Twist-to-open pen

Abstract

The utility model discloses a kind of rotating opening pens, including shell, the pen refill assembly of being sleeved in shell, sleeve and the blade of being movably arranged on sleeve are set on pen refill assembly, shell includes lower shell and the upper shell of being rotatably arranged on lower shell, pen refill assembly includes pen refill;Upper shell and lower shell are all cylindrical, sleeve and blade are all arranged in upper shell, upper shell has opposite upper opening and lower opening, and blade is located at upper opening place.This rotating opening pen of the utility model when using, when upper shell rotates relative to lower shell, upper shell drives blade to move relative to sleeve, to make upper opening close or open, when upper opening opens, pen refill can be replaced.Compared with traditional pen, when replacing pen refill, the rotating opening pen of the utility model is relatively simple to operate.

Description

Technical Field

[0001] This utility model relates to a rotating pen. Background Technology

[0002] Pens are essential stationery items in people's daily lives and work. They typically consist of a casing and a refill. The casing includes an upper shell and a lower shell that are detachably connected (e.g., threaded connection).

[0003] Traditional pens require separating the upper and lower shells when changing the refill, which is quite cumbersome. Utility Model Content

[0004] Therefore, it is necessary to provide a rotating pen that can solve the above problems.

[0005] A rotary-opening pen includes a housing, a pen refill assembly fitted inside the housing, a sleeve disposed on the pen refill assembly, and a blade movably disposed on the sleeve. The housing includes a lower shell and an upper shell rotatably disposed on the lower shell. The pen refill assembly includes a pen refill.

[0006] Both the upper shell and the lower shell are cylindrical. The sleeve and the blade are both disposed inside the upper shell. The upper shell has an upper opening and a lower opening, and the blade is located at the upper opening.

[0007] When the upper shell rotates relative to the lower shell, the upper shell drives the blade to move relative to the sleeve, thereby causing the blade to move relative to the sleeve to close the upper opening or open the upper opening. When the upper opening is closed, the upper end of the pen refill passes through the sleeve and abuts against the blade.

[0008] In one embodiment, the sleeve near the blade and the blade near the sleeve are respectively provided with matching grooves and sliders, the groove having a first end and a second end;

[0009] When the upper shell rotates relative to the lower shell, the upper shell causes the blade to slide relative to the sleeve, thereby causing the slider to slide between the first end and the second end; when the slider slides to the first end, the sliding blade closes the upper opening; when the slider slides to the second end, the sliding blade slides open from the upper opening, thereby causing the upper opening to open.

[0010] In one embodiment, the upper shell is rotatably connected to the blade;

[0011] When the upper shell rotates relative to the lower shell, the blade rotates relative to the upper shell, thereby causing the blade to slide relative to the sleeve.

[0012] In one embodiment, the upper shell is provided with a rotating shaft, the blade is provided with a rotating hole, the rotating shaft passes through the rotating hole, and the upper shell rotates relative to the blade about the rotating shaft.

[0013] In one embodiment, the slider is disposed on the sleeve, and the groove is disposed on the blade;

[0014] When the upper opening is open, the first end is further away from the center of the sleeve than the second end.

[0015] In one embodiment, the side wall of the upper shell is provided with a through hole, and when the blade slides to the opening of the upper opening, the blade passes through the through hole and the rear part is exposed.

[0016] In one embodiment, the side wall of the upper shell is provided with a through hole, and the blade is provided with a protrusion, which is disposed in the through hole;

[0017] When the upper shell rotates relative to the lower shell, the sidewall of the through hole presses against the protrusion, thereby causing the blade to slide relative to the sleeve.

[0018] In one embodiment, the slider is disposed on the sleeve, and the groove is disposed on the blade;

[0019] When the upper opening is closed, the first end is further away from the center of the sleeve than the second end.

[0020] In one embodiment, the blade is generally triangular in shape, and the protrusion is located at one corner of the blade;

[0021] When the blade slides to the point where the upper opening opens, the protrusion is exposed after passing through the through hole.

[0022] In one embodiment, there are multiple blades arranged in a ring around the upper opening.

[0023] In one embodiment, the pen refill assembly further includes an inner shell sleeved within the outer shell, the pen refill being slidably disposed within the inner shell, and the sleeve being connected to the inner shell.

[0024] In one embodiment, the sleeve is connected to the inner shell via a spring, and the two ends of the spring are fixedly connected to the sleeve and the inner shell respectively. The upper shell, the blade, and the sleeve abut against each other in sequence under the elastic force of the spring, and the upper end of the pen refill passes through the spring and the sleeve in sequence.

[0025] In one embodiment, a reset member is provided between the pen refill and the inner shell. When the upper opening is open, the pen refill slides relative to the inner shell under the drive of the reset member, and the upper end of the pen refill extends outward from the upper opening.

[0026] In one embodiment, the end of the inner shell away from the sleeve is provided with a pen tip, and the tip of the pen refill is provided with a pen tip for penning through the pen tip and protruding outwards.

[0027] When this type of rotating pen is in use, the upper shell rotates relative to the lower shell, causing the upper shell to drive the blade to move relative to the sleeve, thereby causing the blade to move relative to the sleeve until the upper opening is opened, allowing the pen refill to be replaced.

[0028] Compared to traditional pens that require separating the upper and lower shells to replace the refill, this invention's rotating open pen only requires the upper shell to rotate relative to the lower shell to open the upper opening, thus allowing for refill replacement. This makes the operation much simpler. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the pen in one direction according to the first embodiment.

[0030] Figure 2 For example Figure 1 The diagram shows a partial exploded view of the pen in one direction when it is rotated to open.

[0031] Figure 3 For example Figure 1 The diagram shows a partial exploded view of the pen in another direction when rotated.

[0032] Figure 4 For example Figure 1 The diagram shows a partial exploded view of the pen in one direction of its open state when rotated.

[0033] Figure 5 For example Figure 1 The diagram shows an enlarged view of the rotating pen's sleeve and blades.

[0034] Figure 6 For example Figure 1 The diagram shows an enlarged view of the pen blades rotating to open in another direction.

[0035] Figure 7 For example Figure 6 The diagram shows an enlarged view of the blades in their open state.

[0036] Figure 8This is a three-dimensional structural diagram of the rotating pen in one direction, as shown in the second embodiment.

[0037] Figure 9 For example Figure 8 The diagram shows a partial exploded view of the pen in one direction when it is rotated to open.

[0038] Figure 10 For example Figure 8 The diagram shows a partial exploded view of the pen in another direction when rotated.

[0039] Figure 11 For example Figure 8 The diagram shows a three-dimensional structure of the pen in one direction of its open state when rotated.

[0040] Figure 12 For example Figure 11 The diagram shows a partial exploded view of the pen in one direction when it is rotated to open.

[0041] Figure 13 For example Figure 11 The diagram shows a partial exploded view of the pen in another direction when rotated.

[0042] Figure 14 For example Figure 8 The diagram shows an enlarged view of the rotating pen's sleeve and blades.

[0043] Figure 15 For example Figure 14 The diagram shows an enlarged view of the blades in their open state. Detailed Implementation

[0044] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0045] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention discloses a rotating open pen according to the first embodiment, including a housing 110, a pen refill assembly 120 sleeved in the housing 110, a sleeve 130 disposed on the pen refill assembly, and a blade 140 movably disposed on the sleeve. The housing 110 includes a lower shell 112 and an upper shell 114 rotatably disposed on the lower shell 112. The pen refill assembly 120 includes a pen refill 122.

[0046] Both the upper shell 114 and the lower shell 112 are cylindrical. The sleeve 130 and the blade 140 are both disposed inside the upper shell 114. The upper shell 114 has a relative upper opening 101 and a lower opening (not marked in the figure), and the blade 140 is located at the upper opening 101.

[0047] When the upper shell 114 rotates relative to the lower shell 112, the upper shell 114 drives the blade 140 to move relative to the sleeve 130, thereby causing the blade 140 to move relative to the sleeve 130 to close or open the upper opening 101. When the upper opening 101 is closed, the upper end of the pen refill 122 passes through the sleeve 130 and abuts against the blade 140.

[0048] When this type of rotating pen is in use, the upper shell 114 rotates relative to the lower shell 112, causing the upper shell 114 to drive the blade 140 to move relative to the sleeve 130, thereby causing the blade 140 to move relative to the sleeve 130 until the upper opening 101 opens, allowing the pen refill to be replaced.

[0049] Compared to traditional rotary pen opening pens that require separating the upper and lower shells to replace the pen refill, this utility model's rotary pen opening pens only require the upper shell 114 to rotate relative to the lower shell 112 to open the upper opening 101, thus allowing the pen refill to be replaced, making the operation much simpler.

[0050] Preferred, combined Figure 5 , Figure 6 and Figure 7 In this embodiment, the sleeve 130 near the blade 140 and the blade 140 near the sleeve 130 are respectively provided with matching grooves 142 and sliders 132. The groove 142 has a first end 1401 and a second end 1402.

[0051] When the upper shell 114 rotates relative to the lower shell 112, the upper shell 114 drives the blade 140 to slide relative to the sleeve 130, thereby causing the slider 132 to slide between the first end 1401 and the second end 1402. When the slider 132 slides to the first end 1401, the blade 140 closes the upper opening 101. When the slider 132 slides to the second end 1402, the blade 140 slides open from the upper opening 101, thereby opening the upper opening 101.

[0052] In this embodiment, the blade 140 and the sleeve 130 are slidably connected through the mating groove 142 and the slider 132, thereby realizing the opening and / or closing of the upper opening 101. In other embodiments, the blade 140 and the sleeve 130 can also achieve other movable connections through other mating structures, thereby realizing the opening and / or closing of the upper opening 101.

[0053] Specifically, referring to the accompanying drawings, in this embodiment, the side wall of the upper shell 114 is provided with a through hole 103, and the blade 140 is provided with a protrusion 144, which is disposed in the through hole 103.

[0054] When the upper shell 114 rotates relative to the lower shell 112, the side wall of the through hole 103 presses against the protrusion 144, thereby causing the blade 140 to slide relative to the sleeve 130.

[0055] Referring to the attached diagram, when the blade 140 slides to the opening 101, the protrusion 144 is exposed after passing through the through hole 103.

[0056] In this embodiment, the upper shell 114 drives the blade 140 to slide relative to the sleeve 130 through the above structure. In other embodiments, the upper shell 114 can also drive the blade 140 to slide relative to the sleeve 130 through other means.

[0057] Preferably, in conjunction with the accompanying drawings, in this embodiment, the slider 132 is disposed on the sleeve 130, and the groove 142 is disposed on the blade 140.

[0058] In other embodiments, the slider 132 may be disposed on the blade 140, and the groove 142 may be disposed on the sleeve 130.

[0059] Specifically, combined Figure 5 , Figure 6 and Figure 7 When the upper opening 101 is closed, the first end 1401 is further away from the center of the sleeve 130 than the second end 1402.

[0060] In this embodiment, the slide 142 is a blind slide; in other embodiments, the slide 142 may also be a through slide.

[0061] In this embodiment, the slide 142 is straight. In other embodiments, the slide 142 may also be curved or broken, for example, it may be arc-shaped.

[0062] Preferably, in this embodiment, there are multiple blades 140, and the multiple blades 140 are arranged in a ring around the upper opening 101.

[0063] Referring to the accompanying drawings, specifically in this embodiment, there are 5 blades 140. In other embodiments, there may be 3, 4, 6 or more blades 140.

[0064] Referring to the accompanying drawings, specifically in this embodiment, the blade 140 is generally triangular in shape, and the protrusion 144 is located at one corner of the blade 140.

[0065] Preferred, combined Figure 4 In this embodiment, the pen refill assembly 120 also includes an inner shell 124 sleeved inside the outer shell 110, the pen refill 122 is slidably disposed inside the inner shell 124, and the sleeve 130 is connected to the inner shell 124.

[0066] Combination Figure 3In this embodiment, the sleeve 130 is connected to the inner shell 124 by the spring 150. The two ends of the spring 150 are fixedly connected to the sleeve 130 and the inner shell 124 respectively. The upper shell 114, the blade 140 and the sleeve 130 abut against each other in sequence under the elastic force of the spring 150. The upper end of the pen refill 122 passes through the spring 150 and the sleeve 130 in sequence.

[0067] The upper shell 114, blade 140 and sleeve 130 abut against each other in sequence under the elastic force of spring 150, which can ensure that the slider 132 is always located in the groove 142, thus improving the overall stability.

[0068] Preferably, in this embodiment, a reset element (not shown in the figure) is also provided between the pen refill 122 and the inner shell 124.

[0069] Combination Figure 4 When the upper opening 101 is opened, the pen tip 122 slides relative to the inner shell 124 under the drive of the reset member, and the upper end of the pen tip 122 extends out from the upper opening 101.

[0070] Preferably, in conjunction with the accompanying drawings, in this embodiment, the end of the inner shell 124 away from the sleeve 130 is provided with a pen tip 126, and the tip of the pen core 122 is provided with a pen tip 128 for pen tip 128 to be exposed after pen tip 126 is inserted.

[0071] Combination Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 The present invention discloses a rotating open pen according to a second embodiment, including a housing 210, a pen refill assembly 220 sleeved in the housing 210, a sleeve 230 disposed on the pen refill assembly, and a blade 240 movably disposed on the sleeve. The housing 210 includes a lower shell 212 and an upper shell 214 rotatably disposed on the lower shell 212. The pen refill assembly 220 includes a pen refill 222.

[0072] Both the upper shell 214 and the lower shell 212 are cylindrical. The sleeve 230 and the blade 240 are both disposed inside the upper shell 214. The upper shell 214 has a relative upper opening 201 and a lower opening (not marked in the figure), and the blade 240 is located at the upper opening 201.

[0073] When the upper shell 214 rotates relative to the lower shell 212, the upper shell 214 drives the blade 240 to move relative to the sleeve 230, thereby causing the blade 240 to move relative to the sleeve 230 to close the upper opening 201 and / or open the upper opening 201. When the upper opening 201 is closed, the upper end of the pen refill 222 passes through the sleeve 230 and abuts against the blade 240.

[0074] When the rotating pen of this invention is in use, the upper shell 214 rotates relative to the lower shell 212, causing the upper shell 214 to drive the blade 240 to slide relative to the sleeve 230, thereby causing the blade 240 to move relative to the sleeve 230 until the upper opening 201 opens, so that the pen refill can be replaced.

[0075] Compared to traditional rotary pen opening pens that require separating the upper and lower shells to replace the pen refill, this utility model's rotary pen opening pens only require the upper shell 214 to rotate relative to the lower shell 212 to open the upper opening 201, thus allowing the pen refill to be replaced, making the operation much simpler.

[0076] Preferred, combined Figure 14 and Figure 15 In this embodiment, the sleeve 230 near the blade 240 and the blade 240 near the sleeve 230 are respectively provided with matching grooves 242 and sliders 232. The groove 242 has a first end 2401 and a second end 2402.

[0077] When the upper shell 214 rotates relative to the lower shell 212, the upper shell 214 drives the blade 240 to slide relative to the sleeve 230, thereby causing the slider 232 to slide between the first end 2401 and the second end 2402. When the slider 232 slides to the first end 2401, the blade 240 closes the upper opening 201. When the slider 232 slides to the second end 2402, the blade 240 slides open from the upper opening 201, thereby opening the upper opening 201.

[0078] In this embodiment, the blade 240 and the sleeve 230 are slidably connected by the mating groove 242 and the slider 232, thereby realizing the opening and / or closing of the upper opening 201. In other embodiments, the blade 240 and the sleeve 230 can also achieve other movable connections through other mating structures, thereby realizing the opening and / or closing of the upper opening 201.

[0079] More preferably, in conjunction with the accompanying drawings, in this embodiment, the upper shell 214 is rotatably connected to the blade 240.

[0080] When the upper shell 214 rotates relative to the lower shell 212, the blade 240 rotates relative to the upper shell 214, thereby causing the blade 240 to slide relative to the sleeve 230.

[0081] In this embodiment, the upper shell 214 drives the blade 240 to slide relative to the sleeve 230 through the rotational connection between the upper shell 214 and the blade 240. In other embodiments, the upper shell 214 can also drive the blade 240 to slide relative to the sleeve 230 through other means.

[0082] Specifically, referring to the accompanying drawings, in this embodiment, the upper shell 214 is provided with a rotating shaft 215, and the blade 240 is provided with a rotating hole 244. The rotating shaft 215 passes through the rotating hole 244, and the upper shell 214 rotates relative to the blade 240 with the rotating shaft 215 as the axis.

[0083] In this embodiment, the upper shell 214 and the blade 240 are rotatably connected by the rotating shaft 215 and the rotating hole 244. In other embodiments, the upper shell 214 and the blade 240 can also be rotatably connected by other means.

[0084] Preferably, in conjunction with the accompanying drawings, in this embodiment, the slider 232 is disposed on the sleeve 230, and the groove 242 is disposed on the blade 240.

[0085] In other embodiments, the slider 232 may be disposed on the blade 240, and the groove 242 may be disposed on the sleeve 230.

[0086] Specifically, combined Figure 15 When the upper opening 201 is opened, the first end 2401 is further away from the center of the sleeve 230 than the second end 2402.

[0087] In this embodiment, the slide 242 is a through groove; in other embodiments, the slide 242 may also be a blind groove.

[0088] In this embodiment, the slide 242 is straight. In other embodiments, the slide 242 may also be curved or broken, for example, it may be arc-shaped.

[0089] Referring to the accompanying drawings, in this embodiment, the side wall of the upper shell 214 is provided with a through hole 203. When the blade 240 slides to the opening of the upper opening 201, the blade 240 passes through the through hole 203 and the rear part is exposed.

[0090] Preferably, in this embodiment, there are multiple blades 240, which are arranged in a ring around the upper opening 201.

[0091] Referring to the accompanying drawings, specifically in this embodiment, there are 5 blades 240. In other embodiments, there may be 3, 4, 6 or more blades 240.

[0092] Referring to the accompanying drawings, specifically in this embodiment, the blade 240 is generally triangular in shape.

[0093] Preferably, in conjunction with the accompanying drawings, in this embodiment, the pen refill assembly 220 further includes an inner shell 224 sleeved inside the outer shell 210, the pen refill 222 is slidably disposed inside the inner shell 224, and the sleeve 230 is connected to the inner shell 224.

[0094] Referring to the accompanying drawings, in this embodiment, the sleeve 230 is connected to the inner shell 224 via a spring 250. The two ends of the spring 250 are fixedly connected to the sleeve 230 and the inner shell 224, respectively. The upper shell 214, the blade 240, and the sleeve 230 abut against each other in sequence under the elastic force of the spring 250. The upper end of the pen refill 222 passes through the spring 250 and the sleeve 230 in sequence.

[0095] The upper shell 214, blade 240 and sleeve 230 abut against each other in sequence under the elastic force of spring 250, which can ensure that the slider 232 is always located in the groove 242, thus improving the overall stability.

[0096] Preferably, in this embodiment, a reset element (not shown in the figure) is also provided between the pen refill 222 and the inner shell 224.

[0097] Referring to the attached diagram, when the upper opening 201 is opened, the pen tip 222 slides relative to the inner shell 224 under the drive of the reset component, and the upper end of the pen tip 222 extends outward from the upper opening 201.

[0098] Preferably, in conjunction with the accompanying drawings, in this embodiment, the tip of the pen refill 222 is provided with a pen tip 228.

[0099] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0100] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0101] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0102] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotating pen, characterized in that, The device includes a housing, a pen refill assembly fitted inside the housing, a sleeve disposed on the pen refill assembly, and a blade movably disposed on the sleeve. The housing includes a lower shell and an upper shell rotatably disposed on the lower shell. The pen refill assembly includes a pen refill. Both the upper shell and the lower shell are cylindrical. The sleeve and the blade are both disposed inside the upper shell. The upper shell has an upper opening and a lower opening, and the blade is located at the upper opening. When the upper shell rotates relative to the lower shell, the upper shell drives the blade to move relative to the sleeve, thereby causing the blade to move relative to the sleeve to close the upper opening or open the upper opening. When the upper opening is closed, the upper end of the pen refill passes through the sleeve and abuts against the blade.

2. The rotating open pen according to claim 1, characterized in that, The sleeve near the blade and the blade near the sleeve are respectively provided with matching sliding grooves and sliding blocks, and the sliding groove has a first end and a second end; When the upper shell rotates relative to the lower shell, the upper shell causes the blade to slide relative to the sleeve, thereby allowing the slider to slide between the first end and the second end; when the slider slides to the first end, the sliding blade closes the upper opening. When the slider slides to the second end, the sliding blade slides open from the upper opening, thereby opening the upper opening.

3. The rotating open pen according to claim 2, characterized in that, The upper shell is rotatably connected to the blade; When the upper shell rotates relative to the lower shell, the blade rotates relative to the upper shell, thereby causing the blade to slide relative to the sleeve.

4. The rotating open pen according to claim 3, characterized in that, The upper shell is provided with a rotating shaft, and the blade is provided with a rotating hole. The rotating shaft passes through the rotating hole, and the upper shell rotates relative to the blade with the rotating shaft as the axis.

5. The rotating open pen according to claim 3, characterized in that, The slider is disposed on the sleeve, and the groove is disposed on the blade; When the upper opening is open, the first end is further away from the center of the sleeve than the second end.

6. The rotating open pen according to claim 3, characterized in that, The side wall of the upper shell is provided with a through hole. When the blade slides to the opening of the upper opening, the blade passes through the through hole and the rear part is exposed.

7. The rotating open pen according to claim 2, characterized in that, The side wall of the upper shell is provided with a through hole, and the blade is provided with a protrusion, which is disposed in the through hole; When the upper shell rotates relative to the lower shell, the sidewall of the through hole presses against the protrusion, thereby causing the blade to slide relative to the sleeve.

8. The rotating open pen according to claim 7, characterized in that, The slider is disposed on the sleeve, and the groove is disposed on the blade; When the upper opening is closed, the first end is further away from the center of the sleeve than the second end.

9. The rotating open pen according to claim 8, characterized in that, The blade is generally triangular in shape, and the protrusion is located at one corner of the blade. When the blade slides to the point where the upper opening opens, the protrusion is exposed after passing through the through hole.

10. The rotating open pen according to any one of claims 1 to 9, characterized in that, There are multiple blades, and the multiple blades are arranged in a ring around the upper opening.

11. The rotating open pen according to claim 10, characterized in that, The pen refill assembly also includes an inner shell sleeved inside the outer shell, the pen refill being slidably disposed within the inner shell, and the sleeve being connected to the inner shell.

12. The rotating open pen according to claim 11, characterized in that, The sleeve is connected to the inner shell via a spring. The two ends of the spring are fixedly connected to the sleeve and the inner shell, respectively. The upper shell, the blade, and the sleeve abut against each other in sequence under the elastic force of the spring. The upper end of the pen refill passes through the spring and the sleeve in sequence.

13. The rotating open pen according to claim 12, characterized in that, A reset member is also provided between the pen refill and the inner shell. When the upper opening is opened, the pen refill slides relative to the inner shell under the drive of the reset member, and the upper end of the pen refill extends out from the upper opening.

14. The rotating open pen according to claim 13, characterized in that, The inner shell is provided with a pen tip at the end away from the sleeve, and the tip of the pen core is provided with a pen tip for penning the pen tip and protruding outside.

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