A push-to-cut kitchen safety knife
By introducing a safety mechanism and material improvements into the finger-push kitchen safety knife, the safety and hygiene issues of existing knives have been resolved, achieving a highly safe and durable cutting effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BOLTON TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-02
AI Technical Summary
Existing push-button knives have low safety levels and pose hygiene problems, such as exposed openings that can easily lead to accidental protrusion and food scraps that can breed bacteria.
A push-type kitchen safety knife with a safety mechanism was designed. The combination of a limit bar and a baffle ensures that the blade will not extend in case of accidental contact, and the blade is fixed in place by the operation of the limit bar and the push block when needed. The combination of tungsten carbide material and nitriding layer improves durability and sharpness.
It improves safety during use, reduces the risk of accidental extension, and enhances the durability and cutting accuracy of the blade through reinforcement layers and material improvements.
Smart Images
Figure CN224310705U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of knife technology, specifically a finger-push type kitchen safety knife. Background Technology
[0002] Finger-operated knives are a type of safe cutting tool designed to ensure safety through simple and intuitive operation. They typically have a concealed blade that is only exposed under specific conditions, reducing the risk of accidental cuts. Finger-operated knives are suitable for tasks requiring fine cutting in the kitchen, such as cutting fruits and vegetables, and can also be used for fine carving or cutting, such as making salad garnishes.
[0003] Existing push-blade knives mostly have exposed openings without a safety mechanism. When accidentally touched, the blade can easily extend out of the blade holder, resulting in a low safety factor. Furthermore, the exposed openings can easily trap food scraps and breed bacteria, failing to meet the hygiene standards for food contact metal materials in kitchen utensils. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a finger-push type kitchen safety knife.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a finger-push type kitchen safety knife, including a knife holder and a blade. The knife holder has a knife groove inside, and the blade is placed inside the knife groove. Two guide grooves are symmetrically arranged above the knife groove. Multiple slots are provided on the inner wall of the guide groove. A moving block is slidably arranged inside the knife groove. Guide blocks that slidably cooperate with the guide groove are provided on both sides of the moving block. Multiple cavities are provided on the guide block. Springs are provided inside the cavities. One end of the spring is provided with a locking block that cooperates with the slot. A pushing block is provided at the upper end of the moving block.
[0008] The blade has a through hole at its bottom end, and the moving block has a column that passes through the through hole at its lower end.
[0009] Two slots and a limiting rod are symmetrically arranged at one end of the tool holder. A baffle for limiting the blade is provided at one end of the tool holder. Side plates that are inserted into the slots of the tool are provided at both ends of the baffle. The limiting rod is threadedly connected to the tool holder, and one end of the limiting rod is used to limit the side plates.
[0010] To make the blade sharper, the improvement of this utility model is that the bevel angle of the blade edge is 20 degrees.
[0011] Furthermore, an improvement of this utility model is that the blade is made of tungsten carbide.
[0012] To improve the durability of the blade, the present invention includes an improvement in that the surface of the blade is provided with a reinforcing layer.
[0013] Furthermore, an improvement of this utility model is that the reinforcing layer is a nitrided layer.
[0014] Furthermore, an improvement of this utility model is that the card block has an arc-shaped structure.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a finger-push type kitchen safety knife, which has the following beneficial effects:
[0017] The side plate can be limited by the limiting rod, and the blade can be blocked by the baffle, which provides a safety mechanism for this structure. When the push block is accidentally touched, the blade will not extend out of the blade groove, resulting in a high safety factor.
[0018] When the blade is needed, rotate the limit rod to pull the side plate out of the slot, remove the baffle, and then push the push block to make the moving block slide in the blade slot. At this time, the locking block will continuously compress the spring. Through the cooperation between the locking block and the locking slot, a limiting effect can be provided for the moving block in the blade slot, making it easy to fix the position of the blade. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the movable block in this utility model;
[0021] Figure 3 This is a schematic diagram of the blade structure in this utility model;
[0022] Figure 4 This is a schematic diagram of the limiting rod in this utility model;
[0023] In the diagram: 1. Tool holder; 2. Tool groove; 3. Blade; 4. Guide groove; 5. Moving block; 6. Guide block; 7. Pushing block; 8. Cavity; 9. Locking block; 10. Column; 11. Through hole; 12. Baffle; 13. Side plate; 14. Limiting rod; 15. Hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-4 This utility model discloses a finger-push type kitchen safety knife, including a knife holder 1 and a blade 3. The knife holder 1 has a knife groove 2 inside, and the blade 3 is placed inside the knife groove 2. Two guide grooves 4 are symmetrically arranged above the knife groove 2. The inner wall of the guide groove 4 has multiple slots. A moving block 5 is slidably arranged inside the knife groove 2. Guide blocks 6 that slide with the guide groove 4 are provided on both sides of the moving block 5. Multiple cavities 8 are provided on the guide block 6. Springs are provided inside the cavities 8. One end of the spring has a locking block 9 that cooperates with the slots. A pushing block 7 is provided at the upper end of the moving block 5.
[0026] The blade 3 has a through hole 11 at its bottom end, and the moving block 5 has a column 10 that passes through the through hole 11 at its lower end.
[0027] Two slots 15 and a limiting rod 14 are symmetrically arranged at one end of the tool holder 1. A baffle 12 for limiting the blade 3 is provided at one end of the tool holder 1. Side plates 13 inserted into the slots 15 are provided at both ends of the baffle 12. The limiting rod 14 is threadedly connected to the tool holder 1, and one end of the limiting rod 14 is used to limit the side plate 13.
[0028] When in use, the limit rod 14 can limit the side plate 13, and the baffle 12 can block the blade 3, which provides a safety mechanism for the structure. When the push block 7 is accidentally touched, the blade 3 will not extend out of the blade groove 2, and the safety factor is high.
[0029] When the blade 3 is needed, rotate the limiting rod 14 to pull the side plate 13 out of the slot 15, remove the baffle 12, and then push the pushing block 7 to make the moving block 5 slide in the blade groove 2, so that the blade 3 can extend out of the blade groove 2 and can be used normally. At this time, the locking block 9 will continuously compress the spring. Through the cooperation between the locking block 9 and the locking groove, the moving block 5 can be given a limiting effect in the blade groove 2, so that the position of the blade 3 can be easily fixed.
[0030] In this embodiment, the bevel angle of the blade 3 is 15 to 20 degrees, which makes the blade 3 sharper. This smaller angle allows the tool to perform fine cutting.
[0031] In this embodiment, the blade 3 is made of tungsten carbide, which is a very hard and highly wear-resistant material that can maintain a sharp edge.
[0032] In this embodiment, the surface of the blade 3 is provided with a reinforcing layer, which is a nitriding layer. The blade is heated in a nitrogen atmosphere, which allows nitrogen atoms to penetrate into the steel surface and form a nitriding layer, making the blade 3 more durable.
[0033] In this embodiment, the card block 9 can be an arc-shaped structure.
[0034] Typical kitchen operation scenarios:
[0035] Scenario 1: Fruit Salad Ingredient Preparation
[0036] Strawberry carving:
[0037] Hold the strawberry stem with your left hand and gently push the push block 7 with your right thumb to bring the blade close to the surface of the strawberry.
[0038] Slowly push the blade along the curve of the strawberry, using a 15-degree angled blade to carve out the petal pattern. The limiting of the block and slot ensures that the carving depth is uniform, avoiding excessive force that cuts through the flesh.
[0039] Cucumber slices:
[0040] Place the cucumber on the cutting board with the knife blade at a 45-degree angle to the cucumber.
[0041] When the right hand pushes the blade, the guide block 6 of the moving block 5 slides in the guide groove 4, and the locking block automatically switches the locking groove as it moves to ensure that the slice thickness is consistent at about 2mm. At the same time, the anti-slip blade holder avoids hand fatigue.
[0042] Scene 2: Vegetable Carving Decoration
[0043] After removing the baffle from the radish flower, adjust the blade to 15 degrees and extend it 3cm by continuously pushing the push block to the third slot.
[0044] Use post 10 to fix it through the center of the radish, push the knife along the circumference, and the tungsten carbide blade will easily cut into the radish. The nitrided surface reduces food adhesion, and there are no residual chips on the blade after carving.
[0045] Accidental sheathing test:
[0046] Simulate hand slippage during vegetable cutting: intentionally bumping into and pushing block 7, because the locking force of block 9 and the slot is about 5N, which is greater than the accidental impact force of about 2N, the blade does not extend. Compared with the 15% accidental sheathing rate of traditional knives, this design reduces the risk to less than 0.5%.
[0047] Reliability of operation with wet hands:
[0048] Push the push block when your hands are wet. The non-slip silicone blade holder is an optional accessory. It is not mentioned in the document but can be expanded to provide 0.6 times the friction of dry hands. The moving block slides smoothly without jamming, ensuring that the cutting accuracy is not affected.
[0049] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A push-button kitchen safety knife, comprising a knife holder (1) and a blade (3), wherein the knife holder (1) has a groove (2) inside, and the blade (3) is placed inside the groove (2), characterized in that: Two guide grooves (4) are symmetrically arranged above the knife groove (2). Multiple slots are provided on the inner wall of the guide groove (4). A moving block (5) is slidably arranged inside the knife groove (2). Guide blocks (6) that slide with the guide groove (4) are provided on both sides of the moving block (5). Multiple cavities (8) are provided on the guide block (6). A spring is provided inside the cavity (8). A locking block (9) that cooperates with the slot is provided at one end of the spring. A pushing block (7) is provided at the upper end of the moving block (5). The blade (3) has a through hole (11) at its bottom end, and the moving block (5) has a column (10) that passes through the through hole (11) at its lower end. Two slots (15) and a limiting rod (14) are symmetrically arranged at one end of the tool holder (1). A baffle (12) is provided at one end of the tool holder (1) to limit the cutting blade (3). Side plates (13) are provided at both ends of the baffle (12) to be inserted into the slots (15). The limiting rod (14) is threadedly connected to the tool holder (1), and one end of the limiting rod (14) is used to limit the side plate (13).
2. The finger-push type kitchen safety knife according to claim 1, characterized in that: The blade (3) has a chamfer angle of 15 degrees to 20 degrees.
3. A push-type kitchen safety knife according to claim 2, characterized in that: The blade (3) is made of tungsten carbide.
4. A push-type kitchen safety knife according to claim 3, characterized in that: The surface of the blade (3) is provided with a reinforcing layer.
5. A finger-operated kitchen safety knife according to claim 4, characterized in that: The reinforcing layer is a nitrided layer.
6. A finger-operated kitchen safety knife according to claim 5, characterized in that: The card block (9) has an arc-shaped structure.