A push-to-write tool

Abstract

This invention discloses a press-type writing instrument, comprising a pen holder (1) with a lead outlet hole (101), wherein the pen holder (1) contains a lead assembly; the lead assembly includes an ink tube (2), and a pen tip (3) is provided at the end of the ink tube (2) near the lead outlet hole (101); characterized in that: an opening and closing door assembly is provided at the end of the pen holder (1) near the lead outlet hole (101), and the end of the ink tube (2) and the pen tip (3) are housed within the opening and closing door assembly; when the lead is pressed out, the opening and closing door of the opening and closing door assembly can be opened, and the pen tip (3) can pass through the opening and closing door and extend outside the lead outlet hole (101). This press-type writing instrument 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.

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 requires two hands, which 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-to-write tool with the following structure: a pen holder with a lead outlet hole, wherein a lead assembly is provided inside the pen holder; the lead assembly includes an ink tube, and a pen tip is provided at the end of the ink tube near the lead outlet hole; an opening and closing door assembly is provided inside the end of the pen holder near the lead outlet hole, and the end of the ink tube and the pen tip are housed in the opening and closing door assembly; when the lead is pushed out, the opening and closing door of the opening and closing door assembly can be opened, and the pen tip can pass through the opening and closing door and extend to the outside of 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 pen barrel of this invention has an opening and closing door assembly located at the end near the lead outlet, and the end of the ink tube and the pen tip are housed within this assembly, the opening and closing door assembly can cover the pen tip when the writing instrument is not in use, effectively preventing the pen tip from drying out. When the lead is pressed out, the opening and closing door of the assembly can open, allowing the pen tip to pass through the opening and closing door and extend out of the lead outlet, making it very convenient to use. This press-type writing instrument eliminates the need to insert or remove the pen cap during use, while also sealing the pen tip, making it very convenient to use and effectively preventing the pen tip from drying out.

[0007] As an improvement, the opening and closing door assembly further includes a linkage component. The opening and closing door comprises two oppositely arranged door bodies, and the linkage component is connected to the two door bodies and can drive the two door bodies to open or close. When the two door bodies are closed, they form a pen cap shape and fit over the end of the ink tube and the pen tip. When the two door bodies are open, a space is formed in the middle that allows the pen tip and ink tube to pass through. With this structure, the opening and closing door assembly is simple in structure, easy to assemble, and has good anti-drying effect.

[0008] As an improvement, the linkage is a tubular structure with openings at both ends. The linkage is sleeved outside the ink tube and can move back and forth along the length of the pen tube. The opening / closing gate is installed inside the linkage. When the linkage moves towards the core outlet, it drives the opening / closing gate to open; when the linkage moves away from the core outlet, it drives the opening / closing gate to close. With this structure, the installation between the linkage and the ink tube is simple and assembly is convenient.

[0009] As an improvement, both door panels are equipped with sliders, and tracks are provided on both sides of the sidewall of the linkage component. The sliders on the two door panels slide and engage with the tracks on both sides in a one-to-one correspondence. A first return elastic element is provided between the end of the linkage component away from the core outlet hole and the ends of the two door panels. With this structure, the door panels and the linkage component are driven by tracks, which is simple in structure, easy to assemble, and has a good driving effect; the first return elastic element helps the linkage component return to its original position.

[0010] As an improvement, both door panels are equipped with sliders, and tracks are provided on both sides of the sidewall of the linkage component. The sliders on the two door panels slide and engage with the tracks on both sides in a one-to-one correspondence. A connecting structure is provided between the linkage component and the ink tube, allowing the ink tube to drive the linkage component to move up and down. With this structure, the door panels and the linkage component are driven by tracks, resulting in a simple structure, convenient assembly, and good driving effect. The connecting structure between the linkage component and the ink tube allows the ink tube to drive the linkage component to move up and down, thereby enabling the linkage component to drive the door panels to open and close.

[0011] As an improvement, the linkage component is provided with a slot, and the outer wall of the ink tube is provided with a locking block. The locking block is located above the slot, and the slot and the locking block form the connecting structure. After the ink tube moves downward a certain distance, the locking block engages in the slot. After the ink tube moves upward, driving the linkage component to move a certain distance, the locking block disengages from the slot. With this structure, the connecting structure consists of a slot and a locking block, which is simple in structure and has a better driving effect.

[0012] As an improvement, the upper end of the linkage component is provided with a protruding neck, and the slot is provided on the side wall of the protruding neck. With this structure, the slot design is simple and easy to manufacture.

[0013] As an improvement, a notch is provided on the side wall of the protruding neck to form the slot, and a locking point is provided on the side wall of the slot. A first guide surface is provided on the upper side of the locking point, and a second guide surface is provided on the lower side of the locking point. A protrusion is provided on the side of the locking block near the locking point. The protrusion can be inserted into the slot along the first guide surface, and the protrusion can be disengaged from the slot along the second guide surface. With this structure, the locking structure of the slot and the locking block is simple, and the locking block can be inserted into or disengaged from the slot more flexibly due to the action of the first and second guide surfaces.

[0014] As an improvement, a second return elastic element is provided between the outer end face of the linkage component away from the core outlet and the outer side wall of the ink tube. With this structure, the second return elastic element can assist the ink tube in returning to its original position.

[0015] As an improvement, a first limiting member is provided at the end of the pen holder near the core outlet hole, and a channel is provided on the side wall of the linkage member; when the linkage member moves towards the core outlet hole, the first limiting member can extend into the channel and abut against the end face of one end of the two doors. With this structure, when the core is pressed out, when the door abuts against the first limiting member, the linkage member continues to move, which drives the two doors to open.

[0016] As an improvement, a second limiting member is provided on the inner wall of the pen holder near the other end of the door. A clearance groove matching the second limiting member is provided on the side wall of the linkage member, and the clearance groove is connected to the channel. When the linkage member moves away from the core outlet hole, the second limiting member can extend into the channel through the clearance groove and abut against the end faces of the two doors at the other end. With this structure, when the pen tip retracts, when the door abuts against the second limiting member, the continued movement of the linkage member can drive the two doors to close.

[0017] As an improvement, the sidewall of the linkage component is provided with channels on both sides near the two doors, and the width of the channels is not less than the width of the doors. When the two doors are opened, the outer sides of the two doors can extend into the two channels one by one. With this structure, the movement of the doors is not limited by the width of the linkage component, which can control the volume of the linkage component without affecting the sliding stroke of the doors, so that sufficient space can be left for the pen tip to pass through when the doors are opened.

[0018] As an improvement, through holes are provided on both sides of the pen holder at positions corresponding to the channels on both sides of the linkage. When the two doors are opened, the outer sides of the two doors extend through the corresponding channels into the corresponding through holes, and the outer sides of the doors are joined with the pen holder to form a complete pen holder sidewall. With this structure, the width of the pen holder does not restrict the sliding of the doors, allowing sufficient space for the pen tip to pass through when the doors are opened; at the same time, after the lead is ejected, the outer sides of the doors are joined with the pen holder to form a complete pen holder sidewall, which does not affect the feel of holding the pen.

[0019] As an improvement, the inner wall of the pen holder is provided with a protrusion, and the outer wall of the linkage is provided with a guide groove, with the protrusion slidingly engaged within the guide groove. With this structure, the protrusion and guide groove can limit the sliding direction of the linkage.

[0020] As an improvement, the tracks on both sides of the linkage are inclined, and the extension lines of the tracks on both sides intersect to form a "V" shape. This structure is simple and provides better linkage performance.

[0021] As an improvement, a limiting member is provided on the outer wall of the end of the ink tube, and the limiting member is limited within the cavity formed by the opening / closing door and the linkage member. With this structure, the opening / closing door assembly can be connected to the end of the ink tube by the limiting member.

[0022] As an improvement, a pen clip is provided on the outer wall of the upper end of the pen holder, and a through hole is provided on the side wall of the pen holder near the pen clip. A locking structure is provided between the ink tube and the pen clip; the locking structure can lock the ink tube and pen clip when the pen tip protrudes from the lead-out hole or is housed in the opening and closing door assembly. With this structure, the locking structure can lock the ink tube and pen clip when the pen tip protrudes from the lead-out hole or is housed in the opening and closing door assembly, and the structure is simple. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the press-type writing tool (pen tip extended state) according to Embodiment 1 of the present invention.

[0024] Figure 2 This is an exploded structural diagram of the push-to-write tool according to Embodiment 1 of the present invention.

[0025] Figure 3 This is an exploded structural diagram of the opening and closing door assembly of the push-to-write tool according to Embodiment 1 of the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the linkage component of the push-type writing tool according to Embodiment 1 of the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the pen holder of the push-to-write tool according to Embodiment 1 of the present invention.

[0028] Figure 6 This is a three-dimensional structural diagram of the pen holder of the push-to-write tool according to Embodiment 1 of the present invention from another angle.

[0029] Figure 7 This is a three-dimensional structural diagram of the ink tube of the push-to-write tool according to Embodiment 1 of the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram of the press-type writing tool (pen tip retracted state) according to Embodiment 1 of the present invention.

[0031] Figure 9 This is a three-dimensional structural diagram of the push-type writing tool according to Embodiment 2 of the present invention.

[0032] Figure 10 This is an exploded structural diagram of the push-to-write tool according to Embodiment 2 of the present invention.

[0033] Figure 11 for Figure 10 A magnified structural diagram of part A in the middle.

[0034] The figure shows: 1. Pen holder, 101. Core outlet hole, 102. First limiting component, 103. Second limiting component, 104. Through hole, 105. Protrusion, 2. Ink tube, 201. Limiting step, 202. Third limiting component, 3. Pen tip, 4. Linkage component, 401. Track, 402. Channel, 403. Clearance groove, 404. Guide groove, 405. Protruding neck, 5. Door body, 501. Slider, 6. First return elastic component, 7. Second return elastic component, 8. Pen clip, 9. Slot, 901. Locking point, 902. First guide surface, 903. Second guide surface, 10. Locking block, 1001. Protrusion. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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. Example

[0038] like Figures 1 to 2 As shown in the figure, this specific embodiment discloses a press-type writing tool, including a pen holder 1, a pen refill assembly, and an opening and closing door assembly.

[0039] 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.

[0040] like Figures 3 to 7 As shown, the pen holder 1 has an opening at its upper end and a lead outlet hole 101 at its lower end. The pen lead assembly includes an ink tube 2 and a pen tip 3, with the pen tip 3 tightly fitted inside the lower end opening 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, with its upper end being a closed end and protruding outside the upper end of the pen holder 1.

[0041] The lower end of the pen holder 1 is equipped with an opening and closing door assembly, which includes a linkage 4, two opposing door bodies 5, and a first return elastic member 6. The linkage 4 is a tubular structure with openings at both ends. The linkage 4 is fitted over the ink tube 2 and can move back and forth along the length of the pen holder 1. The two door bodies 5 are installed inside the linkage 4. When the two door bodies 5 are closed, they form a pen sleeve shape that covers the end of the ink tube 2 and the pen tip 3, thus preventing the pen tip 3 from drying out.

[0042] The two door bodies 5 are connected to the linkage 4, which drives the two door bodies 5 to open or close via a track 401 structure. Each door body 5 is equipped with a slider 501, and the linkage 4 has tracks 401 on both sides of its sidewall. In this specific embodiment, each door body 5 has sliders 501 at both the top and bottom ends of its sides, meaning each door body 5 has four sliders 501. Correspondingly, the linkage 4 has four tracks 401 on its sidewalls. The sliders 501 on the two door bodies 5 slide and engage with the tracks 401 on the linkage 4 in a one-to-one correspondence. The tracks 401 are inclined, and the extensions of adjacent tracks 401 intersect to form a "V" shape. The first return elastic element 6 is a first return spring, which is elliptical in shape. This first return spring is sleeved around the end of the ink tube 2, with its two ends resting against the upper end of the linkage 4 and between the upper surfaces of the two door bodies 5, respectively. Under the action of the first return spring, the linkage 4 can return to its original position. When the linkage 4 is forced downwards (i.e., moves towards the core outlet 101), it can drive the opening and closing door to open. When the linkage 4 is rebounded upwards by the first return elastic element (i.e., moves away from the core outlet 101), it can drive the opening and closing door to close.

[0043] A second return elastic element 7, which is a second return spring, is provided between the upper end face of the linkage 4 and the outer wall of the ink tube 2. The second return spring is sleeved on the outside of the ink tube 2. A limiting step 201 is provided on the outer wall of the ink tube 2, and the two ends of the second return spring abut against the limiting step 201 and the upper end face of the linkage 4, respectively. With this structure, downward movement of the ink tube 2 can push the linkage 4 downward.

[0044] The pen holder 1 has a first limiting member 102 on its lower inner wall. In this specific embodiment, there are two first limiting members 102, and their positions correspond to the positions of the two door bodies 5. The linkage 4 has a channel 402 on its side wall, and the channel 402 has a downward opening. There are also two channels 402, and their positions correspond to the positions of the two first limiting members 102. When the linkage 4 moves downward, the two first limiting members 102 can extend into the channel 402 and partially abut against the lower end faces of the two door bodies 5. Then, as the linkage 4 continues to move downward, the two door bodies 5 will be opened.

[0045] The pen holder 1 has a second limiting member 103 on its inner wall near the upper end of the door body 5. In this specific embodiment, there are two second limiting members 103, and their positions correspond to the positions of the two door bodies 5. The upper side wall of the linkage member 4 has two clearance grooves 403 that match the second limiting members 103. The two clearance grooves 403 are connected to the two channels 402 one-to-one. When the linkage member 4 moves upward, the two second limiting members 103 can pass through the corresponding clearance grooves and abut against the upper end faces of the two door bodies 5 respectively. Then, the linkage member 4 continues to move upward, and the two door bodies 5 will close.

[0046] The width of the channel 402 is not less than the width of the door 5; when both doors 5 are opened, the outer sides of the two doors 5 can extend into the two channels 402 one by one. Both sides of the pen holder 1 are provided with through holes 104 at positions corresponding to the channels 402 on both sides of the linkage 4. When both doors 5 are opened, the outer sides of the two doors 5 pass through the corresponding channels 402 and extend into the corresponding through holes 104. The outer sides of the doors 5 are joined with the pen holder 1 to form a complete sidewall of the pen holder 1.

[0047] The inner wall of the pen holder 1 is provided with a protrusion 105, and the outer wall of the linkage 4 is provided with a guide groove 404. The guide groove 404 is located between two adjacent tracks 401. In this specific embodiment, there are two protrusions 105, and correspondingly, there are also two guide grooves 404. The two protrusions 105 slide in the two guide grooves 404 in a one-to-one correspondence. The outer wall of the end of the ink tube 2 is provided with a third limiting member 202, which limits the opening and closing door and the linkage 4 to the cavity formed by the opening and closing door and the linkage 4.

[0048] The pen holder 1 is detachably connected to a pen clip 8 at its upper end. A through hole 104 is provided on the side wall of the pen holder 1 near the pen clip 8. A locking structure is provided between the ink tube 2 and the pen clip 8. The locking structure between the pen clip 8 and the ink tube 2 in a push-button writing instrument is existing technology and will not be described in detail here; many locking structures on the market are applicable.

[0049] like Figure 8As shown, in the present application, when using a press-type writing instrument, pressing down on the upper end of the ink tube 2 causes the ink tube 2 to move downwards, simultaneously pushing the linkage 4 downwards. When the lower ends of the two gates 5 respectively abut against the corresponding first limiting members 102, the linkage 4 continues to move downwards under the push of the ink tube 2, thus slowly opening the gates 5 and forming a space between the two gates 5 that allows the pen tip 3 to pass through. The pen tip 3 and the lower end of the ink tube 2 pass through the space between the two gates 5 and the lead outlet hole 101 and are exposed outside the lead outlet hole 101. The pen clip 8 locks the ink tube 2, and the press-type writing instrument can then be used for writing. Pressing the upper end of ink tube 2 again causes it to move downwards, unlocking the locking structure. The second and first return springs then return ink tube 2 and linkage 4 to their original positions. During this return process, when the upper ends of the two doors 5 abut against the corresponding second limiters 103, linkage 4 continues to spring back, slowly closing the doors 5. When ink tube 2 and linkage 4 return to their initial state, the two doors 5 are closed, with the lower end of ink tube 2 and pen tip 3 housed within the cavity formed by the two doors 5. At this point, the locking structure limits the movement of ink tube 2. Example

[0050] like Figures 9 to 11 As shown, this specific embodiment discloses a press-type writing tool. The press-type writing tool of this specific embodiment differs from that of Embodiment 1 in the following ways: In Embodiment 1, a first return elastic member 6 is provided between the end of the linkage 4 away from the core outlet 101 and the ends of the two door bodies 5. The linkage 4 returns to its original position due to the elastic action of the first return elastic member 6. In this specific embodiment, the structure of the first return elastic member 6 is omitted. A connecting structure is provided between the linkage 4 and the ink tube 2, allowing the ink tube 2 to drive the linkage 4 to move up and down.

[0051] The connecting structure includes a slot 9 and a block 10. The slot 9 is located on the linkage component, and the block 10 is located on the outer wall of the ink tube. The upper end of the linkage component has a protruding neck 405, and the side wall of the protruding neck 405 has a notch forming the slot 9. Each of the opposite side walls of the slot 9 has a locking point 901. The upper side of the locking point 901 has a first guide surface 902, and the lower side of the locking point 901 has a second guide surface 903. A distance is provided between the locking point 901 and the bottom of the slot 9 for the block 10 to move vertically. Each of the opposite side walls of the block 10 has a protrusion 1001. When the ink tube moves downwards, it initially pushes the linkage component downwards. When the linkage component is unable to move downwards against the inner wall of the pen holder, the protrusions 1001 on both sides can engage with the corresponding slots 9 along the corresponding first guide surfaces 902. When the ink tube moves upward, the protrusion 1001 initially slides within the slot 9. Once the protrusion 1001 contacts the locking point 901, the ink tube drives the linkage component to move upward together. When both doors are fully closed, the second limiting component also limits the linkage component, preventing it from moving further upward. At this point, the protrusion 1001 can disengage from the slot 9 along the second guide surface 903, disengaging the linkage component from the ink tube.

[0052] In this specific embodiment, the protruding neck 405 has slots 9 on both sides of its sidewall, and the ink tube has blocks 10 on both sides of its outer wall. The blocks 10 are respectively engaged with the slots 9 on both sides. In this structure, the protruding neck 405 is divided into two halves by the slots 9 on both sides, and the two halves of the sidewall have a certain elasticity under force, making the engagement of the slots 9 and blocks 10 more flexible.

Claims

1. A push-button writing instrument, comprising a pen holder (1) with a lead outlet (101), wherein the pen holder (1) contains a lead assembly; the lead assembly includes an ink tube (2), and the end of the ink tube (2) near the lead outlet (101) is provided with a pen tip (3); characterized in that: The pen holder (1) is provided with an opening and closing door assembly at the end near the core outlet hole (101), and the end of the ink tube (2) and the pen tip (3) are housed in the opening and closing door assembly; when the core is pressed out, the opening and closing door of the opening and closing door assembly can be opened, and the pen tip (3) can pass through the opening and closing door and extend to the outside of the core outlet hole (101). The opening and closing door assembly also includes a linkage (4). The opening and closing door includes two door bodies (5) arranged opposite to each other. The linkage (4) is connected to the two door bodies (5) and the linkage (4) can drive the two door bodies (5) to open or close. When the two door bodies (5) are closed, they form a pen cap shape and are fitted over the end of the ink tube (2) and the pen tip (3). When the two door bodies (5) are open, a space is formed in the middle that allows the pen tip (3) and the ink tube (2) to pass through. Each of the two door bodies is provided with a slider. The two sides of the side wall of the linkage are provided with rails. The sliders on the two door bodies slide and cooperate with the rails on both sides.

2. The push-to-write tool according to claim 1, characterized in that: The linkage (4) is a tubular structure with openings at both ends. The linkage (4) is sleeved outside the ink tube (2) and can move back and forth along the length of the pen holder (1). The opening and closing door is installed inside the linkage (4). When the linkage (4) moves toward the core outlet (101), it can drive the opening and closing door to open. When the linkage (4) moves away from the core outlet (101), it can drive the opening and closing door to close.

3. The push-to-write tool according to claim 2, characterized in that: A first return elastic element (6) is provided between the end of the linkage (4) away from the core outlet (101) and the ends of the two door bodies (5).

4. The push-to-write tool according to claim 2, characterized in that: Both of the door bodies (5) are provided with sliders (501), and both sides of the side wall of the linkage (4) are provided with tracks (401). The sliders (501) on the two door bodies (5) slide and cooperate with the tracks (401) on both sides in a one-to-one correspondence. The linkage (4) and the ink tube (2) are provided with a connecting structure, and the ink tube (2) can drive the linkage (4) to move up and down.

5. The push-to-write tool according to claim 4, characterized in that: The linkage component is provided with a slot (9), and the outer wall of the ink tube is provided with a block (10). The block (10) is located on the upper side of the slot (9). The slot (9) and the block (10) form the linkage structure. After the ink tube (2) moves downward a certain distance, the block (10) is inserted into the slot (9). After the ink tube (2) moves upward and drives the linkage component (4) to move a certain distance, the block (10) disengages from the slot (9).

6. The push-to-write tool according to claim 5, characterized in that: The upper end of the linkage component (4) is provided with a protruding neck (405), and the slot (9) is provided on the side wall of the protruding neck (405).

7. The push-to-write tool according to claim 6, characterized in that: The protruding neck (405) has a notch on its sidewall to form the slot (9), and the slot (9) has a locking point (901) on its sidewall. The upper side of the locking point (901) has a first guide surface (902), and the lower side of the locking point (901) has a second guide surface (903). The locking block (10) has a protrusion (1001) on the side near the locking point (901). The protrusion (1001) can be inserted into the slot (9) along the first guide surface (902), and the protrusion (1001) can be disengaged from the slot (9) along the second guide surface (903).

8. The press-type writing tool according to claim 2, characterized in that: A second return elastic element (7) is provided between the outer end face of the linkage (4) away from the core outlet (101) and the outer side wall of the ink tube (2).

9. The push-to-write instrument according to any one of claims 3 or 7, characterized in that: The pen holder (1) is provided with a first limiting member (102) at the end near the core outlet hole (101), and the linkage member (4) is provided with a channel (402) on its side wall; when the linkage member (4) moves toward the core outlet hole (101), the first limiting member (102) can extend into the channel (402) and abut against the end face of one end of the two door bodies (5).

10. The push-to-write tool according to claim 9, characterized in that: The pen holder (1) is provided with a second limiting member (103) on the inner wall near the other end of the door body (5). The side wall of the linkage member (4) is provided with a relief groove (403) that matches the second limiting member (103). The relief groove (403) is connected to the channel (402). When the linkage member (4) moves away from the core outlet (101), the second limiting member (103) can extend into the channel (402) through the relief groove (403) and abut against the end face of the other end of the two doors (5).

11. The push-to-write tool according to claim 9, characterized in that: The linkage component (4) has a channel (402) on both sides of the side wall near the two doors (5), and the width of the channel (402) is not less than the width of the door (5).

12. The push-to-write tool according to claim 11, characterized in that: The pen holder (1) has through holes (104) at positions corresponding to the channels (402) on both sides of the linkage (4). When the two doors (5) are opened, the outer sides of the two doors (5) pass through the corresponding channels (402) and extend into the corresponding through holes (104). The outer sides of the doors (5) are spliced ​​with the pen holder (1) to form a complete side wall of the pen holder (1).

13. The press-type writing tool according to claim 3, characterized in that: The inner wall of the pen holder (1) is provided with a protrusion (105), and the outer wall of the linkage (4) is provided with a guide groove (404). The protrusion (105) is slidably fitted in the guide groove (404).

14. The push-to-write instrument according to any one of claims 3 or 7, characterized in that: The tracks (401) on both sides of the linkage (4) are inclined, and the extension lines of the tracks (401) on both sides intersect to form a "V".

15. The push-to-write tool according to claim 1, characterized in that: The outer wall of the end of the ink tube (2) is provided with a third limiting member (202), which is limited within the cavity formed by the opening and closing door and the linkage member (4).

16. The push-to-write tool according to claim 1, characterized in that: The upper outer wall of the pen holder (1) is provided with a pen clip (8), and the side wall of the pen holder (1) near the pen clip (8) is provided with a through hole (104). A locking structure is provided between the ink tube (2) and the pen clip (8). When the pen tip (3) extends out of the core outlet hole (101) or is housed in the opening and closing door assembly, the locking structure can lock the ink tube (2) and the pen clip (8).

Images