Domestic knife with hand protection structure

Abstract

The application relates to the technical field of household cutters, in particular to a household cutter with a hand protection structure, which comprises a blade part and a holding part. The non-sharp side of the blade part is embedded in the holding part, and the cutting function is realized through the sharp side; the holding part comprises a handle body and a fixed limiting structure, the handle body is sequentially provided with a hand protection position, an auxiliary holding position and a main holding position from the sharp side to the non-sharp side of the blade part, the hand protection position is in a protruding shape and is in a positive circular arc shape close to the sharp side, the auxiliary holding position is concave and the angle gradually decreases, and the main holding position is in a reverse circular arc shape away from the sharp side and gradually expands in width; the fixed limiting structure comprises a limiting column, a limiting hole and a fixing hole, the limiting column is inserted and connected in an interference mode to realize firm fixing. The application can significantly improve the holding comfort, the use safety and the firmness of the blade part connection, and meets the daily use demand of families.

Description

Technical Field

[0001] This utility model relates to the field of household knife technology, specifically to a household knife with a hand guard structure. Background Technology

[0002] Household knives, as indispensable tools in daily life, are widely used in food processing, cooking, and other household chores. Traditional household knives typically consist of a blade and a grip; the blade is used for cutting, while the grip provides ease of use. However, existing knives have several design shortcomings, particularly in the ergonomic design of the grip and the blade's fixing structure. The grip of traditional knives often lacks reasonable functional partitioning, leading to hand slippage or fatigue during use, affecting operational stability and comfort.

[0003] Furthermore, existing methods of securing the blade to the grip often employ simple embedding or adhesive structures. These connections are prone to loosening after prolonged use, potentially leading to the blade detaching and posing a safety hazard. Additionally, traditional knives typically have a relatively uniform blade thickness design, failing to adequately consider the gradual transition from non-cutting to cutting surfaces, thus impacting cutting efficiency and blade durability. Therefore, there is an urgent need for a household knife that improves grip comfort, enhances blade stability, and optimizes blade structure design to address these issues and enhance the user experience. Utility Model Content

[0004] This invention addresses the shortcomings of existing household knives in terms of grip comfort, safety, and the secure connection between the blade and the grip by proposing a household knife with a hand guard structure. Through optimized structural design, this knife significantly improves the user experience and enhances overall performance.

[0005] This utility model provides a household knife with a handguard structure, including a blade and a grip. One end of the non-sharp side of the blade is embedded in the grip, allowing for cutting via the sharp side of the blade. The grip further includes a handle and a fixing and limiting structure. The fixing and limiting structure penetrates the grip and inserts into the non-sharp side of the blade to limit and fix the blade. The handle body is provided with a hand guard, an auxiliary grip, and a main grip from the sharp side of the blade to the non-sharp side. The specific design of each part is as follows: The hand guard protrudes away from the blade, and its end near the sharp side of the blade is a rounded arc to protect the user's fingers and prevent them from contacting the sharp edge when sliding; the auxiliary grip is recessed into the surface of the handle body, and its concave angle gradually decreases from the cutting edge of the blade to the non-cutting edge, thereby providing the user with additional grip support and enhancing operational stability; the main grip is a reversed rounded arc at the end away from the sharp side of the blade, and its longitudinal cross-sectional width gradually increases from the cutting edge of the blade to the non-cutting edge, forming an ergonomic main grip area to reduce hand fatigue during long-term use.

[0006] Furthermore, the design of the fixed limiting structure is one of the key innovations of this utility model. The fixed limiting structure includes a limiting post, a limiting hole, and a fixing hole. The limiting hole, located on the handle, is a converging frustum shape to ensure a tight fit after the limiting post is inserted. The fixing hole is located on the non-sharp side of the cutting edge and corresponds one-to-one with the limiting hole, used to receive the insertion of the limiting post. The limiting post is inserted into the limiting hole and the fixing hole, and a secure connection between the cutting edge and the grip is achieved through an interference fit. This multi-point fixing method not only enhances the overall strength of the tool but also effectively prevents the cutting edge from loosening or falling off during use.

[0007] In particular, the thickness design of the cutting edge also reflects the technological innovation of this invention. The thickness of the cutting edge gradually decreases from the non-sharp side to the sharp side, and also gradually decreases from the non-cutting area to the cutting area. This thickness variation design optimizes cutting performance and reduces the overall weight of the tool while ensuring the strength of the cutting edge, making it easier for the user to operate.

[0008] Furthermore, the shape of the handle is also an important improvement of this invention. The handle has rounded surfaces on both the cutting side and the non-cutting side of the blade, further improving grip comfort and making the knife more aesthetically pleasing.

[0009] Furthermore, the combined rounded design of the handguard and the main grip area creates an ergonomic grip curve, reducing hand fatigue during prolonged use. The longitudinal width of the main grip area gradually widens from the cutting edge to the non-cutting edge, allowing users to apply force more naturally and improving operational stability.

[0010] Furthermore, this invention achieves multi-point fixation of the blade within the grip by distributing multiple limiting posts, limiting holes, and fixing holes. This design not only enhances the overall strength of the knife but also improves its durability, meeting the high-frequency needs of daily household use.

[0011] The beneficial effects of this utility model are as follows:

[0012] This invention significantly improves user comfort through the rational layout and shape design of the hand guard, auxiliary grip, and main grip. The protruding design of the hand guard effectively prevents fingers from slipping towards the sharp side of the blade, reducing the risk of accidental injury. The cooperation of the limiting post, limiting hole, and fixing hole in the fixed limiting structure achieves a firm connection between the blade and the grip, preventing the blade from loosening or falling off during use. The thickness design of the blade ensures both strength and excellent cutting performance, meeting the needs of daily household use.

[0013] In summary, this utility model provides a household knife with a reasonable structure, safe use, and comfortable grip, possessing high practical value and promising market prospects. Through the implementation of the above technical solution, this utility model solves the deficiencies of existing knives in terms of grip comfort, safety, and the firmness of the connection between the blade and the grip, providing users with a superior user experience. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional front view schematic diagram of the present invention;

[0016] Figure 3 This is a bottom view structural diagram of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the present invention with one side of the handle removed;

[0018] Figure 5 This is an exploded structural diagram of the present invention;

[0019] In the diagram, 1-blade; 2-hand guard; 3-auxiliary grip; 4-main grip; 5-positive arc shape; 6-negative arc shape; 7-limiting post; 8-limiting hole; 9-fixing hole. Detailed Implementation

[0020] This utility model relates to a household knife with a hand guard structure, the structural design and functional implementation of which are centered on improving the user experience. The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings to ensure the operability and practicality of the technical solution.

[0021] like Figure 1-5 As shown, this utility model provides a household knife with a hand guard structure, including a blade 1 and a grip. One end of the blade 1 (non-sharp side) is embedded in the grip, allowing for cutting using the sharp side of the blade 1. The grip consists of a handle and a fixing and limiting structure. The fixing and limiting structure penetrates the grip and inserts into the non-sharp side of the blade 1, thereby limiting and fixing the blade 1. The handle, from the sharp side to the non-sharp side of the blade 1, sequentially features a hand guard 2, an auxiliary grip 3, and a main grip 4. The hand guard 2 protrudes away from the blade 1, with its end near the sharp side of the blade 1 being a perfect arc 5. This design effectively prevents the user's fingers from slipping towards the sharp side of the blade 1, reducing the risk of accidental injury.

[0022] The auxiliary grip 3 is recessed into the surface of the handle, with its concave angle gradually decreasing from the cutting edge of the blade 1 towards the non-cutting edge. This design provides additional grip support and enhances operational stability. The main grip 4, located away from the sharp side of the blade 1, is a reverse rounded arc 6, with its longitudinal cross-sectional width gradually increasing from the cutting edge of the blade 1 towards the non-cutting edge, forming an ergonomic main grip area and reducing hand fatigue during prolonged use. The handle body has rounded surfaces on both the cutting edge and non-cutting edge sides of the blade 1, further improving grip comfort and enhancing the knife's aesthetic appearance.

[0023] The design of the fixed limiting structure is one of the important innovations of this utility model, and its specific structure is as follows: Figure 2 As shown. The fixed limiting structure includes a limiting post 7, a limiting hole 8, and a fixing hole 9. The limiting hole 8 is formed on the handle body and is in the shape of a frustum that tapers inward to ensure that the limiting post 7 can fit tightly after insertion. The fixing hole 9 is formed on the non-sharp side of the blade 1 and corresponds one-to-one with the limiting hole 8, and is used to receive the insertion of the limiting post 7.

[0024] The limiting pin 7 is inserted into the limiting hole 8 and the fixing hole 9, and a firm connection between the cutting edge 1 and the gripping part is achieved through an interference fit. This multi-point fixing method not only enhances the overall strength of the tool, but also effectively prevents the cutting edge 1 from loosening or falling off during use. Figure 4 Detailed drawings of the limiting post 7 and the fixing hole 9 are shown, clearly demonstrating their specific layout in the grip section. Figure 5 The distribution of multiple limiting posts 7 and fixing holes 9 is further demonstrated to ensure that the blade 1 is fixed at multiple points within the grip.

[0025] The thickness design of the blade 1 reflects the technological innovation of this utility model. For example... Figure 3As shown, the thickness of the cutting edge 1 gradually decreases from the non-sharp side to the sharp side, and also gradually decreases from the non-cutting area to the cutting area. This thickness variation design optimizes cutting performance and reduces the overall weight of the tool while ensuring the strength of the cutting edge 1, making it easier for users to operate.

[0026] The sharp side of the blade 1 is finely polished to ensure smooth cutting, while the non-sharp side of the blade 1 is tightly connected to the grip through a fixed limiting structure to avoid loosening due to long-term use.

[0027] The operating principle of this utility model is as follows: When the user holds the knife, their fingers naturally rest on the hand guard 2, the auxiliary grip 3, and the main grip 4. The circular arc design 5 of the hand guard 2 effectively protects the user's fingers, preventing them from slipping towards the sharp side of the blade 1. The concave design of the auxiliary grip 3 provides the user with additional grip support, especially when performing fine cutting; the user can adjust the position of their fingers to enhance operational stability. The inverted circular arc design 6 of the main grip 4 and the gradually increasing width of its longitudinal section allow the user to apply force more naturally when holding the knife, reducing hand fatigue.

[0028] In addition, the rounded design of the handle further enhances grip comfort, ensuring that users do not feel uncomfortable during prolonged use.

[0029] The working process of the fixed limiting structure is as follows: During assembly, firstly, the non-sharp end of the blade 1 is inserted into the grip, ensuring that the fixing hole 9 is aligned with the limiting hole 8. Then, the limiting post 7 is inserted into the limiting hole 8 and the fixing hole 9, achieving a firm connection through an interference fit.

[0030] The frustum-shaped design of the limiting hole 8 ensures a tight fit after the limiting post 7 is inserted, preventing loosening. The distribution of multiple limiting posts 7 and fixing holes 9 further enhances the overall strength of the tool, meeting the high-frequency needs of daily household use. This multi-point fixing method not only improves the durability of the tool but also effectively prevents the cutting edge 1 from loosening or falling off during use.

[0031] This invention has a wide range of practical applications and is suitable for various cutting tasks in a home kitchen. For example, when cutting vegetables, users can easily make precise cuts by using the hand guard 2 and the auxiliary grip 3 together. When handling harder ingredients, users can utilize the wide design of the main grip 4 to apply more force and ensure smooth cutting. In addition, the varying thickness design of the blade 1 ensures excellent cutting performance while maintaining strength, meeting the needs of daily household use.

[0032] The beneficial effects of this utility model lie in the significant improvement in user grip comfort achieved through the rational layout and shape design of the hand guard 2, auxiliary grip 3, and main grip 4. The protruding design of the hand guard 2 effectively prevents fingers from slipping towards the sharp side of the blade 1, reducing the risk of accidental injury. The cooperation of the limiting post 7, limiting hole 8, and fixing hole 9 in the fixed limiting structure achieves a firm connection between the blade 1 and the grip, preventing the blade 1 from loosening or falling off during use. The thickness design of the blade 1 ensures excellent cutting performance while maintaining strength, meeting the needs of daily household use.

[0033] In summary, this utility model, through specific structural design and functional implementation, solves the deficiencies of existing knives in terms of grip comfort, safety, and the firmness of the connection between the blade and the grip, providing users with a superior user experience. This utility model has a reasonable structure, is safe to use, and offers comfortable grip, possessing high practical value and promising market prospects.

Claims

1. A household knife with a hand guard structure, comprising a blade (1) and a grip, characterized in that... One end of the non-sharp side of the blade (1) is embedded in the grip. The grip includes a handle and a fixing and limiting structure. The fixing and limiting structure passes through the grip and is inserted into the non-sharp side of the blade (1). The handle is provided with a hand guard (2), an auxiliary grip (3) and a main grip (4) in sequence from the sharp side to the non-sharp side of the blade (1). The end of the hand guard (2) near the sharp side of the blade (1) is a circular arc (5). The auxiliary grip (3) is concave on the surface of the handle and the concave angle gradually decreases from the cutting point of the blade (1) to the non-cutting point. The end of the main grip (4) away from the sharp side of the blade (1) is an inverted circular arc (6) and the width of the longitudinal section gradually increases from the cutting point of the blade (1) to the non-cutting point.

2. A household knife with a hand guard structure according to claim 1, characterized in that: The fixed limiting structure includes a limiting post (7), a limiting hole (8), and a fixing hole (9). The limiting hole (8) is opened on the handle and is in the shape of a frustum that tapers inward. The fixing hole (9) is opened on the non-sharp side of the blade (1) and corresponds one-to-one with the limiting hole (8). The limiting post (7) is inserted into the limiting hole (8) and the fixing hole (9) and the connection between the blade (1) and the grip is achieved through an interference fit.

3. A household knife with a hand guard structure according to claim 2, characterized in that: The number of limiting posts (7) and fixing holes (9) are multiple, and the multiple limiting posts (7) and fixing holes (9) are distributed between the non-sharp side of the blade (1) and the gripping part to achieve multi-point fixation.

4. A household knife with a hand guard structure according to claim 1, characterized in that: The thickness of the blade (1) gradually decreases from the non-sharp side to the sharp side and also gradually decreases from the non-cutting area to the cutting area.

5. A household knife with a hand guard structure according to claim 4, characterized in that: The handle body has an arc surface on both the side where the blade (1) is cutting and the side where the blade (1) is not cutting.

6. A household knife with a hand guard structure according to claim 5, characterized in that: The handguard (2) is shaped to protrude away from the blade (1).

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