Pencil sharpener

Abstract

The pencil sharpener comprises a shell and a cover body installed on the shell, the cover body is provided with a pencil inlet, a pencil clamping mechanism is installed between the cover body and the shell and comprises a first clamping piece and a second clamping piece, the first clamping piece is connected with a first synchronizing piece, the second clamping piece is connected with a second synchronizing piece, and the first synchronizing piece is connected with a second synchronizing piece. The first clamping piece is connected with a first synchronous piece, the second clamping piece is connected with a second synchronous piece, the first synchronous piece and the second synchronous piece are in meshing transmission connection, and the first synchronous piece and the second synchronous piece are matched to enable the first clamping piece and the second clamping piece to do synchronous opposite movement so as to close the pen inlet or do synchronous back-to-back movement so as to open the pen inlet. Through meshing transmission of the first synchronous part and the second synchronous part, the first clamping part and the second clamping part keep synchronous movement, the movement distances are the same, and therefore stable clamping of the pen is achieved, and the clamping reliability is improved.

Description

Technical Field

[0001] This application relates to the field of stationery technology, and more specifically to a pencil sharpener. Background Technology

[0002] A pencil sharpener typically includes a housing, a feeding mechanism, and a sharpening mechanism. During sharpening, the pencil is fed through the feeding mechanism into the sharpening mechanism, where it is automatically fed in. The sharpening mechanism then cuts the pencil tip. However, the feeding mechanism alone cannot apply a stable clamping force to the pencil, resulting in a poorly sharpened pencil. Furthermore, the pencil is not subjected to uniform clamping force after entering the sharpener, making it prone to misalignment and damage. Therefore, a clamping mechanism is usually installed above the feeding mechanism to hold and position the pencil, preventing it from tilting during sharpening and affecting the sharpening effect. For example, the utility model patent with authorization announcement number CN217294081U discloses a pencil sharpener lead clamping mechanism, including a first clamping piece and a second clamping piece. The first clamping piece has a first clamping opening, and the second clamping piece has a second clamping opening. The first and second clamping openings cooperate to form a clamping opening. It also includes a linkage member; a first linkage groove is provided on the first clamping piece; a second linkage groove is provided on the second clamping piece; the linkage member has a rotating shaft, with one end mounted on the first linkage groove and the other end mounted on the second linkage groove. In this technical solution, the clamping pieces are linked to hold the pen by the linkage member, avoiding misalignment of the clamping pieces and resulting in pen shaft offset. However, this single linkage member links two clamping pieces, resulting in poor stability. Furthermore, the force exerted on both clamping pieces by the linkage member is concentrated at their ends, leading to uneven force distribution and easy offset, thus causing the clamping mechanism to easily deviate from the correct grip on the pen. Therefore, a pencil sharpener capable of stably and effectively holding the pen is still needed. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a pencil sharpener that, by adding a first synchronizing member and a second synchronizing member connected by a meshing transmission, enables the first clamping member and the second clamping member to move synchronously in opposite directions or in opposite directions, thereby forming a stable clamping force on the pencil and improving the pencil sharpening efficiency.

[0004] This application provides a pencil sharpener, including a housing and a cover mounted on the housing. The cover has a pencil inlet, and a pencil clamping mechanism is installed between the cover and the housing. The pencil clamping mechanism includes a first clamping member and a second clamping member. The first clamping member is connected to a first synchronizing member, and the second clamping member is connected to a second synchronizing member. The first synchronizing member and the second synchronizing member are engaged and driven together. The first synchronizing member and the second synchronizing member cooperate to make the first clamping member and the second clamping member move synchronously in opposite directions to close the pencil inlet or move synchronously in opposite directions to open the pencil inlet.

[0005] In this technical solution, a pen feeding mechanism and a pen sharpening mechanism are installed through a housing. The pen passes through the pen feeding port on the cover and is inserted into the pen feeding mechanism. The pen feeding mechanism automatically feeds the pen to the pen sharpening mechanism, which then cuts the pen tip to complete the sharpening. This solution also includes a pen clamping mechanism installed between the cover and the housing. The pen clamping mechanism holds the pen through a first clamping member and a second clamping member, forming a clamping opening for the pen to pass through. The pen passes sequentially through the pen feeding port and the clamping opening before being inserted into the pen feeding mechanism. The first clamping member is connected to a first synchronizing member, and the second clamping member is connected to a second synchronizing member. The first and second synchronizing members engage. The transmission mechanism enables the first and second clamping members to move synchronously towards or away from each other. The first and second clamping members move synchronously towards each other to close the clamping opening, i.e., close the pen inlet. The first and second clamping members move synchronously away from each other to open the clamping opening, i.e. open the pen inlet. When the pen is inserted into the clamping opening, the first and second clamping members move away from each other to move away from each other, so that the clamping opening has a sufficient size for the pen to pass through. Through the meshing transmission of the first and second synchronizing members, the first and second clamping members maintain synchronous movement and move the same distance, thereby achieving stable clamping of the pen and improving clamping reliability.

[0006] As an improvement, the first clamping member is connected to a first reset elastic member, and the first clamping member is reset by movement through the first reset elastic member; and / or, the second clamping member is connected to a second reset elastic member, and the second clamping member is reset by movement through the second reset elastic member. In this technical solution, the first clamping member and the second clamping member have at least three reset structures: one is that the first clamping member is connected to the first reset elastic member; another is that the second clamping member is connected to the second reset elastic member; and a third is that the first clamping member is connected to the first reset elastic member, and the second clamping member is connected to the second reset elastic member. The first clamping member and the second clamping member are kept in a clamped state by the first reset elastic member and / or the second reset elastic member. When the pen is removed from the clamping opening, when the first clamping member is connected to the first reset elastic member, the first clamping member is reset by movement through the first reset elastic member. The second clamping member is reset synchronously by the meshing transmission of the first synchronizing member and the second synchronizing member. The first clamping member and the second clamping member move towards each other to move closer to each other, thereby closing the clamping opening for the next use. When the pen is removed from the clamping opening, the second clamping member is connected to the first reset elastic member. When a second reset elastic element is connected, the second clamping member is reset by the movement of the second reset elastic element. The engagement of the first and second synchronizing elements causes the first clamping member to reset synchronously. The first and second clamping members move towards each other to bring them closer, thereby closing the clamping opening for future use. Similarly, when the pen is dislodged from the clamping opening, with the first clamping member connected to the first reset elastic element and the second clamping member connected to the second reset elastic element, the first clamping member is reset by the movement of the first reset elastic element, and the second clamping member is reset by the movement of the second reset elastic element. The first and second clamping members move towards each other to bring them closer. The engagement of the first and second synchronizing elements ensures that the first and second clamping members move synchronously and the same distance, thereby closing the clamping opening for future use.

[0007] As an improvement, the first synchronizing element is provided with a first gear, and the second synchronizing element is provided with a second gear. The first gear and the second gear mesh to connect the first and second synchronizing elements. In this technical solution, the first and second synchronizing elements are connected by meshing of the first and second gears, and the first and second synchronizing elements move synchronously through the first and second gears. This allows the first and second clamping elements to move synchronously in opposite directions or in opposite directions. The gear transmission structure is stable and reliable, thereby improving the clamping stability of the clamping assembly. On the other hand, the first gear and the first synchronizing element can be an integral structure or a separate structure, and the second gear and the second synchronizing element can also be an integral structure or a separate structure. The first gear and the second gear can be complete gears or half gears, with the same principle, meeting more production and usage needs.

[0008] As an improvement, both the first and second synchronizing elements are rotatably mounted between the cover and the housing. The first and second synchronizing elements rotate through meshing to drive the first and second clamping elements to move synchronously towards or away from each other. In this technical solution, both the first and second synchronizing elements are rotatably mounted. The first synchronizing element rotates under force, driving the second synchronizing element to rotate through meshing transmission. Similarly, the second synchronizing element rotates under force, driving the first synchronizing element to rotate through meshing transmission. This allows the first and second clamping elements to move synchronously towards or away from each other, making the rotational linkage method more labor-saving and reliable.

[0009] As an improvement, the first synchronizing element is provided with a first rotating shaft and a second rotating shaft, the cover is provided with a first mounting hole connected to the first rotating shaft, and the housing is provided with a second mounting hole connected to the second rotating shaft; the second synchronizing element is provided with a third rotating shaft and a fourth rotating shaft, the cover is provided with a third mounting hole connected to the third rotating shaft, and the housing is provided with a fourth mounting hole connected to the fourth rotating shaft. In this technical solution, the first synchronizing element is inserted into the first mounting hole via the first rotating shaft to rotatably connect with the cover, and the first synchronizing element is inserted into the second mounting hole via the second rotating shaft to rotatably connect with the housing, thereby allowing the first synchronizing element to be rotatably installed between the cover and the housing. Both ends of the first synchronizing element can rotate, resulting in higher rotation efficiency and more reliable rotation. Similarly, the second synchronizing element is inserted into the third mounting hole via the third rotating shaft to rotatably connect with the cover, and the second synchronizing element is inserted into the fourth mounting hole via the fourth rotating shaft to rotatably connect with the housing, thereby allowing the second synchronizing element to be rotatably installed between the cover and the housing. Both ends of the second synchronizing element can rotate, resulting in higher rotation efficiency and more reliable rotation.

[0010] As an improvement, the first synchronizing element is mounted above the first clamping element, the first gear is mounted on the second rotating shaft, the second synchronizing element is mounted above the second clamping element, and the second gear is mounted on the fourth rotating shaft. In this technical solution, the first synchronizing element is mounted above the first clamping element, the first clamping element is located between the first synchronizing element and the housing, and there is a gap between the first clamping element and the housing. Therefore, the first gear is mounted on the second rotating shaft, within the gap between the first clamping element and the housing, and the first gear and the first clamping element are on the same plane. This results in a more compact overall structure, saves more installation space, and helps reduce the overall size. Similarly, the second synchronizing element is mounted above the second clamping element, the second clamping element is located between the second synchronizing element and the housing, and there is a gap between the second clamping element and the housing. Therefore, the second gear is mounted on the fourth rotating shaft, within the gap between the second clamping element and the housing, and the second gear and the second clamping element are on the same plane. This also results in a more compact overall structure, saves more installation space, and helps reduce the overall size.

[0011] As an improvement, the first clamping member is provided with a first linkage shaft, the first synchronizing member is provided with a first strip-shaped hole slidably connected to the first linkage shaft, the second clamping member is provided with a second linkage shaft, and the second synchronizing member is provided with a second strip-shaped hole slidably connected to the second linkage shaft. In this technical solution, the first clamping member is connected to the first strip-shaped hole via the first linkage shaft to be linked with the first synchronizing member, and the second clamping member is connected to the second strip-shaped hole via the second linkage shaft to be linked with the second synchronizing member. Furthermore, both the first and second strip-shaped holes have an arc-shaped structure, enabling the conversion of linear motion into rotational motion and vice versa. When a pen is inserted into the clamping opening, the first and second clamping members move away from each other, thus ensuring that the clamping opening has sufficient size for the pen to pass through. The first clamping member is connected to the first strip-shaped hole via the first linkage shaft. The linkage shaft slides within the first slot to rotate the first synchronizing member. The first and second synchronizing members mesh at the same speed but in opposite directions, causing the second synchronizing member to rotate synchronously in opposite directions. The second synchronizing member is connected to the second linkage shaft through the second slot, and the second slot slides relative to the second linkage shaft to allow the second synchronizing member to move synchronously in opposite directions. This ensures that the first and second clamping members move synchronously and the same distance, thus achieving stable clamping of the pen. The first and second slots also prevent interference between the movements of the first and second clamping members, improving ease of use.

[0012] As an improvement, the housing is provided with a first sliding groove and a second sliding groove. The first clamping member is slidably connected to the first sliding groove, and the second clamping member is slidably connected to the second sliding groove. In this technical solution, the housing can be slidably installed with the first clamping member through the first sliding groove, and the housing can be slidably installed with the second clamping member through the second sliding groove. Both the first and second clamping members slide to move away from or towards each other, and the sliding drive method is more effortless and smoother.

[0013] As an improvement, the first and second slides are aligned on the same straight line and connected in a straight line. In this technical solution, aligning the first and second slides on the same straight line and connecting them not only saves space but also ensures that the first and second clamping members remain on the same straight line, resulting in higher clamping reliability. Furthermore, the clamping opening formed between the first and second clamping members can connect with the joint of the first and second slides, eliminating the need for a separate through hole for pen insertion. This makes the structural design more rational and simplifies production and installation.

[0014] As an improvement, the first clamping member has a first mounting cavity for accommodating the first reset elastic member, and the second clamping member has a second mounting cavity for accommodating the second reset elastic member; the housing has a first stop and a second stop, one end of the first reset elastic member abuts against the first stop, and one end of the second reset elastic member abuts against the second stop. In this technical solution, by providing a first mounting cavity in the first clamping member for mounting the first reset elastic member, and providing a first stop adapted to the first reset elastic member on the housing, with one end of the first reset elastic member abutting against the first stop and the other end abutting against the inner wall of the first mounting cavity, the first reset elastic member is installed stably and reliably; by providing a second mounting cavity in the second clamping member for mounting the second reset elastic member, and providing a second stop adapted to the second reset elastic member on the housing, with one end of the second reset elastic member abutting against the second stop and the other end abutting against the inner wall of the second mounting cavity, the second reset elastic member is installed stably and reliably. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a pencil sharpener according to this application.

[0016] Figure 2 This is an exploded view of a pencil sharpener according to this application.

[0017] Figure 3 This is a three-dimensional structural diagram of the first and second synchronization components in this application.

[0018] Figure 4 This is a partial structural diagram of the pencil sharpener of this application when the clamping opening is closed.

[0019] Figure 5 This is a partial structural diagram of the pencil sharpener of this application when the clamping opening is open.

[0020] Figure 6 This is a three-dimensional structural diagram of the pen-clamping mechanism in this application.

[0021] Figure 7 This is a three-dimensional structural diagram of the shell in this application.

[0022] The figure shows: 1. Housing; 11. Second mounting hole; 12. Fourth mounting hole; 13. First slide groove; 14. Second slide groove; 15. First stop; 16. Second stop; 2. Cover; 21. Pen inlet; 22. First mounting hole; 23. Third mounting hole; 3. Pen clamping mechanism; 31. First clamping member; 311. First linkage shaft; 312. First mounting cavity; 32. Second clamping member; 321. Second linkage shaft; 322. Second mounting cavity; 33. First reset elastic member; 34. Second reset elastic member; 4. First synchronizing member; 41. First gear; 42. First rotating shaft; 43. Second rotating shaft; 44. First strip hole; 5. Second synchronizing member; 51. Second gear; 52. Third rotating shaft; 53. Fourth rotating shaft; 54. Second strip hole. Detailed Implementation

[0023] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0024] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0025] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0026] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] like Figures 1 to 7 As shown, this application discloses a pencil sharpener, including a housing 1 and a cover 2 mounted on the housing 1. The cover 2 has a pencil inlet 21. The housing 1 is used to install a pencil feeding mechanism and a pencil sharpening mechanism. The pencil passes through the pencil inlet 21 on the cover 2 and is inserted into the pencil feeding mechanism. The pencil feeding mechanism automatically feeds the pencil to the pencil sharpening mechanism, and then the pencil sharpening mechanism cuts the pencil tip to complete the pencil sharpening. A pencil clamping mechanism 3 is installed between the cover 2 and the housing 1. The pencil clamping mechanism 3 includes a first clamping member 31 and a second clamping member 32. The pencil clamping mechanism 3 clamps the pencil through the first clamping member 31 and the second clamping member 32. A clamping opening for the pencil to pass through is formed between the first clamping member 31 and the second clamping member 32. The pencil passes through the pencil inlet 21 and the clamping opening in sequence and is then inserted into the pencil feeding mechanism.

[0028] The first clamping member 31 is connected to the first synchronizing member 4, and the second clamping member 32 is connected to the second synchronizing member 5. The first synchronizing member 4 and the second synchronizing member 5 are engaged and driven together to enable the first clamping member 31 and the second clamping member 32 to move synchronously towards or away from each other. The first clamping member 31 is connected to the first synchronizing member 4, and the second clamping member 32 is connected to the second synchronizing member 5. The engagement of the first synchronizing member 4 and the second synchronizing member 5 enables the first clamping member 31 and the second clamping member 32 to move synchronously towards or away from each other. The first clamping member 31 and the second clamping member 32 close the clamping opening, i.e., the pen inlet 21, by moving synchronously in opposite directions. The first clamping member 31 and the second clamping member 32 open the clamping opening, i.e., the pen inlet 21, by moving synchronously in opposite directions. When the pen is inserted into the clamping opening, the first clamping member 31 and the second clamping member 32 move in opposite directions to move away from each other, so that the clamping opening opens and has sufficient size for the pen to pass through. Through the meshing transmission of the first synchronizing member 4 and the second synchronizing member 5, the first clamping member 31 and the second clamping member 32 keep moving synchronously and with the same movement distance, thereby achieving stable clamping of the pen and improving clamping reliability.

[0029] More specifically, such as Figure 2 As shown, the first clamping member 31 is connected to the first reset elastic member 33, and the first clamping member 31 is reset by the movement of the first reset elastic member 33. And / or, the second clamping member 32 is connected to the second reset elastic member 34, and the second clamping member 32 is reset by the movement of the second reset elastic member 34. The first clamping member 31 and the second clamping member 32 have at least three reset structures. One is: the first clamping member 31 is connected to the first reset elastic member 33. The second is: the second clamping member 32 is connected to the second reset elastic member 34. The third is: the first clamping member 31 is connected to the first reset elastic member 33, and the second clamping member 32 is connected to the second reset elastic member 34. The first clamping member 31 and the second clamping member 32 are kept in a clamped state by the first reset elastic member 33 and / or the second reset elastic member 34.

[0030] like Figure 4 and Figure 5 As shown, when the pen is disengaged from the clamping opening, with the first clamping member 31 connected to the first reset elastic member 33, the first clamping member 31 is reset by the movement of the first reset elastic member 33. The second clamping member 32 is reset synchronously by the meshing transmission of the first synchronizing member 4 and the second synchronizing member 5. The first clamping member 31 and the second clamping member 32 move towards each other to approach each other, thereby closing the clamping opening for the next use.

[0031] like Figure 4 and Figure 5As shown, when the pen is disengaged from the clamping opening, with the second clamping member 32 connected to the second reset elastic member 34, the second clamping member 32 is reset by the movement of the second reset elastic member 34. The first clamping member 31 is reset synchronously by the meshing transmission of the first synchronizing member 4 and the second synchronizing member 5. The first clamping member 31 and the second clamping member 32 move towards each other to approach each other, thereby closing the clamping opening for the next use.

[0032] Similarly, such as Figure 4 and Figure 5 As shown, when the pen is disengaged from the clamping opening, with the first clamping member 31 connected to the first reset elastic member 33 and the second clamping member 32 connected to the second reset elastic member 34, the first clamping member 31 is reset by the movement of the first reset elastic member 33, and the second clamping member 32 is reset by the movement of the second reset elastic member 34. The first clamping member 31 and the second clamping member 32 move towards each other to get closer to each other. Through the meshing transmission of the first synchronizing member 4 and the second synchronizing member 5, the first clamping member 31 and the second clamping member 32 keep moving synchronously and the movement distance is the same, so that the clamping opening closes for the next use.

[0033] More specifically, such as Figures 2 to 5 As shown, the first synchronizing element 4 is provided with a first gear 41, and the second synchronizing element 5 is provided with a second gear 51. The first gear 41 and the second gear 51 mesh to connect the first synchronizing element 4 and the second synchronizing element 5 through transmission. The first synchronizing element 4 and the second synchronizing element 5 achieve synchronous movement through the first gear 41 and the second gear 51, thereby enabling the first clamping element 31 and the second clamping element 32 to move synchronously in opposite directions or in opposite directions. The gear transmission structure is stable and reliable, thereby improving the clamping stability of the clamping assembly. On the other hand, the first gear 41 and the first synchronizing element 4 can be an integral structure or a separate structure, and the second gear 51 and the second synchronizing element 5 can be an integral structure or a separate structure. The first gear 41 and the second gear 51 can be complete gears or half gears, with the same principle, meeting more production and use needs.

[0034] More specifically, such as Figure 2 As shown, the first synchronizing element 4 and the second synchronizing element 5 are both rotatably mounted between the cover 2 and the housing 1. The first synchronizing element 4 and the second synchronizing element 5 drive the first clamping element 31 and the second clamping element 32 to move synchronously in opposite directions or in opposite directions through meshing rotation. The first synchronizing element 4 and the second synchronizing element 5 are both rotatably mounted. The first synchronizing element 4 rotates under force and drives the second synchronizing element 5 to rotate through meshing transmission. Similarly, the second synchronizing element 5 rotates under force and drives the first synchronizing element 4 to rotate through meshing transmission. This makes the first clamping element 31 and the second clamping element 32 move synchronously in opposite directions or in opposite directions. The rotation linkage method is more labor-saving and reliable.

[0035] More specifically, such as Figure 2 As shown, the first synchronizing member 4 is provided with a first rotating shaft 42 and a second rotating shaft 43. The cover 2 is provided with a first mounting hole 22 connected to the first rotating shaft 42. The housing 1 is provided with a second mounting hole 11 connected to the second rotating shaft 43. The first synchronizing member 4 is inserted into the first mounting hole 22 through the first rotating shaft 42 to be rotatably connected to the cover 2. The first synchronizing member 4 is inserted into the second mounting hole 11 through the second rotating shaft 43 to be rotatably connected to the housing 1. Thus, the first synchronizing member 4 is rotatably installed between the cover 2 and the housing 1. Both ends of the first synchronizing member 4 can rotate, resulting in higher rotation efficiency and more reliable rotation.

[0036] The second synchronizing element 5 is provided with a third rotating shaft 52 and a fourth rotating shaft 53. The cover 2 is provided with a third mounting hole 23 connected to the third rotating shaft 52. The housing 1 is provided with a fourth mounting hole 12 connected to the fourth rotating shaft 53. The second synchronizing element 5 is inserted into the third mounting hole 23 through the third rotating shaft 52 to be rotatably connected to the cover 2. The second synchronizing element 5 is inserted into the fourth mounting hole 12 through the fourth rotating shaft 53 to be rotatably connected to the housing 1. Thus, the second synchronizing element 5 is rotatably installed between the cover 2 and the housing 1. Both ends of the second synchronizing element 5 can rotate, resulting in higher rotation efficiency and more reliable rotation.

[0037] More specifically, such as Figures 2 to 5 As shown, the first synchronizing member 4 is installed above the first clamping member 31, and the first gear 41 is installed on the second rotating shaft 43. The first clamping member 31 is located between the first synchronizing member 4 and the housing 1, and there is a gap between the first clamping member 31 and the housing 1. Thus, the first gear 41 is installed on the second rotating shaft 43, and the first gear 41 is installed in the gap between the first clamping member 31 and the housing 1. The first gear 41 and the first clamping member 31 are on the same plane, making the overall structure more compact, saving more installation space, and helping to reduce the overall size.

[0038] like Figures 2 to 5 As shown, the second synchronizing member 5 is installed above the second clamping member 32, and the second gear 51 is installed on the fourth rotating shaft 53. The second clamping member 32 is located between the second synchronizing member 5 and the housing 1, and there is a gap between the second clamping member 32 and the housing 1. Thus, the second gear 51 is installed on the fourth rotating shaft 53, and the second gear 51 is installed in the gap between the second clamping member 32 and the housing 1. The second gear 51 and the second clamping member 32 are on the same plane, making the overall structure more compact, saving more installation space, and helping to reduce the overall size.

[0039] More specifically, such as Figures 3 to 6As shown, the first clamping member 31 is provided with a first linkage shaft 311, the first synchronizing member 4 is provided with a first strip hole 44 slidably connected to the first linkage shaft 311, the second clamping member 32 is provided with a second linkage shaft 321, and the second synchronizing member 5 is provided with a second strip hole 54 slidably connected to the second linkage shaft 321. The first clamping member 31 is connected to the first strip hole 44 through the first linkage shaft 311 to be linked with the first synchronizing member 4, and the second clamping member 32 is connected to the second strip hole 54 through the second linkage shaft 321 to be linked with the second synchronizing member 5. Furthermore, both the first strip hole 44 and the second strip hole 54 have an arc-shaped structure. The first strip hole 44 and the second strip hole 54 can convert linear motion into rotational motion and vice versa.

[0040] like Figure 4 and Figure 5 As shown, when the pen is inserted into the clamping opening, the first clamping member 31 and the second clamping member 32 move away from each other, thereby opening the clamping opening to a sufficient size for the pen to pass through. The first clamping member 31 is connected to the first slotted hole 44 through the first linkage shaft 311. The first linkage shaft 311 slides within the first slotted hole 44 to rotate the first synchronizing member 4. The first synchronizing member 4 and the second synchronizing member 5 mesh at the same speed but in opposite directions, thereby causing the second synchronizing member 5 to rotate synchronously in opposite directions. The second synchronizing member 5 is connected to the second linkage shaft 321 through the second slotted hole 54. The second slotted hole 54 slides relative to the second linkage shaft 321 to cause the second synchronizing member 5 to move synchronously in opposite directions. This ensures that the first clamping member 31 and the second clamping member 32 maintain synchronous movement and move the same distance, thereby achieving stable clamping of the pen. The first slotted hole 44 and the second slotted hole 54 also prevent interference between the movements of the first clamping member 31 and the second clamping member 32, improving the smoothness of use.

[0041] More specifically, such as Figure 2 and Figure 7 As shown, the housing 1 is provided with a first sliding groove 13 and a second sliding groove 14. The first clamping member 31 is slidably connected to the first sliding groove 13, and the second clamping member 32 is slidably connected to the second sliding groove 14. The housing 1 can slide to install the first clamping member 31 through the first sliding groove 13, and the housing 1 can slide to install the second clamping member 32 through the second sliding groove 14. The first clamping member 31 and the second clamping member 32 can slide to move away from or towards each other. The sliding drive method is more effortless and smoother.

[0042] More specifically, such as Figure 2 and Figure 7As shown, the first slide groove 13 and the second slide groove 14 are on the same straight line and are connected in a straight line. Setting the first slide groove 13 and the second slide groove 14 on the same straight line and connected to each other not only saves space, but also ensures that the first clamping member 31 and the second clamping member 32 are always on the same straight line, resulting in higher clamping reliability. On the other hand, the clamping opening formed between the first clamping member 31 and the second clamping member 32 can be connected to the joint of the first slide groove 13 and the second slide groove 14, so there is no need to set up a through hole for pen to pass through. The structural design is more reasonable and the production and installation are simpler and less labor-intensive.

[0043] More specifically, such as Figure 2 , Figure 6 and Figure 7 As shown, the first clamping member 31 has a first mounting cavity 312 for accommodating the first reset elastic member 33, and the second clamping member 32 has a second mounting cavity 322 for accommodating the second reset elastic member 34. The housing 1 has a first stop 15 and a second stop 16. One end of the first reset elastic member 33 abuts against the first stop 15, and one end of the second reset elastic member 34 abuts against the second stop 16. The first mounting cavity 312 in the first clamping member 31 is used to mount the first reset elastic member 33, and the first stop 16 on the housing 1 is adapted to the first reset elastic member 33. 5. One end of the first reset elastic member 33 abuts against the first stop 15, and the other end of the first reset elastic member 33 abuts against the inner wall of the first mounting cavity 312. The first reset elastic member 33 is installed stably and reliably. A second mounting cavity 322 is provided in the second clamping member 32 for installing the second reset elastic member 34. A second stop 16 adapted to the second reset elastic member 34 is provided on the housing 1. One end of the second reset elastic member 34 abuts against the second stop 16, and the other end of the second reset elastic member 34 abuts against the inner wall of the second mounting cavity 322. The second reset elastic member 34 is installed stably and reliably.

[0044] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A pencil sharpener, comprising a housing (1) and a cover (2) mounted on the housing (1), said cover (2) having a pencil inlet (21), characterized in that, A pen clamping mechanism (3) is installed between the cover (2) and the shell (1). The pen clamping mechanism (3) includes a first clamping member (31) and a second clamping member (32). The first clamping member (31) is connected to a first synchronizing member (4), and the second clamping member (32) is connected to a second synchronizing member (5). The first synchronizing member (4) and the second synchronizing member (5) are meshed and connected. The first synchronizing member (4) and the second synchronizing member (5) cooperate to make the first clamping member (31) and the second clamping member (32) move synchronously in opposite directions to close the pen inlet (21) or move synchronously in opposite directions to open the pen inlet (21).

2. A pencil sharpener according to claim 1, characterized in that, The first clamping member (31) is connected to a first reset elastic member (33), and the first clamping member (31) is reset by the movement of the first reset elastic member (33); and / or, the second clamping member (32) is connected to a second reset elastic member (34), and the second clamping member (32) is reset by the movement of the second reset elastic member (34).

3. A pencil sharpener according to claim 1, characterized in that, The first synchronizing element (4) is provided with a first gear (41), and the second synchronizing element (5) is provided with a second gear (51). The first gear (41) and the second gear (51) mesh to make the first synchronizing element (4) and the second synchronizing element (5) drive each other.

4. A pencil sharpener according to claim 3, characterized in that, The first synchronizing element (4) and the second synchronizing element (5) are rotatably installed between the cover (2) and the shell (1). The first synchronizing element (4) and the second synchronizing element (5) drive the first clamping element (31) and the second clamping element (32) to move synchronously towards each other or away from each other by meshing and rotating.

5. A pencil sharpener according to claim 4, characterized in that, The first synchronizing element (4) is provided with a first rotating shaft (42) and a second rotating shaft (43). The cover (2) is provided with a first mounting hole (22) connected to the first rotating shaft (42). The housing (1) is provided with a second mounting hole (11) connected to the second rotating shaft (43). The second synchronizing element (5) is provided with a third rotating shaft (52) and a fourth rotating shaft (53). The cover (2) is provided with a third mounting hole (23) connected to the third rotating shaft (52). The housing (1) is provided with a fourth mounting hole (12) connected to the fourth rotating shaft (53).

6. A pencil sharpener according to claim 5, characterized in that, The first synchronizing element (4) is installed above the first clamping element (31), the first gear (41) is installed on the second rotating shaft (43), the second synchronizing element (5) is installed above the second clamping element (32), and the second gear (51) is installed on the fourth rotating shaft (53).

7. A pencil sharpener according to claim 1 or 3, characterized in that, The first clamping member (31) is provided with a first linkage shaft (311), the first synchronizing member (4) is provided with a first strip hole (44) that is slidably connected to the first linkage shaft (311), the second clamping member (32) is provided with a second linkage shaft (321), and the second synchronizing member (5) is provided with a second strip hole (54) that is slidably connected to the second linkage shaft (321).

8. A pencil sharpener according to claim 1, characterized in that, The housing (1) is provided with a first sliding groove (13) and a second sliding groove (14). The first clamping member (31) is slidably connected to the first sliding groove (13), and the second clamping member (32) is slidably connected to the second sliding groove (14).

9. A pencil sharpener according to claim 8, characterized in that, The first slide groove (13) and the second slide groove (14) are on the same straight line, and the first slide groove (13) and the second slide groove (14) are connected in a straight line.

10. A pencil sharpener according to claim 2, characterized in that, The first clamping member (31) is provided with a first mounting cavity (312) for accommodating the first reset elastic member (33), and the second clamping member (32) is provided with a second mounting cavity (322) for accommodating the second reset elastic member (34); the housing (1) is provided with a first stop (15) and a second stop (16), one end of the first reset elastic member (33) abuts against the first stop (15), and one end of the second reset elastic member (34) abuts against the second stop (16).

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