Fixed-angle knife sharpener convenient to operate

By introducing a tool clamping component and an angle adjustment component into the sharpener, the problem of poor adaptability of existing sharpeners is solved, enabling rapid fixing and angle adjustment of different tools, thus improving sharpening efficiency and safety.

CN224129478UActive Publication Date: 2026-04-17SHENZHEN JIEHAI TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN JIEHAI TECHNOLOGY CO LTD
Filing Date
2025-05-26
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing sharpeners can usually only sharpen tools with a specific cutting angle, resulting in poor adaptability. Multiple sharpeners with different angles are needed to meet the needs of different tools.

Method used

An easy-to-operate fixed-angle sharpener is designed, comprising a clamping body and an angle adjustment component. A tool clamping assembly is provided on one side of the clamping body, which fixes and removes the tool by clamping studs. On the other side, the angle between the tool and the sharpening stone is adjusted by a support ball and an angle adjustment component.

Benefits of technology

It enables rapid fixing and angle adjustment of tools of different thicknesses, improves the flexibility and adaptability of sharpening, reduces operator muscle fatigue, and simplifies the tool installation and disassembly process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a fixed-angle knife sharpener convenient to operate, which comprises a clamping seat body, a knife pressing and fixing component is arranged on one side of the clamping seat body in a combined manner, an angle adjusting piece is arranged on the other side of the clamping seat body in a combined manner, and a supporting universal ball is coaxially combined at the bottom of the angle adjusting piece through a combined connecting piece. The tool clamping seat has the advantages that the tool pressing and fixing assembly is arranged on one side of the clamping seat body in a combined mode, then a tool body can be clamped and fixed in the opening clamping groove by means of the mode that a pressing stud of the tool pressing and fixing assembly is tightened, meanwhile, the tool body can be detached from the opening clamping groove only by screwing the pressing stud, and the tool clamping seat is convenient to use. The mode of compressing, fixing and unfixing the cutter body is simple and easy to achieve, the cutter body can be pushed to grind the cutting edge on the cutter sharpening stone in a reciprocating mode by holding the clamping base body after the cutter body is rapidly fixed, and meanwhile the cutter body can be rapidly separated from the clamping base body after cutter sharpening is completed.
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Description

Technical Field

[0001] This utility model relates to the field of knife sharpeners, and more specifically to a fixed-angle knife sharpener that is easy to operate. Background Technology

[0002] A knife sharpener is a tool used for sharpening knives. In a home kitchen, the most common knife sharpening tool is usually a whetstone. The traditional way of sharpening knives is to use a whetstone, holding the knife and rubbing the blade back and forth on the whetstone to achieve the purpose of sharpening. This not only requires a high level of sharpening skill, but is also inefficient and unsafe. Therefore, as users have increasingly higher requirements for the angle and efficiency of the knife sharpening process, knife sharpeners have been designed and manufactured to assist in sharpening knives.

[0003] However, existing sharpeners typically only have a single fixed sharpening angle in actual use, and can only sharpen knives with a similar cutting edge angle. Since different knives have different cutting edge angles, multiple sharpeners with different sharpening angles are needed to meet daily use, resulting in poor adaptability. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-operate fixed-angle sharpener to solve the above-mentioned problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides an easy-to-operate fixed-angle sharpener, including a clamp body, which is horizontally arranged. A tool clamping component is assembled on one side of the clamp body to achieve flat clamping and fixing of the tool body by means of the tool clamping component.

[0007] An angle adjustment component is assembled on the other side of the clamp body, and a support universal ball is coaxially assembled at the bottom of the angle adjustment component through a combination connector. The angle adjustment component is used to adjust the relative angle between the tool body and the surface of the whetstone when the support universal ball is on the ground.

[0008] Preferably, the tool clamping assembly includes an open slot and a clamping stud. The open slot is horizontally provided on one side of the clamp body, and the open slot is open at both the front and back. A mating hole is vertically provided on the top surface of the clamp body, and the mating hole is vertically connected to the open slot. The clamping stud is vertically coaxially inserted into the mating hole in a threaded manner, and the lower end of the clamping stud is close to the bottom surface of the open slot.

[0009] Preferably, the opening slot is a U-shaped slot with the U-shaped notch facing outwards.

[0010] Preferably, the top end of the clamping stud is coaxially fixed with an end for easy handling.

[0011] Preferably, the bottom end of the clamping stud is covered and fixed with a buffer block, and the bottom surface of the buffer block is flat.

[0012] Preferably, the angle adjustment component includes an insertion hole and an adjustment stud. The insertion hole is vertically opened on the other side of the top surface of the clamp body, and the insertion hole is a through hole. The adjustment stud is vertically and coaxially inserted into the insertion hole in a threaded manner. The bottom end of the adjustment stud is coaxially assembled with the support ball joint through the combined connector. The portion of the adjustment stud extending out of the top surface of the clamp body is coaxially engaged with a locking nut.

[0013] Preferably, the locking nut is a hand-tightened knurled nut, and the top of the adjusting stud is coaxially fixed with a handle for easy gripping.

[0014] Preferably, the adjusting stud is provided with an elastic washer slidably fitted on the portion between the top surface of the clamp body and the bottom surface of the locking nut, and the outer diameter of the elastic washer is not greater than the outer diameter of the locking nut.

[0015] Preferably, the combined connector is wherein a pad is coaxially fixed to the bottom end of the adjusting stud, and a mounting hole is vertically coaxially opened on the bottom surface of the pad; a mounting rod is coaxially and vertically fixed to the top surface of the supporting universal ball; and the supporting universal ball is installed at the bottom of the adjusting stud by means of the mounting rod and the mounting hole being coaxially combined.

[0016] Preferably, the supporting omnidirectional ball is a KSM15-FL bullseye omnidirectional ball, and the mounting rod and the mounting hole are coaxially and detachably assembled by means of threaded connection.

[0017] The aforementioned easy-to-operate fixed-angle sharpener, in practical use, features a tool clamping assembly mounted on one side of the clamping body. By tightening the clamping stud of the tool clamping assembly, the tool body can be clamped in the open slot. Simultaneously, simply turning the clamping stud allows the tool body to be removed from the open slot. The clamping and releasing method for the tool body is simple and easy to implement. It facilitates quick clamping of the tool body, allowing the clamping body to be held and the tool body to be pushed back and forth on the whetstone for sharpening. This design helps alleviate muscle fatigue during the sharpening process and facilitates quick separation of the tool body from the clamping body after sharpening. Furthermore, the adjustable distance between the clamping stud and the bottom surface of the open slot allows the tool clamping assembly to securely hold tool bodies of varying thicknesses, enhancing its adaptability and making it suitable for use as a sharpening aid for tools of different thicknesses. Additionally, the angle adjustment component is mounted on the other side of the clamping body, and its bottom is coaxial with the connecting component. The assembly includes a support ball joint, and the position and height of the clamp body can be adjusted by turning the adjusting screw of the angle adjustment component. This adjustment method is simple and easy to implement, facilitating the adjustment of the clamp body to a suitable working height to accommodate the whetstone. Simultaneously, it allows adjustment of the relative angle between the knife blade and the whetstone surface when the support ball joint is on the ground, thus adjusting the knife blade's sharpening angle and improving the flexibility of sharpening. Furthermore, because the pad is coaxially fixed to the... After the bottom of the adjusting stud of the angle adjusting component is reached, the support universal ball can be quickly assembled at the bottom of the angle adjusting component by means of the coaxial thread engagement between the mounting rod and the mounting hole of the combined connector. At the same time, the support universal ball can be removed from the bottom of the angle adjusting component simply by turning the mounting rod apart from the mounting hole. The assembly and disassembly of the support universal ball at the bottom of the angle adjusting component is simple and easy to implement, which facilitates both the assembly and use of the support universal ball and the subsequent removal of the support universal ball for maintenance and replacement.

[0018] The beneficial effects are as follows: 1. This utility model has a tool clamping component assembled on one side of the clamping body. By tightening the clamping stud of the tool clamping component, the tool body can be clamped in the open slot. At the same time, the tool body can be removed from the open slot by simply tightening the clamping stud. The clamping and unclamping method of the tool body is simple and easy to implement. It is convenient to quickly fix the tool body and then hold the clamping body to push the tool body to grind the blade back and forth on the whetstone. This helps to relieve muscle fatigue of the operator during the holding process. At the same time, it is convenient to quickly separate the tool body from the clamping body after grinding.

[0019] 2. Since the distance between the clamping stud and the bottom surface of the open slot is adjustable, the tool clamping assembly can clamp and fix tool bodies of different thicknesses, which improves the adaptability of the tool clamping assembly and makes it convenient for use as a grinding aid for tools of different thicknesses.

[0020] 3. An angle adjustment component is assembled on the other side of the clamp body, and a support universal ball is coaxially assembled at the bottom of the angle adjustment component through a combination connector. By turning the adjustment screw of the angle adjustment component, the position and height of the clamp body can be adjusted. The position and height adjustment of the clamp body is simple and easy to implement. It is convenient to adjust the clamp body to a suitable working height to adapt to the position height of the whetstone. At the same time, it can adjust the relative angle between the knife body and the surface of the whetstone when the support universal ball is on the ground, thereby realizing the adjustment of the knife body sharpening angle and improving the flexibility of sharpening.

[0021] 4. After the pad is coaxially fixed to the bottom of the adjusting stud of the angle adjusting component, the support ball can be quickly assembled at the bottom of the angle adjusting component by coaxially threading the mounting rod and mounting hole of the assembly connector. At the same time, the support ball can be removed from the bottom of the angle adjusting component by simply turning the separating mounting rod and mounting hole. The assembly and disassembly of the support ball at the bottom of the angle adjusting component is simple and easy to achieve, which is convenient for use after assembling and installing the support ball, and also convenient for subsequent removal of the support ball for maintenance and replacement. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0023] Figure 1 This is an overall isometric schematic diagram of this utility model;

[0024] Figure 2 This is a utility model Figure 1 Front view external schematic diagram;

[0025] Figure 3 This is a utility model Figure 1 Front sectional view;

[0026] Figure 4 This is a utility model Figure 1 A left-view diagram;

[0027] Figure 5 This is a utility model Figure 1 A diagram showing the view from the right.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Tool clamping assembly; 101. Handle; 102. Adjusting stud; 103. Locking nut; 104. Elastic washer; 105. Through hole; 2. Clamp body; 3. Combined connector; 301. Pad; 302. Mounting rod; 303. Mounting hole; 4. Support ball joint; 5. Angle adjustment component; 501. End; 502. Mating hole; 503. Open slot; 504. Clamping stud; 505. Buffer block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] See Figures 1-5 As shown, this utility model provides an easy-to-operate fixed-angle sharpener, including a clamping body 2, which is horizontally positioned. A tool clamping assembly 1 is assembled on one side of the clamping body 2 to achieve flat clamping and fixing of the tool body. Specifically, the tool clamping assembly 1 includes an open slot 503 and a clamping stud 504. The open slot 503 is horizontally opened on one side of the clamping body 2, and the open slot 503 is open at both the front and rear. A mating hole 502 is vertically opened on the top surface of the clamping body 2, and the mating hole 502 is vertically connected to the open slot 503. The mating hole 502 is vertically coaxial with a threaded engagement. A clamping stud 504 is inserted, with its lower end close to the bottom surface of the open slot 503. The purpose of this arrangement is to clamp the tool body in the open slot 503 by tightening the clamping stud 504 of the tool clamping assembly 1. At the same time, the tool body can be removed from the open slot 503 simply by tightening the clamping stud 504. The clamping and unclamping method of the tool body is simple and easy to implement. Moreover, since the distance between the clamping stud 504 and the bottom surface of the open slot 503 is adjustable, the tool clamping assembly 1 can clamp and fix tool bodies of different thicknesses, thereby improving the usability of the tool clamping assembly 1.

[0032] See Figures 1-3As shown, an angle adjusting component 5 is assembled on the other side of the clamping body 2, and a support universal ball 4 is coaxially assembled at the bottom of the angle adjusting component 5 through a combination connector 3. This is used to adjust the relative angle between the tool body and the surface of the whetstone when the support universal ball 4 is on the ground. Specifically, the angle adjusting component 5 includes an insertion hole 105 and an adjusting stud 102. An insertion hole 105 is vertically opened on the other side of the top surface of the clamping body 2, and the insertion hole 105 is a through hole. The adjusting stud 102 is vertically coaxially inserted into the insertion hole 105 with a threaded engagement, and the bottom end of the adjusting stud 102 is connected to a combination connector 3. The connector 3 is coaxially mounted with a support ball joint 4, and the part of the adjusting stud 102 extending out of the top surface of the clamp body 2 is coaxially engaged with a locking nut 103. The purpose of this arrangement is that by turning the adjusting stud 102 of the angle adjusting component 5, the position and height of the clamp body 2 can be adjusted. The position and height adjustment of the clamp body 2 is simple and easy to implement. It is convenient to adjust the clamp body 2 to a suitable working height to adapt to the position and height of the whetstone. At the same time, it can adjust the relative angle between the blade and the surface of the whetstone when the support ball joint 4 is on the ground, thus realizing the adjustment of the blade's sharpening angle.

[0033] See Figures 1-5 As shown, the combined connector 3 specifically comprises a pad 301 coaxially fixed to the bottom end of the adjusting stud 102, and a mounting hole 303 vertically and coaxially opened on the bottom surface of the pad 301. A mounting rod 302 is coaxially and vertically fixed to the top surface of the support ball 4. The support ball 4 is installed at the bottom of the adjusting stud 102 by means of the mounting rod 302 and the mounting hole 303 coaxially combined. The reason for this setting is that after the pad 301 is coaxially fixed to the bottom end of the adjusting stud 102 of the angle adjusting component 5, the support ball 4 can be quickly assembled at the bottom of the angle adjusting component 5 by means of the coaxial thread engagement of the mounting rod 302 and the mounting hole 303 of the combined connector 3. At the same time, the support ball 4 can be removed from the bottom of the angle adjusting component 5 by simply turning the mounting rod 302 and the mounting hole 303 apart. The assembly and disassembly of the support ball 4 at the bottom of the angle adjusting component 5 is simple and easy to implement.

[0034] See Figures 1-5As shown, the following optimizations were made to this solution. Specifically, the open slot 503 is a U-shaped slot with an outward U-shaped notch, so that the open slot 503 has a design style that meets the usage requirements. Optionally, the top of the clamping stud 504 is coaxially fixed with an end head 501 for easy gripping, so that the clamping stud 504 can be tightened by applying force through the end head 501. Further optionally, a buffer block 505 is fixedly covered at the bottom of the clamping stud 504, and the bottom surface of the buffer block 505 is flat. With this setting, the buffer block 505 directly contacts the tool body and elastically deforms, which can improve the clamping stability of the tool body and prevent damage to the tool body surface.

[0035] See Figures 1-5 As shown, the locking nut 103 is a hand-tightened knurled nut. A handle 101 for easy gripping is coaxially fixed to the top of the adjusting stud 102. This design allows the locking nut 103 to be tightened and loosened directly by hand, and also facilitates rotation of the adjusting stud 102 by applying force through the handle 101. Optionally, an elastic washer 104 is coaxially slidably fitted onto the portion of the adjusting stud 102 between the top surface of the clamp body 2 and the bottom surface of the locking nut 103. The outer diameter of the elastic washer 104 is not greater than the outer diameter of the locking nut 103. This design allows the locking nut 103 to be tightened and prevented from loosening by compressing and deforming the elastic washer 104. Furthermore, the support omnidirectional ball 4 is a KSM15-FL bullseye omnidirectional ball, and the mounting rod 302 and the mounting hole 303 are coaxially detachable and can be combined by means of threaded connection. This setting makes it easy to purchase and obtain the support omnidirectional ball 4, and at the same time, it makes it easy to disassemble and assemble the mounting rod 302 and the mounting hole 303 by screwing.

[0036] With the above structure, in practical use, since a tool clamping assembly 1 is assembled on one side of the clamping body 2, the tool body can be clamped in the open slot 503 by tightening the clamping stud 504 of the tool clamping assembly 1. At the same time, the tool body can be removed from the open slot 503 simply by tightening the clamping stud 504. The clamping and releasing method of the tool body is simple and easy to implement. It is convenient to quickly fix the tool body and then hold the clamping body 2 to push the tool body to reciprocate on the whetstone to grind the cutting edge, which helps to slow down the grinding process. This design relieves muscle fatigue for operators during the sharpening process and facilitates quick separation of the tool body from the clamping body 2 after sharpening. Furthermore, the adjustable distance between the clamping stud 504 and the bottom surface of the open slot 503 allows the tool clamping assembly 1 to securely hold tool bodies of different thicknesses, enhancing its adaptability and making it suitable for use as a sharpening aid for tools of varying thicknesses. Additionally, an angle adjustment component 5 is mounted on the other side of the clamping body 2, and the bottom of the angle adjustment component 5 is coaxially connected via a connecting component 3. With a support ball joint 4, the position and height of the clamp body 2 can be adjusted by turning the adjusting screw 102 of the angle adjusting component 5. This adjustment method is simple and easy to implement, allowing the clamp body 2 to be adjusted to a suitable height to accommodate the whetstone. Simultaneously, it allows adjustment of the relative angle between the knife blade and the whetstone surface when the support ball joint 4 is on the ground, thus adjusting the knife blade's sharpening angle and improving the flexibility of sharpening. Furthermore, because the pad 301 is coaxially fixed to the angle adjusting component... After the bottom of the adjusting stud 102 of the section 5 is connected, the support ball 4 can be quickly assembled on the bottom of the angle adjusting component 5 by means of the coaxial thread engagement between the mounting rod 302 of the combination connector 3 and the mounting hole 303. At the same time, the support ball 4 can be removed from the bottom of the angle adjusting component 5 simply by turning the separating mounting rod 302 and the mounting hole 303. The assembly and disassembly of the support ball 4 on the bottom of the angle adjusting component 5 is simple and easy to achieve, which is convenient for use after assembling and installing the support ball 4, and also convenient for subsequent removal of the support ball 4 for maintenance and replacement.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An angle grinder for easy handling, comprising a holder body (2), characterized in that: The clamp body (2) is horizontally arranged, and a tool clamping assembly (1) is assembled on one side of the clamp body (2) to achieve the flat clamping and fixing of the tool body by means of the tool clamping assembly (1). An angle adjustment component (5) is provided on the other side of the clamp body (2), and a support universal ball (4) is coaxially connected to the bottom of the angle adjustment component (5) through the combination connector (3) to adjust the relative angle between the tool body and the surface of the whetstone when the support universal ball (4) is on the ground.

2. The angularly oriented sharpener of claim 1, wherein: The tool clamping assembly (1) includes an open slot (503) and a clamping stud (504). The open slot (503) is horizontally opened on one side of the clamp body (2), and the open slot (503) is open at both the front and back. The clamp body (2) has a mating hole (502) vertically opened on the top surface, and the mating hole (502) is vertically connected to the open slot (503). The clamping stud (504) is vertically and coaxially inserted into the mating hole (502) in a threaded manner, and the lower end of the clamping stud (504) is close to the bottom surface of the open slot (503).

3. The angularly oriented sharpener of claim 2 wherein: The opening slot (503) is a U-shaped slot with the U-shaped notch facing outwards.

4. The angularly oriented sharpener of claim 3 wherein: The top end of the clamping stud (504) is coaxially fixed with an end head (501) for easy handling.

5. The angle guide of claim 4 wherein: The bottom end of the clamping stud (504) is covered and fixed with a buffer block (505), and the bottom surface of the buffer block (505) is flat.

6. An angle guide for a rotary tool as claimed in any one of claims 2 to 5, wherein: The angle adjustment component (5) includes an insertion hole (105) and an adjustment stud (102). The insertion hole (105) is vertically opened on the other side of the top surface of the clamp body (2), and the insertion hole (105) is a through hole. The adjustment stud (102) is vertically and coaxially inserted into the insertion hole (105) in a threaded manner. The bottom end of the adjustment stud (102) is coaxially mounted with the support universal ball (4) through the combined connector (3). The part of the adjustment stud (102) extending out of the top surface of the clamp body (2) is coaxially engaged with the locking nut (103).

7. The angle guide of claim 6 wherein: The locking nut (103) is a hand-tight knurled nut, and the top end of the adjusting stud (102) is coaxially fixed with a handle (101) for easy gripping.

8. The angle guide of claim 7 wherein: The adjusting stud (102) is coaxially slidably fitted with an elastic washer (104) between the top surface of the clamp body (2) and the bottom surface of the locking nut (103), and the outer diameter of the elastic washer (104) is not greater than the outer diameter of the locking nut (103).

9. An angle guide for a rotary tool as claimed in claim 7 or 8, wherein: Specifically, the combined connector (3) has a pad (301) coaxially fixed to the bottom end of the adjusting stud (102), and the bottom surface of the pad (301) is vertically coaxially provided with a mounting hole (303). The top surface of the support universal ball (4) is coaxially vertically fixed with a mounting rod (302), and the support universal ball (4) is installed at the bottom of the adjusting stud (102) by means of the mounting rod (302) and the mounting hole (303) being coaxially combined.

10. The angle guide of claim 9 wherein: The supporting universal ball (4) is a KSM15-FL bullseye universal ball, and the mounting rod (302) and the mounting hole (303) are coaxially and detachably combined by means of threaded engagement.