Writing pen

Abstract

The utility model discloses a writing pen, which comprises a pen body, a pen core and a pen cap, the movable mechanism is rotatably connected to the pen body and at least comprises a lifting assembly; the marking body is movably arranged on the movable mechanism, and at least part of the marking body abuts against the lifting assembly; the marking body has a storage state and an exhibition state, and at least part of the marking body is hidden in the movable mechanism in the storage state; in the exhibition state, at least part of the marker protrudes out of the top of the movable mechanism; the pen body and / or the movable mechanism are / is rotated, the lifting assembly can move upwards relative to the movable mechanism, and the marking body is lifted upwards, so that the marking body is switched from the storage state to the exhibition state. When in use, the marking body is shielded by the movable mechanism, when the movable mechanism is rotated, the marking body can extend out of the top of the movable mechanism, the marking body can be switched from an exhibition state to a storage state once rotation is stopped or the rotating speed of the movable mechanism is reduced, the use interestingness is high, and the overall structure is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of stationery, in particular to a writing pen. Background Art

[0002] Chinese patent CN201333866Y discloses "A writing pen", which includes a pen cap, a pen clip, a pen body and a transmission assembly. The pen cap is provided with a rotating assembly, which includes at least two rotating parts, and the two rotating parts are rotatably connected to the transmission assembly. When the pen is in use, the rotating parts rotate and unfold, and when the pen is in storage, the rotating parts are folded together. The writing pen with the above structure has good appearance and high interest, but its structure is relatively complex and has a large volume.

[0003] Chinese patent CN210759924U discloses a "writing pen", which includes a pen holder, a pen cap and a rotating assembly. The rotating assembly can rotate under the action of an external force, so that the user can operate the rotating assembly to rotate it clockwise or counterclockwise, enriching the function of the writing pen and providing better interest. The structure of the above-mentioned writing pen is relatively simple, but the interest and aesthetics are poor. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a writing pen, which can realize the upward display of a marking body through rotation. Once the rotation stops, the marking body automatically falls to a storage state, which is highly interesting and small in size.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a writing pen, comprising:

[0006] A pen body, with a refill inside;

[0007] A movable mechanism is rotatably connected to the pen body and comprises at least a lifting assembly;

[0008] A marking body, movably disposed on the movable mechanism, at least part of which abuts against the lifting assembly;

[0009] The marking body has a storage state and an exhibition state. In the storage state, at least part of the marking body is hidden inside the movable mechanism; in the exhibition state, at least part of the marking body protrudes from the top of the movable mechanism; by rotating the pen body and / or the movable mechanism, the lifting assembly can move upward relative to the movable mechanism to lift the marking body upward, so that the marking body is switched from the storage state to the exhibition state.

[0010] Furthermore, the movable mechanism includes a shell rotatably connected to the top of the pen body, and a climbing track formed on the shell.

[0011] Furthermore, the climbing track is a spiral slide rail formed on the inner wall of the shell, and the lifting assembly includes a counterweight ball, the weight of the counterweight ball is greater than the weight of the marking body, and the rotation of the pen body and / or the movable mechanism drives the counterweight ball to rotate, and the rotational centrifugal force generated drives the counterweight ball to move upward along the spiral slide rail to lift the marking body that is against the counterweight ball upward.

[0012] Furthermore, the climbing track is an inclined slide rail formed on the inner wall of the shell, and the lifting assembly includes a counterweight ball, the weight of the counterweight ball is greater than the weight of the marking body, and the rotation of the pen body and / or the movable mechanism drives the counterweight ball to rotate, and the rotational centrifugal force generated drives the counterweight ball to move upward along the inclined slide rail to lift the marking body that is against the counterweight ball upward.

[0013] Furthermore, the inclined slide rail extends obliquely from bottom to top in a flared shape, and the number of the counterweight balls is one or two or more. When the number of the counterweight balls is an even number, they are symmetrically distributed around the marking body.

[0014] Furthermore, a hollow accommodating chamber is formed inside the shell, and the climbing track is an axial gap formed on the side wall of the hollow accommodating chamber. The lifting assembly includes a main body extending into the hollow accommodating chamber, a counterweight block connected to the top of the main body, and a climbing action block arranged at the bottom of the main body, and the climbing action block extends into the axial gap. The rotation of the pen body and / or the movable mechanism drives the counterweight block to rotate, and the rotational centrifugal force or eccentric rotational force generated drives the climbing action block to cooperate with the side wall of the hollow accommodating chamber, so that the climbing action block moves upward along the axial gap to lift the marking body that is against the counterweight block upward.

[0015] Furthermore, the outer diameter of the body is smaller than the inner diameter of the hollow accommodating cavity, and the thickness of the climbing action block is smaller than the width of the axial gap.

[0016] Furthermore, an extension section is connected to the top of the shell, the interior of the extension section is hollow to form a movable channel for the marker to extend out, and the extension section and / or the marker form an anti-detachment convex edge to prevent the marker from detaching.

[0017] Furthermore, the top of the pen body is provided with a mounting post, which is rotatably connected to the bottom of the shell through a bearing, and the bottom of the marking body forms an internally hollow sleeve, which is movably sleeved on the mounting post.

[0018] Furthermore, when the movable mechanism is rotated in one direction and the rotation speed of the movable mechanism reaches a point where the lifting component generates an upward lifting force greater than the gravity of the marking body, the marking body switches from the stored state to the displayed state; when the rotation is stopped or the rotation speed of the movable mechanism decreases, the marking body automatically falls down and switches from the deployed state to the stored state; or, when the movable mechanism is rotated in two opposite directions and the rotation speed of the movable mechanism reaches a point where the lifting component generates an upward lifting force greater than the gravity of the marking body, the marking body can switch from the stored state to the displayed state; when the rotation is stopped or the rotation speed of the movable mechanism decreases, the marking body automatically falls down and switches from the deployed state to the stored state.

[0019] Furthermore, in the displayed state, the marking body as a whole protrudes from the top of the movable mechanism, and in the stored state, the marking body is completely hidden inside the movable mechanism.

[0020] Furthermore, the shell is made of transparent material.

[0021] The beneficial effects of the utility model are: 1) when the writing pen is used, the marking body is blocked by the movable mechanism. When the movable mechanism is rotated, the marking body can be extended from the top of the movable mechanism, and as long as the rotation speed of the movable mechanism reaches a certain speed, the lifting component generates an upward lifting force greater than the gravity of the marking body, and the marking body is always in the display state. Once the rotation stops or the rotation speed of the movable mechanism decreases, the marking body can be switched from the display state to the storage state, which is highly interesting to use, and the overall structure is simple and will not increase the volume; 2) the marking body can be of any shape and structure, and the marking body can be easily disassembled and replaced, which further increases the interest of use and provides a good user experience; 3) the lifting mechanism has various structural forms, is easy to process, and is easy to manufacture; 4) when the shell is made of transparent material, the user can intuitively feel the activities of the lifting component under the action of the rotating centrifugal force, which is more interesting and educational. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the first embodiment of the present invention, in which the marking body is in a stored state.

[0023] Figure 2 This is a three-dimensional diagram of the first embodiment of the present invention, in which the marking body is in an unfolded state.

[0024] Figure 3 This is a cross-sectional view of the first embodiment of the present invention, and the marking body is in the storage state at this time.

[0025] Figure 4 for Figure 3 A magnified view of the structure in Figure 2.

[0026] Figure 5 It is a three-dimensional diagram of the shell in the first embodiment of the present utility model.

[0027] Figure 6 It is a partial stereogram of the first embodiment of the utility model.

[0028] Figure 7 This is a cross-sectional view of the second embodiment of the present invention, at which time the marking body is in a stored state.

[0029] Figure 8 for Figure 7 Enlarged view of the structure at point B in the figure.

[0030] Fig. 9 It is a three-dimensional diagram of the shell in the second embodiment of the present utility model.

[0031] Fig.10 It is a partial stereogram of the second embodiment of the utility model.

[0032] Fig.11 This is a cross-sectional view of the third embodiment of the present invention, in which the marking body is in a stored state.

[0033] Fig.12 for Fig.11 Enlarged view of the structure at position C in the figure.

[0034] Fig.13 It is a three-dimensional diagram of the lifting assembly in the third embodiment of the present utility model.

[0035] Fig.14 It is a three-dimensional diagram of the shell in the third embodiment of the present utility model.

[0036] Fig.15 It is a top view of the matching structure of the shell and the lifting assembly in the third embodiment of the present utility model.

[0037] Fig.16 It is a partial stereogram of the third embodiment of the present utility model.

[0038] Among them, 1-pen body, 11-pen core, 12-mounting column, 2-movable mechanism, 21-shell, 211-hollow accommodating chamber, 22-spiral slide rail, 23-inclined slide rail, 24-axial gap, 25-extension section, 251-movable channel, 252-notch groove, 26-anti-slip convex edge, 3-lifting assembly, 31-counterweight ball, 32-main body, 33-counterweight block, 34-climbing action block, 4-marking body, 41-sleeve, 5-bearing. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0040] Embodiment 1

[0041] like Figure 1-Figure 4 As shown, a writing pen comprises a pen body 1 with a pen core 11 inside, a movable mechanism 2 rotatably connected to the pen body 1, and a marking body 4 arranged in the movable mechanism 2, wherein the movable mechanism 2 at least comprises a lifting assembly 3, and at least a part of the marking body 4 abuts against the lifting assembly 3. The matching structure of the pen body 1 and the pen core 11 can be any structure in the prior art, and will not be described in detail or limited.

[0042] The marking body 4 has a storage state and an exhibition state. In the storage state, at least a portion of the marking body 4 is hidden inside the movable mechanism 2. Figure 1 As shown, in this embodiment, the marking body 4 is entirely hidden inside the movable mechanism 2. Of course, in other embodiments, in the storage state, most of the marking body 4 is hidden inside the movable mechanism 2, but not necessarily all of it, and there is no specific limitation.

[0043] In the displayed state, at least part of the marking body 4 protrudes from the top of the movable mechanism 2, such as Figure 2 As shown, in this embodiment, the marking body 4 as a whole protrudes from the top of the movable mechanism 2. Of course, in other embodiments, it can also be in the display state, and most of the marking body 4 protrudes from the outside of the movable mechanism 2, which is not specifically limited.

[0044] The marking body 4 can be any shape such as numbers, letters, cartoon shapes, etc., without specific limitation.

[0045] Rotating the pen body 1 and / or the movable mechanism 2 here means rotating only the pen body 1 to drive the movable mechanism 2 to rotate, or directly driving the movable mechanism 2, or rotating the pen body 1 and the movable mechanism 2 at the same time, so that the lifting component 3 can move upward relative to the movable mechanism 2, thereby lifting the marking body 4 upward, so that the marking body 4 is switched from the storage state to the display state. Of course, in most cases of use, the movable mechanism 2 is directly driven to rotate.

[0046] The movable mechanism 2 includes a housing 21 rotatably connected to the top of the pen body 1, and a climbing track formed on the housing 21. Specifically, Figure 3-Figure 6As shown, in this embodiment, the interior of the shell 21 is hollow, and the climbing track is a spiral slide rail 22 formed on the inner wall of the shell 21. Specifically, the spiral slide rail 22 is a spiral plate structure protruding from the interior of the shell 21 toward the center.

[0047] The lifting assembly 3 includes a counterweight ball 31, the weight of which is greater than the weight of the marking body 4. The rotating centrifugal force generated by the rotation of the movable mechanism 2 to drive the counterweight ball 31 to rotate can drive the counterweight ball 31 to move upward along the spiral slide 22. Here, the counterweight ball 31 can move upward along the lower surface of the spiral slide 22, or along the upper surface of the spiral slide 22. Alternatively, the spiral slide 22 is not a plate structure as shown in the figure, but a slot structure. In this case, the counterweight ball 31 moves upward along the two side walls of the spiral slide 22, and there is no specific limitation. The number of counterweight balls 31 can be one, or two or more, and there is no specific limitation. In this embodiment, the number of counterweight balls 31 is one.

[0048] Since the marking body 4 is movably arranged in the movable mechanism 2 and abuts against the lifting assembly 3 , the marking body 4 is lifted upward under the support of the counterweight ball 31 , so that the marking body 4 is displayed from the top of the shell 21 .

[0049] In this embodiment, a hollow sleeve 41 is formed at the bottom of the marking body 4, and a mounting post 12 is provided at the top of the pen body 1. The mounting post 12 is rotatably connected to the bottom of the housing 21 through a bearing 5, and at the same time, the sleeve 41 is movably sleeved on the mounting post 12. The overall assembly structure is more stable, and the sleeve 41 at the bottom of the marking body 4 can climb up or fall along the mounting post 12.

[0050] In order to facilitate the assembly of the overall structure and to extend the movable path of the marker 4, an extension section 25 is connected to the top of the shell 21, that is, the movable mechanism 2 also includes an extension section 25, the interior of the extension section 25 is hollow to form a movable channel 251 for the marker 4 to extend, and the extension section 25 can be threadedly connected to the top of the shell 21, or the two can be tightly matched. Therefore, the weighted sphere 21 and the marker 4 can be placed in the shell 21 first, and then the extension section 25 and the shell 21 can be assembled and connected. Therefore, the marker 4 can be replaced at will, and markers 4 of different shapes can be used on the same writing pen, which greatly increases the fun and provides a good user experience.

[0051] In order to prevent the marking body 4 from detaching upward from the housing 21, an anti-detachment convex edge 26 is formed on the outer ring of the bottom end of the sleeve 41, so that when the marking body 4 protrudes upward from the housing 21 and the extension section 25, the anti-detachment convex edge 26 can abut against the lower end surface of the extension section 25 to prevent the marking body 4 from continuing to lift upward and detach. Of course, when the weighted ball 31 and the marking body 4 are in contact, the anti-detachment convex edge 26 can also increase the contact area between the two.

[0052] In the initial state, it means that the writing pen is in a normal writing state or is placed vertically or horizontally, and the marking body 4 falls into the movable mechanism 2, or the marking body 4 is blocked by the shell 21 and the extension section 25, that is, the marking body 4 is in the storage state; when in use, the movable mechanism 2 is rotated in one direction. In this embodiment, the movable mechanism 2 needs to be rotated in the extension direction of the spiral slide rail 22. Once the rotation speed of the movable mechanism 2 reaches the point where the counterweight ball 31 produces an upward lifting force greater than the gravity of the marking body 4, under the action of the rotating centrifugal force, the counterweight ball 31 moves upward along the spiral slide rail 22, thereby lifting the marking body 4 upward against the bottom of the sleeve 41, so that the marking body 4 protrudes from the top of the movable mechanism 2, completing the switch from the storage state to the display state. As long as a certain rotation speed is guaranteed, it can always be in the display state; once the movable mechanism 2 stops rotating or the rotation speed of the movable mechanism 2 drops to a level that is insufficient to lift the counterweight ball 31 upward, under the action of gravity, the counterweight ball 31 moves downward along the spiral slide rail 22, and the marking body 4 automatically falls to the initial state.

[0053] Embodiment 2

[0054] like Figure 7-10 As shown, in this embodiment, the interior of the housing 21 is hollow, and the climbing track is an inclined slide rail 23 formed on the inner wall of the housing 21. Specifically, the inclined slide rail 23 extends obliquely from bottom to top in a flared shape, that is, Figure 8 The direction shown is used as an example to illustrate that the inclined slide rail 23 extends obliquely from bottom to top in a direction away from the central axis of the housing 21 .

[0055] The number of the weighted spheres 31 is one or two or more. In this embodiment, the number of the weighted spheres 31 is four, and the number of the inclined rails 23 is the same as the number of the weighted spheres 31, which is also four. The four inclined rails 23 are evenly spaced and distributed around the shell 21. In other embodiments, the number of the weighted spheres 31 can be an even number such as two or six. In this case, the distribution of the inclined rails 23 can make the weighted spheres 31 symmetrically distributed around the marking body 4, so that the upward lifting force on the marking body 4 is more balanced.

[0056] In order to extend the moving path of the marking body 4 , an extension section 25 is connected to the top of the shell 21 , and a notch groove 252 that can cooperate with the anti-slip convex edge 26 is formed on the lower end surface of the extension section 25 .

[0057] When in use, different from the first embodiment, the movable mechanism 2 is rotated in two opposite directions. Under the action of the rotating centrifugal force, the counterweight ball 31 can move upward along the inclined slide rail 23, thereby lifting the marking body 4 upward against the bottom of the sleeve 41, so that the marking body 4 protrudes from the top of the movable mechanism 2, completing the switch from the storage state to the display state. As long as a certain rotation speed is guaranteed, it can always be in the display state; once the movable mechanism 2 stops rotating or the rotation speed of the movable mechanism 2 drops to a level that is insufficient to lift the counterweight ball 31 upward, under the action of gravity, the counterweight ball 31 moves downward along the spiral slide rail 22, and the marking body 4 automatically falls to the initial state.

[0058] The other structures are the same as those in the first embodiment and will not be described in detail.

[0059] Embodiment 3

[0060] like Figure 11-Figure 16 As shown, in this embodiment, a hollow accommodating chamber 211 is formed inside the shell 21, the height of the hollow accommodating chamber 211 is less than the height of the shell 21, and the hollow accommodating chamber 211 and the shell 21 are coaxially arranged. The climbing track is an axial gap 24 formed on the side wall of the hollow accommodating chamber 211. Specifically, the axial gap 24 runs through the entire height direction of the hollow accommodating chamber 211, and the top is open.

[0061] like Fig.13 As shown, the lifting assembly 3 includes a body 32 extending into the hollow accommodating chamber 211, a counterweight block 33 connected to the top of the body 32, and a climbing action block 34 arranged at the bottom of the body 32. In this embodiment, the counterweight block 33 is a fan-shaped counterweight structure connected to the outer wall of the top of the body 32, and the climbing action block 34 is a flat plate structure vertically connected to the outer wall of the body 32. In the initial state, the climbing action block 34 extends into the axial gap 24 and is located at the bottom of the axial gap 24, and the counterweight block 33 is mounted on the top surface of the hollow accommodating chamber 211. As shown in FIG. Fig.15 As shown, the outer diameter of the body 32 is smaller than the inner diameter of the hollow accommodating chamber 211 , and the thickness of the climbing action block 32 is smaller than the width of the axial gap 24 .

[0062] When the movable mechanism 2 rotates, due to the movable gap between the main body 32 and the hollow accommodating chamber 211, and the movable gap between the climbing action block 32 and the axial gap 24, the rotation of the pen body 1 drives the rotation of the counterweight block 33 to generate a rotational centrifugal force or an eccentric rotational force that drives the climbing action block 34 to cooperate with the side wall of the hollow accommodating chamber 211, so that the climbing action block 34 moves upward along the axial gap 24, thereby lifting the marking body 4 that is against the counterweight block 33 upward. The rotation of the counterweight block 33 here refers to its small-amplitude rotation, and the cooperation of the climbing action block 34 with the side wall of the hollow accommodating chamber 211 refers to the climbing action block 34, which, as the counterweight block 33 rotates, continuously hits the side walls of the hollow accommodating chamber 211 on both sides of the axial gap 24 under the rotational centrifugal force or the eccentric rotational force to achieve the climbing effect.

[0063] In order to prevent the marking body 4 from detaching upward from the shell 21, an anti-detachment protrusion 26 is formed on the inner circle of the top end of the extension section 25, and an anti-detachment protrusion 26 can also be formed at the lower end of the marking body 4. When the marking body 4 protrudes upward from the shell 21 and the extension section 25, the anti-detachment protrusion 26 can prevent the marking body 4 from continuing to rise upward and detach.

[0064] When in use, unlike the first embodiment, the movable mechanism 2 is rotated in two opposite directions. Once the rotation speed of the movable mechanism 2 reaches the point where the lifting assembly 3 generates an upward lifting force greater than the gravity of the marking body 4, the climbing action block 12 can move upward along the axial gap 24, so that the main body 32 and the counterweight block 33 push the marking body 4 upward, so that the marking body 4 protrudes from the top of the movable mechanism 2, completing the switch from the storage state to the exhibition state. As long as a certain rotation speed is guaranteed, it can always be in the exhibition state; once the movable mechanism 2 stops rotating or the rotation speed of the movable mechanism 2 drops to a level that is insufficient to lift the counterweight ball 31 upward, under the action of gravity, the climbing action block 12 moves downward along the axial gap 24, and the marking body 4 automatically falls to the initial state.

[0065] In this embodiment, no sleeve 41 is provided below the marking body 4, and other structures are the same as those in the first embodiment, which will not be described in detail.

[0066] The above specific implementation modes are used to explain the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A writing pen, characterized in that: include: A pen body (1) having a pen core (11) disposed therein; A movable mechanism (2) is rotatably connected to the pen body (1), and comprises at least a lifting assembly (3); A marking body (4) is movably arranged on the movable mechanism (2), and at least part of the marking body is in contact with the lifting assembly (3); The marking body (4) has a storage state and an exhibition state. In the storage state, at least a portion of the marking body (4) is hidden inside the movable mechanism (2); in the exhibition state, at least a portion of the marking body (4) protrudes from the top of the movable mechanism (2); by rotating the pen body (1) and / or the movable mechanism (2), the lifting component (3) can move upward relative to the movable mechanism (2) to lift the marking body (4) upward, so that the marking body (4) switches from the storage state to the exhibition state.

2. The writing pen according to claim 1, characterized in that: The movable mechanism (2) comprises a shell (21) rotatably connected to the top of the pen body (1), and a climbing track formed on the shell (21).

3. The writing pen according to claim 2, characterized in that: The climbing track is a spiral slide rail (22) formed on the inner wall of the shell (21); the lifting assembly (3) includes a counterweight ball (31); the weight of the counterweight ball (31) is greater than the weight of the marking body (4); the rotation of the pen body (1) and / or the movable mechanism (2) drives the counterweight ball (31) to rotate, and the rotational centrifugal force generated drives the counterweight ball (31) to move upward along the spiral slide rail (22), so as to lift the marking body (4) that is against the counterweight ball (31) upward.

4. The writing pen according to claim 2, characterized in that: The climbing track is an inclined slide rail (23) formed on the inner wall of the shell (21); the lifting assembly (3) includes a counterweight ball (31); the weight of the counterweight ball (31) is greater than the weight of the marking body (4); the pen body (1) and / or the movable mechanism (2) rotate to drive the counterweight ball (31) to rotate, and the rotational centrifugal force generated drives the counterweight ball (31) to move upward along the inclined slide rail (23), so as to lift the marking body (4) that is against the counterweight ball (31) upward.

5. The writing pen according to claim 4, characterized in that: The inclined slide rail (23) extends obliquely from bottom to top in a flared shape. The number of the counterweight spheres (31) is one or two or more. When the number of the counterweight spheres (31) is an even number, they are symmetrically distributed around the marking body (4).

6. The writing pen according to claim 2, characterized in that: A hollow accommodating chamber (211) is formed inside the shell (21); the climbing track is an axial gap (24) formed on the side wall of the hollow accommodating chamber (211); the lifting assembly (3) comprises a body (32) extending into the hollow accommodating chamber (211), a counterweight (33) connected to the top of the body (32), and a climbing action block (34) arranged at the bottom of the body (32); the climbing action block (34) extends into the axial gap (24); the rotation of the pen body (1) and / or the movable mechanism (2) drives the counterweight (33) to rotate, thereby generating a rotational centrifugal force or an eccentric rotational force that drives the climbing action block (34) to cooperate with the side wall of the hollow accommodating chamber (211), so that the climbing action block (34) moves upward along the axial gap (24) to lift the marking body (4) that is against the counterweight (33) upward.

7. The writing pen according to claim 6, characterized in that: The outer diameter of the body (32) is smaller than the inner diameter of the hollow accommodating chamber (211), and the thickness of the climbing action block (34) is smaller than the width of the axial gap (24).

8. The writing pen according to claim 3, 4 or 6, characterized in that: The top of the shell (21) is connected to an extension section (25), the interior of the extension section (25) is hollow to form a movable channel (251) for the marking body (4) to extend out, and the extension section (25) and / or the marking body (4) form an anti-detachment convex edge (26) to prevent the marking body (4) from detaching.

9. The writing pen according to claim 3 or 4, characterized in that: The top of the pen body (1) is provided with a mounting column (12), and the mounting column (12) is rotatably connected to the bottom of the housing (21) via a bearing (5). The bottom of the marking body (4) forms an internally hollow sleeve (41), and the sleeve (41) is movably sleeved on the mounting column (12).

10. The writing pen according to claim 1, characterized in that: The movable mechanism (2) is rotated in one direction, and when the rotation speed of the movable mechanism (2) reaches a point where the lifting assembly (3) generates an upward lifting force greater than the gravity of the marking body (4), the marking body (4) switches from the stored state to the displayed state; when the rotation stops or the rotation speed of the movable mechanism (2) decreases, the marking body (4) automatically falls and switches from the displayed state to the stored state; Alternatively, when the movable mechanism (2) is rotated in two opposite directions and the rotation speed of the movable mechanism (2) reaches a point where the lifting assembly (3) generates an upward lifting force greater than the gravity of the marking body (4), the marking body (4) can be switched from the stored state to the displayed state; when the rotation stops or the rotation speed of the movable mechanism (2) decreases, the marking body (4) automatically falls and switches from the displayed state to the stored state.

11. The writing pen according to claim 1, characterized in that: In the displayed state, the marking body (4) as a whole protrudes from the top of the movable mechanism (2); in the stored state, the marking body (4) is completely hidden inside the movable mechanism (2).

12. The writing pen according to claim 2, characterized in that: The shell is made of transparent material.

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