Pen capable of automatically folding and unfolding pen clip

Abstract

The utility model discloses a pen capable of automatically retracting and releasing a pen clip, which comprises a pen holder, a pen core, a telescopic locking mechanism, a button, a spring and the pen clip, the pen core and the telescopic locking mechanism are arranged in the pen holder, the button is movably arranged at the rear end of the pen holder, the telescopic locking mechanism is linked with the pen core and the button, the spring is arranged between the front end of the pen core and the pen holder, and the pen clip is arranged in the pen holder. The telescopic locking mechanism comprises a front tooth part, a rear tooth part and a guide rail, the pen holder is provided with an opening, the pen clip is laterally and movably arranged at the opening, a transmission rod is connected between the telescopic locking mechanism and the button, the pen clip comprises a connecting end, the connecting end comprises a sleeving hole, the transmission rod is movably arranged in the connecting hole, and the connecting hole is provided with a convex block. Guide slopes are arranged on the two sides of the transmission rod, the front end of the transmission rod is in fixed fit with the rear tooth component, and the front end of the transmission rod is in limiting fit with the front tooth component. The pen capable of automatically folding and unfolding the pen clip is fewer in parts, simpler in structure and capable of automatically folding and unfolding the pen clip.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pen capable of automatically retracting and extending a pen clip. BACKGROUND

[0002] The existing click-type pen with a pen clip usually comprises a pen barrel, a pen core, an extension locking mechanism, a button, a spring and a pen clip. The pen core and the extension locking mechanism are arranged in the pen barrel. The extension locking mechanism is linked with the pen core and the button. The spring is arranged between the front end of the pen core and the pen barrel. The extension locking mechanism usually comprises a front tooth component, a rear tooth component and a guide rail arranged on the inner wall of the pen barrel. The guide rail, the front tooth component and the rear tooth component form a locking fit. By pressing the button alternately, the pen core can be driven to extend from the front end of the pen barrel and remain in the extended state, or be driven to retract into the pen barrel. The pen clip is usually integrally formed on the outer side of the pen barrel and is not movable.

[0003] Later, a click-type pen with a retractable pen clip appeared on the market. The side of the pen barrel is provided with a storage groove. The pen clip is connected to the pen barrel and can move laterally. The pen clip is linked with the extension locking mechanism of the pen. The pen clip can be retracted into the storage groove on the side of the pen barrel or extended from the storage groove along with the extension and retraction of the pen core. Thus, the pen clip is hidden during writing and does not affect the hand feeling. According to the aesthetic appearance, the pen clip is extended when the pen is not used, which facilitates the clamping and fixing of the pen.

[0004] For example, a click-type pen with a retractable pen clip is disclosed in Chinese invention patent application CN116852894A. The extension and retraction of the pen core are linked with the extension and retraction of the pen clip. In this patent, the sliding component moves forward when the pen core is extended. The inclined surface of the sliding component drives the pen clip to move in the retraction direction. The sliding component moves backward when the pen core is retracted. The elastic member drives the pen clip to extend.

[0005] In the above-mentioned patent, the extension of the pen clip also needs to rely on the elastic member. The structure is relatively complex and has many components. UTILITY MODEL CONTENTS

[0006] In order to overcome the defects of the above-mentioned prior art, the utility model provides a pen capable of automatically retracting and extending a pen clip with fewer components and a simpler structure.

[0007] The utility model discloses a pen of automatic pen clip retraction, including pen holder, pen core, telescopic locking mechanism, button, spring, pen clip, pen core and telescopic locking mechanism set up in the pen holder, button swing setting is in the rear end of pen holder, and the telescopic locking mechanism and pen core, button are linked together, and the spring sets up between pen core front end and pen holder, and the telescopic locking mechanism includes the front tooth part, rear tooth part and the guide rail of setting in the pen holder inner wall, and the rear end of pen core and front tooth part abutment cooperation, the lateral of pen holder is provided with the opening of communicating with its inner chamber, the pen clip is swing setting in the opening, the transmission rod is connected between the telescopic locking mechanism and button, and when operating button is pressed, can push rear tooth part forward movement through transmission rod, and rear tooth part pushes forward movement when forward movement, and front tooth part pushes forward movement, and when forward movement, and the pen core is pushed forward and stretches out, and when the circumferential limit of front tooth part and rear tooth part tooth is separated (that is from the front end of guide rail separates) when, drives the rotation of front tooth part through the cooperation of front tooth part and rear tooth part tooth, and when the front end of guide rail and front tooth part contact, when the spring drives rear movement and also can rotate when front tooth part, when the guide rail and the sliding groove of front tooth part are misaligned, can cooperate with the front end of guide rail and limit to keep the pen core in the state of out of core, and when the button is pressed again, then can drive the rotation of front tooth part, make the guide rail and the sliding groove of front tooth part be in the state of alignment, and the limit of front tooth part and the front end of guide rail is released, and then by the spring drive pen core is retracted in the pen holder, the pen clip includes the connecting end of along the opening and is inserted in the pen holder inner chamber, the connecting end includes the sleeve hole, the transmission rod swing setting is in the sleeve hole, the opposite setting two sides inner wall of sleeve hole is provided with the lug, the both sides of transmission rod are provided with the guide inclined plane of sliding contact cooperation with two lugs respectively, and when forward movement, drives pen clip to move to the direction of close to pen holder through a set of matched lug and guide inclined plane, and when backward movement, drives pen clip to move to the direction of away from pen holder through another set of matched lug and guide inclined plane, and the front end of transmission rod and rear tooth part constitute fixed cooperation, and the front end of transmission rod and front tooth part constitute make front tooth part can rotate relative transmission rod and make front tooth part can move forward relative transmission rod within the distance of limit connection cooperation.

[0008] When pressing the button alternately, can realize respectively: push the pen core and keep in the state of out of core, and front tooth part and transmission rod are all in the position of close to, and the pen clip keeps in the position of close to pen holder, realize the folding of pen clip, or drive the pen core and keep in the state of in, and at the same time, since transmission rod is in the position of away from, also can keep the pen clip in the position of away from pen holder, realize the unfolding of pen clip.

[0009] Further, the front tooth component and the rear tooth component are provided with connecting holes at the center, the front end of the transmission rod and the connecting hole of the rear tooth component constitute an insertion positioning fit, which enables the transmission rod and the rear tooth component to move forward and backward synchronously, the front end of the transmission rod is also provided with a rod-shaped connecting part, the connecting part and the connecting hole of the front tooth component constitute a movable insertion fit which can rotate relative to each other in the circumferential direction and can move relative to each other in the axial direction, the front end of the connecting part is provided with a limiting block, and the limiting block and the front tooth component constitute a limiting fit, when the front tooth component is limited by the front end of the guide rail and is at a forward position, the transmission rod can also be kept at the forward position by the limiting block, so that the pen clip is prevented from shaking and opening automatically.

[0010] Further, the front end of the connecting part is provided with two elastic arms which are uniformly distributed in the circumferential direction at the center, and the adjacent elastic arms have a gap which can be deformed towards the center of the connecting part, the outer side of each elastic arm is provided with the limiting block, and the elastic arms are used to enable the limiting block to move towards the center of the connecting part, so as to facilitate the insertion and installation of the connecting part along the connecting hole of the front tooth component and the rear tooth component.

[0011] Further, the connecting hole of the front tooth component is provided with a guide conical surface, and / or the front end of the limiting block is provided with a chamfer, and in the insertion process, the guide conical surface / chamfer is used for contact fit, so as to facilitate the insertion and installation of the connecting part along the connecting hole of the front tooth component / rear tooth component.

[0012] Further, the front tooth component is provided with a counterbore for accommodating the connecting part, the counterbore is located at the front end of the connecting hole and is connected with the connecting hole, a first annular fit surface is formed at the connection between the counterbore and the connecting hole, the limiting block and the first annular fit surface are limited in position, the counterbore is provided to reduce the length of the connecting part, so that the overall structure is more compact, and the connecting part can only move within the range of the counterbore, so as to avoid the connecting part from extending to the outside of the front tooth component.

[0013] Further, the front end of the front tooth component is provided with a shallow pit, the shallow pit is located at the front end of the counterbore and is connected with the counterbore, a second annular fit surface is formed at the connection between the counterbore and the shallow pit, and the rear end of the pen core is in abutting fit with the second annular fit surface.

[0014] Further, the rear end of the transmission rod is provided with a connecting column, the front end of the connecting column is provided with a limiting plate, the rear end of the inner hole of the pen barrel is provided with an annular inner edge which is in limiting fit with the front side of the limiting plate, so as to avoid excessive forward movement of the transmission rod, and the button sleeve is fixed at the rear end of the connecting column.

[0015] The utility model discloses a simple structure and few parts, and can automatically retract and extend the pen clip, drive the pen core to move, and link the pen clip to retract and extend. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of the embodiment of the present application;

[0017] Figure 2 A sectional view of the embodiment of the present application when the pen clip is extended;

[0018] Figure 3 A sectional view of the embodiment of the present application when the pen clip is retracted;

[0019] Figure 4 A structural view of the embodiment of the present application of the pen clip;

[0020] Figure 5 A structural view of the embodiment of the present application of the transmission rod;

[0021] Figure 6 A cooperation schematic view of the embodiment of the present application of the telescopic locking mechanism, the pen clip and the transmission rod;

[0022] Figure 7 A connection schematic view of the embodiment of the present application of the transmission rod and the front tooth component and the rear tooth component;

[0023] Figure 8 A structural view of the embodiment of the present application of the front tooth component. DETAILED DESCRIPTION

[0024] The structure of the pen capable of automatically retracting and extending the pen clip of the embodiment of the present application is as shown in Figures 1-8The pen shown, including the pen barrel 1, the pen core 2, the telescopic locking mechanism, the button 3, the spring (not shown), the pen clip 4, the pen core 2 and the telescopic locking mechanism are arranged in the pen barrel 1, the button 3 is movably arranged at the rear end of the pen barrel 1, the telescopic locking mechanism and the pen core 2, the button 3 are linked, the spring is arranged between the front end of the pen core 2 and the pen barrel 1, the spring exerts an elastic force on the pen core 2 towards the rear end of the pen, the telescopic locking mechanism includes the front tooth component 5, the rear tooth component 6 and the guide rail 7 arranged on the inner wall of the pen barrel 1, the guide rail 7 is a plurality of, which are arranged along the inner circumferential wall of the pen barrel 1, the outer circumferential surface of the front tooth component 5 and the rear tooth component 6 is provided with a sliding groove (51, 61) which cooperates with the guide rail 7 to slide, through the guide of the guide rail 7 and the sliding groove (51, 61), the rotation of the front tooth component 5 and the rear tooth component 6 relative to the pen barrel 1 can be prohibited, the rear end of the front tooth component 5 and the pen core 2 is in abutting cooperation, which can also be fixed, the side of the pen barrel 1 is provided with an opening 11 which is in communication with the inner cavity thereof, the pen clip 4 is laterally movably arranged at the opening 11, the telescopic locking mechanism and the button 3 are connected with the transmission rod 8, when the button 3 is pressed, the rear tooth component 6 is pushed forward by the transmission rod 8, the rear tooth component 6 pushes the front tooth component 5 forward when moving forward, the front tooth component 5 pushes the pen core 2 to extend forward when moving forward, the front tooth component 5 rotates when it is out of the circumferential limitation of the guide rail 7 (i.e. when it is out of the front end of the guide rail 7) through the cooperation of the front tooth component 5 and the rear tooth component 6, the front tooth component 5 rotates when it is in contact with the front end of the guide rail 7 after the button 3 is released and driven by the spring to move backward, when the sliding groove 51 of the guide rail 7 and the front tooth component 5 is out of position, it can be limited by the front end of the guide rail 7 to keep the pen core 2 in the state of extending, through pressing and releasing the button 3 again, the front tooth component 5 can be driven to rotate, the sliding groove 51 of the guide rail 7 and the front tooth component 5 is in the state of alignment, the limitation of the front end of the guide rail 7 to the front tooth component 5 is released, the front tooth component 5 can move backward, and the pen core 2 is driven by the spring to retract into the pen barrel 1, the pen clip 4 includes the connecting end which is inserted into the inner cavity of the pen barrel 1 along the opening 11, the connecting end includes the sleeve hole 41, the transmission rod 8 is movably arranged in the sleeve hole 41, the opposite two inner walls of the sleeve hole 41 are provided with the protrusions 42, the two sides of the transmission rod 8 are provided with the guide inclined surfaces 81 which are in sliding contact with the two protrusions 42 respectively, the transmission rod 8 drives the pen clip 4 to move towards the pen barrel 1 when moving forward through a set of matched protrusions 42 and guide inclined surfaces 81, the transmission rod 8 drives the pen clip 4 to move away from the pen barrel 1 when moving backward through another set of matched protrusions 42 and guide inclined surfaces 81, the front end of the transmission rod 8 and the rear tooth component 6 constitute fixed cooperation, the front end of the transmission rod 8 and the front tooth component 5 constitute connection cooperation which enables the front tooth component 5 to rotate relative to the transmission rod 8 and enables the front tooth component 5 to move forward relative to the transmission rod 8 within a limited distance.

[0025] When the button 3 is pressed alternately, the following functions can be realized respectively: pushing the refill 2 to extend and keep in the state of the refill, the front tooth component 5 and the transmission rod 8 are in the position of the front, the pen clip 4 keeps in the position close to the pen barrel 1, the folding of the pen clip 4 is realized, or driving the refill 2 to retract and keep in the state of the retracted refill, and at the same time, the pen clip 4 can be kept in the position away from the pen barrel 1 due to the transmission rod 8 in the position of the back, and the unfolding of the pen clip 4 is realized.

[0026] As shown in Figure 2 , 3 , 7, the connection holes (52, 62) are arranged at the centers of the front tooth component 5 and the rear tooth component 6, the front end of the transmission rod 8 and the connection hole 52 of the rear tooth component 6 constitute the plug-in positioning cooperation, specifically, the front end of the transmission rod 8 is provided with an annular clamping groove, the connection hole 52 of the rear tooth component 6 is provided with an annular protruding rib for clamping and positioning cooperation with the annular clamping groove, which makes the transmission rod 8 and the rear tooth component 6 move forward and backward synchronously, the front end of the transmission rod 8 also has a rod-shaped connecting part 82, the connecting part 82 and the connection hole 52 of the front tooth component 5 constitute the movable plug-in cooperation which can rotate relative to each other in the circumferential direction and can move relative to each other in the axial direction, the front end of the connecting part 82 is provided with a limiting block 83, the limiting block 83 and the front tooth component 5 constitute the limiting cooperation, when the front tooth component 5 is limited by the front end of the guide rail 7 to be in the position of the front, the transmission rod 8 can also be kept in the position of the front by the limiting block 83, preventing the pen clip 4 from opening by shaking by itself.

[0027] As shown in Figure 5 , the front end of the connecting part 82 is uniformly provided with two elastic arms 821 along the center in the circumferential direction, and the adjacent elastic arms 821 have a gap for deforming in the direction of the center of the connecting part 82, the outer side of each elastic arm 821 is provided with the limiting block 83, the elastic arms 821 are used to make the limiting block 83 move in the direction of the center of the connecting part 82, facilitating the insertion and installation of the connecting part along the connection holes of the front tooth component 5 and the rear tooth component 6.

[0028] The connection hole 52 of the front tooth component 5 is provided with a guide conical surface, and the front end of the limiting block 83 is provided with a chamfer, in the process of plugging, the connection part 82 can be contracted in the process of inserting into the connection hole 52 by the contact cooperation of the guide conical surface and the chamfer, facilitating the insertion and installation of the connecting part 82 along the connection holes of the front tooth component 5 and the rear tooth component 6.

[0029] The front tooth component 5 is provided with an enlarged hole 53 for accommodating the connecting part 82. The enlarged hole 53 is located at the front end of the connecting hole 52 and is connected to the connecting hole 52. A first annular mating surface 54 is formed at the connection between the enlarged hole 53 and the connecting hole 52. The limiting block 83 and the first annular mating surface 54 cooperate to limit the movement. The enlarged hole 53 helps to reduce the length of the connecting part 82, making the overall structure more compact. It also ensures that the connecting part 82 can only move within the range of the enlarged hole 53, preventing it from extending forward to the outside of the front tooth component 5.

[0030] The front tooth component 5 has a shallow pit 55 at its front end. The shallow pit 55 is located at the front end of the enlarged hole 53 and is connected to the enlarged hole 53. A second annular mating surface 56 is formed at the connection between the enlarged hole 53 and the shallow pit 55. The rear end of the pen refill 2 abuts against the second annular mating surface 56.

[0031] The transmission rod 8 has a connecting post 84 at its rear end and a limiting plate 85 at its front end. The pen barrel 1 has an annular inner edge 12 at its rear end that cooperates with the front side of the limiting plate 85 to limit movement, which can prevent the transmission rod 8 from moving too far forward. The button 3 is sleeved and fixed to the rear end of the connecting post 84.

[0032] In addition to the above structure, the pen barrel 1 has a cutout on its side, which makes the overall structure of the pen more compact, beautiful and integrated when the pen clip 4 is closed. The pen clip 4 has a clamping block on the inner front side of the clamping body, and the pen barrel 1 has a recessed hole at the corresponding clamping block position on its side, which can improve the clamping effect.

[0033] 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 automatically retracting and extending its clip, comprising a pen barrel, a pen refill, a telescopic locking mechanism, a button, a spring, and a clip, wherein the pen refill and the telescopic locking mechanism are disposed within the pen barrel, the button is movably disposed at the rear end of the pen barrel, the telescopic locking mechanism is linked to the pen refill and the button, the spring is disposed between the front end of the pen refill and the pen barrel, 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 rear end of the pen refill abuts against the front tooth component, the side of the pen barrel is provided with an opening communicating with its inner cavity, and the clip is laterally movably disposed at the opening, characterized in that: A transmission rod connects the telescopic locking mechanism and the button. The pen clip includes a connecting end that is inserted into the inner cavity of the pen barrel along the opening. The connecting end includes a socket hole. The transmission rod is movably disposed in the socket hole. Protrusions are provided on the inner walls of the opposite sides of the socket hole. Guide slopes are provided on both sides of the transmission rod to slide and engage with the two protrusions respectively. When the transmission rod moves forward, it drives the pen clip to move closer to the pen barrel through a set of engaging protrusions and guide slopes. When the transmission rod moves backward, it drives the pen clip to move away from the pen barrel through another set of engaging protrusions and guide slopes. The front end of the transmission rod and the rear tooth component form a fixed engagement. The front end of the transmission rod and the front tooth component form a connecting engagement that allows the front tooth component to rotate relative to the transmission rod and allows the front tooth component to move forward relative to the transmission rod within a limited distance.

2. The pen capable of automatically retracting and extending its clip according to claim 1, characterized in that: Both the front and rear gear components have connecting holes at their centers. The front end of the transmission rod and the connecting hole of the rear gear component form an insertion and positioning fit. The front end of the transmission rod also has a rod-shaped connecting part. This connecting part and the connecting hole of the front gear component form a movable insertion fit that allows for circumferential rotation and axial movement. The front end of the connecting part is provided with a limiting block, which forms a limiting fit with the front gear component.

3. The pen capable of automatically retracting and extending its clip according to claim 2, characterized in that: Two elastic arms are evenly distributed at least circumferentially along the front end of the connecting part, and there is a gap between adjacent elastic arms that allows them to deform toward the center of the connecting part. A limiting block is provided on the outer side of each elastic arm.

4. The pen capable of automatically retracting and extending its clip according to claim 3, characterized in that: The connecting hole of the front tooth component is provided with a guide cone surface and / or the front end of the limiting block is provided with a chamfer.

5. The pen capable of automatically retracting and extending its clip according to claim 3, characterized in that: The front tooth component is provided with an enlarged hole for accommodating the connecting part. The enlarged hole is located at the front end of the connecting hole and is connected to the connecting hole. A first annular mating surface is formed at the connection between the enlarged hole and the connecting hole. The limiting block is mated with the first annular mating surface for limiting.

6. The pen capable of automatically retracting and extending its clip according to claim 5, characterized in that: The front end of the front tooth component is provided with a shallow pit, which is located at the front end of the enlarged hole and connected to the enlarged hole. A second annular mating surface is formed at the connection between the enlarged hole and the shallow pit. The rear end of the pen refill abuts against the second annular mating surface.

7. The pen capable of automatically retracting and extending its clip according to claim 1, characterized in that: The transmission rod has a connecting post at its rear end and a limiting plate at its front end. The pen barrel has an annular inner edge at its rear end that cooperates with the front side of the limiting plate for limiting. The button is sleeved and fixed to the rear end of the connecting post.

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