Cutter

Abstract

The utility model discloses a cutter which comprises a cutter body, the cutter body comprises a blade, at least part of the area of the cutting edge of the cutter body is connected with a cutting edge reinforcing piece, and the hardness of the cutting edge reinforcing piece is larger than that of the cutter body. The cutting edge reinforcing piece is arranged on the cutter, so that the cutter has enough hardness to cut food materials, the cutter body does not need to be made of a high-hardness material, the cutter body can be made of a material which is relatively low in hardness or high in biocompatibility but soft in texture, and therefore the manufacturing cost of the cutter body is reduced while punching on the cutter body is facilitated; due to the fact that the knife body does not need to have high hardness so as to meet the requirement for fitting food materials, the knife body can be selectively designed to be light and thin, the light weight of the knife is facilitated, and the use experience of a user is improved; and the cutting edge reinforcer is high in strength and durability, so that the service life of the cutter is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of kitchen utensils, and in particular relates to a knife. Background Art

[0002] Knives are an indispensable kitchen utensil and are used every day in many families. Traditional iron or aluminum knives are difficult to meet the hardness requirements, so most of the knives currently on the market are made of carbide steel, which effectively improves the hardness of the knives, especially the hardness of the blade, but also brings some disadvantages. For example, in order to meet the hardness and toughness requirements of the knives, the thickness of the knives is often relatively large, which leads to a heavy weight of the knives, increases the burden on users, and increases the difficulty of punching holes in the knives and the difficulty of processing anti-slip structures. Moreover, steel knives have poor biocompatibility and are prone to cause allergic reactions or chemical reactions with food, causing the cut food to oxidize and deteriorate. Utility Model Content

[0003] The present application provides a cutting tool to solve the technical problems of the aforementioned cutting tool made of cemented carbide steel, such as the increase in weight and punching difficulty caused by improving the hardness.

[0004] The technical solution adopted in this application is:

[0005] A knife comprises a blade body, the blade body comprises a blade, the knife further comprises a blade reinforcement, the blade has a cutting edge, the blade reinforcement is attached to the cutting edge and covers at least a portion of the surface of the cutting edge, so that the blade reinforcement constitutes a force-bearing portion when the knife cuts an object, and the hardness of the blade reinforcement is greater than the hardness of the blade.

[0006] The tool in this application also has the following additional technical features:

[0007] The blade reinforcement is provided on at least one side of the blade and covers the blade portion on the corresponding side; and / or, along the length direction of the blade portion, the portion of the blade portion covered by the blade reinforcement occupies more than half of the entire blade portion.

[0008] The blade is made of titanium or titanium alloy; or, the blade comprises a substrate and a surface layer covering the surface of the substrate, and the surface layer is made of titanium or titanium alloy.

[0009] The blade reinforcement members are arranged on both sides of the blade portion. The blade reinforcement members are structured as a V-shaped structure in cross section, and both sides of the blade reinforcement members are inclined surfaces.

[0010] The maximum width of the V-shape is Amm, the height of the V-shape is Bmm, A and B satisfy 0.3≤A / B≤0.6, and B satisfies 2.5<B<8.

[0011] The blade body also includes a handle, which is fixedly connected to the blade; the tool also includes a handle and a connecting piece, the handle is provided with at least two connecting holes of different shapes and / or sizes, and the connecting piece is respectively passed through the handle and the connecting holes to fix the handle and the handle.

[0012] The connection holes include a first connection hole and a second connection hole. Both the first connection hole and the second connection hole are circular holes, and the hole diameter of the first connection hole is smaller than the hole diameter of the second connection hole.

[0013] The connecting holes further include a third connecting hole, and the third connecting hole is a waist-shaped hole.

[0014] The connecting holes include more than three, and the more than three connecting holes are arranged along the length direction of the knife handle, and the hole diameter of the connecting hole close to the blade body is smaller than the hole diameter of the connecting hole away from the blade body.

[0015] The knife handle comprises a first clip and a second clip respectively located on both sides of the knife handle, and the connecting member is configured as a parent-child rivet structure.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0017] 1. A knife provided in the present application has a blade reinforcement member provided on at least a portion of the blade portion, wherein the hardness of the blade reinforcement member is greater than the hardness of the blade body, so that the blade portion of the knife has sufficient hardness to cut food materials, and can effectively resist wear and deformation during the cutting process, thereby providing better cutting performance and extending the service life of the knife. On the premise that the blade portion has sufficient hardness due to the presence of the blade reinforcement member, the entire blade body can be made of a material with relatively low hardness and strong biocompatibility. Therefore, the thickness of the blade body can be appropriately reduced to make it thinner and lighter, which helps to make the knife lighter and improve the user experience. It can also greatly reduce the difficulty of punching holes in the blade body and the difficulty of processing the anti-slip structure. The blade body made of a material with strong biocompatibility can also greatly reduce the risk of the blade body causing allergic reactions, chemical reactions with food, and oxidation and deterioration of the cut food.

[0018] 2. As an optional embodiment of the present application, a blade reinforcement is arranged on at least one side of the blade and covers the blade portion of the corresponding side. The blade reinforcement can be arranged on the same side of the blade and cover the blade portion of that side, so that the blade portion of that side is covered as a whole by the blade reinforcement. The blade reinforcement can also be arranged on both sides of the blade and cover the blade portions on both sides, so that both sides of the blade are covered by the blade reinforcement in all directions, effectively improving the strength and hardness of the blade, ensuring that the blade has sufficient strength and cutting resistance to deformation, and greatly improving the service life.

[0019] In addition, as another optional embodiment of the present application, along the length direction of the blade, the portion of the blade covered by the blade reinforcement occupies more than half of the entire blade. When cutting some hard food, the knife needs to have sufficient strength and hardness, and the blade portion covered by the blade reinforcement can be used for cutting. When cutting some low hardness and soft food, the blade portion not covered by the blade reinforcement can be used for cutting, which helps to reduce the wear of the blade reinforcement.

[0020] 3. As an optional embodiment of the present application, the blade is made of titanium or titanium alloy. Titanium alloy has good corrosion resistance, and the blade body made of it is not easy to rust and perforate; titanium alloy also has good biocompatibility, and is not easy to produce chemical reactions with food materials, so it is less likely to affect the taste of food. At the same time, it is not easy to cause allergic reactions in the human body when the knife contacts the human body, which is also beneficial to human health; titanium alloy has a lower density than ordinary stainless steel and has good strength properties, which helps to reduce the weight of the knife, making the knife easier to use, and it will not lose strength properties, making the knife more durable.

[0021] In addition, as another optional embodiment of the present application, compared with a knife of the same volume but made entirely of iron or steel, the solution of making the surface layer of titanium alloy obviously reduces the overall weight of the knife, thereby making the knife more handy; on the other hand, since the sheet material is still made of iron or steel, the made knife has good strength performance, and the weight change of the knife will not be too obvious, and the user is more likely to get used to the weight of the knife. Titanium alloy as a surface layer can also exert good corrosion resistance and biocompatibility, and it is easier to control costs to a certain extent, making this solution easier to apply in practice. The substrate can be made of commonly used materials such as stainless steel, and the titanium alloy of the surface layer can be attached to the substrate by electroplating or the like.

[0022] 4. As an optional implementation of the present application, the blade reinforcement has a V-shaped structure, so that the bottom end of the blade reinforcement is more pointed and sharp, and its contact area with food is small when cutting food, and the cutting is smoother.

[0023] 5. As an optional implementation of the present application, the maximum width of the V-shape is Amm, the height of the V-shape is Bmm, A and B satisfy 0.3≤A / B≤0.6, and B satisfies 2.5<B<8. The width direction of the V-shape is also the thickness direction of the tool. In view of the fact that the inclination degrees of the two connecting surfaces of the tool are generally similar, that is, the V-shape is approximately an inverted isosceles triangle structure, A / B can actually be used to reflect the angle between the two connecting surfaces. The larger the value of A / B, the larger the angle between the two connecting surfaces, and the less sharp the corresponding blade; and the smaller the value of A / B, although the blade is sharper, the corresponding blade is more prone to chipping or bending, so the value of A / B needs to be maintained within a reasonable range to take into account the above-mentioned technologies. When 0.3≤A / B≤0.6, for example, 0.3, 0.4, 0.5 or 0.6, the angle between the two connecting surfaces is about 16°-32°. Within this size range, sharpness can be guaranteed while the probability of chipping or bending can be maintained within a smaller range.

[0024] 6. As an optional embodiment of the present application, the knife handle is provided with at least two connecting holes of different shapes and / or sizes, and the knife handle and the knife handle are fixedly connected by connecting pieces respectively passing through the knife handle and the connecting holes. The size of the connecting piece is selected based on the small-sized connecting hole, so that even if the through hole and the connecting hole provided in the knife handle are misaligned to a certain extent due to processing errors and installation errors, the remaining larger-sized connecting holes can be aligned with the through holes in at least part of the area, so that the connecting piece can pass through the connecting hole and the through hole to connect the knife handle and the knife handle.

[0025] 7. As an optional embodiment of the present application, the first connecting hole, the second connecting hole and the third connecting hole are arranged at intervals along the length direction of the handle to achieve multi-directional fixation in the length direction of the handle, with higher fixation firmness and more uniform force; because the force-applying end of the handle when the user holds the handle in his hand to process food is the end of the handle close to the blade, by setting the first connecting hole with a slightly smaller aperture on the side of the handle close to the blade, the matching strength between the connecting piece and the first connecting hole is higher than the matching strength with other holes, thereby improving the stability of the end of the handle close to the blade, making the handle more pressure-bearing and less likely to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 A front view of a tool according to an embodiment of the present application;

[0028] Figure 2An exploded view of a tool in one embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the structure of a tool in one implementation mode of the present application;

[0030] Figure 4 A cross-sectional view of a tool in one embodiment of the present application;

[0031] Figure 5 for Figure 4 Enlarged view of part A.

[0032] List of reference numerals:

[0033] 1. blade; 11. blade; 111. blade portion; 1110. connection surface; 1111. plane; 12. handle; 121. connection hole; 1211. first connection hole; 1212. second connection hole; 1213. third connection hole;

[0034] 2. Blade reinforcement;

[0035] 3. Knife handle; 31. First clip; 32. Second clip;

[0036] 4. Connector; 41. Sub-rivet; 42. Female rivet;

[0037] A, the maximum width of the V-shape; B, the height of the V-shape; C, the width of the wear-resistant layer; X, the width direction of the blade; Y, the height direction of the blade; Z, the length direction of the blade. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0040] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] like Figures 1 to 5 As shown, a knife comprises a blade body 1 , wherein the blade body 1 comprises a blade 11 , and at least a portion of a cutting edge 111 of the blade 11 is connected to a blade reinforcement 2 , wherein the hardness of the blade reinforcement 2 is greater than that of the blade body 1 .

[0044] By arranging a blade reinforcement 2 in at least a part of the blade portion 111, the hardness of the blade reinforcement 2 is greater than the hardness of the blade body 1, so that the blade portion 111 of the knife has sufficient hardness to cut food, and can effectively resist wear and deformation during the cutting process, thereby providing better cutting performance and extending the service life of the knife. On the premise that the blade portion 111 has sufficient hardness due to the presence of the blade reinforcement 2, the blade body 1 as a whole can be made of a material with relatively low hardness and strong biocompatibility. Therefore, the thickness of the blade body 1 can be appropriately reduced to make it thinner, which helps to make the knife lighter and improve the user experience. It can also greatly reduce the difficulty of punching holes in the blade body 1 and the difficulty of processing the anti-slip structure. The blade body 1 made of a material with strong biocompatibility can also greatly reduce the risk of the blade body 1 causing allergic reactions, chemical reactions with food, and oxidation and deterioration of the cut food. Optionally, the Mohs hardness of the blade can be controlled below 50 to facilitate punching; and the Mohs hardness of the blade reinforcement 2 can be controlled above 55, for example, it can be made of at least one of tungsten carbide, titanium carbide or molybdenum carbide.

[0045] Specifically, when manufacturing a tool, the blade 11 can be manufactured first, and then the material for making the blade reinforcement 2 can be coated on the blade portion 111 of the blade body 1 through a high-frequency density laser pulsation cladding process or other spraying process to form the blade reinforcement 2. The blade reinforcement 2 thus formed is tightly connected to the blade portion 111 and has good fit.

[0046] In some optional schemes, the raw material for making the blade 11 can be titanium or titanium alloy. For example, the titanium alloy raw material can be directly punched into a predetermined shape to make the blade 11. Titanium alloy is an alloy material with titanium as the main element, and has the advantages of high strength, strong corrosion resistance and good biocompatibility. The blade 11 made has good adaptability to the kitchen environment. In addition, the hardness of titanium alloy is relatively low. For example, it is softer than the commonly used cemented carbide steel and is easy to be processed and formed later. On the whole, the use of titanium alloy as the material of the blade 11 can make the manufactured knife body take into account the advantages of low hardness, easy processing, high strength, strong corrosion resistance and good biocompatibility.

[0047] In some other optional schemes, the blade 11 includes a substrate and a surface layer. The substrate for making the blade 11 can be iron or steel, such as 304 stainless steel, etc. The surface layer is attached to the surface of the substrate. The surface layer can be made of a material with good corrosion resistance and biocompatibility, such as a titanium alloy. In this scheme, the substrate can be made of any existing material used for kitchen knives, so it has the advantages of simple processing and easy cost control in steps such as punching; and the surface layer can be attached to the substrate by electroplating and other methods. Compared with the blade 11 that is completely made of titanium alloy, the amount of titanium alloy used in the electroplating method is less, which can effectively reduce the material cost. Moreover, when in use, the surface layer contacts the food, and the advantages of strong corrosion resistance and good biocompatibility of titanium alloy can also be brought into play. In addition, the weight of the knife made by this scheme is not much different from that of the existing knife, which is also convenient for users to adapt quickly.

[0048] The present application does not limit the structural form of the blade reinforcement 2, and it can adopt any one of the following embodiments:

[0049] Embodiment 1: The blade reinforcement 2 is arranged on at least one side of the blade 11 and covers the blade portion 111 on the corresponding side. This embodiment does not limit the covering method of the blade reinforcement 2. The blade reinforcement 2 is arranged on at least one side of the blade and covers the blade portion 111 on the corresponding side. The blade reinforcement 2 can be arranged on the same side of the blade and covers the blade portion 111 on this side, so that the blade portion 111 on this side is covered by the blade reinforcement 2 as a whole. Under this structural form, when cutting vegetables, the side covered with the blade reinforcement can be facing the food, because the side of the blade facing the food is subject to greater friction and is therefore more susceptible to wear. In this way, by specifically arranging the blade reinforcement on the side facing the food, wear can be alleviated and costs can also be saved; the blade reinforcement 2 can also be arranged on both sides of the blade and cover the blade portions 111 on both sides, so that both sides of the blade portion 111 are covered by the blade reinforcement 2 in all directions, effectively improving the strength and hardness of the blade portion 111, ensuring that the blade portion 111 has sufficient strength and cutting resistance deformation ability, and greatly improving the service life.

[0050] Implementation method 2: Figure 2 As shown, along the length direction of the blade 111 (i.e., the length direction Z of the blade body), the portion of the blade 111 covered by the blade reinforcement 2 accounts for more than half of the entire blade 111. When cutting some foods with higher hardness, the knife needs to have sufficient strength and hardness, and the portion of the blade 111 covered by the blade reinforcement 2 can be used for cutting. When cutting some foods with lower hardness and softer texture, the portion of the blade 111 not covered by the blade reinforcement 2 can be used for cutting, which helps to reduce the wear of the blade reinforcement 2. Specifically, the coverage area of ​​the blade reinforcement 2 is different for different types of knives. For some knives used to cut foods with higher hardness, such as ribs and frozen meat, more blade reinforcements 2 with higher hardness are needed for cutting. The portion of the blade 111 covered by the blade reinforcement 2 can account for 4 / 5 of the entire blade 111 to better meet the cutting needs for foods with higher hardness; and for some knives that are more used to cut foods with lower hardness, such as vegetables, the portion of the blade 111 covered by the blade reinforcement 2 can account for 1 / 2 of the entire blade 111.

[0051] As an optional embodiment under the second implementation mode, Figure 4 , Figure 5 As shown, blade reinforcement members 2 are provided on both sides of the blade portion 111, and the blade reinforcement member 2 is constructed as a V-shaped structure in cross section, and both sides of the blade reinforcement member 2 are inclined surfaces. The blade reinforcement member 2 is in a V-shaped structure, so that the top of the blade reinforcement member 2 is more pointed and sharp, and the food is cut more smoothly, thereby enhancing the cutting effect of the blade reinforcement member 2.

[0052] Specifically, refer to Figure 5, the cross section of the blade reinforcement 2 forms a V-shaped structure, the maximum width of the V-shaped structure is Amm, that is, the distance between the two connecting surfaces 1110 along the width direction X of the blade body is Amm; the height of the V-shaped structure is Bmm, that is, the height of the blade 111 along the height direction Y of the blade body is Bmm. Among them, 0.3≤A / B≤0.6, and B satisfies 2.5<B<8, that is, the height of the blade is 2.5mm-8mm. In this scheme, the angle α of the blade tip formed by the V-shaped structure is about 16°-32°. This angle range can make the blade tip have a good sharpness, while not being too sharp to cause insufficient strength and easy chipping. In addition, the value range of 0.3≤A / B≤0.6 can make the connecting surface 1110 have a sufficient width C, so that the blade reinforcement 2 has a sufficient attachment area, which helps to make the blade reinforcement 2 stably attached to the blade 111.

[0053] Furthermore, a plane 1111 may be formed at the position where the two connecting surfaces 1110 of the blade 111 meet, that is, Figure 5 As shown, a plane 1111 is provided at the tip of the blade 111, and the plane 1111 is parallel to the thickness direction X of the blade body. On the premise that the blade 111 meets the above shape, the blade 111 has good sharpness. On this basis, the plane 1111 can enhance the structural strength of the blade 111 and reduce the probability of edge rolling or edge chipping.

[0054] As an optional implementation of the present application, Figures 1 to 3 As shown, the blade 1 also includes a handle 12, which is fixedly connected to the blade 11; the knife also includes a handle 3 and a connecting member 4, the handle 12 is provided with at least two connecting holes 121 of different shapes and / or sizes, and the connecting member 4 is respectively penetrated through the handle 3 and the connecting hole 121 to fix the handle 3 and the handle 12. The handle 12 is provided with at least two connecting holes 121 of different shapes and / or sizes, and the handle 3 and the handle 12 are fixedly connected by the connecting member 4 being respectively penetrated through the handle 3 and the connecting hole. The size of the connecting member 4 is selected based on the small-sized connecting hole 121, so that even if the through hole and the connecting hole 121 provided in the handle 3 are misaligned to a certain extent due to the existence of processing errors and installation errors, the connecting member 4 can pass through to connect the handle 3 and the handle 12. The present application does not limit the structural form of the two connection holes 121. The two connection holes 121 can be of different shapes but the same size, or of the same shape but different sizes, or of different shapes and sizes.

[0055] As an optional embodiment of this implementation, Figure 3As shown, the connection hole 121 includes a first connection hole 1211 and a second connection hole 1212. The first connection hole 1211 and the second connection hole 1212 are both round holes, and the aperture of the first connection hole 1211 is smaller than the aperture of the second connection hole 1212. The first connection hole 1211 is set to have a smaller aperture than the second connection hole 1212. When the connection member 4 is installed, even if there is a certain deviation in the alignment between the connection member 4 and the handle 3, the second connection hole 1212 has enough margin to make up for the misalignment space, which is conducive to the installation of the connection member 4.

[0056] As an optional example under this embodiment, Figure 3 As shown, the connection hole 121 further includes a third connection hole 1213, which is a waist-shaped hole. By providing the third connection hole 1213, the connection stability between the handle 3 and the handle 12 is further improved, and the risk of the handle 3 falling off from the handle 12 is reduced.

[0057] Alternatively, if Figure 3 As shown, the first connection hole 1211, the second connection hole 1212 and the third connection hole 1213 are arranged at intervals along the length direction Z of the knife body, and the first connection hole 1211 is located on the side of the knife handle 12 close to the blade 11. The first connection hole 1211, the second connection hole 1212 and the third connection hole 1213 are arranged at intervals along the length direction Z of the knife body to achieve multi-directional fixation of the knife body in the length direction Z, with higher fixation firmness and more uniform force. Since the force-applying end of the knife handle 3 when the user holds the knife handle 3 in his hand to process food is the end of the knife handle 3 close to the blade 11, by setting the first connection hole 1211 with a slightly smaller aperture on the side of the knife handle 12 close to the blade 11, the strength of the connection member 4 with the first connection hole 1211 is higher than the strength of the connection member 4 with the other holes, thereby improving the stability of the end of the knife handle 3 close to the blade 11, so that the knife handle 3 has a stronger pressure-bearing capacity and is not easy to loosen.

[0058] More optionally, if Figure 2 As shown, the knife handle 3 includes a first clip 31 and a second clip 32 respectively located on both sides of the knife handle 12, and the connecting member 4 is configured as a sub-rivet 42 structure. Specifically, the connecting member 4 includes a sub-rivet 41 and a female rivet 42 that are plugged into each other. When assembling the knife handle 3, the first clip 31 and the second clip 32 are first aligned on both sides of the knife handle 12, and then the sub-rivet 41 and the female rivet 42 are respectively placed at the corresponding connection holes 121 on both sides of the first clip 31 and the second clip 32. The first clip 31 and the second clip 32 are locked by plugging and tightening the sub-rivet 41 and the female rivet 42, so that the knife handle 3 is stably connected to the knife handle 12.

[0059] As an optional embodiment of the present application, the blade 1 is made of titanium alloy. Titanium alloy has the advantages of high thermal strength, good corrosion resistance, good low temperature performance, biocompatibility, etc. The blade 1 made of titanium alloy also has the advantages of high strength and good corrosion resistance, and is not easy to react chemically with food when used as a table knife, ensuring the health of the food.

[0060] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0061] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0062] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A knife, comprising a knife body, wherein the knife body comprises a blade, characterized in that: The tool also includes a blade reinforcement, the blade has a cutting edge, the blade reinforcement is attached to the cutting edge and covers at least part of the surface of the cutting edge, so that the blade reinforcement constitutes a force-bearing part when the tool cuts an object, and the hardness of the blade reinforcement is greater than that of the blade.

2. The tool according to claim 1, characterized in that The blade reinforcement is provided on at least one side of the blade and covers the blade portion on the corresponding side; And / or, along the length direction of the blade, the portion of the blade covered by the blade reinforcement occupies more than half of the entire blade.

3. The tool according to claim 1, characterized in that The blade is made of titanium or titanium alloy; Alternatively, the blade includes a substrate and a surface layer covering the surface of the substrate, and the surface layer is made of titanium or titanium alloy.

4. The tool according to claim 2 or 3, characterized in that The blade reinforcement members are arranged on both sides of the blade portion. The blade reinforcement members are structured to have a V-shaped cross section, and both sides of the blade reinforcement members are inclined surfaces.

5. The tool according to claim 4, characterized in that The maximum width of the V-shape is Amm, the height of the V-shape is Bmm, A and B satisfy 0.3≤A / B≤0.6, and B satisfies 2.5<B<8.

6. The tool according to claim 4, characterized in that The blade portion comprises a plane, the plane is arranged at the tip of the blade portion, and the plane is parallel to the thickness direction of the blade body.

7. The tool according to claim 1, characterized in that The blade body also includes a handle, which is fixedly connected to the blade; the tool also includes a handle and a connecting piece, the handle is provided with at least two connecting holes of different shapes and / or sizes, and the connecting piece is respectively passed through the handle and the connecting holes to fix the handle and the handle.

8. The tool according to claim 7, characterized in that The connection holes include a first connection hole and a second connection hole. Both the first connection hole and the second connection hole are circular holes, and the hole diameter of the first connection hole is smaller than the hole diameter of the second connection hole.

9. The tool according to claim 8, characterized in that The connecting holes include more than three, and the more than three connecting holes are arranged along the length direction of the knife handle, and the hole diameter of the connecting hole close to the blade body is smaller than the hole diameter of the connecting hole away from the blade body.

10. The tool according to claim 7, characterized in that The knife handle comprises a first clip and a second clip respectively located on both sides of the knife handle, and the connecting member is configured as a parent-child rivet structure.

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