: The front end of the push rod (8) is provided with a plurality of protrusions (802) that match the push groove (901). The protrusions (802) are slidably fitted in the push groove (901) one by one. A portion of the push groove (901) is provided with a rib (903). The radial thickness of the rib (903) is less than the radial thickness of the groove wall of the push groove (901). The protrusions (802) fitted in the push groove (901) with the rib (903) are slidably fitted with the side wall of the rib (903).

9. The push-button writing pen according to claim 8, characterized in that: The number of teeth of the push gear (801) is greater than the number of teeth of the snap gear (701). A connecting tooth (703) is provided on the tail end face of the rotating wheel (7) and between two adjacent snap parts (702). Some of the teeth of the push gear (801) mesh with the snap part (702), and some of the teeth of the push gear (801) mesh with the connecting tooth (703).

10. The push-button writing pen according to claim 2, characterized in that: The pen barrel includes an upper rod (1) and a lower rod (2), and the weight (10) and the spring (6) are installed inside the lower rod (2); the tail end of the lower rod (2) is detachably connected to the head of the upper rod (1) by a connector (4).

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