Pen feed mechanism and pen sharpener having the same

Abstract

This application discloses a pen feed mechanism and a pen sharpener having the same. The pen feed mechanism includes a drive device and a pen clamp device, the drive device is connected to the pen clamp device and can operate and drive the pen clamp device, the pen clamp device includes a holder, the holder is provided with three pen clamp roller assemblies, a triangular pen clamp area into which a pencil can be inserted is formed between the three pen clamp roller assemblies, one end of the pen clamp roller assembly is rotatably connected to the holder, the other end of the pen clamp roller assembly is slidingly connected to the holder, and a clamp assembly is provided between the movable end of the pen clamp roller assembly and the holder, the clamp assembly includes a clamp member movably connected to the holder and abutting the movable end of the pen clamp roller assembly, and a restoring elastic member supported between the clamp member and the holder. The pen feed mechanism and the pen sharpener having the same are suitable for pens of different shapes and diameters, making the pen feed mechanism highly versatile.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to a Chinese invention patent bearing application number "202310898711.4", filing date "July 21, 2023", for the invention "Pen feed mechanism and pen sharpener having said pen feed mechanism", and also claims priority to a patent application bearing application number "202211328421.8", filing date "October 27, 2022", for the invention "Pen feed mechanism and pen sharpener having said pen feed mechanism". [Technical Field]

[0002] The present application relates to the technical field of stationery supplies, and more precisely to a pen feed mechanism and a pen sharpener having said pen feed mechanism. [Background technology]

[0003] Pen sharpeners are a popular pen sharpening tool among students. They include a pen feed mechanism and a pen sharpener. When sharpening a pen, the pencil is inserted into the sharpener through the pen feed mechanism. After the pencil is inserted to the appropriate position, it is clamped by the pen feed mechanism. The sharpener then sharpens the pencil. After sharpening, the pen feed mechanism can eject the pencil from the sharpener.

[0004] Patent publication number CN215474153U discloses a three-wheel pen feeder for a pen sharpener. The pen feeder includes a holder, a turntable movably mounted on the holder, and a clamping ring assembly. The turntable has a pen feed hole in the center for inserting a pen. The three clamping ring assemblies are arranged in an equilateral triangle with the pen feed hole at the center. This pen sharpener provides uniform force and stability during the sharpening process, effectively reducing lead breakage, while reducing wear on the rubber rings and ensuring normal sliding, thereby extending the product's service life. However, the clamping ring assembly of this pen feeder is fixed and cannot be adapted to pens of different shapes and diameters, resulting in poor versatility for the pen feeder. Summary of the Invention

[0005] The technical problem to be solved by the present application is to provide a pen feed mechanism that is suitable for pens of different shapes and diameters and has high versatility.

[0006] The technical solution aspect of the present application is to provide a pen feed mechanism having the following structure, which includes a drive device and a pen clamp device, the drive device is connected to the pen clamp device and can operate and drive the pen clamp device, the pen clamp device includes a holder, the holder is provided with three pen clamp roller assemblies, and a triangular pen clamp area into which a pencil can be inserted is formed between the three pen clamp roller assemblies, one end of the pen clamp roller assembly is rotatably connected to the holder, and the other end of the pen clamp roller assembly is slidingly connected to the holder, a clamp assembly is provided between the movable end of the pen clamp roller assembly and the holder, the clamp assembly includes a clamp member movably connected to the holder and abutting the movable end of the pen clamp roller assembly, and a restoring elastic member supported between the clamp member and the holder.

[0007] Using the above structure, the pen feed mechanism of the present application has the following advantages over the prior art.

[0008] One end of the pen clamp roller assembly of the pen feed mechanism of the present application is rotatably connected to the holder, and the other end of the pen clamp roller assembly is slidably connected to the holder, and when pencils of different shapes and sizes are inserted into the triangular pen clamp area, the other end of the pen clamp roller assembly adjusts its position. A clamp assembly is provided between the movable end of the pen clamp roller assembly and the holder, a clamp member is movably connected to the holder and abuts against the movable end of the pen clamp roller assembly, and a restoring elastic member is supported between the clamp member and the holder, and when the other end of the pen clamp roller assembly moves outward, the clamp member applies an elastic thrust to the other end of the pen clamp roller assembly, thereby keeping the pen clamp roller assembly in constant contact with the pencil.

[0009] As an improvement, the restoring elastic member is an elastic hoop, which covers the outside of the other end of the three clamp members, and the synchronizer is rotatably connected to the holder, one end of the elastic hoop is connected to the holder, and the other end of the elastic hoop is connected to the synchronizer, and when the elastic hoop is pressed by the clamp members and twisted, it can rotate the synchronizer. Using this structure, the elastic hoop covers the outside of the other end of the clamp members, ensuring the synchronization of the movement of the clamp members and preventing the movement of the pen clamp roller assembly from being eccentric.

[0010] In an improved version, a synchronization member is mounted above the clamp member, and a sliding rail is provided on the synchronization member at a position corresponding to the clamp member. The lower end of the clamp member is hingedly connected to the holder, and the upper end of the clamp member is slidably fitted within the sliding rail. The synchronization member rotates to drive the clamp member, while the upper end of the clamp member slides along the sliding rail. With this structure, when pencils of different shapes and sizes are inserted into the triangular pen clamp area, the movable end of the pen clamp roller assembly is pressed and moves, pushing the clamp member to rotate further. The elastic hoop is twisted under force, thereby rotating the synchronization member. The synchronization member rotates to drive the upper end of the clamp member to slide along the sliding rail, and simultaneously opens and closes the upper end of the clamp member 10 around its lower end, ensuring that the pen is always centered between the three pen clamp roller assemblies when sharpening, making the pen sharpener more stable and consistent.

[0011] As an improvement, the sliding direction of the slide rail crosses the swing direction of the clamping member, and with this structure, even if the synchronizing member rotates, it does not affect the rotation of the clamping member, and a good cooperative effect is achieved.

[0012] As an improvement, the holder includes an upper cover, the upper cover is connected to the side of the holder close to the synchronizing member, the synchronizing member is pivotally connected to the upper side of the upper cover, an elastic hoop is provided between the upper cover and the synchronizing member, and one end of the elastic hoop is connected to the upper cover. With this structure, the upper cover can be provided to protect the internal structure, and the structure is more reliable.

[0013] As an improvement, the top cover is provided with a first pen insertion hole above the triangular pen clamp area, the orthogonal projection of the first pen insertion hole covers a part of the roller of the pen clamp roller assembly, the top cover is provided with a matching hole, and the other end of the clamp member passes through the matching hole and fits into the slide rail. This structure is simple and reliable, and easy to assemble.

[0014] As an improvement, a number of positioning posts are provided on the side of the upper cover near the synchronizing member, and the synchronizing member is provided with a rotating rail hole that matches the positioning posts, and the ends of the positioning posts are fitted into the rotating rail hole, so that when the synchronizing member is rotated by the elastic hoop, the positioning posts and the rotating rail hole slide relative to each other. With this structure, the positioning posts can regulate the movement trajectory of the synchronizing member, and the synchronizing member can accurately drive the clamping member, achieving the effect of synchronous rotation of the clamping member.

[0015] As an improvement, a fourth pen insertion hole is provided in the center of the synchronizing member, and the fourth pen insertion hole is aligned with the first pen insertion hole. An insertion hole is provided in the synchronizing member, and one end of the elastic hoop is bent upward to form an insertion needle, which is inserted into the insertion hole. This structure provides good positioning effect for the pencil and makes assembly between the elastic hoop and the synchronizing member easy.

[0016] As an improvement, a column is further provided on the side of the top cover close to the synchronizing member, and a ring is provided on one end of the elastic hoop, and the ring covers the outside of the column. With this structure, the assembly structure between the top cover and the elastic hoop is simple and easy to assemble.

[0017] As an improvement, the holder is provided with a first support wall and a second support wall, the pen clamp roller assembly is provided between the first support wall and the second support wall, the pen clamp roller assembly includes a rotating shaft, one end of the rotating shaft is rotatably connected to the first support wall, the second support wall is provided with a sliding groove, and the other end of the rotating shaft is slidably fitted in the sliding groove. Using this structure, the assembly structure of the pen clamp roller assembly is simple and easy to assemble.

[0018] As an improvement, the second support wall is provided with a receiving chamber, the receiving chamber is connected to the sliding groove, the clamp member is movably mounted in the receiving chamber, one side of the clamp member abuts against the movable end of the rotating shaft, and the other end of the rotating shaft slides to push the clamp member outward. Using this structure, the assembly structure of the clamp member is simple and easy to assemble, and the receiving chamber can restrict the movement range of the clamp member, making the movement of the clamp member more stable.

[0019] As an improvement, one end of the clamping member is hingedly connected to the side wall of the receiving chamber, one side of the center of the clamping member abuts against the other end of the rotating shaft, and the other end of the clamping member is connected to the elastic restoring member. With this structure, the center of the clamping member abuts against the other end of the rotating shaft, thereby increasing the contact area between the clamping member and the rotating shaft and improving the clamping effect.

[0020] As an improvement, one side of the central part of the clamping member is an arcuate surface, and the arcuate surface abuts the other end of the rotating shaft. With this structure, the arcuate surface of the clamping member contacts the other end of the rotating shaft, and by setting the radian of the arcuate surface, the clamping force of the clamping member can be effectively controlled, resulting in a good clamping effect.

[0021] As an improvement, the roller of the pen clamp roller assembly is mounted on a rotating shaft, and a gear is further mounted on the rotating shaft, and the gear is connected to a driving device, and the driving device rotates the gear, so that the rotating shaft and the roller can rotate synchronously. With this structure, the rotating shaft and the roller are driven and rotated by the gear, which has a simple structure and good operating efficiency. As an improvement, a third support wall is provided between the first and second support walls of the holder, and the third support wall is supported on the underside of the portion of the rotating shaft between the gear and the roller. With this structure, the action of the third support wall makes the mounting of the rotating shaft more stable.

[0022] As an improvement, a first groove is provided on the upper surface of the third support wall, and the pivot shaft is embedded in the first groove. Using this structure, the pivot shaft can be attached reliably.

[0023] As an improvement, a bushing is connected to one side of the gear, a shaft hole is provided in the center of the gear, the shaft hole is coaxial with and communicates with the through hole of the bushing, at least one regulating plane is provided on the side wall of the pivot shaft, the shape of the shaft hole of the gear and the shape of the through hole of the bushing both match the cross section of the pivot shaft, the gear and the bushing cover the outside of the pivot shaft, one end of the bushing abuts against the roller, and the bushing is embedded in the first groove. Using this structure, the structure is simple and easy to assemble.

[0024] As an improvement, a mounting hole is provided in the center of the roller, and a connecting sleeve is provided in the mounting hole, the shape of the through hole of the connecting sleeve matches the cross-sectional shape of the rotating shaft, and the connecting sleeve is tightly fitted to the outside of the rotating shaft and abuts against the outside of the bushing. Using this structure, the roller mounting structure is simple and easy to assemble.

[0025] As an improvement, a restricting seat is provided on the rotating shaft at the outer side of the gear, and the restricting seat is restricted to the outer side of the gear. With this structure, the restricting seat has a restricting effect on the gear.

[0026] As an improvement, a spherical head is provided at the end of the rotating shaft close to the gear, and a recessed groove that fits the spherical head is provided on the side wall of the first support wall, and the spherical head is rotatably connected within the recessed groove. With this structure, a spherical head is provided at the end of the rotating shaft, and the spherical head is combined with the recessed groove, making it flexible in movement.

[0027] As an improvement, a protruding post is provided at the end of the rotating shaft near the roller, and the cross section of the protruding post is circular, and the protruding post is attached to the groove bottom of the sliding groove by rolling. Using this structure, the protruding post can flexibly rotate on the groove bottom of the sliding groove.

[0028] As an improvement, a regulating ring for inserting a pencil is provided in the center of the holder, and the regulating ring is connected to the second and third support walls. The regulating ring is hung directly above the triangular pen clamp area, and the orthogonal projection of the regulating ring covers part of the roller. Using this structure, the regulating ring can position the pencil and make the pen sharpener more stable.

[0029] As an improvement, the driving device includes a base, in which a driving member, a transmission assembly and a toothed disk are provided, the driving member is used to connect to a driving source, the transmission assembly is connected between the driving member and the toothed disk, the toothed disk is provided with a plurality of moving teeth, the driving member can rotate the toothed disk through the transmission assembly, when the toothed disk rotates, the moving teeth can rotate the gear of the pen clamp roller assembly, thereby rotating the roller of the pen clamp roller assembly. Using this structure, the driving device has a simple structure, is easy to assemble, and moves the gear to rotate the moving teeth on the toothed disk, so the driving method and structure are simple, and the driving effect is good.

[0030] As an improvement, a partition plate is provided in the center of the base, the partition plate divides the chamber of the base into a first chamber and a second chamber, a connecting hole is provided in the center of the partition plate, the transmission assembly includes a first drive gear, the center of the first drive gear is rotatably connected to the connecting hole, one end of the first drive gear is provided with a gear part, the gear part protrudes into the first chamber, a toothed disk is housed in the first chamber and the gear part is transmission-connected to the toothed disk, the other end of the first drive gear is provided with a connecting part, the connecting part protrudes into the second chamber, a drive member is housed in the second chamber and the connecting part is connected to the drive member. Using this structure, the transmission assembly is simple in structure and has good transmission effect. The partition plate divides the base chamber into a first chamber and a second chamber, the toothed disc is housed in the first chamber, and the drive member is housed in the second chamber, so that they do not affect each other and the structure is reliable.

[0031] As an improvement, the transmission assembly further includes a plurality of second drive gears, the second drive gears are accommodated in the first chamber and are rotatably connected to the partition plate, one side of the second drive gears meshes with the gear portion of the first drive gear, a flange is provided on the edge of the toothed disc close to the second drive gear, a ring gear is provided on the inner wall of the flange, the toothed disc covers the outside of the second drive gear, and the other end of the second drive gear meshes with the ring gear. With this structure, the second drive gears drive between the ring gear and the gear portion of the first drive gear, which is simple in structure and easy to assemble.

[0032] As an improvement, a second pen insertion hole is provided in the center of the toothed disc, a shaft hole is provided in the center of the first driving gear, the shaft hole and the second pen insertion hole are aligned, an elastic locking part is provided on the side of the toothed disc close to the first driving gear, and a restricting step is provided in the shaft hole, the elastic locking part is inserted into the shaft hole and engaged with the restricting step, so that the toothed disc and the first driving gear can rotate relative to each other. Using this structure, the toothed disc and the first driving gear are assembled together via the elastic locking part and the restricting step, making the structure more stable and reliable.

[0033] As an improvement, the driving member has a lid-like structure, a third pen insertion hole is provided in the center of the driving member, the third pen insertion hole and the second pen insertion hole are aligned, and a convex ring is provided in the center of the driving member near the connection part, the convex ring is embedded in the shaft hole of the first driving gear, and the convex ring has connection teeth on its inner wall for connecting to the driving source. Using this structure makes the structure simple and easy to assemble.

[0034] As an improvement, the outer wall of the connection part of the first drive gear is provided with a plurality of elastic sheets, which are accommodated between the convex ring and the side wall of the drive member, with protrusions on the ends of the elastic sheets, and the inside of the side wall of the drive member is provided with second grooves that mate with the protrusions, and the protrusions are embedded in the second grooves. Using this structure, the structure of the first drive gear and the drive member is simple, assembly is easy, and the connection effect is good.

[0035] Another technical problem to be solved by the present application is to provide a pen sharpener including a pen feed mechanism that is suitable for pens of different shapes and diameters and is highly versatile.

[0036] The technical solution aspect of the present application is to provide a pen sharpener having the following structure, the pen sharpener including a housing, in which a pen feed mechanism and a pen sharpener mechanism having the above-mentioned structure are provided, the pen feed mechanism is provided above the pen sharpener mechanism, and the pen feed mechanism is connected to the pen sharpener mechanism.

[0037] With the above structure, the pen sharpener of the present application has the following advantages over the prior art.

[0038] One end of the pen clamp roller assembly of the pen feed mechanism of the pen sharpener of the present application is rotatably connected to the holder, and the other end of the pen clamp roller assembly is slidably connected to the holder, and when pencils of different shapes and sizes are inserted into the triangular pen clamp area, the other end of the pen clamp roller assembly adjusts its position. A clamp assembly is provided between the movable end of the pen clamp roller assembly and the holder, a clamp member is movably connected to the holder and abuts against the movable end of the pen clamp roller assembly, and a restoring elastic member is supported between the clamp member and the holder, and when the other end of the pen clamp roller assembly moves outward, the clamp member applies an elastic thrust to the other end of the pen clamp roller assembly, thereby keeping the pen clamp roller assembly in constant contact with the pencil. [Brief explanation of the drawings]

[0039] [Figure 1] FIG. 2 is a perspective structural schematic diagram of the pen feed mechanism of the present application; [Figure 2] 1 is a schematic exploded view of the pen clamp device of the pen feed mechanism of the present application. FIG. [Figure 3] 1 is a schematic exploded view of a part of the pen clamp device of the pen feed mechanism of the present application. FIG. [Figure 4] 1 is a schematic diagram of the assembly structure of the pen clamp roller assembly and holder of the pen feed mechanism of the present application; FIG. [Figure 5] 1 is a schematic view of the assembly structure of the pen clamp roller assembly and holder of the pen feed mechanism of the present application at another angle. FIG. [Figure 6] 1 is an exploded structural schematic diagram of the pen clamp roller assembly and holder of the pen feed mechanism of the present application; FIG. [Figure 7] FIG. 2 is an exploded structural schematic diagram of the pen clamp roller assembly of the pen feed mechanism of the present application. [Figure 8] 1 is a perspective structural schematic diagram of a driving device of a pen feed mechanism of the present application; [Figure 9] FIG. 2 is a perspective structural schematic diagram of the driving device of the pen feed mechanism of the present application at another angle; [Figure 10] 2 is a schematic exploded structural view of a part of the driving device of the pen feed mechanism of the present application; [Figure 11] FIG. 2 is a perspective structural schematic diagram of a first driving gear of the pen feed mechanism of the present application. [Figure 12] 1 is a schematic exploded view of the drive device of the pen feed mechanism of the present application; [Figure 13] 1 is a schematic assembly diagram of a part of the driving device of the pen feed mechanism of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0040] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the drawings. It should be understood that these detailed descriptions do not limit the scope of the present application in any way, but are merely descriptions of exemplary embodiments of the present application. Like reference numerals refer to like elements throughout the specification.

[0041] In the drawings, thicknesses, dimensions, and shapes of objects are exaggerated for clarity of illustration. The drawings are for illustrative purposes only and are not drawn to scale.

[0042] It should also be understood that the terms "comprise," "contain," "have," "comprise," "contained," and "include," when used herein, refer to the presence of features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, and / or combinations thereof.

[0043] As shown in FIG. 1, the present application discloses a pen feed mechanism, which includes a driving device and a pen clamping device, and the driving device is connected to the pen clamping device, and the driving device can operate and drive the pen clamping device.

[0044] As shown in Figures 2 to 7, the pen clamp device includes a holder 1, an upper cover 2, and a synchronization member 3. The holder 1 is provided with three pen clamp roller assemblies, all of which have the same structure and mounting structure, and a triangular pen clamp area 4 is formed between the three pen clamp roller assemblies, into which a pencil can be inserted.

[0045] One end of the pen clamp roller assembly is rotatably connected to the holder 1, and the other end of the pen clamp roller assembly is slidably connected to the holder 1. A clamp assembly is provided between the movable end of the pen clamp roller assembly and the holder 1. The clamp assembly includes a clamp member 10 and a restoring elastic member. The clamp member 10 is movably connected to the holder 1 and abuts against the movable end of the pen clamp roller assembly, and the restoring elastic member is supported between the clamp member 10 and the holder 1. Using the above structure, the pen feed mechanism of the present application has the following advantages.

[0046] One end of the pen clamp roller assembly of the pen feed mechanism of the present application is rotatably connected to the holder, and the other end of the pen clamp roller assembly is slidably connected to the holder 1, so that when pencils of different shapes and sizes are inserted into the triangular pen clamp area, the other end of the pen clamp roller assembly adjusts its position. A clamp assembly is provided between the movable end of the pen clamp roller assembly and the holder 1, a clamp member 10 is movably connected to the holder 1 and abuts against the movable end of the pen clamp roller assembly, and a restoring elastic member is supported between the clamp member 10 and the holder 1, so that when the other end of the pen clamp roller assembly moves outward, the clamp member 10 applies an elastic thrust to the other end of the pen clamp roller assembly, thereby keeping the pen clamp roller assembly in constant contact with the pencil.

[0047] In one embodiment, the restoring elastic member is an elastic hoop 11, which covers the outside of the other end of the three clamping members 10, and the synchronizer member 3 is rotatably connected to the holder 1, one end of the elastic hoop 11 is connected to the holder 1, and the other end of the elastic hoop 11 is connected to the synchronizer member 3, and when the elastic hoop 11 is pressed by the clamping members 10 and twisted, it can rotate the synchronizer member 3.

[0048] With this structure, the elastic hoop 11 is hooked onto the outside of the other end of the clamp member 10, ensuring the synchronization of the movement of the clamp member 10 and preventing the movement of the pen clamp roller assembly from becoming eccentric.

[0049] In one embodiment, as shown in FIGS. 2, 4, and 7, the pen clamp roller assembly includes a pivot shaft 5, a roller 6, and a gear 7. The side wall of the pivot shaft 5 is provided with at least one regulating plane 501, and in this specific embodiment, the cross section of the pivot shaft 5 is rectangular. A circular regulating sheet 8 is provided on the side wall at one end of the pivot shaft 5. A bushing 701 is connected to one side of the gear 7, and the bushing 701 and the gear 7 are integrally molded. A shaft hole is provided in the center of the gear 7, and the shaft hole is coaxial with and communicates with the through hole of the bushing 701. The shapes of the shaft hole and the through hole of the bushing 701 both match the shape of the pivot shaft 5, and the gear 7 and the bushing 701 cover the outside of the pivot shaft 5, and the end face of the gear 7 abuts against the regulating sheet 8. An attachment hole is provided in the center of the roller 6, and a connecting sleeve 9 is provided in the attachment hole. An embedded ring 901 is provided on the outer circumferential wall of the connecting sleeve 9. The roller 6 is made of rubber, and the inner ring of the roller 6 is embedded in the embedded ring 901. The shape of the through hole of the connecting sleeve 9 matches the shape of the rotating shaft 5, and the connecting sleeve 9 covers the outside of the rotating shaft 5 and fits tightly with it. One end of the connecting sleeve 9 abuts against the end face of the bushing 701.

[0050] In one embodiment, one side of the central portion of the clamping member 10 is an arcuate surface 1001, which abuts against the other end of the rotating shaft 5. With this structure, the arcuate surface 1001 of the clamping member 10 contacts the other end of the rotating shaft 5, and by setting the radian of the arcuate surface 1001, the clamping force of the clamping member 10 can be effectively controlled, resulting in a good clamping effect.

[0051] 6 and 7, the holder 1 is provided with a first support wall 101, a second support wall 102, and a third support wall 103. A spherical head 502 is provided at the end of the rotating shaft 5 close to the gear 7, and the spherical head 502 is provided outside the regulating sheet 8. A recess 104 that fits with the spherical head 502 is provided in the side wall of the first support wall 101, and the spherical head 502 is rotatably connected within the recess 104. The third support wall 103 is provided below the bushing 701 on the rotating shaft 5, and a first recess 105 is provided on the upper end surface of the third support wall 103, and the bushing 701 is recessed within the first recess 105. A sliding groove 106 is provided on the second support wall 102, and a protruding post 503 is provided at the end of the rotating shaft 5 close to the roller 6. The cross section of the protruding post 503 is circular and the protruding post 503 is mounted by rolling on the bottom of the sliding groove 106, so that when the rotating shaft 5 is subjected to force, the protruding post 503 can slide back and forth along the bottom of the sliding groove 106. Each pen clamp roller assembly is mounted on the holder 1 via the first support wall 101, the second support wall 102 and the third support wall 103, and the mounting structure is the same for all of them.

[0052] In one embodiment, a limiting ring 107 for inserting a pencil is provided in the center of the holder 1, and the limiting ring 107 is connected to all of the second support walls 102 and the third support walls 103 of the holder 1. The limiting ring 107 is hung directly above the triangular pen clamp area 4, and the orthogonal projection of the limiting ring 107 covers part of the roller 6. Using the limiting ring 107 can position the pencil and make the pen sharpener more stable.

[0053] In one embodiment, a clamp assembly is provided on the holder 1 near the protruding post 503, and the clamp assembly includes a clamp member 10 and an elastic return member. The second support wall 102 is provided with an accommodating chamber 108, which is open at both the top and bottom. The accommodating chamber 108 communicates with the sliding groove 106, and the end of the protruding post 503 extends into the accommodating chamber 108. The lower end of the clamp member 10 is hingedly connected to the side wall of the accommodating chamber 108, and one side of the central portion of the clamp member 10 abuts against the protruding post 503. The central portion of the clamp member 10 is provided with an arcuate surface 1001 on the side closest to the protruding post 503. The arcuate surface 1001 abuts against the outer wall of the protruding post 503, and the protruding ring 1301 slides outward, pushing the clamp member 10 to rotate around the connection point at the lower end of the clamp member 10.

[0054] In one embodiment, the top cover 2 is connected to the top side of the holder 1 and covers the pen clamp roller assembly. A first pen insertion hole 201 is provided in the center of the top cover 2, and the first pen insertion hole 201 is located directly above the triangular pen clamp area 4. The orthogonal projection of the first pen insertion hole 201 covers a part of the roller 6 of the pen clamp roller assembly. A matching hole 202 is provided in the top cover 2, and the upper end of the clamp member 10 is exposed to the outside of the top cover 2 through the matching hole 202, and the clamp member 10 can move within the matching hole 202. The restoring elastic member is an elastic hoop 11, and the elastic hoop 11 is engaged with the outside of the upper end of the clamp member 10.

[0055] When this structure is used, the upper cover 2 is provided, which can protect the internal structure, and the structure is more reliable.

[0056] 2 and 3, the top cover 2 is provided with a synchronizing member 3, which has a fourth pen insertion hole 301 at its center, and which is aligned with the first pen insertion hole 201. The synchronizing member 3 is provided with a sliding rail 302, and one end of the clamping member 10 is hingedly connected to the holder, and the other end of the clamping member 10 is inserted into the sliding rail 302. The clamping member 10 and the sliding rail 302 are slidably coupled together, and the synchronizing member 3 can rotate to drive the clamping member 10, while the upper end of the clamping member 10 slides along the sliding rail 302. With this structure, when pencils of different shapes and sizes are inserted into the triangular pen clamping area, the movable end of the pen clamp roller assembly is pressed and moves, pushing the clamping member 10 to rotate further. The elastic hoop 11 is twisted under force, thereby rotating the synchronizing member 3. The synchronization member 3 rotates to drive the upper end of the clamping member 10 to slide along the sliding rail 302, and at the same time, the upper end of the clamping member 10 can be opened and closed with the lower end as the center, thereby ensuring that the pen is always in the middle of the three pen clamp roller assemblies when sharpening the pen, making the pen sharpening more stable and less eccentric.

[0057] In one specific embodiment, the sliding rail 302 has a hole-like structure. The elastic hoop 11 is disposed in the space between the synchronizing member 3 and the top cover 2. One end of the elastic hoop 11 is connected to the synchronizing member 3, i.e., the synchronizing member 3 is provided with an insertion hole 303, one end of the elastic hoop 11 is bent upward to form an insertion needle 1101, which is inserted into the insertion hole 303. The other end of the elastic hoop 11 is connected to the top cover 2, i.e., the top cover 2 is provided with a column 203, and the other end of the elastic hoop 11 is provided with a ring 1102, which covers the outside of the column 203. This structure provides good pencil positioning effect, facilitates assembly between the elastic hoop 11 and the synchronizing member 3, and simplifies the assembly structure between the top cover 2 and the elastic hoop 11, facilitating assembly.

[0058] In one embodiment, the sliding direction of the sliding rail 302 crosses the swinging direction of the clamping member 10. With this structure, even if the synchronizing member 3 rotates, it does not affect the rotation of the clamping member 10, resulting in a good cooperation effect.

[0059] A plurality of positioning posts 204 are provided on the side of the upper cover 2 close to the synchronizing member 3, and the synchronizing member 3 is provided with pivot rail holes 304 that mate with the positioning posts 204. The ends of the positioning posts 204 are fitted into the pivot rail holes 304, and when the synchronizing member 3 is rotated by the elastic hoop 11, the positioning posts 204 and the pivot rail holes 304 slide relative to each other. The positioning posts 204 are located inside the elastic hoop 11. With this structure, the positioning posts 204 can regulate the movement trajectory of the synchronizing member 3, allowing the synchronizing member 3 to accurately drive the clamping member 10 and achieve the effect of synchronously rotating the clamping member 10.

[0060] 8 to 13, in one embodiment of the present application, the driving device includes a base 12, in which a driving member 13, a transmission assembly, and a toothed disc 14 are provided. The base 12 has openings at both the upper and lower ends, and a partition plate 1201 is provided in the center of the base 12, which divides the chamber of the base 12 into a first chamber 1202 and a second chamber 1203, and a connecting hole 1204 is provided in the center of the partition plate 1201. The transmission assembly includes a first driving gear 15, and the center of the first driving gear 15 is rotatably connected within the connecting hole 1204.

[0061] In one embodiment, one end of the first driving gear 15 is provided with a gear portion 1501, which protrudes into the first chamber 1202, the toothed disc 14 is housed in the first chamber 1202, and the gear portion 1501 is transmission-connected to the toothed disc 14. The transmission assembly further includes a plurality of second driving gears 16, and in this embodiment, there are three second driving gears 16, which are housed in the first chamber 1202 and rotatably connected to the partition plate 1201, i.e., a connecting shaft is provided at the center of the second driving gear 16, and the partition plate 1201 is provided with a shaft through-hole, the connecting shaft is rotatably inserted into the shaft through-hole, and one side of the second driving gear 16 meshes with the gear portion 1501 of the first driving gear 15. A flange 1401 is provided on the edge of the toothed disc 14 close to the second drive gear 16, and a ring gear 1402 is provided on the inner wall of the flange 1401. The toothed disc 14 covers the outside of the second drive gear 16, and the other end of the second drive gear 16 meshes with the ring gear 1402.

[0062] A second pen insertion hole 1403 is provided in the center of the toothed disc 14, an axial hole is provided in the center of the first driving gear 15, and the axial hole and the second pen insertion hole 1403 are aligned, and an elastic engagement part 1404 is provided on the side of the toothed disc 14 closer to the first driving gear 15, and a restricting step 1502 is provided in the axial hole, and the elastic engagement part 1404 is inserted into the axial hole and engaged with the restricting step 1502, so that the toothed disc 14 and the first driving gear 15 can rotate relative to each other. The holder 1 of the pen clamp device is connected to the upper end of the base 12, and the toothed disc 14 is located below the pen clamp roller assembly. The toothed disk 14 has a plurality of moving teeth 1405 on the edge of the end face closer to the pen clamp roller assembly, and the gear 7 meshes with one of the moving teeth 1405. When the toothed disk 14 rotates, the gear 7 is moved by different moving teeth 1405 in turn and rotates.

[0063] A connecting portion 1503 is provided at the other end of the first driving gear 15, and the connecting portion 1503 is inserted into the second chamber 1203. The driving member 13 is housed in the second chamber 1203, and the connecting portion 1503 is connected to the driving unit. The driving member 13 has a lid-like structure, and a third pen insertion hole is provided in the center of the driving member 13, and the third pen insertion hole and the second pen insertion hole 1403 are aligned. A convex ring 1301 is provided in the center of the driving member 13 on the side closer to the connecting portion 1503, and the convex ring 1301 is embedded in the shaft hole of the first driving gear 15. The convex ring 1301 has connecting teeth 1302 on its inner wall for connecting to a driving source.

[0064] In one embodiment, a plurality of elastic sheets 1504 are provided on the outer peripheral wall of the connection part 1503 of the first driving gear 15, and the elastic sheets 1504 are accommodated between the convex ring 1301 and the side wall of the driving member 13. Protrusions are provided on the ends of the elastic sheets 1504, and second grooves 1303 that fit with the protrusions are provided on the inner side of the side wall of the driving member 13, and the protrusions are embedded in the second grooves 1303. Using this structure, the structure between the first driving gear 15 and the driving member 13 is simple, assembly is easy, and the connection effect is good. In the operation of the pen feed mechanism disclosed in this application, the drive source rotates the drive member 13, thereby rotating the first drive gear 15, the first drive gear 15 rotates to rotate the second drive gear 16, thereby rotating the toothed disc 14, and when the toothed disc 14 rotates, the moving teeth 1405 on the toothed disc 14 can rotate the gear 7, thereby rotating the pivot shaft 5 and the rollers 6. The drive source can rotate the drive member 13 in a forward or reverse direction, thereby rotating all three rollers 6 inward or outward directions, and when all three rollers 6 rotate inward, a pencil can be inserted into the pen feed mechanism, and conversely, when all three rollers 6 rotate outward, a pencil can be ejected from the pen feed mechanism.

[0065] Pencils of different diameters or shapes pass through the fourth pen insertion hole 301 and the first pen insertion hole 201 in sequence and then enter the triangular pen clamping area 4. The rotating shaft 5 is pressed by the pencil, and the protruding post 503 at its end slides within the sliding groove 106. The sliding of the protruding post 503 pushes the clamping member 10 to rotate. As the clamping member 10 rotates, it generates a twist in the elastic hoop 11, which in turn rotates the synchronizing member 3. The synchronizing member 3 then rotates, synchronously rotating the clamping member 10 and synchronously opening the clamping member 10 and adjusting the roller 6 to the appropriate position. The pencil is then inserted into the pen feed mechanism by the roller 6. When the pencil is ejected from the pen feed mechanism, the pencil no longer presses the roller 6, and the protruding post 503 returns to its initial position due to the clamping force of the clamping member 10. At this time, the synchronizing member 3 synchronizes the clamping member 10 to close.

[0066] The present application further discloses a pen sharpener including a housing, in which the pen feed mechanism and the pen sharpening mechanism of the above-mentioned structure are provided, the pen feed mechanism being provided above the pen sharpening mechanism. The pen sharpener includes a hob and a hob frame, and the hob frame is transmission-connected to the connecting teeth of the drive member of the pen feed mechanism.

[0067] This application is not limited to the above-mentioned best embodiment, and anyone can obtain various other forms of products under the suggestion of this application, but any changes in shape or structure thereof, as long as they are the same or similar technical solutions as those of this application, are within the protection scope of this application. [Explanation of symbols]

[0068] 1, holder; 101, first support wall; 102, second support wall; 103, third support wall; 104, recessed groove; 105, first concave groove; 106, sliding groove; 107, regulating ring; 108, storage chamber; 2, upper cover; 201, first pen insertion hole; 202, matching hole; 203, column; 204, positioning column; 3, synchronization member; 301, fourth pen insertion hole; 302, sliding rail; 303, insertion hole; 304, rotating rail hole; 4, triangular pen clamping area; 5, rotating shaft; 501, regulating plane; 502, spherical head; 503, convex column; 6, roller; 7, gear; 701, bushing; 8, regulating sheet; 9, connecting sleeve; 901 , embedded ring; 10, clamping member; 1001, arc surface; 11, elastic hoop; 1101, insertion needle; 1102, ring; 12, base; 1201, partition plate; 1202, first chamber; 1203, second chamber; 1204, connection hole; 13, driving member; 1301, convex ring; 1302, connection tooth; 1303, second concave groove; 14, toothed disc; 1401, flange; 1402, ring gear; 1403, second pen insertion hole; 1404, elastic engagement portion; 1405, moving tooth; 15, first driving gear; 1501, gear portion; 1502, regulating step; 1503, connection portion; 1504, elastic sheet; 16, second driving gear.

Claims

1. A pen feed mechanism comprising: a drive device and a pen clamp device, the drive device being connected to the pen clamp device and capable of operating and driving the pen clamp device; the pen clamp device including a holder (1), the holder (1) being provided with three pen clamp roller assemblies, and a triangular pen clamp area (4) being formed between the three pen clamp roller assemblies into which a pencil can be inserted; a clamp assembly provided between the movable end of the pen clamp roller assembly and the holder, the clamp assembly including a clamp member (10) movably connected to the holder and abutting the movable end of the pen clamp roller assembly, and an elastic return member supported between the clamp member (10) and the holder.

2. The pen feed mechanism of claim 1, wherein the restoring elastic member is an elastic hoop (11), the elastic hoop (11) covers the outside of the other ends of the three clamp members (10), a synchronization member (3) is rotatably connected to the holder (1), one end of the elastic hoop (11) is connected to the holder (1) and the other end of the elastic hoop (11) is connected to the synchronization member (3), and when the elastic hoop (11) is pressed by the clamp members (10) and twisted, it can rotate the synchronization member (3).

3. The pen feed mechanism of claim 2, wherein the synchronization member (3) is provided above the clamp member (10), a sliding rail is provided on the synchronization member (3) at a position corresponding to the clamp member (10), the lower end of the clamp member (10) is hingedly connected to the holder (1), and the upper end of the clamp member (10) is slidably combined within the sliding rail (302), and the synchronization member (3) can rotate to rotate the clamp member (10), and at the same time, the upper end of the clamp member (10) slides along the sliding rail.

4. 4. The pen feed mechanism according to claim 3, wherein the sliding direction of the slide rail (302) intersects with the swinging direction of the clamp member (10).

5. The pen feed mechanism of claim 3, wherein the holder (1) includes a top cover (2), the top cover (2) is connected to a side of the holder (1) closer to the synchronization member (3), the synchronization member (3) is rotatably connected to an upper side of the top cover (2), the elastic hoop (11) is provided between the top cover (2) and the synchronization member (3), and one end of the elastic hoop (11) is connected to the top cover (2).

6. 6. The pen feed mechanism according to claim 5, wherein the top cover (2) has a first pen insertion hole (201) above the triangular pen clamp area (4), the orthogonal projection of the first pen insertion hole (201) covers a part of the roller (6) of the pen clamp roller assembly, the top cover (2) has a matching hole (202), and the other end of the clamp member passes through the matching hole and is combined into the sliding rail.

7. The pen feed mechanism of claim 6, wherein the upper cover (2) is provided with a plurality of positioning posts (204) on a side closer to the synchronization member (3), the synchronization member (3) is provided with pivot rail holes (304) that mate with the positioning posts (204), the ends of the positioning posts (204) are fitted into the pivot rail holes (304), and when the synchronization member (3) is pivoted by the elastic hoop (11), the positioning posts (204) and the pivot rail holes (304) slide relative to each other.

8. 8. The pen feed mechanism of claim 7, wherein a fourth pen insertion hole (301) is provided in the center of the synchronization member (3), the fourth pen insertion hole (301) is aligned with the first pen insertion hole (201), the synchronization member (3) is provided with an insertion hole (303), one end of the elastic hoop (11) is bent upward to form an insertion needle (1101), and the insertion needle (1101) is inserted into the insertion hole (303).

9. The pen feed mechanism of claim 7, characterized in that a column (203) is further provided on the side of the top cover (2) closer to the synchronization member (3), and a ring (1102) is provided at one end of the elastic hoop (11), the ring (1102) covering the outside of the column (203).

10. The pen feed mechanism of claim 5, wherein the holder (1) is provided with a first support wall (101) and a second support wall (102), the pen clamp roller assembly is provided between the first support wall (101) and the second support wall (102), the pen clamp roller assembly includes a rotating shaft (5), one end of the rotating shaft (5) is rotatably connected to the first support wall (101), the second support wall (102) is provided with a sliding groove (106), and the other end of the rotating shaft (5) is slidably combined within the sliding groove (106).

11. The pen feed mechanism of claim 10, characterized in that the second support wall (102) is provided with a storage chamber (108), the storage chamber (108) is connected to the sliding groove (106), the clamp member (10) is movably attached within the storage chamber (108), one side of the clamp member (10) abuts against the movable end of the rotating shaft (5), and the other end of the rotating shaft (5) can slide to push the clamp member (10) to move outward.

12. 12. The pen feed mechanism according to claim 11, wherein one end of the clamp member (10) is hingedly connected to a side wall of the storage chamber (108), one side of the central portion of the clamp member (10) abuts against the other end of the pivot shaft (5), and the other end of the clamp member (10) is connected to the elastic restoring member.

13. The pen feed mechanism according to claim 12, characterized in that one side of the central portion of the clamping member (10) is an arcuate surface (1001), and the arcuate surface (1001) abuts against the other end of the rotating shaft (5).

14. A pen feed mechanism as described in any one of claims 10 to 13, characterized in that the roller (6) of the pen clamp roller assembly is attached to the rotating shaft (5), a gear (7) is further attached to the rotating shaft (5), the gear (7) is connected to the driving device, the driving device rotates the gear (7), and the gear (7) can rotate the rotating shaft (5) and the roller (6) synchronously.

15. 15. The pen feed mechanism according to claim 14, wherein a third support wall (103) is provided in the holder (1) between the first support wall (101) and the second support wall (102), and the third support wall (103) is supported on the underside of a portion of the rotating shaft (5) between the gear (7) and the roller (6).

16. 16. The pen feed mechanism according to claim 15, wherein a first groove (105) is provided on the upper surface of the third support wall (103), and the pivot shaft (5) is embedded in the first groove (105).

17. 17. The pen feed mechanism of claim 16, wherein a bushing (701) is connected to one side of the gear (7), a shaft hole is provided in the center of the gear (7), the shaft hole is coaxial with and communicates with the through hole of the bushing (701), at least one regulating plane (501) is provided on the side wall of the rotating shaft (5), the shape of the shaft hole of the gear (7) and the shape of the through hole of the bushing (701) both match the cross section of the rotating shaft (5), the gear (7) and the bushing (701) cover the outside of the rotating shaft (5), one end of the bushing (701) abuts against the roller (6), and the bushing (701) is embedded in the first groove (105).

18. The pen feed mechanism according to claim 17, characterized in that an attachment hole is provided in the center of the roller (6), a connecting sleeve (9) is provided in the attachment hole, the shape of the through hole of the connecting sleeve (9) matches the shape of the cross section of the pivot shaft (5), and the connecting sleeve (9) is tightly fitted to the outside of the pivot shaft (5) and abuts against the outside of the bush (701).

19. The pen feed mechanism according to claim 17, characterized in that a regulating sheet (8) is provided on the rotating shaft (5) outside the gear (7), and the regulating sheet (8) is regulated to the outside of the gear (7).

20. 20. The pen feed mechanism according to claim 19, wherein the end of the pivot shaft (5) close to the gear (7) is provided with a spherical head (502), the side wall of the first support wall (101) is provided with a recess (104) that fits with the spherical head (502), and the spherical head (502) is pivotally connected within the recess (104).

21. The pen feed mechanism according to claim 20, characterized in that a protruding post (503) is provided at the end of the rotating shaft (5) close to the roller (6), the cross section of the protruding post (503) is circular, and the protruding post (503) is attached by rolling to the groove bottom of the sliding groove (106).

22. The pen feed mechanism according to claim 15, characterized in that a regulating ring (107) for inserting a pencil is provided in the center of the holder (1), the regulating ring (107) is connected to the second support wall (102) and the third support wall (103), the regulating ring (107) is hung directly above the triangular pen clamp area (4), and the orthogonal projection of the regulating ring (107) covers a part of the roller (6).

23. The pen feed mechanism of claim 14, characterized in that the drive device includes a base (12) in which a drive member (13), a transmission assembly and a toothed disc (14) are provided, the drive member (13) is used to connect to a drive source, the transmission assembly is connected between the drive member (13) and the toothed disc (14), the toothed disc (14) is provided with a plurality of moving teeth (1405), the drive member (13) can rotate the toothed disc (14) through the transmission assembly, and when the toothed disc (14) rotates, the moving teeth (1405) can rotate the gear (7) of the pen clamp roller assembly, thereby rotating the roller (6) of the pen clamp roller assembly.

24. The base (12) has a partition plate (1201) at its center, which divides the chamber of the base (12) into a first chamber (1202) and a second chamber (1203). The partition plate (1201) has a connecting hole (1204) at its center. The transmission assembly includes a first driving gear (15), the center of which is rotatably connected in the connecting hole (1204). One end of the first driving gear (15) has a gear portion (1501). The gear portion (1501) is connected to the first chamber (1202).

24. The pen feed mechanism of claim 23, wherein the first drive gear (15) projects into a first chamber (1202), the toothed disc (14) is housed in the first chamber (1202), the gear portion (1501) is connected to the toothed disc (14) in a transmission manner, the other end of the first drive gear (15) is provided with a connection portion (1503), the connection portion (1503) projects into the second chamber (1203), the drive member (13) is housed in the second chamber (1203), and the connection portion (1503) is connected to the drive member (13).

25. 25. The pen feed mechanism of claim 24, wherein the transmission assembly further includes a plurality of second drive gears (16), the second drive gears (16) are housed in the first chamber (1202) and are rotatably connected to the partition plate (1201), one side of the second drive gears (16) meshes with a gear portion (1501) of the first drive gear (15), the toothed disk (14) has a flange (1401) on an edge close to the second drive gear (16), a ring gear (1402) is provided on an inner wall of the flange (1401), the toothed disk (14) covers the outside of the second drive gear (16), and the other end of the second drive gear (16) meshes with the ring gear (1402).

26. 26. The pen feed mechanism of claim 25, wherein a second pen insertion hole is provided in the center of the toothed disk (14), an axial hole is provided in the center of the first drive gear (15), the axial hole and the second pen insertion hole are aligned, an elastic engagement portion (1404) is provided on the side of the toothed disk (14) closer to the first drive gear (15), a regulating step (1502) is provided in the axial hole, the elastic engagement portion (1404) is inserted into the axial hole and engaged with the regulating step (1502), and the toothed disk (14) and the first drive gear (15) are rotatable relative to each other.

27. 27. The pen feed mechanism of claim 26, wherein the driving member (13) has a lid-like structure, a third pen insertion hole (1403) is provided in the center of the driving member (13), the third pen insertion hole (1403) is aligned with the second pen insertion hole, a convex ring (1301) is provided in the center of the driving member (13) on a side closer to the connection portion (1503), the convex ring (1301) is embedded in an axial hole of the first driving gear (15), and connection teeth (1302) for connecting to a driving source are provided on the inner wall of the convex ring (1301).

28. The pen feed mechanism of claim 27, characterized in that a plurality of elastic sheets (1504) are provided on the outer peripheral wall of the connection portion (1503) of the first drive gear (15), the elastic sheets (1504) are housed between the convex ring (1301) and the side wall of the drive member (13), protrusions are provided on the ends of the elastic sheets (1504), a second groove (1303) that mates with the protrusions is provided on the inner side of the side wall of the drive member (13), and the protrusions are embedded in the second groove (1303).

29. 29. A pen sharpener including a housing, wherein the housing contains a pen feed mechanism and a pen sharpener mechanism according to any one of claims 1 to 28, the pen feed mechanism being provided above the pen sharpener mechanism, and the pen feed mechanism being connected to the pen sharpener mechanism.

Images