Pen capable of randomly switching display patterns

Abstract

The utility model discloses a pen capable of randomly switching and displaying patterns, which comprises a penholder, a refill, a first spring and a telescopic locking mechanism are respectively arranged in the penholder, a button is movably arranged at the rear end of the penholder, the first spring is arranged between the refill and the penholder, and the rear end of the refill is in linkage fit with the front end of the button through the telescopic locking mechanism. The pen holder is further connected with a pattern random switching display device, the pattern random switching display device comprises a shell, a rotating disc and a transmission piece, the shell is connected to the outer side of the pen holder and located on the side portion of the rear end of the pen holder, the rotating disc is rotatably arranged in the shell, a plurality of patterns are arranged at one axial end of the rotating disc, the shell is provided with a window, and the transmission piece is connected with a button. And the front end of the transmission part is in transmission fit with the turntable. The pen capable of randomly switching the display patterns is simple in structure, convenient to assemble and better in holding feeling.

Description

Pens capable of randomly switching displayed patterns Technical Field

[0001] This utility model relates to a pen that can randomly switch the displayed pattern. Background Technology

[0002] Click pens are a common writing tool in daily life. Many click pens on the market today are linked to movable toys to enhance the pen's fun and functionality.

[0003] For example, a Chinese utility model patent discloses a press-type device (CN201511674U), which includes a handheld tube (pen barrel), a press assembly (telescopic locking mechanism), a pen refill, a rotating cylinder, a press element, and other components. The rotating cylinder has patterns distributed circumferentially, and the handheld tube is provided with a display window. By pressing the press element at the rear of the pen, the pen refill can be driven to extend and retract, and the rotating cylinder can also be rotated in conjunction with it, so that random patterns appear on the display window, which is quite interesting.

[0004] However, the rotating cylinder of the pen shown in the above patent and the linkage mechanism between it and the pressing part are all located inside the pen barrel. The internal space of the pen barrel is limited. In order to accommodate these components, the internal structure of the pen becomes complex, which places high demands on the size and fit of the parts. This also makes the assembly of the pen more inconvenient, increases the production cost of the pen, and makes the pen barrel wider, which affects the grip and overall aesthetics of the pen. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a pen that can randomly switch the displayed pattern. It has a simple structure, is easy to assemble, and has a better grip.

[0006] This utility model discloses a pen capable of randomly switching display patterns, comprising a pen barrel containing a pen core, a first spring, and a telescopic locking mechanism. A button is movably mounted at the rear end of the pen barrel. The first spring is positioned between the pen core and the pen barrel, providing a backward elastic force to the pen core. The rear end of the pen core and the front end of the button are linked through the telescopic locking mechanism. Pressing the button can either extend the pen core and maintain it in the extended state or retract the pen core to its original position. The pen barrel is also connected to a pattern random switching display device, which includes a housing, a turntable, and a transmission component. The housing is connected to the outside of the pen barrel and located on the side of the rear end of the pen barrel. The turntable is rotatably mounted inside the housing, with multiple patterns evenly distributed around its axial end along its rotation center. The housing has a window for displaying a single pattern. The transmission component is connected to the button and moves synchronously back and forth with the button. The front end of the transmission component and the turntable form a transmission connection.

[0007] Furthermore, the transmission component is installed inside the housing and located at the other axial end of the turntable. The other axial end of the turntable is coaxially provided with ring teeth, which include multiple circumferentially distributed tooth grooves. The front end of the transmission component includes a tooth-shaped first tooth that engages with the tooth grooves of the ring teeth. This first tooth is located to the side of the ring teeth. When the button is in the initial position, the first tooth of the transmission component engages with the ring teeth. When the button is in the forward pressed position, the first tooth of the transmission component disengages from the ring teeth. As the button moves forward from the initial position to the pressed position, it drives the transmission component forward. When the component moves forward, the first tooth of the transmission component engages with the ring tooth to drive the turntable to rotate. When the button is pressed to the pressed position, the first tooth of the transmission component disengages from the ring tooth, and the turntable continues to rotate under inertia. The number of tooth grooves is the same as the number of patterns on the turntable. When the first tooth is engaged with each tooth groove of the ring tooth, each pattern on the turntable is displayed individually in the viewing window. When the button moves backward to the initial position, the first tooth of the transmission component re-engages with the ring tooth, causing the turntable to stop rotating and simultaneously displaying one of the patterns on the turntable in the viewing window, achieving the effect of randomly displaying patterns.

[0008] Furthermore, the front end of the transmission component includes a toothed second tooth, which is located in front of the ring tooth and faces backward. When the button is in the initial position, the first tooth and the second tooth respectively mesh with different grooves of the ring tooth. Through the cooperation of the first tooth, the second tooth and the ring tooth, the turntable can maintain a stable rotation position, and it is not easy to wobble in the circumferential direction, which improves the display effect of the pattern and also reduces the requirements for processing accuracy.

[0009] Furthermore, the teeth of the ring tooth are chamfered on one side corresponding to its rotation direction. The chamfer reduces interference with the first tooth, allowing the first tooth to better disengage from the ring tooth when it moves forward, thus reducing the requirements for machining accuracy.

[0010] Furthermore, the outer casing includes a transmission chamber for accommodating the transmission component and a turntable chamber for accommodating the turntable. The ring teeth of the turntable are located in the transmission chamber. The transmission component includes a support arm extending forward, with the ring teeth located on one side of the support arm. A first limiting wall is provided in the transmission chamber to cooperate with and limit the other side of the transmission component. The first tooth is located on one side of the support arm, and the front end of the support arm extends to one side and forms a bent portion. The second tooth is located on the bent portion. The first limiting wall can prevent the transmission component from bending or shaking in the other direction, ensuring the cooperation effect of the first and second teeth and the ring teeth. A second limiting wall is provided in the transmission chamber. The second limiting wall is located below the ring teeth and simultaneously on one side of the support arm. The second limiting wall cooperates with the bent portion to limit the movement. The second limiting wall includes an inclined or arc-shaped guide surface, which can prevent the transmission component from bending or shaking in one direction and prevent the turntable from being unable to rotate freely due to interference between the transmission component and the ring teeth.

[0011] Furthermore, the pen barrel has a notch at its rear end, and a locking block is provided at the notch. The inner side of the outer shell is provided with a locking groove that engages with the locking block for positioning. The transmission component and the button are arranged laterally at intervals. The rear ends of the transmission component and the rear ends of the button are connected laterally together to facilitate the assembly and connection of the pen barrel and the outer shell. Preferably, the transmission component and the button are integrally formed.

[0012] Furthermore, a convex wall connects the transmission component and the button. Preferably, the convex wall is integrally formed with the transmission component and the button. The rear end of the pen barrel and the rear end of the outer shell are respectively provided with sliding grooves that cooperate with the convex wall. The rear end of the pen barrel and the rear end of the outer shell are both provided with insertion ports connected to the sliding grooves. The convex wall can improve the connection effect between the transmission component and the button. The sliding cooperation between the convex wall and the sliding groove can guide the back and forth movement of the button and the transmission component.

[0013] Furthermore, the telescopic locking mechanism includes a front tooth component, a rear tooth component, and a guide rail disposed on the inner wall of the pen barrel. The front tooth component, the rear tooth component, and the guide rail form a connection that allows them to move back and forth relative to the pen barrel but prevents them from rotating relative to the pen barrel. The rear end of the pen refill abuts against the front tooth component. The rear end of the rear tooth component includes a connecting post that is inserted and fixed to the front end of the button. The inner side of the pen barrel includes an annular flange. The connecting post is movably inserted into the inner hole of the annular flange. A second spring is sleeved on the connecting post. The second spring abuts against the annular flange and the front end of the button respectively. When the button is pressed alternately, it can drive the pen refill to move forward and extend and remain in the extended state, and drive the pen refill to move backward and retract into the pen barrel. The setting of the second spring allows the button to return to the initial position when the pen refill is extended.

[0014] The beneficial effects of this utility model are: the pattern random switching display device of this utility model pen is set on the outside of the pen barrel, and the rotation of the turntable and the random switching of the pattern are realized by the button used to drive the extension and retraction of the pen tip. The structure is simple, the assembly is convenient, and it will not affect the width of the pen barrel, thus ensuring a good grip. Attached Figure Description

[0015] Figure 1 is a structural diagram of an embodiment of the present utility model;

[0016] Figure 2 is an exploded view of the structure of an embodiment of the present invention.

[0017] Figure 3 is an exploded view of the structure of an embodiment of the present invention.

[0018] Figure 4 is a structural diagram of the card slot according to an embodiment of the present invention;

[0019] Figure 5 is a partial cross-sectional view of an embodiment of the present utility model;

[0020] Figure 6 is an exploded view of the front tooth component and the rear tooth component of this utility model embodiment;

[0021] Figure 7 is a structural diagram of the transmission component according to an embodiment of the present utility model;

[0022] Figure 8 is a schematic diagram of the engagement between the ring tooth and the transmission component when the button is in the initial position according to an embodiment of the present invention;

[0023] Figure 9 is a schematic diagram of the engagement between the ring teeth and the transmission component when the button is in the pressed position according to an embodiment of the present invention. Detailed Implementation

[0024] The structure of the pen capable of randomly switching display patterns according to an embodiment of this utility model is shown in Figures 1-9. It includes a pen barrel 1, within which a pen core 2, a first spring, and a telescopic locking mechanism are respectively disposed. A button 3 is movably disposed at the rear end of the pen barrel 1. The first spring is disposed between the front end of the pen core 2 and the pen barrel 1, providing a backward elastic force to the pen core 2. The rear end of the pen core 2 and the front end of the button 3 are linked and cooperate through the telescopic locking mechanism. Pressing the button 3 can drive the pen core 2 to extend and remain in the extended state, or drive the pen core 2 to retract and reset. The pen barrel 1 is also connected to a pattern random switching display device 4. The pattern random switching display device 4 includes a housing 41, a turntable 42, and a transmission component 43. The housing 41 is connected to the outside of the pen barrel 1 and located at the side of the rear end of the pen barrel 1. The turntable 42 is rotatably disposed inside the housing 41. Multiple patterns are evenly distributed around the axial end of the turntable 42 along its rotation center. The patterns on the turntable 42 can be cartoon patterns, numbers, or letters. The housing 41 is provided with a window 411 for displaying a single pattern. The transmission component 43 is connected to the button 3 and moves back and forth synchronously with the button 3. The front end of the transmission component 43 and the turntable 42 form a transmission cooperation.

[0025] The transmission component 43 is inserted inside the housing 41 and located at the other axial end of the turntable 42. A ring tooth 421 is coaxially arranged at the other axial end of the turntable 42. The ring tooth 421 includes multiple circumferentially distributed tooth grooves. The front end of the transmission component 43 includes a tooth-shaped first tooth 431, which meshes with the tooth groove of the ring tooth 421. The first tooth 431 is located to the side of the ring tooth 421. When the button 3 is in the initial position, the first tooth 431 of the transmission component 43 meshes with the ring tooth 421 (as shown in Figure 8). When the button 3 is in the forward pressed position, the first tooth 431 of the transmission component 43 disengages from the ring tooth 421 (as shown in Figure 9). As the button 3 moves forward from the initial position to the pressed position, it drives the transmission component 43 forward. When the transmission component 43 moves forward, it drives the turntable 42 to rotate through the engagement of the first tooth 431 and the ring tooth 421. When the button 3 is pressed to the pressed position, the first tooth 431 of the transmission component 43 disengages from the ring tooth 421, and the turntable 42 continues to rotate under inertia. The number of the tooth grooves (or teeth) is the same as the number of patterns on the turntable 42. When the first tooth 431 is engaged with each tooth groove of the ring tooth 421, each pattern on the turntable 42 is displayed individually in the viewing window 411. When the button 3 moves backward to the initial position, the first tooth 431 of the transmission component 43 re-engages with the ring tooth 421, causing the turntable 42 to stop rotating, and at the same time, one of the patterns on the turntable 42 is displayed in the viewing window 411, achieving the effect of randomly displaying patterns.

[0026] The front end of the transmission component 43 includes a toothed second tooth 432, which is located in front of the ring tooth 421 and faces backward. When the button 3 is in the initial position, the first tooth 431 and the second tooth 432 respectively mesh with different grooves of the ring tooth 421. Through the cooperation of the first tooth 431 and the second tooth 432 with the ring tooth 421, the turntable 42 can maintain a stable rotation position, which is not easy to wobble in the circumferential direction, improves the display effect of the pattern, and also reduces the requirements for processing accuracy.

[0027] The ring tooth 421 has a chamfer 421a on one side corresponding to its rotation direction. The chamfer 421a reduces interference with the first tooth 431, allowing the first tooth 431 to better disengage from the ring tooth 421 when it moves forward, thus reducing the requirements for machining accuracy.

[0028] The outer casing 41 includes a transmission chamber 412 for accommodating the transmission component 43 and a turntable chamber 413 for accommodating the turntable 42. The ring teeth 421 of the turntable 42 are located within the transmission chamber 412. The transmission component 43 includes a forward-extending support arm 430. The ring teeth 421 are located on one side of the support arm 430 (as shown in Figures 8 and 9). A first limiting wall 412a is provided in the transmission chamber 412 to cooperate with and limit the other side of the transmission component 43. The first teeth 431 are provided on one side of the support arm 430. The front end of the support arm 430 extends to one side and forms a bent portion 430a. The second teeth 432 are provided on the bent portion 430a. The first limiting wall 412a can prevent the transmission component 43 from bending or wobbling in the other direction. To ensure the proper engagement of the first and second teeth 432 and the ring tooth 421, a second limiting wall 412b is provided in the transmission chamber 412. The second limiting wall 412b is located below the ring tooth 421 and simultaneously on one side of the support arm 430. The second limiting wall 412b cooperates with the bent part 430a for limiting. The second limiting wall 412b includes an inclined or arc-shaped guide surface 412c (located on the rear side of the second limiting wall 412b), which can prevent the transmission component 43 from bending or shaking in one direction, and prevent the turntable 42 from being unable to rotate freely due to interference between the transmission component 43 and the ring tooth 421. The guide surface 412c can prevent the transmission component 43 from being blocked by the second limiting wall 412b when it moves forward (when the machining accuracy of the transmission component 43 is not good).

[0029] A shaft is provided at the center of the transmission chamber 412 and the turntable chamber 413. The turntable 42 has a shaft hole at its center that is rotatably fitted with the shaft. The shaft hole is located at the center of the ring tooth 421. In order to improve the rotation effect of the turntable 42, a bearing can also be provided between the shaft hole and the shaft.

[0030] The pen barrel 1 has a notch 10 on its rear side, and a locking block 11 is provided at the notch 10. The inner side of the outer shell 41 is provided with a locking groove 414 that forms a locking and positioning fit with the locking block 11. The assembly between the outer shell 41 and the pen barrel 1 is achieved by plugging and locking. The notch 10 makes the connection structure more compact. The transmission component 43 and the button 3 are arranged laterally at intervals. The rear end of the transmission component 43 and the rear end of the button 3 are connected laterally together to facilitate the assembly and connection of the pen barrel 1 and the outer shell 41. The transmission component 43 and the button 3 are integrally injection molded.

[0031] A convex wall 31 connects the transmission component 43 and the button 3. The convex wall 31, transmission component 43, and button 3 are integrally injection molded. The rear end of the pen barrel 1 and the rear end of the outer shell 41 are respectively provided with sliding grooves that cooperate with the convex wall 31. The rear end of the pen barrel 1 and the rear end of the outer shell 41 are both provided with insertion ports connected to the sliding grooves. The convex wall 31 can improve the connection effect between the transmission component 43 and the button 3. The sliding cooperation between the convex wall 31 and the sliding groove can guide the forward and backward movement of the button 3 and the transmission component 43 and limit the rotation of the components.

[0032] As shown in Figures 5 and 6, the telescopic locking mechanism includes a front tooth component 51, a rear tooth component 52, and multiple guide rails evenly distributed circumferentially on the inner wall of the pen barrel 1. The front tooth component 51, the rear tooth component 52, and the guide rails form a connection that allows them to move back and forth relative to the pen barrel 1 but prevents them from rotating relative to the pen barrel 1. The rear end of the pen core 2 abuts against the front tooth component 51. The rear end of the rear tooth component 52 includes a connecting post 521 that is inserted and fixed to the front end of the button 3. The inner side of the pen barrel 1 includes an annular flange 12. The connecting post 521 is movably inserted into the inner hole of the annular flange 12. A second spring 6 is sleeved on the connecting post 521. The second spring 6 abuts against the annular flange 12 and the front end of the button 3 respectively. When the button 3 is pressed alternately, it can drive the pen core 2 to move forward and extend and remain in the extended state, and drive the pen core 2 to move backward and retract into the pen barrel 1. The setting of the second spring 6 allows the button 3 to return to the initial position when the core is extended.

[0033] The telescopic locking mechanism is a well-known technology. Its specific working principle is as follows: the front tooth component 51 and the rear tooth component 52 cooperate with the guide rail inside the pen barrel 1 for guided movement (via guide grooves on the outer peripheral walls of the front tooth component 51 and the rear tooth component 52). When button 3 is pressed, the rear tooth component 52 pushes the front tooth component 51 forward. When the front tooth component 51 disengages from the guide rail, the helical teeth between the front tooth component 51 and the rear tooth component 52 drive the front tooth component 51 to rotate a certain angle. When button 3 is released... When the front tooth component 51 is pressed, the guide groove and guide rail of the front tooth component 51 are misaligned, and the front end of the front tooth component 51 and the guide rail are mutually limited, keeping the front tooth component 51 in a forward position, corresponding to the position where the pen refill is extended. When the button 3 is pressed again, the rear tooth component 52 pushes the front tooth component 51 forward and disengages from the guide rail. The helical teeth push the front tooth component 51 to rotate again by a certain angle, so that the guide groove of the front tooth component 51 and the guide rail are aligned. The front tooth component 51 then retracts to the rear position under the push of the first spring, which corresponds to the retracted state. In the extended locking mechanism using this principle, the rear tooth component 52 is not pushed by the front tooth component 51 in the extended state, and the rear tooth component 52 can move freely back and forth in the pen barrel. This also allows the button 3 to move freely back and forth. The second spring 6 pushes the button 3 to move backward and reset, so that the button 3 can also move backward and reset to the initial position in the retracted state, avoiding the problem of the transmission component 43 and the ring tooth 421 not being able to mesh or meshing unreliably.

[0034] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A pen capable of randomly switching displayed patterns, comprising a pen barrel, wherein a pen core, a first spring, and a telescopic locking mechanism are respectively disposed within the pen barrel, a button is movably disposed at the rear end of the pen barrel, the first spring is disposed between the pen core and the pen barrel and provides a backward elastic force to the pen core, the rear end of the pen core and the front end of the button are linked and cooperated by the telescopic locking mechanism, and the pen barrel is further connected to a pattern random switching display device, characterized in that: The random pattern switching display device includes a housing, a turntable, and a transmission component. The housing is connected to the outside of the pen barrel and located at the side of the rear end of the pen barrel. The turntable is rotatably disposed inside the housing. Multiple patterns are evenly distributed around the axial end of the turntable along its rotation center. The housing is provided with a window for displaying a single pattern. The transmission component is connected to a button and moves back and forth synchronously with the button. The front end of the transmission component and the turntable form a transmission cooperation.

2. The display pattern randomly switchable pen according to claim 1, wherein: The transmission component is located at the other end of the turntable along its axial direction. The other end of the turntable is coaxially provided with a ring tooth, which includes multiple grooves evenly distributed along the circumference. The front end of the transmission component includes a tooth-shaped first tooth, which engages with the grooves of the ring tooth. The first tooth is located to the side of the ring tooth. When the button is in the initial position, the first tooth of the transmission component engages with the ring tooth. When the button is in the pressing position, the first tooth of the transmission component disengages from the ring tooth. During the process of the button moving forward from the initial position to the pressing position, the transmission component drives the turntable to rotate through the engagement of the first tooth and the ring tooth. The number of grooves is the same as the number of patterns on the turntable. When the first tooth engages with each groove of the ring tooth, each pattern on the turntable is displayed individually in the viewing window.

3. The display pattern randomly switchable pen according to claim 2, wherein: The front end of the transmission component includes a toothed second tooth, which is located in front of the ring tooth and faces backward. When the button is in the initial position, the first tooth and the second tooth are respectively engaged in different grooves of the ring tooth.

4. The display pattern randomly switchable pen according to claim 2, wherein: The teeth of the ring tooth have a chamfer on one side corresponding to its rotation direction.

5. The display pattern randomly switchable pen according to claim 3, wherein: The outer casing includes a transmission chamber for accommodating a transmission component and a turntable chamber for accommodating a turntable. The ring teeth of the turntable are located in the transmission chamber. The transmission component includes a support arm extending forward, with the ring teeth located on one side of the support arm. A first limiting wall is provided in the transmission chamber to cooperate with and limit the other side of the transmission component. The first teeth are located on one side of the support arm, and the front end of the support arm extends to one side and forms a bent portion. The second teeth are located on the bent portion. A second limiting wall is provided in the transmission chamber. The second limiting wall is located below the ring teeth and simultaneously on one side of the support arm. The second limiting wall cooperates with the bent portion to limit the movement. The second limiting wall includes an inclined or arc-shaped guide surface.

6. The display pattern randomly switchable pen according to claim 1, wherein: The pen barrel has a notch at the rear end, and a locking block is provided at the notch. The inner side of the outer shell is provided with a locking groove that engages with the locking block. The transmission component and the button are arranged laterally at intervals, and the rear ends of the transmission component and the rear ends of the button are connected laterally together.

7. The display pattern randomly switchable pen according to claim 6, wherein: A convex wall connects the transmission component and the button. The rear end of the pen barrel and the rear end of the outer shell are respectively provided with sliding grooves that cooperate with the convex wall. The rear end of the pen barrel and the rear end of the outer shell are both provided with insertion ports that are connected to the sliding grooves.

8. The pen tool capable of randomly switching displayed patterns according to claim 1, characterized in that: The telescopic locking mechanism includes a front tooth component, a rear tooth component, and a guide rail disposed on the inner wall of the pen barrel. The front tooth component, the rear tooth component, and the guide rail form a connection that allows them to move back and forth relative to the pen barrel but prevents them from rotating relative to the pen barrel. The rear end of the pen refill abuts against the front tooth component. The rear end of the rear tooth component includes a connecting post that is inserted and fixed to the front end of the button. The inner side of the pen barrel includes an annular flange. The connecting post is movably inserted into the inner hole of the annular flange. A second spring is sleeved on the connecting post. The second spring abuts against the annular flange and the front end of the button, respectively.

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