Anti-extrusion-crack positioning and mounting structure for glass kettle

Abstract

The utility model discloses a glass kettle anti-cracking positioning installation structure, which comprises an electric heating disc and a glass kettle, the electric heating disc comprises a disc outer ring, a disc main body and an annular disc groove located between the disc outer ring and the disc main body, the upper end of the glass kettle is provided with a kettle cover opening, and the lower end of the glass kettle is provided with an installation part matched with the annular disc groove. At least three positioning parts are uniformly distributed on the disc outer ring, the first end of each positioning part is provided with a convex part extending into the annular disc groove, and the second end of each positioning part is provided with a concave part; the mounting part of the glass kettle is inserted into the annular disc groove, an annular gap is formed among the mounting part of the glass kettle, the protruding part and the disc body, the annular gap is filled with a curing glue layer, and the glass kettle is fixed in the annular disc groove in a sealed mode through the curing glue layer; the glass kettle is convenient to position, the centering error of the mounting part of the glass kettle is reduced, the breaking risk of the glass kettle is reduced, the sealing performance is improved, and the glass kettle is more attractive.

Description

Technical Field

[0001] This utility model relates to the field of glass electric kettle technology, specifically to a glass kettle anti-crack positioning and installation structure. Background Technology

[0002] Glass electric kettles, as small household appliances that combine functionality and aesthetics, are widely used in homes and offices. Their core function is to rapidly heat the water inside the kettle using a high-power electric heating element to meet needs such as brewing tea, making coffee, and sterilizing. In existing technologies, the connection between the glass kettle and the electric heating element mainly relies on high-temperature resistant adhesive for sealing and fixing. However, due to the following technical limitations, there are significant drawbacks in practical applications:

[0003] 1. Insufficient positioning accuracy: The annular groove design of the electric heating plate lacks an effective positioning structure, making it difficult to accurately center the glass pot during installation. Even if the initial position is correct, the glass pot is prone to displacement due to external forces or material shrinkage during the glue application process or glue curing stage, causing direct contact between the glass pot and the outer ring of the metal plate.

[0004] II. Thermal expansion stress concentration: The linear expansion coefficients of the metal disc outer ring and the glass pot differ significantly (for example, the expansion coefficient of aluminum is approximately 23 × 10⁻⁶). -6 / ℃, while high borosilicate glass is approximately 3.3×10. -6 / ℃). When the two are tightly fitted together, the expansion of the metal during heating will generate uneven compressive stress on the glass pot, which can easily cause local cracks or even the whole pot to break.

[0005] III. Risk of Adhesive Layer Failure: Uneven adhesive coating thickness will reduce sealing performance and bonding strength. If there are weak areas in the adhesive layer, it may crack or peel off after prolonged exposure to heat, leading to potential water leakage.

[0006] IV. Craftsmanship Standards and Aesthetics: Uneven fit between the glass pot and the outer ring of the saucer will result in appearance defects, which does not meet the craftsmanship requirements of high-end products and affects the consumer experience. Utility Model Content

[0007] In order to overcome at least one of the technical problems existing in the prior art, this utility model provides a glass kettle anti-crack positioning and installation structure, which makes the glass kettle easy to position, reduces the centering error of the installation part of the glass kettle, reduces the risk of glass kettle breakage, improves sealing performance and makes it more aesthetically pleasing, improves production efficiency, and reduces the increase in product costs due to breakage.

[0008] A glass pitcher anti-crack positioning and mounting structure includes an electric heating plate and a glass pitcher. The electric heating plate includes an outer ring, a main body, and an annular groove located between the outer ring and the main body. The glass pitcher has a lid opening at its upper end and a mounting part adapted to the annular groove at its lower end. At least three positioning parts are evenly distributed on the outer ring. Each positioning part has a protrusion extending into the annular groove at its first end and a recess at its second end. The mounting part of the glass pitcher is inserted into the annular groove, forming an annular gap between itself, the protrusion, and the main body. The annular gap is filled with a curing adhesive layer, which seals and fixes the glass pitcher in the annular groove.

[0009] In some embodiments, the inner surface of the protrusion is an arc-shaped or inclined structure, used to guide the mounting part of the glass pitcher to be centered and positioned.

[0010] In some embodiments, the radial height of the protrusion is 1 / 5 to 1 / 3 of the depth of the annular groove.

[0011] In some embodiments, the number of positioning portions is 3 to 6, and the central angle between adjacent positioning portions is 60° to 120°.

[0012] In some embodiments, the cured adhesive layer is made of high-temperature resistant silicone, and its elastic modulus after curing is 0.5 to 2.0 MPa, with a temperature resistance range of ≥200℃.

[0013] In some embodiments, the width of the annular gap is 0.5 to 2.0 mm, and the circumferential distribution uniformity deviation is less than ±10%.

[0014] In some embodiments, the outer ring of the disc and the body of the disc are made of aluminum alloy or stainless steel, and the glass pot is made of borosilicate glass.

[0015] Additional aspects and advantages of this invention will continue to be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the main view structure of this application;

[0018] Figure 2 This is a schematic diagram of the main structure of the glass pitcher;

[0019] Figure 3 This is a top view of the electric heating plate.

[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a top view of the structure when the mounting part is inserted into the electric heating plate;

[0022] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0023] Figure label:

[0024] 1. Electric heating plate; 2. Glass pot; 11. Outer ring of the plate; 12. Plate body; 12. Temperature control probe; 120. Annular groove of the plate; 13. Positioning part; 14. Pot lid opening; 21. Pot lid; 210. Mounting part; 22. Through hole; 220. Protrusion; 141. Recess; 142. Annular gap; 3. Curing adhesive layer; 4. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Reference Figures 1-2 A glass kettle anti-crack positioning and mounting structure includes an electric heating plate 1 and a glass kettle 2. The electric heating plate 1 is generally installed inside the kettle base. The electric heating plate 1 includes an outer ring 11, a main body 12, and an annular groove 13 located between the outer ring 11 and the main body 12. The upper end of the glass kettle 2 is provided with a lid opening 21 for installing a lid 210, and the lower end is provided with a mounting part 22 adapted to the annular groove 13. The mounting part 22 has a through hole 220, through which a temperature control probe 120 installed on the top of the electric heating plate 1 can be vertically inserted into the glass kettle 2. At least three positioning points are evenly distributed on the outer ring 11. Positioning parts 14, preferably three; each positioning part 14 has a protrusion 141 extending into the annular groove 13 at its first end and a recess 142 at its second end, the protrusion 141 and the recess 142 can be integrally stamped; the mounting part 22 of the glass pot 2 is inserted into the annular groove 13, and an annular gap 3 is formed between the mounting part 22 of the glass pot 2, the protrusion 141 and the plate body 12, and an annular gap 3 is also formed between the outer ring 11 of the plate and the mounting part 22 of the glass pot 2; a curing adhesive layer 4 is filled in the annular gap 3, and the curing adhesive layer 4 seals and fixes the glass pot 2 in the annular groove 13.

[0030] In use, first inject adhesive into the annular groove 13, then place the outer wall of the mounting part 22 into the annular groove 13 along the outer surface of each protrusion 141. Each protrusion 141 extends to the same distance in the annular groove 13, that is, each protrusion 141 is on the same outer circle; this can quickly achieve the centering and positioning of the glass pot 2. After the adhesive cures, the annular gap 3 between the mounting part 22 of the glass pitcher 2, the protrusion 141, and the main body 12 of the plate, as well as the annular groove 13, are filled with the cured adhesive layer 4. The cured adhesive layer 4 serves to buffer and seal, ensuring that the glass pitcher 2 is centered and securely fixed in the annular groove 13 between the outer ring 11 of the plate and the main body 12 of the plate, preventing the glass pitcher 2 from leaking. Even if the protrusion 141 is in close contact with the mounting part 22 of the glass pitcher 2, because each positioning part 14 has a slight deformation to release stress, the protrusion 141 can retract towards the recess 142 when it expands due to heat, and will not be squeezed towards the mounting part 22. The above structural design prevents the glass pitcher 2 from shifting and sticking tightly to the outer ring 11 of the plate or the main body 12 of the plate, and avoids the glass pitcher 2 from being squeezed and broken after it expands due to heat.

[0031] The technical problems solved and the technical effects achieved by this application include:

[0032] 1. Seal failure caused by misalignment during glass container installation:

[0033] Traditional defects: The glass pot is in direct contact with the outer ring of the plate, and the adhesive layer is uneven in thickness, which can easily lead to leakage or insufficient bonding strength.

[0034] This solution achieves a breakthrough by using at least three evenly distributed positioning parts 14 and their protrusions 141 to forcibly limit the centering error of the glass pot 2 mounting part 22 to within ±0.2mm, thereby improving the uniformity of the adhesive layer to ±8% deviation.

[0035] II. Risk of cracking due to the difference in thermal expansion between metals and glass

[0036] Traditional drawback: The linear expansion coefficients of the metal disc outer ring (11) and the glass pot (2) differ by 5-7 times (aluminum: 23×10). -6 / ℃; High borosilicate glass: 3.3×10 -6 / ℃), when heated, the interfacial stress exceeds the tensile strength of the glass (approximately 40MPa).

[0037] This solution achieves a breakthrough by providing a buffer space of 0.5-2.0 mm for the annular gap 3, which, combined with the elastic modulus of the cured adhesive layer 4 (0.5-2.0 MPa), absorbs over 80% of thermal expansion deformation, preventing hard compression. Each positioning part 14 exhibits micro-deformation to release stress, allowing the protruding part 141 to retract towards the recessed part 142 when heated. The ends of the protruding parts 141 are rounded to avoid stress concentration.

[0038] III. Low process compatibility and low assembly efficiency:

[0039] Traditional defects: It relies on manual visual adjustment of the center position, the assembly time for a single part is long, and the defect rate is high.

[0040] This solution achieves a breakthrough: the protrusion 141 and the recess 142 of the positioning part 14 form a self-guiding structure, which shortens the assembly time and improves the yield.

[0041] Therefore, the stamping process and expansion stress control design of the positioning part 14 solves or reduces the risk of extrusion cracking through a three-in-one solution of gap buffering, elastic adaptation of adhesive layer and structural flexibility.

[0042] In some embodiments, the inner surface of the protrusion 141 is an arc-shaped or inclined structure, used to guide the mounting portion 22 of the glass pitcher 2 to be centered. The inner surface of the protrusion 141 is designed as an arc (R≥2mm) or an inclined surface (5° to 15° tilt angle). The inclined or arc-shaped structure forms a "funnel effect," guiding the mounting portion 22 under lateral force when pressed down, automatically sliding towards the center of the groove 13. The arc-shaped surface allows the outer ring 11 of the metal disc and the glass pitcher 2 to undergo radial micro-slippage during expansion, avoiding hard compression. The inclined structure guides the expansion direction to release tangentially, eliminating circumferential shear stress in the glass pitcher.

[0043] In some embodiments, the radial height of the protrusion 141 is 1 / 5 to 1 / 3, preferably 1 / 4, of the depth of the annular groove 13. The radial height refers to the vertical height of the protrusion extending from the inner wall of the outer ring 11 into the annular groove 13. The annular groove depth refers to the vertical depth of the annular groove 13 from the inner wall of the outer ring 11 to the outer wall of the main body 12. The height of the protrusion, being 1 / 5 to 1 / 3 of the groove depth, limits the excessive insertion of the mounting portion 22 of the glass pitcher 2, preventing direct contact with the main body, while also providing sufficient space for the adhesive layer filling, i.e., the annular gap 3. The height constraint of the protrusion ensures that the width of the annular gap between the glass pitcher and the outer ring and main body of the plate is consistent, avoiding stress concentration caused by uneven adhesive layer thickness. The difference in the linear expansion coefficient between the metal plate (aluminum alloy, stainless steel) and the glass pitcher (high borosilicate) can be 5-7 times. The protrusion restricts the radial displacement of the glass pitcher within the groove while allowing axial micro-movement (elastic compensation of the adhesive layer), preventing hard compression.

[0044] In some embodiments, the number of positioning parts 14 is 3 to 6, preferably 3; and the central angle between adjacent positioning parts 14 is 60° to 120°. Three positioning parts (120° central angle) conform to the geometric principle of "three points determining a unique plane," dividing the 360° circumference into three equal parts, each with a central angle of 120°, forming an equilateral triangle distribution, resulting in a simple and convenient structure. Six positioning parts (60° central angle) divide the 360° circumference into six equal parts, each with a central angle of 60°, forming a regular hexagonal distribution. This clustered distribution enhances positioning error tolerance and, for products with larger pot diameters, strengthens resistance to heat deformation.

[0045] In some embodiments, the cured adhesive layer 4 is made of high-temperature resistant silicone, with a cured elastic modulus of 0.5 to 2.0 MPa and a temperature resistance range of ≥200℃. High-temperature resistant silicone exhibits stable performance, does not decompose at high temperatures, does not yellow, and provides good stress buffering and deformation adaptability.

[0046] In some embodiments, the width of the annular gap 3 is 0.5 to 2.0 mm, and the circumferential distribution uniformity deviation is less than ±10%. This provides deformation space for the expansion difference between the metal and glass, ensuring sealing performance and structural stability, balancing manufacturing precision and cost efficiency, and solving the problems of stress concentration, sealing failure, and inefficient processes in the connection of dissimilar materials.

[0047] In some embodiments, the outer ring 11 and the main body 12 of the saucer are made of aluminum alloy or stainless steel, and the glass kettle 2 is made of borosilicate glass. These materials are highly suitable for the production of electric heating glass kettles, offering superior performance.

[0048] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A glass kettle anti-crack positioning and mounting structure, comprising an electric heating plate (1) and a glass kettle (2), wherein the electric heating plate (1) comprises an outer ring (11), a main body (12), and an annular groove (13) located between the outer ring (11) and the main body (12), and the glass kettle (2) is provided with a lid opening (21) at the upper end and a mounting part (22) adapted to the annular groove (13) at the lower end, characterized in that: At least three positioning parts (14) are evenly distributed on the outer ring (11) of the disc. Each positioning part (14) has a protrusion (141) extending into the annular groove (13) at its first end and a recess (142) at its second end. The mounting part (22) of the glass pot (2) is inserted into the annular groove (13) and forms an annular gap (3) between itself, the protrusion (141) and the disc body (12). The annular gap (3) is filled with a curing adhesive layer (4), which seals and fixes the glass pot (2) in the annular groove (13).

2. The anti-crack positioning and installation structure for glass teapots as described in claim 1, characterized in that: The inner surface of the protrusion (141) is an arc or bevel structure, which is used to guide the mounting part (22) of the glass pot (2) to be positioned in the center.

3. The anti-crack positioning and installation structure for glass teapots as described in claim 1 or 2, characterized in that: The radial height of the protrusion (141) is 1 / 5 to 1 / 3 of the depth of the annular groove (13).

4. The anti-crack positioning and installation structure for glass teapots as described in claim 3, characterized in that: The number of the positioning parts (14) is 3 to 6, and the central angle between adjacent positioning parts (14) is 60° to 120°.

5. The anti-crack positioning and installation structure for glass teapots as described in claim 4, characterized in that: The cured adhesive layer (4) is made of high-temperature resistant silicone, and its elastic modulus after curing is 0.5 to 2.0 MPa, and its temperature resistance range is ≥200℃.

6. The anti-crack positioning and mounting structure for glass teapots as described in claim 1 or 2, characterized in that: The width of the annular gap (3) is 0.5 to 2.0 mm, and the uniformity deviation along the circumferential direction is less than ±10%.

7. The anti-crack positioning and installation structure for glass teapots as described in claim 1, characterized in that: The outer ring (11) and the main body (12) of the disc are made of aluminum alloy or stainless steel, and the glass pot (2) is made of high borosilicate glass.

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