Cutter

Abstract

The cutter comprises a blade and a handle, the handle is connected to the blade, and the handle comprises a holding part; in the direction that the end, connected with the blade, of the handle points to the end, away from the blade, of the handle, the height H of the holding part in the vertical direction is increased firstly and then decreased, and the thickness W of the holding part in the transverse direction is gradually increased. According to the cutter, the contour shape of the front handle section is similar to the contour shape formed by holding the side, close to the thumb, of the palm in a conventional holding posture, so that the holding comfort is improved, after the hand is held and formed in the front handle section, if the hand tends to slide backwards, the rear handle section can play a role in limiting, and therefore the cutter is prevented from being damaged. And the hand is effectively prevented from sliding backwards, so that the risk that the cutter slips out of the hand is reduced, and the use safety is improved.

Description

Technical Field

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

[0002] Knives are essential tools in daily family life, and they often need to be equipped with multiple knives, such as fruit knives and kitchen knives. Knives usually include blades and handles, and the handle is installed on the handle connected to the rear end of the blade. As the most representative product among kitchen tools, the comfort of using knives directly affects the user experience. Whether it is cutting, slicing, chopping, or other food processing techniques, it is inseparable from a handy and easy-to-use knife, so it is very necessary to study the ergonomics of knives. At present, the knives on the market generally have the following problems: 1. The knives are easy to slip out of the hand when using too much force; 2. The knives are more laborious to use; 3. There are many sharp positions on the non-cutting part of the blade, resulting in a higher risk factor when using the knives; 4. The operation comfort of holding the knife and processing food is not high. Therefore, it is urgent to develop a knife structure that is comfortable to hold, not easy to slip, labor-saving, and safe. Utility Model Content

[0003] The present application provides a cutting tool to improve or solve at least one of the above technical problems to a certain extent.

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

[0005] A knife comprises a blade and a handle, wherein the handle is connected to the blade and comprises a gripping portion; in a direction from an end of the handle connected to the blade to an end of the handle away from the blade, a height dimension H of the gripping portion in the vertical direction first increases and then decreases, and a thickness dimension W of the gripping portion in the horizontal direction gradually increases.

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

[0007] The gripping portion includes a front section of the handle close to the blade and a rear section of the handle away from the blade along the length direction; wherein the cross-section of the front section of the handle is configured such that the vertical height dimension H1 is greater than the horizontal thickness dimension W1, and the cross-section of the rear section of the handle is configured such that the vertical height dimension H2 is less than the horizontal thickness dimension W2.

[0008] The ratio of H1 to W1 is less than or equal to 2, and / or the ratio of W2 to H2 is less than or equal to 1.5.

[0009] 22mm≤H1≤32mm, 12mm≤W1≤25mm, and / or, 22mm≤H2≤28mm, 22mm≤W2≤32mm.

[0010] The length dimension of the front section of the handle is L1, 40≤L1≤60mm, and the length dimension of the rear section of the handle is L2, 40≤L2≤70mm.

[0011] In the portion of the gripping portion where H gradually increases, a surface of the gripping portion facing the direction where the cutting edge of the blade is located is configured as a concave surface that is recessed in a direction away from the cutting edge.

[0012] The handle also includes a hand guard, which is connected to one end of the grip portion close to the blade, and the handle is connected to the blade via the hand guard; the thickness of the hand guard along the transverse direction is greater than the maximum thickness of the blade along the transverse direction.

[0013] The blade includes a first side surface and a second side surface, and the first side surface and the second side surface are arranged opposite to each other along the horizontal direction; the hand guard includes: a first inclined surface connecting the first side surface and the gripping portion; a second inclined surface connecting the second side surface and the gripping portion; wherein the first inclined surface and the second inclined surface are symmetrical, and the axis of symmetry is parallel to the length direction of the handle.

[0014] The extension length of the portion of the hand guard provided with the first and second bevels along the length direction of the handle is H3, and the maximum thickness of the portion of the hand guard provided with the first and second bevels along the thickness direction of the blade is δ, H3 / δ≥4 / 5.

[0015] A height difference H4 is formed between one end of the first inclined surface close to the first side surface and the first side surface, and 0≤H4≤3mm; a height difference H5 is formed between one end of the second inclined surface close to the second side surface and the second side surface, and 0≤H5≤3mm.

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

[0017] 1. The tool provided in the present application can be grasped by the user with the palm of the hand to perform cutting operations. Based on the consideration of the user's conventional holding posture of the handle during cutting (such as finger-pinching holding posture and mallet holding posture), the holding portion is constructed into the above shape so that the contour shape of the holding portion is similar to the contour shape formed by the palm in the conventional holding posture, thereby helping to improve the holding comfort.

[0018] Among them, in terms of the consideration of the vertical height dimension H, since the direction of the force applied by the palm on the handle is mainly vertical, if the shape and structure of the handle in the vertical direction can better adapt to the palm, it will be more comfortable; based on the consideration of the palm, the length of the middle finger is generally longer than the index finger, and the lengths of the middle finger, ring finger and little finger decrease in sequence. Based on the above finger sizes, in the gripping state, the elliptical outline formed by the part of the palm from the index finger to the middle finger tends to gradually increase, and the elliptical outline formed by the part of the palm from the middle finger to the little finger tends to gradually decrease. Based on the above reasons, the vertical height dimension H of the gripping part first increases and then decreases, which just adapts to the changing law of the elliptical shape formed by the palm gripping, so that the handle is well adapted to the palm, making the grip more comfortable.

[0019] As for the consideration of the transverse thickness dimension W, when holding the handle and applying force, the palm has a tendency to slide toward the end of the handle away from the blade, and the elliptical outline formed by the palm from the middle finger to the little finger tends to gradually shrink. Therefore, the gripping portion is constructed so that the thickness dimension W in the transverse direction gradually increases. The changing trend of W is just opposite to the changing trend of the elliptical outline shape formed by the palm, thereby resisting the palm from sliding toward the end of the handle away from the blade, effectively preventing the hand from sliding backwards, thereby reducing the risk of the knife slipping out of the hand and improving the safety of use.

[0020] 2. As an optional method of the present application, the front section of the handle is constructed such that the vertical height dimension is greater than the horizontal thickness dimension. This is because when the hand is holding the handle, the palm holding the front section of the handle forms an elliptical contour with the major axis along the vertical direction and the minor axis along the horizontal direction. Therefore, the shape of the front section of the handle is constructed such that the vertical height dimension is greater than the horizontal thickness dimension, which just fits the elliptical contour formed by the palm. As for the rear section of the handle, since the horizontal width of the gripping portion gradually increases from the front section of the handle to the rear section of the handle, the horizontal width of the rear section of the handle will be larger, which may lead to a larger cross-sectional perimeter of the rear section of the handle; while the corresponding ring finger and little finger holding the rear section of the handle are shorter, the perimeter of the elliptical contour formed by the grip is smaller, and this contradictory change trend may cause discomfort when holding. Therefore, the height dimension of the rear section of the handle is adaptively made smaller, so that the perimeter of the cross section of the rear section of the handle can be controlled within an appropriate range as much as possible, making the gripping area of ​​the ring finger and little finger more comfortable, while not affecting the anti-slip effect of the handle.

[0021] 3. As a preferred embodiment of the present application, by making the ratio of H1 to W1 less than or equal to 2, the ratio of W2 to H2 less than or equal to 1.5, and by making 22mm≤H1≤32mm, 12mm≤W1≤25mm, 22mm≤H2≤28mm, 22mm≤W2≤32mm in the preferred embodiment, the front section and the rear section of the handle can match the shape of the palm in the holding state as much as possible, thereby improving the holding comfort and enabling the rear section of the handle to better limit the backward sliding of the palm.

[0022] 4. As a preferred embodiment of the present application, in the part where the H gradually increases, the surface of the gripping portion facing the direction of the blade of the blade is constructed as a concave surface that is concave in the direction away from the blade. Specifically, the height dimension of the front section of the handle gradually increases and then gradually decreases in the vertical direction from the end of the front section of the handle close to the blade to the direction of the rear section of the handle, and the area between the position of the maximum height dimension of the front section of the handle and the blade forms an upward concave surface. When the hand holds the handle, the fingers can be placed in the concave surface, and the position of the maximum height dimension of the front section plays a limiting role in preventing the fingers placed in the concave surface from sliding backward. The height dimension of the maximum height dimension of the front section of the handle gradually decreases towards the rear section of the handle, and then is close to the contour shape formed by the side of the palm close to the little finger, which makes the grip comfortable. Moreover, the closer the height dimension of the front section of the handle is to the rear section of the handle, the more it fits with the height dimension of the rear section of the handle, so that the front section of the handle and the rear section of the handle are smoothly connected, and the gripping portion as a whole has no discomfort. The end of the rear section of the handle connected to the front section of the handle points in the direction of the other end, and the thickness of the rear section of the handle gradually increases in the lateral direction, that is, the width of the rear section of the handle gradually increases from front to back. This gradual structural design makes the rear section of the handle more restrictive on the hand as it is closer to the back, effectively increasing the anti-slip effect of the handle.

[0023] 5. As a preferred embodiment of the present application, the handle is connected to the blade via a hand guard, which can serve as a buffer structure between the gripping portion and the blade to prevent the handle from being abruptly connected to the blade, and the first bevel smoothly connects the first side surface and the front section of the handle, and the second bevel smoothly connects the second side surface and the front section of the handle, effectively preventing the discomfort caused by a huge thickness difference from the handle to the blade due to the large thickness of the gripping portion and the small thickness of the blade, and also preventing the discomfort caused by holding. Moreover, for the pinching gripping posture, the thumb and index finger can press on the first bevel and the second bevel respectively, thereby improving the gripping and operating comfort of the thumb and index finger. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] Figure 1 An axonometric view of a tool provided in an embodiment of the present application;

[0026] Figure 2 A front view of a tool provided in an embodiment of the present application;

[0027] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0028] Figure 4 for Figure 2 Cross-section at the middle BB;

[0029] Figure 5 A top view of a tool provided in an embodiment of the present application;

[0030] Figure 6 An axonometric view of a tool provided in accordance with a second embodiment of the present application;

[0031] Figure 7 A side view of the handle of a knife provided in accordance with the second embodiment of the present application.

[0032] List of parts and reference numerals:

[0033] 1 blade, 11 blade head, 12 blade root, 13 first side surface, 14 blade back;

[0034] 2 handle, 21 front section of the handle, 22 rear section of the handle, 23 hand guard, 231 first inclined surface, 232 transition surface, 233 pressing surface, 234 anti-slip groove, 24 concave surface. DETAILED DESCRIPTION

[0035] 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.

[0036] 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 scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0037] In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", "longitudinal", etc., indicating orientations or positional relationships 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.

[0038] 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.

[0039] 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.

[0040] In the embodiment of the present application, a cutting tool is provided. For the convenience of explanation and understanding, the following contents provided in the present application are all described based on the illustrated product structure. Of course, those skilled in the art can understand that the above structure is only used as a specific example and schematic description, and cannot constitute a specific limitation on the technical solution provided in the present application.

[0041] Reference Figures 1 to 5 As shown, a knife provided in the present application includes a blade 1 and a handle 2, wherein the handle 2 is connected to the blade 1, and the handle 2 includes a gripping portion; in a direction from one end of the handle 2 connected to the blade 1 to the end of the handle 2 away from the blade 1, a height dimension H of the gripping portion in the vertical direction first increases and then decreases, and a thickness dimension W of the gripping portion in the horizontal direction gradually increases.

[0042] With the tool provided in the present application, the user can grasp the handle 2 with the palm of his hand to perform cutting operations. Based on the consideration of the user's conventional holding posture of the handle during cutting (such as the pinching holding posture and the mallet holding posture; the pinching holding posture mainly involves the middle finger, ring finger and little finger holding the handle, with the thumb extending toward the blade head and pressing on one side of the blade, and the index finger pressing on the other side of the blade with the side facing the thumb; the mallet holding posture mainly involves the human hand holding the handle in a fist posture, at which time the fingers do not contact the two sides of the blade), the holding portion is constructed in the above shape so that the contour shape of the holding portion is similar to the contour shape formed by the palm in the conventional holding posture, thereby helping to improve the holding comfort.

[0043] Among them, in terms of the consideration of the vertical height dimension H, since the direction of the force applied by the palm to the handle 2 is mainly along the vertical direction, if the shape structure of the handle 2 in the vertical direction can better adapt to the palm, it will be more comfortable; based on the consideration of the palm, the length of the middle finger is generally longer than the index finger, and the lengths of the middle finger, ring finger and little finger decrease in sequence. Based on the above finger sizes, in the gripping state, the elliptical outline formed by the part of the palm from the index finger to the middle finger tends to gradually increase, and the elliptical outline formed by the part of the palm from the middle finger to the little finger tends to gradually decrease. Based on the above reasons, the vertical height dimension H of the gripping part first increases and then decreases, which just adapts to the changing law of the elliptical shape formed by the palm gripping, so that the handle 2 is well adapted to the palm, making the grip more comfortable.

[0044] As for the consideration of the transverse thickness dimension W, when holding the handle 2 and applying force, the palm has a tendency to slide toward the end of the handle 2 away from the blade 1, and the elliptical contour formed by the palm from the middle finger to the little finger tends to gradually shrink. Therefore, the gripping portion is constructed so that the thickness dimension W in the transverse direction gradually increases, and the changing trend of W is just opposite to the changing trend of the elliptical contour shape formed by the palm, thereby resisting the palm from sliding toward the end of the handle 2 away from the blade 1, effectively preventing the hand from sliding backwards, thereby reducing the risk of the knife falling out of the hand and improving the safety of use.

[0045] Specifically, the grip portion includes a handle front section 21 close to the blade 1 and a handle rear section 22 away from the blade 1 along the length direction, wherein the cross section of the handle front section 21 is configured such that the vertical height dimension H1 is greater than the horizontal thickness dimension W1, and the cross section of the handle rear section 22 is configured such that the vertical height dimension H2 is less than the horizontal thickness dimension W2. Figure 2 As shown, the X direction indicated by the arrow is the length direction of the handle 2, and the Y direction indicated by the arrow is the vertical direction. Figure 5 As shown, the Z direction indicated by the arrow is the horizontal direction. Figure 3 The cross section at one position of the handle front section 21 is shown in FIG. 1 , where H1 is greater than W1. Of course, the cross section at any position of the handle front section 21 must ensure that H1 is greater than W1. Figure 4 The figure shows a cross section at one position of the handle rear section 22, where W2 is greater than H2. Of course, the cross section at any position of the handle rear section 22 must ensure that W2 is greater than H2. Figure 2 The dashed line N1 shown in FIG. 1 schematically represents the dividing line between the front handle section 21 and the rear handle section 22 .

[0046] The front section 21 of the handle is constructed such that the vertical height dimension is greater than the horizontal thickness dimension. This is because when the hand is holding the handle 2, the palm holding the front section 21 forms an elliptical contour with the major axis along the vertical direction and the minor axis along the horizontal direction. Therefore, the shape of the front section 21 of the handle is constructed such that the vertical height dimension is greater than the horizontal thickness dimension, which is just adapted to the elliptical contour formed by the palm. As for the rear section 22 of the handle, since the horizontal width of the gripping portion gradually increases from the front section 21 of the handle to the rear section 22 of the handle, the horizontal width of the rear section 22 of the handle will be larger, which may lead to a larger cross-sectional perimeter of the rear section 22 of the handle; while the corresponding ring finger and little finger holding the rear section 22 of the handle are shorter, the perimeter of the elliptical contour formed by holding is smaller, and this contradictory change trend may cause discomfort in holding. Therefore, by adaptively making the height dimension of the rear section 22 of the handle smaller, the perimeter of the cross-sectional perimeter of the rear section 22 of the handle can be controlled as much as possible within an appropriate range, so that the gripping area of ​​the ring finger and little finger is more comfortable to hold, while not affecting the anti-slip effect of the handle.

[0047] As a preferred embodiment of the present application, the ratio of H1 to W1 is less than or equal to 2. As another preferred embodiment of the present application, the ratio of W2 to H2 is less than or equal to 1.5. Based on the fact that H1 is greater than W1 and W1 is greater than H2, 1

[0048] As a preferred implementation of the present application, Figure 2 ​As shown, the length dimension of the handle front section 21 is L1, 40≤L1≤60mm, and the length dimension of the handle rear section 22 is L2, 40≤L2≤70mm. By limiting the size of the handle front section 21 and the handle rear section 22, it is helpful to avoid the total length of the grip formed by the connection of the two being too short, so that part of the human hand cannot be held on the grip and affect the operating feel, and it is also helpful to avoid the total length of the grip formed by the connection of the two being too long, so that it is difficult for the human hand to select a suitable grip position to obtain the best operating comfort and force application position. In a preferred embodiment, the total length of the grip formed by the connection of the handle front section 21 and the handle rear section 22 can be controlled within 100mm-130mm, and based on the limiting condition that the total length of the grip is 100mm-130mm, the appropriate L1 value and L2 value are selected within the range of 40mm-60mm and the range of 40mm-70mm, respectively, for example, the L1 value is 50mm, and the L2 value is 60mm.

[0049] As a preferred implementation of the present application, Figure 2 As shown, in the portion where H gradually increases, the surface of the gripping portion facing the direction of the blade 1 is constructed as a concave surface 24 that is recessed in the direction away from the blade. Specifically, the height dimension of the handle front section 21 gradually increases and then gradually decreases in the vertical direction from the end of the handle front section 21 close to the blade 1 to the direction of the handle rear section 22; the thickness dimension of the handle rear section 22 gradually increases in the horizontal direction from the end of the handle rear section 22 connected to the handle front section 21 to the other end. Specifically, Figure 2 The position of the AA section shown in the figure is the position where the handle front section 21 has the maximum height dimension. Since the height dimension of the handle front section 21 gradually increases and then gradually decreases in the direction from the end of the handle front section 21 close to the blade 1 to the handle rear section 22, the maximum height dimension of the handle front section 21 is located in the area between the blade 1 ( Figure 2 The left area of ​​the position of the AA section in the middle) forms a concave surface 24 that is concave upwards. When the handle 2 is held in the palm of the hand, the fingers can be placed in the concave surface 24. The position of the maximum height dimension of the front section has a limiting effect on preventing the fingers placed in the concave surface 24 from sliding backwards. The position of the maximum height dimension of the front section 21 of the handle is toward this distance of the rear section 22 of the handle ( Figure 2The height dimension of the right area of ​​the position of the middle AA section) gradually decreases, and then becomes similar to the contour shape formed by the palm of the hand near the little finger, which makes the grip comfortable. In addition, the closer the height dimension of the front section 21 of the handle is to the rear section 22 of the handle, the more it fits the height dimension of the rear section 22, so that the front section 21 and the rear section 22 can be smoothly connected, and the gripping part as a whole does not feel uncomfortable. In the direction in which the end of the rear section 22 connected to the front section 21 points to the other end, the thickness dimension of the rear section 22 in the transverse direction gradually increases, that is, the width of the rear section 22 from front to back gradually increases. This gradual structural design makes the rear section 22 closer to the back of the handle more obvious in restricting the hand, effectively increasing the anti-slip effect of the handle 2.

[0050] As a preferred implementation of the present application, Figure 1 and Figure 2 As shown, the handle 2 also includes a hand guard 23, which is connected to one end of the gripping portion close to the blade, and the handle 2 is connected to the blade 1 via the hand guard 23; the thickness of the hand guard 23 along the transverse direction is greater than the maximum thickness of the blade 1 along the transverse direction. Based on the conventional design concept of knives, the thickness of the handle 2 is generally much greater than the thickness of the blade 1. Therefore, in this solution, the handle 2 is connected to the blade 1 via the hand guard 23, and the hand guard 23 can serve as a buffer structure between the gripping portion and the blade 1 to prevent the handle 2 from being connected to the blade 1 in a cliff-like manner.

[0051] Furthermore, the blade 1 includes a first side surface 13 and a second side surface, and the first side surface 13 and the second side surface are arranged opposite to each other along the horizontal direction; the hand guard 23 includes a first inclined surface 231 connecting the first side surface 13 and the gripping portion, and a second inclined surface connecting the second side surface and the gripping portion; wherein the first inclined surface 231 and the second inclined surface are symmetrical, and the axis of symmetry is parallel to the length direction of the handle 2. Figure 2 The middle dotted line N2 schematically represents the position where the first bevel 231 is smoothly connected to the first side surface 13. Those skilled in the art will understand that the first bevel 231 connects the first side surface 13 and the front section 21 of the handle, and the second bevel connects the second side surface and the front section 21 of the handle, which effectively prevents the huge thickness difference from the handle 2 to the blade 1 caused by the large thickness of the gripping portion and the small thickness of the blade 1, thereby causing grip discomfort. Moreover, for the pinching grip posture, the thumb and index finger can press on the first bevel 231 and the second bevel respectively, thereby improving the grip and operation comfort of the thumb and index finger.

[0052] As a preferred embodiment of this implementation, Figure 2 and Figure 5As shown, the extension length of the portion of the hand guard 23 provided with the first bevel 231 and the second bevel along the length direction of the handle 2 is H3, and the maximum thickness of the portion of the hand guard 23 provided with the first bevel 231 and the second bevel along the thickness direction of the blade 1 is δ, H3 / δ≥4 / 5. By setting H3 / δ≥4 / 5, the thickness of the first bevel 231 and the second bevel along the thickness direction of the blade 1 is limited within a reasonable range, and the slope of the first bevel 231 and the second bevel is made gentler, effectively preventing the first bevel 231 and the second bevel from causing a huge thickness difference from the grip to the blade 1 due to the excessive slope, thereby causing discomfort when gripping. In a preferred embodiment, δ can be designed to be 18 mm or less than 18 mm. Taking δ as 18 mm as an example, H3 should meet the requirement of not less than 14.4 mm.

[0053] As a preferred embodiment of this implementation, Figure 6 and Figure 7 As shown, there is a height difference H4 between the end of the first inclined surface 231 close to the first side surface 13 and the first side surface 13, 0≤H4≤3mm; there is a height difference H5 between the end of the second inclined surface close to the second side surface and the second side surface, 0≤H5≤3mm. This effectively prevents the first inclined surface 231 from having a large height difference with the first side surface 13 and the second inclined surface from having a large height difference with the second side surface, causing discomfort when holding the device.

[0054] As a preferred embodiment of this implementation, Figure 5 As shown, the hand guard 23 includes a pressing surface 233 connected to the blade back 14 of the blade 1, and the surface of the pressing surface 233 is provided with a plurality of anti-slip grooves 234. Through this arrangement, when the user presses the pressing surface 233 with his fingers during the operation of the knife, the anti-slip grooves 234 can increase the friction between the pressing surface 233 and the fingers, reduce the risk of the fingers slipping off the pressing surface 233, and facilitate the fingers to apply force to the pressing surface 233.

[0055] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0056] 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.

[0057] 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 blade and a handle, wherein the handle is connected to the blade, characterized in that: The handle includes a gripping portion; in the direction of the end of the handle connected to the blade pointing to the end of the handle away from the blade, the vertical height dimension H of the gripping portion first increases and then decreases, and the horizontal thickness dimension W of the gripping portion gradually increases.

2. The tool according to claim 1, characterized in that The gripping portion includes a handle front section close to the blade and a handle rear section away from the blade along the length direction; The cross section of the front section of the handle is configured such that the vertical height dimension H1 is greater than the lateral thickness dimension W1 , and the cross section of the rear section of the handle is configured such that the vertical height dimension H2 is less than the lateral thickness dimension W2 .

3. The tool according to claim 2, characterized in that The ratio of H1 to W1 is less than or equal to 2; And / or, the ratio of W2 to H2 is less than or equal to 1.

5.

4. The tool according to claim 3, characterized in that 22mm≤H1≤32mm, 12mm≤W1≤25mm; And / or, 22mm≤H2≤28mm, 22mm≤W2≤32mm.

5. The tool according to claim 2, characterized in that The length dimension of the front section of the handle is L1, 40≤L1≤60mm, and the length dimension of the rear section of the handle is L2, 40≤L2≤70mm.

6. The tool according to claim 1, characterized in that In the portion of the gripping portion where H gradually increases, a surface of the gripping portion facing the direction where the cutting edge of the blade is located is configured as a concave surface that is recessed in a direction away from the cutting edge.

7. The tool according to any one of claims 1 to 6, characterized in that: The handle further comprises a hand guard, the hand guard being connected to an end of the grip portion close to the blade, and the handle being connected to the blade via the hand guard; The thickness of the hand guard along the transverse direction is greater than the maximum thickness of the blade along the transverse direction.

8. The tool according to claim 7, characterized in that The blade comprises a first side surface and a second side surface, wherein the first side surface and the second side surface are arranged opposite to each other along the transverse direction; The hand guard comprises: a first inclined surface connecting the first side surface and the gripping portion; and a second inclined surface connecting the second side surface and the gripping portion; Wherein, the first inclined surface and the second inclined surface are symmetrical, and the axis of symmetry is parallel to the length direction of the handle.

9. The tool according to claim 8, characterized in that The extension length of the portion of the hand guard provided with the first and second bevels along the length direction of the handle is H3, and the maximum thickness of the portion of the hand guard provided with the first and second bevels along the thickness direction of the blade is δ, H3 / δ≥4 / 5.

10. The tool according to claim 8, characterized in that There is a height difference H4 between the end of the first inclined surface close to the first side surface and the first side surface, 0≤H4≤3mm; A height difference H5 is formed between one end of the second inclined surface close to the second side surface and the second side surface, and 0≤H5≤3mm.

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