JP3037056U - Blade sharpening fixture - Google Patents

Abstract

(57) [Abstract] [Problem] It is possible to adjust the optimum sharpening angle according to the type and usage situation of the blade and the preference of the user, and moreover, it is possible to easily and uniformly support the front and back sides of the entire blade. An object is to provide a tool sharpening fixture capable of sharpening a tool at an angle. SOLUTION: A fixing tool 1 for changing and fixing a sharpening angle θ of a blade with respect to a grindstone T adjusts a height from a back of a cutting tool to a grindstone T according to a length from a cutting edge to a back, and an outer casing 2a. , 3
An adjusting screw shaft 7 is provided inside the inner casings 2b and 3b so that the a and the inner casings 2b and 3b are fitted and expanded.
On the back side of the contact surface with the grindstone of a, the moving screw shafts 8 that move forward and backward at right angles to the pivotal support position of the adjusting screw shaft 7 are respectively pivoted, and the contact surface with the grindstone T is harder than the grindstone T. It has adjusting members 2 and 3 made of a material.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a blade sharpening fixture capable of easily and uniformly sharpening at an optimal sharpening angle according to the cutting edge of various types of blades.

[0002]

[Prior art]

 Conventionally, when a blade such as a knife is used, the blade is worn and becomes dull, so that the angle of the blade is regularly sharpened with a grindstone. For example, knives and scissors used by various craftsmen may be requested by a specialist who sharpens the blade to sharpen. The reason for requesting a craftsman to sharpen a blade is that, due to the intuition of the craftsman and his many years of experience, he can always sharpen the entire blade of the blade at a uniform angle in order to keep the sharpness of the blade constant.

[0003]

[Problems to be solved by the device]

 By the way, for example, when sharpening a blade with a whetstone at home, since ordinary people do not have the experience and long experience of a craftsman described above, it is possible to sharpen the entire blade crossing at a uniform angle. It was very difficult. Further, since the blade has front and back surfaces of the blade, and it is necessary to make the sharpening angle different depending on the front and back surfaces, it was not easy to sharpen the blade accurately and properly.

The present invention is intended to solve the above-mentioned problems, and an ordinary person can adjust the sharpening angle to the optimum one according to the type and usage of the blade in a general household. The blade can be sharpened at an adjusted angle that corresponds to the front and back over the entire blade easily and uniformly, thus maintaining the sharpness according to the various blades or the user's preference. An object of the present invention is to provide a blade sharpening fixture capable of cutting.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the tool sharpening fixture according to the present invention is an adjusting member for adjusting the height from the back of the tool to the grindstone according to the length from the cutting edge to the back and maintaining the height. Had. Further, in the blade sharpening fixture of the present invention, the adjusting member is composed of an outer casing and an inner casing, and the outer casing and the inner casing are fitted and expanded so that the grinding surface of the grindstone and the blade can be adjusted. The angle with the blade edge of was adjusted.

[0006]

[Embodiment of the invention]

 The blade sharpening fixture according to claim 1 of the present invention is a fixture for fixing a sharpening angle of a blade with respect to a grindstone when sharpening various types of blades, and the grindstone from the back of the blade is adjusted according to a length from a cutting edge to a back. It has an adjusting member that adjusts the height of the grinding wheel and holds the height, and a material harder than the grinding stone is used for the contact surface of this adjusting member with the grinding stone.

According to the above configuration, the blade sharpening fixture adjusts the height from the back of the blade to the grinding surface of the grindstone by the adjusting member to change the angle formed by the cutting edge and the grinding surface of the grindstone. That is, the angle formed by the cutting edge and the grinding surface of the grindstone differs depending on the type of blade, the thickness of the blade, or the preference of the user. In order to determine this angle, the length from the blade tip to the spine and the length from the blade back to the grinding surface of the grindstone are conditions. By recording the conditions for determining this angle, even if one condition changes, the sharpening angle can be kept constant by changing the other condition according to this condition. In other words, the blade sharpening fixture of the present invention adjusts the amount of change in the length from the blade edge to the back of the blade due to the use of the blade by adjusting the length from the blade back to the grinding surface of the grindstone. Is kept constant. In addition, the adjusting member that is attached integrally with the blade on the sharpening surface of the grindstone uses a material that is harder than the grindstone for the contact surface with the grindstone, so similarly sharpening the blade causes the adjusting member to grind and wear. There is no such thing.

Further, in the blade sharpening fixture of claim 2 of the present invention, in the configuration of claim 1, the adjusting member is a pair of front side and back side of the blade, and the blades are sandwiched between the respective facing surfaces. Each of them has an urging member for urging the opposing surfaces thereof, and each adjusting member includes an outer casing and an inner casing, and the outer casing and the inner casing are fitted to each other. In order to expand and contract, the adjustment screw shaft pivotally supported inside the inner housing is provided on the back surface of the contact surface between the outer housing and the grindstone, and moves back and forth orthogonally to the pivot position of the adjustment screw shaft. It has a moving screw shaft.

According to the above configuration, since the blade has the front and back surfaces of the blade, if the angle of the front surface is determined, the angle of the back surface can be determined. Therefore, the height of the back surface can be determined by previously determining the length from the back of the cutting tool to the grinding surface of the grindstone. The length from the back of the blade to the grinding surface of the grindstone can be determined, eliminating the need to change the adjustment members on the front and back surfaces. Regarding the adjustment, since the outer and inner casings are relatively fitted and expanded by turning the adjusting screw shaft, fine adjustment is possible and the pressing force applied to the blade when sharpening the blade is also possible. Endure.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing the outer appearance of a blade sharpening fixture (hereinafter, simply referred to as a fixture) of the present invention. FIG. 2 is a diagram showing an internal configuration of the fixture. FIG. 3 is a view showing a state in which a fixture is attached to a knife as a knife. FIG. 4 is a view on arrow A in the state of FIG.

The fixing tool 1 adjusts the height from the back of the cutting tool to the grindstone T according to the length from the cutting edge to the back, and holds the height. (In case). These adjusting members 2 and 3 are similarly protected when a material harder than the grinding stone T, such as industrial diamond, is adhered to the contact surface with the grinding stone T so that the adjusting members 2 and 3 do not grind and wear when the knife C is sharpened. It has layers 4 and 5. Since the adjusting member 2 and the adjusting member 3 have different sharpening angles depending on the front and back surfaces of the knife C as described later, they are attached to the front surface of the knife C so that the front and back surfaces can be easily distinguished. The adjusting member 2 is longer than the adjusting member 3 in the longitudinal direction.

Further, the front and back adjusting members 2 and 3 urge the respective adjusting members 2 and 3 to face each other in order to hold the kitchen knife C between the facing faces. 2 has a leaf spring 6 as shown in FIG. Further, the adjustment members 2 and 3 on the front and back sides are formed of outer casings 2a and 3a and inner casings 2b and 3b, so that the outer casings 2a and 3a and the inner casings 2b and 3b are fitted and expanded. Is configured. That is, the inner housings 2b and 3b pivotally support the adjusting screw shafts 7 and 7 therein. On the other hand, the outer casings 2a and 3a are provided with moving screw shafts 8 and 8 meshing with the adjusting screw shafts 7 and 7 on the rear surface of the contact surface with the grindstone T inside thereof. It is pivotally supported so as to rotate in a direction orthogonal to the rotation and to move back and forth with respect to the pivotally supporting position of the adjusting screw.

For example, when the outer casing 2a and the inner casing 2b of the adjustment member 2 on the front surface are fitted and expanded and contracted, when the user turns the adjusting portion 7a protruding from the outer and inner casings 2a and 2b, the inner casing is closed. The adjusting screw shaft 7 inside the 2b rotates, and the moving screw shaft 8 of the outer casing 2a that meshes with the adjusting screw shaft 7 rotates. At this time, the rotation of the adjusting screw shaft 7 in the vertical direction in the drawing is converted into the rotation in the horizontal direction of the drawing, and the moving screw shaft 8 moves up and down in the drawing with respect to the pivot position of the adjusting screw shaft 7. As a result, the outer casing 2a and the inner casing 2b are fitted and expanded and contracted, and the fine adjustment can be performed, so that the pressing force applied when the knife C is sharpened can be endured.

When sharpening the knife C with the grindstone T, in the case of a right-handed knife, the left side of the knife C is the surface when viewed from the handle of the knife C, and the adjusting member 2 on the surface of the fixture 1 is placed on the back of this surface. So that is positioned. At this time, needless to say, the adjusting member 3 on the back surface is simultaneously attached to the back surface of the knife C. Then, the knife C is placed on the grindstone T. At this time, the knife C is inclined as shown in FIG. The inclination angle is changed by rotating the adjusting portion 7a to change the height from the back of the knife C of the adjusting members 2 and 3 to the sharpening surface of the grindstone T, and the length from the cutting edge of the knife C to the back and the grindstone. Adjust the angle θ formed by the sharpening surface of T. After setting this angle θ 2, the knife C is turned upside down and the angle of the blade on the back is set in the same manner as above. Then, by sharpening the front and back surfaces of the kitchen knife C, the kitchen knife C can sharpen the kitchen knife C uniformly at the set angle θ over the entire blade crossing.

The angle θ described above may be appropriately determined according to the type of knife C, the length from the cutting edge to the spine, the thickness of the knife C, and the conditions desired by the user. Then, by adjusting the height of the fixture 1 so that the angle θ can be obtained, a kitchen knife C having a constant sharpness can always be obtained. Further, as described above, since the fixing tool 1 is long over the blade span of the knife C, the force for evenly sharpening is applied to the entire blade span of the kitchen knife C, and the angle of the blade span is partially different. There is no. Further, since the fixing tool 1 is provided with the protective layers 4 and 5 on the surface facing the grinding surface of the grindstone T of the adjusting members 2 and 3, the facing surface is ground and worn, and the absolute height of the fixing tool 1 is increased. It does not fluctuate. Further, since the front and back adjusting members 2 and 3 are integrated by the leaf spring 6 and are attached to the back of the kitchen knife T at positions where they do not interfere, it is convenient and the work itself for sharpening the kitchen knife C is facilitated.

The blade sharpening fixture of the present invention is not limited to the above-mentioned embodiment, and various modifications can be made. For example, the fixture 1 is attached to the kitchen knife C in the above embodiment, but naturally, it can be widely attached to a knife such as a knife, scissors, a cutter knife, a razor, a hoe, and a hook. You can sharpen as well.

[0017]

[Effect of the invention]

 As described above, in the blade sharpening fixture of the present invention, the length from the back of the blade to the grindstone is adjusted by the adjusting member to maintain the height, so the type and condition of the blade, the user's You can easily sharpen the blade according to your preference, and the finish can be uniform over the entire blade and the front and back surfaces can be sharpened accurately. Further, in the blade sharpening fixture according to the present invention, since the contact surface of the adjusting member with the grindstone is made of a material harder than the grindstone, the adjusting member does not easily grind and wear.

[Brief description of the drawings]

FIG. 1 is an external view of a blade sharpening fixture according to an embodiment of the present invention, (a) is a front view, (b) is a left side view, and (c) is a right side view.

2A and 2B are cross-sectional views showing the internal structure of a blade sharpening fixture according to an embodiment of the present invention, in which FIG. 2A is a state in which an adjusting member is extended and FIG.

FIG. 3 is a view showing a state where a blade sharpening fixture according to an embodiment of the present invention is attached to a kitchen knife.

FIG. 4 is a view taken in the direction of arrow A in FIG. 3, showing a state in which a blade sharpening fixture according to an embodiment of the present invention is attached to a kitchen knife.

[Explanation of symbols]

 1 (blade sharpening) fixture 2 (front) adjusting member 2a outer housing 2b inner housing 3 (back) adjusting member 3a outer housing 3b inner housing 4 protective layer 5 protective layer 6 leaf spring (biasing member) 7 Adjusting screw shaft 8 Moving screw shaft T Grindstone C Knife (blade) θ Angle

Claims (2)

[Utility model registration claims] 1. A fixture for fixing a sharpening angle of a blade to a grindstone when sharpening various kinds of blades, and adjusting a height from the back of the blade to the grindstone according to a length from a cutting edge to a back thereof. A blade sharpening fixture characterized in that it has an adjusting member for holding the height, and a material harder than the grindstone is used for a contact surface of the adjusting member with the grindstone. 2. The adjusting member is a pair of a front side and a back side of a cutting tool, and each of the facing surfaces has a biasing member that holds the cutting tool and biases the facing surface to each other.
Each adjusting member is composed of an outer casing and an inner casing, and an adjusting screw shaft pivotally supported inside the inner casing for fitting and expanding the outer casing and the inner casing, and The cutter according to claim 1, further comprising a moving screw shaft that is provided on a back surface of a contact surface of the outer casing with the grindstone and that moves forward and backward orthogonally to a pivotal position of the adjusting screw shaft. Sharpening fixture.