Cooling cup inner container structure resistant to temperature change and free of deformation
By incorporating bubble-shaped elastic soft rubber into the inner liner of the cooling cup, which combines with the coolant, the expansion pressure of the coolant is buffered by the gas, thus solving the problems of inner liner deformation and sealing performance, and achieving a cooling cup design that is both efficient and safe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN MEINUO ELECTRIC TECH CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-19
AI Technical Summary
Existing cooling cup inner liner is prone to deformation or bursting when the coolant volume expands, and has high sealing performance requirements, affecting the preservation effect and safety.
The system combines bubble-shaped elastic soft rubber with coolant, using gas to buffer the expansion pressure of the coolant. By evenly distributing bubble-shaped elastic soft rubber in the inner tank, the pressure in the inner tank is reduced, thus optimizing the coolant distribution and heat transfer effect.
It effectively prevents the inner liner from deforming or bursting, improves cooling effect and sealing, reduces safety hazards, and maintains the lightness and service life of the inner liner.
Smart Images

Figure CN224251116U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an inner liner structure of a cooling cup that is resistant to temperature changes and does not deform. Background Technology
[0002] Existing insulated cups and food storage containers typically feature a sealed inner liner filled with a coolant, commonly including water, refrigerant, or other specialty liquids. These products are generally designed with a removable inner liner, allowing users to freeze them and reuse them later, making them particularly suitable for breast milk or other foods and beverages requiring preservation. However, while this technology achieves a certain level of preservation, it also presents some technical challenges and safety risks.
[0003] First, traditional coolants have different volume expansion ratios between their solid and liquid states. For example, water expands by about 9% when it freezes. Due to this expansion, the inner tank is prone to deformation under stress, and may even burst. To mitigate this problem, a common approach is to reduce the liquid content and increase the air content to avoid excessive pressure on the inner tank when the liquid freezes. Although air is compressed, its pressure on the inner tank is far lower than the expansion pressure of the frozen liquid, thus reducing the risk of deformation. However, this method leads to a significant decrease in cooling efficiency because the reduced coolant volume results in poor preservation.
[0004] Furthermore, the thickness of the inner tank also affects cooling efficiency and safety. When the inner tank is insufficiently thick, the air content is too high, resulting in significant pressure fluctuations and potentially causing deformation of the inner tank wall. Conversely, if the air content is too low, the pressure from liquid expansion can easily deform the inner tank. Therefore, finding a balance between factors such as inner tank thickness, coolant volume, and air content is crucial to solving this technical challenge.
[0005] In existing technologies, increasing the thickness of the inner liner to enhance pressure resistance often leads to increased product weight, impacting user experience and increasing manufacturing costs. Furthermore, a high air content significantly increases the requirements for sealing performance; even slight deformation can cause air or liquid leaks, posing safety hazards.
[0006] Therefore, existing technologies face problems such as poor preservation effect, easy deformation or cracking of the inner liner, safety hazards, and excessively high requirements for sealing performance. Utility Model Content
[0007] The purpose of this invention is to provide a cooling cup with an inner liner structure that is resistant to temperature changes and does not deform. It utilizes the properties of elastic soft rubber, which is resistant to temperature changes and pressure, and combines with air to form bubbles. These bubbles work together with the coolant to counteract the pressure of the coolant expansion, achieving a practical effect of not damaging the inner liner.
[0008] The technical solution adopted by this utility model to solve its technical problem is:
[0009] A cooling cup inner liner structure that is resistant to temperature changes and does not deform includes an inner liner body. The inner liner body is hollow and filled with coolant. At least one bubble-shaped elastic soft rubber is disposed in the inner liner body and is evenly distributed within the inner liner body. The bubble-shaped elastic soft rubber is hollow and filled with gas. The bubble-shaped elastic soft rubber is in contact with the coolant.
[0010] Preferably, the bubble-shaped elastic soft rubber is in the form of tubular bubbles, block bubbles, or capsule-shaped bubbles.
[0011] Preferably, the bubble-shaped elastic soft rubber is in the shape of a round tube, and the round tube-shaped bubble-shaped elastic soft rubber is curved and connected at both ends to form a ring tube.
[0012] Preferably, the diameter of the tubular bubble-shaped elastic soft rubber is less than or equal to the distance between the two walls of the inner cavity of the inner liner.
[0013] Preferably, the inner liner body is cylindrical, and the hollow part inside the inner liner body is also cylindrical and hollow.
[0014] Preferably, the hollow part inside the inner liner body is provided with a positioning groove, and there is one or more positioning grooves, which cooperate with the bubble-shaped elastic soft rubber to form a retaining and limiting position on the bubble-shaped elastic soft rubber.
[0015] The beneficial effects of this utility model are:
[0016] By incorporating bubble-shaped elastic soft rubber into the inner liner, the expansion pressure generated after the coolant freezes can be effectively mitigated. The bubble-shaped elastic soft rubber provides a buffering effect by filling with gas, thereby reducing the pressure on the inner liner caused by the expansion of the frozen liquid and preventing the risk of deformation or bursting. Furthermore, by evenly distributing the bubble-shaped elastic soft rubber within the inner liner, the presence of the bubbles can optimize the distribution of coolant and heat transfer to a certain extent, while maintaining the lightweight nature of the inner liner and improving cooling efficiency.
[0017] By introducing bubble-shaped elastic soft rubber, the pressure on the inner liner can be effectively relieved without increasing the thickness of the inner liner, reducing pressure on the inner liner wall and thus achieving a lightweight and efficient cooling function. At the same time, the sealing performance of the bubble-shaped elastic soft rubber also helps to prevent air leakage, ensuring the coolant's tightness. Through its hollow structure and gas filling, the bubble-shaped elastic soft rubber provides an additional protective layer, reducing direct contact between the liquid and the inner liner, lowering the pressure exerted by coolant expansion on the inner liner, and thus reducing the probability of safety hazards. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the inner liner of a cooling cup that is resistant to temperature changes and does not deform, according to this utility model.
[0019] Figure 2 This is an internal structural diagram of the inner liner structure of a cooling cup that is resistant to temperature changes and does not deform, according to this utility model. Specific implementation methods
[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0021] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example
[0023] See Figure 1-2As shown, a cooling cup with a temperature-resistant and non-deformable inner liner structure includes an inner liner body 1. The inner liner body 1 is hollow and filled with coolant. At least one bubble-shaped elastic soft rubber 2 is disposed in the inner liner body 1, and the bubble-shaped elastic soft rubber 2 is evenly distributed in the inner liner body 1. The bubble-shaped elastic soft rubber 2 is hollow and filled with gas, and the bubble-shaped elastic soft rubber 2 is in contact with the coolant.
[0024] The inner liner is designed to be hollow and filled with coolant. Combined with the presence of bubble-shaped elastic soft rubber 2, it effectively disperses the stress on the inner liner when the coolant freezes, preventing deformation or cracking due to excessive expansion pressure. The bubble-shaped elastic soft rubber 2 provides cushioning, offering better stability in environments with large temperature fluctuations, ensuring the inner liner maintains its stable shape under alternating hot and cold conditions. The contact between the bubble-shaped elastic soft rubber 2 and the coolant optimizes coolant distribution and heat conduction paths, resulting in more uniform cooling. The hollow structure of the bubble-shaped elastic soft rubber 2 not only provides cushioning but also effectively reduces the weight of the inner liner, improving cooling performance while ensuring coolant stability and a superior user experience.
[0025] In traditional designs, frozen coolant can cause excessive expansion pressure in the inner liner, leading to deformation or rupture. However, by incorporating bubble-shaped elastic soft rubber 2, the inner liner absorbs the pressure generated during coolant expansion, preventing irreversible deformation or damage to the inner liner body 1 due to excessive expansion pressure. The bubble-shaped elastic soft rubber 2 not only reduces the weight of the cooling cup but also provides support within the inner liner structure, making it more robust and stable. Even during portable use, the inner liner can withstand a certain amount of impact without deforming due to excessive external force.
[0026] The type of coolant used may vary, and traditional anti-coolant may not be used. Water or a mixture of water and SAP polymer resin may be used, resulting in different cooling expansion ratios. The number of elastic soft rubber bubbles should be adjusted appropriately. In this embodiment, five elastic soft rubber bubbles achieve the best cooling and preservation effect and prevent breakage.
[0027] The inner liner is designed to reduce damage caused by temperature changes or mechanical shocks, thus extending the lifespan of the portable cooling cup. The interaction between the coolant and the bubble-shaped elastic soft rubber 2 reduces wear and pressure concentration areas on the inner liner surface, thereby improving the cooling cup's durability.
[0028] The bubble-shaped elastic soft rubber 2 is in the form of tubular bubbles, block bubbles, or capsule-shaped bubbles. The bubble-shaped elastic soft rubber 2 is in the shape of a round tube, and the round tube bubble-shaped elastic soft rubber 2 is curved and connected at the head and tail to form a ring tube. The diameter of the round tube bubble-shaped elastic soft rubber 2 is less than or equal to the distance between the two walls of the inner cavity of the inner liner body 1.
[0029] The cylindrical, bubble-shaped elastic soft rubber 2 is curved and forms a ring, effectively utilizing the space within the inner liner body 1. This allows the inner liner to enhance its stability without increasing its space requirements. The ring design ensures that the bubble-shaped elastic soft rubber 2 is evenly distributed and provides good support, preventing the inner liner from deforming due to temperature changes during cooling or heating.
[0030] The hollow, tubular, bubble-shaped elastic soft rubber 2 better buffers the pressure caused by the expansion of coolant when it freezes. The annular tube design enhances the pressure absorption capacity of the elastic soft rubber, evenly distributing the pressure generated inside the tank after coolant freezing, preventing deformation or rupture due to excessive pressure. The tubular, bubble-shaped elastic soft rubber 2 allows for good contact with the coolant, and the annular structure helps optimize the flow and distribution of coolant within the tank. This design further improves the heat transfer effect of the coolant, enhancing the efficiency of the entire cooling system.
[0031] The diameter of the annular tubular bubble-shaped elastic soft rubber 2 is less than or equal to the distance between the two walls of the inner cavity of the inner liner body 1. This means it can be tightly arranged inside the inner liner without taking up too much space, while maintaining portability. This not only effectively reduces the weight of the inner liner but also maintains cooling performance and structural stability, ensuring portability and efficient cooling. The annular tube design forms a closed ring structure, which helps prevent the coolant from strongly pushing against the inner liner when it freezes, reducing the possibility of deformation and improving the inner liner's sealing performance. Enhanced sealing helps prevent coolant leakage or external contamination, ensuring safety during use. The curved cylindrical bubble-shaped elastic soft rubber enhances the inner liner's impact resistance and temperature resistance. During cooling, the pressure of the coolant expansion is evenly distributed, reducing the risk of concentrated pressure on the inner liner wall. This allows the cooling cup to maintain good performance even under large temperature variations.
[0032] The inner liner body 1 is cylindrical, and the hollow part inside the inner liner body 1 is also cylindrical. The hollow part inside the inner liner body 1 is provided with a positioning groove 3. There is one or more positioning grooves 3, which cooperate with the bubble-shaped elastic soft rubber 2 to form a retaining and limiting position of the bubble-shaped elastic soft rubber 2.
[0033] The inner liner body 1 is cylindrical, and the hollow parts are also cylindrical and hollow, ensuring the symmetry of the overall structure and the even distribution of load. The hollow design reduces material usage, thus lowering the weight of the inner liner while maintaining sufficient strength and stability. Positioning grooves 3, which cooperate with the bubble-shaped elastic soft rubber 2, effectively fix the position of the elastic soft rubber, preventing it from moving or shifting during use. The design of multiple positioning grooves 3 further improves the stability and firmness of the bubble-shaped elastic soft rubber 2, ensuring it always remains in the predetermined position, thus enhancing the reliability and service life of the equipment.
[0034] The positioning groove 3, in conjunction with the bubble-shaped elastic soft rubber 2, provides better support for the bubble-shaped elastic soft rubber 2, preventing deformation or damage caused by external impacts or pressure. This design effectively improves the protective performance of the bubble-shaped elastic soft rubber 2 and reduces the risk of breakage. The presence of the positioning groove 3 allows the bubble-shaped elastic soft rubber 2 to be easily and accurately positioned during the manufacturing process, simplifying the assembly process. At the same time, this design also facilitates later maintenance and replacement of the elastic soft rubber, providing a more convenient operation and disassembly method.
[0035] Precise positioning ensures that the bubble-shaped elastic soft rubber 2 is stably positioned within the hollow of the inner liner and fits tightly against it. This facilitates more uniform heat exchange between the coolant and the elastic soft rubber, improving the overall cooling effect. The positioning groove 3 design also prevents the bubble-shaped elastic soft rubber 2 from shifting during the cooling process, thus maintaining its cooling performance. Because the bubble-shaped elastic soft rubber 2 is held in place by the positioning groove 3, this design reduces wear or loosening issues caused by prolonged use, thereby improving the long-term stability and durability of the inner liner system. The combination of the cylindrical design and the positioning groove 3 maximizes the use of the internal space of the inner liner, effectively controlling the size and position of the bubble-shaped elastic soft rubber 2, avoiding space waste, and ensuring that the space within the inner liner is fully utilized.
[0036] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of this utility model, shall fall within the scope of protection of this utility model.
Claims
1. A cooling cup inner liner structure that is resistant to temperature changes and does not deform, comprising an inner liner body, characterized in that, The inner liner body is hollow and filled with coolant. At least one bubble-shaped elastic soft rubber is disposed in the inner liner body and is evenly distributed in the inner liner body. The bubble-shaped elastic soft rubber is hollow and filled with gas. The bubble-shaped elastic soft rubber is in contact with the coolant.
2. The inner liner structure of the cooling cup that is resistant to temperature changes and does not deform according to claim 1, characterized in that, The bubble-shaped elastic soft rubber is in the form of tubular bubbles, block bubbles, or capsule-shaped bubbles.
3. The cooling cup's temperature-resistant and deformation-resistant inner liner structure according to claim 2, characterized in that, The bubble-shaped elastic soft rubber is in the shape of a round tube, and the round tube-shaped bubble-shaped elastic soft rubber is curved and connected at both ends to form a ring tube.
4. The inner liner structure of the cooling cup that is resistant to temperature changes and does not deform according to claim 3, characterized in that, The diameter of the tubular, bubble-shaped elastic soft rubber is less than or equal to the distance between the two walls of the inner cavity of the inner liner.
5. The inner liner structure of the cooling cup that is resistant to temperature changes and does not deform according to claim 1, characterized in that, The inner liner body is cylindrical, and the hollow part inside the inner liner body is also cylindrical and hollow.
6. The inner liner structure of the cooling cup that is resistant to temperature changes and does not deform according to claim 5, characterized in that, The hollow part inside the inner liner body is provided with a positioning groove. There is one or more positioning grooves, which cooperate with the bubble-shaped elastic soft rubber to form a retaining and limiting function for the bubble-shaped elastic soft rubber.