Telescopic marking pen

Abstract

The utility model relates to a telescopic marking pen which comprises a pen shell, a rotating plug and a pen inner container, a spiral groove is formed in the side wall of a containing cavity of the pen shell, the rotating plug is arranged on the pen shell in a rotating mode, a guide rail sleeve is arranged on the rotating plug, the pen inner container is arranged in the containing cavity, and a second end matched with the pen inner container is movably arranged in a telescopic cavity of the guide rail sleeve. When the rotating plug is rotated, the guide rail sleeve and the pen inner container in the guide rail sleeve can be driven to rotate, the guide column on the pen inner container moves in the spiral groove and the telescopic groove in the guide rail sleeve at the same time, the position of the pen inner container in the guide rail sleeve can be changed, and the pen inner container can be driven to rotate. Therefore, the first end of the pen inner container movably protrudes out of the second end of the pen shell, the length of the pen point of the telescopic marking pen is adjusted, and meanwhile under the guiding effect of the guide rail sleeve, the first end of the pen inner container can stably and movably protrude out of the second end of the pen shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to writing stationery technical field, especially a telescopic marker. BACKGROUND

[0002] As a writing tool, the pen plays an important role in people's daily life and work. According to the different use requirements and use environments, there are various types of pens, such as watercolor pens, oil pens, markers and whiteboard pens.

[0003] The telescopic marker is a writing tool with innovative design. Its biggest feature is that the pen head can be telescopic, so that the telescopic marker can perform well in various writing scenes. It is often used to mark important content, annotate text or chart. Users can adjust the length of the pen head according to the writing needs, so that the marks made are clear and accurate.

[0004] The existing telescopic marker usually has a tail at the tail of the pen barrel, and a threaded rod is arranged inside the pen barrel. The core is fixed on the threaded rod, and the threaded rod is screwed with the tail. In this way, rotating the tail can drive the threaded rod to rotate, so that the core can move forward and backward in the pen barrel, realizing the telescopic function of the core. However, during the rotation process, the contact between the threaded rod and the tail is prone to slipping, which not only affects the telescopic function of the core in the pen barrel, but also easily causes the moving core to shake, causing the core to be squeezed by the inner side wall of the pen barrel, resulting in damage to the core. In severe cases, it may not be able to be smoothly rotated out of the pen barrel, affecting the use effect of the telescopic marker. TECHNICAL FIELD

[0005] Therefore, it is necessary to provide a telescopic marker.

[0006] The utility model solves the above-mentioned technical scheme as follows: a telescopic marker, comprising:

[0007] A pen shell is provided with a receiving cavity in the inside, and a spiral groove is opened on the side wall of the receiving cavity.

[0008] A rotating plug is rotationally arranged on the first end of the pen shell, a guide rail sleeve is arranged on the rotating plug, an extension cavity is opened on the guide rail sleeve, and an extension slot is opened on the side wall of the extension cavity.

[0009] A pen liner is arranged in the receiving cavity, the first end of the pen liner is movably protruded to the second end of the pen shell, the second end of the pen liner is movably arranged in the extension cavity, a guide column is arranged on the pen liner, the first end of the guide column is connected with the pen liner, and the second end of the guide column protrudes to the outside of the extension slot and is located in the spiral groove.

[0010] In one embodiment, the inner barrel of the pen comprises: an ink barrel and a refill, the ink barrel is movably arranged in the telescopic cavity, the first end of the refill is connected with the first end of the ink barrel, and the first end of the refill is at least partially located in the ink barrel, the second end of the refill is movably protruded to the second end of the pen shell, and the guide column is arranged on the second end of the ink barrel.

[0011] In one embodiment, the pen shell comprises: a pen barrel and a pen mouth, the accommodating cavity is arranged on the pen barrel, the side wall of the accommodating cavity is provided with a rotating groove, the rotating plug is movably arranged on the first end of the pen barrel, the rotating plug is provided with a rotating block, the rotating block is located in the rotating groove, the first side of the rotating groove is communicated with the spiral groove, the second side of the rotating groove is provided with a guide inclined surface, the guide rail sleeve is embedded on the rotating plug, and the pen mouth is screwed on the second end of the pen barrel.

[0012] In one embodiment, the inner barrel of the pen further comprises: a protective shell, the protective shell is sleeved on the refill, the first end of the protective shell is connected with the ink barrel, and the refill is at least partially protruded to the outside of the second end of the protective shell.

[0013] In one embodiment, the outer side surface of the protective shell is provided with an indication mark.

[0014] In one embodiment, the telescopic marker pen further comprises: a guide seat, the ink barrel comprises: a barrel body and a cover body, the barrel body is provided with an ink storage cavity, the first end of the refill is connected with the first end of the barrel body, and the first end of the refill is at least partially located in the ink storage cavity, the cover body is arranged on the second end of the barrel body, the cover body movably closes the ink storage cavity, the guide seat is arranged on the cover body, and the guide column is arranged on the guide seat.

[0015] In one embodiment, the first limiting groove is arranged on the first end of the telescopic groove, the arrangement direction of the first limiting groove is perpendicular to the arrangement direction of the telescopic groove, and the first limiting groove is arranged towards the first side of the telescopic groove.

[0016] In one embodiment, the second limiting groove is arranged on the second end of the telescopic groove, the arrangement direction of the second limiting groove is perpendicular to the arrangement direction of the telescopic groove, and the second limiting groove is arranged towards the second side of the telescopic groove.

[0017] In one embodiment, the cross-sectional shape of the pen barrel is square, circular, oval or triangular.

[0018] In one embodiment, the telescopic marker pen further comprises: a pen sleeve, the pen sleeve is movably sleeved on the second end of the pen shell.

[0019] The utility model discloses an advantageous effect is: the utility model discloses a telescopic marking pen, the spiral groove is set up on the lateral wall of the containing cavity of the pen shell, and the rotary plug is rotatably arranged on the pen shell, the guide rail sleeve is arranged on the rotary plug, the pen inner bag is arranged in the containing cavity, and the second end of the pen inner bag is movably arranged in the telescopic cavity of the guide rail sleeve, and the guide column on the pen inner bag projects to the outside of the telescopic groove and is located in the spiral groove, when the rotary plug is rotated, can drive the guide rail sleeve and the pen inner bag in the guide rail sleeve and rotate, and the guide column on the pen inner bag moves in the spiral groove, and moves in the telescopic groove on the guide rail sleeve, can make the position of the pen inner bag change in the guide rail sleeve, thereby making the first end of the pen inner bag movable and projecting to the second end of the pen shell, realize the length adjustment of the pen head of telescopic marking pen, and under the guidance of the guide rail sleeve, the first end of the pen inner bag can stably move and project to the second end of the pen shell. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0021] Figure 1 It is the structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0022] Figure 2 It is the structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0023] Figure 3 It is the three-dimensional exploded structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0024] Figure 4 It is the three-dimensional exploded structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0025] Figure 5 It is the three-dimensional exploded structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0026] Figure 6 It is the sectional structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0027] Figure 7 It is the sectional structure schematic diagram of telescopic marking pen of one embodiment of the utility model;

[0028] Figure 8A cross section structure schematic view of the pen shell of one embodiment of the present utility model;

[0029] Figure 9 A cross section structure schematic view of the pen barrel of one embodiment of the present utility model;

[0030] Figure 10 A cross section structure schematic view of the pen barrel of one embodiment of the present utility model;

[0031] Figure 11 A cross section structure schematic view of the pen barrel of one embodiment of the present utility model;

[0032] Figure 12 A cross section structure schematic view of the pen barrel of one embodiment of the present utility model.

[0033] In the drawing, 10, retractable marker; 100, pen shell; 101, accommodating cavity; 102, spiral groove; 103, rotating groove; 104, guide inclined surface; 110, pen barrel; 120, pen nozzle; 200, rotating plug; 210, guide rail sleeve; 211, telescopic cavity; 212, telescopic groove; 213, first limiting groove; 214, second limiting groove; 220, rotating block; 300, pen inner container; 310, ink cylinder; 311, cylinder body; 312, cover body; 313, ink storage cavity; 320, pen refill; 330, protective shell; 340, indication mark; 410, guide column; 420, guide seat; 500, pen sleeve. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the present utility model and the features in the embodiments can be combined with each other without conflict. The technical scheme of the present utility model will be further described below in combination with the drawings of the embodiments of the present utility model, and the present utility model is not limited to the following specific embodiments.

[0035] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, and for ordinary skilled persons in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] In one embodiment, as Figure 1 , Figure 2 , Figure 3 ,Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown in FIGS. 1-4, a retractable marker 10 comprises a marker shell 100, a rotating plug 200 and a marker inner barrel 300, the inside of the marker shell 100 is provided with a containing cavity 101, a spiral groove 102 is formed on the side wall of the containing cavity 101, the rotating plug 200 is rotationally arranged on the first end of the marker shell 100, a guide rail sleeve 210 is arranged on the rotating plug 200, a retracting cavity 211 is formed on the guide rail sleeve 210, a retracting groove 212 is formed on the side wall of the retracting cavity 211, the marker inner barrel 300 is arranged in the containing cavity 101, the first end of the marker inner barrel 300 is movably protruded to the second end of the marker shell 100, the second end of the marker inner barrel 300 is movably arranged in the retracting cavity 211 of the guide rail sleeve 210, a guide column 410 is arranged on the marker inner barrel 300, the first end of the guide column 410 is connected with the marker inner barrel 300, the second end of the guide column 410 is protruded to the outside of the retracting groove 212 and located in the spiral groove 102.

[0037] In the embodiment, the spiral groove 102 is formed on the side wall of the containing cavity 101 of the marker shell 100, the rotating plug 200 is rotationally arranged on the marker shell 100, the guide rail sleeve 210 is arranged on the rotating plug 200, the marker inner barrel 300 is arranged in the containing cavity 101, the second end of the marker inner barrel 300 is movably arranged in the retracting cavity 211 of the guide rail sleeve 210, and the guide column 410 on the marker inner barrel 300 is protruded to the outside of the retracting groove 212 and located in the spiral groove 102. When the rotating plug 200 starts to rotate, the guide column 410 on the marker inner barrel 300 abuts against the side wall of the retracting groove 212, which can drive the guide rail sleeve 210 and the marker inner barrel 300 in the guide rail sleeve 210 to rotate synchronously. At this time, the position between the marker inner barrel 300 and the guide rail sleeve 210 remains relatively static. With the rotation of the marker inner barrel 300, the guide column 410 on the marker inner barrel 300 moves in the spiral groove 102 along the direction of the spiral groove 102, and the guide column 410 on the marker inner barrel 300 moves in the retracting groove 212 of the guide rail sleeve 210 correspondingly, so as to change the position of the marker inner barrel 300 in the guide rail sleeve 210, and make the first end of the marker inner barrel 300 movably protrude to the second end of the marker shell 100 or retract from the second end of the marker shell 100 to the marker shell 100, thereby realizing the adjustment of the length of the marker head of the retractable marker 10. Meanwhile, under the guidance of the guide rail sleeve 210, the first end of the marker inner barrel 300 can stably and movably protrude to the second end of the marker shell 100.

[0038] In the embodiment, when the length of the pen head of the telescopic marker pen 10 needs to be adjusted, the rotation of the rotating plug 200 drives the rotation of the guide rail sleeve 210 and the inner barrel 300, which is matched with the movement of the guide column 410 in the spiral groove 102 and the movement in the telescopic groove 212, so that the inner barrel 300 moves forward in the pen shell 100, and the first end of the inner barrel 300 extends to the outside of the second end of the pen shell 100. By reversing the rotation of the rotating plug 200 to drive the rotation of the guide rail sleeve 210 and the inner barrel 300, the inner barrel 300 can move backward, and the first end of the inner barrel 300 gradually shrinks into the pen shell 100, so that the length of the pen head of the telescopic marker pen 10 can be adjusted according to the writing needs. At the same time, the guide column 410 can stably move in the spiral groove 102, and the guide effect of the guide rail sleeve 210 can well realize the adjustment of the length of the pen head of the telescopic marker pen 10.

[0039] In one embodiment, as shown in Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , the inner barrel 300 includes: an ink cylinder 310 and a refill 320, the ink cylinder 310 is movably arranged in the telescopic cavity 211, the first end of the refill 320 is connected with the first end of the ink cylinder 310, and the first end of the refill 320 is at least partially located in the ink cylinder 310, the second end of the refill 320 movably protrudes to the second end of the pen shell 100, and the guide column 410 is arranged on the second end of the ink cylinder 310. Specifically, the inner barrel 300 is composed of the refill 320 and the ink cylinder 310, and the ink cylinder 310 can provide writing ink for the refill 320 by connecting with the refill 320. When the length of the pen head of the telescopic marker pen 10 is adjusted, that is, the length of the refill 320 located outside the second end of the pen shell 100 is adjusted, the rotation of the rotating plug 200 drives the rotation of the guide rail sleeve 210 and the inner barrel 300, which changes the position of the ink cylinder 310 in the guide rail sleeve 210, and the refill 320 moves forward in the pen shell 100, and the second end of the refill 320 gradually extends to the outside of the second end of the pen shell 100. By reversing the rotation of the rotating plug 200 to drive the rotation of the guide rail sleeve 210 and the inner barrel 300, the refill 320 can move backward, and the second end of the refill 320 gradually shrinks into the pen shell 100, so that the length of the refill 320 of the telescopic marker pen 10 can be adjusted according to the writing needs.

[0040] In one embodiment, as shown in Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, the pen shell 100 comprises a pen barrel 110 and a pen mouth 120, the accommodating cavity 101 is opened on the pen barrel 110, a rotating groove 103 is opened on the side wall of the accommodating cavity 101, the rotating plug 200 is rotationally arranged on the first end of the pen barrel 110, the rotating block 220 is arranged on the rotating plug 200, the rotating block 220 is located in the rotating groove 103, the first side of the rotating groove 103 is communicated with the spiral groove 102, the second side of the rotating groove 103 has a guide inclined surface 104, the guide rail sleeve 210 is embedded on the rotating plug 200, and the pen mouth 120 is screwed on the second end of the pen barrel 110. Specifically, the rotating plug 200 is rotated in the rotating groove 103 through the rotating block 220 to realize rotation on the first end of the pen barrel 110, the second side of the rotating groove 103 is provided with the guide inclined surface 104, the rotating plug 200 can be detached from the first end of the pen barrel 110 through the guide inclined surface 104 and separated from the guide rail sleeve 210, and the pen mouth 120 is detachably arranged on the pen barrel 110 in a threaded connection manner, so that the pen mouth 120 and the rotating plug 200 can be sequentially detached from the pen barrel 110, and finally the pen inner barrel 300 is detached from the pen barrel 110 to replace a new pen inner barrel 300.

[0041] In one embodiment, as shown in Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the pen inner barrel 300 further comprises a protective shell 330, the protective shell 330 is sleeved on the pen core 320, the first end of the protective shell 330 is connected with the ink barrel 310, and the pen core 320 at least partially protrudes to the outside of the second end of the protective shell 330. Specifically, the part of the pen core 320 protruding to the outside of the second end of the protective shell 330 is the writing end of the pen core 320, by sleeving the protective shell 330 on the pen core 320, the protective shell 330 can protect the pen core 320, avoid direct contact between the pen core 320 and the side wall of the accommodating cavity 101 of the pen shell 100, reduce the resistance of the pen core 320 when extending and retracting in the pen shell 100, and facilitate the extension and retraction of the pen core 320 in the pen barrel 110. At the same time, it also has the effect of encapsulation, avoiding the diffusion of ink in the pen core 320 to the outside, so that the ink can be transported along the central axis of the pen core 320 to the writing end of the pen core 320.

[0042] In one embodiment, as shown in Figure 3As shown, the outer side surface of the protective shell 330 is provided with an indication mark 340. Specifically, by providing the indication mark 340 on the protective shell 330, the extension length of the refill 320 can be indicated, so that the extension length of the refill 320 can be more intuitively understood, and the length of the refill 320 of the telescopic marker 10 can be better adjusted according to the writing requirement. For example, the indication mark 340 is a scale mark, and the extension length of the refill 320 can be intuitively understood.

[0043] In one embodiment, as shown in Figure 6 and Figure 7 The telescopic marker 10 further comprises a guide seat 420, the ink barrel 310 comprises a barrel 311 and a cover 312, the barrel 311 is provided with an ink storage cavity 313, the first end of the refill 320 is connected to the first end of the barrel 311, and the first end of the refill 320 is at least partially located in the ink storage cavity 313, the cover 312 is provided on the second end of the barrel 311, the cover 312 movably closes the ink storage cavity 313, the guide seat 420 is provided on the cover 312, and the guide column 410 is provided on the guide seat 420. Specifically, the ink barrel 310 is composed of the barrel 311 and the cover 312, the ink storage cavity 313 of the barrel 311 is used for storing ink, the cover 312 is used for closing the ink storage cavity 313, the first end of the refill 320 is provided in the ink storage cavity 313, and the ink in the ink storage cavity 313 can flow from the first end of the refill 320 to the second end of the refill 320, i.e. can be delivered to the writing end of the refill 320 for writing, the guide seat 420 is embedded on the cover 312, and the guide seat 420 and the guide column 410 are provided in an integrated structure, so that the guide column 410 can be quickly installed on the ink barrel 310, and the inner liner 300 is assembled.

[0044] In one embodiment, as shown in Figure 3 and Figure 5As shown, the first end of the telescopic groove 212 is provided with a first limiting groove 213, the opening direction of the first limiting groove 213 is perpendicular to the opening direction of the telescopic groove 212, and the first limiting groove 213 is arranged towards the first side of the telescopic groove 212. Specifically, the first limiting groove 213 is in communication with the telescopic groove 212, and the guide column 410 can move into the first limiting groove 213 during the movement in the telescopic groove 212, thereby playing a limiting role for limiting the movement distance of the inner barrel 300 in the guide rail sleeve 210 along one direction, so as to limit the movement distance of the cartridge 320 of the inner barrel 300 in one direction, that is, to limit the adjustment distance of the cartridge 320 in one direction. The first limiting groove 213 is used to limit the distance of the cartridge 320 to be inwards retracted to the pen shell 100, and when the guide column 410 is located in the first limiting groove 213, the cartridge 320 reaches the maximum distance of inwards retraction.

[0045] In one embodiment, as shown in Figure 3 , Figure 5 As shown, the second end of the telescopic groove 212 is provided with a second limiting groove 214, the opening direction of the second limiting groove 214 is perpendicular to the opening direction of the telescopic groove 212, and the second limiting groove 214 is arranged towards the second side of the telescopic groove 212. Specifically, the second limiting groove 214 is in communication with the telescopic groove 212, and the guide column 410 can move into the second limiting groove 214 during the movement in the telescopic groove 212, thereby playing a limiting role for limiting the movement distance of the inner barrel 300 in the guide rail sleeve 210 along another direction, so as to limit the movement distance of the cartridge 320 of the inner barrel 300 in another direction, that is, to limit the adjustment distance of the cartridge 320 in another direction. The second limiting groove 214 is used to limit the distance of the cartridge 320 to be outwardly protruded to the pen shell 100, and when the guide column 410 is located in the second limiting groove 214, the cartridge 320 reaches the maximum distance of outward protrusion.

[0046] In one embodiment, as shown in Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the cross-sectional shape of the pen barrel 110 is square, circular, oval, and triangular. Specifically, the cross-sectional shape of the pen barrel 110 can be selected according to different usage requirements and ergonomic principles, which is not specifically limited in the present embodiment. For example, the cross-sectional shape of the pen barrel 110 is square, with clear edges and lines, which can provide a stronger grip and prevent the pen barrel 110 from sliding in the hand; for another example, the cross-sectional shape of the pen barrel 110 is circular, with no edges and corners, smooth transition, easy to hold and comfortable; for another example, the cross-sectional shape of the pen barrel 110 is oval, similar to a circle but with a longer axis and a shorter axis, combining the comfort of a circular pen barrel 110 and having a certain directionality, the long axis can provide better grip stability, while the short axis reduces the possibility of rolling; for another example, the cross-sectional shape of the pen barrel 110 is triangular, with three clear corners and three edges, for specific purposes such as preventing rolling, correcting pen holding posture or providing stress relief. The stability of the triangle and the design of the corners can prevent rolling, and the edges of the triangle can serve as a guide for holding the pen, helping the user to maintain the correct pen holding posture to relieve writing fatigue.

[0047] In one embodiment, as shown in Figure 1 、 Figure 2 and Figure 6 , the retractable marker 10 further comprises a pen sleeve 500 movably sleeved on the second end of the pen shell 100. Specifically, by sleeving the pen sleeve 500 on the pen shell 100, the function of protecting the ink cartridge 320 of the pen inner barrel 300 can be achieved, effectively preventing the ink cartridge 320 from being damaged due to accidental impact or friction, also preventing the ink from drying out, maintaining the wet state of the ink cartridge 320, and at the same time, blocking impurities such as dust and dirt from adhering to the ink cartridge 320, thereby maintaining the cleanliness and smoothness of the ink cartridge 320.

[0048] Compared with the prior art, the utility model has at least the following advantages:

[0049] The utility model provides a kind of retractable marker, by being equipped with spiral groove on the side wall of the accommodating cavity of pen shell, rotating plug is rotationally arranged on pen shell, guide rail sleeve is provided on rotating plug, pen inner barrel is arranged in accommodating cavity, and the second end of cooperation pen inner barrel is movably arranged in the telescopic cavity of guide rail sleeve, and the guide column on pen inner barrel projects to the outside of telescopic groove in spiral groove, when rotating rotating plug, it can drive guide rail sleeve and pen inner barrel in guide rail sleeve rotate, the guide column on pen inner barrel moves in spiral groove, and moves in telescopic groove on guide rail sleeve, can make the position of pen inner barrel change in guide rail sleeve, to make the first end of pen inner barrel movably project to the second end of pen shell, realize the adjustment of the length of the tip of retractable marker, and under the guidance of guide rail sleeve, the first end of pen inner barrel can stably movably project to the second end of pen shell.

[0050] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation manners of the present application. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and also impossible to exhaust all the implementation manners. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A retractable marker, characterized by, The utility model provides a pen, including: The inside of pen shell is provided with accommodating cavity, spiral groove is provided on the lateral wall of accommodating cavity; Rotary plug is rotationally arranged on the first end of pen shell, guide rail sleeve is arranged on rotary plug, telescopic cavity is provided on guide rail sleeve, telescopic groove is provided on the lateral wall of telescopic cavity; Pen inner container is arranged in accommodating cavity, the first end of pen inner container is movably projected to the second end of pen shell, the second end of pen inner container is movably arranged in telescopic cavity, guide post is arranged on pen inner container, the first end of guide post is connected with pen inner container, the second end of guide post is projected to the outside of telescopic groove and located in spiral groove.

2. The retractable marker according to claim 1, wherein The pen inner container includes ink cylinder and pen core, the ink cylinder is movably arranged in the telescopic cavity, the first end of the pen core is connected with the first end of the ink cylinder, and the first end of the pen core is at least partially located in the ink cylinder, the second end of the pen core is movably projected to the second end of the pen shell, and the guide post is arranged on the second end of the ink cylinder.

3. A retractable marker according to claim 2, wherein, The pen shell includes pen barrel and pen mouth, the accommodating cavity is provided on the pen barrel, the lateral wall of the accommodating cavity is provided with rotating groove, the rotary plug is rotationally arranged on the first end of the pen barrel, the rotating block is arranged on the rotary plug, the rotating block is located in the rotating groove, the first side of the rotating groove is communicated with the spiral groove, the second side of the rotating groove has a guide inclined surface, the guide rail sleeve is embedded on the rotary plug, and the pen mouth is screwed on the second end of the pen barrel.

4. The retractable marker according to claim 2, wherein The pen inner container further includes a protective shell, the protective shell is sleeved on the pen core, the first end of the protective shell is connected with the ink cylinder, and the pen core is at least partially projected to the outside of the second end of the protective shell.

5. A retractable marker according to claim 4, wherein An indication mark is arranged on the outside surface of the protective shell.

6. The retractable marker according to claim 2, wherein Further including: The ink cylinder includes cylinder body and cover body, the cylinder body is provided with ink storage cavity, the first end of the pen core is connected with the first end of the cylinder body, and the first end of the pen core is at least partially located in the ink storage cavity, the cover body is covered on the second end of the cylinder body, the cover body movably closes the ink storage cavity, the guide seat is arranged on the cover body, and the guide post is arranged on the guide seat.

7. The retractable marker of claim 1, wherein A first limiting groove is provided on the first end of the telescopic groove, the opening direction of the first limiting groove is perpendicular to the opening direction of the telescopic groove, and the first limiting groove is arranged towards the first side of the telescopic groove.

8. A retractable marker according to claim 7, wherein A second limiting groove is provided on the second end of the telescopic groove, the opening direction of the second limiting groove is perpendicular to the opening direction of the telescopic groove, and the second limiting groove is arranged towards the second side of the telescopic groove.

9. The retractable marker according to claim 3, wherein The cross section shape of the pen barrel is square, circular, oval or triangular.

10. The retractable marker according to claim 1, wherein Further including: The pen sleeve is movably sleeved on the second end of the pen shell.

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