Bamboo bowl with anti-scald structure

Abstract

The application discloses a bamboo bowl with an anti-scald structure and belongs to the field of bamboo tableware. The bowl body is formed by a plurality of bamboo pieces spliced and surrounded, and the outer wall is provided with a surrounding stepped waist structure which is sequentially connected by an upper convex ring part, an inner concave convergence zone and a lower convex ring part. The top end of the upper convex ring part is provided with an expanded flange, the bottom end of the lower convex ring part is connected with a raised base, the inner concave convergence zone is contracted towards the central axis of the bowl body to form a circular arc transition annular waist-reducing groove, the upper convex ring part and the lower convex ring part form two annular reinforcing keels at the splicing interface, the annular reinforcing keels are used for converting thermal expansion and cold shrink axial stress into annular compressive stress, and the vertical difference between the two forms a physical limiting space for clamping fingers. The application realizes anti-scald, anti-slip and stress dispersion through the waist-reducing structure, and has the functions of bowl cover nesting and anti-rolling, and is suitable for daily tableware scenes for containing hot food.

Description

Technical Field

[0001] This invention relates to the field of everyday bamboo tableware technology, specifically to a bamboo bowl with a heat-resistant structure. Background Technology

[0002] Traditional bamboo and wood tableware (especially bamboo spliced ​​bowls) is widely used in daily dining due to its natural and environmentally friendly properties. However, existing bamboo and wood bowls face the following objective technical bottlenecks in use: First, they are heat-conducting and easily scald the hands. Although bamboo conducts heat more slowly than metal, when holding boiling hot soup for a long time, heat will penetrate the bamboo wall and accumulate on the outer surface. The existing smooth bowl walls force the user's palm to adhere to a large area of ​​the bowl wall for a stable grip, resulting in direct contact between the palm and the heat source, which easily leads to burns. Second, they are prone to slipping. When the smooth bamboo wall is contaminated with oil or water, the coefficient of kinetic friction decreases significantly. Existing products lack effective anti-slip grip points, making them prone to slipping when holding heavy objects. Third, the spliced ​​interfaces are prone to cracking. Bamboo bowls are mostly made by gluing together multiple pieces of bamboo. When subjected to the stress of thermal expansion and contraction over a long period of time, stress concentration can easily occur at the spliced ​​interfaces, leading to cracking, bulging, and deformation of the bowl. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a bamboo bowl with a heat-resistant structure. The bamboo bowl solves the problems of heat conduction and structural stress dispersion from a physical and geometric perspective through the unique "double convex and one concave" structure of the outer wall.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a bamboo bowl with an anti-scalding structure, comprising a bowl body made of multiple pieces of bamboo spliced ​​together, and the outer wall of the bowl body is provided with a radially undulating ring-shaped stepped waist structure, which is composed of an upper convex ring, an inner concave constriction area and a lower convex ring connected in sequence. The upper convex ring is located in the upper middle part of the bowl, and its top edge extends smoothly outward to form a flared and everted edge; The lower convex ring is located in the lower middle part of the bowl, and its bottom edge is connected to a raised base; The concave constriction area is located between the upper convex ring and the lower convex ring. Relative to the upper convex ring and the lower convex ring, the concave constriction area contracts inward toward the central axis of the bowl, forming a circumferential waist-constriction groove with a rounded cross-section. The upper and lower convex rings form two outwardly convex circumferential reinforcing ribs on the cross-section of the bowl. The circumferential reinforcing ribs are located at the bamboo splicing interface and are used to convert the axial stress of thermal expansion and contraction generated at the bamboo splicing interface into circumferential compressive stress for dispersion. The vertical drop between the upper edge of the upper convex ring and the lower edge of the lower convex ring of the circumferential reinforcing ribs constitutes a physical limiting space within the concave constriction area for locking the user's palm and fingers.

[0005] Furthermore, the depth of the circumferential waist-cinching groove in the concave constriction area is 0.5-1.5 cm. The depth of the circumferential waist-cinching groove is sufficient to allow the user's fingers to naturally fit into it, and the edges of the upper and lower convex rings form a blocking effect.

[0006] Furthermore, the circumferential reinforcing keel is an outwardly convex arc-shaped ring step, with a circumferential width of 0.5-2.0 cm.

[0007] Furthermore, the raised base is cylindrical, and the vertical height of the raised base accounts for 10%-20% of the total height of the bowl.

[0008] Furthermore, a stepped groove is formed between the outer wall of the flared outward edge and the top horizontal platform of the upper convex ring, which is used to nest and support the bowl lid or flat-bottomed tray. In use, the inner edge of the bowl lid or flat-bottomed tray is fitted and attached to the outer wall of the flared outward edge, while its base sits on the top platform of the upper convex ring.

[0009] Furthermore, the maximum outer diameter of the lower convex ring is greater than the outer diameter of the horizontal support surface of the raised base. The edge of the lower convex ring is a stepped non-circular cross-section. When the bamboo bowl is placed on an inclined table and tends to slide, the edge of the lower convex ring abuts against the table and generates static friction braking through rigid surface contact to prevent the bowl from rolling and overturning.

[0010] The beneficial effects of this invention are as follows: By setting a ring-shaped stepped waist structure consisting of an upper convex ring, a concave constriction area, and a lower convex ring connected in sequence on the outer wall of the bamboo bowl, the vertical drop between the upper and lower convex rings forms a physical restraining space for the fingers and palm, transforming the traditional full-palm grip into a three-point skeleton hold, significantly reducing the risk of slippage; at the same time, the concave constriction area contracts towards the axis to form a circumferential waist groove, maintaining a suspended heat insulation gap between the palm and the bowl wall and constructing an air convection channel, which, combined with the low thermal conductivity of bamboo, achieves physical protection. Furthermore, the upper and lower convex rings, acting as two outwardly protruding circumferential reinforcing keels, can transform the axial linear stress generated by thermal expansion and contraction at the bamboo splicing interface into circumferential compressive stress for dispersion, effectively preventing cracking and bulging at the splicing point; the flared outward edge and the top surface of the upper convex ring form a stepped groove, which can securely nest bowl lids or saucers, while the maximum outer diameter of the lower convex ring is larger than that of the raised base, which can generate static friction braking through rigid surface contact on an inclined tabletop, preventing the bowl from rolling and tipping over, thus comprehensively improving the safety, durability and convenience of use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a bamboo bowl with an anti-scalding structure according to a specific embodiment of the present invention.

[0012] Label Explanation: 1. Bowl body; 2. Stepped waist structure; 21. Upper convex ring; 211. Flared and outward-turned edge; 22. Concave constriction area; 23. Lower convex ring; 24. Circumferential reinforcing keel; 3. Raise the base; 4. Stepped slot. Detailed Implementation

[0013] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0014] Please refer to Figure 1 A bamboo bowl with a heat-resistant structure includes a bowl body 1 made of multiple pieces of bamboo spliced ​​together. The outer wall of the bowl body 1 is provided with a radially undulating, stepped waist structure 2. The stepped waist structure 2 is composed of an upper convex ring 21, an inner concave constriction area 22 and a lower convex ring 23 connected in sequence. The upper convex ring 21 is located in the upper middle part of the bowl body 1, and its top edge extends smoothly outward to form a flared and everted edge 211; The lower convex ring 23 is located in the lower middle part of the bowl body 1, and its bottom edge is connected to the raised base 3; The concave constriction area 22 is located between the upper convex ring 21 and the lower convex ring 23. Relative to the upper convex ring 21 and the lower convex ring 23, the concave constriction area 22 shrinks inward toward the central axis of the bowl body 1, forming a circumferential waist-constriction groove with a circular arc transition in cross section. The upper convex ring 21 and the lower convex ring 23 form two outwardly convex circumferential reinforcing ribs 24 on the cross-section of the bowl body 1. The circumferential reinforcing ribs 24 are located at the bamboo splicing interface and are used to convert the axial stress of thermal expansion and contraction generated at the bamboo splicing interface into circumferential compressive stress for dispersion. The vertical drop between the upper edge of the upper convex ring 21 and the lower edge of the lower convex ring 23 of the circumferential reinforcing ribs 24 constitutes a physical limiting space within the concave constriction area 22 for locking the user's palm and fingers.

[0015] In the above embodiments, by setting a ring-shaped stepped waist structure 2 on the outer wall of the bowl body 1, which is composed of an upper convex ring 21, an inner concave constriction area 22 and a lower convex ring 23 connected in sequence, the vertical drop between the upper convex ring 21 and the lower convex ring 23 forms a physical limiting space for the fingers and palm, transforming the traditional full-palm grip into a three-point skeleton hold, effectively reducing the risk of slippage; at the same time, the inner concave constriction area 22 shrinks towards the axis to form a circumferential waist groove, maintaining a suspended heat insulation gap between the palm and the bowl wall and constructing an open air convection channel, combined with the low thermal conductivity of bamboo itself, to achieve a physical anti-scalding effect without coating; in addition, the upper convex ring 21 and the lower convex ring 23 form two outwardly convex circumferential reinforcing ribs 24 on the cross-section of the bowl body 1, which can convert the axial linear stress generated by thermal expansion and contraction at the bamboo splicing interface into circumferential compressive stress for dispersion, inhibiting cracking and bulging at the splicing point and extending the service life.

[0016] As an optional implementation, the depth of the circumferential waist-cinching groove of the concave constriction area 22 is 0.5-1.5 cm. The depth of the circumferential waist-cinching groove is sufficient to allow the user's fingers to naturally fit into it, and the edges of the upper convex ring 21 and the lower convex ring 23 form a blocking effect.

[0017] In the above embodiments, the groove depth of the concave constriction area 22 is limited to 0.5-1.5 cm, which can ensure that the user's finger joints can naturally be inserted into it to obtain a stable grip limit, and is not too deep to affect the structural strength of the bowl body 1 or cause cleaning difficulties. Together with the edge stop of the upper and lower convex rings 23, a reliable three-point mechanical support is formed, which further improves the stability and comfort of the grip.

[0018] As an optional implementation, the circumferential reinforcing keel 24 is an outwardly convex arc-shaped ring step, and the circumferential width of the outwardly convex step is 0.5-2.0 cm.

[0019] In the above embodiments, an arc-shaped ring-shaped step structure is adopted and its outward convex width is limited to 0.5-2.0 cm. This ensures that the fingers and the web of the hand have sufficient support area to improve grip comfort and stability, while avoiding the step being too wide and affecting the overall aesthetics and hand feel of the bowl 1. At the same time, this width range is sufficient to form an effective circumferential reinforcing skeleton to ensure that the stress dispersion effect is fully utilized.

[0020] As an optional implementation, the raised base 3 is cylindrical, and the vertical height of the raised base 3 accounts for 10%-20% of the total height of the bowl 1.

[0021] In the above embodiments, the raised base 3 adopts a cylindrical structure and its height accounts for 10%-20% of the total height of the bowl 1. This not only reliably lifts the bottom of the bowl off the table, reserving sufficient upward heat dissipation channels to enhance the overall anti-scalding effect, but also prevents the bowl 1 from being placed too high, thus affecting its stability and visual harmony. At the same time, this height range helps to form a low center of gravity design, improving the anti-tipping ability when placed.

[0022] As an optional implementation, a stepped groove 4 is formed between the outer wall of the flared outward flange 211 and the top horizontal platform of the upper convex ring 21 for nesting and supporting the bowl lid or flat-bottomed tray. In use, the inner edge of the bowl lid or flat-bottomed tray is fitted and attached to the outer wall of the flared outward flange 211, while its base sits on the top platform of the upper convex ring 21.

[0023] In the above embodiments, the outer wall of the flared edge 211 and the top surface of the upper convex ring 21 together form a double positioning stepped slot 4 structure of "side fitting limit + bottom support". When the bowl lid or saucer is stacked on the rim of the bowl, its inner edge is precisely fitted by the outer wall of the flared edge 211 to prevent lateral slippage. The bottom surface of the base sits on the top plane of the upper convex ring 21 to obtain reliable support. The two work together to ensure that the stacked bowl lid remains stable during the holding and moving process, effectively preventing it from falling due to shaking or tilting, and improving the convenience and safety of daily storage and use.

[0024] As an optional implementation, the maximum outer diameter of the lower convex ring 23 is greater than the outer diameter of the horizontal support surface of the raised base 3. The edge of the lower convex ring 23 is a stepped non-circular cross-section. When the bamboo bowl is placed on an inclined table and tends to slide, the edge of the lower convex ring 23 abuts against the table and generates static friction braking through rigid surface contact to prevent the bowl 1 from rolling and overturning.

[0025] In the above embodiments, the maximum outer diameter of the lower convex ring 23 is greater than the outer diameter of the horizontal support surface of the raised base 3, so that the lower convex ring 23 forms an outwardly convex annular step relative to the raised base 3. When the bamboo bowl tends to slide on the inclined table due to gravity, the raised base 3 first contacts the table and causes the sliding. However, the annular step-shaped edge of the lower convex ring 23 then abuts against the table, and the sliding tendency is converted into static friction braking through rigid surface contact. Combined with the extremely low center of gravity design of the bowl 1, the risk of the bowl 1 rolling and tipping over is completely eliminated, and accidental rolling and falling damage is effectively prevented. It is especially suitable for smooth or inclined dining surfaces.

[0026] Actual working principle of the product: When a user holds the bowl with one hand, the web of the hand naturally rests against the upper convex ring 21, while the base of the palm and the edges of the fingertips support the lower convex ring 23, and the knuckles slide into the concave constriction area 22. In this grip, the center of the user's palm is only in a "loose grip" state and is not tightly pressed against the surface of the bowl. The concave constriction area 22 acts like a natural ventilation channel, promoting rapid airflow between the palm and the bamboo wall, quickly carrying away the small amount of heat conducted from the hot food to the outside of the bowl; and the upper and lower convex rings 23 form a ring-shaped support partition, which, combined with the low thermal conductivity of bamboo itself, ensures that even when holding scalding hot food for a long time, the area in contact with the hand remains in a mild and comfortable temperature range.

[0027] Meanwhile, the two outwardly convex circumferential reinforcing ribs, the upper convex ring 21 and the lower convex ring 23, play a stable annular skeleton tensile role when stress is generated inside the bowl 1 due to temperature changes, so that the bamboo at the splice will not crack due to uneven stress.

[0028] In daily auxiliary use, the user can place the matching flat-topped bowl lid on the rim of the bowl. At this time, the outer wall of the flared edge 211 precisely fits the inner edge of the bowl lid from the outside, and the bottom surface of the bowl lid rests precisely on the top platform of the upper convex ring 21, forming a stable stacked storage. In addition, when the bowl is placed on an inclined table, the raised base 3 will slide under the force first, but because the lower convex ring 23 has a large outer diameter and stepped edge, it will immediately abut against the table to create a rigid surface contact braking, completely eliminating the possibility of the bowl 1 rolling over.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A bamboo bowl with an anti-scalding structure, comprising a bowl body formed by splicing together multiple pieces of bamboo, characterized in that, The outer wall of the bowl is provided with a radially undulating, stepped waist structure, which is composed of an upper convex ring, an inner concave constriction area and a lower convex ring connected in sequence. The upper convex ring is located in the upper middle part of the bowl, and its top edge extends smoothly outward to form a flared and everted edge; The lower convex ring is located in the lower middle part of the bowl, and its bottom edge is connected to a raised base; The concave constriction area is located between the upper convex ring and the lower convex ring. Relative to the upper convex ring and the lower convex ring, the concave constriction area contracts inward toward the central axis of the bowl, forming a circumferential waist-constriction groove with a rounded cross-section. The upper and lower convex rings form two outwardly convex circumferential reinforcing ribs on the cross-section of the bowl. The circumferential reinforcing ribs are located at the bamboo splicing interface and are used to convert the axial stress of thermal expansion and contraction generated at the bamboo splicing interface into circumferential compressive stress for dispersion. The vertical drop between the upper edge of the upper convex ring and the lower edge of the lower convex ring of the circumferential reinforcing ribs constitutes a physical limiting space within the concave constriction area for locking the user's palm and fingers.

2. A bamboo bowl with an anti-scalding structure according to claim 1, characterized in that, The depth of the circumferential waist-cinching groove in the concave constriction area is 0.5-1.5 cm. The depth of the circumferential waist-cinching groove is sufficient for the user's fingers to fit naturally in it, and the edges of the upper and lower convex rings form a blocking effect.

3. A bamboo bowl with an anti-scalding structure according to claim 1, characterized in that, The circumferentially reinforced keel is an outwardly convex arc-shaped step, with a circumferential width of 0.5-2.0 cm.

4. A bamboo bowl with an anti-scalding structure according to claim 1, characterized in that, The raised base is cylindrical, and its vertical height accounts for 10%-20% of the total height of the bowl.

5. A bamboo bowl with an anti-scalding structure according to claim 1, characterized in that, A stepped groove is formed between the outer wall of the flared and outward-turned edge and the top horizontal platform of the upper convex ring, which is used to nest and support the bowl lid or flat-bottomed tray. When in use, the inner edge of the bowl lid or flat-bottomed tray is fitted and attached to the outer wall of the flared and outward-turned edge, while its base sits on the top platform of the upper convex ring.

6. A bamboo bowl with an anti-scalding structure according to claim 1, characterized in that, The maximum outer diameter of the lower convex ring is greater than the outer diameter of the horizontal support surface of the raised base. The edge of the lower convex ring is a stepped non-circular cross-section. When the bamboo bowl is placed on an inclined table and tends to slide, the edge of the lower convex ring abuts against the table and generates static friction braking through rigid surface contact to prevent the bowl from rolling and overturning.

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