Writing pen
By introducing a push-up mechanism and a reset mechanism into the writing pen, and through the cooperation of the limiting part and the pen barrel, a tight connection between the ink sac and the puncture part is achieved, solving the problem of inconvenient ink sac replacement and improving the stability and user experience of the writing pen.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI M&G STATIONERY INC
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-24
AI Technical Summary
The existing ink cartridges are inconvenient to replace, which may lead to poor ink supply or damage to the puncture point, affecting writing performance and lifespan.
A writing instrument is designed, including top and bottom writing components, a pen barrel, an ink filling component, a push mechanism, and a reset mechanism. The push mechanism is connected to the ink sac through a push mechanism, which has a push position and a reset position. The push mechanism cooperates with the pen barrel through a limiting part to ensure a tight connection between the ink sac and the puncture part.
It improves the ease of ink cartridge replacement, reduces the risk of ink cartridge separation from the puncture site, reduces ink leakage and abnormal noise, and enhances the user experience and the stability and lifespan of the ink filling components.
Smart Images
Figure CN224545587U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stationery, and more specifically, to a writing pen. Background Technology
[0002] Writing pens, as a common office and study tool, come in a wide variety of types. Taking fountain pens as an example, current fountain pens consist of a writing component and an ink cartridge, which is generally replaceable. When the ink in the cartridge runs out, a new cartridge can be attached to the writing component so that the user can continue writing. Replaceable ink cartridges are small in size, easy to carry, and take up less space. In addition, the ink cartridge is sealed before being attached to the writing component, so unless it is damaged by external force, ink leakage is almost impossible, making it safer.
[0003] Nevertheless, existing ink cartridges still present certain inconveniences during replacement. For example, the cartridge typically requires considerable pressure to engage with the puncture point on the writing component for installation. Users often need to press firmly on the cartridge; insufficient force may result in the cartridge not being effectively punctured, affecting ink supply and rendering the pen unusable. Furthermore, if the pressing direction is not aligned with the axis of the puncture point during replacement, torque may be generated, potentially damaging the puncture point and rendering the pen unusable. Utility Model Content
[0004] A primary objective of this application is to overcome at least one of the deficiencies of the prior art described above and to provide a writing pen. This writing pen can improve the ease of ink cartridge replacement, thereby enhancing the user experience.
[0005] To achieve the above-mentioned objectives, this application adopts the following technical solution:
[0006] According to one aspect of this application, a writing pen includes: a writing component, a pen barrel, and an inking component.
[0007] The writing component includes a puncture portion for puncturing the ink sac;
[0008] The pen barrel is detachably connected to the writing component, and the pen barrel is used to house the ink sac.
[0009] An ink filling assembly is movably disposed on the pen barrel. The ink filling assembly includes a pushing mechanism and a resetting mechanism. The pushing mechanism can push and cooperate with the ink sac. The pushing mechanism includes a first limiting part, and a first mating part is disposed in the cavity of the pen barrel. The pushing mechanism has a pushing position and a resetting position. When the pushing mechanism is in the pushing position, the pushing mechanism pushes the ink sac so that the puncture part communicates with the ink sac, and the first limiting part and the first mating part limit and cooperate to keep the pushing mechanism in the pushing position. The resetting mechanism is used to disengage the first limiting part from the first mating part and move the pushing mechanism from the pushing position to the resetting position.
[0010] According to one embodiment of this application, the first mating part includes a first surface facing the writing component and a second surface facing away from the writing component. When the pushing mechanism is in the pushing position, the first surface stops and engages with the first limiting part.
[0011] The reset mechanism includes a first elastic element and a reset driving element. The reset driving element is used to disengage the first limiting portion from the first surface. The first elastic element is disposed between the second surface and the pushing mechanism so that the pushing mechanism can be moved to the reset position under the action of the reset force.
[0012] According to one embodiment of this application, the first limiting part includes a first hook, the first hook includes a first elastic arm and a first hook portion, and when the pushing mechanism is in the pushing position, the first surface and the first hook portion stop and cooperate;
[0013] The reset drive includes a reset rod and a second elastic element. The reset rod is movably disposed on the pushing mechanism, and the second elastic element is disposed between the reset rod and the pushing mechanism. The reset rod includes a drive part, and a second mating part is provided on the first hook.
[0014] The reset rod has a first station extending out of the push mechanism and a second station retracted into the push mechanism. The driving part is used to drive the second cooperating part when the reset rod moves from the second station to the first station, so that the second cooperating part drives the first hook part to disengage from the first surface.
[0015] The second elastic element keeps the reset rod in the first position under the action of the reset force.
[0016] According to one embodiment of this application, when the pushing mechanism is in the pushing position, the pushing mechanism pushes the ink sac, and the ink sac acts on the reset rod to compress the second elastic member, so that the reset rod is held in the second working position.
[0017] According to one embodiment of this application, the driving part includes a pushing surface facing the second mating part;
[0018] The second mating part is provided with a first guide slope that mates with the push surface; the first guide slope gradually slopes toward the inner wall of the pen barrel in the direction from the push assembly to the writing assembly;
[0019] When the reset rod is in the first working position, the push surface pushes against the first guide slope, so that the second mating part drives the first hook part to disengage from the first surface.
[0020] According to one embodiment of this application, the pushing mechanism includes a pressure cap and a connecting sleeve. The pressure cap is fixedly connected to the first end of the connecting sleeve and extends through the pen barrel. The first limiting part is disposed on the connecting sleeve. The outer wall of the connecting sleeve is provided with a first limiting surface, and the inner wall of the connecting sleeve is provided with a second limiting surface.
[0021] The two ends of the first elastic element abut against the first limiting surface and the second surface, respectively;
[0022] The reset rod is movably disposed on the connecting sleeve. The outer wall of the reset rod is provided with a third limiting surface. The two ends of the second elastic member abut against the pressure cap and the reset rod respectively. When the reset rod is in the second working position, the second elastic member pushes the reset rod so that the third limiting surface abuts against the second limiting surface.
[0023] According to one embodiment of this application, the connecting sleeve further includes a second limiting part. When the pushing mechanism is in the reset position, the second limiting part cooperates with the first surface stop to keep the pushing mechanism in the reset position.
[0024] According to one embodiment of this application, the second limiting part includes a second hook, the second hook includes a second elastic arm and a second hook portion, and when the pushing mechanism is in the reset position, the first surface and the second hook portion stop and cooperate.
[0025] According to one embodiment of this application, the driving part extends through the pushing assembly. The driving part includes a first rib and a second rib. The first rib is disposed on the outer wall of the reset rod, and the second rib is disposed at an angle to the first rib. The surface of the second rib facing the outer wall of the reset rod forms the pushing surface.
[0026] According to one embodiment of this application, a clearance recess is provided on the outer wall of the reset rod, the clearance recess is opposite to the drive part, and the clearance recess is used to provide clearance space for the first hook part when the first hook part is disengaged from the first surface.
[0027] According to one embodiment of this application, the writing component further includes a cylinder, a pen tip, and a water reservoir. The water reservoir is disposed inside the cylinder, the pen tip is disposed at a first end of the water reservoir and exposed outside the cylinder, and the puncture portion is disposed at a second end of the water reservoir.
[0028] According to one embodiment of this application, the writing component further includes an ink sac, the ink sac including a casing and ink disposed within the casing, and the puncture portion is detachably connected to the casing.
[0029] An embodiment of the above application has at least the following advantages or beneficial effects:
[0030] The writing pen of this application is equipped with an ink filling component, which includes a pushing mechanism and a resetting mechanism. The pushing mechanism has a pushing position and a resetting position. When assembling the ink cartridge, the user can first separate the pen barrel from the writing component, then insert the ink cartridge into the pen barrel, and tighten the pen barrel and writing component. At this time, the ink cartridge is pre-assembled between the puncture part and the ink filling component. Next, the user can hold the pen barrel and push the pushing mechanism, which moves to the pushing position under the action of external force. At this time, the ink cartridge is connected to the puncture part by the pushing action of the pushing mechanism. At the same time, when the pushing mechanism is in the pushing position, the first limiting part on the pushing mechanism can engage with the first mating part on the barrel to keep the pushing mechanism in the pushing position. This design reduces the possibility of the ink cartridge shaking during use, making the connection between the ink cartridge and the puncture part tighter. On the one hand, it reduces the risk of the ink cartridge separating from the puncture part during writing, thereby reducing the risk of ink leakage. On the other hand, it also reduces the possibility of abnormal noise caused by the ink cartridge touching the pen barrel during writing, improving the user experience. Meanwhile, the fact that the push mechanism remains in the push position after the ink cartridge is assembled also improves the stability of the push mechanism, prevents the user from moving the push mechanism repeatedly, and reduces the stability of the cooperation between the push mechanism and the reset mechanism, thereby ensuring the service life of the ink filling assembly.
[0031] When the user needs to replace the ink cartridge, they rotate the pen barrel to separate it from the writing component and remove the ink cartridge. At this time, the reset mechanism can cause the first limiting part on the push mechanism to disengage from the first mating part, so that the first limiting part and the first mating part lose their limiting engagement, thereby allowing the push mechanism to move from the push position to the reset position for the next ink cartridge reassembly. Attached Figure Description
[0032] The various objectives, features, and advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of this application and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts.
[0033] Figure 1a This is a three-dimensional structural diagram of an embodiment of the writing pen of this application, wherein, Figure 1a This shows the state when the jacking mechanism is in the reset position and the reset mechanism is in the first working position;
[0034] Figure 1b yes Figure 1a A cross-sectional view of the writing pen along the first plane; wherein, Figure 1b This shows the state when the jacking mechanism is in the reset position and the reset mechanism is in the first working position;
[0035] Figure 1c yes Figure 1b An enlarged structural diagram of point A of the writing pen;
[0036] Figure 1d yes Figure 1a A cross-sectional view of the writing pen along the second plane; wherein, Figure 1d This shows the state when the jacking mechanism is in the reset position and the reset mechanism is in the first working position;
[0037] Figure 1e yes Figure 1d A magnified structural diagram at point B;
[0038] Figure 2a yes Figure 1a A structural diagram illustrating another state of pen use in writing, wherein... Figure 2a The diagram shows the state when the jacking mechanism is in the jacking position and the reset mechanism is in the second position.
[0039] Figure 2b yes Figure 2a A magnified structural diagram at point C;
[0040] Figure 2c yes Figure 2a A cross-sectional view of the writing pen along the second plane; wherein, Figure 2c The diagram shows the state when the jacking mechanism is in the jacking position and the reset mechanism is in the second position.
[0041] Figure 2d yes Figure 2c A magnified structural diagram at point D;
[0042] Figure 3 yes Figure 1a A structural diagram illustrating another state of pen use in writing, in which... Figure 3 The state of the push-up structure and reset mechanism after the ink cartridge is disassembled is shown;
[0043] Figure 4 yes Figure 1aA three-dimensional structural diagram of the connecting sleeve of a writing pen;
[0044] Figure 5 yes Figure 1a A three-dimensional structural diagram of the reset lever of a writing pen.
[0045] The annotations in the attached figures are explained as follows:
[0046] 100. Writing component; 110. Pen body; 120. Nib; 130. Water reservoir; 140. Puncture point;
[0047] 200. Pen barrel; 210. Barrel body; 220. First mating part; 221. First surface; 222. Second surface;
[0048] 300. Pushing mechanism; 310. Pressure cap; 320. Connecting sleeve; 321. Connecting sleeve body; 3211. First limiting surface; 3212. Second limiting surface; 3213. First opening; 3214. Second opening; 322. First limiting part; 3221. First elastic arm; 3222. First hook part; 323. Second limiting part; 3231. Second elastic arm; 3232. Second hook part; 324. Second mating part; 3241. First guide slope;
[0049] 400. Reset mechanism; 410. First elastic element; 420. Reset rod; 421. Reset rod body; 4211. Third limiting surface; 4212. Fourth limiting surface; 4213. Clearance recess; 422. Drive unit; 4221. First rib; 4222. Second rib; 42221. Pushing surface; 430. Second elastic element;
[0050] 500, Ink cartridge;
[0051] S1: First plane; S2: Second plane;
[0052] D1, First Direction; D2, Second Direction; D3, Third Direction; Detailed Implementation
[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.
[0054] The features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0055] This application uses a fountain pen as an example to illustrate the specific structure of a writing pen. Of course, the structure of this application can be applied not only to fountain pens, but also to other pens with replaceable ink cartridges, such as carbon pens and erasable pens.
[0056] The following describes an embodiment of the writing pen of this application with reference to the accompanying drawings. For ease of explanation, the length direction of the writing pen is defined as the first direction D1, the second direction D2 is defined as the direction perpendicular to the first direction, and the third direction D3 is defined as the direction that is perpendicular to both the first and second directions.
[0057] Figure 1a This is a three-dimensional structural diagram of an embodiment of the writing pen of this application, wherein, Figure 1a The diagram shows the state when the jacking mechanism is in the reset position and the reset mechanism is in the first working position.
[0058] like Figure 1a As shown, the writing pen in this embodiment includes: a writing component 100, a pen barrel 200, and an ink filling component.
[0059] Figure 1b yes Figure 1a A cross-sectional view of the writing pen along the first plane S1; wherein the first plane S1 is a plane passing through the center line of the pen barrel and the center line of the second limiting part 323. Figure 1b This shows the state when the pushing mechanism is in the reset position and the reset mechanism is in the first working position. For example... Figure 1bAs shown, the writing assembly 100 can form a passage for ink flow. The writing assembly 100 includes a cylinder 110, a pen tip 120, a reservoir 130, and a puncture part 140. The reservoir 130 is disposed inside the cylinder 110 and fixedly connected to the cylinder 110. The reservoir 130 has a first end and a second end disposed opposite each other along the length direction (first direction D1) of the writing pen. The pen tip 120 is disposed at the first end of the reservoir 130 and protrudes from the cylinder 110. The puncture part 140 is disposed at the second end of the reservoir 130 and is used to puncture the ink sac 500. When the puncture part 140 is connected to the ink sac 500, the ink in the ink sac 500 can be introduced into the reservoir 130 along the puncture part 140, and then introduced into the pen tip 120 by the reservoir 130, so that the pen tip 120 can write.
[0060] like Figure 1a As shown, the pen barrel 200 is used to accommodate the ink cartridge 500. Specifically, the pen barrel 200 can be a cylindrical structure with an internal cavity for accommodating the ink cartridge 500. The pen barrel 200 is detachably connected to the writing assembly 100. In some embodiments, the cylindrical body 110 of the writing assembly 100 may have an external thread, and the end of the pen barrel 200 may have an internal thread, achieving a detachable connection between the pen barrel 200 and the writing assembly 100 through the rotational engagement of the external and internal threads.
[0061] The ink filling component is movably disposed on the pen barrel 200. Specifically, the pen barrel 200 has a first end and a second end disposed opposite to each other in a first direction D1. The first end of the pen barrel 200 is detachably connected to the writing component 100, and the ink filling component is movably disposed on the second end of the pen barrel 200.
[0062] The ink filling assembly includes a push mechanism 300 and a reset mechanism 400. The push mechanism 300 can be pushed and cooperated with the ink sac 500. The push mechanism 300 includes a first limiting part 322. A first mating part 220 is provided in the cavity of the pen barrel 200. The push mechanism 300 has a push position and a reset position.
[0063] Figure 2a This illustrates the state when the jacking mechanism is in the jacking position and the reset mechanism is in the second position. (Example:) Figure 2a As shown, when the pushing mechanism 300 is in the pushing position, it pushes the ink sac 500 so that the puncture part 140 communicates with the ink sac 500, and the first limiting part 322 engages with the first mating part 220 to keep the pushing mechanism 300 in the pushing position. The reset mechanism 400 is used to disengage the first limiting part 322 from the first mating part 220 and move the pushing mechanism 300 from the pushing position to the reset position.
[0064] Furthermore, the user assembly of the ink cartridge 500 may include a pre-installation process and a push-to-installation process. During the pre-installation process, the user can twist the pen barrel 200 to separate it from the writing component 100, then insert the ink cartridge 500 into the pen barrel 200 and screw it into the writing component 100. At this point, the ink cartridge 500 is pre-assembled between the puncture portion 140 and the ink filling component. Figure 1a (As shown).
[0065] Next, the ink cartridge can be installed by pushing it. The user can hold the lever 210 and push the push mechanism 300. Under the action of external force, the push mechanism 300 can move along the first direction D1 toward the pen tip 120 until it moves to the push position. Figure 2a (As shown). At this time, the ink sac 500 is pushed closer to the puncture part 140 by the pushing mechanism 300. The puncture part 140 punctures the ink sac 500 and connects with it, completing the assembly of the ink sac 500. Simultaneously, the first limiting part 322 on the pushing mechanism 300 engages with the first mating part 220 on the rod 210 to keep the pushing mechanism 300 in the pushing position. That is to say, after the ink sac 500 is assembled, the pushing mechanism 300 remains in the pushing position and exerts a pushing effect on the ink sac 500. This design reduces the possibility of the ink sac 500 shaking during use, making the connection between the ink sac 500 and the puncture part 140 tighter. On the one hand, it reduces the risk of the ink sac separating from the puncture part 140 during writing, thus reducing the risk of ink leakage. On the other hand, it also reduces the possibility of the ink sac 500 making noise when it touches the pen barrel 200 during writing, improving the user experience. Meanwhile, the fact that the push mechanism 300 is always in the push position after the ink cartridge 500 is assembled can also improve the stability of the push mechanism 300, prevent the user from moving the push mechanism 300 repeatedly, reduce the stability of the cooperation between the push mechanism 300 and the reset mechanism 400, and thus ensure the service life of the ink filling component.
[0066] like Figure 3 As shown, Figure 3 The diagram illustrates the state of the push-up mechanism and the reset mechanism when the ink cartridge is removed. Specifically, when the ink cartridge is removed, the push-up mechanism is in the reset position, and the reset mechanism is in its first working position. When the user needs to replace the ink cartridge, they rotate the pen barrel to separate it from the writing component and remove the ink cartridge. At this time, as... Figure 3 As shown, when the push mechanism 300 loses its push engagement with the ink sac 500, the reset mechanism 400 can drive the first limiting part 322 on the push mechanism to disengage from the first engaging part 220, so that the first limiting part 322 and the first engaging part 220 lose their limiting engagement, thereby enabling the push mechanism 300 to move from the push position to the reset position.
[0067] Compared to the traditional assembly method of squeezing the ink sac 500 towards the puncture part 140, this application provides a new assembly method for the ink sac 500, which includes two steps: a pre-installation process for the ink sac 500 and a push-up installation process for the ink sac 500.
[0068] The pre-installation process of ink sac 500 can ensure the coaxiality of ink sac 500 and puncture part 140, reduce the possibility of torque between ink sac 500 and puncture part 140, and thus reduce the risk of puncture part 140 being damaged.
[0069] During the push-to-installation of the ink cartridge 500, the user can hold the lever 210 and push the push mechanism 300. Since the lever 210 has a larger diameter than the ink cartridge 500, it is easier for the user to apply force. At the same time, the installation method of smashing the push mechanism 300 against a fixed object requires less installation skill, making it easier for users, especially children, to replace the ink cartridge 500.
[0070] It should be noted that, in the embodiments of this application, the writing pen may include a writing structure, a shaft 210, an ink filling structure, and an ink sac 500. Specifically, the ink sac 500 may include a casing and ink disposed within the casing, and the puncture portion 140 is detachably connected to the casing to allow for replacement of the ink sac 500.
[0071] Of course, in other embodiments, the writing pen may not include the ink cartridge 500, which can be purchased separately by the user as a replaceable and consumable part.
[0072] Figure 2b yes Figure 2a A magnified structural diagram at point C; Figure 2c yes Figure 2a A cross-sectional view of the writing pen along the second plane S2; wherein, Figure 2c This illustrates the state when the pushing mechanism is in the pushing position and the reset mechanism is in the second position. The second plane S2 passes through the center line of the pen barrel 200 and the center line of the second mating part 324 simultaneously. Figure 2b and Figure 2c As shown, in one embodiment of this application, the first mating part 220 is an annular limiting boss provided in the cavity of the pen barrel 200.
[0073] Specifically, Figure 2d yes Figure 2c An enlarged structural diagram at point D, as shown below. Figure 2dAs shown, the annular limiting boss includes a first surface 221 and a second surface 222 disposed opposite to each other in a first direction D1. The first surface 221 faces the writing assembly 100, and the second surface 222 faces away from the writing assembly 100. When the pushing mechanism 300 is in the pushing position, the first surface 221 can engage with the first limiting portion 322. The reset mechanism includes a first elastic member 410 and a reset driving member. The reset driving member is used to disengage the first limiting portion 322 from the first surface 221. The first elastic member 410 is disposed between the second surface 222 and the pushing mechanism to move the pushing mechanism to the reset position under the action of a reset force.
[0074] Specifically, Figure 1d yes Figure 1a A cross-sectional view of the writing pen along the second plane; wherein, Figure 1d This shows the state when the jacking mechanism is in the reset position and the reset mechanism is in the first working position; Figure 1e yes Figure 1d A magnified structural diagram at point B. Figure 1d and Figure 1e As shown, before the ink cartridge 500 is assembled and when the ink cartridge 500 is in a pre-installed state, the pushing mechanism 300 is held in the reset position by the reset force of the first elastic member 410. At this time, the first limiting part 322 does not form a stop engagement with the first surface 221, the ink cartridge 500 is not punctured, and ink does not flow into the writing component 100.
[0075] During the installation of the ink cartridge 500 via push-pull method, please refer to the instructions provided. Figures 1e to 2b During the process, the user applies pressure to the push mechanism 300. This pressure overcomes the restoring force of the first elastic element 410, causing the push mechanism 300 to move towards the writing component 100. The push mechanism 300 pushes the ink sac 500 until it contacts and connects with the puncture part 140. Simultaneously, during the user's pressure on the push mechanism 300, the first limiting part 322 engages with the stop on the first surface 221 to form a mechanical lock, preventing rebound and ensuring that the push mechanism 300 remains in the push position (e.g., ...). Figure 2b (As shown).
[0076] When a user needs to replace the ink cartridge 500, such as Figure 1d As shown, the pen barrel can be rotated counterclockwise, at which point the ink cartridge 500 loses its reaction force on the push mechanism 300. The reset drive can drive the first limiting part 322 to move, causing the first limiting part 322 to disengage from the first surface 221. Once the limiting is released, the first elastic member 410 releases energy, pushing the push mechanism 300 from the push position back to the reset position, so that the user can assemble the ink cartridge 500 next time.
[0077] Furthermore, such as Figure 2dAs shown, in one embodiment of this application, the first limiting part 322 includes a first hook, which includes a first elastic arm 3221 and a first hook portion 3222. When the pushing mechanism 300 is in the pushing position, the first surface 221 and the first hook portion 3222 engage in a stop engagement. A second engaging part 324 is provided on the first hook, and the reset drive member can move by pulling the second engaging part 324 to disengage the first hook portion 3222 from the first surface 221.
[0078] like Figure 2c As shown, the reset drive includes a reset rod 420 and a second elastic member 430. The reset rod 420 is movably disposed on the pushing mechanism 300, and the second elastic member 430 is disposed between the reset rod 420 and the connecting sleeve 320 of the pushing mechanism 300. Figure 2d As shown, the reset rod 420 includes a drive part 422, and a second engaging part 324 is provided on the first hook. The reset rod 420 has a first position extending out of the push mechanism 300 and a second position retracted into the push mechanism 300. The drive part 422 is used to drive the second engaging part 324 when the reset rod 420 moves from the second position to the first position, so that the second engaging part 324 drives the first hook part 3222 to disengage from the first surface 221. The second elastic member 430 keeps the reset rod 420 in the first position under the action of the reset force.
[0079] Specifically, such as Figure 1d and Figure 1e As shown, when the ink cartridge 500 is in the pre-installed state, the push mechanism 300 is in the reset position. The reset rod 420 extends out of the push mechanism 300 under the pushing action of the second elastic element 430 and remains in the first position. At this time, the drive part 422 on the reset rod 420 is engaged with the second mating part 324 on the first hook. That is, the drive part 422 forms a stopping force on the second mating part 324. At this time, the stopping force opposes the reset force of the first elastic arm 3221, causing the first elastic arm 3221 to accumulate elastic potential energy. At the same time, the first hook part 3222 retracts towards the center line of the writing pen.
[0080] During the user's installation of the ink cartridge 500, the user pushes the pushing mechanism 300, and the reset rod 420 moves forward with the pushing mechanism 300. The ink cartridge 500 applies a counterforce to the reset rod 420, gradually pushing the reset rod 420 towards the first position. The distance between the pushing end of the pushing mechanism 300 and the pushing end of the reset rod 420 gradually decreases. When the pushing mechanism 300 moves to the pushing position, as... Figure 2b , Figure 2c and Figure 2dAs shown, the reset rod 420 moves to the second position under the reaction force of the ink sac 500. The pushing end of the pushing mechanism 300 is flush with the pushing end of the reset rod 420, and the reset rod 420 is located inside the pushing mechanism 300. During this process, the driving part 422 on the reset rod 420 gradually loses its stop on the second mating part 324, and the first hook is exposed on the driving part 422. The locking action of the first hook is restored, so that when the pushing mechanism 300 moves to the pushing position, the first hook part 3222 of the first hook can hook onto the first surface 221.
[0081] When the user disassembles the ink cartridge 500, the user rotates the pen barrel counterclockwise. The reaction force of the ink cartridge 500 on the reset rod 420 weakens until it disappears. Under the action of the second elastic element 430, the reset rod 420 can gradually move towards the second working position. During this process, the driving part 422 of the reset rod 420 gradually approaches the second mating part 324 on the first hook and contacts the second mating part 324, driving the first elastic rod to retract inward, realizing the disengagement of the first hook 3222 from the first surface 221. After the first hook 3222 is disengaged from the first surface 221, it returns to the reset position under the action of the first elastic element 410 (e.g., Figure 1e (As shown), this facilitates the reassembly of ink cartridge 500.
[0082] Specifically, such as Figure 2d As shown, in one embodiment of this application, the driving part 422 includes a pushing surface 42221 facing the second mating part 324. The second mating part 324 is provided with a first guide slope 3241 that is mated with the pushing surface 42221. The first guide slope 3241 gradually slopes toward the inner wall of the pen barrel 200 in the direction from the pushing component to the writing component 100. When the reset rod 420 is in the first working position, the pushing surface 42221 pushes the first guide slope 3241 so that the second mating part 324 drives the first hook part 3222 to disengage from the first surface 221.
[0083] Understandably, the inclined surface can change the direction of the force. Specifically, as the push surface 42221 moves along the first direction D1 with the reset rod 420, it pushes and engages with the first guide inclined surface 3241. The force exerted by the push surface 42221 on the first guide inclined surface can generate a component force perpendicular to the first direction D1, which in turn drives the second engaging part 324 to retract toward the center line of the writing pen. The second engaging part 324 then drives the first elastic arm to retract, causing the first hook to lose its engagement with the first surface 221.
[0084] In one embodiment of this application, the pushing surface 42221 includes a plane and a second guide slope. The second guide slope has the same inclination direction as the first guide slope 3241, so as to improve the smoothness of the cooperation between the pushing surface 42221 and the first guide slope 3241.
[0085] Figure 1c yes Figure 1b An enlarged structural diagram of point A on the writing pen. (See diagram below.) Figure 1b and Figure 1c As shown, in one embodiment of this application, the connecting sleeve 320 further includes a second limiting part 323. When the pushing mechanism 300 is in the reset position, the second limiting part 323 cooperates with the first surface 221 to keep the pushing mechanism 300 in the reset position, thereby preventing the elastic force applied by the first reset member to the pushing assembly from being too large, so that the pushing assembly returns to the reset position and is released from the pen barrel 200.
[0086] When the push mechanism 300 is in the reset position, the second limiting part 323 can engage with the first surface 221 inside the pen barrel 200 cavity to keep the push mechanism 300 stably in the reset state. When the push mechanism 300 moves from the reset position to the push position, the second limiting part 323 gradually moves away from the first surface 221 and the first limiting part 322 gradually moves closer to the first surface 221, until the push mechanism 300 moves to the push position, at which point the first hook part 3222 of the first limiting part 322 engages with the first surface 221, keeping the push mechanism 300 in the push position.
[0087] Specifically, such as Figure 2c As shown, the second limiting part 323 includes a second hook, which includes a second elastic arm 3231 and a second hook part 3232. When the pushing mechanism 300 is in the reset position, the first surface 221 and the second hook part 3232 stop and cooperate.
[0088] like Figure 2c As shown, in one embodiment of this application, the pushing mechanism 300 includes a pressure cap 310 and a connecting sleeve 320. The pressure cap 310 is fixedly connected to the first end of the connecting sleeve 320 and extends through the pen barrel 200. A first limiting part 322 is disposed on the connecting sleeve 320. A first limiting surface 3211 is provided on the outer wall of the connecting sleeve 320, and a second limiting surface 3212 is provided on the inner wall of the connecting sleeve 320.
[0089] Specifically, such as Figure 4As shown, the connecting sleeve 320 includes a connecting sleeve body 321, on which a first opening 3213 and a second opening 3214 are provided. A first limiting part 322 is provided on the wall of the first opening 3213, and a second limiting part 323 is provided on the wall of the second opening 3214. Exemplarily, the first elastic arm 3221 of the first limiting part 322 is connected to the wall of the first opening 3213, and a first hook is provided at the first end of the first elastic arm 3221 near the pen tip 120. The second elastic arm 3231 of the second limiting part 323 is connected to the wall of the second opening 3214, and a second hook is provided at the first end of the second elastic arm 3231 near the pen tip 120.
[0090] like Figure 2d As shown, the first elastic member 410 has a first end and a second end disposed opposite to each other in the first direction D1. The first end of the first elastic member 410 abuts against the first limiting surface 3211, and the second end of the first elastic member 410 abuts against the second surface 222. During the process of the pushing mechanism 300 moving from the reset position to the pushing position, the first limiting surface 3211 gradually approaches the second surface 222 to compress the first elastic member 410. When the first limiting part 322 disengages from the first surface 221, the first elastic member 410 pushes the connecting sleeve 320 under the action of the reset force. The connecting sleeve 320 drives the pressure cap 310 to move until the second limiting part 323 stops and engages with the first surface 221, and the pushing mechanism 300 returns to the reset position.
[0091] like Figure 1c As shown, the reset rod 420 is movably disposed on the connecting sleeve 320. A third limiting surface 4211 is provided on the outer wall of the reset rod 420. When the reset rod 420 is in the first position, i.e., in an unpressed state, the second elastic member 430 maintains its natural length. At this time, the third limiting surface 4211 of the reset rod 420 is in close contact with the second limiting surface 3212 on the inner wall of the connecting sleeve 320, thus stably holding the reset rod 420 in the first position. A fourth limiting surface 4212 is also provided on the inner wall of the reset rod 420. The two ends of the second elastic member 430 are respectively connected to the pressure cap 310 and the fourth limiting surface 4212 to provide a reset force to the reset rod 420.
[0092] Please combine Figure 4 Reference Figure 5 In one embodiment of this application, the reset rod 420 includes a reset rod body 421, a drive part 422 disposed on the reset rod body 421, and the drive part 422 passes through the push assembly through the first opening 3213 on the connecting sleeve body 321.
[0093] Specifically, such as Figure 5As shown, the driving part 422 includes a first rib 4221 and a second rib 4222. The first rib 4221 is disposed on the outer wall of the reset rod 420, and the second rib 4222 is disposed at an angle to the first rib 4221. The surface of the second rib 4222 facing the outer wall of the reset rod 420 forms a pushing surface 42221. The first rib 4221 can support the second rib 4222, so that a space is formed between the second rib 4222 and the reset rod body 421 for accommodating the second mating part 324 (e.g., ...). Figure 1e As shown), so that the second mating part 324 can be driven by the driving part 422, thereby causing the first hook to disengage from the first surface 221.
[0094] It should be noted that the included angle between the first rib 4221 and the second rib 4222 is 90°.
[0095] like Figure 5 As shown, to facilitate the retraction of the first hook towards the center line of the stylus, a clearance recess 4213 is provided on the outer wall of the reset rod 420. The clearance recess 4213 is opposite to the drive part 422 and provides clearance space for the first hook part 3222 when the first hook part disengages from the first surface 221. Specifically, the clearance recess 4213 can be a groove provided in the reset rod body 421.
[0096] In summary, the writing pen provided in this application embodiment has undergone structural design optimization and improvement, particularly in the arrangement of its ink filling component. This ink filling component includes a pushing mechanism 300 and a resetting mechanism 400, with the pushing mechanism 300 having a pushing position and a resetting position. This design not only improves the ease of assembling the ink cartridge 500 but also effectively enhances the overall stability and user experience of the writing pen.
[0097] Specifically, when assembling the ink cartridge 500, the user first needs to separate the pen barrel 200 from the writing component 100 to allow the ink cartridge 500 to be placed inside the pen barrel 200. Then, the user can place the ink cartridge 500 between the puncture part 140 and the ink filling component, and complete the initial pre-assembly of the ink cartridge 500 by tightening the pen barrel 200 and the writing component 100. After the ink cartridge 500 is pre-assembled, the pushing mechanism 300 is stably held in the reset position under the combined action of the second limiting member and the first elastic member 410, and the reset rod 420 is in the first working position, with the ink cartridge 500 not yet connected to the puncture part 140.
[0098] Next, the user can hold the pen barrel 200 and push the push mechanism 300. During this process, the push mechanism 300 is moved to the push position along the first direction D1 by an external impact force. When the push mechanism 300 reaches the push position, it pushes the ink sac 500 forward, making it come into close contact with the puncture part 140 and achieving conduction, thereby completing the establishment of the ink delivery channel. When the push mechanism 300 is in the push position, the ink sac 500 applies a reaction force to the reset rod 420, keeping the reset rod 420 in the second position.
[0099] Meanwhile, to ensure the stability of the push mechanism 300 in the push position, a stable engagement relationship is formed between the push mechanism 300 and the pen barrel 200 when the push mechanism 300 is in the push position. Specifically, the push mechanism 300 is provided with a first limiting part 322, while the pen barrel 200 or related components are provided with a corresponding first engaging part 220. When the push mechanism 300 is in the push position, a limiting engagement relationship is formed between the first limiting part 322 and the first engaging part 220, thereby locking the push mechanism 300 in this position. This design effectively prevents the ink sac 500 from shaking due to vibration or pressure changes during writing, thus avoiding the risk of the ink sac 500 separating from the puncture part 140. This not only significantly reduces the possibility of ink leakage during writing but also reduces the abnormal noise caused by the collision between the ink sac 500 and the inner wall of the pen barrel 200, greatly improving the user's writing comfort and overall user experience. Furthermore, since the push mechanism 300 remains in the push position after the ink cartridge 500 is assembled, frequent operation of the push mechanism 300 by the user is avoided. This stable structural design helps extend the service life of the push mechanism 300 and the reset mechanism 400, thereby improving the durability and reliability of the entire inking assembly.
[0100] When the user needs to replace the ink cartridge 500, simply rotate the pen barrel 200 to separate it from the writing component 100 and remove the old ink cartridge 500. At this time, the reset mechanism 400 begins to function, causing the first limiting part 322 on the push mechanism 300 to disengage from the first mating part 220, releasing the limiting relationship between the two. The push mechanism 300 can then smoothly retract from the push position to the reset position, preparing for the next assembly of the ink cartridge 500.
[0101] Finally, it should be noted that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described in detail here.
[0102] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0103] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.
[0104] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.
Claims
1. A writing pen, characterized in that, include: A writing component includes a puncture portion for puncturing an ink sac; The pen barrel is detachably connected to the writing component; An ink filling assembly is movably disposed on the pen barrel. The ink filling assembly includes a pushing mechanism and a resetting mechanism. The pushing mechanism is used to push and cooperate with the ink sac. The pushing mechanism includes a first limiting part. A first mating part is disposed in the cavity of the pen barrel. The pushing mechanism has a pushing position and a reset position; When the pushing mechanism is in the pushing position, the pushing mechanism pushes the ink sac so that the puncture part communicates with the ink sac, and the first limiting part is limited and engaged with the first mating part so that the pushing mechanism is kept in the pushing position; The reset mechanism is used to disengage the first limiting part from the first mating part and to move the pushing mechanism from the pushing position to the reset position.
2. The writing pen according to claim 1, characterized in that, The first mating part includes a first surface facing the writing component and a second surface facing away from the writing component. When the pushing mechanism is in the pushing position, the first surface stops and engages with the first limiting part. The reset mechanism includes a first elastic element and a reset driving element. The reset driving element is used to disengage the first limiting portion from the first surface. The first elastic element is disposed between the second surface and the pushing mechanism so that the pushing mechanism can be moved to the reset position under the action of the reset force.
3. The writing pen according to claim 2, characterized in that, The first limiting part includes a first hook, which includes a first elastic arm and a first hook portion. When the pushing mechanism is in the pushing position, the first surface and the first hook portion stop and cooperate. The reset drive includes a reset rod and a second elastic element. The reset rod is movably disposed on the pushing mechanism, and the second elastic element is disposed between the reset rod and the pushing mechanism. The reset rod includes a drive part, and a second mating part is provided on the first hook. The reset rod has a first station extending out of the push mechanism and a second station retracted into the push mechanism. The driving part is used to drive the second cooperating part when the reset rod moves from the second station to the first station, so that the second cooperating part drives the first hook part to disengage from the first surface. The second elastic element keeps the reset rod in the first position under the action of the reset force.
4. The writing pen according to claim 3, characterized in that, When the pushing mechanism is in the pushing position, the pushing mechanism pushes the ink sac, and the ink sac acts on the reset rod to compress the second elastic element so that the reset rod is held in the second working position.
5. The writing pen according to claim 3, characterized in that, The driving part includes a pushing surface facing the second mating part; The second mating part is provided with a first guide slope that mates with the push surface; the first guide slope gradually slopes toward the inner wall of the pen barrel in the direction from the push assembly to the writing assembly; When the reset rod is in the first working position, the push surface pushes against the first guide slope, so that the second mating part drives the first hook part to disengage from the first surface.
6. The writing pen according to any one of claims 3-5, characterized in that, The pushing mechanism includes a pressure cap and a connecting sleeve. The pressure cap is fixedly connected to the first end of the connecting sleeve and extends through the pen barrel. The first limiting part is disposed on the connecting sleeve. The outer wall of the connecting sleeve is provided with a first limiting surface, and the inner wall of the connecting sleeve is provided with a second limiting surface. The two ends of the first elastic element abut against the first limiting surface and the second surface, respectively; The reset rod is movably disposed on the connecting sleeve. The outer wall of the reset rod is provided with a third limiting surface. The two ends of the second elastic member abut against the pressure cap and the reset rod respectively. When the reset rod is in the first working position, the second elastic member pushes the reset rod so that the third limiting surface abuts against the second limiting surface.
7. The writing pen according to claim 6, characterized in that, The connecting sleeve also includes a second limiting part. When the pushing mechanism is in the reset position, the second limiting part cooperates with the first surface stop to keep the pushing mechanism in the reset position.
8. The writing pen according to claim 6, characterized in that, The second limiting part includes a second hook, which includes a second elastic arm and a second hook portion. When the pushing mechanism is in the reset position, the first surface and the second hook portion stop and cooperate.
9. The writing pen according to claim 5, characterized in that, The driving part extends through the pushing assembly. The driving part includes a first rib and a second rib. The first rib is disposed on the outer wall of the reset rod. The second rib is disposed at an angle to the first rib. The surface of the second rib facing the outer wall of the reset rod forms the pushing surface.
10. The writing pen according to claim 9, characterized in that, The outer wall of the reset rod is provided with a clearance recess, which is opposite to the drive part. The clearance recess is used to provide clearance space for the first hook part when the first hook part is disengaged from the first surface.
11. The writing pen according to any one of claims 1 to 5, characterized in that, The writing assembly also includes a cylinder, a pen tip, and a water reservoir. The water reservoir is disposed inside the cylinder, the pen tip is disposed at the first end of the water reservoir and exposed outside the cylinder, and the puncture part is disposed at the second end of the water reservoir.
12. The writing pen according to any one of claims 1 to 5, characterized in that, The writing component also includes an ink sac, which includes a casing and ink disposed within the casing, and the puncture portion is detachably connected to the casing.