An inverted self-locking push-button pen
Through the innovative design of the inverted self-locking click pen, the counterweight column and locking block automatically lock the click lead when inverted, solving the problems of accidental touch and instability of existing push-button heat-erasable gel pens and mechanical pencils when used inverted, and achieving stable erasing and writing continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI M&G STATIONERY INC
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-30
AI Technical Summary
Existing push-button heat-erasable gel pens and mechanical pencils are prone to accidental ejection or retraction of the lead when used upside down due to accidental touch or improper force, affecting erasing performance and writing efficiency. Furthermore, existing solutions suffer from complex structures, high costs, and poor reliability.
It adopts an inverted self-locking clicker design. Through the coordinated action of the counterweight, locking block and limiting boss, the clicker is automatically locked in the inverted state to prevent accidental operation; it is unlocked in the normal use state to ensure the continuity and convenience of the writing process.
It effectively solves the problem of accidental ejection or retraction of the pen refill when used upside down, improving the stability and convenience of the writing instrument and meeting users' needs for stability and convenience when used upside down.
Smart Images
Figure CN224426936U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of writing instruments, and in particular to an inverted self-locking snap-action pen. Background Technology
[0002] In the field of modern stationery, writing instruments such as push-button heat-erasable gel pens and mechanical pencils are widely used due to their convenience. These pens are usually equipped with a push-button that contains an eraser or heat eraser, allowing users to easily erase writing by simply inverting the pen and using the eraser or heat eraser inside the push-button.
[0003] Currently, there are two main designs for push-button erasable gel pens and mechanical pencils. One design uses the conventional push-button structure, simply inserting the heat-erasable material or eraser into the push-button. The drawback of this design is that during paper erasing, even slight pressure can easily trigger the push-button, causing the lead or core to be ejected, affecting normal use. The other common design places the push-button on the side of the pen barrel. This design allows for the integration of a heat-erasable eraser at the top of the pen, facilitating erasing during writing. However, this design also presents a significant problem: when erasing, because the pen is inverted (tip up, end down), accidental contact with the push-button on the side of the barrel can easily trigger the mechanism. This accidental triggering can cause the pen refill to be pushed out or retracted unexpectedly, which not only interrupts the erasing process and reduces the erasing effect, but may also cause the written content to be destroyed due to the sudden movement of the pen refill, or even damage the pen refill, affecting subsequent normal use and reducing writing efficiency.
[0004] In summary, current market-available push-button erasable gel pens and mechanical pencils generally suffer from accidental activation or difficulty in control when used upside down. Existing solutions are also inadequate due to their complex structure, high cost, and poor reliability, failing to meet users' demands for stability and convenience when using writing instruments upside down. Therefore, there is an urgent need for an inverted self-locking push-button pen that can effectively solve these problems. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing click pens, such as accidental ejection or retraction of the lead, damage to writing content, lead breakage, and interruption of the erasing process, caused by accidental contact with the clicker or improper force when used upside down. The invention aims to provide an inverted self-locking click pen that, through an innovative inverted self-locking mechanism design, automatically locks the clicker in the inverted state to prevent accidental operation, while smoothly unlocking in normal use, ensuring the continuity and convenience of the writing process and significantly improving the user experience.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] An inverted self-locking push-button pen includes: a pen neck, a spring-loaded reset assembly, a pen barrel, a pen refill, a rotating wheel, a push-button, a push-button head, a counterweight post, and a locking block; the rotating wheel abuts against the pen refill, the push-button can cooperate with the rotating wheel and the spring-loaded reset assembly, and the push-button drives the pen refill to extend or retract by pressing; the pen neck and the pen barrel are detachably connected to form a cavity, the counterweight post is slidably disposed in the cavity, and a guide is provided at the end of the counterweight post near the push-button head; the side wall of the pen barrel includes a guide hole; the locking block is embedded in... Inside the guide hole, the locking block is provided with a guide groove that cooperates with the guide component; the inverted self-locking press pen has the following two states: Inverted state: the counterweight column slides along the cavity towards the press core under the action of gravity, and drives the locking block to move towards the axis through the guide component, so that the locking block and the press core interfere with each other in the axial direction at least part of the way, restricting the axial displacement of the press core; Writing state: the locking block does not interfere with the press core in the axial direction, and the press core can move freely under the pressing force.
[0008] Furthermore, the counterweight column includes a main body and a long rod. The long rod extends axially and is provided with a limiting boss. The guide and the limiting boss are distributed at intervals along the axial direction.
[0009] Furthermore, a second stop and a first stop are respectively provided at the front and rear ends of the guide hole, and the second stop and the first stop extend in the circumferential direction.
[0010] Furthermore, the rear end of the press core is provided with a concave ring, and the rear end of the press head is provided with a convex ring, with the concave ring and the convex ring being interference fit.
[0011] Furthermore, the guide groove is slanted as a whole.
[0012] Furthermore, the elastic reset assembly includes a front spring and a rear spring. The front spring is located between the front end of the pen neck and the front end of the pen tip; the rear spring is located between the pen barrel and the push button. When the push button is not pressed, the rear spring resets the push button to its initial state and prevents it from wobbling back and forth along the axis.
[0013] Furthermore, the guide hole and the locking block are fitted with a clearance.
[0014] Furthermore, the second stop and the first stop include clearance grooves on both sides along the circumferential direction, which are used to allow long rods to pass freely along the axial direction.
[0015] Furthermore, the long rod has a "U" shaped structure.
[0016] Furthermore, the long rod is made of a flexible material.
[0017] Furthermore, a counterweight is fixedly connected to the main body.
[0018] Furthermore, the counterweight can be any one of the following: a ring, a cylinder, or a rectangle.
[0019] The technical effects of this utility model are as follows:
[0020] This invention provides an inverted self-locking click pen. Through the coordinated action of a counterweight, a locking block, and a limiting boss, the pen achieves automatic locking when inverted. When the pen is inverted, the counterweight slides down towards the click head under gravity, pushing the locking block to engage with the lead's positioning groove, thus locking the lead. This design is particularly suitable for scenarios requiring frequent inversion, such as heat-erasable gel pens and mechanical pencils with erasers. It effectively solves the problem of accidental lead extension during erasing due to angle or pressure, allowing users to achieve stable erasing without consciously controlling the force. When the pen returns to its writing position, the counterweight returns to the front of the cavity, and the locking block, under the coordinated action of the slide and guide, radially exits the positioning groove. The lead immediately resumes its free travel under the drive of the elastic reset component, ensuring smooth and precise lead retraction.
[0021] This utility model of an inverted self-locking press pen, through its innovative locking mechanism design, successfully solves the common problem of accidental touches in existing push-button erasable gel pens and mechanical pencils when used upside down, thus meeting users' needs for stability and convenience when using writing instruments upside down. Attached Figure Description
[0022] The above-described technical content of this utility model and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution. In the drawings, the same reference numerals represent the same or similar elements.
[0023] Figure 1 It is an exploded view of an inverted self-locking snap-action pen;
[0024] Figure 2 It is a 3D schematic diagram of the pen barrel;
[0025] Figure 3 This is a side view of the pen barrel;
[0026] Figure 4 yes Figure 3 Sectional view along the AA direction;
[0027] Figure 5 yes Figure 3 Sectional view along the BB direction;
[0028] Figure 6 This is a 3D diagram of the pusher head;
[0029] Figure 7 This is a side view of the push-button;
[0030] Figure 8 yes Figure 7 Sectional view along the AA direction;
[0031] Figure 9 This is a three-dimensional schematic diagram of the counterweight column;
[0032] Figure 10 These are multi-angle side views of the counterweight column;
[0033] Figure 11 This is a side view of the counterweight column;
[0034] Figure 12 yes Figure 11 Sectional view along the AA direction;
[0035] Figure 13 yes Figure 11 Sectional view along the BB direction;
[0036] Figure 14 This is a multi-angle 3D schematic diagram of the snap button;
[0037] Figure 15 This is a side view of the snap button;
[0038] Figure 16 This is a side view of the snap button from another angle;
[0039] Figure 17 yes Figure 16 Sectional view along the AA direction;
[0040] Figure 18 This is a 3D schematic diagram of the rotating wheel;
[0041] Figure 19 This is a front view of the rotary wheel;
[0042] Figure 20 This is a side view of the rotary wheel;
[0043] Figure 21 yes Figure 20 Sectional view along the AA direction;
[0044] Figure 22 This is a 3D schematic diagram of the lock block (left);
[0045] Figure 23 This is a top view of the lock block (left);
[0046] Figure 24 This is the front view of the lock block (left);
[0047] Figure 25 yes Figure 24 Sectional view along the AA direction;
[0048] Figure 26 This is a side view of the lock block (left).
[0049] Figure 27 This is a 3D schematic diagram of the lock block (right);
[0050] Figure 28 This is a diagram showing the engagement state of the internal components of the inverted self-locking snap pen in writing mode;
[0051] Figure 29 This is a schematic diagram showing the relative positions of the locking block and the snap button in the writing state;
[0052] Figure 30 This is a cross-sectional view of the rear end of the self-locking press pen during writing.
[0053] Figure 31 yes Figure 3 Color illustrations;
[0054] Figures 32-33 It is a variant of the counterweight in different embodiments.
[0055] The reference numerals in the attached figures are explained as follows:
[0056] 100 pen neck
[0057] 200 pen barrels
[0058] 210 First column
[0059] 220 Second column
[0060] 230 Penholder Holder
[0061] 240 ribs
[0062] 250 First Stop Platform
[0063] 260 Second Stop Platform
[0064] 270 guide hole
[0065] 280 clearance slot
[0066] 300 pen refills
[0067] 400 rpm
[0068] 430 Pen Refill Connector
[0069] 440 Rotary Guide Groove
[0070] 450 Rotor Inner Cavity
[0071] 460-turn ratchet
[0072] 500 presses
[0073] 530 Press-to-Pattern Card Table
[0074] 550 raised ring
[0075] 600 counterweight column
[0076] 610 Main Body
[0077] 620 Long rod
[0078] 630; 630' counterweight
[0079] 660 Limiting boss
[0080] 670 guide component
[0081] 700 lock blocks
[0082] 760 Limiting Slot
[0083] 770 Slide
[0084] 800-press core
[0085] 850 concave ring
[0086] 860 Press-type Ratchet
[0087] 870 positioning slot
[0088] 840 Press Core Extension Section
[0089] 820 Press Core Guide Groove
[0090] 910 Front Spring
[0091] 920 rear spring Detailed Implementation
[0092] The detailed features and advantages of this utility model are described below in specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this utility model and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, those skilled in the art can easily understand the related objectives and advantages of this utility model.
[0093] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0094] In the description of this embodiment, it should be noted that the terms "upper," "lower," etc., indicating orientation or positional relationships are defined with reference to the coordinates of the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element 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 present invention. In this invention, during normal writing, the position of the pen tip is considered forward, and the presser tip is considered backward.
[0095] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0096] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0097] See Figure 1 This utility model relates to an inverted self-locking clickable pen, comprising: a pen neck 100, a pen barrel 200, a pen core 300, a rotating wheel 400, a press core 500, a press head 600, and a spring-loaded reset assembly. The pen neck 100 and pen 200 are detachably connected by threads, and a cavity is formed between the pen neck and the pen barrel, which can accommodate the other components of the inverted self-locking clickable pen.
[0098] Main components and their structure:
[0099] See Figures 2-5 The diagram shows the structure of the pen barrel 200 of this utility model. The pen barrel 200 is generally a slender cylinder, and its length and diameter are designed according to the specifications of the actual pen.
[0100] Two guide holes 270 are symmetrically distributed on the left and right sides of the end of the pen barrel 200 near the pusher 500. These two guide holes 270 have a through-type rectangular design, ensuring smooth assembly and stable movement of the internal components. A first stop 250 and a second stop 260 are respectively provided at the front and rear ends of the guide holes 270. These two stops extend circumferentially from the front and rear sides of the guide holes 270, but do not form a complete annular structure. This design creates symmetrical clearance grooves 280 along the front and sides of the first stop, providing necessary clearance space for the sliding of the counterweight column 600.
[0101] The four corners of the guide hole 270 are finely rounded to eliminate sharp edges and prevent scratches and damage that may occur during assembly and use. The inner contour of the guide hole 270 basically matches the outer contour of the locking block 700, with a clearance fit between them. This design ensures that the locking block 700 can slide flexibly in the guide hole 270, while guaranteeing the stability and accuracy of the movement.
[0102] The inner side of the pen barrel 200 is also provided with a first column 210 and a second column 220 for cooperation with other components. The first column 210 is located at the rear of the pen barrel 200, and its top outer edge is provided with a pen barrel retainer 230, which is used to fix the rear spring 920 and ensure the stable extension and contraction of the rear spring 920 within the pen barrel 200. The second column 220 is located at the front of the pen barrel 200, and its inner wall is provided with circumferentially evenly distributed ribs 240, which guide the snap-fit core 800.
[0103] Figures 6-8 The structure of the push-button is shown. Mounted at one end of the pen barrel 200, it is the primary contact component for erasing writing. The push-button includes a radially inwardly extending convex ring 550 and a push-button retainer 530 located at the rear end of the inner wall. The convex ring 550 and the concave ring 850 on the push-button core 800 are detachably fixed together via an interference fit. This connection method ensures reliability while allowing for easy disassembly and cleaning when needed. The push-button retainer 530 engages with the pen barrel retainer 230, limiting the range of motion of the rear spring 920. Furthermore, when the pen is inverted, the counterweight slides towards the push-button under gravity, pushing the locking block to move and engage in the positioning groove of the push-button core.
[0104] Figures 9-13 The counterweight column 600 has a cylindrical body 610 at its front end, which provides sufficient mass to allow the counterweight column 600 to slide stably under gravity. The upper end features symmetrically distributed long rods 620, which extend axially and form a U-shaped symmetrical structure. Each long rod 620 has a guide 670 and a limiting boss 660, spaced apart along its length. Each long rod 620 has two guides 670 and two limiting bosses 660. This design ensures uniform force distribution on the counterweight column 600 during sliding, preventing skewing and jamming. The long rods 620 and the body 610 are integrally molded, simplifying the assembly process and improving the overall strength and reliability of the component.
[0105] Optionally, a counterweight 630 can be placed at any position on the main body 610. See also Figure 31 The counterweight 630 is a ring-shaped counterweight fitted onto the main body 610; see also Figure 32The counterweight 630' is a cylindrical counterweight fitted onto the front end of the main body 610. Made of metal, its high density and strength not only provide sufficient weight but also ensure stability and durability during long-term use. The use of the counterweight enhances the functionality and reliability of the counterweight column and provides more possibilities for the diverse design of the inverted self-locking click pen. The total weight of the counterweight column can be flexibly adjusted by increasing or decreasing the number of counterweights or adjusting their position, thus adapting to the usage needs of different scenarios.
[0106] Figures 15-17 This is a schematic diagram of the press lead 800. The press lead 800 has a concave ring 850 at the top and a positioning groove 870 on the side wall. In the inverted state, the locking block 700 is embedded in the positioning groove 870 to achieve the locking function. It also includes a press lead extension section 840 extending downward along the axis and a press lead ratchet 860. The two cooperate with the rotating wheel 400 to realize the functions of pressing to extend the lead and retract the lead.
[0107] Figures 18-21 The diagram shows the structure of the rotating wheel 400. The rear end of the rotating wheel includes a rotating wheel ratchet 460, and the outer periphery includes rotating wheel guide grooves 440 arranged circumferentially and extending along the axial direction. The lower end of the rotating wheel is provided with a pen refill connecting section 430 for connecting with the pen refill 300 to drive the pen refill, and also includes a rotating wheel inner cavity 450.
[0108] Figures 22-26 The diagram shows the locking blocks 700, which are arranged symmetrically from left to right and installed in the guide holes 270 of the pen barrel 200. Each locking block has a sliding groove 770 and a limiting groove 760 on each of its two sides. The sliding groove 770 engages with the guide member 670 on the counterweight column 600, while the limiting groove 760 engages with the limiting boss 660 on the counterweight column 600. The locking blocks 700 can slide flexibly radially within the guide holes 270, achieving locking and unlocking functions through their interaction with the counterweight column 600.
[0109] Figure 27 This is a 3D schematic diagram of the right-side locking block. Since it is symmetrical to the left-side locking block and operates on the same principle, it will not be described in detail.
[0110] Assembly relationship of the inverted self-locking clicker pen:
[0111] First, insert the left and right locking blocks 700 into the guide holes 270 on both sides of the pen barrel. During installation, the locking blocks 700 are inserted along the axial direction of the guide holes 270 until they are fully inserted. Due to the constraints of the first stop 250 and the second stop 260, the axial movement of the locking blocks 700 within the guide holes 270 is limited, ensuring that the locking blocks 700 can slide stably within the guide holes 270. Simultaneously, the locking blocks 700 can partially slide out of the guide holes 270 in the radial direction without tipping over, ensuring the stability of the locking blocks 700 in conjunction with other components.
[0112] Align the long rod 620 of the counterweight column 600 with the guide hole 270 of the pen barrel 200, so that the fitting 670 on the long rod 620 is aligned with the guide hole 270. After alignment, push the counterweight column 600 until the limiting boss 660 is engaged in the limiting groove 760. It is easy to understand that during the process of the limiting boss 660 passing through the slider, the two arms of the long rod 620 will be deformed outward by the repulsive force. Due to the clearance groove 280 included in the pen barrel, clearance space is provided for the assembly process, making the entire inverted self-locking click pen easier to assemble and preventing jamming due to interference between parts. When the limiting boss is fully engaged in the limiting groove, a stable assembly is formed between the counterweight column and the locking block.
[0113] The presser core 800 is aligned with the guide groove 820 of the presser core 800 and inserted into the rib 240 of the pen barrel. The two work together to ensure that the presser core 800 slides back and forth along the axis without rotating during use. The presser head and presser core are detachably fixed together via an interference fit between the concave ring 850 and the convex ring 550. A rear spring mounted in the presser head abuts against the presser head retainer at one end and against the pen barrel retainer at the other, assisting in the reset of the inverted self-locking presser pen. Furthermore, when the presser head is not pressed, the pen barrel is a relatively stationary component. Because the rear spring is engaged between the presser head and the pen barrel, with its front end abutting against the pen barrel and its rear end abutting against the inside of the presser head, this engagement ensures that the presser head is always in its initial reset state (i.e., the state with the longest extension). This reset mechanism not only ensures the stability of the pusher head and effectively prevents any unnecessary back-and-forth movement of the pusher head along the axial direction when it is not in operation, but also stabilizes the position of the pusher core along the axial direction, ensuring that the locking block can quickly and accurately align with the positioning groove and achieve efficient locking.
[0114] The working principle of the inverted self-locking click pen:
[0115] With the pen retracted, inverting the pen causes the counterweight 600 to slide towards the press head due to gravity. Simultaneously, the guide 670 also slides towards the press head under gravity. Since the slide groove 770 is an oblique line, the axial displacement of the locking block is limited. Therefore, the locking block only slides radially inward. As the left and right locking blocks 700 slide further towards the axis of the press head 800, both locking blocks 700 are embedded in the positioning groove 870. At this point, the press head and locking blocks interfere axially, locking the movement of the press head. Even if the press head is pressed, the press head cannot move axially. The inverted self-locking press pen can then be used upside down, for example, by using the eraser or heat-erasable material on the press head to correct handwriting.
[0116] See Figures 28-30 When the pen is in writing mode, with the tip pointing downwards and the pusher head upwards, the counterweight slides away from the pusher head. Under the combined action of the slide groove and guide, the locking blocks on both sides slide radially outwards, gradually disengaging from the positioning groove 870. At this point, since the pusher core and the locking blocks no longer interfere along the axial direction, the pusher core can freely extend and retract under the pusher action. In this state, the inverted self-locking pusher pen exhibits a similar pusher process to a conventional pusher pen. The user presses the pusher head, which pushes the pusher core along the axial direction. The pusher core, limited by the pen barrel ribs, only moves axially without rotating. The pusher core ratchet... Engaging with the ratchet of the rotating wheel, the lead and the rotating wheel move forward synchronously. During this process, the rib 240 simultaneously engages in the rotating wheel guide groove 440 and the lead guide groove 820, further pushing the rotating wheel forward until the rotating wheel guide groove 440 disengages from the rib. At this point, the rotating wheel rotates under the combined action of the front spring 910 and the rear spring 920. When the hand is released, due to the different depth positions of the outer positioning ratchet 470, through the relative rotation of the rotating wheel and the rib, the rib eventually engages the positioning ratchet at different positions. When the rotating wheel is in a forward position, the lead extends. Pressing the hand again retracts the lead. The above-described lead-pressing process is similar to the principle of a conventional click pen, so it will not be described in detail further.
[0117] Industrial applicability:
[0118] This invention provides an inverted self-locking click pen. Through the coordinated operation of a counterweight, locking block, and limiting boss, the pen achieves automatic locking when inverted. When the pen is inverted, the counterweight slides down towards the click head under gravity, pushing the locking block to engage with the lead's positioning groove, thus locking the lead. This design is particularly suitable for scenarios requiring frequent inversion, such as heat-erasable gel pens and mechanical pencils with erasers. It effectively solves the problem of accidental lead extension during erasing due to angle or pressure, allowing users to achieve stable erasing without consciously controlling the force. When the pen returns to its writing position, the counterweight returns to the front of the cavity, and the locking block, under the coordinated action of the sliding groove and guide, radially exits the positioning groove. The lead immediately resumes its free travel under the drive of the elastic reset component, ensuring smooth and precise lead retraction.
[0119] This utility model of an inverted self-locking press pen, through its innovative locking mechanism design, successfully solves the common problem of accidental touches in existing push-button erasable gel pens and mechanical pencils when used upside down, thus meeting users' needs for stability and convenience when using writing instruments upside down.
[0120] The terminology and expressions used herein are for descriptive purposes only, and this invention should not be limited to these terms and expressions. The use of these terms and expressions does not mean the exclusion of any illustrative and descriptive equivalent features (or parts thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.
[0121] Similarly, it should be noted that although the present invention has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions can be made without departing from the spirit of the present invention. Therefore, any changes or modifications to the above embodiments within the scope of the essential spirit of the present invention will fall within the scope of the claims of the present invention.
Claims
1. An inverted self-locking clickable pen, characterized in that, include: Pen neck, spring-loaded return assembly, pen barrel, refill, wheel, push button, pusher tip, counterweight post, and locking block; The rotating wheel abuts against the pen refill, and the push-button can cooperate with the rotating wheel and the spring-loaded reset assembly to drive the pen refill to extend or retract by pressing. The pen neck and the pen barrel are detachably connected to form a cavity, and the counterweight column is slidably disposed in the cavity. A guide is provided at the end of the counterweight column near the pusher. The pen barrel sidewall includes a guide hole; The locking block is embedded in the guide hole, and the locking block is provided with a guide groove that cooperates with the guide member; The inverted self-locking press pen exists in the following two states: Inverted state: Under the action of gravity, the counterweight column slides along the cavity toward the press core, and the guide drives the locking block to move along the guide hole toward the axis, so that the locking block and the press core interfere with each other in the axial direction at least part of the way, thus restricting the axial displacement of the press core; Writing state: The locking block does not interfere with the press core along the axial direction, and the press core can move freely under the pressing force.
2. The inverted self-locking clicker pen according to claim 1, characterized in that, The counterweight column includes a main body and a long rod. The long rod extends axially and is provided with a guide limiting boss. The guide and the limiting boss are distributed at intervals along the axial direction.
3. The inverted self-locking clicker pen according to claim 2, characterized in that, The guide hole is provided with a second stop and a first stop at its two ends, and the second stop and the first stop extend circumferentially.
4. The inverted self-locking clicker pen according to claim 3, characterized in that, The rear end of the press core is provided with a concave ring, and the rear end of the press head is provided with a convex ring. The concave ring and the convex ring are interference-fitted.
5. The inverted self-locking clicker pen according to claim 4, characterized in that, The guide groove is generally inclined.
6. The inverted self-locking clicker pen according to claim 5, characterized in that, The elastic reset assembly includes a front spring and a rear spring. The front spring is disposed between the front end of the pen neck and the writing end. The rear spring is disposed between the pen barrel and the push button. When the push button is not pressed, the rear spring resets the push button to its initial state and prevents it from wobbling back and forth along the axis.
7. The inverted self-locking clicker pen according to claim 6, characterized in that, The guide hole is clearance-fitted with the locking block.
8. The inverted self-locking clicker pen according to claim 7, characterized in that, The second stop and the first stop include clearance grooves on both sides along the circumferential direction, the clearance grooves being used to allow the long rod to pass freely along the axial direction.
9. The inverted self-locking clickable pen according to any one of claims 1-8, characterized in that, The long rod has a "U" shaped structure.
10. The inverted self-locking clickable pen according to claim 9, characterized in that, The long rod is made of an elastic material.
11. The inverted self-locking clicker pen according to claim 2, characterized in that, A counterweight is also fixedly connected to the main body.
12. The inverted self-locking clickable pen according to claim 11, characterized in that, The counterweight can be any one of a ring, cylinder, or rectangle.