Interesting writing tool

Abstract

An interesting writing tool comprises a penholder, a refill, a press head and a rotating wheel, the refill is axially and movably installed in the penholder through an elastic reset piece, the press head is axially and movably installed at the tail end of the penholder, and the rotating wheel is rotatably installed in the penholder and located between the press head and the refill; the display part is clamped between the outer side of the rotating wheel and the inner side of the penholder and rotates synchronously with the rotating wheel, a plurality of patterns are circumferentially arranged on the outer side of the display part, and a display window is arranged on the side face of the penholder; when the pressing head is pressed, the rotating wheel rotates by a certain angle relative to the pen holder and generates axial displacement, so that the display piece is driven to display different patterns in turn through the display window, and the refill is driven to be switched between a refill returning position and a refill discharging position. According to the interesting writing tool, the refill does not need to be rotated when the patterns are displayed in turn, the overall universality is higher, and the user experience feeling is better.

Description

Technical Field

[0001] The present invention relates to the technical field of writing tools, and in particular to an interesting writing tool. Background Art

[0002] There is an interesting writing tool on the market that can switch the pattern display in the window on the side of the pen while pressing, which adds fun and provides a better user experience.

[0003] An existing interesting writing tool is disclosed in the Chinese utility model patent with authorization announcement number CN220904505U, and its structure is as follows: Figure 1 As shown, it includes a pen body 1a, a pen core 2a, an ejection mechanism 3a and a display mechanism 4a. The ejection mechanism 3a drives the pen core 2a to extend and retract relative to the pen body 1a through a telescopic locking mechanism 5a. The telescopic locking mechanism 5a includes a pressure rod member 6a, a guide rail member 7a and a locking member 8a. The locking member 8a is fixed on the pen core 2a so that the pen core 2a rotates together with the locking member 8a. The display mechanism 4a includes a window 9a opened on the side of the pen body 1a and patterns 10a arranged circumferentially on the side of the pen core 2a with upper and lower offsets. A spring 11a is provided between the bottom of the pen core 2a and the pen body 1a. When the pen core 2a is driven to extend and retract relative to the pen body 1a by the telescopic locking mechanism 5a, since the pen core 2a rotates together with the locking member 8a, the patterns 10a on the pen core 2a can be displayed one by one through the window 9a on the side of the pen body 1a. This interesting writing tool can realize the 360-degree rotation of the pattern 10a in stages when the writing tool is pressed to release or retract the writing core, thereby achieving the effect of synchronous presentation of function and vision.

[0004] However, the existing interesting writing tools still have the following technical problems: the pattern 10a is circumferentially arranged on the side of the pen core 2a, and the pen core 2a needs to be rotated each time it is pressed to display the pattern on the side of the pen core 2a in turn. The pen core 2a is usually long and has a large gap between the two sides and the pen body 1a. Therefore, it will produce a large shake and noise when rotating. In addition, the bottom of the pen core 2a is also pressed and fitted with the pen body 1a through the spring 11a, which makes it very easy for the spring 11a to twist and shift when the pen core 2a rotates, resulting in poor overall stability and a bad user experience. In addition, the pattern 10a is set on the pen core 2a, so the pen core 2a must be specially made. Each time the pen core 2a is used up, only the special pen core 2a can be replaced, and ordinary pen core 2a cannot be used because the pattern 10a cannot be displayed when using ordinary pen core 2a, which makes it lose its interesting function. Therefore, the overall versatility is not strong and the cost of use is high. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an interesting writing tool which does not require the refill to be rotated when patterns are displayed in turn, has stronger overall versatility, and provides a better user experience.

[0006] The technical solution of the present invention is: an interesting writing tool, comprising a pen barrel, a pen core, a push head and a rotating wheel, the pen core is axially movably installed in the pen barrel through an elastic reset member, the push head is axially movably installed at the tail end of the pen barrel, and the rotating wheel is rotatably installed in the pen barrel and is located between the push head and the pen core; it also includes a display piece clamped between the outer side of the rotating wheel and the inner side of the pen barrel and rotating synchronously with the rotating wheel, a plurality of patterns are arranged on the outer circumference of the display piece, and a display window is arranged on the side of the pen barrel; when the push head is pressed, the rotating wheel rotates a certain angle relative to the pen barrel and undergoes axial displacement, thereby driving the display piece to display different patterns in turn through the display window, and driving the pen core to switch between a core-returning position and a core-out position.

[0007] The working principle of the interesting writing tool of the present invention is as follows:

[0008] Assume that in the initial state the pen refill is at the core-out position, and the pen tip of the pen refill extends out of the pen barrel; when the push button is pressed, the wheel rotates a certain angle, and since the display piece rotates synchronously with the wheel, the display piece also rotates a corresponding angle, so that the previous pattern of the display piece exits the display window on the side of the pen barrel, and the next pattern in the circumferential direction of the display piece is displayed. At the same time, since the wheel also undergoes axial displacement while rotating, the pen refill is driven to switch from the core-out position to the core-return position, and the pen tip of the pen refill is retracted into the pen barrel; and so on, each time the push button is pressed, the display piece will rotate a certain angle with the wheel, so that different patterns on the display piece can be displayed in turn through the display window on the side of the pen barrel, achieving the effect of 360-degree rotation and presenting the pattern, and each time it is pressed, the wheel will also undergo axial displacement, so that the pen refill can switch between the core-return position and the core-out position.

[0009] After adopting the above structure, the present invention has the following advantages:

[0010] The interesting writing tool of the present invention adds a display piece that rotates synchronously with the rotating wheel to serve as a carrier of the pattern, so that when pressed, the rotation of the display piece can be used instead of the rotation of the pen core to display different patterns in turn, thereby achieving an effect of 360-degree rotation and presenting the pattern; and the display piece is more compact than the pen core structure, and is clamped between the rotating wheel and the pen body, with a smaller movable gap, so that the display piece shakes less when rotating, has better stability and silent effect, and provides a better user experience; in addition, because the pattern is arranged on the display piece instead of the pen core, there is no need to use a special pen core, and the overall versatility is stronger and the use cost is lower.

[0011] Preferably, the display window includes a first through hole and a second through hole arranged at intervals on the side of the pen holder. Providing two through holes can make the display area of ​​the pattern larger and the content richer; because the display piece can not only rotate circumferentially but also move axially, two through holes are provided in the upper and lower directions to match the movement trajectory of the display piece itself, which is more conducive to the presentation of the pattern.

[0012] Preferably, a slot is provided on one of the outer side of the rotating wheel and a block is provided on the other side of the display piece, and the display piece rotates synchronously with the rotating wheel through the slot and the block. This arrangement uses a simple slot and block structure to achieve radial positioning of the display piece and the rotating wheel, thereby reliably ensuring that the display piece rotates synchronously with the rotating wheel.

[0013] Preferably, the slot extends axially along the inner side of the display piece, and both ends of the slot are arranged to be openings. This arrangement makes it easier to quickly install the display piece and the rotating wheel.

[0014] Preferably, at least two of the card slots are arranged evenly on the inner side of the display element, and the number and position of the card blocks match the card slots. This arrangement makes the radial position between the display element and the rotating wheel more secure, so that the display element can rotate more stably and reliably with the rotating wheel.

[0015] Preferably, it also includes a guide rail member fixed at the rear end of the pen holder, the push head and the rotating wheel are both installed in the guide rail member, the push head is axially slidably matched with the guide rail member, a guide structure is provided between the rotating wheel and the guide rail member, and when the push head is pressed, the rotating wheel rotates a certain angle and is limited to the first position or the second position of the guide rail member through the guide structure, and the first position and the second position correspond to the core return position and the core exit position of the pen core respectively. This arrangement allows the guide rail member, the push head and the rotating wheel to be made into independent modules, which is convenient for automated production and installation.

[0016] Preferably, the upper end of the rotating wheel extends into the guide rail and is connected to the push head, the lower end of the rotating wheel extends out of the guide rail and the display piece is installed outside the end, and a first limiting step is provided in the pen holder and below the guide rail, the top of the display piece abuts against the bottom of the guide rail, and the bottom of the display piece abuts against the first limiting step. This arrangement facilitates the installation of the display piece using the lower end of the rotating wheel, and the axial limiting of the display piece is achieved using the guide rail and the first limiting step.

[0017] Preferably, the invention further comprises a nib cover arranged in the pen holder and sleeved on the lower end of the pen core, the nib cover is linked to the pen core, a second limiting step is arranged on the outer side of the upper end of the nib cover, the elastic reset member is sleeved outside the nib cover, one end of the elastic reset member abuts against the pen holder and the other end abuts against the second limiting step of the nib cover. This arrangement utilizes the nib cover to install the elastic reset member, realizes the functional reuse of the nib cover, and has a more compact structure.

[0018] Preferably, a third limiting step is provided on the inner side of the nib cover, a fourth limiting step is provided on the outer side of the pen core, the fourth limiting step abuts against the third limiting step, and the nib cover is linked to the pen core via the third limiting step and the fourth limiting step. The linkage structure of the nib cover and the pen core is simple and can ensure reliable linkage between the two.

[0019] Preferably, the pen holder includes an upper pen holder and a lower pen holder, the upper pen holder includes an inner shell and an outer shell, the inner shell is detachably connected to the lower pen holder, the outer shell is sleeved outside the inner shell and the inner shell at least partially exposes the outer shell, and the color of the inner shell is different from the color of the outer shell to form a two-color upper pen holder. The upper pen holder and the lower pen holder are provided to facilitate the installation of internal components, and the upper pen holder uses inner shells and outer shells of different colors to form a two-color, which further increases the aesthetics and interest.

[0020] Preferably, the guide rail member is installed in the inner shell and the top of the guide rail member extends out of the inner shell, a fifth limiting step is provided on the outer side of the top of the guide rail member, a sixth limiting step is provided on the outer side of the inner shell, the fifth limiting step is located above the sixth limiting step, the top of the outer shell abuts against the fifth limiting step and the bottom of the outer shell abuts against the sixth limiting step. The fifth limiting step on the guide rail member limits the axial position of the guide rail member; and the sixth limiting step of the inner shell cooperates with the fifth limiting step of the guide rail member to limit the axial position of the outer shell.

[0021] Preferably, the first through hole and the second through hole are arranged on the side of the inner shell, and the display window further comprises a third through hole and a fourth through hole arranged on the side of the outer shell, the third through hole and the fourth through hole respectively correspond to the positions of the first through hole and the second through hole, and the first through hole and the second through hole are further extended with a first positioning column and a second positioning column towards one side of the outer shell, the first positioning column is limited in the third through hole and the second positioning column is limited in the fourth through hole. This arrangement can utilize the through holes to display the pattern on the display piece, and can also utilize the positioning columns at the through holes of the outer shell and the through holes of the inner shell to limit the radial rotation of the outer shell, so that the axial position and radial position of the outer shell are both limited, so that the outer shell can be reliably fixed to the inner shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of existing interesting writing tools;

[0023] Figure 2 It is a structural schematic diagram of the interesting writing tool of the present invention;

[0024] Figure 3 A top view of the interesting writing tool of the present invention;

[0025] Figure 4 for Figure 3 A cross-sectional view along the middle line AA′;

[0026] Figure 5 An exploded schematic diagram of the interesting writing tool of the present invention;

[0027] In the prior art figure: 1a-penholder, 2a-pen core, 3a-ejection mechanism, 4a-display mechanism, 5a-telescopic locking mechanism, 6a-pressing rod, 7a-guide rail, 8a-locking member, 9a-window, 10a-pattern, 11a-spring;

[0028] In the figure of the present invention: 1-pen barrel, 2-pen core, 3-press head, 4-rotating wheel, 5-elastic reset member, 6-display member, 7-pattern, 8-display window, 9-pen tip of pen core, 10-first through hole, 11-second through hole, 12-guide rail member, 13-first limiting step, 14-card slot, 15-card block, 16-pen tip cover, 17-second limiting step, 18-third limiting step, 19-fourth limiting step, 20-upper pen barrel, 21-lower pen barrel, 22-inner shell, 23-outer shell, 24-fifth limiting step, 25-sixth limiting step, 26-third through hole, 27-fourth through hole, 28-first positioning column, 29-second positioning column, 30-first turning tooth, 31-second turning tooth, 32-guide block, 33-guide groove, 34-limiting rib. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example:

[0031] like Figure 2-5As shown, an interesting writing tool comprises a pen barrel 1, a pen core 2, a push head 3 and a rotating wheel 4, the pen core 2 is axially movably installed in the pen barrel 1 through an elastic reset member 5, the push head 3 is axially movably installed at the tail end of the pen barrel 1, and the rotating wheel 4 is rotatably installed in the pen barrel 1 and is located between the push head 3 and the pen core 2; it also includes a display piece 6 clamped between the outer side of the rotating wheel 4 and the inner side of the pen barrel 1 and rotating synchronously with the rotating wheel 4, a plurality of patterns 7 are arranged on the outer circumference of the display piece 6, and a display window 8 is arranged on the side of the pen barrel 1; when the push head 3 is pressed, the rotating wheel 4 rotates a certain angle relative to the pen barrel 1 and undergoes axial displacement, thereby driving the display piece 6 to display different patterns 7 in turn through the display window 8, and driving the pen core 2 to switch between the core return position and the core output position; in this embodiment, the end opposite to the pen head 9 of the pen core 2 is the tail end, and the upper, lower, inner and outer directions are arranged in the shape of a circle. Figure 4 shall prevail.

[0032] The interesting writing tool of this embodiment adds a display piece 6 that rotates synchronously with the rotating wheel 4 to serve as a carrier of the pattern 7, so that when pressed, the rotation of the display piece 6 can be used instead of the rotation of the pen core 2 to display different patterns 7 in turn, achieving the effect of 360-degree rotation and presenting the pattern 7; and the display piece 6 is more compact in structure than the pen core 2, and is clamped between the rotating wheel 4 and the pen body 1, with a smaller movable gap, so that the display piece 6 shakes less when rotating, has better stability and silent effect, and better user experience; in addition, since the pattern 7 is arranged on the display piece 6 instead of the pen core 2, there is no need to use a special pen core 2, the overall versatility is stronger, and the cost of use is lower.

[0033] The display window 8 includes a first through hole 10 and a second through hole 11 which are arranged at intervals on the side of the pen holder 1. The two through holes can make the display area of ​​the pattern 7 larger and the content richer; since the display piece 6 can not only rotate circumferentially but also move axially, the two through holes are arranged in the upper and lower directions to match the movement trajectory of the display piece 6 itself, which is more conducive to the presentation of the pattern 7.

[0034] A slot 14 is provided on one of the outer side of the rotating wheel 4 and a block 15 is provided on the other side of the inner side of the display piece 6. The display piece 6 rotates synchronously with the rotating wheel 4 through the slot 14 and the block 15. This arrangement uses the slot 14 and the block 15 structure with a simple structure to achieve radial positioning of the display piece 6 and the rotating wheel 4, thereby reliably ensuring that the display piece 6 and the rotating wheel 4 rotate synchronously.

[0035] The slot 14 extends axially along the inner side of the display element 6 , and both ends of the slot 14 are set to be open. This arrangement makes it easier to quickly install the display element 6 and the rotating wheel 4 .

[0036] At least two slots 14 are provided and evenly arranged circumferentially on the inner side of the display element 6, and the number and position of the blocks 15 match the slots 14. This arrangement makes the radial position of the display element 6 and the rotating wheel 4 more secure, so that the display element 6 can rotate with the rotating wheel 4 more stably and reliably.

[0037] It also includes a guide rail member 12 fixed at the rear end of the pen body 1, the push head 3 and the rotating wheel 4 are both installed in the guide rail member 12, the push head 3 and the guide rail member 12 are axially slidably matched, and a guide structure is provided between the rotating wheel 4 and the guide rail member 12. When the push head 3 is pressed, the rotating wheel 4 rotates a certain angle and is limited to the first position or the second position of the guide rail member 12 through the guide structure. The first position and the second position correspond to the core return position and the core exit position of the pen core 2 respectively. This arrangement allows the guide rail member 12, the push head 3 and the rotating wheel 4 to be made into independent modules, which is convenient for automated production and installation.

[0038] The upper end of the rotating wheel 4 extends into the guide rail member 12 and is connected to the pressing head 3, the lower end of the rotating wheel 4 extends out of the guide rail member 12 and the display member 6 is installed outside the end, and a first limiting step 13 is also provided in the pen body 1 and below the guide rail member 12, the top of the display member 6 abuts against the bottom of the guide rail member 12, and the bottom of the display member 6 abuts against the first limiting step 13. This arrangement facilitates the installation of the display member 6 using the lower end of the rotating wheel 4, and the axial limiting of the display member 6 is achieved by using the guide rail member 12 and the first limiting step 13.

[0039] It also includes a nib cover 16 arranged in the pen barrel 1 and sleeved on the lower end of the pen core 2. The nib cover 16 is linked to the pen core 2. A second limiting step 17 is provided on the outer side of the upper end of the nib cover 16. The elastic reset member 5 is sleeved outside the nib cover 16. One end of the elastic reset member 5 abuts against the pen barrel 1 and the other end abuts against the second limiting step 17 of the nib cover 16. In this embodiment, the nib 9 of the pen core 2 extends out of the nib cover 16. When the push head 3 is pressed to drive the pen core 2 to be ejected, the nib cover 16 and the nib 9 of the pen core 2 extend out of the pen barrel 1. When the push head 3 is pressed again to drive the pen core 2 to be retracted, the nib cover 16 and the nib 9 of the pen core 2 retract into the pen barrel 1. This arrangement utilizes the nib cover 16 to install the elastic reset member 5, thereby realizing the functional reuse of the nib cover 16 and making the structure more compact. Moreover, when in use, the nib cover 16 and the pen head 9 of the pen core 2 extend out of the pen barrel 1, and the pen core 2 can write stably under the support of the nib cover 16. When stored, the nib cover 16 and the pen core 2 are retracted into the pen barrel 1 together, which can well protect the pen core 2 and avoid damage to the sharp part of the nib cover 16.

[0040] A third limiting step 18 is provided on the inner side of the nib cover 16, and a fourth limiting step 19 is provided on the outer side of the pen core 2. The fourth limiting step 19 abuts against the third limiting step 18, and the nib cover 16 is linked to the pen core 2 through the third limiting step 18 and the fourth limiting step 19. The linkage structure of the nib cover 16 and the pen core 2 is simple, and can ensure reliable linkage between the two.

[0041] The pen holder 1 includes an upper pen holder 20 and a lower pen holder 21, the upper pen holder 20 includes an inner shell 22 and an outer shell 23, the inner shell 22 is detachably connected to the lower pen holder 21, the outer shell 23 is sleeved outside the inner shell 22 and the inner shell 22 at least partially exposes the outer shell 23, and the color of the inner shell 22 is different from the color of the outer shell 23 to form a two-color upper pen holder 20. The upper pen holder 20 and the lower pen holder 21 are provided to facilitate the installation of internal components, and the upper pen holder 20 uses the inner shell 22 and the outer shell 23 of different colors to form a two-color, which further increases the aesthetics and interest.

[0042] The guide rail member 12 is installed in the inner shell 22 and the top of the guide rail member 12 extends out of the inner shell 22. A fifth limiting step 24 is provided on the outer side of the top of the guide rail member 12, and a sixth limiting step 25 is provided on the outer side of the inner shell 22. The fifth limiting step 24 is located above the sixth limiting step 25. The top of the outer shell 23 abuts against the fifth limiting step 24 and the bottom of the outer shell 23 abuts against the sixth limiting step 25. The fifth limiting step 24 on the guide rail member 12 limits the axial position of the guide rail member 12; and the sixth limiting step 25 of the inner shell 22 cooperates with the fifth limiting step 24 of the guide rail member 12 to limit the axial position of the outer shell 23.

[0043] The first through hole 10 and the second through hole 11 are arranged on the side of the inner shell 22, and the display window 8 further comprises a third through hole 26 and a fourth through hole 27 arranged on the side of the outer shell 23, and the third through hole 26 and the fourth through hole 27 correspond to the positions of the first through hole 10 and the second through hole 11 respectively, and the first through hole 10 and the second through hole 11 are further extended with a first positioning column 28 and a second positioning column 29 toward one side of the outer shell 23, and the first positioning column 28 is limited in the third through hole 26 and the second positioning column 29 is limited in the fourth through hole 27. This arrangement can not only utilize the through holes to display the pattern 7 on the display piece 6, but also utilize the positioning columns at the through holes of the outer shell 23 and the through holes of the inner shell 22 to limit the radial rotation of the outer shell 23, so that the axial position and radial position of the outer shell 23 are both limited, so that the outer shell 23 can be reliably fixed to the inner shell 22.

[0044] In this embodiment, the matching structure of the pressing head 3 and the rotating wheel 4 adopts the existing technology. The pressing head 3 is sleeved on the top of the rotating wheel 4, and the bottom of the pressing head 3 is provided with a first rotating tooth 30, and the rotating wheel 4 is provided with a second rotating tooth 31 matching with the first rotating tooth 30. When the pressing head 3 is pressed axially, the oblique tooth surface on the first rotating tooth 30 slides along the oblique tooth surface on the second rotating tooth 31, and the rotating wheel 4 rotates circumferentially under the action of the combined force. Each time the pressing head 3 is pressed, the rotating wheel 4 will be driven to rotate a certain angle; in this embodiment, the guide structure of the rotating wheel 4 and the guide rail member 12 adopts the existing technology, and the guide structure includes It includes a guide block 32 arranged on the outside of the rotating wheel 4, a plurality of guide grooves 33 arranged on the inside of the guide rail member 12, and a limiting rib 34 arranged between the guide grooves 33. When the guide block 32 abuts against the limiting rib 34, the rotating wheel 4 is located in the second position. Pressing the push head 3 can make the guide block 32 slide upward through the guide groove 33 to switch the rotating wheel 4 to the first position. In this embodiment, the upper pen shaft 20 is threadedly connected with the lower pen shaft 21, the push head 3, the rotating wheel 4, the guide rail member 12 and the display member 6 are located in the upper pen shaft 20, and the nib cover 16 and the elastic reset member 5 are located in the lower pen shaft 21.

[0045] The working principle of the interesting writing tool in this embodiment is as follows:

[0046] Assume that the refill 2 is at the ejection position in the initial state, and the rotating wheel 4 is at the second position at this time, the guide block 32 of the rotating wheel 4 abuts against the limiting rib 34 of the guide rail member 12, and the nib cover 16 and the pen tip 9 of the refill 2 extend out of the pen barrel 1; press the push head 3, the rotating wheel 4 rotates a certain angle, and since the display member 6 rotates synchronously with the rotating wheel 4, the display member 6 also rotates a corresponding angle, so that the previous pattern 7 of the display member 6 exits the display window 8 on the side of the pen barrel 1, and the next pattern 7 in the circumferential direction of the display member 6 is displayed. At the same time, the guide block 32 of the rotating wheel 4 slides upward through the guide groove 33 to switch the rotating wheel 4 to the first position, so that the rotating wheel 4 also undergoes axial displacement while rotating, thereby driving the refill 2 from the ejection position When switched to the refill position, since the nib cover 16 is linked to the refill 2, the nib cover 16 and the tip 9 of the refill 2 are retracted into the pen barrel 1 together; and so on, each time the push button 3 is pressed, the display piece 6 will rotate a certain angle with the rotating wheel 4, so that different patterns 7 on the display piece 6 can be displayed in turn through the display window 8 on the side of the pen barrel 1, achieving the effect of 360-degree rotation and presenting the pattern 7. At the same time, the rotating wheel 4 will also undergo axial displacement each time it is pressed, thereby driving the refill 2 to switch between the refill position and the refill output position. When the refill 2 is output, the nib cover 16 and the tip 9 of the refill 2 are extended out of the pen barrel 1 together, and when the refill 2 is refilled, the nib cover 16 and the tip 9 of the refill 2 are retracted into the pen barrel 1 together.

Claims

1. An interesting writing tool, comprising a pen holder (1), a pen core (2), a push head (3) and a rotating wheel (4), wherein the pen core (2) is axially movably mounted in the pen holder (1) via an elastic reset member (5), the push head (3) is axially movably mounted at the rear end of the pen holder (1), and the rotating wheel (4) is rotatably mounted in the pen holder (1) and is located between the push head (3) and the pen core (2); characterized in that: It also includes a display piece (6) sandwiched between the outer side of the rotating wheel (4) and the inner side of the pen holder (1) and rotating synchronously with the rotating wheel (4), a plurality of patterns (7) are arranged on the outer circumference of the display piece (6), and a display window (8) is arranged on the side of the pen holder (1); when the push head (3) is pressed, the rotating wheel (4) rotates a certain angle relative to the pen holder (1) and undergoes axial displacement, thereby driving the display piece (6) to display different patterns (7) in turn through the display window (8), and driving the pen core (2) to switch between the core return position and the core output position.

2. The interesting writing tool according to claim 1, characterized in that: The display window (8) comprises a first through hole (10) and a second through hole (11) which are arranged at an interval up and down on the side surface of the pen holder (1).

3. The interesting writing tool according to claim 1, characterized in that: One of the outer side of the rotating wheel (4) and the inner side of the display piece (6) is provided with a slot (14) and the other is provided with a block (15); the display piece (6) rotates synchronously with the rotating wheel (4) via the slot (14) and the block (15).

4. The interesting writing tool according to claim 3, characterized in that: The card slot (14) extends axially along the inner side of the display piece (6), and both ends of the card slot (14) are arranged to be openings.

5. The interesting writing tool according to claim 3, characterized in that: At least two of the card slots (14) are arranged and are evenly distributed circumferentially on the inner side of the display piece (6); the number and position of the card blocks (15) match the card slots (14).

6. The interesting writing tool according to claim 1, characterized in that: It also includes a guide rail member (12) fixedly mounted at the rear end of the pen shaft (1), the push head (3) and the rotating wheel (4) are both mounted in the guide rail member (12), the push head (3) and the guide rail member (12) are axially slidably matched, a guide structure is provided between the rotating wheel (4) and the guide rail member (12), and when the push head (3) is pressed, the rotating wheel (4) rotates a certain angle and is limited to a first position or a second position of the guide rail member (12) by the guiding structure, and the first position and the second position respectively correspond to the core return position and the core output position of the pen core (2).

7. The interesting writing tool according to claim 6, characterized in that: The upper end of the rotating wheel (4) extends into the guide rail member (12) and is connected to the pressing head (3); the lower end of the rotating wheel (4) extends out of the guide rail member (12) and the display member (6) is installed on the outer side of the end; a first limiting step (13) is also provided in the pen body (1) and below the guide rail member (12); the top of the display member (6) abuts against the bottom of the guide rail member (12), and the bottom of the display member (6) abuts against the first limiting step (13).

8. The interesting writing tool according to claim 1, characterized in that: The invention also comprises a nib cover (16) which is arranged in the pen shaft (1) and sleeved on the lower end of the pen core (2); the nib cover (16) is linked to the pen core (2); a second limiting step (17) is arranged on the outer side of the upper end of the nib cover (16); the elastic reset member (5) is sleeved outside the nib cover (16); one end of the elastic reset member (5) abuts against the pen shaft (1) and the other end abuts against the second limiting step (17) of the nib cover (16).

9. The interesting writing tool according to claim 8, characterized in that: A third limiting step (18) is provided on the inner side of the nib cover (16), and a fourth limiting step (19) is provided on the outer side of the pen core (2). The fourth limiting step (19) abuts against the third limiting step (18). The nib cover (16) is linked to the pen core (2) via the third limiting step (18) and the fourth limiting step (19).

10. The interesting writing tool according to claim 6, characterized in that: The pen holder (1) comprises an upper pen holder (20) and a lower pen holder (21), the upper pen holder (20) comprises an inner shell (22) and an outer shell (23), the inner shell (22) is detachably connected to the lower pen holder (21), the outer shell (23) is sleeved outside the inner shell (22) and the inner shell (22) at least partially exposes the outer shell (23), the color of the inner shell (22) is different from the color of the outer shell (23) to form a two-color upper pen holder (20).

11. The interesting writing tool according to claim 10, characterized in that: The guide rail member (12) is installed in the inner shell (22) and the top of the guide rail member (12) extends out of the inner shell (22); a fifth limiting step (24) is provided on the outer side of the top of the guide rail member (12); a sixth limiting step (25) is provided on the outer side of the inner shell (22); the fifth limiting step (24) is located above the sixth limiting step (25); the top of the outer shell (23) abuts against the fifth limiting step (24) and the bottom of the outer shell (23) abuts against the sixth limiting step (25).

12. The interesting writing tool according to claim 11, characterized in that: The first through hole (10) and the second through hole (11) are arranged on the side of the inner shell (22); the display window (8) further comprises a third through hole (26) and a fourth through hole (27) arranged on the side of the outer shell (23); the third through hole (26) and the fourth through hole (27) respectively correspond to the positions of the first through hole (10) and the second through hole (11); the first through hole (10) and the second through hole (11) are further provided with a first positioning column (28) and a second positioning column (29) extending toward one side of the outer shell (23); the first positioning column (28) is limited in the third through hole (26) and the second positioning column (29) is limited in the fourth through hole (27).

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