A sharpener

Abstract

The utility model discloses a kind of whetting equipment technical field, for the working blade of whetting and scraping device neck one end, including whetstone and fixed base, wherein whetstone includes working surface.Fixed base includes guide slot and limit hole, limit hole and limit hole intercommunication.Neck moves along guide slot, make working blade and working surface friction contact.Under the restriction of guide slot, working blade can only move along the length direction of guide slot along with neck, thereby fixed the friction path of working blade, reduce the freedom of scraping device relative whetting device, to keep working blade always whetting to same area.The whetstone is embedded in limit hole, so that the angle α of working surface and working blade is greater than or equal to less than 60 °, and the α is less than 80 °.Both can ensure that working blade is whetted to certain sharpness, and also can prevent excessive wear and tear to cause working blade intensity to reduce.

Description

Technical Field

[0001] This utility model belongs to the technical field of sharpening equipment, and specifically relates to a sharpening device. Background Technology

[0002] A periodontal scaling and root planer (SPD) is a specialized instrument used by dentists to treat periodontal disease. It is generally used for deep cleaning of periodontal tissues, scraping away tartar, plaque, and other diseased tissues located below the gum line. SPDs typically consist of a working blade, which gradually wears down and becomes dull with repeated use, leading to a decrease in cleaning efficiency. To keep the working blade sharp, it needs to be sharpened regularly.

[0003] Traditional abrasion requires the physician to hold the scraper in one hand and the whetstone in the other, accurately controlling the grip, identifying the working blade shape, and maintaining the ideal angle between the blade and the whetstone throughout the abrasion process. This technique relies heavily on the physician's experience and skill; experienced doctors can perform abrasions precisely, while novice physicians typically need extensive practice to master the skills. Utility Model Content

[0004] The purpose of this invention is to disclose a sharpening tool that can improve the efficiency of the working blade of a sharpening scraper.

[0005] To achieve the above objectives, this utility model discloses a sharpening tool for sharpening the working blade on the neck of a scraper, comprising: Whetstone, including the working surface; and The fixed base is provided with a guide groove and a limiting hole. The guide groove and the limiting hole extend along a preset direction and are interconnected. The guide groove is used for inserting the neck, and the limiting hole is used for placing the grinding stone. The angle α formed by the working surface and the preset plane of the working blade satisfies: 60°≤α≤80°. The neck can move along the preset direction so that the working blade rubs on the working surface along the preset direction.

[0006] As an optional implementation, the angle α formed by the working surface and the preset plane of the working blade is 70°.

[0007] As an optional implementation, the guide groove has slopes on both sides, and the slopes extend along the preset direction, so that the upper part of the cross-sectional shape of the guide groove is V-shaped.

[0008] As an optional implementation, the radius of curvature of the cross-section of the working blade is R1, and the outer wall of the fixing seat is provided with at least one rounded corner edge, the radius of curvature of the cross-section of the rounded corner edge is R2, and R2 is less than or equal to R1.

[0009] As an optional implementation, the guide groove has a matching mark on the side near the grinding stone.

[0010] As an optional implementation, the sharpener has an end face, the guide groove penetrates the end face to form a first opening on the end face; and / or the limiting hole penetrates the end face to form a second opening on the end face.

[0011] As an optional implementation, it also includes a blocking part located in the extending direction of the limiting hole.

[0012] As an optional implementation, the sharpening tool has a first boss and a second boss, the first boss and the second boss being spaced apart to form the guide groove, and at least part of the limiting hole being located on the second boss; the length of the first boss in the preset direction is greater than the length of the second boss in the preset direction, so that at least a part of the grinding stone is exposed in the space where the fixing seat is located.

[0013] As an optional implementation, the fixing base is further provided with the air gap hole, which extends along the preset direction and communicates with the limiting hole.

[0014] As an optional implementation, the outer surface of the fixing base is provided with anti-slip texture.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The guide groove and the limiting hole both extend along a preset direction and are interconnected. The guide groove is used for the neck to be inserted and the limiting hole is used to place the grinding stone. Under the restriction of the guide groove, the working blade can only move along the preset direction with the neck, thereby fixing the friction path of the working blade and reducing the degree of freedom of the scraper relative to the sharpener, so as to keep the same area of ​​the working blade being sharpened at all times.

[0016] (2) The angle α formed by the working surface and the preset plane of the working blade satisfies 60°≤α≤80°. This limits the relative angle between the working surface and the preset plane to the range of 60°-80°, which can ensure that the working blade is sharpened to a certain degree of sharpness, and can also prevent excessive wear that would reduce the strength of the working blade, thus maintaining the original blade design.

[0017] (3) The limiting hole is used to place the whetstone; the whetstone and the fixed base are assembled into a sharpener, which simplifies the structure of the sharpener and makes it easy to use. Operators do not need to have superb skills or experience, but can easily achieve a standardized and regulated sharpening process with this sharpener, reducing the difficulty of operation and improving the efficiency of operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the use of this utility model; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is an overall structural diagram of the present invention; Figure 4 This is an exploded view of this utility model; Figure 5 This is a cross-sectional schematic diagram of the fixing base of this utility model; Figure 6 This is an overall structural diagram of the second embodiment of the present utility model; Figure 7 This is an overall structural diagram of the third embodiment of this utility model.

[0020] Explanation of key figure labels: 1. Fixed base; 11. Guide groove; 111. Sloping surface; 112. First opening; 113. Top surface; 12. Limiting hole; 121. Air gap hole; 122. Second opening; 13. Matching mark; 14. Rounded corner edge; 15. End face; 16. Anti-slip texture; 17. Blocking part; 171. Through port; 18. First boss; 19. Second boss; D1. Preset direction; 2. Grinding stone; 21. Working surface; 3. Scraper; 31. Neck; 311. Indicator mark; 32. Working blade; 321. Preset plane. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship of the markings based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the devices, elements, or components indicated by the markings to include a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0025] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0026] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0027] Please see Figures 1 to 3 As shown, the first embodiment of this application provides a sharpening tool for sharpening the working blade 32 at one end of the neck 31 of a scraper 3. The sharpening tool includes a whetstone 2 and a fixing base 1. The whetstone 2 is used to sharpen the working blade 32, and the fixing base 1 is used to fix the position of the working blade 32 relative to the whetstone 2.

[0028] The grinding stone 2 includes a working surface 21, and the fixed base 1 includes a guide groove 11 and a limiting hole 12. Both the guide groove 11 and the limiting hole 12 extend along a preset direction D1 and are interconnected. The guide groove 11 penetrates the top surface 113 of the fixed base 1, allowing the end of the neck 31 with the working blade 32 to be directly inserted into the guide groove 11 from the top of the fixed base 1, and causing the working blade 32 to make frictional contact with the working surface 21. Under the constraint of the guide groove 11, the working blade 32 can move along the preset direction D1 with the neck 31, thereby fixing the friction path of the working blade 32, reducing the degree of freedom of the scraper 3 relative to the sharpener, so as to keep the grinding stone 2 always sharpening the same area of ​​the working blade 32.

[0029] The grinding stone 2 is embedded in the limiting hole 12, ensuring that the angle α formed by the working surface 21 and the preset plane 321 of the working blade 32 satisfies 60°≤α≤80°. The limiting hole 12 restricts the relative angle between the working surface 21 and the preset plane 321 to specific angle values ​​such as 60°, 62°, 63°, 65°, 67°, 70°, 72°, 74°, 75°, 78°, and 80°. This prevents excessive deviation or wobbling during the sharpening process, ensuring that the working blade 32 is sharpened to a certain degree while preventing excessive wear that could reduce its strength.

[0030] In some embodiments, the angle α between the working surface 21 and the working blade 32 is equal to 70°. The included angle between the working surface 21 and the working blade 32 is the optimal angle for sharpening the working blade 32. This is a relatively sharp and structurally stable grinding angle, which is very suitable for sharpening the working blade 32 of the scraper 3. The 70° angle is more conducive to grinding the working blade 32 to a sharp edge, forming a sharper cutting edge, so that the scraper 3 maintains good cutting and scraping performance, thereby improving the scraping efficiency of the scraper 3; and it is less likely to cause the adverse effect of reduced structural strength due to over-grinding of the working blade 32.

[0031] The sharpening tool is mainly composed of a detachable grinding stone 2 and a fixed base 1. It has a simple structure and is easy to use. Operators do not need to have advanced skills or experience to easily achieve a standardized and regulated sharpening process with this sharpening tool, reducing the difficulty of operation and improving operational efficiency.

[0032] In some embodiments, the guide groove 11 has slopes 111 on both opposite sides, and the slopes 111 extend along a preset direction D1, so that the upper end of the cross-sectional shape of the guide groove 11 is V-shaped.

[0033] The slopes 111 on both sides of the guide groove 11 naturally guide the scraper 3 to the center of the guide groove 11 when it is inserted. Because the slopes 111 slope inwards, the scraper 3 can only enter and slide smoothly when it is near the center of the guide groove 11. The working blade 32, which is off-center, is guided back to the center of the guide groove 11 by the slopes 111, allowing it to smoothly contact the grinding stone 2 below the guide groove 11. This reduces misoperations or inefficient operations caused by alignment difficulties or inconvenient insertion, and helps to achieve a fast, efficient, and standardized process for sharpening the working blade 32.

[0034] The working blade 32, as a key part of the scraper 3 used for scraping and cutting, typically has a certain arc shape in its cross-section to enhance scraping performance and reduce the risk of tissue damage. In some embodiments, the radius of curvature of the cross-section of the working blade 32 is R1, and the outer wall of the fixing base 1 is provided with at least one rounded corner edge 14, the radius of curvature of the cross-section of the rounded corner edge 14 being R2, where R2 is less than or equal to R1. Microscopically, the working blade 32 will form burrs after being sharpened. To test whether the sharpened working blade 32 has reached a certain level of sharpness, the sharpened working blade 32 can be manually placed against the rounded corner edge 14 made of plastic and moved relative to it. If a significant frictional resistance can be felt, it indicates that there are burrs on the surface of the working blade 32, meaning that the working blade 32 has been sharpened. If the sharpened working blade 32 still feels smooth or has little resistance when placed against the rounded corner edge 14 made of plastic, it indicates that the working blade 32 is not sharp enough. R2 being less than or equal to R1 ensures that the rounded corner edge 14 is in full contact with the working blade 32, so as to accurately detect the sharpness of the working blade 32. Please see Figure 2 As shown, the neck 31 is provided with an indicator mark 311 corresponding to the position of the working blade 32, and the guide groove 11 is provided with a matching mark 13 corresponding to the indicator mark 311 on the side near the whetstone 2. The shapes of the matching mark 13 and the indicator mark 311 include, but are not limited to, brand logos, arrows, scale lines, etc.

[0035] Indicator mark 311 is positioned on the neck 31 of the scraper 3 corresponding to the working blade 32, directly indicating the spatial position of the working blade 32. Matching mark 13 is positioned on the side of the guide groove 11 near the grinding stone 2, corresponding spatially to the indicated mark 311, creating a visual correspondence. This assists the operator in accurately aligning the working blade 32 with the working surface 21 of the grinding stone 2. It provides the operator with a simple method for aligning the working blade 32 with the grinding stone 2, eliminating the need for complex judgments; simply matching and aligning the indicator mark 311 with the matching mark 13 quickly completes the correct insertion.

[0036] When sharpening the same scraper 3 or different scrapers 3 multiple times, inconsistent placement each time will result in inconsistent grinding depth of the working blade 32. By aligning the indicator mark 311 with the matching mark 13, it is ensured that the working blade 32 is in the same position in the guide groove 11 during each operation, maintaining the same distance of frictional contact with the grinding stone 2, thus guaranteeing a high degree of repeatability in the sharpening process. This improves the consistency of sharpening effects between different sharpening sessions and between different scrapers 3, ensuring that each instrument achieves similar sharpness and performance.

[0037] Please see Figure 4 As shown, in some embodiments, a plurality of evenly spaced matching marks 13 are provided on one side of the guide groove 11. The distance of each matching mark 13 from the open end of the guide groove 11 increases gradually, and the wear amount of the working blade 32 corresponding to each matching mark 13 also increases gradually. This ensures both sharpening efficiency and allows the operator to accurately control the amount of grinding on the working blade 32 each time, thus ensuring the accuracy of sharpening.

[0038] Please see Figure 5 As shown, in some embodiments, the sharpener has an end face 15, through which a guide groove 11 penetrates, creating a first opening 112 on the end face 15. During the sharpening process of the working blade 32, the working blade 32 can slide out of the guide groove 11 from the first opening 112, preventing the working blade 32 from colliding with the fixed base 1. And / or a limiting hole 12 penetrates through the end face 15, creating a second opening 122 on the end face 15. The second opening 122 allows the grinding stone 2 to be inserted into the fixed base 1. The second opening 122 provides an unobstructed insertion channel for the grinding stone 2, allowing the operator to directly push the grinding stone 2 into the limiting hole 12 from this end without disassembling the fixed base 1 or performing other complex operations, thus simplifying the assembly process of the grinding stone 2.

[0039] When the second opening 122 and the first opening 112 are located on the same end face 15 of the fixed base 1, during the sharpening process of the working blade 32, the relative friction between the working blade 32 and the grinding stone 2 causes the grinding stone 2 to tend to loosen from the second opening 122 of the limiting hole 12 or even slide out of the guide groove 11. By setting the second opening 122 and the first opening 112 on opposite end faces 15 of the fixed base 1, the ease of disassembling the grinding stone 2 can be ensured, while preventing the grinding stone 2 from becoming loose.

[0040] In some embodiments, the sharpener further includes a blocking portion 17 located in the extending direction of the limiting hole 12. The blocking portion 17 limits the depth to which the grinding stone 2 penetrates the fixing base 1, and the blocking portion 17 determines the position of the grinding stone 2 relative to the fixing base 1 in a preset direction D1. The blocking portion 17 has a through-hole 171 penetrating the fixing base 1, allowing the operator to apply external force to the end face of the grinding stone 2 manually or with other tools through the through-hole 171, making it easier to remove the grinding stone 2 from the positioning hole.

[0041] Please see Figure 6 As shown, in the second embodiment, the sharpener has a first boss 18 and a second boss 19, the first boss 18 and the second boss 19 are spaced apart to form a guide groove 11, and at least part of the limiting hole 12 is located on the second boss 19.

[0042] The grinding stone 2 will gradually wear down, become dull, and even crack or chip during use. These changes directly affect the sharpening effect. If the grinding stone 2 is completely enclosed by the fixing seat 1, the operator cannot visually judge the remaining lifespan, wear level, or any abnormalities of the grinding stone 2. The length of the first protrusion 18 in the preset direction D1 is greater than the length of the second protrusion 19 in the preset direction D1, ensuring that at least a portion of the grinding stone 2 is exposed in the space where the fixing seat 1 is located. This allows the operator to directly observe the actual condition of the grinding stone 2 without disassembling the fixing seat 1. During the sharpening of the working blade 32, the operator can directly apply external force to the exposed portion of the grinding stone 2 to ensure the stability of the grinding stone 2's position.

[0043] In some embodiments, the fixing base 1 is further provided with an air gap hole 121, which extends along a preset direction D1 and communicates with the limiting hole 12.

[0044] The air gap 121 provides an assembly allowance for easy installation of the grinding stone 2. Due to machining errors in the grinding stone 2, its outer contour may not perfectly match the shape of the limiting hole 12. The presence of the air gap 121 allows the limiting hole 12 to have a certain assembly allowance, enabling grinding stones 2 within a certain machining error range to be smoothly assembled into the limiting hole 12, thus improving the efficiency of assembling the grinding stone 2 with the mounting base.

[0045] Please see Figure 7 As shown, in the third embodiment, the fixing base 1 is provided with anti-slip texture 16, and with the guide groove 11 as the center of symmetry, the anti-slip texture 16 is symmetrically distributed on the outer surface of the fixing base 1.

[0046] The anti-slip texture 16 is an uneven texture, stripes, particles, or other form of anti-slip structure provided on the outer surface of the fixed base 1. Its main function is to increase the friction between the fingers and the surface of the fixed base 1. It is intended to prevent the operator from slipping when holding, picking up, moving, applying pressure, or operating the fixed base 1, and can also improve the overall aesthetics of the fixed base 1.

[0047] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A sharpener for sharpening a working edge on a neck portion of a curet, comprising: include: Whetstone, including the working surface; and The fixed base is provided with a guide groove and a limiting hole. The guide groove and the limiting hole both extend along a preset direction and are interconnected. The guide groove is used for insertion of the neck, and the limiting hole is used for placing the grinding stone. When the neck is inserted into the guide groove, the angle α formed by the working surface and the preset plane of the working blade satisfies: 60°≤α≤80°, and the neck can move along the preset direction so that the working blade rubs on the working surface along the preset direction.

2. The sharpener of claim 1, wherein The angle α formed by the working surface and the preset plane of the working blade is 70°.

3. The sharpener of claim 1 wherein, Both sides of the guide groove are provided with slopes, which extend along the preset direction, so that the upper part of the cross-sectional shape of the guide groove is V-shaped.

4. The sharpening tool according to claim 1, characterized in that, The radius of curvature of the cross-section of the working blade is R1, and the outer wall of the fixed base is provided with at least one rounded corner edge, the radius of curvature of the cross-section of the rounded corner edge is R2, and R2 is less than or equal to R1.

5. The sharpener of claim 1 wherein, The guide groove has a matching mark on the side near the grinding stone.

6. The sharpener of claim 1 wherein, The sharpener has an end face, and the guide groove penetrates the end face, so that the end face has a first opening; And / or, the limiting hole penetrates the end face, so that the end face has a second opening.

7. The sharpener of claim 1 wherein, It also includes a blocking part, which is located in the extending direction of the limiting hole.

8. The sharpener of claim 1 wherein, The grinding tool has a first boss and a second boss, which are spaced apart to form the guide groove, and at least part of the limiting hole is located on the second boss; the length of the first boss in the preset direction is greater than the length of the second boss in the preset direction, so that at least a part of the grinding stone is exposed in the space where the fixed seat is located.

9. The sharpener of claim 1 wherein, The fixing base is also provided with an air gap hole, which extends along the preset direction and is connected to the limiting hole.

10. The sharpener of claim 1 wherein, The outer surface of the mounting base is provided with anti-slip texture.

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