Tibetan lead pencil sharpener

Abstract

The application provides a Tibetan pencil sharpener, belonging to the technical field of Tibetan writing tools, which comprises a shell, a pencil sharpening hole is arranged on the front side of the shell, a cutter holder is rotatably connected in the shell, a cutter body is arranged on the cutter holder, a Tibetan pencil lead polishing assembly is connected in the shell, the Tibetan pencil lead polishing assembly is located behind the cutter holder, and a gear transmission assembly for driving the cutter holder and the Tibetan pencil lead polishing assembly is arranged in the shell. The Tibetan pencil lead polishing assembly can be arranged to polish the wear-resistant pencil lead into a flat shape for writing Tibetan, and the technical blank of no Tibetan pencil and Tibetan pencil sharpener is made up.

Description

Technical Field

[0001] This invention belongs to the technical field of Tibetan writing tools, specifically relating to a Tibetan pencil sharpener. Background Technology

[0002] In Tibetan culture, writing tools occupy an extremely important position and have made an indelible contribution to the inheritance of Tibetan culture. However, because Tibetan script is very different from Chinese characters, specific writing tools are needed to write Tibetan script.

[0003] 1. Bamboo pens, lacking an ink cartridge, require constant dipping in ink, leading to ink breaks, incomplete writing, and ink stains on hands. 2. While fountain pens address some of the problems of bamboo pens, they don't solve the issues of ink leakage, ink stains, and the inability to correct mistakes. Furthermore, due to the young age of users, primarily preschoolers and first to third graders, improper pressure control and incorrect pen grip result in over 90% of students in this age group getting significant ink stains on their hands, face, and clothing when using Tibetan fountain pens, which are difficult to clean. This poses a significant hygiene and health risk to children of this age. 3. The high altitude and atmospheric pressure cause fountain pens to leak ink and wear out quickly.

[0004] To address this issue, a new type of Tibetan script pencil was designed. This pencil includes a durable tungsten alloy lead and a wooden outer shell covering the lead. The lead needs to be flattened for use, but existing pencil sharpeners cannot achieve this flattening shape for writing Tibetan characters. Therefore, a specialized Tibetan script pencil sharpener is needed to achieve the same effect as other Tibetan writing tools, while also overcoming the shortcomings and limitations of the other two Tibetan writing tools. Summary of the Invention

[0005] The purpose of this invention is to provide a Tibetan pencil sharpener to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a Tibetan script pencil sharpener, comprising a housing, a sharpening hole on the front side of the housing, a blade holder rotatably connected inside the housing, a blade body on the blade holder, a Tibetan script pencil lead sharpening assembly connected inside the housing, the Tibetan script pencil lead sharpening assembly being located behind the blade holder, and a gear transmission assembly for driving the blade holder and the Tibetan script pencil lead sharpening assembly inside the housing;

[0007] The Tibetan pencil lead polishing assembly includes a base connected to the housing. The base is provided with a first drive shaft and a second drive shaft arranged longitudinally. A cylindrical grinding stone is fixedly connected to the lower end of both the first drive shaft and the second drive shaft. A gap is provided between the two cylindrical grinding stones. A first gear is fixedly connected to the upper end of the first drive shaft, and a second gear is fixedly connected to the upper end of the second drive shaft. The first gear and the second gear mesh.

[0008] The gear transmission assembly includes a gear assembly, a first driven gear, and a first bevel gear. The first driven gear is disposed on the conical cylinder and on the first transmission shaft. The first bevel gear meshes with a second bevel gear. The left end of the second bevel gear is connected to a third transmission shaft. A connecting seat is fixedly connected to the upper side of the base. The third transmission shaft is rotatably connected to the connecting seat. The left end of the third transmission shaft passes through the second driven gear and is rotatably connected to the housing. The first driven gear, the second driven gear, and the gear assembly mesh.

[0009] The base is slidably connected to the housing, the third transmission shaft is a telescopic shaft, a straight groove is opened on the rear side of the housing, the rear side of the base is threaded to one end of a threaded rod, and the other end of the threaded rod passes through the straight groove and is fixedly connected to a handle.

[0010] Furthermore, the knife holder includes a conical cylinder with openings at both ends. The front end of the conical cylinder is rotatably connected to the housing. An installation port is provided on the side wall of the conical cylinder. The knife body is located at the installation port and is slidably connected to the conical cylinder. An adjustment component for controlling the movement of the knife body is provided inside the housing to meet the needs of different Tibetan pencil leads.

[0011] The base is provided with a vertically arranged fourth transmission shaft. A third gear is fixedly connected to the upper end of the fourth transmission shaft. The third gear meshes with the second gear. A frustum grinding stone is fixedly connected to the lower end of the fourth transmission shaft. There is a gap between the frustum grinding stone and the cylindrical grinding stone.

[0012] Furthermore, a Tibetan pencil fixing device is provided on the front side of the housing, and the Tibetan pencil fixing device is connected to the housing through a guide assembly;

[0013] The guide assembly includes two guide rods. One end of the guide rod is fixedly connected to the Tibetan pencil fixing device, and the other end of the guide rod is inserted into the housing and fixedly connected to a limiting plate. The guide rod is slidably connected to the housing. A spring is provided between the front side of the limiting plate and the housing, and the spring is sleeved on the guide rod.

[0014] Furthermore, a calibration component is provided between the blade holder and the Tibetan pencil lead grinding assembly. A calibration groove is provided on the lower side of the calibration component, and a fixed base is fixedly connected to the upper side of the calibration component. A spring rod is fixedly connected to the upper side of the fixed base. The upper end of the spring rod is fixedly connected to the housing, and a connecting sleeve is rotatably connected to the lower end of the spring rod. The side wall of the connecting sleeve is fixedly connected to one end of the control rod. A limit groove is provided in the housing, and the other end of the control rod passes through the limit groove and is located outside the housing.

[0015] Furthermore, the Tibetan pencil fixing device includes a base plate, an annular fixing shell rotatably connected to the front side of the base plate, an insertion port on the base plate, a plurality of fixing shafts fixedly connected to the front side of the base plate, fixing claws rotatably connected to the fixing shafts, a spring plate on one side of the fixing claw, one end of the spring plate being fixedly connected to the base plate, a transmission rod fixedly connected to one end of the fixing claw located inside the annular fixing shell, and a plurality of transmission columns corresponding to the transmission rod being fixedly connected to the inner side of the annular fixing shell.

[0016] Furthermore, the adjustment assembly includes a threaded sleeve, which is fixedly connected to the housing. The threaded sleeve is threadedly connected to a threaded cylinder, and an adjustment ring is fixedly connected to one end of the threaded cylinder. An annular groove is provided on the inner side of the adjustment ring. A transmission arm is fixedly connected to the outer side of the blade body, and one end of the transmission arm is located in the annular groove. An adjustment port is opened on the right side of the housing, and one side of the adjustment ring is located outside the adjustment port.

[0017] The advantages of this invention are:

[0018] 1. The Tibetan pencil sharpener provided by this invention can sharpen the wear-resistant pencil lead into a flat shape that is easy to write Tibetan characters by setting a Tibetan pencil lead grinding component, thus filling the technological gap of not having Tibetan pencils and Tibetan pencil sharpeners.

[0019] 2. The Tibetan pencil sharpener provided by this invention allows for adjustment of the blade's position via a specially designed adjustment component. This adjustment can be tailored to the thickness of the pencil lead, making it highly versatile.

[0020] 3. The Tibetan pencil sharpener provided by this invention can calibrate the position of the pencil tip during the second sharpening of the Tibetan pencil through the set calibration component, so that the flat pencil tip corresponds to the position of the Tibetan pencil lead sharpening component, which facilitates subsequent sharpening.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2This is a first-person view of the internal structure of the shell.

[0024] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the tool holder structure.

[0026] Figure 5 This is a structural diagram of the tool holder and adjustment components.

[0027] Figure 6 This is a structural schematic diagram from a second perspective inside the shell.

[0028] Figure 7 This is a schematic diagram of the gear assembly.

[0029] Figure 8 This is a schematic diagram of the third drive shaft.

[0030] Figure 9 This is a schematic diagram of the pen tip calibration structure.

[0031] Figure 10 This is a schematic diagram of the Tibetan pencil fixing device.

[0032] Figure 11 This is a schematic diagram showing the position of the cutter body in the conical cylinder.

[0033] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Tool holder; 201. Conical cylinder; 202. Mounting port; 3. Tool body; 4. Tibetan pencil lead grinding assembly; 401. Base; 402. First drive shaft; 403. Second drive shaft; 404. Cylindrical grinding stone; 405. First gear; 406. Second gear; 5. Gear transmission assembly; 501. Gear assembly; 5011. First drive gear; 5012. Second drive gear; 5013. Third drive gear; 5014. Fourth drive gear; 5015. Fifth drive gear; 5016. Sixth drive gear; 5017. Connecting shaft; 5018. Hand crank; 502. First driven gear; 503. First bevel gear; 504. Second bevel gear; 505. Third drive shaft; 506. Connecting seat; 50 7. Second driven gear; 6. Adjusting assembly; 601. Threaded sleeve; 602. Threaded cylinder; 603. Adjusting ring; 604. Annular groove; 605. Transmission arm; 606. Ball bearing; 7. Tibetan pencil fixing device; 701. Base plate; 702. Annular fixing shell; 703. Fixing shaft; 704. Fixing claw; 705. Spring plate; 706. Transmission rod; 707. Transmission column; 8. Guide assembly; 81. Guide rod; 82. Limiting plate; 83. Spring; 9. Straight groove; 10. Threaded rod; 11. Handle; 12. Fourth transmission shaft; 13. Third gear; 14. Frustum grinding stone; 15. Calibration piece; 16. Calibration groove; 17. Fixing seat; 18. Elastic rod; 19. Connecting sleeve; 20. Control rod; 21. Limiting groove; 22. Pointer; 23. Gear line. Detailed Implementation

[0034] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "aligned", "overlapping", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] Example 1

[0039] This embodiment provides a method such as Figures 1-3 The Tibetan pencil sharpener shown includes a housing 1, a collection box inserted into the lower rear of the housing 1, a sharpening hole on the front of the housing 1, a blade holder 2 rotatably connected inside the housing 1, a blade body 3 on the blade holder 2, the blade body 3 being used to remove the outer wooden outer layer of the Tibetan pencil, a Tibetan pencil lead polishing assembly 4 connected inside the housing 1, the Tibetan pencil lead polishing assembly 4 being located behind the blade holder 2, and a gear transmission assembly 5 inside the housing 1 for driving the blade holder 2 and the Tibetan pencil lead polishing assembly 4.

[0040] Furthermore, such as Figures 2-4 As shown, the tool holder 2 includes a conical cylinder 201, with openings at both ends. The front end of the conical cylinder 201 is rotatably connected to the housing 1. An installation port 202 is provided on the side wall of the conical cylinder 201, and the tool body 3 is located at the installation port 202. Figure 11 As shown, the blade of the blade body 3 is located on the virtual surface of the conical surface inside the conical cylinder 201. As the conical cylinder 201 rotates, the blade of the blade body 3 can remove the wooden outer layer of the Tibetan pencil as it is continuously inserted. The blade body 3 is slidably connected to the conical cylinder 201, and its sliding direction is the same as the taper direction of the conical cylinder 201. An adjustment component 6 for controlling the movement of the blade body 3 is provided inside the housing 1. By adjusting the position of the blade body 3, the pencil sharpener can be adapted to use Tibetan pencils with different lead thicknesses. The above structure can also be replaced by an equivalent structure using a conventional pencil sharpener.

[0041] Furthermore, such as Figure 2 and Figure 5As shown, the adjustment assembly 6 includes a threaded sleeve 601, which is fixedly connected to the housing 1. A threaded cylinder 602 is threadedly connected to the threaded sleeve 601, and an adjustment ring 603 is fixedly connected to one end of the threaded cylinder 602. An annular groove 604 is provided on the inner side of the adjustment ring 603. A transmission arm 605 is fixedly connected to the outer side of the blade 3, with one end of the transmission arm 605 located within the annular groove 604. An adjustment port is provided on the right side of the housing 1, and one side of the adjustment ring 603 is located outside the adjustment port. When adjusting the position of the blade 3, rotating the adjustment ring 603 causes it to shift laterally under the action of the threaded cylinder 602. As the adjustment ring 603 rotates, it can drive the blade 3 to move via the transmission arm 605, thus changing the position of the blade 3. Different positions of the blade 3 correspond to different thicknesses of the pen lead, allowing the position of the blade 3 to be adjusted according to actual needs.

[0042] Furthermore, such as Figure 4 and Figure 5 As shown, the transmission arm 605 is equipped with freely rolling balls 606 on both the front and rear sides. The two balls 606 are fitted into the annular groove 604. When the conical cylinder 201 rotates, the transmission arm 605 moves in the annular groove 604. The balls 606 can reduce the friction between the transmission arm 605 and the annular groove 604, ensuring smooth operation.

[0043] Furthermore, the outer side of the adjusting ring 603 is provided with an indicator line, and the housing 1 is provided with a scale at the adjusting port. The position of the blade body 3 can be precisely adjusted by cooperating with the scale and the indicator line.

[0044] Furthermore, such as Figure 2 , Figure 3 and Figure 6 As shown, the Tibetan script pencil lead polishing assembly 4 includes a base 401 connected to the housing 1. The base 401 is provided with a longitudinally arranged first drive shaft 402 and a second drive shaft 403. Specifically, the first drive shaft 402 and the second drive shaft 403 pass through the base and can rotate around their own axes on the base. A cylindrical grinding stone 404 is fixedly connected to the lower end of each of the first drive shaft 402 and the second drive shaft 403, with a gap between them. A first gear 405 is fixedly connected to the upper end of the first drive shaft 402, and a second gear 406 is fixedly connected to the upper end of the second drive shaft 402. The first gear 405 and the second gear 406 mesh. Specifically, the gap between the two cylindrical grinding stones 404 is smaller than the diameter of the pencil lead, allowing the Tibetan script pencil lead to extend into the lead. When the two cylindrical grinding stones 404 rotate, they can polish both sides of the pencil tip, flattening the tip.

[0045] Furthermore, such as Figure 2 and Figure 3As shown, the gear transmission assembly 5 includes a gear assembly 501, a first driven gear 502, and a first bevel gear 503. The first driven gear 502 is disposed on the conical cylinder 201. Specifically, the first driven gear 502 is integrally disposed with the conical cylinder 201 and is located at the front end of the conical cylinder 201. The first bevel gear 503 is disposed on the first transmission shaft 402. Specifically, the first bevel gear 503 is sleeved and fixed to the side wall of the upper part of the first transmission shaft 402. The first bevel gear 503 meshes with a second bevel gear 504. The left end of the second bevel gear 504 is connected to a third transmission shaft 505. A connecting seat 506 is fixedly connected to the upper side of the base 401. The third transmission shaft 505 is rotatably connected to the connecting seat 506. The left end of the third transmission shaft 505 is rotatably connected to the housing 1. The left end of the third transmission shaft 505 is fixedly connected to a second driven gear 507. The first driven gear 502, the second driven gear 507, and the gear assembly 501 mesh.

[0046] like Figure 3 and Figure 7 As shown, the gear assembly 501 includes a first transmission gear 5011, a second transmission gear 5012, a third transmission gear 5013, a fourth transmission gear 5014, a fifth transmission gear 5015, and a sixth transmission gear 5016 rotatably connected to the housing 1. Adjacent transmission gears are meshed together. Specifically, the first transmission gear 5011, the fourth, fifth, and sixth transmission gears are all spur gears, while the second transmission gear 5012 and the third transmission gear 5013 are compound gears, comprising both spur gears and bevel gears, which are integrally formed. The first transmission gear 5011 and the second transmission gear 5016 are meshed together. The spur teeth of the driving gear 5012 mesh with the bevel teeth of the second transmission gear 5012 and the third transmission gear 5013. The spur teeth of the third transmission gear 5013 mesh with the spur teeth of the fourth gear 5014. The first driven gear 502 meshes with the first transmission gear 5011. The second driven gear 507 meshes with the sixth transmission gear 1. One end of the third transmission gear 5013 is fixedly connected to a connecting shaft 5017. One end of the connecting shaft 5017 passes through the housing 1 and is connected to a hand crank 5018. The connecting shaft 5012 is rotatably connected to the housing 1. The hand crank 5018 can also be mounted on other transmission gears. When the hand crank 5018 rotates, it can drive the transmission gear 5011 to rotate. The transmission gear 5011 can drive the conical cylinder 201 and the first transmission shaft 402 to rotate through various components, thereby controlling the blade 3 to remove the wooden outer layer of the Tibetan pencil. At the same time, it controls the rotation of the two cylindrical grinding stones 404 to polish the tip of the Tibetan pencil. The aforementioned hand crank 5013 can also be replaced by a motor, using a motor to drive the pencil sharpener instead of manually.

[0047] Furthermore, such as Figure 2 and Figure 3As shown, a Tibetan pencil fixing device 7 is provided on the front side of the housing 1, and the Tibetan pencil fixing device 7 is connected to the housing 1 through a guide component 8.

[0048] The guide assembly 8 includes two guide rods 81. One end of each guide rod 81 is fixedly connected to the Tibetan pencil fixing device 7, and the other end of each guide rod 81 is inserted into the housing 1 and fixedly connected to a limiting plate 82. The guide rod 81 is slidably connected to the housing 1. A spring 83 is provided between the front side of the limiting plate 82 and the housing 1, and the spring 83 is sleeved on the guide rod 81. When not in use, the guide rod 81 is partially retracted into the housing 1. When in use, the guide rod 81 is pulled outward. During the pulling, the spring 83 gradually contracts, providing a restoring force to the guide rod 81, thereby providing an inward pushing force to the Tibetan pencil. During the sharpening process, the Tibetan pencil automatically advances into the housing 1.

[0049] Furthermore, such as Figure 1 , Figure 3 and Figure 6 As shown, the base 401 is slidably connected to the housing 1, and the third transmission shaft 505 is a telescopic shaft. Both ends of the telescopic shaft can move radially, but the two ends will not rotate relative to each other. Its structure is as follows: Figure 8 As shown, a straight groove 9 is provided on the rear side of the housing 1. Specifically, the length direction of the straight groove 9 is the same as the sliding direction of the base 401. The rear side of the base 401 is threaded to one end of the threaded rod 10. The other end of the threaded rod 10 passes through the straight groove 9 and is fixedly connected to a handle 11. By tightening the handle 11, the position of the base 401 can be fixed. When it is in the tightened state, under the force of the threaded rod 10, the handle 11 and the base 401 clamp the housing 1, thereby fixing the position of the base 401.

[0050] Furthermore, such as Figure 3 and Figure 6 As shown, the base 401 is provided with a vertically arranged fourth drive shaft 12. Specifically, the fourth drive shaft 12 passes through the base and can rotate around its own axis on the base 401. A third gear 13 is fixedly connected to the upper end of the fourth drive shaft 12, and the third gear 13 meshes with the second gear 406. A frustum grinding stone 14 is fixedly connected to the lower end of the fourth drive shaft 12. When the frustum grinding stone 14 is directly behind the conical cylinder 201, the frustum grinding stone 14 can sharpen the tip of the Tibetan pencil to a certain angle, making it easier for the user to write. There is a gap between the frustum grinding stone 14 and the cylindrical grinding stone 404. When this gap is directly behind the conical cylinder 201, the pencil sharpener will not sharpen the pencil lead. The user can adjust the position of the base 401 according to the usage needs.

[0051] Furthermore, such as Figure 1As shown, a pointer 22 is fixedly connected to the rear side of the base 401, and a long slot through which the pointer 22 passes is opened on the rear side of the housing 1. A stop line 23 is provided on the upper side of the long slot. The combination of the pointer 22 and the stop line 23 makes it easy to confirm the stop of the pencil sharpener, namely the flat tip stop, the tilted tip stop, and the normal stop.

[0052] Furthermore, such as Figure 2 , Figure 3 and Figure 9 As shown, a calibration component 15 is provided between the tool holder 2 and the Tibetan pencil lead grinding assembly 4. A calibration groove 16 is provided on the lower side of the calibration component 15. A fixed base 17 is fixedly connected to the upper side of the calibration component 15. A spring rod 18 is fixedly connected to the upper side of the fixed base 17. The upper end of the spring rod 18 is fixedly connected to the housing 1. The spring rod 18 provides a downward elastic force to the calibration component 15, and the upper and lower ends of the spring rod 18 will not rotate relative to each other. A connecting sleeve 19 is rotatably connected to the lower end of the spring rod 18. The side wall of the connecting sleeve 19 is fixedly connected to one end of the control rod 20. A limit groove 21 is provided in the housing 1, and the other end of the control rod 20 passes through the limit groove. The groove 21 is located on the outside of the housing 1. Specifically, the limiting groove 21 is an inverted L-shape. When calibrating the pen tip, the control rod 20 is located at the bottom of the limiting groove 21. When in use, an inward pushing force is applied to the Tibetan pencil. When the pen tip is in contact with the calibration piece 15, the Tibetan pencil is rotated. When the position of the Tibetan pencil tip corresponds to that of the calibration groove 16, the pen tip will be inserted into the calibration groove 16 under the action of the pushing force. At this time, the calibration is completed. After the calibration is completed, the control rod 20 is pulled upward. The calibration piece 15 moves upward with the control rod 20. When the control rod 20 moves to the lateral position of the limiting groove 21, the pen tip can be polished a second time.

[0053] Furthermore, the elastic rod 18 includes a fixed cylinder, with a movable rod inserted into the upper end of the fixed cylinder. The lower end of the movable rod can move up and down inside the fixed cylinder, and the movable rod and the fixed cylinder will not rotate relative to each other. A spring is provided between the lower end of the movable rod and the fixed cylinder, and the spring provides elastic restoring force.

[0054] Furthermore, such as Figure 10As shown, the Tibetan pencil fixing device 7 includes a base plate 701. An annular fixing shell 702 is rotatably connected to the front side of the base plate 701. The base plate 701 has an insertion port. Several fixing shafts 703 are fixedly connected to the front side of the base plate 701. Specifically, there are three fixing shafts 703, and the three fixing shafts 703 are arranged in a circular array. Fixing claws 704 are rotatably connected to the fixing shafts 703. A spring plate 705 is provided on one side of the fixing claw 704. One end of the spring plate 705 is fixedly connected to the base plate 701. The spring plate 705 can provide elastic clamping force for the fixing claw 704. In normal operation, the three fixing claws 704 are in a closed state. A transmission rod 706 is fixedly connected to one end of each fixing claw 704 within the annular fixing shell 702. Several transmission pins 707, corresponding to the transmission rod 706, are fixedly connected to the inner side of the annular fixing shell 702. When the annular fixing shell 702 is rotated, the transmission pins 707 can drive the transmission rod 706 to move, causing the three fixing claws 704 to open. Once open, the fixing claws 704 can fix the Tibetan pencil. Under the clamping force of the three fixing claws 704, the Tibetan pencil itself will not rotate during sharpening. This Tibetan pencil fixing device 7 can also be replaced by an existing pencil sharpener fixing structure, as long as it ensures that the Tibetan pencil itself does not rotate during sharpening.

[0055] In summary, the Tibetan pencil sharpener provided by this invention can sharpen the wear-resistant pencil lead to a flat shape suitable for writing Tibetan characters through the Tibetan pencil lead sharpening component 4, thus overcoming the shortcomings of the prior art. Moreover, the position of the blade body 3 can be adjusted through the adjustment component 6, which can be adjusted according to the thickness of the pencil lead. At the same time, the sharpening speed can be adjusted according to the needs, making it highly versatile.

[0056] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A Tibetan pencil sharpener, comprising a housing (1), wherein a sharpening hole is provided on the front side of the housing (1), and a blade holder (2) is rotatably connected inside the housing (1), wherein a blade body (3) is provided on the blade holder (2), characterized in that: The housing (1) is connected to a Tibetan pencil lead grinding assembly (4), which is located behind the tool holder (2). The tool holder (2) includes a conical cylinder (201), and the housing (1) is provided with a gear transmission assembly (5) for driving the tool holder (2) and the Tibetan pencil lead grinding assembly (4). The Tibetan pencil lead polishing assembly (4) includes a base (401) connected to the housing (1). The base (401) is provided with a first drive shaft (402) and a second drive shaft (403) arranged longitudinally. A cylindrical grinding stone (404) is fixedly connected to the lower end of both the first drive shaft (402) and the second drive shaft (403). A gap is provided between the two cylindrical grinding stones (404). A first gear (405) is fixedly connected to the upper end of the first drive shaft (402), and a second gear (406) is fixedly connected to the upper end of the second drive shaft. The first gear (405) and the second gear (406) mesh. The gear transmission assembly (5) includes a gear assembly (501), a first driven gear (502), and a first bevel gear (503). The first driven gear (502) is disposed on the conical cylinder (201), and the first bevel gear (503) is disposed on the first transmission shaft (402). The first bevel gear (503) meshes with a second bevel gear (504). The left end of the second bevel gear (504) is connected to a third transmission shaft (505). A connecting seat (506) is fixedly connected to the upper side of the base (401). The third transmission shaft (505) is rotatably connected to the connecting seat (506). The left end of the third transmission shaft (505) passes through the second driven gear (507) and is rotatably connected to the housing (1). The first driven gear (502), the second driven gear (507), and the gear assembly (501) mesh. The base (401) is slidably connected to the housing (1), the third transmission shaft (505) is a telescopic shaft, the housing (1) has a straight slot (9) on the rear side, the base (401) is threaded to one end of a threaded rod (10) on the rear side, and the other end of the threaded rod (10) passes through the straight slot (9) and is fixedly connected to a handle (11); The base (401) is provided with a longitudinally arranged fourth transmission shaft (12). A third gear (13) is fixedly connected to the upper end of the fourth transmission shaft (12). The third gear (13) meshes with the second gear (406). A frustum grinding stone (14) is fixedly connected to the lower end of the fourth transmission shaft (12). There is a gap between the frustum grinding stone (14) and the cylindrical grinding stone (404).

2. A Tibetan pencil sharpener as described in claim 1, characterized in that: The conical cylinder (201) is open at both ends. The front end of the conical cylinder (201) is rotatably connected to the housing (1). The side wall of the conical cylinder (201) is provided with an installation port (202). The blade (3) is located in the installation port (202) and is slidably connected to the conical cylinder (201). The housing (1) is provided with an adjustment component (6) for controlling the movement of the blade (3).

3. A Tibetan pencil sharpener as described in claim 1, characterized in that: The front side of the housing (1) is provided with a Tibetan pencil fixing device (7), and the Tibetan pencil fixing device (7) is connected to the housing (1) through a guide component (8); The guide assembly (8) includes two guide rods (81). One end of the guide rod (81) is fixedly connected to the Tibetan pencil fixing device (7), and the other end of the guide rod (81) is inserted into the housing (1) and fixedly connected to a limiting plate (82). The guide rod (81) is slidably connected to the housing (1). A spring (83) is provided between the front side of the limiting plate (82) and the housing (1), and the spring (83) is sleeved on the guide rod (81).

4. A Tibetan pencil sharpener as described in claim 1, characterized in that: A calibration component (15) is provided between the knife holder (2) and the Tibetan pencil lead grinding assembly (4). A calibration groove (16) is provided on the lower side of the calibration component (15). A fixed seat (17) is fixedly connected to the upper side of the calibration component (15). A spring rod (18) is fixedly connected to the upper side of the fixed seat (17). The upper end of the spring rod (18) is fixedly connected to the housing (1). A connecting sleeve (19) is rotatably connected to the lower end of the spring rod (18). The side wall of the connecting sleeve (19) is fixedly connected to one end of the control rod (20). A limit groove (21) is provided on the housing (1). The other end of the control rod (20) passes through the limit groove (21) and is located outside the housing (1).

5. A Tibetan pencil sharpener as described in claim 3, characterized in that: The Tibetan pencil fixing device (7) includes a base plate (701), an annular fixing shell (702) is rotatably connected to the front side of the base plate (701), the base plate (701) has an insertion port, a plurality of fixing shafts (703) are fixedly connected to the front side of the base plate (701), a fixing claw (704) is rotatably connected to the fixing shaft (703), a spring plate (705) is provided on one side of the fixing claw (704), one end of the spring plate (705) is fixedly connected to the base plate (701), a transmission rod (706) is fixedly connected to one end of the fixing claw (704) located inside the annular fixing shell (702), and a plurality of transmission columns (707) corresponding to the transmission rod (706) are fixedly connected to the inner side of the annular fixing shell (702).

6. A Tibetan pencil sharpener as described in claim 2, characterized in that: The adjustment assembly (6) includes a threaded sleeve (601), which is fixedly connected to the housing (1). The threaded sleeve (601) is threadedly connected to a threaded cylinder (602). One end of the threaded cylinder (602) is fixedly connected to an adjustment ring (603). An annular groove (604) is provided on the inner side of the adjustment ring (603). A transmission arm (605) is fixedly connected to the outer side of the blade body (3). One end of the transmission arm (605) is located in the annular groove (604). An adjustment port is opened on the right side of the housing (1), and one side of the adjustment ring (603) is located outside the adjustment port.

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