A push-type writing tool

Abstract

The invention discloses a push-type writing tool. A linkage part and a guide structure are arranged between a pen core and a pen barrel. The cooperation of the linkage part and the guide structure enables the pen core to be extended and retracted relative to the pen barrel. Both the linkage part and the guide structure are located in the circumferential direction of the pen core and do not occupy the axial installation space of the pen core. A linkage part that cooperates with the guide structure in circumferential rotation is arranged. The push part of the pen core is pressed to eject the pen core. The linkage part and the guide structure move relative to each other to an axial limit position, so that the pen core cannot move upward relative to the pen barrel and the ejection of the pen core is locked. The push part is pressed again to release the limit position of the linkage part and the guide structure. Under the action of a reset elastic part, the linkage part continues to move relative to the guide structure to reset, so that the pen core is retracted. The cooperation of the linkage part and the guide structure enables the pen core to be extended and retracted. The push-type writing tool discloses a push-type writing tool.

Description

Technical Field

[0001] The present invention relates to the technical field of writing tools, and more specifically to a push-type writing tool. Background Art

[0002] The click pen is popular among consumers because the pen head can be freely extended and retracted, and it is convenient to use or carry. The structure of the click pen generally includes: a pen holder, a refill located in the pen holder, a spring sleeved on the outer end of the pen head of the refill, a rotating wheel located at the upper end of the refill, a click wheel located at the upper end of the rotating wheel and meshed with the rotating wheel, and a sliding groove provided on the inner wall of the pen holder cylinder for the click wheel to move upward and downward. For example, the utility model patent with publication number: CN201849088U discloses a ballpoint pen with a hidden push spring, one end of the pen neck is threadedly connected to the tip sleeve, and the other end is fixed to a pen holder with a pen clip. A guide sleeve is also fixed to the pen holder, and the guide sleeve is a cylinder with a spacer ring on the inner wall, and two or more guide ribs extend from the spacer ring. A push wheel and a rotating wheel are installed in sequence in the guide sleeve, and the push wheel is sleeved on the rotating wheel. The rotating wheel has guide teeth corresponding to the guide ribs, and there are guide grooves between the guide teeth that match the gap with the guide ribs. The push wheel also has guide teeth and guide grooves corresponding to the rotating wheel. One end of the push wheel with an external thread passes through the spacer ring in the guide sleeve and is threadedly connected to a push cap; the pen core passes through the pen neck and the pen holder and is installed in the rotating wheel. It is characterized in that a rotating wheel spring is installed between the rotating wheel and the spacer ring of the guide sleeve and is fixed in the guide sleeve with a positioning plug, and a push cap spring is installed between the spacer ring and the push cap. The hidden spring ballpoint pen provided by the technical solution uses many parts and is difficult to assemble. In addition, the pen core is located at the lower end of the rotating wheel, and the rotating wheel occupies the installation space of the pen core, making the pen core shorter and the ink content in the pen core relatively small. The existing press-action pen solves the problem of the rotary press structure occupying the installation space of the pen core by setting a press structure relying on the pen clip. The present invention provides a press-action pen that neither occupies the installation space of the pen core nor relies on the pen clip. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a push-type writing tool, which enables the pen core to slide and retract relative to the pen shaft through the cooperation of a linkage part and a guide structure. The linkage part and the guide structure are both located in the circumferential direction of the pen core, without occupying the axial installation space of the pen core, and does not rely on a pen clip, so the production and installation are simple.

[0004] The present invention provides a push-type writing tool, comprising a pen holder and a pen core, a reset elastic member being installed on the pen core, a linkage part and a first guide structure being arranged between the pen holder and the pen core, the first guide structure being circumferentially rotated with the linkage part, one end of the pen core being connected with a push part, when the push part moves downward causing the linkage part and the first guide structure to move relative to each other to an axial limit, the pen core is locked out, when the push part moves downward again, the linkage part and the first guide structure are released from the limit, the linkage part is reset by the reset elastic member moving upward, so that the pen core is returned.

[0005] In the present technical scheme, the pen core is installed in the pen barrel, and a linkage part and a first guide structure are arranged between the pen core and the pen barrel. The cooperation between the linkage part and the first guide structure makes the pen core extend and retract relative to the pen barrel. The linkage part and the first guide structure are both located in the circumferential direction of the pen core and do not occupy the axial installation space of the pen core. When the pen core needs to be ejected, the user presses the pressing part to make the pen core move downward, and the linkage part is subjected to the pressing force and moves relative to the first guide structure. When the linkage part moves to the axial limit with the first guide structure, the pen core cannot move upward relative to the pen barrel, and the pen core is locked when it is ejected. When the pen core needs to be refilled, the user presses the pressing part again to make the pen core move downward, and the linkage part is subjected to the pressing force and the limit with the first guide structure is released. Moreover, under the upward force of the resetting elastic member, the linkage part and the first guide structure can continue to move relative to each other until the linkage part and the first guide structure are separated, and the pen core can move upward relative to the pen barrel, and the pen core is refilled at this time.

[0006] As an improvement, the first guide structure includes a first inclined section and a second inclined section distributed up and down. When the pressing part moves downward, causing the linkage part and the first inclined section to move relative to each other to the first stage, the linkage part moves relative to the second inclined section to the second stage under the action of the reset elastic member, so that the linkage part is axially limited and the lead is locked. When the pressing part moves downward again, the linkage part and the second inclined section move relative to each other until they are separated from the first guide structure. The linkage part and the first guide structure are reset by the action of the reset elastic member, so that the lead is returned.

[0007] In the present technical solution, when the pressing part moves downward under the pressing force, the pen core moves downward relative to the pen barrel, the linkage part and the first inclined section move relative to each other to the first stage, and under the axial limiting action of the linkage part and the first inclined section, the pen core cannot continue to move downward relative to the pen barrel, at this time, the user releases the pressing part, and the linkage part moves relative to the second inclined section under the upward elastic force of the reset elastic member, and the linkage part and the second inclined section move relative to each other to the second stage, and under the axial limiting action of the linkage part and the second inclined section, the pen core cannot continue to move upward relative to the pen barrel, and the pen core is in a core-out locking state, at this time, the user can use it normally and the pen core will not return to the core; when the pressing part moves downward again under the pressing force, the pen core moves downward relative to the pen barrel, so that the second inclined section of the linkage part releases the axial limiting action, and under the upward elastic force of the reset elastic member, the linkage part and the first inclined section move relative to each other until they are separated from the first guide structure, and the pen core can be reset upward relative to the pen barrel, so that the pen core returns to the core.

[0008] As an improvement, the first inclined section is provided with a first limiting portion, and the second inclined section is provided with a second limiting portion. The first limiting portion and the second limiting portion are staggered. When the linkage portion moves along the first inclined section to the first limiting portion, the pen core cannot move downward relative to the pen shaft. When the linkage portion moves relative to the second inclined section to the second limiting portion through the action of the reset elastic member, the pen core cannot move upward relative to the pen shaft.

[0009] In the present technical scheme, by setting the first limiting part and the second limiting part to be staggered, when the linkage part and the first inclined section move relative to each other, the linkage part rotates relative to the first guide structure, and the linkage part first moves along the first inclined section to the first limiting part, and the linkage part and the first limiting part abut to achieve axial limiting. This is the first stage. Under the action of the axial limiting, the pen core cannot move downward relative to the pen barrel. When the linkage part and the second inclined section move relative to each other under the action of the reset elastic member, the linkage part continues to rotate relative to the first guide structure, and the linkage part moves along the second inclined section to the second limiting part, and the linkage part and the second limiting part abut to achieve axial limiting. This is the second stage. Under the action of the axial limiting, the pen core cannot move upward relative to the pen barrel. Under the action of the pressing force, the linkage part and the second limiting part are disengaged from the limiting part to release the limiting. The linkage part and the first inclined section move relative to each other, and the linkage part continues to rotate relative to the first guide structure, so that the linkage part passes over the second limiting part. At this time, the user releases the pressing part, and under the action of the elastic reset member, the pen core moves upward relative to the pen barrel and resets.

[0010] As an improvement, a first protrusion is provided at one end of the linkage portion, and a second protrusion is provided at the other end of the linkage portion, the first protrusion is adapted to the first inclined section, and the second protrusion is adapted to the second inclined section.

[0011] In the technical solution, a first protrusion and a second protrusion are arranged on the linkage part, and the linkage part realizes circumferential rotation by the cooperation between the first protrusion and the first inclined section and the cooperation between the second protrusion and the second inclined section. When the first protrusion and the first inclined section move relative to each other, the linkage part rotates relative to the first guide structure, and the first protrusion first reaches the first limiting part, and the first protrusion and the first limiting part abut against each other to realize axial limiting. At this time, it is the first stage, and the pen core cannot move downward relative to the pen shaft. When the second protrusion and the second inclined section move relative to each other, the first protrusion disengages from the first limiting part, and the linkage part rotates relative to the first guide structure, and the second protrusion reaches the second limiting part. In the limiting portion, the second protrusion abuts against the second limiting portion to achieve axial limiting, which is the second stage. The pen core cannot move upward relative to the pen shaft. Under the action of pressing force, the second protrusion disengages from the second limiting portion, and the first protrusion and the first inclined section can move relative to each other. The linkage portion continues to rotate relative to the first guide structure, so that the second protrusion passes over the second limiting portion. The user releases the pressing portion, and under the action of the reset elastic member, the second protrusion abuts against the second inclined section and moves relative to the second inclined section, so that the linkage portion continues to rotate relative to the first guide structure, and the pen core moves upward relative to the pen shaft under the action of the reset elastic member and resets.

[0012] As an improvement, the first protrusion and the second protrusion are staggered in an up-and-down manner, and at least one of the first protrusion and the second protrusion is provided.

[0013] In the present technical solution, the first inclined section and the second inclined section are distributed up and down, and the first protrusion and the second protrusion are arranged to be distributed up and down to adapt to the first guide structure, and the first protrusion and the second protrusion are arranged to be staggered. The first protrusion cooperates with the first limiting portion before the second protrusion cooperates with the second limiting portion, and the circumferential rotation cooperation between the linkage portion and the first guide structure is smoother.

[0014] As an improvement, a second guide structure is further provided between the pen core and the pen shaft, the second guide structure is axially slidably matched with the second protrusion, the linkage part moves relative to the second guide structure through the second protrusion, and one end of the second guide structure is connected to the second inclined section.

[0015] In the present technical solution, the linkage part cooperates with the second guide structure through the second protrusion, so that the pen core and the pen shaft can realize axial sliding, and the stroke of the axial sliding is increased. The user presses the pressing part to make the linkage part slide relative to the second guide structure. When the second protrusion slides to the end where the second guide structure is connected to the second inclined section, the first protrusion is connected to the first inclined section, and under the action of the pressing force, the first protrusion and the first inclined section move relative to the first limiting part. The user releases the pressing part, and under the upward elastic force of the reset elastic member, the second protrusion is connected to the second inclined section, and the second protrusion and the second inclined section move relative to the second limiting part to realize the core-out locking. When the core needs to be returned, the user presses the pressing part again to make the second protrusion When the pen is disengaged from the second limiting portion, the first protrusion is connected to the first inclined section and moves relative to the first inclined section, so that the second protrusion passes over the second limiting portion. The user releases the pressing portion, and under the upward elastic force of the resetting elastic member, the second protrusion is connected to the second inclined section and moves relative to the second inclined section until it is disengaged from the first guide structure. Since one end of the second guide structure is connected to the second inclined section, the second protrusion can move relative to the second inclined section to the end of the second guide structure. Under the upward elastic force of the resetting elastic member, the second protrusion slides and resets relative to the second guide structure, so that the pen core slides upward and resets relative to the pen shaft, and the pen core returns to the core. Under the cooperation of the second guide structure and the second protrusion, the pen core returns and is more labor-saving.

[0016] As an improvement, the thickness of the first protrusion is smaller than the thickness of the second protrusion, the second protrusion is circumferentially limited within the second guide structure, and the first protrusion and the second guide structure do not interfere with each other.

[0017] More preferably, the thickness of the second guide structure is smaller than the thickness of the first guide structure.

[0018] In the present technical solution, when the second protrusion moves relative to the second inclined section under the action of the reset elastic member to disengage from the first guide structure, since one end of the second guide structure is connected to the second inclined section, the second protrusion can move relative to the second inclined section to the end of the second guide structure. By setting the thickness of the second guide structure to be smaller than the thickness of the first guide structure and the thickness of the first protrusion to be smaller than the thickness of the second protrusion, the first protrusion is not restricted by the second guide structure, and the first protrusion can easily pass through the first guide structure to facilitate the next stroke operation. The structure is cleverly designed and is smooth and labor-saving to use.

[0019] As an improvement, a third guide structure is further provided between the pen core and the pen body, the third guide structure is circumferentially rotated with the linkage part, the thickness of the third guide structure is greater than the thickness of the second guide structure, and the second guide structure is located between the first guide structure and the third guide structure.

[0020] In the present technical scheme, by setting a third guide structure, after the linkage part rotates relative to the first guide structure and passes through the first guide structure, the linkage part and the second guide structure are relatively slid and reset to complete a core-out and core-returning stroke. When the core needs to be out again, under the action of pressing force, the linkage part and the second guide structure are relatively moved to the end where the second guide structure is connected to the first guide structure. The linkage part can be connected to the third guide structure through the second guide structure, so that the linkage part can move relative to the third guide structure, and the linkage part rotates to repeat the core-out and core-returning stroke. The second guide structure is located between the first guide structure and the third guide structure, that is, the second guide structure is provided with at least two, so that after the linkage part rotates relative to the third guide structure and passes through the third guide structure, the linkage part can be relatively slid and reset along another second guide structure to end the stroke. By setting the third guide structure, the rotation stroke of the linkage part can be shortened, making it more labor-saving for users to use.

[0021] As an improvement, the third guide structure includes a third inclined section and a fourth inclined section distributed up and down, the third inclined section is provided with a third limiting portion, and the fourth inclined section is provided with a fourth limiting portion. The third guide structure is connected to one end of the second guide structure through the fourth inclined section. When the linkage part is disengaged from the first guide structure and resets relative to the second guide structure, under the action of pressing force, the linkage part and the second guide structure move relative to each other to the end of the second guide structure connected to the fourth inclined section. The first protrusion passes through the second guide structure to connect the third inclined section, and moves relative to the third inclined section to the third limiting portion, so that the pen core cannot move downward relative to the pen barrel. Under the action of the reset elastic member, the linkage part moves relative to the fourth inclined section to the fourth limiting portion, so that the pen core cannot move upward relative to the pen barrel, and the pen core is locked. Under the action of pressing force, the second protrusion and the fourth limiting portion are released from the limit, and move relative to the fourth inclined section until they are disengaged from the third guide structure. The linkage part and the first guide structure are reset by the action of the reset elastic member, so that the pen core returns to the core.

[0022] In the present technical solution, the cooperation between the linkage part and the third guide structure is the same as the cooperation between the linkage part and the first guide structure. By adding the third guide structure, the stroke of one rotation of the linkage part is shortened, that is, the stroke of the pen core being ejected and retracted is shortened, making it smoother and more labor-saving for users to use.

[0023] As an improvement, at least one of the first guide structure, the second guide structure and the third guide structure is provided, and the first guide structure, the second guide structure and the third guide structure are uniformly distributed in the circumferential direction in sequence.

[0024] In the present technical solution, a single first guide structure, a second guide structure and a third guide structure form a group, and multiple groups are arranged along the circumferential direction to shorten the travel of one rotation of the linkage part, making it easier for users to use and making the structural coordination more reliable.

[0025] As an improvement, the present application may provide a setting scheme of a linkage part and a plurality of guide structures, wherein the linkage part is arranged on the outer wall of the pen core, and the first guide structure, the second guide structure and the third guide structure are all arranged on the inner wall of the pen shaft.

[0026] The linkage part is sleeved with the pen core, the linkage part is provided with an opening, and the linkage part is sleeved on the outer wall of the pen core through the opening.

[0027] In the present technical solution, a linkage part is installed on the outer wall of the pen refill, and a variety of guide structures cooperating with the linkage part are arranged on the inner wall of the pen shaft. The various guide structures and the pen shaft can be an integrated structure or a split structure. The pen refill can slide and retract relative to the pen shaft through the cooperation of the linkage part and the various guide structures to achieve the refill ejection and retraction. An opening is arranged on the linkage part, so that the linkage part can be installed on the pen refill more labor-saving and quick.

[0028] More specifically, the outer wall of the pen core is provided with a fifth limiting portion, the linkage portion is installed in the fifth limiting portion, and the fifth limiting portion is used for axially limiting the linkage portion.

[0029] The fifth limiting portion includes two convex ring structures, which are distributed up and down on the outer wall of the pen core, and the two convex ring structures are respectively matched with the upper and lower ends of the limiting portion in a clearance.

[0030] In the technical solution, a fifth limiting part for fixing the limiting linkage part is arranged on the outer wall of the pen core, the fifth limiting part includes two convex ring structures distributed up and down, the linkage part is inserted into the fifth limiting part through an opening, and the pen core limits the axial sliding of the linkage part through the upper and lower convex ring structures to prevent the linkage part from sliding along the axial direction of the pen core, thereby improving the matching efficiency. In addition, the convex ring structure is simple and occupies less space.

[0031] More specifically, the first guide structure and the third guide structure are both convex block structures arranged on the inner wall of the pen barrel, and the second guide structure is a sliding groove structure arranged on the inner wall of the pen barrel.

[0032] At least two convex ribs are arranged on the inner wall of the pen holder, and the two convex ribs and a part of the inner wall of the pen holder between the two convex ribs constitute the sliding groove structure.

[0033] In the present technical solution, the first guide structure and the second guide structure are set as a protrusion structure, and the second guide structure is a slide groove structure. The various guide structures and the pen holder can be an integrated structure, which simplifies the installation components of the click pen and makes the installation more convenient. The cooperation between the guide structure of the integrated structure and the linkage part is more reliable and smoother. The second guide structure is composed of a convex rib on the inner wall of the pen holder, and the slide groove structure is simple.

[0034] As an improvement, the present application can also provide another setting scheme of the linkage part and multiple guide structures, wherein the linkage part is arranged on the inner wall of the pen barrel, and the first guide structure, the second guide structure and the third guide structure are all arranged on the outer wall of the pen core.

[0035] In the present technical solution, the linkage part is arranged on the inner wall of the pen barrel, the linkage part and the pen barrel can be an integral structure or a split structure, the first guide structure, the second guide structure and the third guide structure are all arranged on the outer wall of the pen core, the various guide structures and the pen core can be an integral structure or a split structure, and the pen core can slide and retract relative to the pen barrel through the cooperation of the various guide structures and the linkage part. The present application provides a combination installation method of various guide structures and linkage parts, and the various guide structures and linkage parts are all located on the circumference of the pen core, do not occupy the installation space of the pen core, and do not rely on the pen clip to achieve the extension and retraction of the pen core.

[0036] As an improvement, the pen holder comprises an upper pen holder and a lower pen holder, the upper pen holder is threadedly connected to the lower pen holder, and the linkage part and the first guide structure are both located in the upper pen holder.

[0037] In the technical solution, the pen holder is provided with an upper pen holder and a lower pen holder which are threadedly connected, a guide structure and a linkage part are provided between the upper pen holder and the pen core, and the lower pen holder is provided with a pen core outlet. The threaded connection is simple and quick to install and the connection is reliable.

[0038] As an improvement, the inner wall of the lower pen shaft is axially provided with guide ribs, the guide ribs comprising a first guide segment and a second guide segment, the first guide segment being located above the second guide segment, the thickness of the first guide segment on the inner wall of the lower pen shaft being smaller than the thickness of the second guide segment on the inner wall of the lower pen shaft.

[0039] In the technical solution, by arranging guide ribs on the inner wall of the lower pen shaft, the pen core can cooperate with the pen shaft through the guide ribs during the sliding and retracting process relative to the pen shaft, thereby reducing the gap between the pen core and the pen shaft, and making the sliding cooperation between the pen core and the pen shaft more reliable; the guide ribs include a first guide section and a second guide section distributed up and down, the second guide section is closer to the pen core outlet, and the thickness of the second guide section is set to be greater than that of the first guide section, so that the pen core can be more easily aligned with the pen core outlet and extended along the second guide section, so that the pen core can be ejected more smoothly.

[0040] As an improvement, at least two guide ribs are provided, and the guide ribs are evenly distributed along the circumference of the lower pen shaft.

[0041] In the technical solution, by providing at least two guide ribs, the guide ribs are in a clamping state relative to the pen core, and the pen core slides more smoothly and reliably. Preferably, four guide ribs are provided.

[0042] As an improvement, a sixth limiting portion is provided on the pen core, the sixth limiting portion is adapted to the guide rib, one end of the reset elastic member abuts against the upper end of the first guide section, and the other end of the reset elastic member abuts against the sixth limiting portion.

[0043] In the present technical solution, the pen core slides along the guide rib through the sixth limiting part, and the sliding efficiency is higher; the elastic reset member is sleeved on the outer periphery of the pen core, and the elastic reset member is installed in the lower pen shaft, and the elastic reset member is installed between the sixth limiting part and the first guide section, one end of the elastic reset member is abutted against the first guide section for limiting, and the other end of the elastic reset member is abutted against the sixth limiting part for limiting, the installation structure is reliable, and takes up little space.

[0044] The present invention relates to a push-type writing tool, which provides a linkage part and a guide structure between the pen core and the pen barrel, and utilizes the cooperation of the linkage part and the guide structure to make the pen core extend and retract relative to the pen barrel, and the linkage part and the guide structure are both located in the circumferential direction of the pen core, and do not occupy the axial installation space of the pen core; by providing a linkage part that cooperates with the guide structure in circumferential rotation, the push part of the pen core is pressed, and the pen core is ejected, and the linkage part and the guide structure move relative to each other to an axial limit, so that the pen core cannot move upward relative to the pen barrel, and the ejection of the pen core is locked, and the pressing part is pressed again, so that the linkage part and the guide structure are forced to release the limit, and the linkage part continues to move relative to the guide structure under the action of the reset elastic member to reset, so that the pen core is retracted, and the cooperation of the linkage part and the guide structure makes the pen core extend and retract, and the push structure does not need to rely on the pen clip. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The present invention discloses a three-dimensional structural schematic diagram of a push-type writing tool.

[0046] Figure 2 The diagram is a schematic diagram of the exploded structure of a push-type writing tool disclosed herein.

[0047] Figure 3 The present invention discloses a cross-sectional structural schematic diagram of a push-type writing tool.

[0048] Figure 4 For this disclosure Figure 3 A local enlarged schematic diagram of point A in the middle.

[0049] Figure 5 It is a schematic diagram of the cross-sectional structure of the upper pen holder in the present invention.

[0050] Figure 6 It is a schematic diagram of the three-dimensional structure of the linkage part in the present disclosure.

[0051] Figure 7 It is a perspective view of the linkage part in the present disclosure sliding along the second guide structure.

[0052] Figure 8It is a perspective view of the linkage part in the present disclosure sliding along the first inclined section.

[0053] Fig. 9 It is a perspective view of the first protrusion sliding to the first limiting portion in the present disclosure.

[0054] Fig.10 It is a perspective view of the second protrusion sliding to the second limiting portion in the present disclosure.

[0055] Fig.11 It is a perspective view of the linkage part in the present disclosure sliding along the second inclined section.

[0056] Fig.12 It is a schematic diagram of the cross-sectional structure of the lower pen holder in the present invention.

[0057] As shown in the figure: 1. pen shaft; 11. upper pen shaft; 12. lower pen shaft; 121. guide rib; 1211. first guide section; 1212. second guide section; 13. convex rib; 2. pen core; 21. pressing part; 22. fifth limiting part; 221. convex ring structure; 23. sixth limiting part; 24. ink storage tube; 3. reset elastic member; 4. linkage part; 41. first protrusion; 42. second protrusion; 43. opening; 5. first guide structure; 51. first inclined section; 511. first limiting part; 52. second inclined section; 521. second limiting part; 6. second guide structure; 7. third guide structure; 71. third inclined section; 711. third limiting part; 72. fourth inclined section; 721. fourth limiting part. DETAILED DESCRIPTION

[0058] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0059] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0060] It should also be understood that the terms “comprises,” “including,” “has,” “includes,” and “containing,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0061] Example 1

[0062] like Figures 1 to 12As shown, the present application discloses a push-type writing tool, including a pen barrel 1 and a pen core 2, the pen core 2 can slide and retract relative to the pen barrel 1, a reset elastic member 3 is installed on the pen core 2, the pen core 2 moves downward in the pen barrel 1 to compress the reset elastic member 3, and the pen core 2 is reset by the upward movement of the reset elastic member 3, one end of the pen core 2 is connected with a pressing part 21, the pressing part 21 is an operating part for the user to drive the pen core 2 to retract, the pressing part 21 can be a separate component or an integrated structure with the pen core 2, in the present application, the end where the pressing part 21 is located is set as the upper end, and the end of the pen core 2 away from the pressing part 21 is set as the lower end, and this is the up and down direction; a linkage part 4 and a first guide structure 5 are set between the pen barrel 1 and the pen core 2, and the pen core 2 is retracted relative to the pen barrel 1 by the cooperation of the linkage part 4 and the first guide structure 5, and the linkage part 4 and the first guide structure 5 are both located in the circumferential direction of the pen core 2, and do not occupy the axial installation space of the pen core 2.

[0063] Among them, Figure 2 and Figure 3 As shown, the linkage part 4 is arranged on the outer wall of the pen core 2, and the first guide structure 5 is arranged on the inner wall of the pen holder 1. The linkage part 4 is an annular sleeve, and the linkage part 4 is provided with an opening 43 along the axial direction. The linkage part 4 is sleeved on the outer wall of the pen core 2 through the opening 43. The first guide structure 5 and the pen holder 1 are integrally formed. The pen core 2 can slide and retract relative to the pen holder 1 through the cooperation of the linkage part 4 and the first guide structure 5 to realize the core ejection and retraction. It should be noted that the first guide structure 5 is a fixed structure arranged on the inner wall of the pen holder 1, so when the pen core 2 slides down relative to the pen holder 1, the relative movement of the linkage part 4 and the first guide structure 5 is that the linkage part 4 moves downward relative to the first guide structure 5.

[0064] like Figure 5 and Figure 8 As shown, the first guide structure 5 is matched with the linkage part 4 to rotate circumferentially, and the first guide structure 5 includes a first inclined section 51 and a second inclined section 52 distributed up and down, and the first inclined section 51 and the second inclined section 52 are both in the shape of oblique teeth; when the refill needs to be ejected, the user presses the pressing part 21 to move the refill 2 downward, and the linkage part 4 is pressed and moves along the first inclined section 51, and the linkage part 4 rotates relative to the first guide structure 5. At this time, the reset elastic member 3 is in a compressed force state, as shown in FIG. Fig. 9 As shown, when the linkage part 4 moves along the first inclined section 51 until the linkage part 4 cannot move downward, this is the first stage. The user releases the pressing part 21, and the linkage part 4 moves along the second inclined section 52 under the upward elastic force of the reset elastic member 3, as shown in FIG. Fig.10As shown, when the linkage part 4 moves along the second inclined section 52 until the linkage part 4 cannot move upward, this is the second stage, and the refill 2 is in a refill-out locking state. At this time, the user can use it normally and will not return the refill; when the refill needs to be returned, the user presses the pressing part 21 again to move the refill 2 downward, and the linkage part 4 moves along the first inclined section 51. The linkage part 4 rotates relative to the first guide structure 5, so that the linkage part 4 passes over part of the second inclined section 52. At this time, the user can release the pressing part 21, as shown in FIG. Fig.11 As shown, under the action of the reset elastic member 3, the linkage part 4 continues to move along the second inclined section 52 until the linkage part 4 is separated from the first guide structure 5 and reset by the reset elastic member 3, so that the pen core 2 returns to the core; on the other hand, the first guide structure 5 and the linkage part 4 are circumferentially rotated together. After a stroke is completed, the linkage part 4 rotates relative to the first guide structure 5 and can return to the origin, so that the stroke operation can be repeated.

[0065] like Figure 5 As shown, the first inclined section 51 is provided with a first limiting portion 511, and the first limiting portion 511 is a turning point on the first inclined section 51. The second inclined section 52 is provided with a second limiting portion 521, and the second limiting portion 521 is a turning point on the second inclined section 52. The first limiting portion 511 and the second limiting portion 521 are staggered and distributed, and the first limiting portion 511 is located at the front side of the second limiting portion 521. The first inclined section 51 is provided with the first limiting portion 511 so that the linkage portion 4 cannot move downward, and the second inclined section 52 is provided with the second limiting portion 521 so that the linkage portion 4 cannot move upward; as shown Fig. 9 As shown, when the linkage part 4 moves along the first inclined section 51, the linkage part 4 rotates relative to the first guide structure 5, and the linkage part 4 first moves to the first limiting part 511, and the linkage part 4 abuts against the first limiting part 511 to achieve axial limiting, so that the linkage part 4 cannot move downward, and the pen core 2 cannot move downward relative to the pen body 1. This is the first stage. Fig.10 As shown, when the linkage part 4 moves along the second inclined section 52 under the action of the reset elastic member 3, the linkage part 4 rotates relative to the first guide structure 5, and the linkage part 4 moves to the second limiting portion 521, and the linkage part 4 abuts against the second limiting portion 521 to achieve axial limitation. This is the second stage, so that the linkage part 4 cannot move upward, and the pen core 2 cannot move upward relative to the pen body 1. Under the action of the pressing force, the linkage part 4 moves downward along the first inclined section 51, and the linkage part 4 rotates relative to the first guide structure 5, so that the linkage part 4 passes over the second limiting portion 521. At this time, the user releases the pressing part 21, as shown in FIG. Fig.11 As shown, under the action of the elastic reset member, the linkage portion 4 continues to move along the second inclined section 52 .

[0066] like Figure 6As shown, a first protrusion 41 is provided at one end of the linkage part 4, and a second protrusion 42 is provided at the other end of the linkage part 4. The first protrusion 41 and the second protrusion 42 are staggered in an upper and lower manner. The first protrusion 41 is adapted to the first inclined section 51, and the second protrusion 42 is adapted to the second inclined section 52. The linkage part 4 realizes circumferential rotation by the first protrusion 41 moving along the first inclined section 51 and the second protrusion 42 moving along the second inclined section 52; Figure 8 As shown, when the first protrusion 41 moves along the first inclined section 51, the linkage portion 4 rotates relative to the first guide structure 5, as shown in FIG. Fig. 9 As shown, the first protrusion 41 first reaches the first limiting portion 511, and the first protrusion 41 abuts against the first limiting portion 511 to achieve axial limiting, so that the linkage portion 4 cannot move downward. When the second protrusion 42 moves along the second inclined section 52, the first protrusion 41 disengages from the first limiting portion 511, and the linkage portion 4 rotates relative to the first guide structure 5. Fig.10 As shown, the second protrusion 42 moves into the second limiting portion 521, and the second protrusion 42 abuts against the second limiting portion 521 to achieve axial limiting, so that the linkage portion 4 cannot move upward. Under the action of the pressing force, the second protrusion 42 disengages from the second limiting portion 521, and the first protrusion 41 moves along the first inclined section 51. The linkage portion 4 rotates relative to the first guide structure 5, so that the second protrusion 42 passes over the second limiting portion 521. The user releases the pressing portion 21. Fig.11 As shown, under the action of the resetting elastic member 3, the second protrusion 42 abuts against the second inclined section 52 and moves along the second inclined section 52, so that the linkage part 4 continues to rotate relative to the first guide structure 5. More specifically, in this embodiment, at least one first protrusion 41 and at least one second protrusion 42 are provided, so that the cooperation between the linkage part 4 and the first guide structure 5 is more reliable and smooth.

[0067] like Figure 5 and Figure 7 As shown, a second guide structure 6 is provided between the pen holder 1 and the pen core 2, and the second guide structure 6 is axially slidably matched with the second protrusion 42. The linkage part 4 moves downward along the second guide structure 6 through the second protrusion 42, and the bottom of the second guide structure 6 is connected to the second inclined section 52. Figures 7 to 11As shown, the user presses the pressing portion 21 to make the linkage portion 4 slide relative to the second guide structure 6. When the second protrusion 42 slides to the bottom of the second guide structure 6, the first protrusion 41 is connected to the first inclined section 51 and moves along the first inclined section 51 to the first limiting portion 511 under the action of the pressing force. The user releases the pressing portion 21. Under the upward elastic force of the resetting elastic member 3, the second protrusion 42 is connected to the second inclined section 52 and moves along the second inclined section 52 to the second limiting portion 521 to achieve core-out locking. When the core needs to be returned, the user presses the pressing portion 21 again to make the second protrusion 42 disengage from the second limiting portion 521, and the first protrusion 41 is connected to the first inclined section 51 and moves along the second inclined section 52 to the second limiting portion 521. The first inclined section 51 moves so that the second protrusion 42 passes over the second limiting portion 521. The user releases the pressing portion 21. Under the upward elastic force of the reset elastic member 3, the second protrusion 42 is connected to the second inclined section 52 and moves along the second inclined section 52 to disengage from the first guide structure 5. Since the bottom of the second guide structure 6 is connected to the second inclined section 52, the second protrusion 42 can move along the second inclined section 52 to the bottom of the second guide structure 6. Under the upward elastic force of the reset elastic member 3, the second protrusion 42 moves upward along the second guide structure 6, so that the pen core 2 is refilled. Under the cooperation of the second guide structure 6 and the second protrusion 42, the refilling and ejecting of the pen core 2 is smoother and more labor-saving.

[0068] like Fig.11 As shown, when the second protrusion 42 moves downward along the second guide structure 6 to connect with the second inclined section 52, the first protrusion 41 passes through the second guide structure 6 to connect with the first inclined section 51. When the second protrusion 42 moves along the second inclined section 52 to disengage from the first guide structure 5 under the upward elastic force of the reset elastic member 3, since the bottom of the second guide structure 6 is connected with the second inclined section 52, the second protrusion 42 can move along the second inclined section 52 to the bottom of the second guide structure 6, as shown in FIG. Figure 5 and Figure 6 As shown, the thickness of the second guide structure 6 is set to be smaller than the thickness of the first guide structure 5, and the thickness of the first protrusion 41 is set to be smaller than the thickness of the second protrusion 42, so that the first protrusion 41 is not restricted by the second guide structure 6, and the first protrusion 41 can easily pass through the first guide structure 5 to facilitate the next stroke operation. The structure is cleverly designed and is smooth and labor-saving to use.

[0069] like Figures 5 to 11As shown, a third guide structure 7 is arranged between the pen barrel 1 and the pen core 2, and the third guide structure 7 is matched with the linkage part 4 in circumferential rotation. The thickness of the third guide structure 7 is greater than the thickness of the second guide structure 6, and the second guide structure 6 is located between the first guide structure 5 and the third guide structure 7; after the linkage part 4 rotates and passes through the first guide structure 5, the linkage part 4 moves upward along the second guide structure 6 to complete a core-out and core-back stroke. When it is necessary to output the core again, the pressing force causes the linkage part 4 to move downward along the second guide structure 6, and the linkage part 4 passes through the second guide structure 6 to the third guide structure 7, so that the linkage part 4 can move along the third guide structure 7, and the linkage part 4 rotates to repeat the core-out and core-back stroke. The second guide structure 6 is located between the first guide structure 5 and the third guide structure 7, that is, the second guide structure 6 is provided with at least two, so that after the linkage part 4 rotates and passes through the third guide structure 7, the linkage part 4 can move upward along another second guide structure 6 to complete the stroke. By providing the third guide structure 7, the rotation stroke of the linkage part 4 can be shortened, making it easier for users to use.

[0070] like Figure 5 As shown, the third guide structure 7 includes a third inclined section 71 and a fourth inclined section 72 distributed up and down, the third inclined section 71 is provided with a third limiting portion 711, and the fourth inclined section 72 is provided with a fourth limiting portion 721. The third guide structure 7 is connected with the bottom of the second guide structure 6 through the fourth inclined section 72. When the linkage part 4 is separated from the first guide structure 5 and moves upward along the second guide structure 6 to reset, the pen core 2 is subjected to the pressing force and moves downward along the second guide structure 6 to the bottom. The first protrusion 41 passes through the second guide structure 6 and connects to the third inclined section 71. The linkage part 4 moves along the third inclined section 71 to the third limiting part 711, so that the linkage part 4 cannot move downward. The linkage part 4 moves along the fourth inclined section 72 to the fourth limiting part 721 under the action of the reset elastic member 3, so that the linkage part 4 cannot move upward. The lead 2 is locked. When the lead 2 is pressed downward again, the second protrusion 42 and the fourth limiting part 721 are released from the limit, and rotate along the fourth inclined section 72 to disengage from the third guide structure 7. The linkage part 4 moves upward along the second guide structure 6 through the reset elastic member 3 to reset the lead 2. It should be noted that the cooperation between the linkage part 4 and the third guide structure 7 is the same as the cooperation between the linkage part 4 and the first guide structure 5. By adding the third guide structure 7, the travel of the linkage part 4 is shortened, that is, the travel of the lead 2 to be ejected and returned is shortened, so that the user can use it more smoothly and labor-saving.

[0071] More specifically, the guide structure and the pen body 1 are an integrated structure, the first guide structure 5 and the third guide structure 7 are both irregular convex block structures arranged on the inner wall of the pen body 1, and the second guide structure 6 is a slide groove structure arranged on the inner wall of the pen body 1, and the slide groove extends axially along the pen body 1. At least two convex ribs 13 are arranged on the inner wall of the pen body 1, and the two convex ribs 13 and the part of the inner wall of the pen body 1 between the two convex ribs 13 constitute the slide groove structure, which simplifies the installation components of the click pen and makes the installation more convenient. The cooperation between the guide structure of the integrated structure and the linkage part 4 is more reliable and smoother; the second guide structure 6 is arranged to be composed of the convex rib 13 on the inner wall of the pen body 1, and the slide groove structure is simple.

[0072] At least one of the first guide structure 5, the second guide structure 6 and the third guide structure 7 is provided, and the first guide structure 5, the second guide structure 6 and the third guide structure 7 are uniformly distributed in the circumferential direction in sequence. A single first guide structure 5, the second guide structure 6 and the third guide structure 7 form a group. By providing multiple groups in the circumferential direction, the travel of the linkage part 4 during one rotation is shortened, making it easier for the user to use and the structural coordination more reliable. More specifically, in this embodiment, four of the first guide structure 5, the second guide structure 6 and the third guide structure 7 are provided.

[0073] like Figures 2 to 4 As shown, a fifth limiting portion 22 is provided on the outer wall of the refill 2, and the linkage portion 4 is installed in the fifth limiting portion 22, and the fifth limiting portion 22 is used to axially limit the linkage portion 4; the fifth limiting portion 22 includes two convex ring structures 221, and the two convex ring structures 221 are distributed up and down on the outer wall of the refill 2, and the two convex ring structures 221 are respectively matched with the upper and lower ends of the limiting portion, and the linkage portion 4 is sleeved in the fifth limiting portion 22 through the opening 43. The refill 2 limits the axial sliding of the linkage portion 4 through the upper and lower convex ring structures 221 to prevent the linkage portion 4 from sliding axially along the refill 2, thereby improving the matching efficiency, and the convex ring structure 221 is simple and occupies less space.

[0074] like Figure 2 and Figure 3 As shown, the pen holder 1 includes an upper pen holder 11 and a lower pen holder 12, the upper pen holder 11 and the lower pen holder 12 are threadedly connected, a variety of guide structures and linkage parts 4 are arranged between the upper pen holder 11 and the refill 2, and the lower pen holder 12 is provided with an outlet for the refill 2; Fig.12As shown, the inner wall of the lower pen shaft 12 is provided with guide ribs 121 along the axial direction, so that the pen core 2 can cooperate with the pen shaft 1 through the guide ribs 121 during the sliding and retracting process relative to the pen shaft 1, thereby reducing the gap between the pen core 2 and the pen shaft 1, and the sliding cooperation between the pen core 2 and the pen shaft 1 is more reliable; the guide ribs 121 include a first guide section 1211 and a second guide section 1212, the first guide section 1211 is located above the second guide section 1212, and the second guide section 1212 is closer to the outlet of the pen core 2. The thickness of the first guide section 1211 on the inner wall of the lower pen shaft 12 is smaller than the thickness of the second guide section 1212 on the inner wall of the lower pen shaft 12, so that the pen core 2 is more easily aligned with the outlet of the pen core 2 along the second guide section 1212 and extends out, so that the pen core 2 is more smoothly ejected; at least two guide ribs 121 are provided, and the guide ribs 121 are evenly distributed along the circumference of the lower pen shaft 12, so that the guide ribs 121 are in a clamping state relative to the pen core 2, and the sliding of the pen core 2 is more smooth and reliable. More specifically, in this embodiment, four guide ribs 121 are provided.

[0075] like Figure 2 and Figure 3 As shown, the pen core 2 is provided with a sixth limiting portion 23, which is a circular ring structure, and is adapted to the guide rib 121. The pen core 2 moves upward and downward along the guide rib 121 through the sixth limiting portion 23, and the sliding efficiency is higher; the elastic reset member is sleeved on the outer periphery of the pen core 2, and the elastic reset member is installed in the lower pen rod 12, one end of the reset elastic member 3 is against the upper end of the first guide section 1211 for limiting, and the other end of the reset elastic member 3 is against the sixth limiting portion 23 for limiting, and the installation structure is reliable and occupies less space. More specifically, in this embodiment, the upper part of the pen core 2 is configured as an ink storage tube 24, the size of the ink storage tube 24 is adapted to the upper pen rod 11, and the ink storage capacity of the pen core 2 can be increased, and the sixth limiting portion 23 is arranged at the bottom of the ink storage tube 24.

[0076] Example 2

[0077] This embodiment provides a push-type writing tool based on the embodiment 1, wherein the linkage part 4 is arranged on the inner wall of the pen barrel 1, and the first guide structure 5, the second guide structure 6, and the third guide structure 7 are all arranged on the outer wall of the pen core 2. Compared with the embodiment 1, the linkage part 4 and the various guide structures are exchanged in this embodiment, and the movement is the same as that of the embodiment 1. It should be noted that the linkage part 4 is a structure fixed on the inner wall of the pen barrel 1, so when the pen core 2 slides down relative to the pen barrel 1, the relative movement of the linkage part 4 and the first guide structure 5 is that the linkage part 4 moves upward relative to the first guide structure 5. Other structures not mentioned are the same as those of the embodiment 1.

[0078] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A push-type writing tool, characterized in that: The invention comprises a pen holder (1) and a pen core (2), wherein a reset elastic member (3) is installed on the pen core (2), a linkage part (4) and a first guide structure (5) are arranged between the pen holder (1) and the pen core (2), the first guide structure (5) and the linkage part (4) are circumferentially rotated together, one end of the pen core (2) is connected to a pressing part (21), when the pressing part (21) moves downwards and causes the linkage part (4) and the first guide structure (5) to move relative to each other to an axial limit, the linkage part (4) moves relative to the first guide structure (5) under the action of the reset elastic member (3) and releases the limit, and the pen core (2) is locked; when the pressing part (21) moves downwards again, the linkage part (4) and the first guide structure (5) are released from the limit, and the linkage part (4) moves upwards and resets through the reset elastic member (3), so that the pen core (2) is retracted; The first guide structure (5) comprises a first inclined section (51) and a second inclined section (52) which are distributed vertically. When the pressing part (21) moves downwards and causes the linkage part (4) and the first inclined section (51) to move relative to each other to the first stage, the linkage part (4) moves relative to the second inclined section (52) to the second stage under the action of the resetting elastic member (3), so that the linkage part (4) is axially limited and the lead (2) is locked; One end of the linkage part (4) is provided with a first protrusion (41), and the other end of the linkage part (4) is provided with a second protrusion (42); the first protrusion (41) is adapted to the first inclined section (51), and the second protrusion (42) is adapted to the second inclined section (52).

2. A push-type writing tool according to claim 1, characterized in that: When the pressing portion (21) moves downward again, the linkage portion (4) and the second inclined section (52) move relative to each other until they are separated from the first guide structure (5), and the linkage portion (4) and the first guide structure (5) are reset through the action of the reset elastic member (3), so that the pen core (2) is retracted.

3. A push-type writing tool according to claim 2, characterized in that: The first inclined section (51) is provided with a first limiting portion (511), and the second inclined section (52) is provided with a second limiting portion (521); the first limiting portion (511) and the second limiting portion (521) are staggered and distributed; when the linkage portion (4) and the first inclined section (51) move relative to the first limiting portion (511), the pen core (2) cannot move downward relative to the pen holder (1); when the linkage portion (4) moves relative to the second inclined section (52) through the action of the resetting elastic member (3) to the second limiting portion (521), the pen core (2) cannot move upward relative to the pen holder (1).

4. The push-type writing tool according to claim 1, characterized in that: The first protrusion (41) and the second protrusion (42) are staggered in an up-and-down manner, and each of the first protrusion (41) and the second protrusion (42) is provided with at least one.

5. A push-type writing tool according to claim 4, characterized in that: A second guide structure (6) is also provided between the pen shaft (1) and the pen core (2); the second guide structure (6) is axially slidably matched with the second protrusion (42); the linkage part (4) moves relative to the second guide structure (6) via the second protrusion (42); and one end of the second guide structure (6) is connected to the second inclined section (52).

6. A push-type writing tool according to claim 5, characterized in that: The thickness of the first protrusion (41) is smaller than the thickness of the second protrusion (42); the second protrusion (42) is circumferentially limited within the second guide structure (6); the first protrusion (41) and the second guide structure (6) do not interfere with each other.

7. A push-type writing tool according to claim 6, characterized in that: The thickness of the second guide structure (6) is smaller than the thickness of the first guide structure (5).

8. The push-type writing tool according to claim 5, characterized in that: A third guide structure (7) is also provided between the pen holder (1) and the pen core (2); the third guide structure (7) is circumferentially rotatably matched with the linkage portion (4); the thickness of the third guide structure (7) is greater than the thickness of the second guide structure (6); and the second guide structure (6) is located between the first guide structure (5) and the third guide structure (7).

9. The push-type writing tool according to claim 8, characterized in that: The third guide structure (7) comprises a third inclined section (71) and a fourth inclined section (72) which are distributed up and down. The third inclined section (71) is provided with a third limiting portion (711), and the fourth inclined section (72) is provided with a fourth limiting portion (721). The third guide structure (7) is connected with one end of the second guide structure (6) through the fourth inclined section (72). When the linkage part (4) is separated from the first guide structure (5) and moves relative to the second guide structure (6) to reset, under the action of a pressing force, the linkage part (4) and the second guide structure (6) move relative to each other to the end where the second guide structure (6) is connected with the fourth inclined section (72). The first protrusion (41) passes through the second guide structure (6) and connects to the fourth inclined section (72). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1). The pen core (2) is locked when the pen core (2) is pulled out of the pen shaft (1) and the ...

10. The push-type writing tool according to claim 8, characterized in that: At least one of the first guide structure (5), the second guide structure (6) and the third guide structure (7) is provided, and the first guide structure (5), the second guide structure (6) and the third guide structure (7) are uniformly distributed in the circumferential direction in sequence.

11. The push-type writing tool according to claim 10, characterized in that: The linkage part (4) is arranged on the outer wall of the pen core (2), and the first guide structure (5), the second guide structure (6) and the third guide structure (7) are all arranged on the inner wall of the pen body (1).

12. A push-type writing tool according to claim 1 or 11, characterized in that: The linkage part (4) is sleeved with the pen core (2); the linkage part (4) is provided with an opening (43); and the linkage part (4) is sleeved on the outer wall of the pen core (2) through the opening (43).

13. The push-type writing tool according to claim 12, characterized in that: The outer wall of the pen core (2) is provided with a fifth limiting portion (22), the linkage portion (4) is installed in the fifth limiting portion (22), and the fifth limiting portion (22) is used to axially limit the linkage portion (4).

14. A push-type writing tool according to claim 13, characterized in that: The fifth limiting portion (22) comprises two convex ring structures (221), the two convex ring structures (221) are distributed up and down on the outer wall of the pen core (2), and the two convex ring structures (221) are respectively gap-matched with the upper and lower ends of the linkage portion (4).

15. The push-type writing tool according to claim 11, characterized in that: The first guide structure (5) and the third guide structure (7) are both convex block structures arranged on the inner wall of the pen shaft (1), and the second guide structure (6) is a sliding groove structure arranged on the inner wall of the pen shaft (1).

16. The push-type writing tool according to claim 15, characterized in that: At least two convex ribs (13) are arranged on the inner wall of the pen holder (1), and the two convex ribs (13) and the part of the inner wall of the pen holder (1) between the two convex ribs (13) constitute the sliding groove structure.

17. The push-type writing tool according to claim 8, characterized in that: The linkage part (4) is arranged on the inner wall of the pen shaft (1), and the first guide structure (5), the second guide structure (6) and the third guide structure (7) are all arranged on the outer wall of the pen core (2).

18. The push-type writing tool according to claim 1, characterized in that: The pen shaft (1) comprises an upper pen shaft (11) and a lower pen shaft (12); the upper pen shaft (11) is threadedly connected to the lower pen shaft (12); and the linkage portion (4) and the first guide structure (5) are both located in the upper pen shaft (11).

19. The push-type writing tool according to claim 18, characterized in that: The inner wall of the lower pen shaft (12) is provided with a guide rib (121) along the axial direction, and the guide rib (121) comprises a first guide section (1211) and a second guide section (1212), the first guide section (1211) is located above the second guide section (1212), and the thickness of the first guide section (1211) on the inner wall of the lower pen shaft (12) is smaller than the thickness of the second guide section (1212) on the inner wall of the lower pen shaft (12).

20. The push-type writing tool according to claim 19, characterized in that: At least two guide ribs (121) are provided, and the guide ribs (121) are evenly distributed along the circumference of the lower pen shaft (12).

21. The push-type writing tool according to claim 20, characterized in that: The pen core (2) is provided with a sixth limiting portion (23), the sixth limiting portion (23) is adapted to the guide rib (121), one end of the resetting elastic member (3) abuts against the upper end of the first guide section (1211), and the other end of the resetting elastic member (3) abuts against the sixth limiting portion (23).

Images