Pencil clamping mechanism and pencil sharpener

Abstract

The utility model discloses a pencil clamping mechanism and a pencil sharpener, the pencil clamping mechanism comprises a shell, the shell is provided with a first opening for a pencil to penetrate through, a first roller and a second roller are movably installed in the shell, a clamping opening communicated with the first opening is formed between the first roller and the second roller, and the first roller and the second roller are movably installed in the shell. The first rolling wheel and the second rolling wheel are stressed to move so as to adjust the size of the clamping opening, the shell is rotationally provided with a rotating disc, the rotating disc is provided with a transmission part, the transmission part penetrates through the shell to abut against the first rolling wheel and / or the second rolling wheel, the rotating disc is connected with a reset elastic piece, and the first rolling wheel and / or the second rolling wheel are / is stressed to drive the transmission part. The first rolling wheel and the second rolling wheel are kept in the clamping state through the reset elastic piece, the acting force needed for pencil entering and exiting is small, and the transmission efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of stationery products, and more specifically to a pen clamping mechanism and a pencil sharpener. Background Art

[0002] A pencil sharpener generally includes a housing, a pencil clamping mechanism and a pencil sharpening mechanism. The pencil clamping mechanism is used to fix the inserted pencil. When sharpening a pencil, the pencil is passed through the pencil clamping mechanism and then enters the pencil sharpening mechanism. The pencil is clamped by the pencil clamping mechanism, and then the pencil sharpening mechanism is used to cut the pencil manually or automatically. After the pencil is cut, the pencil is released by the pencil clamping mechanism, and finally the pencil is taken out. However, the pencil diameter that can be clamped by this pencil clamping mechanism is fixed, and it cannot be applied to pens of different shapes and different diameters, and has poor versatility.

[0003] For example, the utility model patent with publication number: CN213261774U discloses a pen feeding mechanism of a pencil sharpener, comprising: a first clamping assembly and a second clamping assembly; a gap for a pencil to pass through is provided between the first clamping assembly and the second clamping assembly, and the size of the gap is adjustable; a spring is also connected between the first clamping assembly and the second clamping assembly; and a driving assembly for driving the first clamping assembly and / or the second clamping assembly. In this technical solution, the two ends of the first clamping assembly and the second clamping assembly are respectively arranged in the first slide groove and the second slide groove, and the distance between the first clamping assembly and the second clamping assembly can be adjusted, and the two are tightened by a spring to adapt to pencils of different diameters, and the two clamping wheels clamp the pencil by the spring. However, in this solution, springs are arranged at both ends of the first clamping assembly and the second clamping assembly, and the pencil is inserted between the first clamping assembly and the second clamping assembly. The pencil pushes the first clamping assembly and the second clamping assembly from the middle to slide to both sides, so that the springs at both ends are stretched. Therefore, the force required for the pencil to enter and exit is large, and it is more laborious to use it in practice. The transmission efficiency of the entire pen feeding mechanism is low, and the efficiency of pencil entry and exit is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pencil clamping mechanism and a pencil sharpener. The pencil clamping mechanism is provided with a transmission part abutting against a first roller and / or a second roller on a rotating disk. The transmission part is driven by the first roller and / or the second roller to drive the rotating disk to rotate. The first roller and the second roller are connected to the rotating disk through a reset elastic member to maintain a clamping state of the pencil. The force required for the pencil to enter and exit is small, and the transmission efficiency is high.

[0005] The utility model provides a pencil clamping mechanism, comprising a shell, wherein the shell is provided with a first opening for a pencil to pass through, a first roller and a second roller are movably mounted in the shell, a clamping opening connected with the first opening is formed between the first roller and the second roller, the first roller and the second roller are movable under force to adjust the size of the clamping opening, a rotating disk is rotatably mounted on the shell, the rotating disk is provided with a transmission part, the transmission part passes through the shell and abuts against the first roller and / or the second roller, the rotating disk is connected with a reset elastic member, the first roller and / or the second roller are driven by force to drive the transmission part, so that the transmission part drives the rotating disk to rotate, and the first roller and the second roller are kept in a clamped state by the reset elastic member.

[0006] In the technical solution, a pencil is inserted into a clamping opening between a first roller and a second roller through a first opening, and the pencil is clamped by the first roller and the second roller. The first roller and the second roller are movably arranged in a housing seat, and the first roller and the second roller can movably adjust the size of the clamping opening according to the size of the inserted pencil, so as to be suitable for pencils of various shapes and diameters. A rotating disk is rotatably installed on the housing, and the rotating disk is provided with a second opening connected to the first opening. The pencil is inserted into the clamping opening by sequentially passing through the second opening and the first opening. The rotating disk is connected to a reset elastic member, and the reset elastic member has a rotational reset force on the rotating disk. The rotating disk is provided with a second opening connected to the first roller and / or the first roller. The transmission part has two rollers abutting against each other. When a pencil is inserted, the pencil pushes the first roller and the second roller to move relatively away from each other, so that the size of the clamping opening becomes larger to allow the pencil to pass through. The first roller and / or the second roller push the transmission part to rotate, and the transmission part drives the rotating disk to rotate synchronously. The rotating disk causes the resetting elastic member to undergo elastic deformation through rotation. The first roller and the second roller are kept in a clamped state under the elastic force of the resetting elastic member, thereby improving the efficiency of clamping the pencil. The transmission part abuts against the first roller and / or the second roller for transmission, thereby improving the transmission efficiency of the pen clamping mechanism, and the transmission is smoother. The resetting elastic member is connected to the rotating disk, has a simple structure, and has better transmission coordination, thereby improving the efficiency of pencil entry and exit.

[0007] As an improvement, a sliding part adapted to the transmission part is provided on the housing, the transmission part passes through the sliding part to abut against the first roller and / or the second roller, and the transmission part is limited by the circumferential rotation of the sliding part. In this technical solution, by providing a sliding part for the transmission part to pass through on the housing, the transmission part can pass through the sliding part to be connected to the first roller and / or the second roller, and the transmission part moves along the sliding part, and the rotation range of the transmission part is limited by the sliding part, so as to prevent the transmission part from driving the turntable to rotate too much and be difficult to reset, and the structure is simple and the transmission efficiency is high.

[0008] As an improvement, the transmission part includes a first transmission rod and a second transmission rod that are symmetrically distributed, and the sliding part includes a first slide groove and a second slide groove, the first transmission rod passes through the first slide groove to abut against the first roller, and the second transmission rod passes through the second slide groove to abut against the second roller. In this technical solution, the transmission part is configured to be composed of the first transmission rod and the second transmission rod, and the sliding part is configured to be composed of the first slide groove and the second slide groove, so that the transmission part is transmission-connected with both the first roller and the second roller, thereby improving the transmission efficiency and transmission reliability.

[0009] As an improvement, the first roller is provided with a first swing end, and the second roller is provided with a second swing end which is distributed in the opposite direction to the first swing end. The first swing end and the second swing end are both swingably mounted on the shell, and the first roller and the second roller are subjected to force to adjust the size of the clamping opening by swinging. In the technical scheme, a first swing end is provided on the first roller, and a second swing end is provided on the second roller. The first swing end and the second swing end are both swingable on the shell. The first swing end and the second swing end are swung under force, so that the first roller and the second roller are relatively far away from or close to each other, thereby changing the size of the clamping opening. The first roller and the second roller are both provided with one end which can swing to change the size of the clamping opening. The force required for the first roller and the second roller to swing is small, and the actual use is more labor-saving. The first swing end and the second swing end are arranged to be distributed in opposite directions. The first swing end and the second swing end only need to swing half of the position in the opposite direction to complete the expansion of the size of the clamping opening, which is more labor-saving to use and has higher transmission efficiency.

[0010] As an improvement, the first transmission rod is in contact with the shaft portion of the first roller near the first swing end, and the first swing end drives the first transmission rod to rotate by swinging, and the second transmission rod is in contact with the shaft portion of the second roller near the second swing end, and the second swing end drives the second transmission rod to rotate by swinging. In this technical solution, the first transmission rod is arranged to be in contact with the shaft portion of the first roller, and the shaft portion is close to the first swing end, so that the first swing end can directly drive the first transmission rod to rotate when it swings, and the transmission efficiency is higher, and the second transmission rod is arranged to be in contact with the shaft portion of the second roller, and the shaft portion is close to the second swing end, and the transmission efficiency is higher.

[0011] As an improvement, a first strip groove is provided on one side of the shell, and the first swing end is slidably installed in the first strip groove, and a second strip groove is provided on the other side of the shell, and the second swing end is slidably installed in the second strip groove. In the technical solution, a first strip groove that slidably cooperates with the first swing end is provided on one side of the first shell, so that the first swing end can both rotate and swing through the first strip groove, and a second strip groove that slidably cooperates with the second swing end is provided on the other side of the first shell, so that the second swing end can both rotate and swing through the second strip groove. The size of the shell is limited, the first swing end and the second swing end are distributed in opposite directions, and the first strip groove and the second strip groove are distributed in opposite directions, so that the first roller and the second roller can swing in a larger range on the shell, the clamping opening can adjust a larger size range, and the practicality is better. In addition, the first strip groove and the second strip groove have simple structures, and the first roller and the second roller are easy and labor-saving to install.

[0012] As an improvement, the first roller is provided with a first rotating end, the second roller is provided with a second rotating end which is distributed in the opposite direction to the first rotating end, and the first rotating end and the second rotating end are both rotatably mounted on the shell; the shell is provided with a first semicircular groove and a second semicircular groove which are distributed in the opposite direction, the first rotating end is mounted in the first semicircular groove, and the second rotating end is mounted in the second semicircular groove. In the technical scheme, the first rotating end is provided on the first roller, and the second rotating end is provided on the second roller, and the first rotating end and the second rotating end are both rotatable on the shell, and the first roller and the second roller are rotated so that the pencil can be moved in and out without obstruction, and the efficiency of moving the pencil in and out is higher; the first semicircular groove for mounting the first rotating end and the second semicircular groove for mounting the second rotating end are provided on the shell, so that the first rotating end and the second rotating end can only be rotated on the shell, and the first semicircular groove and the second semicircular groove have simple structures, so that the installation of the first rotating end and the second rotating end is convenient and labor-saving, and the rotation efficiency of the first roller and the second roller is higher.

[0013] As an improvement, a transmission assembly is installed in the housing, and the housing is connected to a tool holder assembly through the transmission assembly. The tool holder assembly is driven by force to rotate the transmission assembly relative to the housing. The transmission assembly is connected to a wheel disk, and the first roller and the second roller are both linked with the wheel disk. The transmission assembly drives the wheel disk to rotate, and the wheel disk rotates to drive the first roller and the second roller to rotate and deliver the pencil. In this technical solution, the pencil is inserted into the tool holder assembly through the housing, and the pencil tip is cut by the rotation of the tool holder assembly. The housing and the tool holder assembly are connected through the transmission assembly. The tool holder assembly is driven by force to rotate the transmission assembly relative to the housing to improve the transmission efficiency. The transmission assembly is connected to the wheel disk, and the first roller and the second roller are both linked with the wheel disk. The transmission assembly drives the wheel disk to rotate, and the wheel disk rotates to drive the first roller and the second roller to rotate. The first roller and the second roller deliver or withdraw the pen by rotating, so that the pencil can stably enter and exit the housing, and the pencil entry and exit will not be interfered by the first roller and the second roller. The transmission efficiency is good, and the efficiency of pen entry and withdrawal is high.

[0014] As an improvement, a plurality of helical teeth are evenly arranged on the wheel disc, a first gear matched with the helical teeth is arranged on the first roller, a second gear matched with the helical teeth is arranged on the second roller, and the first gear and the second gear are both meshed with the helical teeth. In the technical solution, by arranging helical teeth on the wheel disc, arranging a first gear meshed with the helical teeth on the first roller, and arranging a second gear meshed with the helical teeth on the second roller, the wheel disc rotates to drive the first roller and the second roller to rotate through the helical teeth, the transmission structure is simple, and there is a gap between adjacent helical teeth, so that the first roller and the second roller rotate stably and are not easy to get stuck, thereby improving the transmission efficiency and the efficiency of advancing and retracting the pen.

[0015] As an improvement, the reset elastic member is a coil spring, the housing is provided with a mounting post adapted to the coil spring, the turntable is provided with a third slide groove and a first through hole, the mounting post passes through the third slide groove to be connected to one end of the reset elastic member, and the other end of the reset elastic member is connected to the first through hole. In the technical scheme, the reset elastic member is set as a coil spring installed on the turntable, one end of the coil spring is connected to the mounting post, and the other end of the coil spring is connected to the first through hole. During the rotation of the turntable, the mounting post and the third slide groove move relative to each other, one end of the coil spring cannot move due to the limit of the mounting post, and the other end of the coil spring is elastically deformed by the force of the first through hole, thereby providing a clamping force to the first roller and the second roller, and after the pencil is taken out, the first roller and the second roller are not subject to the pushing force of the pencil, the turntable rotates and resets under the elastic force of the coil spring, and the turntable makes the first roller and the second roller swing and reset through the transmission part, and the coil spring has a simple structure and high transmission efficiency.

[0016] The utility model can also provide a pencil sharpener, comprising any one of the aforementioned pencil clamping mechanisms. The pencil sharpener in the technical solution is equipped with the aforementioned pencil clamping mechanism, which is provided by adding a turntable connected with a reset elastic member, and the turntable is provided with a transmission part that abuts against the first roller and / or the second roller, the first roller and the second roller are forced to move to drive the transmission part to rotate, and the transmission part drives the turntable to rotate synchronously, and the turntable causes the reset elastic member to undergo elastic deformation through rotation, and the first roller and the second roller maintain a clamping state of the pencil under the elastic force of the reset elastic member, thereby improving the pencil clamping efficiency, the force required for the pencil to enter and exit is small, and the transmission efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention discloses a three-dimensional structural schematic diagram of a pen clamping mechanism.

[0018] Figure 2 The present invention discloses an exploded structural schematic diagram of a pen clamping mechanism.

[0019] Figure 3 The present invention discloses a cross-sectional structural schematic diagram of a pen clamping mechanism.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the turntable in the present disclosure.

[0021] Figure 5 The present invention discloses a partial structural schematic diagram of a pen clamping mechanism.

[0022] As shown in the figure: 1. shell; 11. first opening; 12. first slide groove; 13. second slide groove; 14. first strip groove; 15. second strip groove; 16. first semicircular groove; 17. second semicircular groove; 18. mounting column; 2. first roller; 21. first swing end; 22. first rotating end; 23. first gear; 3. second roller; 31. second swing end; 32. second rotating end; 33. second gear; 4. turntable; 41. second opening; 42. first transmission rod; 43. second transmission rod; 44. third slide groove; 45. first through hole; 5. reset elastic member; 6. transmission assembly; 7. tool holder assembly; 8. wheel disc; 81. bevel teeth. DETAILED DESCRIPTION

[0023] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0024] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0025] It should also be understood that the terms “comprises,” “including,” “has,” “contains,” and “comprising,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0026] like Figures 1 to 5 As shown, the present application discloses a pencil clamping mechanism, comprising a housing 1, wherein the housing 1 is provided with a first opening 11 for a pencil to pass through, wherein a first roller 2 and a second roller 3 are movably mounted in the housing 1, wherein a clamping opening communicating with the first opening 11 is formed between the first roller 2 and the second roller 3, wherein the first roller 2 and the second roller 3 are movable under force to adjust the size of the clamping opening, wherein the pencil passes through the first opening 11 and is inserted into the clamping opening between the first roller 2 and the second roller 3, wherein the pencil is clamped by the first roller 2 and the second roller 3, wherein the first roller 2 and the second roller 3 are movably arranged in the housing 1 seat, wherein the first roller 2 and the second roller 3 can movably adjust the size of the clamping opening according to the size of the inserted pencil, and are suitable for pencils of various shapes and diameters;

[0027] The housing 1 is rotatably mounted with a turntable 4, the turntable 4 is provided with a transmission part, the transmission part passes through the housing 1 and abuts against the first roller 2 and / or the second roller 3, the turntable 4 is connected with a reset elastic member 5, the first roller 2 and / or the second roller 3 are driven by force to drive the transmission part, so that the transmission part drives the turntable 4 to rotate, the first roller 2 and the second roller 3 are kept in a clamped state by the reset elastic member 5, the turntable 4 is rotatably mounted on the housing 1, the turntable 4 is provided with a second opening 41 connected with the first opening 11, the pencil passes through the second opening 41 and the first opening 11 in sequence to be inserted into the clamping port, the turntable 4 is connected with the reset elastic member 5, the reset elastic member 5 has a rotational reset force on the turntable 4, and the turntable 4 is provided with a transmission part abutting against the first roller 2 and / or the second roller 3;

[0028] When a pencil is inserted, the pencil pushes the first roller 2 and the second roller 3 to move away from each other, so that the size of the clamping opening becomes larger to allow the pencil to pass through. The first roller 2 and / or the second roller 3 push the transmission part to rotate, and the transmission part drives the turntable 4 to rotate synchronously. The turntable 4 causes the resetting elastic member 5 to elastically deform by rotating. The first roller 2 and the second roller 3 are kept in a clamped state under the elastic force of the resetting elastic member 5, thereby improving the efficiency of clamping the pencil. The transmission part abuts against the first roller 2 and / or the second roller 3 for transmission, thereby improving the transmission efficiency of the pen clamping mechanism and making the transmission smoother. In addition, the resetting elastic member 5 is connected to the turntable 4, with a simple structure and better transmission coordination, thereby improving the efficiency of pencil entry and exit.

[0029] More specifically, Figures 2 to 4As shown, a sliding part adapted to the transmission part is provided on the shell 1, and the transmission part passes through the sliding part to abut against the first roller 2 and / or the second roller 3. The transmission part is limited by the circumferential rotation of the sliding part. By providing a sliding part for the transmission part to pass through on the shell 1, the transmission part can pass through the sliding part to be connected to the first roller 2 and / or the second roller 3, and the transmission part moves along the sliding part. The rotation range of the transmission part is limited by the sliding part to prevent the transmission part from driving the turntable 4 to rotate too much and be difficult to reset. The structure is simple and the transmission efficiency is high.

[0030] More specifically, Figures 2 to 4 As shown, the transmission part includes a first transmission rod 42 and a second transmission rod 43 that are symmetrically distributed, and the sliding part includes a first slide groove 12 and a second slide groove 13. The first transmission rod 42 passes through the first slide groove 12 to abut against the first roller 2, and the second transmission rod 43 passes through the second slide groove 13 to abut against the second roller 3. The transmission part is arranged to be composed of the first transmission rod 42 and the second transmission rod 43, and the sliding part is arranged to be composed of the first slide groove 12 and the second slide groove 13, so that the transmission part is transmission-connected with the first roller 2 and the second roller 3, thereby improving the transmission efficiency and transmission reliability.

[0031] More specifically, Figure 2 and Figure 5 As shown, the first roller 2 is provided with a first swing end 21, and the second roller 3 is provided with a second swing end 31 which is distributed in the opposite direction to the first swing end 21. The first swing end 21 and the second swing end 31 are both swingably mounted on the housing 1. The first roller 2 and the second roller 3 are subjected to force to adjust the size of the clamping opening by swinging. The first swing end 21 is provided on the first roller 2, and the second swing end 31 is provided on the second roller 3. The first swing end 21 and the second swing end 31 are both swingable on the housing 1. The first swing end 21 and the second swing end 31 are swung under force, so that the first roller 2 and the second roller 3 are relatively far away from or close to each other, thereby changing the size of the clamping opening. The first roller 2 and the second roller 3 are both provided with one end which can swing to change the size of the clamping opening. The force required for the first roller 2 and the second roller 3 to swing is small, and it is more labor-saving in actual use. The first swing end 21 and the second swing end 31 are arranged to be distributed in the opposite direction. The first swing end 21 and the second swing end 31 only need to relatively swing half of the position in the opposite direction to complete the expansion of the size of the clamping opening, which is more labor-saving in use and has higher transmission efficiency.

[0032] More specifically, Figure 3As shown, the first transmission rod 42 is in contact with the shaft portion of the first roller 2 close to the first swing end 21, and the first swing end 21 drives the first transmission rod 42 to rotate by swinging, and the second transmission rod 43 is in contact with the shaft portion of the second roller 3 close to the second swing end 31, and the second swing end 31 drives the second transmission rod 43 to rotate by swinging. The first transmission rod 42 is arranged to be in contact with the shaft portion of the first roller 2, and the shaft portion is close to the first swing end 21, so that the first swing end 21 can directly drive the first transmission rod 42 to rotate when it swings, and the transmission efficiency is higher. The second transmission rod 43 is arranged to be in contact with the shaft portion of the second roller 3, and the shaft portion is close to the second swing end 31, and the transmission efficiency is higher.

[0033] More specifically, Figure 2 and Figure 5 As shown, a first strip groove 14 is provided on one side of the shell 1, and the first swing end 21 is slidably installed in the first strip groove 14, and a second strip groove 15 is provided on the other side of the shell 1, and the second swing end 31 is slidably installed in the second strip groove 15. The first strip groove 14 slidingly matched with the first swing end 21 is provided on one side of the first shell 1, so that the first swing end 21 can both rotate and swing through the first strip groove 14, and the second strip groove 15 slidingly matched with the second swing end 31 is provided on the other side of the first shell 1, so that the second swing end 31 can both rotate and swing through the second strip groove 15. The size of the shell 1 is limited, the first swing end 21 and the second swing end 31 are distributed in opposite directions, and the first strip groove 14 and the second strip groove 15 are distributed in opposite directions, so that the first roller 2 and the second roller 3 can swing in a larger range on the shell 1, the clamping port can be adjusted in a larger range of sizes, and the practicality is better. In addition, the first strip groove 14 and the second strip groove 15 have simple structures, and the first roller 2 and the second roller 3 are convenient and labor-saving to install.

[0034] More specifically, Figure 2 and Figure 5 As shown, the first roller 2 is provided with a first rotating end 22, and the second roller 3 is provided with a second rotating end 32 which is distributed in the opposite direction to the first rotating end 22. The first rotating end 22 and the second rotating end 32 are both rotatably mounted on the housing 1. The first rotating end 22 is provided on the first roller 2, and the second rotating end 32 is provided on the second roller 3. The first rotating end 22 and the second rotating end 32 are both rotatable on the housing 1. The first roller 2 and the second roller 3 are rotated so that the pencil can be moved in and out without obstruction, and the efficiency of moving the pencil in and out is higher.

[0035] More specifically, Figure 2 and Figure 5As shown, the shell 1 is provided with a first semicircular groove 16 and a second semicircular groove 17 distributed in opposite directions, the first rotating end 22 is installed in the first semicircular groove 16, and the second rotating end 32 is installed in the second semicircular groove 17. The first semicircular groove 16 for installing the first rotating end 22 and the second semicircular groove 17 for installing the second rotating end 32 are provided on the shell 1, so that the first rotating end 22 and the second rotating end 32 can only rotate on the shell 1. The first semicircular groove 16 and the second semicircular groove 17 have a simple structure, so that the installation of the first rotating end 22 and the second rotating end 32 is convenient and labor-saving, and the rotation efficiency of the first roller 2 and the second roller 3 is relatively high.

[0036] More specifically, Figure 3 and Figure 5 As shown, a transmission assembly 6 is installed in the shell 1, and the shell 1 is connected to a tool holder assembly 7 through the transmission assembly 6. The tool holder assembly 7 is driven by force to drive the transmission assembly 6 to rotate relative to the shell 1. The pencil passes through the shell 1 and is inserted into the tool holder assembly 7. The tool holder assembly 7 is rotated to cut the pencil tip. The shell 1 and the tool holder assembly 7 are connected through the transmission assembly 6. The tool holder assembly 7 is driven by force to drive the transmission assembly 6 to rotate relative to the shell 1, thereby improving the transmission efficiency.

[0037] More specifically, Figure 2 and Figure 3 As shown, the transmission assembly 6 is connected with the wheel disc 8, the first roller 2 and the second roller 3 are both linked with the wheel disc 8, the transmission assembly 6 drives the wheel disc 8 to rotate, the wheel disc 8 rotates to drive the first roller 2 and the second roller 3 to rotate to feed the pen, the transmission assembly 6 is arranged to connect the wheel disc 8, and the first roller 2 and the second roller 3 are both linked with the wheel disc 8, the transmission assembly 6 drives the wheel disc 8 to rotate, the wheel disc 8 rotates to drive the first roller 2 and the second roller 3 to rotate, the first roller 2 and the second roller 3 feed or withdraw the pen by rotating, so that the pencil can stably enter and exit the housing 1, the entry and exit of the pencil will not be interfered by the first roller 2 and the second roller 3, the transmission efficiency is good, and the efficiency of feeding and withdrawing the pen is high.

[0038] More specifically, Figure 2 and Figure 3 As shown, a plurality of bevel teeth 81 are evenly arranged on the wheel disc 8, a first gear 23 adapted to the bevel teeth 81 is arranged on the first roller 2, and a second gear 33 adapted to the bevel teeth 81 is arranged on the second roller 3, and the first gear 23 and the second gear 33 are both engaged with the bevel teeth 81. By arranging the bevel teeth 81 on the wheel disc 8, arranging the first gear 23 engaged with the bevel teeth 81 on the first roller 2, and arranging the second gear 33 engaged with the bevel teeth 81 on the second roller 3, the wheel disc 8 rotates to drive the first roller 2 and the second roller 3 to rotate through the bevel teeth 81, the transmission structure is simple, and there is a gap between adjacent bevel teeth 81, so that the first roller 2 and the second roller 3 can rotate stably and not easily get stuck, thereby improving the transmission efficiency and the efficiency of advancing and retreating the pen.

[0039] More specifically, Figures 1 to 4 As shown, the reset elastic member 5 is a coil spring, a mounting post 18 adapted to the coil spring is provided on the housing 1, a third slide groove 44 and a first through hole 45 are provided on the turntable 4, the mounting post 18 passes through the third slide groove 44 to be connected with one end of the reset elastic member 5, and the other end of the reset elastic member 5 is connected with the first through hole 45, and the reset elastic member 5 is set to be a coil spring installed on the turntable 4, one end of the coil spring is connected to the mounting post 18, and the other end of the coil spring is connected to the first through hole 45. During the rotation of the turntable 4, the mounting post 18 is connected to the third slide groove 44. The three slide grooves 44 move relative to each other, one end of the coil spring is limited by the mounting column 18 and cannot move, and the other end of the coil spring is elastically deformed by the force of the first through hole 45, thereby providing a clamping force for the first roller 2 and the second roller 3, and after the pencil is taken out, the first roller 2 and the second roller 3 are not subject to the pushing force of the pencil, and the turntable 4 rotates and resets under the elastic force of the coil spring. The turntable 4 swings and resets the first roller 2 and the second roller 3 through the transmission part, and the coil spring has a simple structure and high transmission efficiency.

[0040] like Figures 1 to 5 As shown, the present embodiment further discloses a pencil sharpener, comprising any one of the aforementioned pencil clamping mechanisms, wherein the pencil sharpener is equipped with the aforementioned pencil clamping mechanism, the pencil clamping mechanism is provided by adding a turntable 4 connected with a reset elastic member 5, and the turntable 4 is provided with a transmission part abutting against the first roller 2 and / or the second roller 3, the first roller 2 and the second roller 3 are forced to move to push the transmission part to rotate, the transmission part drives the turntable 4 to rotate synchronously, the turntable 4 causes the reset elastic member 5 to undergo elastic deformation by rotating, the first roller 2 and the second roller 3 maintain a clamping state of the pencil under the elastic force of the reset elastic member 5, thereby improving the pencil clamping efficiency, the force required for the pencil to enter and exit is small, and the transmission efficiency is high.

[0041] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A pencil clamp mechanism, comprising a housing (1), the housing (1) being provided with a first opening (11) for a pencil to pass through, characterized in that: A first roller (2) and a second roller (3) are movably mounted in the shell (1); a clamping opening connected to the first opening (11) is formed between the first roller (2) and the second roller (3); the first roller (2) and the second roller (3) are movable under force to adjust the size of the clamping opening; a turntable (4) is rotatably mounted on the shell (1); the turntable (4) is provided with a transmission part, the transmission part passes through the shell (1) and abuts against the first roller (2) and / or the second roller (3); the turntable (4) is connected to a reset elastic member (5); the first roller (2) and / or the second roller (3) are driven by force to drive the transmission part, so that the transmission part drives the turntable (4) to rotate; the first roller (2) and the second roller (3) are kept in a clamped state by the reset elastic member (5).

2. A pen clamping mechanism according to claim 1, characterized in that: The housing (1) is provided with a sliding part adapted to the transmission part, the transmission part passes through the sliding part to abut against the first roller (2) and / or the second roller (3), and the transmission part is limited by circumferential rotation of the sliding part.

3. A pen clamping mechanism according to claim 2, characterized in that: The transmission part comprises a first transmission rod (42) and a second transmission rod (43) which are symmetrically distributed, and the sliding part comprises a first sliding groove (12) and a second sliding groove (13), the first transmission rod (42) passes through the first sliding groove (12) to abut against the first roller (2), and the second transmission rod (43) passes through the second sliding groove (13) to abut against the second roller (3).

4. A pen clamping mechanism according to claim 3, characterized in that: The first roller (2) is provided with a first swing end (21), and the second roller (3) is provided with a second swing end (31) which is arranged in the opposite direction to the first swing end (21); the first swing end (21) and the second swing end (31) are both swingably mounted on the housing (1); the first roller (2) and the second roller (3) are subjected to force and swing to adjust the size of the clamping opening.

5. A pen clamping mechanism according to claim 4, characterized in that: The first transmission rod (42) is in contact with the shaft portion of the first roller (2) close to the first swing end (21), and the first swing end (21) drives the first transmission rod (42) to rotate by swinging. The second transmission rod (43) is in contact with the shaft portion of the second roller (3) close to the second swing end (31), and the second swing end (31) drives the second transmission rod (43) to rotate by swinging.

6. A pen clamping mechanism according to claim 4, characterized in that: A first strip groove (14) is provided on one side of the shell (1), and the first swing end (21) is slidably mounted in the first strip groove (14); a second strip groove (15) is provided on the other side of the shell (1), and the second swing end (31) is slidably mounted in the second strip groove (15).

7. The pen clamping mechanism according to claim 4, characterized in that: The first roller (2) is provided with a first rotating end (22), the second roller (3) is provided with a second rotating end (32) which is arranged in the opposite direction to the first rotating end (22), the first rotating end (22) and the second rotating end (32) are both rotatably mounted on the housing (1); the housing (1) is provided with a first semicircular groove (16) and a second semicircular groove (17) which are arranged in the opposite direction, the first rotating end (22) is mounted in the first semicircular groove (16), and the second rotating end (32) is mounted in the second semicircular groove (17).

8. The pen clamping mechanism according to claim 1, characterized in that: A transmission assembly (6) is installed in the housing (1); the housing (1) is connected to a tool holder assembly (7) via the transmission assembly (6); the tool holder assembly (7) is subjected to force to drive the transmission assembly (6) to rotate relative to the housing (1); the transmission assembly (6) is connected to a wheel disc (8); the first roller (2) and the second roller (3) are both linked to the wheel disc (8); the transmission assembly (6) drives the wheel disc (8) to rotate; the wheel disc (8) rotates to drive the first roller (2) and the second roller (3) to rotate and deliver the pen.

9. The pen clamping mechanism according to claim 8, characterized in that: The wheel disc (8) is evenly provided with a plurality of bevel teeth (81); the first roller (2) is provided with a first gear (23) adapted to the bevel teeth (81); the second roller (3) is provided with a second gear (33) adapted to the bevel teeth (81); and both the first gear (23) and the second gear (33) are meshed with the bevel teeth (81).

10. The pen clamping mechanism according to claim 1, characterized in that: The reset elastic member (5) is a coil spring, the housing (1) is provided with a mounting post (18) adapted to the coil spring, the turntable (4) is provided with a third slide groove (44) and a first through hole (45), the mounting post (18) passes through the third slide groove (44) to be connected to one end of the reset elastic member (5), and the other end of the reset elastic member (5) is connected to the first through hole (45).

11. A pencil sharpener, characterized in that: It comprises a pen clamping mechanism as described in any one of claims 1-10.

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