Modularized antibacterial metal chopsticks and combination system thereof
By using modular design and standardized interfaces, the chopstick tips and bodies can be replaced independently, solving the problems of the existing chopsticks being made of a single material and having inconsistent interfaces, thus extending the product's lifespan and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 杜春玲
- Filing Date
- 2026-02-25
- Publication Date
- 2026-05-12
AI Technical Summary
Existing chopsticks cannot simultaneously achieve antibacterial properties at the tip and replaceability of the body. They are made of a single material and lack standardized interfaces, resulting in high costs and wasted resources.
Design a modular antibacterial metal chopsticks with a standardized interface that allows the chopstick head and body to be replaced independently. The chopstick head is made of antibacterial medical-grade metal material, while the chopstick body is made of different materials. The connecting structure adopts a uniform protrusion and recess structure.
It enables two-way independent replacement of the chopstick tip and the chopstick body, extends product life, reduces production and consumption costs, ensures hygiene and safety, and forms a standardized industrial chain.
Smart Images

Figure CN122004635A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tableware technology, specifically to a detachable chopstick, and more particularly to a modular antibacterial metal chopstick and its combination system in which the chopstick tip and body can be independently replaced. Background Technology
[0002] The existing chopsticks mainly have the following technical problems: 1. High-end chopsticks made of one piece of material (such as all-titanium chopsticks): Although titanium has excellent properties such as antibacterial, corrosion-resistant and chemically stable, it is expensive to use it to make a pair of chopsticks, and the material is monolithic, which cannot meet users' needs for different feel. 2. Existing detachable chopsticks: Patents such as CN01254950.9 and CN89200615.3 disclose detachable chopsticks with replaceable tips, but their technical solutions are all limited to the "replaceable chopstick tips, permanent chopstick body" model. When the chopstick body is damaged or the user wants to change the material of the chopstick body, the entire pair still needs to be replaced, and the independent replacement of the chopstick body cannot be achieved; 3. Limitations in material selection: Most existing detachable chopsticks are made of bamboo, wood, or ordinary stainless steel, without material optimization design for the key contact part of the chopstick tip, and the antibacterial performance and biocompatibility need to be improved; 4. Lack of a standardized system: The existing detachable chopsticks have inconsistent interfaces, and the chopstick heads and bodies of different brands and models cannot be interchanged, failing to form a modular product system; Therefore, a modular chopsticks system is needed that can ensure the antibacterial and hygienic properties of the chopstick tip, allow for independent bidirectional replacement of the chopstick tip and body, and has a standardized interface. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of existing chopsticks that cannot simultaneously achieve antibacterial properties of the chopstick tip and replaceability of the chopstick body, and to provide a modular antibacterial metal chopstick with independently replaceable chopstick tip and chopstick body.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A modular antibacterial metal chopsticks includes a chopstick head component (1) and a chopstick body component (2), which are connected by a standardized detachable connection structure; Both the chopstick tip component (1) and the chopstick body component (2) are independent and replaceable modules; The chopstick tip component (1) is made of medical-grade metal material with antibacterial and biocompatible properties; The chopstick body component (2) is made of a different material than the chopstick tip component; The connection structure adopts a standardized interface design with uniform specifications, which allows chopstick tip modules and chopstick body modules of different materials and functions to be interchanged and combined.
[0005] The beneficial effects of this invention are as follows: 1. Diverse material selection: The chopstick tip material is not limited to pure titanium. A variety of medical metal materials with antibacterial and biocompatibility can be selected, such as titanium alloys, palladium-based alloys, platinum-based alloys, zirconium-based alloys, tantalum metal, etc. The selection can be flexibly made according to cost, performance and processing requirements, thus expanding the scope of application of the technical solution. 2. Modular System Advantages: Adopting a standardized interface design, it allows for independent replacement of both the chopstick tips and the chopstick body. Users can replace the chopstick tips with different materials or the chopstick bodies with different textures to create personalized combinations. 3. Extend product lifespan: When the chopstick tips are worn, they can be replaced separately. When the chopstick body is damaged or the user wishes to change the style of the chopstick body, the chopstick body can also be replaced separately, which greatly extends the overall lifespan of the product and reduces resource waste. 4. Ultimate Hygiene and Safety: The chopstick tips are made of antibacterial medical-grade metal, ensuring that the parts that come into direct contact with food are safe, non-toxic, and do not easily breed bacteria, and can withstand high-temperature sterilization; 5. Standardized industrial value: Unified interface standards can create independent production and sales markets for chopstick tips and chopstick bodies, promote the division of labor in the industrial chain, and reduce production and consumption costs; 6. Mechanical reliability of the protruding structure: This invention adopts a mating structure of protrusions and recesses, which has the following technical advantages: Precise positioning: The combination of the raised and recessed structures enables precise positioning of the chopstick tip and body, ensuring that it does not wobble or shift during use; Reasonable stress distribution: When the protruding structure is subjected to bending moment, the stress distribution is uniform, and it is not easy to break or deform. Self-locking effect: Properly designed protrusions and recesses (such as tapered fits and tenon fits) can produce a self-locking effect, preventing accidental loosening during use; Easy to clean: The raised structure is exposed, and the recessed structure has a large opening, making it easy to clean and preventing dirt from accumulating. Attached Figure Description
[0006] Figure 1 This is an exploded view of the overall structure of the modular antibacterial metal chopsticks system of the present invention. The figure clearly shows the protruding structure at the rear end of the chopstick head module (1) – the connecting male head (3), and the recessed structure at the front end of the chopstick body module (2) – the connecting female head (4). The connecting male head (3), as part of the chopstick head module (1), protrudes outward from the rear end of the chopstick head; the connecting female head (4), as part of the chopstick body module (2), is recessed into the chopstick body. Figure 1 The two are separated, with a gap between the protrusion and the indentation to clearly identify their geometric shape.
[0007] Figure 2This is a partial cross-sectional schematic diagram of various embodiments of the connection structure of the present invention. The figure shows the mating relationship between the protruding structure (connecting male connector 3) and the recessed structure (connecting female connector 4) under three connection methods in cross-sectional form: Figure 2 In (a), the protruding structure is a cylinder with external threads, and the recessed structure is a hole with internal threads. Figure 2 In (b), the protruding structure is a column with a tenon, and the recessed structure is a hole with a groove. Figure 2 In (c), the protruding structure is a flat-end cylinder with a magnet embedded in its end face, and the recessed structure is a corresponding hole with a magnet embedded in its bottom surface.
[0008] Figure 3 This is a schematic diagram of the modular combination system of the present invention. Detailed Implementation
[0009] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0010] Example 1 (Titanium alloy chopsticks head + bamboo chopsticks body): See Figure 1 and Figure 2 a. This embodiment provides a modular antibacterial metal chopsticks. The chopstick head component (1) is made of Ti-6Al-4V titanium alloy, which has good mechanical properties and biocompatibility. The rear end of the chopstick head is provided with an external thread as a male connector (3). The chopstick body component (2) is made of natural bamboo, and the front end is provided with an internal thread hole that matches the external thread as a female connector (4). The chopstick head and the chopstick body are connected by threads. During cleaning, the chopstick head can be unscrewed for high-temperature sterilization. When the chopstick head is worn, only the chopstick head needs to be replaced; when the chopstick body is damaged, only the chopstick body needs to be replaced.
[0011] Example 2 (Palladium-based alloy chopsticks tip + resin chopsticks body): In this embodiment, the chopstick tip (1) is made of palladium-based bulk metallic glass (Pd-based BMG). Studies have shown that palladium-based alloys have excellent antibacterial properties and the ability to promote cell mineralization. The chopstick body (2) is made of food-grade polypropylene (PP) resin, which is lightweight and available in a variety of colors. The connection structure uses a snap-fit design (see [link to documentation]). Figure 2 (b) A raised annular tenon is provided at the rear end of the titanium chopstick head (1) as a male connector (3), and a corresponding elastic groove is provided at the front end of the chopstick body (2) as a female connector (4). When installing, push it in to lock it, and when disassembling, press the elastic area to pull it out.
[0012] Example 3 (Zirconium-based alloy chopsticks tip + stainless steel chopsticks body): In this embodiment, the chopstick tip (1) is made of zirconium-based alloy, which has excellent corrosion resistance and biocompatibility. The chopstick body (2) is made of food-grade 304 stainless steel, which is sturdy and durable. The connection structure adopts a magnetic attraction and limiting structure (see...). Figure 2 c) Permanent magnets (6) are embedded in the interfaces at the rear end of the chopstick tip and the front end of the chopstick body, and mutually cooperating concave and convex limiting structures (7) are set. The magnetic attraction ensures a firm connection, and the limiting structure prevents relative rotation.
[0013] Example 4 (Modular Combination System): See Figure 3 This embodiment demonstrates the modular combination system formed by the present invention. The chopstick tip series includes: titanium alloy antibacterial chopstick tips (1a), palladium-based alloy high-end chopstick tips (1b), ceramic chopstick tips (1c), etc.; the chopstick body series includes: bamboo and wood heat-insulating chopstick bodies (2a), stainless steel durable chopstick bodies (2b), resin lightweight chopstick bodies (2c), bone art chopstick bodies (2d), etc. All chopstick tips and bodies use a standardized interface (3 / 4) of uniform specifications. Users can freely combine them to form personalized tableware. The dashed arrows in the figure indicate various matching and combination methods of chopstick tips and bodies.
[0014] Material selection instructions: The medical metal materials with antibacterial and biocompatibility include, but are not limited to: pure titanium (TA1, TA2), titanium alloys (Ti-6Al-4V, Ti-15Zr-7.5Mo, Ti-45Nb, Ti-24Nb-4Zr-8Sn), palladium-based alloys (Pd-ased BMGs), platinum-based alloys (Pt-based BMGs), zirconium-based alloys (Zr-based alloys), tantalum metal, etc.
[0015] Interface standardization guidelines: The standardized interface refers to the use of the same specifications, dimensions, and tolerances for the connection points between different chopstick tip modules and different chopstick body modules, ensuring that any chopstick tip can be interchanged with any chopstick body. The interface form can be threaded, snap-fit, magnetic, etc., but the interface specifications are uniform within the same system.
[0016] chopstick tip length ratio: The length of the chopstick tip component (1) accounts for 10%-30% of the total length of the chopstick, which ensures sufficient usable area while controlling costs.
Claims
1. A modular antibacterial metal chopstick, characterized in that, include: The chopstick tip component (1) and the chopstick body component (2) are combined by a standardized detachable connection structure; Both the chopstick tip component (1) and the chopstick body component (2) are independent and replaceable modules; The chopstick tip component (1) is made of medical-grade metal material with antibacterial and biocompatible properties; The chopstick body component (2) is made of a different material than the chopstick tip component.
2. The modular antibacterial metal chopsticks according to claim 1, characterized in that: The medical metal material with antibacterial and biocompatibility is selected from at least one of the following: pure titanium, titanium alloy, palladium-based alloy, platinum-based alloy, zirconium-based alloy, and tantalum metal.
3. The modular antibacterial metal chopsticks according to claim 2, characterized in that: The titanium alloy includes at least one of Ti-6Al-4V, Ti-15Zr-7.5Mo, Ti-45Nb, and Ti-24Nb-4Zr-8Sn.
4. The modular antibacterial metal chopsticks according to claim 1, characterized in that: The chopstick body component (2) is made of one of the following materials: bamboo, wood, metal, resin or ceramic.
5. The modular antibacterial metal chopsticks according to claim 1, characterized in that: The standardized detachable connection structure includes a male connector (3) located at the rear end of the chopstick head component (1) and a female connector (4) located at the front end of the chopstick body component (2), with the male connector (3) and the female connector (4) being matched.
6. The modular antibacterial metal chopsticks according to claim 5, characterized in that: The male connector (3) and the female connector (4) adopt one of the following structures: threaded connection structure, snap-fit connection structure, or magnetic attraction limiting structure.
7. The modular antibacterial metal chopsticks according to claim 1, characterized in that: The connection interface between the chopstick tip component (1) and the chopstick body component (2) adopts a standardized design with uniform specifications, so that chopstick tip modules and chopstick body modules of different materials, functions or appearances can be interchanged and combined to form a modular combination system.
8. The modular antibacterial metal chopsticks according to claim 1, characterized in that: The surface of the chopstick tip component (1) is provided with a sandblasted texture or an anodized coloring layer to increase friction, or an antibacterial coating is formed through surface modification treatment.
9. The modular antibacterial metal chopsticks according to claim 1, characterized in that: A waterproof sealing ring (5) is provided at the connection structure.
10. The modular antibacterial metal chopsticks according to claim 1, characterized in that: The length of the chopstick tip component (1) accounts for 10%-30% of the total length of the chopstick.