A press-type writing tool

Abstract

This invention discloses a push-button writing instrument, comprising a pen holder (1) with a lead outlet hole (101), a lead assembly being provided inside the pen holder (1), the lead assembly including an ink tube (2) and a pen tip (3), the pen tip (3) being connected to one end of the ink tube (2); a pen tip sleeve (5) is connected to the end of the ink tube (2) near the pen tip (3), and the ink tube (2) and the pen tip sleeve (5) can slide relative to each other, the pen tip sleeve (5) is slidably fitted inside the pen holder (1), and a switch valve is provided at the end of the pen tip sleeve (5) near the pen tip (3); when the pen tip (3) is housed in the pen tip sleeve (5), the switch valve is closed; when the ink tube (2) moves toward the lead outlet hole (101), the pen tip (3) can pass through the switch valve and protrude outside the lead outlet hole (101). This push-button writing instrument does not require inserting or removing the pen sleeve during use, and can also seal the pen tip, making it very convenient to use and effectively preventing the pen tip from drying out.

Description

Technical Field

[0001] This invention relates to the field of writing instrument technology, and more specifically to a push-button writing instrument. Background Technology

[0002] Writing instruments are tools used for writing, such as ballpoint pens, felt-tip pens, highlighters, and magic pens. Among these, markers, white pens, fountain pens, and highlighters are highly volatile. When the nib of these instruments is exposed to air for extended periods, the ink inside easily evaporates, shortening the instrument's lifespan or causing damage. Therefore, these instruments usually have caps to prevent prolonged contact between the nib and air. While this design mitigates ink evaporation, the frequent insertion and removal of the cap is inconvenient, and the cap is also easily lost, causing further inconvenience. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a press-type writing tool that does not require inserting or removing the pen cap during use, and can also seal the pen tip, making it very convenient to use and effectively preventing the pen tip from drying out.

[0004] The technical solution of the present invention is to provide a push-button writing instrument having the following structure: a pen holder with a lead outlet hole; a lead assembly is provided inside the pen holder; the lead assembly includes an ink tube and a pen tip; the pen tip is connected to one end of the ink tube; a pen tip sleeve is connected to the end of the ink tube near the pen tip, and the ink tube and the pen tip sleeve are slidable relative to each other; the pen tip sleeve is slidably fitted inside the pen holder; a switch valve is provided at the end of the pen tip sleeve near the pen tip; when the pen tip is housed in the pen tip sleeve, the switch valve is closed; when the ink tube moves toward the lead outlet hole, the pen tip can pass through the switch valve and protrude outside the lead outlet hole.

[0005] With the above structure, the push-to-write tool of the present invention has the following advantages compared with the prior art:

[0006] Because the ink tube of the press-type writing instrument of the present invention is connected to a pen tip sleeve at one end near the pen tip, and the ink tube and the pen tip sleeve can slide relative to each other, the pen tip sleeve is slidably fitted inside the pen barrel, and a switch valve is provided at one end of the pen tip sleeve near the pen tip; when the pen tip is housed in the pen tip sleeve, the switch valve is in a closed state; when the ink tube moves towards the lead outlet hole, the pen tip can pass through the switch valve and protrude outside the lead outlet hole. This structure allows the writing instrument to be used without inserting or removing the pen tip sleeve, and can seal the pen tip when not in use, making it very convenient to use and effectively preventing the pen tip from drying out.

[0007] As an improvement, the switching valve includes a valve seat and a valve core, the valve core being movably connected to the valve seat, and the valve seat being mounted on the end of the pen tip sleeve; a driving structure is provided between the valve core and the pen tip sleeve. This structure is simple and easy to assemble.

[0008] As an improvement, the valve core is equipped with a drive pin, and the side wall of the pen tip sleeve is equipped with a drive track, with the drive pin engaging within the drive track. When the ink tube moves, it can drive the drive pin to slide within the drive track, thereby opening or closing the switch valve. With this structure, the drive mechanism between the valve core and the pen tip sleeve is simple, easy to assemble, and has a good driving effect.

[0009] As an improvement, the valve seat is provided with a through hole for the pen tip to pass through; the valve core is slidably fitted within the valve seat, and the movement of the valve core can open or block the through hole. With this structure, the switching valve has a simple structure and better switching effect.

[0010] As an improvement, the valve core includes a first movable member and a second movable member, which are stacked together and both are slidably fitted onto the valve seat. The first movable member has a first driving pin, and the second movable member has a second driving pin. The side wall of the pen tip sleeve has a first driving track and a second driving track. The first driving pin and the second driving pin are slidably fitted into the first driving track and the second driving track, respectively. When the ink tube moves towards the core outlet hole, the first and second movable members move in opposite directions along the first and second driving tracks, respectively, thus opening the through hole of the valve seat. When the ink tube moves away from the core outlet hole, the first and second movable members move relative to each other along the first and second driving tracks, respectively, thus blocking the through hole. This structure is simple, easy to assemble, and allows for flexible movement of the first and second movable members.

[0011] As an improvement, the first movable component has a first semi-circular groove on one side, and the second movable component has a second semi-circular groove on the side away from the first semi-circular groove. When the first and second movable components are stacked, the first and second semi-circular grooves are staggered. When the first and second movable components move in opposite directions to a certain position, the first and second semi-circular grooves join together to form a splicing hole. The shape of the splicing hole matches the shape of the ink tube, and the ink tube can pass through the splicing hole. With this structure, the fit between the first and second movable components and the ink tube is better.

[0012] As an improvement, the valve seat includes a first part and a second part, which are stacked together. The first part has a first slide rail, and the first movable component slides within the first slide rail. The second part has a second slide rail, and the second movable component slides within the second slide rail. The first and second slide rails are offset, with a partial overlap. This overlapping portion aligns with the through hole and allows the end of the ink tube to pass through. This structure is simple, easy to assemble, and allows the first and second movable components to slide freely within the first and second slide rails, respectively.

[0013] As an improvement, the first segment has a first guide groove on its side wall that matches the first drive pin, and the first drive pin passes through the first guide groove and protrudes outside the first segment; the second segment has a second guide groove on its side wall that matches the second drive pin, and the second drive pin passes through the second guide groove and protrudes outside the second segment. With this structure, the first guide groove guides the first drive pin, and the second guide groove guides the second drive pin, resulting in more stable and flexible sliding.

[0014] As an improvement, the pen tip sleeve has two opposing lugs protruding outwards from both sides of its end face near the pen tip. Each lug has a first drive rail and a second drive rail. The valve seat is located between the two lugs. The first component has first guide grooves on both side walls, and the first movable component has first drive pins on both side walls. The two drive pins pass through the two first guide grooves and slide in the first drive rails of the lugs. Similarly, the second component has second guide grooves on both side walls, and the second movable component has second drive pins on both side walls. These drive pins pass through the two second guide grooves and slide in the second drive rails of the lugs. This structure is simple and easy to assemble.

[0015] As an improvement, a pad is provided inside the end of the pen holder near the core outlet, and the shape of the pad matches the shape of the valve seat; a space is provided between the two side walls of the pad and the inner wall of the pen holder, and the space allows the lug to be inserted. With this structure, the pad supports the valve seat, and the space guides the lug insertion.

[0016] As an improvement, a limiting step is provided on the side wall of the ink tube, and an elastic element is provided between the limiting step and the valve seat. With this structure, the elastic element is supported between the limiting step and the valve seat, providing a pushing force to the valve seat to move away from the pen tip, so that the valve seat can automatically close when the ink tube is not under force.

[0017] As an improvement, the elastic element is a spring, which is sleeved around the ink tube. One end of the spring abuts against the limiting step, and the other end abuts against the end face of the valve seat. This structure is simple, easy to assemble, and provides good spring support.

[0018] As an improvement, a slider is provided on the side wall of the ink tube, and a matching hole is provided on the side wall of the pen tip sleeve. The slider slides within the matching hole. With this structure, the fit between the ink tube and the pen tip sleeve is simpler and easier to assemble.

[0019] As an improvement, a sealing element is provided on the side wall of the ink tube, and the edge of the sealing element abuts against the inner wall of the pen barrel. The sealing element can seal the gap between the ink tube and the pen barrel. With this structure, the sealing element can provide a sealed space for the pen tip when not in use, resulting in better anti-drying effect.

[0020] As an improvement, a locking structure is provided between the end of the ink tube away from the pen tip and the end of the pen holder away from the lead outlet. This structure allows the relative position of the ink tube and the pen holder to be locked during writing. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the push-to-write tool of the present invention.

[0022] Figure 2 This is an exploded structural diagram of the push-to-write tool of the present invention.

[0023] Figure 3 This is an exploded view of the pen refill assembly and pen tip cap of the push-to-write tool of the present invention.

[0024] Figure 4This is a three-dimensional structural diagram of the pen tip cap of the push-button writing instrument of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the switch valve of the push-button writing instrument of the present invention.

[0026] Figure 6 This is an exploded structural diagram of the switch valve of the push-button writing instrument of the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the open state of the switch valve of the push-button writing instrument of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the pen holder for the push-to-write tool of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the pen refill assembly and pen tip cap of the press-type writing instrument of the present invention after pressing.

[0030] Figure 10 This is a schematic diagram of the three-dimensional structure of the press-type writing tool of the present invention after pressing.

[0031] The figure shows: 1. Pen holder, 101. Core outlet hole, 102. Pad, 103. Space, 104. Locking groove, 2. Ink tube, 201. Slider, 202. Limiting step, 203. Seal, 204. Locking protrusion, 3. Pen tip, 4. Pen cap, 5. Pen tip sleeve, 501. Matching hole, 502. Lug, 503. First drive rail, 504. Second drive rail, 6. First split part, 601. First slide rail, 602. First through hole, 603. First guide groove, 7. Second split part, 701. Second slide rail, 702. Second through hole, 703. Second guide groove, 8. First movable part, 801. First drive pin, 802. First semi-circular groove, 9. Second movable part, 901. Second drive pin, 902. Second semi-circular groove, 10. Spring. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] It should also be understood that the terms “comprising,” “including,” “having,” “containing,” “comprise,” and “containing”, when used in this specification, indicate the presence of the described 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.

[0035] like Figures 1 to 2 As shown, this application discloses a push-to-write tool, including a pen holder 1 and a pen refill assembly.

[0036] For ease of explanation, one end of the writing instrument tip 3 is the lower end, and the end furthest from the tip 3 is the upper end.

[0037] like Figures 3 to 8 As shown, the pen holder 1 has an opening at its upper end and a lead outlet hole 101 at its lower end. The lead assembly includes an ink tube 2 and a pen tip 3, with the pen tip 3 tightly fitted inside the lower end of the ink tube 2. The ink tube 2 is filled with ink, which seeps out from the pen tip 3 for writing. The ink tube 2 is movably fitted inside the pen holder 1, and a pen cap is fitted onto the upper end of the ink tube 2, with the pen cap protruding from the upper end of the pen holder 1.

[0038] The ink tube 2 is connected to a pen tip sleeve 5 at one end near the pen tip 3. A slider 201 is provided on the side wall of the ink tube 2. In this specific embodiment, two sliders 201 are provided, each located on one of the two opposite side walls of the ink tube 2, and are integrally formed with the ink tube 2. A matching hole 501 is provided on the side wall of the pen tip sleeve 5, the shape of which matches the shape of the slider 201. The lower end of the ink tube 2 is slidably fitted within the pen tip sleeve 5, and the two sliders 201 are slidably fitted one-to-one within the matching holes 501 on both sides of the pen tip sleeve 5.

[0039] The pen tip sleeve 5 has an opening at its lower end, and a switch valve is provided at one end of the pen tip sleeve 5 near the pen tip 3. The switch valve includes a valve seat and a valve core, the valve core being movably connected to the valve seat, and the valve seat being mounted on the end of the pen tip sleeve 5; a drive structure is provided between the valve core and the pen tip sleeve 5.

[0040] The valve seat includes a first part 6 and a second part 7, which are stacked together. The first part 6 has a first slide rail 601, and the second part 7 has a second slide rail 701. The first slide rail 601 and the second slide rail 701 are offset, with a partial overlap. The bottom of the first slide rail 601 has a first through hole 602, and the bottom of the second slide rail 701 has a second through hole 702. The first through hole 602 and the second through hole 702 are aligned to form a through hole, allowing the lower end of the ink tube 2 to pass through. The overlapping portion of the first slide rail 601 and the second slide rail 701 is aligned with the through hole, and this overlapping portion also allows the end of the ink tube 2 to pass through.

[0041] The valve core includes a first movable member 8 and a second movable member 9, which are stacked together. The first movable member 8 is slidably fitted within the first slide rail 601, and the second movable member 9 is slidably fitted within the second slide rail 701. The first split body 6 has first guide grooves 603 on its opposite side walls, and the first movable member 8 has first drive pins 801 on its opposite side walls. Two first drive pins 801 pass through the two first guide grooves 603 and protrude outside the side walls of the first split body 6. The second split body 7 has second guide grooves 703 on its opposite side walls, and the second movable member 9 has second drive pins 901 on its opposite side walls. Two second drive pins 901 pass through the two second guide grooves 703 and protrude outside the side walls of the second split body 7. The first movable member 8 has a first semi-circular groove 802 on one side, and the second movable member 9 has a second semi-circular groove 902 on the side away from the first semi-circular groove 802. When the first movable member 8 and the second movable member 9 are stacked, the first semi-circular groove 802 and the second semi-circular groove 902 are misaligned, which can block the through hole. When the first movable member 8 and the second movable member 9 move in opposite directions to a certain position, the first semi-circular groove 802 and the second semi-circular groove 902 are spliced ​​together to form a splicing hole with an upper and lower misalignment. The shape of the splicing hole matches the shape of the ink tube 2, and the ink tube 2 can pass through the splicing hole.

[0042] The pen tip sleeve 5 has two opposing lugs 502 protruding outward from both sides of its end face near the end of the pen tip 3. Each lug 502 has a first drive rail 503 and a second drive rail 504, both of which are inclined in different directions. The valve seat is located between the two lugs 502. Two first drive pins 801 exposed on both sides of the first split body 6 are slidably engaged within the first drive rails 503 on both sides, and two second drive pins 901 exposed on both sides of the second split body 7 are slidably engaged within the second drive rails 504 on both sides. The ink tube 2 has a limiting step 202 on its side wall. An elastic element is provided between the limiting step 202 and the valve seat. In this specific embodiment, the elastic element is a spring 10. The spring 10 is sleeved on the outside of the ink tube 2. One end of the spring 10 abuts against the limiting step 202, and the other end of the spring 10 abuts against the end face of the first split body 6.

[0043] A pad 102 is provided inside the end of the pen holder 1 near the core outlet 101. The shape of the pad 102 matches the shape of the valve seat. Spaces 103 are provided between the two side walls of the pad 102 and the inner wall of the pen holder 1, allowing the lug 502 to be inserted. A sealing element 203 is provided on the side wall of the ink tube 2. The edge of the sealing element 203 abuts against the inner wall of the pen holder 1, sealing the gap between the ink tube 2 and the pen holder 1. The sealing element 203 has a ring-shaped structure, fitting around the ink tube 2. The inner wall of the sealing element 203 can also connect to the outer wall of the ink tube 2. The sealing element 203 and the ink tube 2 are integrally formed. The sealing element 203 is located above the slider 201, which is located above the limiting step 202.

[0044] A locking structure is provided between the end of the ink tube 2 away from the pen tip 3 and the end of the pen barrel 1 away from the core outlet 101. The locking structure includes a locking groove 104 and a locking protrusion 204. The locking groove 104 is located on the side wall of the pen barrel 1, and the locking protrusion 204 is located on the side wall of the ink tube 2. Locking structures are a conventional technology in push-type writing instruments and will not be described in detail here. Various structures available on the market can be applied to this application.

[0045] like Figure 9 and Figure 10As shown, when using the press-type writing instrument disclosed in this application, pressing down on the ink tube 2 causes it to slide downwards, which in turn causes the pen tip sleeve 5 to slide downwards. When it slides to a certain position, the valve seat rests against the pad 102. Continuing to press down on the ink tube 2 causes the pen tip sleeve 5 and the valve seat to slide relative to each other. At this time, the first drive pin 801 and the second drive pin 901 slide along the first drive track 503 and the second drive track 504 respectively, moving in opposite directions, thereby opening the through hole of the valve seat. The pen tip 3 can then pass through the through hole and protrude outside the valve seat. The spring 10 is compressed, and the locking structure locks the relative positions of the ink tube 2 and the pen holder 1, allowing the press-type writing instrument to write. Pressing down on the ink tube 2 again unlocks the locking structure. Upon release, the ink tube 2 springs up under the action of the spring 10, and the pen tip sleeve 5, valve seat, etc., return to their initial positions. The pen tip 3 then extends into the sealed space 103 formed by the pen tip sleeve 5, pen holder 1, and sealing element 203.

Claims

1. A push-button writing instrument, comprising a pen holder (1) with a lead hole (101), wherein the pen holder (1) contains a lead assembly, the lead assembly comprising an ink tube (2) and a pen tip (3), the pen tip (3) being connected to one end of the ink tube (2); characterized in that: The ink tube (2) is connected to a pen tip sleeve (5) at one end near the pen tip (3), and the ink tube (2) and the pen tip sleeve (5) can slide relative to each other. The pen tip sleeve (5) is slidably fitted inside the pen cylinder (1). A switch valve is provided at one end of the pen tip sleeve (5) near the pen tip (3). When the pen tip (3) is housed in the pen tip sleeve (5), the switch valve is closed. When the ink tube (2) moves toward the core outlet hole (101), the pen tip (3) can pass through the switch valve and protrude outside the core outlet hole (101). The switching valve includes a valve seat and a valve core. The valve core is movably connected to the valve seat, and the valve seat is installed on the end of the pen tip sleeve (5). A driving structure is provided between the valve core and the pen tip sleeve (5). The valve core is provided with a driving pin, and a driving track is provided on the side wall of the pen tip sleeve (5). The driving pin is engaged in the driving track. When the ink tube (2) moves, it can drive the driving pin to slide in the driving track, thereby opening or closing the switching valve. The valve seat is provided with a through hole for the pen tip (3) to pass through. The valve core is slidably engaged in the valve seat, and the movement of the valve core can open or block the through hole.

2. The push-to-write tool according to claim 1, characterized in that: The valve core includes a first movable part (8) and a second movable part (9), which are stacked together and both are slidably fitted on the valve seat. The first movable part (8) is provided with a first driving pin (801), and the second movable part (9) is provided with a second driving pin (901). The side wall of the pen tip sleeve (5) is provided with a first driving rail (503) and a second driving rail (504). The first driving pin (801) is slidably fitted within the first driving rail (503). The drive pin (901) slides within the second drive track (504); when the ink tube (2) moves toward the core outlet (101), the first movable member (8) and the second movable member (9) move in opposite directions along the first drive track (503) and the second drive track (504), respectively, which opens the through hole of the valve seat; when the ink tube (2) moves away from the core outlet (101), the first movable member (8) and the second movable member (9) move relative to each other along the first drive track (503) and the second drive track (504), respectively, which blocks the through hole.

3. The push-to-write tool according to claim 2, characterized in that: The first movable part (8) has a first semi-circular groove (802) on one side. When the first movable part (8) and the second movable part (9) are stacked, the second movable part (9) has a second semi-circular groove (902) on the side away from the first semi-circular groove (802). When the first movable part (8) and the second movable part (9) are stacked, the first semi-circular groove (802) and the second semi-circular groove (902) are misaligned. When the first movable part (8) and the second movable part (9) move in opposite directions to a certain position, the first semi-circular groove (802) and the second semi-circular groove (902) are spliced ​​together to form a splicing hole. The shape of the splicing hole matches the shape of the ink tube (2), and the ink tube (2) can pass through the splicing hole.

4. The push-to-write tool according to claim 3, characterized in that: The valve seat includes a first part (6) and a second part (7), the first part (6) and the second part (7) are stacked together; the first part (6) is provided with a first slide rail (601), and the first movable part (8) is slidably fitted in the first slide rail (601); the second part (7) is provided with a second slide rail (701), and the second movable part (9) is slidably fitted in the second slide rail (701); the first slide rail (601) and the second slide rail (701) are offset, and the first slide rail (601) and the second slide rail (701) partially overlap, and the overlapping part of the first slide rail and the second slide rail is aligned with the through hole and allows the end of the ink tube (2) to pass through.

5. The push-to-write tool according to claim 4, characterized in that: The first split (6) has a first guide groove (603) on its side wall that matches the first drive pin (801), and the first drive pin (801) passes through the first guide groove (603) and protrudes outside the first split (6); the second split (7) has a second guide groove (703) on its side wall that matches the second drive pin (901), and the second drive pin (901) passes through the second guide groove (703) and protrudes outside the second split (7).

6. The push-to-write tool according to claim 5, characterized in that: The pen tip sleeve (5) has two opposing lugs (502) that protrude outward from the two sides of the end face near the end of the pen tip (3). Each of the two lugs (502) is provided with a first drive rail (503) and a second drive rail (504). The valve seat is located between the two lugs (502). The two side walls of the first split body (6) are provided with a first guide groove (603). The two side walls of the first movable part (8) are provided with a first drive pin (801). The drive pins pass through the two first guide grooves (603) one by one and then slide in the first drive rails (503) of the two lugs (502) one by one; the second split (7) is provided with second guide grooves (703) on both sides, and the second movable part (9) is provided with second drive pins (901) on both sides. The two second drive pins pass through the two second guide grooves (703) one by one and then slide in the second drive rails (504) of the two lugs (502) one by one.

7. The push-to-write tool according to claim 6, characterized in that: The pen holder (1) has a pad (102) at the end near the core outlet (101), and the shape of the pad (102) matches the shape of the valve seat; a space (103) is provided between the two side walls of the pad (102) and the inner wall of the pen holder (1), and the space (103) allows the lug (502) to be inserted.

8. The push-to-write instrument according to any one of claims 1 to 7, characterized in that: The ink tube (2) has a limiting step (202) on its side wall, and an elastic element is provided between the limiting step (202) and the valve seat.

9. The push-to-write tool according to claim 8, characterized in that: The elastic element is a spring (10), which is sleeved on the outside of the ink tube (2). One end of the spring (10) abuts against the limiting step (202), and the other end of the spring (10) abuts against the end face of the valve seat.

10. The press-type writing tool according to claim 8, characterized in that: The ink tube (2) has a slider (201) on its side wall, and the pen tip sleeve (5) has a matching hole (501) on its side wall. The slider (201) is slidably fitted in the matching hole (501).

11. The push-to-write tool according to claim 8, characterized in that: The ink tube (2) is provided with a sealing element (203) on its side wall. The edge of the sealing element (203) abuts against the inner wall of the pen holder (1). The sealing element (203) can seal the gap between the ink tube (2) and the pen holder (1).

12. The push-to-write tool according to claim 1, characterized in that: A locking structure is provided between the end of the ink tube (2) away from the pen tip (3) and the end of the pen barrel (1) away from the core outlet (101).

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